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. 06, 1982
Filed:
Jan. 17, 1980
Applicant:
Inventors:
Assignee:
Le Materiel Telephonique Thomson-CSF, Columbes, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364724 ;
Abstract
A digital filter for shared-time processing on several channels. The filter has several elementary cells (C.sub.1 to C.sub.K), each comprising a read-write memory (M.sub.1 to M.sub.K), a read-only memory (H.sub.1 to H.sub.K), and an arithmetic unit (U.sub.1 to U.sub.K). A page address counter CT.sub.1, a word address counter CT.sub.2 and a weighting coefficient address counter CT.sub.3 are common to the cells. Delayed discrete values are transferred by the relative addressing of the memory words. The filter will find particular application as a half-band extrapolator filter for telephone switching.