WO2002007368A3 - System and method for backward-compatible modulation and demodulation of data using information embedding in television signals - Google Patents

System and method for backward-compatible modulation and demodulation of data using information embedding in television signals Download PDF

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Publication number
WO2002007368A3
WO2002007368A3 PCT/US2001/040997 US0140997W WO0207368A3 WO 2002007368 A3 WO2002007368 A3 WO 2002007368A3 US 0140997 W US0140997 W US 0140997W WO 0207368 A3 WO0207368 A3 WO 0207368A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
signals
backward
receiver
embedded
Prior art date
Application number
PCT/US2001/040997
Other languages
French (fr)
Other versions
WO2002007368A2 (en
Inventor
Brian Chen
Gregory W Wornell
Original Assignee
Chinook Communications Inc
Brian Chen
Gregory W Wornell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chinook Communications Inc, Brian Chen, Gregory W Wornell filed Critical Chinook Communications Inc
Priority to AU7358601A priority Critical patent/AU7358601A/en
Publication of WO2002007368A2 publication Critical patent/WO2002007368A2/en
Publication of WO2002007368A3 publication Critical patent/WO2002007368A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2385—Channel allocation; Bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/106—Adaptations for transmission by electrical cable for domestic distribution

Abstract

A backward-compatible cable modem system enables transmission and reception of embedded data over a CATV network (199). The system includes, on the modulation side (headend), an information embedder (220), embedding first set of data into host signals generating composite signals. The composite signals are watermarked versions of the host signals. The composite signals and a second set of data are multiplexed (230), along with TV signals that haven't been embedded with the first set of data (non-host signals). The multiplexed signals are transmitted to the user. At the receiver (190A), the composite signals are selected and provided to an information extractor (290A). The information is extracted from the composite signals to produce the embedded first set of data. Also, the second set of data is demultiplexed at the receiver using the conventional cable demodulator. Transformers (240, 280A, 270A) may be included at the head end and/or the receiver to transform TV signals between source format and broadcast format and/or between baseband and broadcast band. Some or all of the first and second sets of data may be same data.
PCT/US2001/040997 2000-07-14 2001-06-14 System and method for backward-compatible modulation and demodulation of data using information embedding in television signals WO2002007368A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU7358601A AU7358601A (en) 2000-07-14 2001-06-14 System and method for backward-compatible modulation and demodulation of data using information embedding in television signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61629900A 2000-07-14 2000-07-14
US09/616,299 2000-07-14

Publications (2)

Publication Number Publication Date
WO2002007368A2 WO2002007368A2 (en) 2002-01-24
WO2002007368A3 true WO2002007368A3 (en) 2002-07-04

Family

ID=24468848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/040997 WO2002007368A2 (en) 2000-07-14 2001-06-14 System and method for backward-compatible modulation and demodulation of data using information embedding in television signals

Country Status (2)

Country Link
AU (1) AU7358601A (en)
WO (1) WO2002007368A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9929887B1 (en) 2016-09-28 2018-03-27 The Mitre Corporation Backward-compatible signal variations for data augmentation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793892A (en) * 1995-06-27 1998-08-11 Motorola, Inc. Method and system for compressing a pixel map signal using dynamic quantization
US5930369A (en) * 1995-09-28 1999-07-27 Nec Research Institute, Inc. Secure spread spectrum watermarking for multimedia data
US5960081A (en) * 1997-06-05 1999-09-28 Cray Research, Inc. Embedding a digital signature in a video sequence
US5991426A (en) * 1998-12-18 1999-11-23 Signafy, Inc. Field-based watermark insertion and detection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793892A (en) * 1995-06-27 1998-08-11 Motorola, Inc. Method and system for compressing a pixel map signal using dynamic quantization
US5930369A (en) * 1995-09-28 1999-07-27 Nec Research Institute, Inc. Secure spread spectrum watermarking for multimedia data
US5960081A (en) * 1997-06-05 1999-09-28 Cray Research, Inc. Embedding a digital signature in a video sequence
US5991426A (en) * 1998-12-18 1999-11-23 Signafy, Inc. Field-based watermark insertion and detection

Also Published As

Publication number Publication date
WO2002007368A2 (en) 2002-01-24
AU7358601A (en) 2002-01-30

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