WO2003012579A9 - Automotive storage and playback device and method using the same - Google Patents
Automotive storage and playback device and method using the same Download PDFInfo
- Publication number
- WO2003012579A9 WO2003012579A9 PCT/US2001/050991 US0150991W WO03012579A9 WO 2003012579 A9 WO2003012579 A9 WO 2003012579A9 US 0150991 W US0150991 W US 0150991W WO 03012579 A9 WO03012579 A9 WO 03012579A9
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- Prior art keywords
- storage
- digital content
- playback device
- area network
- automobile
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- G06Q50/40—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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- H04L65/764—Media network packet handling at the destination
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/50—Secure pairing of devices
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- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
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Definitions
- the present invention relates generally to ubiquitous computing devices and, more particularly, to providing digital content from the Internet to an automobile.
- Wireless radio -frequency (RF) LAN technology has also been introduced into the home networking market. Theoretically, wireless technology is the most convenient for the end user since there is virtually no installation. There are currently two prevalent standards for wireless networking, including Institute of Electrical and Electronics Engineers (IEEE) 802.1 lb and HomeRF. Both of these systems utilize the unlicensed 2.4 GHz ISM band as the carrier frequency for the transmission of data. Both of these technologies have effective ranges of
- RF transceivers are required for each device to communicate on the network.
- IEEE 802.1 lb and HomeRF include additional encryption and security protocol layers so that the user's devices have controlled access to data being sent through the LAN.
- gateways a device that exists to connect a local area network or networks in the home, to the Internet.
- DSL modems and cable modem Digital cable set-top boxes are now being introduced with integral DOCSIS cable modem and hard disk drives.
- Other residential gateways have been introduced that include PC comparable processing power and hard disk drives, as well as cable and DSL modems, and LAN transceivers.
- the MP3 digital audio format is an audio encoding technology that allows consumers to further compress digital audio files such as those found on Compact Disks, to much smaller sizes with very little loss in sound quality.
- the MP3 format allows for compression of audio content to approximately 1 million bytes per minute of audio, at near Compact Disk quality.
- the smaller size of MP3 encoded audio files has enabled these files to be shared by users across the Internet, since the digital transfer of these files can be completed in a reasonable amount of time with a broadband connection.
- a variety of Internet-based digital music access and distribution services have appeared that provide means for users to gain access to digital audio files.
- AOL TimeWarner have been created that provide a convenient graphical user interface and software decoding of MP3 files.
- PC software digital audio players allow users to play MP3 files on their PC, using an existing sound card with external speakers.
- Software digital audio players typically include playlist editors, which is are applications that allows users to organize their MP3 or other digital music files. Playlists are files that include names and file system path designations to file based digital audio files.
- Portable MP3 playback devices have been developed for this purpose. Portable MP3 playback devices are significantly smaller than portable CD players because they contain no moving parts, only solid-state flash memory, a microprocessor for decoding MP3- formatted audio content, and batteries. [0013] One limitation of portable MP3 playback devices is that the cost per bk of audio content stored is still very high because of the high cost of flash memory. The typical portable digital audio playback device includes enough flash memory to store about one CD's worth of digital music. MP3 enthusiasts may own hundreds or thousands of MP3 files. The result is that the user is burdened with having to continually manually change the music files in the device by plugging the device into the PC and operating a user interface to delete and add new music if they want to listen to a wide range of music.
- Telematics is a field of technology that includes mobile, automobile- based telecommunications.
- automobiles include a variety of telematics equipment and capabilities, such as on-board cellular communications and navigation systems.
- file-based content such as audio or graphics files
- the system should include a system for selecting content to be automatically delivered or refreshed at the automobile on a regular basis.
- the system should also allow users to access their music by the use of the same playlist structure in the home and in the automobile.
- the automotive storage and playback device is capable of being detachably coupled to an automobile.
- the device includes a wireless transceiver to receive compressed digital content automatically from a computer system via a wireless local area network based on user defined preferences input into the computer system
- the wireless transceiver is communicably coupled to the wireless local area network when the wireless transceiver is a predetermined distance from a wireless local area network access point.
- the device also includes a decoder and converter to decompress and convert the digital content. The decompressed and converted digital content is sent to be played on an output device in the automobile.
- FIG 1. illustrates is schematic block diagram of one embodiment of a LAN-based automotive content delivery and playback system 10
- FIG 2. illustrates a block diagram of one embodiment of a LAN-based automobile caching and playback sub- system as it is installed in an automobile;
- FIG 3. illustrates a schematic block diagram of one embodiment of a LAN-based automobile caching and playback sub- system
- FIG 4. illustrates an isometric view of one embodiment of a storage and datalink unit
- FIG 5. illustrates an isometric view of one embodiment of a storage and datalink unit with one side of the enclosure removed;
- FIG 6. illustrates a section view of one embodiment of a snap latch engaged with enclosure
- FIG 7. illustrates a section view of one embodiment of a snap latch disengaged with enclosure
- FIG 8. illustrates an isometric view of one embodiment of a user interface control unit
- FIG 9. illustrates one embodiment of a LAN-based automobile content delivery system
- FIG 10. illustrates a schematic diagram of one embodiment of a automobile storage and playback system connected to car stereo via the FM antenna;
- FIG 11. illustrates one embodiment of a PC 18 desktop with a audio device playlist
- FIG 12. illustrates one embodiment of a desktop PC 18 with a content subject guide page
- FIG 13. illustrates one embodiment of a desktop PC 18 with a graphical user interface of a content selection web page
- FIG 14. illustrates one embodiment of a storage gateway system to automotive storage and playback system 10 synchronization flow chart
- FIG 15. illustrates one embodiment of a user interface module LCD sequence
- FIG 16. illustrates one embodiment of a hard disk drive with a heating element attached
- FIG 17. illustrates one embodiment of an integrated head unit
- FIG 18. illustrates one embodiment of an automobile storage and playback system
- FIG 19. illustrates one embodiment of a schematic of a wireless media server system located in automobile
- FIG 20 illustrates one embodiment of a schematic diagram of an Ethernet- based
- FIG. 21 illustrates one embodiment of a automotive telematics system with both wireless LAN and wireless WAN communications capabilities.
