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:
Feb. 17, 1981
Filed:
Dec. 01, 1978
Hideto Kakihara, Higashiyamato, JP;
Kenichi Hiratsuka, Urawa, JP;
Yoji Shibata, Yokohama, JP;
Wataru Kosuge, Yokohama, JP;
Nippon Telegraph and Telephone Public Corporation, both of, JP;
Hitachi, Ltd., both of, JP;
Abstract
A center-to-end type information service system utilizing the public telephone networks that are fundamental communication media of nation-wide scale is disclosed in which desired information is requested from the terminal side to the center by means of a telephone set or simplified keyboard and then delivered to and received by a TV receiver. A part of the center functions is transferred together with the exchange function to a subcenter located near the terminal. Thus, the length of transmission path connecting the center to terminals becomes shorter and the cost of the whole system can be cut down.