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:
Jul. 25, 1989
Filed:
Dec. 13, 1988
Mutsumi Inuma, Yokohama, JP;
Masao Suzuki, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an image pickup system such as a video camera having an adjusting circuit for adjusting a white balance in a color image signal, each interchangeable lens has a device for providing information on the spectral characteristic inherent in the lens. In one embodiment, a microcomputer is provided for processing the information on the spectral characteristic inherent in the lens. When the lens is mounted on the camera body incorporating the adjusting circuit, the information on the spectral characteristic of the lens is transmitted into the camera body by a mechanical arm whose length is representative of the spectral characteristic of the lens, thereby enabling the adjusting means to make a proper adjustment of the white balance for each lens having a different predetermined spectral characteristic.