- content is used to refer to digital audio, video, images, or interactive multimedia.
- a network is defined as two or more computer devices of any type, such as a personal computer (PC), network appliance, or PDA, connected together by a digital communication link.
- a device tfiat has a communication link to the network is often referred to as a node.
- a local area network (LAN) is defined as a plurality of nodes connected by the network that are in physically close proximity.
- gateway used interchangeably with broadband gateway, is defined as an integral modem and router, and may include hub functionality.
- the modem (modulator/demodulator) function is used to change voltage fluctuations on an input carrier line (a DSL line input or a cable TV input) into digital data
- Routers are devices that connect one distinct network to another by passing only certain IP addresses that are targeted for specific networks. Hubs allow one network signal input to be split and thus sent to many devices.
- a storage gateway or storage gateway system combines mass storage capability with a gateway.
- a Personal Computer (PC) connected to a broadband cable modem gateway is considered a storage gateway system
- a digital cable set-top box with DOCSIS cable modem and a hard disk drive is also considered to be a storage gateway system
- a CODEC is a software algorithm function implemented in software or software and hardware for compressing and decompressing audio, graphic, or moving picture data.
- MP3 is a well-known CODEC format and is a naming convention for MPEG layer 3, which is the digital audio layer in an MPEG encoded video data file.
- Subscription is defined to mean a content service whereby new content is periodically provided based on a content selection parameter, such as a particular artist, editorialist, or genre. Subscription services may be paid for by the user or can be ad-supported (free to the user).
- a subscription service is a audio sports news file that is downloaded to a user's PC every day.
- the basic function of the present invention is to provide a system for delivering digital file-based content to an automobile for playback by a user, and involves wireless communication and information (content) transfer between the Internet and home PC 18, and the local area network (LAN)-based automotive storage and playback system 10.
- the content may be transferred automatically and periodically, and/or under the direct control of the user.
- the system includes a broadband connection connected to a PC 18 with a wireless LAN access point 30, located in a residence or at a specific fixed site.
- a LAN- based automotive storage and playback system 10 located in the automobile that includes a computer system with a hard disk drive and a wireless LAN transceiver. Anytime the automobile is within range of the wireless LAN access point 30, the computer system in the automobile becomes a node on the wireless LAN, and content maybe transferred from the Internet and home PC 18. The content may be stored in the hard disk drive in the automobile.
- the automobile storage and playback system 10 is schematically similar to systems incorporating multi-CD changers that are typically located in the trunk.
- a PC 18 located in the home is connected to the Internet via a broadband connection 38 using a DOCSIS cable modem 22, and comprises a storage gateway system PC 18 includes a hard disk drive 26 and a wireless LAN access point 30, which is connected to PC 18 via a USB connection.
- wireless LAN technology based on the ⁇ 802.1 lb specification is used.
- the wireless LAN 30 system described uses socket- based communication protocols, specifically the TCP IP standard.
- FIG. 2 a schematic of the automotive storage and playback system 10 is shown super- imposed on an automobile 42.
- a dashed line denotes electrical lines that are connectorized at dock 126.
- the automobile storage and playback system 10 is integrated into an automobile 42 with an existing conventional car stereo 46.
- Automobile storage and playback system 10 includes a storage and datalink unit 14, and a user interface control module 50.
- FIG. 3 shows a block diagram of the components of the automotive storage and playback system 10.
- Storage and datalink unit 14 includes a microprocessor 82, flash memory 86, dynamic random access memory (DRAM) 90, a power conversion and battery charging sub-system 94, a digital-to-analog converter (DAC) 98, a PC card host controller 102, a PC card connector 110, a USB host controller 106 and a 10 gigabyte hard disk drive 112, and a rechargeable internal battery 122.
- a wireless LAN PC card 114 is included and located in the PC card connector 110 slot.
- the electronic components and sub-systems of the storage and datalink unit 14 are functionally connected via a printed circuit board 118.
- Storage and datalink unit 14, shown in FIG. 4 and FIG. 5, may be removably attached to automobile 42 by being placed in a dock 126 that is permanently installed in automobile 42.
- the dock 126 includes a cavity for accepting storage and datalink unit 14. Note that in FIG. 5 that internal battery 122 has been removed so as not to obscure the other components.
- storage and datalink unit 14 is mounted in the trunk. In other embodiments, storage and datalink unit 14 is mounted underneath a seat, or in the glove compartment.
- storage and datalink unit 14 may be locked onto dock 126 using two attachment latches 130 and 134 rotatably attached on either side of dock 126.
