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:
Oct. 16, 2012
Filed:
Feb. 25, 2009
Shuji Suzuki, Tokyo, JP;
Shuji Suzuki, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
There is provided a blink signal detection circuit which can clearly detect a blink signal of a blinking measurement target even if the measurement target moves. The blink signal detection circuit includes: a plurality of storage media that record image information shot by an imaging device at respective times, the image information showing a light-dark change in brightness of the measurement target which is blinking; an image information enlargement unit (pixel information enlargement circuit) that enlarges a plurality of pieces of image information at the respective different times with reference to a spatial axis, thereby generating a plurality of pieces of enlarged image information at the respective different times; and a correlation detection unit (correlation integration circuit) that performs correlation detection between the plurality of pieces of enlarged image information at the respective different times. The blink signal detection circuit detects the blink signal of the measurement target from a result of correlation detection obtained by the correlation detection unit.