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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.:

US 5416518 B1

PDFFull Text
Date of Patent:
May. 16, 1995

Filed:

Aug. 27, 1992

Camera auto focus system

Applicant:
Inventors:

Chuen-Chien Lee, Fremont, CA (US);

Teruyoshi Komuro, Santa Clara, CA (US);

Naoki Kawaguchi, Tokyo, JP;

Reiko Torii, Tokyo, JP;

Assignee:

Sony Electronics, Inc., Park Ridge, NJ (US);

Attorney:

Irell & Manella

Primary Examiner:

Michael T Razavi

Assistant Examiner:

Tuan V Ho

Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348349 ;
Abstract

A method an apparatus for automatically focusing cameras. An auto focus circuit detects highly bright objects contained within an image frame of a scene. If highly bright objects are not detected, an auto focus processor adjusts the focus of the camera to maximize high spatial frequency components of the image frame. The auto focus processor focuses on the highly bright objects by minimizing a count function that indicates the number of pixels having greater magnitude than a threshold reference.

Find Patent Forward Citations

Lee, Chuen-Chien. (1995). Camera auto focus system (U.S. Patent No. 5416518). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5416518

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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