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. 05, 1977
Filed:
Nov. 26, 1975
Wulf-Christian Streckenbach, Hemmingen, DT;
Licentia Patent-Verwaltungs-G.m.b.H., Frankfurt am Main, DT;
Abstract
A circuit arrangement for evaluating a received control signal of the type including a first signal of a first predetermined frequency and of a time duration which represents information, and a second signal which immediately follows the first signal in time and has a second predetermined frequency different than the first frequency. In the circuit arrangement the time duration of the first signal is determined by feeding the oscillations of the first signal to a memory which stores a count representative of the number of received oscillations of the first signal, and serially discharging the contents of the memory upon receipt of the second signal and supplying the contents in series to an output terminal which is connected to the control circuit for evaluating and responding to the information.