Method and apparatus for permitting a viewer to scan through a plurality of video signals provided by a transmitter
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United States of America Patent
Stats
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Sep 17, 1996
Grant Date -
N/A
app pub date -
Jul 7, 1995
filing date -
Jul 12, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for providing a receiver a high quality video signal and a plurality of lower quality video signals which can be zapped, i.e., searched through at any given time, via a channel having a limited data capacity. A first set of high quality video signals is present at a transmitter, e.g., fifty programs having a 10 Mbit/s data rate. A second set of video signals which is a subset of the first set of video signals is sent to the receiver in response to a control signal which indicates the programs a viewer has selected to be viewed at high quality, e.g., using the full 10 Mbit/s of data. A third set of video signals is also sent from the transmitter to the receiver. This third set of video signals represents low quality programs, e.g., signals having a 1 Mbit/s data rate, which can be searched. The video signals in the third set of video signals correspond to signals in the first set of video signals but have a video data content that is only a fraction of that of the corresponding video signals. When all programs present at the transmitter are supplied to the receiver as lower quality, e.g., 1 Mbit/s, video signals, it is possible to search through all the programs without having to send the transmitter a control signal to implement the search and without overloading the data capacity of the channel used to provide the video signals.

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- 15 United States
- 10 France
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KONINKLIJKE PTT NEDERLAND N V | STATIONSWEG 10 9726 AC GRONINGEN 9726 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gabri, el Christiaan M W | Leiden, NL | 1 | 48 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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