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:
Jun. 14, 2005
Filed:
Nov. 09, 2000
Fumio Nakano, Tokyo, JP;
Hitoshi Fujita, Tokyo, JP;
Fumio Nakano, Tokyo, JP;
Hitoshi Fujita, Tokyo, JP;
NEC Electronics Corporation, Kawasaki, JP;
Abstract
A clock ride-over circuit in which clock ride-over may be achieved even if jitter is contained in clocks prior to and subsequent to ride-over and no control input signal for write and readout is applied from outside. A clock prior to rideover CLKis detected by a clock subsequent to ride-over CLKwhich is of a higher speed than the clock prior to ride-over. A timing signal TIM of a constant period, generated by a counter adapted for self-running with the clock prior to ride-over, is compared to the phase comparison signal COMP which is the result of the clock detection. Stable clock ride-over is possible by the phase comparison signal COMP having a pulse width larger than the jitter period of the clock subsequent to ride-over.