- FIGS. 6 and 7 show a detail view of how latches 130 and 134 function.
- Latch 130 and 134 includes a latch cam 138 that is a cam lobe positioned such that it contacts the dock 126 and tightens as latch 130 rotates toward storage and datalink unit 1 .
- Latch 130 slightly untightens as latch 130 moves over-center and the latch catch 140 is located in the latch slot 152 on the enclosure 150. This overcenter action insures that latches 130 and 134 stay in the locked position.
- the user rotates latches 130 and 134 away from storage and datalink unit 14, and lifts storage and datalink unit 14 out of dock 126.
- the bottom cap 146 of storage and datalink unit 14 includes a data connector and a power connector that connect to correspondingly placed connectors on dock 126.
- Dock 126 connectors functionally connect storage and datalink unit 14 to unswitched and switched car battery power 278 and 282, connect analog audio signal 286 output to the car stereo 46 head unit, and connect storage and datalink unit 14 to user interface control module 50 in the passenger compartment via a serial connection 290.
- a coaxial connector A 190 and connector B 194 is also included for connecting wireless LAN transceiver 114 to an antenna extension sub-system 178 that is also located in automobile 42.
- Storage and datalink unit 14 enclosure 150, top cap 142, and bottom cap 146 consist of injection-molded plastic.
- FIG. 8 shows user interface control module 50 that includes a microprocessor, LCD with integral backlight 52, and buttons for allowing the user to control the system, including the following buttons: power on/off 74, play/pause 54, stop 58, forward track 62, and backward track 66.
- a four-way navigation toggle 70 is also provided, as well as a tag button 78.
- the electronic components of user interface control module 50 are functionally connected via a printed circuit board.
- User interface control module 50 is housed in an injection- molded plastic enclosure.
- FIG.4 shows that the storage and datalink unit 14 includes a handle 154 integral to the top cap 142 to use for carrying the storage and datalink unit 14.
- FIG. 5 shows that hard disk drive 112 is mounted in storage and datalink unit 14 enclosure 150 with a vibration dampening subsystem so that vibrations and impulse loads are not transferred from the automobile 42 motion to the platters and heads inside hard disk drive 112.
- the vibration dampening subsystem includes of two elastomeric suspension caps 158, one each attached to the top and bottom of hard disk drive 112.
- the elastomeric suspension caps 158 have rectilinear concavities that fit over the ends if hard disk drive 112. Additionally, four screws are placed through holes in the elastomeric suspension caps 158 that correspond with mounting screw holes on hard disk drive 112, to further secure elastomeric suspension caps 158 to the hard disk drive 112.
- Each elastomeric suspension cap 158 includes two suspension flexures 162 that are narrow sections of the elastomeric material that extend laterally away from hard disk drive 112. These suspension flexures 162 elastically deform during shock loads.
- FIG. 5 also shows that suspension flexures 162 have integral suspension mounts 166 that attach to suspension pins 170 integral to enclosure 150.
- the geometry of elastomeric suspension caps 158 and flexures 162 are such that the storage and datalink unit 14 enclosure 150 can move relative to hard disk drive 112 in multiples axes of motion during impulse and vibration loads, to absorb the shock of automobile 42 motions.
- hard disk drive 112 cannot come into contact with any aspect of enclosure 150 or other components other than elastomeric suspension caps 158.
- a flexible ribbon cable (not shown) electrically connects hard disk drive 112 to the computer sub-system Elastomeric suspension caps 158 are homogeneous parts molded out of Dynaflex thermoplastic elastomer, provided by GLS Corporation, of Illinois.
- resistance temperature device (RTD) temperature sensor 174 shown in FIG. 5 is conductively attached to hard disk drive 112 with conductive epoxy, and is electrically connected to microprocessor 82.
- an antenna extension subsystem 178 is used to insure that a dipole antenna 182 is positioned to receive a clear signal from wireless LAN access point 30.
- Dipole antenna 182 at the end of a shielded coaxial wire 186 is positioned on the top surface of the rear seat deck in automobile 42.
- antenna 182 is mounted behind a plastic bumper cover.
- a length of shielded coaxial cable 186 extends into the trunk where it is terminated with one side of a coaxial connector A 190 at dock 126.
- a printed circuit board antenna 198 is fixed in storage and datalink unit 14 enclosure 150 in close proximity to wireless LAN PC card transceiver 114 antenna 116.
- a shielded coaxial cable 187 is connected to printed circuit board antenna 198 and terminates with a coaxial connector B 194 that mates to coaxial connector A 190 when storage and datalink unit 14 is placed into dock 126.
- the output of DAC 98 is plugged directly into line level inputs in the existing car stereo 46 system head unit.
- DAC 98 converts decompressed digital audio to an analog signal at line levels.
- the existing car stereo 46 system must provide the ability to switch to an auxiliary source.
- the analog audio signal 286 that is output from storage and datalink unit 14 is input into the automobile audio system by being plugged into an FM antenna tap 206.
- the analog output from DAC is modulated by an FM modulator 202.
- the user must tune the existing car stereo to an FM frequency at the low end of the FM band, such as 87.5, and the audio content is played on the existing car stereo 46 system. This type of connection into existing car stereos 46 is commonly found in after-market CD changers.
