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:
Oct. 25, 2005
Filed:
Nov. 30, 2000
Kiyoshi Ishiyama, Tokyo, JP;
Kiyoshi Ishiyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A picture encoding system conversion device and a code rate conversion device for realizing the conversion taking into account both time delay and picture quality using the information on the code volume of the encoding parameters, input and output buffers and an input bitstream. There are provided a decoderincluding an input buffer, a VLD unit, an inverse quantizer, an IDCT unit, an adder, a frame memoryand a motion compensation prediction unit; an encoderincluding an adder, a DCT unit, a quantizer, an inverse quantizer, an IDCT unit, an adder, a frame memory unit, a motion compensation prediction unit, a VLD unitand an output buffer; and a transcoder controllerincluding a decoder monitor unit, an input buffer monitor unit, a reception transmission channel monitor, a sending transmission channel monitor, an output buffer monitor unitand a quantization step controller. The quantization step controllermodifies the quantization step of the encoder based on the information from the input buffer monitor, output buffer monitor, decoder monitor, reception transmission channel monitor and sending transmission channel monitor.