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:
Jan. 31, 1978
Filed:
Apr. 02, 1976
Charles Robert Hewes, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A charge coupled amplifier wherein an output voltage proportional to the difference between two input voltages is achieved through use of different value capacitances associated with the signal input and signal output structures of the amplifier. The input capacitance is defined in one embodiment using a doped substrate region beneath a biased electrode located between the signal input gates. In a modified structure, increased area input gate electrodes are used to define the input capacitance. A CCD transversal filter employing split electrode tap weighting which together with associated charge coupled input and output amplifiers form part of a single semiconductor chip.