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:
Dec. 12, 1989
Filed:
Aug. 18, 1988
Nirmal S Virdee, Phoenix, AZ (US);
Siemens Transmission Systems, Inc., Phoenix, AZ (US);
Abstract
A digital activity detection circuit is provided for monitoring digital input signals such as telecommunications DS1 or DS2 signals, and for generating an alarm when a predetermined input signal loss threshold is reached, such that the input signal loss threshold does not vary with temperature, with component value or with power supply variations. Precise resolution and simplified hardware are achieved in a novel arrangement of counters in the signal activity detector to determine the resolution and signal loss threshold of the detector, all in a digital arrangement without the use of analog devices or retriggerable monostable multivibrators, and in an ASIC fabricable integrated circuit technology such as CMOS.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile