WO2002103657A1

WO2002103657A1 - Map display apparatus

Info

Publication number: WO2002103657A1
Application number: PCT/JP2002/005147
Authority: WO
Inventors: Katsutoshi Miyoshi; Satoshi Tanaka; Yuji Hirai
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2001-06-01
Filing date: 2002-05-28
Publication date: 2002-12-27
Also published as: KR100592473B1; JP2002358003A; JP5135652B2; DE10296871T5; KR20040003011A

Abstract

A map display apparatus includes a storage medium block for storing map data, a display block for displaying map data together with a title corresponding to the map data, an operation block for selecting a title displayed, and a control block for displaying map data corresponding to the selected title on the display block. Thus, it is possible to obtain the map display apparatus in which titles of map information stored in the storage medium block are displayed in a list, so that areas of the maps stored can be viewed at once.

Description

Map display device Technical field

The present invention relates to a map display device including a display unit for displaying a map and a current position.

• Background technology

A map display device, such as a navigation device, is mounted on a vehicle and displays a destination (a destination or a stopover) and a current position of the vehicle. It would be convenient if the napige-display device for displaying the destination and the current position could be used for purposes other than automobiles, for example, while walking.

FIG. 8 is a block diagram of a conventional map display device. The map display device includes an operation device A, a main device B, and a broadcasting unit C.

The operating device A includes the following elements. The operation input unit 1 has keys for the user to perform operations. The central processing unit (CPU) 4A is a control unit that controls the operation of the entire display device. The display unit 2 displays the image data processed by the CPU 4A. The GPS unit 5 inputs position information indicating the current position from the antenna at any time. ROM 6 stores menu screens and programs that summarize operation commands related to communication, various set values, and screen display characters. The RAM 7 stores and stores data such as a list of telephone numbers of communication partners input from the operation input unit 1, various user setting values, and input information from outside (for example, the site of INN Yuichi Net). Data can be erased as needed. The communication interface (I / F) unit 10 is an interface for connection with a portable telephone 9 such as a PHS or a digital portable telephone. Operating device A further includes a GPS antenna AT1. Mobile phone 9 is ante NA AT 2 is provided.

Broadcasting section C includes a TV tuner section (TV section) 12 and an FM receiving section (FM section) 13 having a receiver function for FM multiplex broadcasting and FM radio broadcasting.

Main device B includes the following elements. The audio output unit 16 amplifies the input audio signal and outputs it to the speaker 16a. The GPS unit 17 inputs position information indicating the current position from the antenna as needed. The power supply unit 18 supplies power to the operation device A and the broadcasting unit C together with the main unit B. The map information supply media unit 19 has a DVD, a CD-ROM, and the like, and stores map data and various drive information. The main unit B has a gyro 20 as an acceleration sensor, a parking brake sensor unit 26 that detects a parking brake signal S from a vehicle equipped with this device, and a GPS antenna AT 3 attached to the outside of the body of the vehicle. Connected to

The mobile phone 9 is connected to a communication destination stored in the RAM 7 according to an instruction from the CPU 4A, performs data communication, and transmits and receives position information, character information, images, voices, and the like. The communication interface unit 10 detects whether or not the mobile phone 9 is connected, detects the type of the connected mobile phone 9, and monitors the communication result of the transmitted and received data, and sends the communication result to the CPU 4A. Notice. Further, the parking brake signal Sa is set to, for example, a High level in a locked state and a Low level in a released state.

In order to use such a map display device during walking, the user needs to carry all of the operation device A, the main device B, and the broadcasting unit C. In particular, main unit B is heavy because it includes power supply section 18 and gyro 20 and is difficult to carry. Furthermore, when the main unit B is removed from a vehicle such as an automobile, it is particularly complicated to remove the gyro 20 and the antenna AT 3 mounted on the automobile. In order to reduce the weight when walking, the operating device A captures and stores the map information from the map information supply media unit, and the operating device A can be separated from the main unit B. May be. However, its storage capacity is inevitably smaller than that of CD-ROM, DVD-ROM, etc., so that only a part of the map information stored in CD-ROM, DVD-ROM can be imported. At that time, it is not possible to know which area the captured map is in unless the map itself is displayed. Disclosure of the invention

The map display device has a storage media section for storing map data, a display section for displaying map data and a title corresponding to the map data, an operation section for selecting the displayed evening title, and a function for the selected title. And a control unit for displaying map data to be displayed on a display unit.

