Digital video distribution system
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United States of America Patent
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Dec 12, 2000
Grant Date -
N/A
app pub date -
Nov 12, 1997
filing date -
May 12, 1997
priority date (Note) -
Expired
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Abstract
A digital video distribution system is disclosed which includes video terminals connected within a LAN and distributes video from a certain terminal to destination terminals, simultaneously. In this system, each transmitter terminal has an encoder that converts analog video information from a corresponding video source to digitally compressed video information. A hub are connected to the video terminals to distribute digitally compressed video information from a transmitter terminal to multiple destination (receiver) terminals in accordance with a multicast communication protocol. Each of the receiver terminals has an address filter for selecting a packet from among multicast communication packets that has a desired source address as valid video information. The receiver further has a decoder for converting digitally encoded information received as valid to original analog video information with expansion.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- NTT ELECTRONICS CORPORATION;PHILIPS ELECTRONICS NORTH AMERICA CORPORATION;TOKYO BROADCASTING SYSTEM, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hayashi, Toshinari | Tokyo, JP | 4 | 135 |
Okunaka, Junzo | Funabashi, JP | 1 | 115 |
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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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