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:
Jan. 31, 2006
Filed:
Oct. 08, 1999
Tomoyuki Nonomura, Osaka, JP;
Mitsuhiro Inoue, Studio City, CA (US);
Masataka Minami, Burbank, CA (US);
Masayuki Kozuka, Arcadia, CA (US);
Tomoyuki Nonomura, Osaka, JP;
Mitsuhiro Inoue, Studio City, CA (US);
Masataka Minami, Burbank, CA (US);
Masayuki Kozuka, Arcadia, CA (US);
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A data recording and reproduction apparatus is provided with a stream attribute decision means for deciding whether an audio data stream supplied from an outside source is compressed or not. A compression ID flag having a value according to the result of the compression decision is attached to the audio data stream, and the flag-attached audio data stream is written in a stream storage unit. Therefore, a watermark can be inserted in a compressed audio data stream after reading the compressed audio data stream from the stream storage unit, whereby the time required for writing the compressed audio data stream in the stream storage unit is reduced, and the quality of analog audio data obtained by reproducing the compressed audio data stream is prevented from being degraded.