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:
Oct. 11, 1983
Filed:
Nov. 03, 1980
Sakae Horyu, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A power saving type indicator apparatus for a telephone line. Existence of one of input signals on a telephone line is indicated by actuating an indicator and existence of the other is indicated by deactuating the indicator so that the consumption of electric power in indicating the presence and absence of the input signals is reduced substantially. Furthermore, in connection with another indicator apparatus which indicates the presence of the other input signal by actuating the indicator, indication of signals is so controlled as not to indicate the same signal by actuating two indicators at the same time. Thereby, a further saving of electric power in indicating such signals will be attained. By saving the electric power consumed in signal indication in this manner, a substantial extention of useful life of such a communications system is attained.