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:
Feb. 01, 2005
Filed:
Oct. 18, 2000
Toshihiro Matsumura, Shiga, JP;
Sojiro Ota, Hyogo, JP;
Toshihiro Matsumura, Shiga, JP;
Sojiro Ota, Hyogo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A clock generation apparatus generates a synchronous clock based on an input analog signal. The average of maximum and minimum values of a digital signal in a predetermined period is used as a threshold. Rise and fall times which are times when the threshold and an approximated line of two values of the digital signal crosses are detected. The time intervals between the adjacent rise and fall times are obtained during a predetermined period. The minimum value of the time intervals is used as the input rate. The synchronous clock is output on the basis of the input rate and the rise and fall times. The synchronous clock and a comparison signal which is obtained by comparing the threshold and the digital signal are supplied to a latch circuit, thereby outputting a synchronous signal.