- a system control application 210 runs on PC
- Core module 214 manages the basic
- core module 214 is
- JVM Java Virtual Machine
- Core module 214 includes the portion of the system control application
- GUI content editors such as web-based content selection guide 246,
- Reading from and writing to content database 226 Transfer of content files 234 from Internet 222 to LAN-based automotive system:
- a Managing and routing transfers of digital content files 234 from Internet 222 to automotive storage and playback system 10, and b. Managing and routing transfers of cached digital content files 234 on PC 18 to automotive storage and playback system 10;
- the scheduling function accesses time and date inputs associated with actions stored in content database 226 by GUI module 218.
- the scheduling function periodically compares these time and date entries with the current state of PC 18 internal timer. When there is a match, the action is taken
- NAT Network Address Translation
- routing - digital file 234 transfers that occur directly from the Internet 222 to automotive storage and playback system 10 require a real time connection to Intemet 222.
- Automotive storage and playback system 10 Application/Software Delivery - Automotive storage and playback system 10 control firmware 270 updates can be stored at PC 18 and delivered to automotive storage and playback system 10 on an as-needed basis.
- a new or updated CODEC 274 (sent as a BLOB - binary large object) can be delivered to automotive storage and playback system 10 via wireless LAN 34 and installed into memory.
- Other types of applications can be delivered to automotive storage and playback system 10.
- Auto-discovery - Automotive storage and playback system 10 will automatically authenticate on wireless LAN 34 when in range.
- Core module 214 listens for periodic broadcasts from automobile storage and playback system 10. 10.
- Message Transactions - text or other content or data 234 from the Internet 222 can be transferred to automotive storage and playback system 10 and presented on LCD 52;
- Tag servicing includes a function where core module 214 periodically accesses a specific location on Internet 222 to acquire and store an accurate time and date;
- Synchronization - Data such as user data and related information, such as an accurate time and date, must be synchronized across the three platforms (web, automotive storage and playback system 10, and PC 18).
- Core module 214 time and date data is thus synchronized with an external (absolute) standard
- GUI module 218 is implemented as a Win32 application and resides and runs on PC 18.
- GUI module 218 is used by end users to organize and manage digital content 234 and content preferences. User content selections made using GUI module 218 are stored in a bcal content database 226 by core module 214. Based on user inputs into GUI module 218, core module 214 modifies content database 226 using methods called over HTTP and expressed with XML grammar.
- GUI module 218 functions are provided below to show how system control application 210 functions to deliver content to automotive storage and playback system 10.
- An audio playlist editor 238 is described that allows users to organize their local audio content 234; and a web-based content selection guide 246 is described that allow users to select digital subscription content services.
- GUI module 218 includes segments of the software application that run the GUI, including, but not limited to, the following functions:
- dialog boxes e. initiation and operation of dialog boxes
- System control application 210 is designed to function with a number of instances of core module 214, content database, and GUI module 218 running concurrently on multiple PC 18s and or storage gateways, all connected by the same LAN. It is anticipated that users will own and operate multiple PCs 18 in a single home for example, with different content cached on each PC 18.
- a digital set-top box with a DOCSIS cable modem 22 and a wireless LAN transceiver could include an instance of core module 214 and content database 226 in addition to the instance on PC 18.
- the focus will be on a singular GUI module 218 located and executed on a PC 18.
- FIG. 11 shows tbe audio playlist editor 238 as it appears to the user on PC desktop 236, and shows that there are three levels of organization: channels 250, playlists 254, and tracks 258.
- Channels 250 are lists of playlists 254, and playlists 254 are lists of tracks 258.
- a track 258 (audio file name) shown in audio playlist editor 238 is a GUI element that signifies a file and a path designation on hard disk drive 26 on PC 18, and a listing in content database 226.
- users can create, delete, and rearrange channels 250 and playlists 254, can rearrange track 258 orders, and can add tracks 258 to playlists 254 by navigating to the location of the local digital audio files 234 using a standard Windows dialog box.
- Tracks 258 can also be added to playlists 254 by dragging and dropping digital audio file 234 icons from windows onto the track field of the audio playlist editor 238.
- the user may obtain digital audio files 234 that are stored on PC 18 hard disk drive 26, such as MP3 files, in a variety of ways, and organize these files, otherwise known as tracks 258, into channels 250 and playlists 254 using an audio playlist editor 238 aspect of GUI module 218, as described above and shown in FIG. 8.
- Audio device playlist editor also includes the ability to select specific channels 250 or playlists 254 to be replicated on automobile storage and playback system 10. As shown in FIG. 11 , this function is accessed by right-clicking on a channel 250 or playlist 254 name and selecting "sync with auto". A right-click pull down menu 262 is shown in Figure 11.
- a user can make a channel 250 entitled “MyCar” and include several playlists 254 each including several songs, and then make the "sync with Auto" selection. Subsequently, only the "MyCar” channel 250 and all child playlists 254 and tracks 258 will be wirelessly synchronized into automobile storage and playback system 10.
- the right-click menu on each channel 250 and playlist 254 also includes a "sync now" selection, which initiates the synchronization and subsequent file transfer process immediately (assuming that automobile 42 is within range of wireless LAN 34).
