H - Electricity – 04 – M
Patent
H - Electricity
04
M
363/16, 350/33,
H04M 11/06 (2006.01) H04M 11/08 (2006.01) H04N 7/173 (2006.01)
Patent
CA 1112380
ABSTRACT OF THE DISCLOSURE 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.
317198
Hiratsuka Kenichi
Kakihara Hideto
Kosuge Wataru
Shibata Yoji
Gowling Lafleur Henderson Llp
Hitachi Ltd.
Nippon Telegraph And Telephone Public Corporation
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