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:
May. 02, 1978
Filed:
Sep. 21, 1976
Nippon Tsu Shin Kogyo K.K., Kawasaki, JA;
TIE/Communications, Inc., Stamford, CT (US);
Abstract
A counting circuit is disclosed which generates an electrical representation corresponding to the number of pulses in a plurality of pulse trains, each pulse train containing at most ten pulses. The circuit does not start to count the number of pulses in individual pulse trains until a first pulse train with more than a preselected number of pulses is received. The circuit then counts each pulse in subsequently received pulse trains for a preselected number of pulse trains. The circuit is particularly useful in key telephone dial pulse signalling apparatus as a register circuit which is not responsive to false pulses generated by lifting the handset.