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:
Sep. 10, 2002
Filed:
Jul. 22, 1997
Toshihiko Yokoyama, Zama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a system when a camera head and a signal processing unit connected to each other, the signal processing unit inputs a synchronizing signal from an external device, and transmits reference signals, such as a clock signal, horizontal and vertical synchronizing signals based on the input synchronizing signal to the camera head. Further, the signal processing unit controls the camera head so as to select a predetermined signal and output it via a predetermined signal line. When the predetermined signal received by the signal processing unit, the signal processing unit detects phase difference between phase of the predetermined signal and one of the reference signals corresponding to the predetermined signal, and shifts the one of the reference signals so that the phase difference reduces. Thereby, the camera head and the signal processing unit are synchronized.