The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 1997
Filed:
Apr. 13, 1995
Yasuhiko Yamane, Osaka-fu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
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.