The map display device can recognize the region of the imported map by displaying only the title of the imported map as a list. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a block diagram of a map display device according to an embodiment of the present invention. FIG. 2A is a front view of the map display device according to the embodiment.

FIG. 2B is a side view of the map display device according to the embodiment.

FIG. 3 is a flowchart showing the operation of the map display device according to the embodiment.

FIG. 4 is a flowchart showing the operation of the map display device according to the embodiment.

FIG. 5 shows a display screen of the map display device according to the embodiment.

FIG. 6 shows a display screen of the map display device according to the embodiment.

FIG. 7 shows a display screen of the map display device according to the embodiment.

FIG. 8 is a block diagram of a conventional map display device. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a block diagram of a map display device according to an embodiment of the present invention. The display device includes an operation device A1, a main device B1, and a broadcasting unit C1. Operation input unit 1, Display unit 2, Central processing unit (CPU) 4, control unit, GPS unit 5, ROM6, RAM 7, Secondary battery unit 8, Mobile phone 9, Communication interface unit 10, TV section 12, FM section 13, Audio output section 16, Speed 16a, GPS section 17, Power supply section 18, Map information supply media section 19, Gyro 20, Parking brake sensor section 26, GPS antennas AT1, AT3, and antenna AT2 are the same as those shown in FIG. The screen operation unit 3 is mounted on the surface of the screen of the display unit 2, and operates as an input device by touching a predetermined place on the displayed screen. The external storage medium unit 11 can store and read various data such as map data, and can exchange data with other similar devices. The audio output unit 14 amplifies the input audio signal and outputs it to the speaker 15a or the headset 15b. The light receiving section 25 receives light such as infrared rays transmitted from the remote controller 28. The secondary battery unit 8 has a built-in rechargeable battery and charger. The operating device A1, the main unit B1, and the broadcasting unit C1 are connected to each other by connecting connectors 21 to 24.

The GPS unit 5 inputs the position information indicating the current position to the CPU 4, and the CPU 4 compares the input position information with the map data of the external storage medium unit 11, and displays the current position on the corresponding latitude / longitude map screen. Is displayed with a marker such as an icon. The GPS unit 17 inputs position information indicating the current position to the CPU 4 when used as a power navigation device. The CPU 4 collates the input position information with the map data of the map information supply media unit 19 in the same manner as the GPS unit 5, and displays the current position with a marker on the map screen on the corresponding latitude and longitude. The map information supply media section 19 stores map data and various drive information. If the operating device A 1 is separated, it has reached its destination Recognizing that or specifying the area, the CPU 4 selects the map data of the current position (the current position and its surrounding map data) or the map data of the predetermined location (for example, the destination) from the above map data. Automatically or manually into RAM7 or the external storage media unit 11 in advance. The operating device A1 may be connected to a CCD camera. A GPS antenna is connected to each of the operation device A 1 and the main device B 1, or a connector is provided for connecting each of them. The antenna AT3 is connected to the main unit B1 so as to be separable. The antenna AT 1 is connected to the operating device A 1 so as to be stowable.

FIG. 2A is a front view of the map display device according to the embodiment, and FIG. 2B is a side view of the map display device. Operation device A 1 as a separation unit, main unit B 1 as a station unit, broadcasting unit C 1, display unit 2, screen operation unit 3, secondary battery unit 8, speaker 16 a, map information supply media The unit 19, the light receiving unit 25, the GP S antennas AT1, AT3, and the antenna AT2 are the same as those in FIG. The touch pen 27 operates the screen operation unit 3 in the separated state. The remote controller 28 remotely controls the display device.

When the operating device A 1 is connected to the main unit B 1, the CPU 4 determines that the instruction content of the remote controller 30 output from the light receiving unit 25 is valid, and the touch pen 27 is set to the screen operating unit (the touch panel). By touching 3, it is determined that the instruction input from the touch panel 3 through the display unit 2 is invalid. When the operation device A 1 is separated from the main device B 1, the CPU 4 determines that both the instruction content of the remote control 30 output from the light receiving section 25 and the instruction content input from the evening panel 3 are valid. I do.

The main unit B1 is attached to, for example, a dashboard of an automobile, and the operating device A1 is attached to the main unit B1 by connecting connectors 21 and 22. Operation device A 1 can be removed from main unit B 1, and broadcast unit C 1 can be operated Can be removed from device A1.