- a user may also make selections for receiving periodic content delivered to automotive storage and playback system 10 using a web-based content selection guide 246 aspect of GUI module 218, as described above and shown in FIG. 10. Selections made using the web-based content guide 246 for periodic content services require system control application 210 to periodically access Internet 222 servers where content is located and download and cache content locally on PC 18 hard disk drive 26. These content selections made by user using aspects of GUI module 218 are recorded in content database 226 by core module 214.
- the web-based content selection guide 246 simplifies and facilitate the discovery and selection of subscription content services on the Internet 222 for periodic distribution into automobile storage and playback system 10.
- web-based content subject guide 242 is html- formatted web pages accessed through a mini-browser, and shows a range of content subjects 248. Selecting "NPR" on web-based content subject guide 242 results in the content selection web page 246 shown in FIG. 14. A content selection 264 with a check box 268 is shown. Selections made using this interface result in the creation of pointers to locations of digital audio files 234 on Internet 222 servers. These files are periodically accessed and downloaded to PC 18 hard disk drive 26 for subsequent transfer to automobile storage and playback system 10.
- the periodicity at which subscription content files 234 are downloaded are based on rules provided by each content provider. For example, some content files 234 are refreshed on the content provider's Internet 222 server on a daily basis at 1:00am. In this case, one rule for accessing the server and downloading the content file 234 is that it must happen after 1 :00am.
- the pointers to Internet 222 content files 234 as well as the rules governing the downloading of files 234 are stored in content database 226.
- Web-based content guide capability may include, but is not limited to the following functionality:
- Content type As per FIG. 12, an interface is provided that begins with general content subject 248 links, and as the user makes selections, the content subjects 248 become more specific and culminate in the presentation to the user of content selections 264.
- a user may subscribe to a daily version of a radio show.
- a pointer and rules for downloading the digital audio file 234 are transferred from an Internet 222 server to content database 226 (by core module 214).
- the latest version of the radio show digital audio file 234 is automatically transferred from a content provider's Internet 222 server to PC 18, and from PC 18 to automotive storage and playback system 10, by core module 214 according to the download rules.
- Storage and datalink unit 14 includes an operating system that is Linux in one embodiment.
- control firmware 270 is present on storage and datalink unit 14.
- a content database is also stored on storage and datalink unit 14.
- Communicate with PC 18 via wireless LAN 34 - includes management of security code that is used to encrypt wireless communications on wireless LAN 34.
- control firmware 270 compares the contents of content database 226 on PC 18 with content database 230 on automotive storage and playback system 10. This action is described in greater detail below.
- Control firmware 270 includes a large buffering function where hard disk drive 112 can read ahead and store significant amounts of digital audio file 234 that is currently being decoded, in DRAM, so that hard disk drive 112 head can park. By buffering large amounts of digital audio file 234 in this way, hard disk drive 112 head can maintain a shorter operating duty cycle when the head is in its read position over a platter. The less time the head is located over a platter, the less likely a head crash will occur due to an impulse load from the motion of automobile 42.
- Hard disk drive 112 temperature monitoring The temperature sensor on hard disk drive 112 is continually monitored with a duty cycle of 1-2 minutes. If the temperature closely approaches the specified operating temperature limits of hard disk drive 112 (typically between 5 and 55 degrees Celsius), hard disk drive 112, control firmware will disable hard disk drive 112 (the platters will not be allowed to spin and the head will be parked).
- the specified operating temperature limits of hard disk drive 112 typically between 5 and 55 degrees Celsius
- control firmware will disable hard disk drive 112 (the platters will not be allowed to spin and the head will be parked).
- automobile storage and playback system 10 When automobile 42 is rurining, wireless LAN transceiver 114 is disabled, automobile storage and playback system 10 may be operated using automobile battery power, and automobile 42 power system is recharging storage and datalink unit's 14 internal battery 122. When automobile 42 is turned off, automotive storage and playback system 10 may be used to play music (discussed below) using internal battery 122 as the power source. When automobile 42 is turned off, computer sub-system in storage and datalink unit 14 is operational, wireless LAN transceiver 114 is enabled and, under control of control firmware 270, broadcasts a message every 10 minutes. This activity is powered by the automotive storage and playback system 10's internal battery 122.
- the automobile's 42 main battery is never drawn down by automotive storage and playback system 10 activity.
- This message broadcast by storage and datalink unit 14 is encoded using the user's security code, thus the automotive storage and playback system 10 will only receive a response when it is in the presence of the user's wireless LAN 34 radio- frequency field.
- FIG. 14 is a flowchart showing the process for comparing the content databases 226 and 230 and for synchronizing content according to new user selections.
- user interface control module 50 is connected to storage and datalink unit 14 via a cable, and is located in passenger compartment within reach of driver or passenger.
- User interface module 50 may be mounted on the dashboard, or may be placed so that the user can hold user interface module 50.
- User interface module 50 includes LCD 52 that enables the display of three levels of the interface, channels 250, playlists 254, and tracks 258.
- User interface module 50 also includes a center four-way joystick control 70, that allows the user to navigate between levels, and laterally within levels.
- FIG. 15 shows a sequence of LCD 52 screens that describes how the interface functions. For example, when 4-way joystick 70 is pushed up, highlight on LCD 52 moves up one level. Likewise when 4-way joystick 70 is moved to the right, highlight on LCD 52 moves to the next entry on that level.
- the functions of the other control buttons, such as previous track 66 and stop 58 are well known in the media player field:
- Screen 1 - the initial state of the user interface control module 50 is shown.
