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. 10, 2004
Filed:
Dec. 19, 1996
Ken Terasawa, Yokohama, JP;
Yuichiro Hattori, Yokohama, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
Two image signals from a non-interlace scanning type CCD at predetermined horizontal and vertical sampling frequencies are respectively inputted to automatic gain controllers, then to a color separator where the input signals are separated into luminance signal and color difference signals. The luminance signal is processed by a two-dimensional filter which traps frequency components having ½ of the horizontal and vertical sampling frequencies. Accordingly, a variation in amplification characteristics of the automatic gain controllers is compensated as a variation of luminance signals having Nyquist frequencies in the horizontal and vertical directions. Thereby, bad effect due to variations in amplification characteristics of the automatic gain controllers is reduced even through two output signals from the non-interlace scanning type CCD are processed by the respective automatic gain controllers.