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.

Date of Patent:
Nov. 24, 1987

Filed:

Oct. 02, 1985
Applicant:
Inventor:

Robert J Crawford, Elgin, IL (US);

Assignee:

Motorola, Inc., Schaumburg, IL (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364724 ;
Abstract

A circuit arrangement for filtering input signals carried on PCM channels. The circuit arrangement includes a plurality of digital signal processors arranged in a parallel manner each having a set of filtering operations, a multiplexer for distributing the input signals to each digital signal processor, a processor for analyzing frequency characteristics output by the digital signal processors and an addressing PROM for controlling a correspondence between the PCM channels and the filtering operations in each of the digital signal processors.


Find Patent Forward Citations

Crawford, Robert. (1987). Programmable multifrequency digital tone receiver (U.S. Patent No. 4709344). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4709344

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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