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:
Feb. 02, 1993
Filed:
Sep. 06, 1991
Kazumi Yamamoto, Yokohama, JP;
Masayuki Sugasawa, Tokyo, JP;
Ikegami Tsushinki Co., Ltd., Tokyo, JP;
Abstract
A circuit for producing a brightness signal from output color signals of a solid state image pick-up apparatus. The circuit comprises a delay circuit for delaying an output signal generated by one solid state image sensor by a delay time corresponding to one-half of a spatial sampling period so that the phase of the output signal of the one solid state image sensor is made to coincide with the phase of an output signal of another solid state image sensor. A first filter is provided for cutting off higher frequency components contained in the output signal of the delay circuit and in the output signal of the other solid state image sensor, and a signal processor is provided for processing output signals of the first filter. A first matrix adds output signals of the signal processor to each other at a predetermined ratio to produce a first brightness signal, and a second matrix adds the output signal of the delay circuit and the output signal of the other solid state image sensor to each other at a ratio of 1:1 to derive a second brightness signal. A second filter extracts a high frequency component from the second brightness signal, and an adder adds the high frequency component derived by the second filtering means to the first brightness signal.