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:
Nov. 18, 1986
Filed:
Jul. 19, 1985
Kunihisa Hoshino, Urawa, JP;
Nippon Kogaku K. K., Tokyo, JP;
Abstract
A solid state image pickup apparatus can obtain a constant photoelectric transfer output even if an incident light intensity is very high, so that a signal processing circuit to be connected to an output of the apparatus can be simplified in configuration and only low voltage and low power are required. In the apparatus, an incident light intensity on a photoelectric transfer surface is detected, and a charge stored time is decreased in accordance with an increase in the incident light intensity. When the incident light intensity falls within a normal range, the transfer gate clock pulse is controlled to have a predetermined pulse width so as to allow transfer of the photoelectric transfer charge to the CCD shift register. Thus, a substantially constant photoelectric transfer output can be obtained. When the incident light intensity is high, the pulse width of the transfer gate clock is decreased. When the transfer gate clock pulse is controlled to have a short pulse width in this manner, a substantially constant photoelectric transfer output can be obtained irrespective of the incident light intensity.