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:
Jan. 24, 1984
Filed:
Dec. 21, 1981
Applicant:
Inventor:
Gerald M Rinaldi, Mundelein, IL (US);
Assignee:
GTE Automatic Electric Labs Inc., Northlake, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03D / ;
U.S. Cl.
CPC ...
328138 ; 307523 ; 3072 / ; 328120 ;
Abstract
A pulse toggle monitor circuit which detects toggling of a monitored pulse. A plurality of detection circuits are connected in a shift register manner. This arrangement provides for detection of pulse toggling of a duration longer than a predetermined time as defined by the period of an external reference signal and the number of detection circuits. The output of the shift register is connected to a storage circuit which is clocked by the reference signal and operates to store failure signals from the shift register. The storage circuit can be cleared either by external control or detection of a valid pulse.