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:
Aug. 10, 1982
Filed:
May. 27, 1980
Robert D Streeter, Fort Wayne, IN (US);
The Magnavox Company, New York, NY (US);
Abstract
A digital detector for a 5 Hz signal is combined with a detector for Manchester encoded data with a frequency of 2.5 Hz. The preferred apparatus includes a signal generating means in the form of an oscillator which generates a signal of a known frequency higher than that of the 5 Hz signal. This oscillator is connected to a frequency responsive means and to the circuit in which 2.5 Hz and 5 Hz signals are to be detected. The frequency responsive means produces an output signal in response to the generation of a given number of cycles of said higher frequency signal during one half of any cycle of said predetermined low frequency signals. Also connected to the frequency responsive means and to the circuit in which the predetermined low frequency signals are to be detected is a detection signal means. This produces a detection signal in response to the reception of an output signal from the frequency responsive means and a signal indicating the end of a half cycle of either the 2.5 Hz or 5 Hz signal.