- the top line of text shows the current channel 250
- the second line of text shows the current play list
- the third line of text shows the current track 258.
- the player status icon 80 shows the filled square symbol, which is the
- Screen 2 - This screen shows the result of activating the right navigation on joystick 70.
- the channel level label changes to "channel 2".
- the labels at the playlist 254 level and the tracks 258 level also update to reflect the new items in "channel 2".
- the highlight moves from the channel 250 level to the playlist 254 level.
- Screen 4 - This screen shows the result of next activating right navigation on joystick.
- the playlist 254 level changes to "playlist2", the next playlist 254 organized under "channel 2".
- the track 258 level text also updates to reflect the actual first track 258 included in "track 1" under "playlist 2".
- Screen 5 This screen shows the result of next activating the play/pause button 54 on user interface control module 50.
- 'Track 1" begins to play.
- Screen 6 This screen shows the result of next activating the next track button 62 twice on interface control module 50.
- 'Track 3" begins to play.
- the player status icon 80 changes from a black square to a right-pointing triangle.
- Screen 7 - This screen shows the result of next activating the play/pause button 54 while a track 258 is playing.
- the track 258 stops playing and the player status icon 80 is the "pause" icon.
- Screen 8 - This screen shot shows the result of a few different actions.
- the play/pause button 54 was activated, thus 'Track 3" begins to play where it left off when the play/pause button 54 was activated.
- right navigation on joystick 70 is activated once.
- the track 258 line advances to show the next track 258, or 'Track 4" in "Playlist 2".
- 'Track 3" continues to play. This feature allows the user to browse through the channel 250/playlist 254/track 258 list structure while continuing to listen to a currently playing track 258.
- Screen 9 This screen shows the result if no other buttons are activated for six seconds. The display reverts back to display the channel 250, playlist 254, and track 258, that is currently being played.
- Audio content is played through the car's existing stereo speakers and is modified (treble, base, loudness, etc.) using the existing car stereo system's controls.
- Storage and datalink unit 14 may be removed by unlatching the left and right latches 130 and 134. There are several reasons for removing storage and datalink unit 14: for alternate synchronization methods, to insure operation when automobile 42 is subject to temperature extremes, and for use as a mobile media player.
- storage and datalink unit 14 continues to periodically broadcast (searching for a server) even when it is removed from automobile 42. For scenarios where a user cannot place their automobile 42 within range of the home wireless LAN 34 (such as if a user lives in an apartment building), storage and datalink unit 14 can be removed and hand carried within range of home wireless LAN 34, and wireless communication and synchronization occurs as described above.
- S nchronization can also occur through a wired USB connection directly to PC 18.
- System control application 210 on the user's PC 18 automatically recognizes storage and datalink unit 14, and performs the appropriate synchronization, similar to that which is described for in the wireless LAN 34 scenario.
- Tag button 78 included on user interface module 50 in FIG. 8 is used to produce a digital record of audio content 234 that is played on the automobile storage and playback system 10 that is of particular interest to the user.
- tag button 78 When the user would like to receive more information about an audio content item 234 he or she is listening to, the user pushes tag button 78.
- a software process is triggered whereby a record of the audio content being played, including information such as song (file) title and ED3 data that is embedded in content file 234, is stored in a tag database 266 in memory in the storage and datalink unit 14.
- the time and date of tag button 78 activation is also stored in tag database 266.
- the record of tagged items is automatically transferred to tag database 294 associated with system control application 210 on home PC 18 storage gateway system, from which it is automatically transferred to the user's tag aggregation page at a website associated with the user.
- Software applications on the website process the tag record information and provide the user with more enhanced information, or ancilliary content, that is associated with the tagged content.
- the user can then use any HTML- based browser, such Internet Explorer or Netscape Navigator, commonly found on home PCs 18, to browse the tag aggregation web page and associated ancilliary content.
- Ancilliary content is for example information about a particular song artist, album art, song lyrics, concert dates, options to purchase subsequent content, or information about purchasing and/or downloading a particular digital audio file 234.
- the tag feature works with both downloaded audio content and broadcast radio content.
- downloaded content the song title and other meta-data will be embedded in the digital audio file 234 and thus the song title and other information can be accessed directly by the control firmware 270.
- Radio content tagging involves recording the radio tuner frequency, time, and date information. When this data is transferred to a specific tag-processing software application on a server on Internet 222, the data can be used to retrieve information about that particular song through radio station playlist information services that publish play lists for broadcast content.
- storage and datalink unit 14 is used as a mobile digital audio player.
- Interface control module 50 receives power from storage and datalink unit 14, and storage and datalink unit 14 is able to operate fully when operated outside of automobile.
- a mobile interface control unit is able to plug into storage and datalink unit 14.
- storage and datalink unit 14 also includes a headphone output jack. The mobile interface control unit is used to power on the storage and datalink unit 14, and the interface controls are used as described above.
- the play button is activated, the specified audio file 234 is decoded an audio signal is produced for use with headphones.
- the interface control module 50 includes a connector several inches down the cable 290 that is installed permanently in automobile 42, and is able to be unplugged from the installed cable 290 and plugged into a corresponding connector in storage and datalink unit 14.
- the same interface control module 50 can be used in the automobile and also as a mobile interface control module 50.
