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:
Oct. 22, 1996
Filed:
Jun. 16, 1994
Kunihiko Yamada, Tanishi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A video camera is provided in which an effective image plane is not affected even if a command to write data is supplied from a microcomputer to a signal processing portion in an effective video period. A plurality of control registers are provided in an interface portion. If a command to write data is supplied from the microcomputer to the signal processing portion in an effective video period for a video signal, data, which must be transferred, and address are temporarily stored in the registers and the stored signals are transferred to the signal processing portion in a retrace line period for a next video signal. As a result of the structure, data is written on the signal processing portion in the retrace line period for the next video signal even if the command to write data is supplied from the microcomputer to the signal processing portion. Therefore, if data different from the data which must be transferred is supplied from the microcomputer to the register on which the data for the signal processing portion has been written, the effective image plane is not affected.