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. 07, 2000
Filed:
Jul. 03, 1996
Terumi Takashi, Chigasaki, JP;
Akihiko Hirano, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A phase-locked loop included in a reproduce signal processing circuit which as a magnetic recording and reproducing device or the like. The phase-locked loop accurately detects a phase and can be operated at high speed. The phase-locked loop includes a data determining circuit for judging data at individual times from sampled data in a plurality of samples and an estimated data string generating circuit for examining the correlation between each data string and each known phase-locked data string and sequentially generating the known phase-locked data string closet to the data string. A sampling phase is detected by performing an arithmetic operation on the data string estimated by the estimated data string generating circuit and the sampled data.