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:
Sep. 05, 1995
Filed:
Apr. 26, 1994
Junichi Muroi, Tokyo, JP;
Tatsumi Takagi, Tokyo, JP;
Nobuo Suzuki, Tokyo, JP;
Shigekazu Sakata, Saitama, JP;
Hideyuki Oikawa, Saitama, JP;
Tamura Electric Works, Ltd., Tokyo, JP;
Kokusai Denshin Denwa Co. Ltd., Tokyo, JP;
Abstract
A public telephone system includes a plurality of public telephone sets and a center apparatus. Each public telephone set includes a memory for storing a current tariff table used in the speech communication service and a revised tariff table including the tariff information from the center apparatus, a first timepiece unit for setting the time information from the center apparatus to perform a time counting operation, a first data memory for storing the change time information from the center apparatus, a determining unit for determining whether a current time counted by the first timepiece unit reaches a change time stored in the first data memory at a time of call originating, and a tariff processing unit for referring to the current tariff table in the memory to perform the tariff processing when the current time does not reach the change time and referring the revised tariff table in the memory as the current tariff table to perform the tariff processing when the current time reaches the change time on the basis of an output from the determining unit.