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:
Nov. 05, 2002
Filed:
Jan. 21, 1999
Satoshi Itoi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A video/audio data coding circuit receives video/audio signals and compresses and multiplexes them. A recording signal processing circuit shuffles the audio/video data, adds ECCs, and codes them for recording. A CPU control circuit controls a control ECC block addition circuit to generate control ECC blocks and sends them to the recording signal processing circuit. At the same time, the CPU control circuit controls an optical head and a spindle motor. The data is written onto a disc by the optical head. And, after editing, the control ECC blocks are written. At playback time, the control ECC blocks are read from the disc and sent to a control ECC block playback circuit where they are played back. The CPU control circuit controls the optical head, spindle motor, and so on with the played-back control ECC blocks and commands. Video/audio data is read from the disc by the optical head. A played-back signal processing circuit decodes the data, checks for errors, and de-shuffles the data. A video/audio data decoding circuit decompresses and outputs the video/audio data.