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. 20, 1995
Filed:
Jun. 01, 1992
Martin A Parker, Penfield, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Unwanted artifacts can occur in the output of a linear CCD sensor, caused by switching the exposure gate control voltage from a high level to a low lever to begin exposure while the device is reading out. A novel gate driver circuit for driving a lateral overflow gate of the CCD sensor provides a constant current path between the gate electrode and a low potential source. When a connection to a high potential source is opened to begin exposure, energy stored in a capacitance associated with the gate flows through the constant current path. This causes the gate voltage to move slowly and smoothly to the low potential and thus eliminates the unwanted artifacts.