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:
Aug. 17, 2010
Filed:
Dec. 15, 2008
Tsukasa Yagi, Hyogo, JP;
Tsukasa Yagi, Hyogo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A synchronization circuit includes a first flip-flop circuit to hold an input signal which is asynchronous to a clock signal by the clock signal, and output an output signal, a second flip-flop circuit to hold the input signal by a signal of an opposite phase to the clock signal and output a signal, a comparing unit to compare the input signal and the output signal of the first flip-flop circuit and output a signal with a high or low level depending on whether the input signal and the output signal of the first flip-flop circuit have the same level, a selection unit to select one of the output signal of the first flip-flop circuit and the output signal of the second flip-flop circuit depending on the level of the signal outputted by the comparing unit, and a third flip-flop circuit to output the output signal selected by the selection unit.