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. 21, 2016
Filed:
Feb. 28, 2014
Rohm Co., Ltd., Kyoto, JP;
Hiroyuki Ishii, Kyoto, JP;
Tatsuro Shimizu, Kyoto, JP;
ROHM CO., LTD., , JP;
Abstract
A motor driving circuit may include a timing detection circuit configured to receive a signal that corresponds to the Hall signal output from the Hall sensor, and to generate a timing signal which is asserted at a predetermined timing in every cycle of the Hall signal. The timing detection circuit may include a counter configured to perform a counting operation according to a clock signal; a reset unit configured to reset a count value of the counter for every cycle of the counter, to a value obtained by multiplying the count value obtained immediately before the reset operation by a negative coefficient; and a comparison unit configured to assert the timing signal at every timing at which there is a zero-crossing in the value of the counter.