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:
Jun. 04, 1991
Filed:
May. 03, 1988
Norman A Peppers, Belmont, CA (US);
James R Young, Palo Alto, CA (US);
Gerald A Pierce, Redwood City, CA (US);
Gregory K Myers, San Francisco, CA (US);
Other;
Abstract
In an apparatus for extracting primitive patterns included in an image such as a character or any other figure, the image subjected to primitive pattern extraction is optical multiplied by a multiplier to form simultaneously in parallel a plurality of optical pattern images of a substantially identical shape, and optical correlation calculation between the plurality of optical pattern images and the primitive patterns which are formed in the various types of primitive masks is performed individually and instantaneously, the various type of primitive masks being arranged at a position spaced apart by a predetermined distance therefrom, thereby detecting beams emitted through the various types of primitive masks. Image multiplication, optical correlation calculation between the primitive pattern and the optical pattern image, and transmission of the result of the optical correlation calculation to the photosensors can be simultaneously performed at the light propagation speed. The apparatus structure can be simplified at low cost, and primitive pattern extraction operations can be performed at high speed.