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:
Dec. 29, 1998
Filed:
Aug. 12, 1996
Applicant:
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348247 ;
Abstract
Image pick-up device reads image pick-up signals of all the pixels of CCD2 once when an optical system is in light intercepted state. By comparing the image pick-up signal from each pixel with a first threshold value THL1, a possibly defective pixels are extracted. Thereafter, by reading the image pick-up signals for a prescribed number of times from the CCD2, accumulated value of the image pick-up signals of each of the possibly defective pixels is calculated. Based on the result of comparison between the accumulated value corresponding to each of the possibly defective pixels and second threshold value THL2, an actually defective pixel is specified from the possibly defective pixels.