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:
Dec. 18, 1984
Filed:
Jan. 18, 1984
Canon Kabushiki Kaisha, , US;
Abstract
A color video camera includes an image pick-up device for converting images into electrical signals including a plurality of color signal elements, white picture forming circuitry for introducing a white picture to the image pick-up device and a white balance control for controlling a proportion of each color signal element contained in an output of the image pick-up device so as to have a prescribed ratio. A power source switch is included for supplying current to individual circuits in the video camera. The camera also includes an operation member having three positions. The member turns off the power source switch in a first position; it turns on the switch in a second position to control the white picture forming circuitry and introduces the white picture to the image pick-up device, thereby actuating the white balance control; in a third position it turns on the power source switch to control the white picture forming circuitry so as to prevent introduction of the white picture to the image pick-up device. The second position is located between the first and third positions.