- one embodiment of automotive storage and playback system 10 includes a hard disk drive 112 heating subsystem
- Hard disk drive 112 heating subsystem consists of a copper clad apton heating element 298 fixed in contact with hard disk drive 112 housing, as shown in FIG. 16.
- a thin layer of thermally conductive adhesive is used to attach Kapton heating element 298 to hard disk drive 112.
- Kapton heating elements 298 are a well-known technology for heating items when space is a constraint. Current is send through large copper traces adhered to the Kapton substrate. The current subsequently produces heat, which is conducted to hard disk drive 112 housing.
- the temperature monitoring sub-system which is an aspect of control firmware 270, controls the heating of hard disk drive 112 so that the operating temperature limit is not exceeded.
- control interface is integrated into a head unit 302, shown in FIG. 17, mounted in the dashboard similarly to existing car stereo 46 head unit devices.
- the head unit 302 is connected to the storage and datalink unit 14 via the analog audio 286 cable and a serial communication standard RS-232 data cable 290, which sends and receives control messages.
- Head unit 302 provides all of the functions of existing automobile stereo head units, but with the additional capability of providing the interface to the automobile storage and playback system 10, as described above.
- the head unit 302 is also connected to the car's AM/FM antenna 48 via an antenna cable.
- the head unit 302 includes a stereo sound processor, audio mixer, pre-amplifier, amplifier, AM/FM (radio) tuner, and a user interface to control the content and other features.
- the radio tuner is included in the device so that the automobile storage and playback system 10 can play conventional broadcast radio audio.
- the user switches between content sources by activating the source button.
- the LCD will also show metadata that may be embedded in the music files themselves.
- a tag button 78 is included.
- the storage gateway system's connection to the Internet can be any type
- the mass storage memory in the automobile storage and playback system 10 can include flash memory, which can be designed as all non-removable, partially removable, or totally removable.
- Non-removable flash memory is comprised of flash memory chips that are permanently soldered to printed circuit boards located internal to the storage and datalink unit 14 housing.
- Removable flash memory is used in the form of removable memory cards, such as Compact Flash memory cards, a well known standard for removable flash memory.
- the head unit further includes a CD drive or audiocassette drive so that the automobile storage and playback system 10 can include certain common car stereo functionality.
- a CD drive or audiocassette drive a user would be able to both listen to downloaded music content from his/her PC 18, and listen to music content that is played off a CD or tape cassette.
- a system is created that can support transfer and presentation of data other than music file data.
- Content such as text and image files, video files, or interactive multimedia files, can be downloaded to the automobile storage and playback system 10 where they are displayed on a high- resolution graphics LCD.
- the user can send information, such as driving directions, maps, or movies, to the automobile storage and playback system 10 and thus has access to that information while he/she is in the car.
- the automobile storage and playback system 10 would include one or more larger video display units, as well as alternative audio output interfaces.
- the driver can listen to broadcast radio while passengers in the back seat watch an MPEG movie, hstening to the movie audio using stereo headphones.
- a data link in the form of electrical wires or cables is used to connect the automobile storage and playback system 10 to other devices in the car.
- users can transfer a host of information easily between their vehicle and home computer. Examples of this application include: transferring records of mileage, speed, and fuel consumption back to a home PC 18; uploading new software or code into a car's central computing controller to improve performance or change settings (these changes could be released by automobile manufacturers over the Internet); downloading map databases into the automobile storage and playback system 10 for navigational use. For this
- the communication link that is local to the automobile is extended to the automobile's on-board control computer.
- An RS-232 port on the storage and datalink unit 14 is connected to a corresponding RS-232 port on the on-board computer.
- New firmware is downloaded that is of a compatible format for the on-board controller. Reprogramming of automobile operational parameters is performed now. Dinan Engineering provides engine controller firmware upgrades for BMW automobiles that provides improved performance and efficiency.
- BMWs have certain features that are reprogrammable at a BMW dealership. For example, BMWs can be programmed to automatically lock all doors a few seconds after the automobile is in motion after occupants have entered the car. This feature can be activated or deactivated, depending on the preference of the user with the use of a dedicated automobile feature programming application that runs on the home PC 18.
- the automobile storage and playback system [0075] In a further embodiment, the automobile storage and playback system
- the automobile storage and playback system 10 head unit further includes a microphone that is used to capture voice recordings that are then stored in memory. Examples of this application include: recording messages for oneself that can later be transferred to and stored on a home PC 18; recoding messages for oneself at the home PC 18 (such as street directions) and then storing them on the automobile storage and playback system 10 for use when driving.
- a microphone mounted near the driver seat is wired to an A/D converter and a DSP subsystem included in the storage and datalink unit 14.
- control firmware on the storage and datalink unit 14 allows the user to trigger a recording function and the user's voice is encoded by the data and storage link unit and stored until the automobile is in range of the home wireless LAN 34, when it is transferred to the home PC 18 automatically.
- the storage and datalink unit 14 is designed such that the battery and wireless LAN transceiver are integrated into the dock 126, and the processing components (including the USB connector) of the storage and datalink unit 14 are internal to the removable part of the storage and datalink unit 14.
- the wireless LAN transceiver 114 and battery 122 remain in the car so that the weight of the removable part of the storage and datalink unit 14 is niinirnized.
- the user carries the device to a home dock, identical in form to the automobile dock 126, which is connected via USB to the PC 18 or storage gateway system.