The operation of the map display device thus configured will be described with reference to FIGS. FIG. 3 is a flowchart showing a map capturing operation of the map display device, and FIG. 4 is a flowchart showing a map display operation of the map display device.

First, the operation of taking in map information when the operation device A1 and the main device B1 are combined will be described.

In FIG. 3, the user first operates the remote controller to set the center position and scale of the map to be captured, and the CPU 4 sets the center position and scale of the map (S1). Next, the CPU 4 determines the area of the map that can be stored with the capacity of the external storage medium unit 11, for example, 4.8 MB, centering on the center position (S2), and sets the determined range to the set scale. The map data is read by (S3). When reading, the CPU 4 reads the character data closest to the center position of the map data as the title of the map data overnight (S4). The CPU 4 stores the map data read from the map information supply media unit 19 together with the title in the external storage media unit 11 (S5).

If there is enough space in the external storage media unit 11, other map data can be stored. In the present embodiment, an external storage medium of 32 MB is used, and five map data are stored d s by the above-described fetch operation.

Next, referring to FIG. 4, the operation of displaying a map taken after the operation device A1 is separated from the main device B1 will be described.

First, the user instructs the user to display a list of map data captured using the screen operation unit 3 with the evening pen 27 (S11). Upon receiving this instruction, the CPU 4 reads the character data taken as the title of the map data and the map coordinates representing the area of the map data when the map data is taken (S12). Next, the CPU 4 compares the pre-positioned current position with its map coordinates. (S13), a flag is set if the map coordinates include the current position (S14). _C Then, the CPU 4 refers to the flag, marks the map data including the current position and displays the map data. The title of each map is displayed as a list in 2 (S15). Fig. 5 shows the display screen at this time, showing the map marks 41 and 42 including the map title, scale, and current location.

Next, when the user selects one of the map data, for example, “D—C enter” from the list via the screen operation unit 3 (S16), the CPU 4 refers to the flag and reads this map data. It is determined whether or not the current position is included overnight (S17 The map whose title is “D—C enter” includes the current position. The current position mark 43 is superimposed and displayed so as to be at the center position, so that the user can immediately recognize the current position, and immediately grasp the map in each direction of east, west, north and south from the current position. If a map that does not include the current position is selected in step 7, only the map is displayed and the current position is not displayed, as shown in Figure 7.

As described above, according to the present embodiment, a list of the titles of the map data taken into the storage media unit 11 is displayed, so that the user can recognize at a glance in which region the map data has been taken. CPU 4 displays character data included in the map data as a title in a list. The character data included as the title is character data located near the center of the map data area, so that the user can recognize the approximate recording range just by looking at the list.

According to the present embodiment, the CPU 4 determines the map data information including the current position from the plurality of map data stored in the external storage medium unit 11 based on the current position measured by the GPS unit 5. Then, the title of the map data is displayed in a distinguishable list. This allows the user to easily select the map on which the current position is displayed. In the present embodiment, the character data included in the map data is the title of the map data, but the user may input character data. In this case, the user can more easily recognize the map information represented by the title of s. Industrial applicability

With the map display device of the present invention, the user can recognize the area of the captured map by displaying only the title of the captured map as a list.

Claims

The scope of the claims

1. A storage media unit for storing map data,

A display unit for displaying the map data and a title corresponding to the map data,

An operation unit for selecting the displayed title;

A control unit for displaying map data corresponding to the selected title on the display unit;

A map display device comprising:

2. The map data includes figure data and character data,

2. The map display device according to claim 1, wherein said display unit displays said character data as said title.

3. The map display device according to claim 2, wherein the character data is located closest to the center of the map data area.

4. Equipped with a positioning unit that measures the current position,

The control unit determines whether the current position is included in the map data area.If the control unit determines that the current position is included in the map data area, the current position is included in the map data area. The map display device according to claim 1, wherein a mark indicating inclusion is displayed on the display unit together with the title.

5. The control unit displays a mark indicating the current position on the display unit together with the map data when the control unit determines that the current position is included in the map data area. The map display device described in the item.

6. The map display device according to claim 5, wherein the control unit displays the mark indicating the current position at a substantially central position of the display unit.

7. An operation device that houses the storage media unit, the display unit, the operation unit, and the control unit;

A map information supply media unit detachable from the operation device and supplying the map data to the storage media unit;

The map display device according to claim 1, further comprising: