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:
Apr. 28, 1981
Filed:
Oct. 03, 1979
Applicant:
Inventors:
Christian Auzet, Paris, FR;
Jean-Edgar Picquendar, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; G11C / ;
U.S. Cl.
CPC ...
333165 ; 3072 / ; 333166 ;
Abstract
Charge transfer filtering device which comprises a recursive filter and a non-recursive filter. The two filters on separate semiconductor substrates have charge injection means 12, 10 receiving the input signal E for the non-recursive filter 2 and the output signal S, previously phase-displaced by 180.degree. by means 9, for the recursive filter 1. Means 15, 16, common to both filters, ensure the reading and summation of the charge quantities weighted by means P and 14 and then the supply of the output signal S.