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. 01, 2002
Filed:
May. 22, 1998
Takeshi Kawamura, Tenri, JP;
Hironobu Katayama, Noda, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A digital recording/reproduction method and apparatus includes a data detection circuit for detecting a frequency of occurrence of a specific data value contained in an information signal, and a phase controller for controlling a phase of a sampling clock based on the frequency of occurrence of the specific data value detected by the data detection circuit. A threshold value in the data detection circuit is adjusted to maximize the frequency of occurrence of the specific data value contained in the information signal, and the phase of the sampling clock is controlled to minimize the amount of change in the frequency of occurrence of the specific data value contained in the information signal.