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:
Feb. 27, 2007
Filed:
Apr. 28, 1999
Christopher K. Wolf, San Jose, CA (US);
Ygal Arbel, Belmont, CA (US);
Himanshu A. Sanghavi, Fremont, CA (US);
Christopher K. Wolf, San Jose, CA (US);
Ygal Arbel, Belmont, CA (US);
Himanshu A. Sanghavi, Fremont, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A system () for decoding a data stream allocated into data packets contains a control unit (), a stream demultiplexer (), audio and video decoders (and), a memory management unit (), and audio and video input and output buffers. Upon demultiplexing and depacketizing the data packets without interrupting the control unit, the demultiplexer sends encoded audio and video data to the audio and video input buffers. Video messages dealing with video timing information and identifying where encoded video data is stored in the video input buffer are furnished by the demultiplexer for use by the control unit. Utilizing corresponding video instructions provided from the control unit, the video decoder decodes encoded video data to produce decoded video data supplied to the video output buffer. The audio decoder decodes encoded audio data to produce decoded audio data supplied to the audio output buffer. The memory management unit controls transfer of decoded audio data to and from the audio output buffer.