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:
Jul. 08, 2014
Filed:
Nov. 07, 2012
Fujitsu Semiconductor Limited, Yokohama, JP;
Satoshi Takashima, Kasugai, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
A data transfer system includes a transmission circuit, which operates by a first clock signal, and a receiving circuit, which operates by a second clock signal different from the first clock signal. The transmission circuit includes an output circuit that outputs a poll signal, of which a level is logically inverted in accordance with a transmission timing of transmission data from the transmission circuit to the receiving circuit. A first signal generating circuit receives the transmission data at a plurality of timings and generates plural sets of reception data corresponding to the plurality of timings. A second signal generating circuit receives the poll signal at the plurality of timings and generates synchronous poll signals corresponding to the plurality of timings. A data selecting circuit compares levels of the synchronous poll signals with each other and selects one of the sets of reception data based on the comparison result.