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:
Jun. 22, 2004
Filed:
Sep. 28, 1998
Fujio Okada, Omiya, JP;
Itsuji Minami, Omiya, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
The circuit according to the present invention is a signal transmission circuit for a solid-state image pickup device which performs favorable signal transmission by suppressing heat production around an image pickup device to a minimum level. This circuit is used for transmitting video signals output from a CCD to a signal processor of a processing unit by way of a transmission line, and comprises, at a stage subsequent to the CCD, a complementary circuit composed of two current controlling diodes, a first transistor, a second transistor and a plurality of resistors. This complementary circuit operates the first transistor and the second transistor alternately, thereby outputting video signals from the CCD as positive and negative signals taking 10 V, for example, as standard. Such an operation of class B eliminates a necessity to supply a bias current, thereby preventing heat production from the transistors and resistors due to application of a bias current.