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. 22, 2000
Filed:
Dec. 12, 1995
Kenichi Mori, Nagano, JP;
Shotaro Yokoyama, Nagano, JP;
Fuji Electric Co., Ltd., , JP;
Abstract
A method of detecting a phase difference between a pair of images of an object which are formed on a pair of optical sensor arrays through different optical paths, with presence of flare in one of the images, is disclosed. The method includes the steps of: preparing a sensor data group representing a pattern of each image and consisting of sensor data received from each optical sensor array; correcting the sensor data group so as to eliminate a difference in the average value of the sensor data between the optical sensor arrays; preparing a plurality of combinations each having two subgroups corresponding to the pair of optical sensor arrays, each subgroup consisting of a predetermined number of a series of sensor data, which are selected from the sensor data group corrected, such that a portion of the sensor data group from which the subgroup is selected is sequentially shifted; and selecting one of the combinations having a maximum degree of correlation between the subgroups, and detecting a phase difference from positions on the optical sensor arrays which correspond to the subgroups of the selected combination.