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:
Jun. 15, 2004
Filed:
Aug. 13, 2001
Yorio Takahashi, Ehime, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A disc playback system according to this invention, as shown in FIG. , comprises a pickup for reading information from an information disc on which data are recorded at a constant linear velocity, a disc motor 16 for rotating the information disc , a digital signal processing means for digitizing data according to the playback format of the information disc , an interface means for transmitting the digitized data to an external device and a buffer memory for temporarily containing the data, and further includes a means for detecting the linear velocity and track pitch of the information disc to decide the reference value for the velocity control of the disc motor on the basis of the detected values of the linear velocity and track pitch and the value of the maximum radius of the data record area. According to the so-constructed disc playback system, the maximum playback velocity of the system can be obtained even in the case of discs having different track pitches.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile