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. 06, 1984
Filed:
Feb. 25, 1982
Keiji Tomooka, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A clock extractor is disclosed in which an input data signal is sampled and held in accordance with a sampling frequency, the input data signal thus processed is subjected to equalization and amplification, a difference in voltage (namely, height) is detected between those portions of a waveform obtained after the equalization and amplification which appear before and after a time when the waveform has a maximum voltage amplitude, a phase of that portion of the waveform which has the maximum voltage amplitude, is determined by making the above-mentioned difference equal to zero, and a clock signal synchronized with the portion having the maximum voltage amplitude is extracted and reproduced from the input data signal.