- the home dock also provides power to the storage and datalink unit 14. When the storage and datalink unit 14 is in the home dock, synchronization takes place.
- a further related embodiment includes a removable storage and datalink unit 14 where local battery 122 remains in the trunk (integral to the dock 126) but the wireless LAN transceiver 114 is included in the storage and datalink unit 14.
- a home dock that is powered with an AC connection is provided. The home dock converts AC from the wall into DC that can be used to power the computer and wireless LAN transceiver 114 in the removable storage and datalink unit 14. This home dock can be located anywhere within range of the home wireless LAN 34, for example, near the entrance to the home.
- the removable storage and datalink unit 14 is placed into the home dock, the storage and datalink unit 14 receives power and immediately connects to the home LAN 34, and replication or synchronization commences.
- FIG. 18 shows an aftermarket automobile storage and playback system
- data is transferred from the storage and datalink unit 14 to a wireless media player unit 318 wirelessly.
- the storage and datalink unit 14 acts as a storage gateway and a server to the wireless head units 318.
- System control application operates on storage and datalink unit 14.
- Each media player unit 318 contains a wireless LAN transceiver connected to an antenna, which allows signals to be received from the storage and datalink unit's 14 wireless transceiver.
- the storage and datalink unit 14 contains data wirelessly transferred from the home PC 18 and Internet and stored in the hard disk drive 112, and the head units 318 can access that data from the storage and datalink unit 14 wirelessly.
- an MP3 song or other audio stored in the storage and datalink unit 14 hard disk drive 112 can be sent wirelessly to the car stereo head unit for immediate playback, just as a movie or other multimedia can be sent wirelessly to the wireless media player head unit 318.
- the storage and datalink unit 14 is connected to the media player head units 322 via a 100 Mbps Ethernet LAN 326 system
- the 100 Mbps LAN 326 system can handle multiple audio or video streams from the storage and datalink unit 14 to various head units 322, as well as the control messages.
- data is transferred from the storage and datalink unit 14 to a PDA wirelessly.
- the storage and datalink unit 14 acts as a storage gateway and server for the PDA.
- the PDA has a wireless LAN transceiver, which allows signals to be received from the storage and datalink unit 14' s wireless transceiver.
- the storage and datalink unit 14 contains data wirelessly transferred from the home PC 18 and stored in the hard disk drive 112, and that data can be accessed wirelessly by the PDA, for use anywhere in the car or within range of the storage and datalink unit 14. This data could include such content as daily schedules, driving directions and maps, digital movies if the PDA has video decoding and playback capabilities, as well as single or multi-player games.
- FIG. 21 shows a block diagram of an automobile with both a wireless
- the LAN transceiver 114 and a wireless WAN transceiver.
- the user can request and download content regardless of where the automobile is located. However, since WAN bandwidth is more expensive and slower, the WAN content downloads would be limited to narrowband information that is time sensitive, such as traffic updates and messages.
- the WAN channel can also upload tag messages based on user tag button activations. The tag messages are routed to the corresponding tag processing server.
- the WAN (cellular) chipset is located in the storage and datalink unit 14.
- a separate antenna is used and also connected to the WAN radio input.
- the operating system on the storage and datalink unit 14 includes software that monitors and controls the WAN subsystem, receiving and recording content, and sending content (messages) or connecting to the cellular system for realtime voice transmission.
Abstract
Description
Claims
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AU2001297990A AU2001297990A1 (en) | 2000-10-20 | 2001-10-22 | Automotive storage and playback device and method using the same |
KR1020037005537A KR100856359B1 (en) | 2000-10-20 | 2001-10-22 | Automotive storage and playback device and method using the same |
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-
2001
- 2001-10-19 US US10/052,057 patent/US7200357B2/en not_active Expired - Lifetime
- 2001-10-22 AU AU2001297990A patent/AU2001297990A1/en not_active Abandoned
- 2001-10-22 JP JP2003517698A patent/JP4159465B2/en not_active Expired - Fee Related
- 2001-10-22 WO PCT/US2001/050991 patent/WO2003012579A2/en active Application Filing
- 2001-10-22 KR KR1020037005537A patent/KR100856359B1/en active IP Right Grant
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2007
- 2007-03-13 US US11/717,430 patent/US7920824B2/en not_active Expired - Fee Related
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2011
- 2011-01-21 US US13/011,285 patent/US10172035B2/en active Active
- 2011-01-21 US US13/011,388 patent/US20110117978A1/en not_active Abandoned
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2018
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US10172035B2 (en) | 2019-01-01 |
JP4159465B2 (en) | 2008-10-01 |
US20070178830A1 (en) | 2007-08-02 |
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AU2001297990A1 (en) | 2003-02-17 |
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EP1410594A2 (en) | 2004-04-21 |
WO2003012579A2 (en) | 2003-02-13 |
JP2004537896A (en) | 2004-12-16 |
KR20030051729A (en) | 2003-06-25 |
US20110117978A1 (en) | 2011-05-19 |
EP1410594B1 (en) | 2018-08-15 |
US20020164973A1 (en) | 2002-11-07 |
US7920824B2 (en) | 2011-04-05 |
US10631201B2 (en) | 2020-04-21 |
US7200357B2 (en) | 2007-04-03 |
US20190159063A1 (en) | 2019-05-23 |
KR100856359B1 (en) | 2008-09-04 |
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