CA2106828A1 - Interactive Television Multicasting - Google Patents

Interactive Television Multicasting

Info

Publication number
CA2106828A1
CA2106828A1 CA2106828A CA2106828A CA2106828A1 CA 2106828 A1 CA2106828 A1 CA 2106828A1 CA 2106828 A CA2106828 A CA 2106828A CA 2106828 A CA2106828 A CA 2106828A CA 2106828 A1 CA2106828 A1 CA 2106828A1
Authority
CA
Canada
Prior art keywords
different
program
components
segments
converter
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2106828A
Other languages
French (fr)
Other versions
CA2106828C (en
Inventor
Donald E. Blahut
Edward S. Szurkowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2106828A1 publication Critical patent/CA2106828A1/en
Application granted granted Critical
Publication of CA2106828C publication Critical patent/CA2106828C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests

Abstract

Different components of television programs, such as the video and audio components or different time segments of the program, are assigned to different channels transmitted in the form of packetized digital information in at least one of the channels of a multi-channel cable television distribution system. A
particular subscriber's converter is configured to receive a particular subset of program components by enabling the converter to receive the virtual channels carrying the components in such subset. An embodiment is disclosed in which different combinations of program segments are enabled for different subscribers.
Another embodiment is disclosed in which the viewing of a program by multiple subscribers who begin viewing at different times is synchronized by using "filler"
program segments having different lengths.
CA002106828A 1992-10-23 1993-09-23 Interactive television multicasting Expired - Lifetime CA2106828C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US965,493 1992-10-23
US07/965,493 US5446490A (en) 1992-10-23 1992-10-23 Interactive television with tailored programming

Publications (2)

Publication Number Publication Date
CA2106828A1 true CA2106828A1 (en) 1994-04-24
CA2106828C CA2106828C (en) 1999-02-16

Family

ID=25510049

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002106828A Expired - Lifetime CA2106828C (en) 1992-10-23 1993-09-23 Interactive television multicasting

Country Status (5)

Country Link
US (1) US5446490A (en)
EP (1) EP0594350B1 (en)
JP (1) JP3014907B2 (en)
CA (1) CA2106828C (en)
DE (1) DE69322482T2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8902369B2 (en) 2006-06-16 2014-12-02 Thomson Licensing Multichannel digital cable tuner

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US5446490A (en) 1995-08-29
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CA2106828C (en) 1999-02-16

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