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:
Mar. 11, 2008
Filed:
Jun. 17, 2004
Shinobu Nakamura, Kanagawa, JP;
Mamoru Kudo, Kanagawa, JP;
Satoru Ooshima, Tokyo, JP;
Jun Yamane, Tokyo, JP;
Hirofumi Shimizu, Kanagawa, JP;
Shinobu Nakamura, Kanagawa, JP;
Mamoru Kudo, Kanagawa, JP;
Satoru Ooshima, Tokyo, JP;
Jun Yamane, Tokyo, JP;
Hirofumi Shimizu, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
A phase-locked-loop device includes a clock generator for generating a reference clock based on a binarized playback signal and a frequency of run-length data and for generating N-phase clocks using the reference clock, a pulse-length measuring device for measuring a pulse length of the binarized playback signal using the N-phase clocks to output pulse-length data, and a run-length-data extracting device for counting the pulse-length data based on a virtual channel clock to extract run-length data. Pulse-length data is generated using the N-phase clocks (e.g., 16-phase clocks). The pulse-length data is counted based on the virtual channel clock to extract run-length data. Thus, it is not needed to generate a high-frequency clock, and the operating frequency is maintained sufficiently low.