Television – Bandwidth reduction system – Data rate reduction
Patent
1995-04-13
1997-08-26
Au, Amelia
Television
Bandwidth reduction system
Data rate reduction
348415, 348405, H04N 736
Patent
active
056615230
ABSTRACT:
A moving picture coding apparatus for compressing moving picture video signal to a target amount "TARGET" which has an optimized size to properly fit in a disc. The moving picture video signal is divided into a plurality of groups of pictures (GOPs), each GOP has a plurality of frames. During a first cycle operation, the video signal is compressed by DCT unit and quantizer using a fixed parameter from a contant generator, and the following amounts are measured: compressed data amount "GOP(i)" in each GOP; compressed data amount "Frame(j)" in-each frame; and compressed data amount "GOP.sub.-- Total" in total GOPs. Using these measured amounts, appropriate size for each frame is calculated in a calculator. Then, in the second cycle operation, the video signal for each frame is compressed according to the calculated appropriate size, and recorded on a disc.
REFERENCES:
patent: 5144425 (1992-09-01), Joseph
patent: 5461420 (1995-10-01), Yonemitsu et al.
patent: 5515107 (1996-05-01), Chiang et al.
International Prganisation for Standardisation; ISO-IEC/JTC/SC29/WG11, Experts Groups on ATM Video Coding, pp. 56-59, dated Jul. 31, 1992.
Au Amelia
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Moving picture coding method and an apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Moving picture coding method and an apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moving picture coding method and an apparatus therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1991498