
US Patent No: 5,448,568
Number of patents in Portfolio can not be more than 2000
System of transmitting an interactive TV signal
Stats
-
Sep 5, 1995
Issued date -
Apr 28, 1994
filing date -
08/234,139
serial no -
In Force
status
Importance
Abstract
Apparatus and a method for formatting executable codes and data, defining interactive applications, with video and audio program material, for reliable and convenient access includes compressing (18, 21) audio and video programs according to a protocol such as MPEG. The compressed audio and video (A/V) programs are formed (19, 22) into transport packets. Interactive application programs associated with A/V programs are compiled (10) into functional modules, condensed and formed into transport packets. A module may be executable software or data. Further modules designated "Signal modules", are generated to condition respective receivers to suspend or resume execution of an interactive application. Video packets, audio packets and application packets are time division multiplexed (16) for transmission. Signal modules are multiplexed in the packet stream to appropriately reprogram respective receivers on the occurrence of such changes in received signal components.
First Claim
Related Publications
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,381,412 Multimedia communication apparatus | 98 | 1992 | |
| 5,392,284 Multi-media communication device | 61 | 1994 | |
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| 5,220,420 Interactive home information system for distributing compressed television programming | 267 | 1991 | |
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| 5,247,347 PSTN architecture for video-on-demand services | 761 | 1991 | |
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| 5,168,356 Apparatus for segmenting encoded video signal for transmission | 274 | 1991 | |
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| 4,264,925 Interactive cable television system | 236 | 1979 | |
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| 4,528,589 Method and system for subscription television billing and access | 170 | 1984 | |
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| 4,965,825 Signal processing apparatus and methods | 329 | 1987 | |
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| 5,191,573 Method for transmitting a desired digital video or audio signal | 257 | 1990 | |
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| 4,323,922 Television coding system with channel level identification | 95 | 1979 | |
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| 5,208,665 Presentation player for an interactive digital communication system | 327 | 1991 | |
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| 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM | 2009 | ||