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. 24, 1999
Filed:
Apr. 10, 1996
Applicant:
Inventor:
Masaaki Suhara, Osaka, JP;
Assignee:
Keyence Corporation, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
23546214 ; 23546206 ; 23546222 ; 23546223 ; 23546224 ; 23546244 ; 235454 ;
Abstract
By a user setting process, the set values of a number of scans and the LED lighting-on pulse-width are written, in advance, into a set value table stored in an EEPROM. Before a measurement starts, a CPU reads out table set values from the EEPROM, and a CCD-drive control circuit drives a CCD image sensor at the maximum operating frequency. After the measurement starts, a light-projection LED drive circuit lights on the light-projection LED array on the basis of the set value of the LED lighting-on pulse-width. The CCD-drive control circuit changes the interval of the outputting of a CCD-drive control signals CD on the basis of the set value of the number of scans.