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:
Mar. 17, 1981
Filed:
Nov. 21, 1979
Applicant:
Inventors:
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H11C / ;
U.S. Cl.
CPC ...
333165 ; 3072 / ; 3072 / ; 333166 ;
Abstract
As all the weighting coefficients of the filter are positive, a weighted charge quantity is collected by a line beneath one of the elementary electrodes of each weighting electrode. A charge reading device is coupled to the line and supplies an electrical signal which is transmitted to the negative input of a differential amplifier, which receives the sampled input voltage of the filter at its positive input. The electrical output signal of the filter is taken, under low impedance, at the output of the differential amplifier, said signal being reinjected at the input of the filter by the injecting means.