Image analysis – Image compression or coding
Patent
1997-10-29
2000-12-12
Couso, Jose L.
Image analysis
Image compression or coding
382239, 348446, G06K 936
Patent
active
061609153
ABSTRACT:
The present invention enables a stable signal reproduction without overflow or underflow of a buffer in a decoder system even if a transmission bit rate is changed. In particular, when coding and transmitting a digital signal at a variable bit rate, a size of an encoder buffer for temporarily storing a coded signal in an encoder system is controlled according to a coding bit rate from a terminal. The encoder buffer has a code buffer to be used for rate control by the encoder system. The size of this code buffer is determined according to a reception buffer size of a decoder system supplied from a terminal, a maximum value of a coding bit rate supplied from a terminal, and a current bit rate.
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patent: 5771357 (1998-06-01), Kato et al.
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patent: 5864368 (1999-01-01), Kato et al.
International Standard, ISO/IEC 11172-2, First Edition, Aug. 1, 1993, Annex C, "Information Technology--Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to About 1,5 MBIT/S--Part 2: Video".
International Standard, ISO/IEC 13818-2, First Edition, May 15, 1996, Annex C, "Information Technology--Generic Coding of Moving Pictures and Associated Audio Information: Video".
U.S. application No. 08/958,569, filed Oct. 28, 1997.
U.S. application No. 08/167,415, filed Dec. 14, 1993.
Kato Motoki
Koyanagi Hideki
Couso Jose L.
Do Anh Hong
Oh Seong-Kun
Sony Corporation
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