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:
Apr. 26, 2005
Filed:
May. 30, 2002
Tetsuo Kadoshima, Saitama-ken, JP;
Michio Fujita, Saitama-ken, JP;
Yoshihiro Aso, Saitama-ken, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An information recording/reproducing apparatus which allows freer utilization of data compressed under different data compression schemes. When data recorded on a magneto-optical disc of an MD under the ATRAC compression scheme is converted into that of the ATRAC3 compression scheme and re-recorded on the magneto-optical disc, selector switches are changed over in a predetermined combination. The data recorded under the ATRAC compression scheme is read and demodulated by a signal processing unit. The demodulation data is decoded into linear PCM data by a data expansion decoder. The linear PCM data is converted into data of the ATRAC3 compression scheme by a data compression encoder. The resultant is modulated by the signal processing unit and re-recorded on the magneto-optical disc. Here, the track numbers of the data originally recorded under the ATRAC compression scheme are kept unchanged, and associated with the data which is converted and recorded under the ATRAC3 compression scheme. UTOC data thereof is recorded on the MD.
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