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:
Jul. 22, 1986
Filed:
Feb. 01, 1985
Applicant:
Inventors:
Assignee:
Midian Electronics, Inc., Tucson, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
179 / ; 34082548 ; 34082574 ;
Abstract
A programmable tone decoder for standard bell system DTMF tone pairs is presented which comprises an integrated DTMF receiver and a means for programming a sequence of digits which are compared to the output of the DTMF receiver. The decoding means provides an output for an exact comparison of the complete sequence, the output being indicative of the reception of a proper telephone code sequence.