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. 21, 1998
Filed:
Mar. 04, 1997
Applicant:
Inventor:
Masaharu Kawamura, Kanagawa-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
348372 ; 348375 ; 396301 ; 396279 ;
Abstract
A video camera comprises a built-in secondary battery, a terminal used for connection with an external power source, and a main switch for controlling the supply of electric power to a circuit part provided for a control system and a signal processing system. The video camera is arranged such that the circuit part is connected to the built-in secondary battery or to the external power source when the main switch is closed and that the built-in secondary battery can be connected to the external power source when the main switch is open.