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. 29, 1985
Filed:
Jun. 22, 1983
John S Young, Scottsdale, AZ (US);
Gte Automatic Electric Inc., Northlake, IL (US);
Abstract
A ringing generator testing arrangement for a digital telephone network is shown comprising a zero crossing detector connected to the ring lead of a line circuit under test. The zero crossing detector gates a clock signal into a counter circuit during the negative to positive transition of the ringing generator signal positive half cycle. The counter circuit advances until the next positive to negative transition of the ringing generator signal. At this time, the zero crossing detector cuts off the clock signal and the counter circuit transmits to a central control complex a count representing a measured interval of the ringing generator positive half cycle.