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:
May. 23, 2006
Filed:
Mar. 20, 2001
Kanji Mihara, Kanagawa, JP;
Takuya Kitamura, Kanagawa, JP;
Takao Suzuki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In the video data compression apparatus, the host computercontrols the operation of the constituent parts of the video data compression apparatus. Further, the host computerreceives the amount of data of the compressed video data generated by preliminarily compressing and coding the noncompressed video data VIN by the encoderof the simplified two pass processing unit, the value of the direct current component (DC component) of the video data after the DCT processing, and the power value of the alternating current component (AC component) via a control signal Cand calculates the difficulty of the pattern of the compressed video data based on these received values. Further, the host computerallocates the target amount of data Tof the compressed video data generated by the encodervia the control signal Cfor every picture based on the calculated difficulty, sets the same in the quantization circuit(FIG.) of the encoder, and adaptively controls the compression rate of the encoderin units of pictures.