対話型通信システム

Japanese Patent JP4220587

B2

An interactive communication system comprises a central controller (1); and at least one remote unit (9) connected in use to a display device (12), the central controller (1) generating signals in accordance with a service function, access to all or part of which is restricted. The signals are supplied to the remote unit(s) (9) for display on the display device (12). The or each remote unit (9) includes a processor (14), responsive to signals from the central controller (1), and selectively connectable to the central controller to transmit information back to the central controller. The or each remote unit (9) further comprises an input device (16) and a control memory (17) connected to the processor (14), the input device (16) allowing a user to enter information, and the control memory (17) storing access control data. The processor (14) is responsive to the access control data to allow a user to gain access to the restricted part of the service function, and periodically supplies data to the central controller (1) related to said access. The central controller (1) can generate signals which are supplied to the remote unit(s) (9) to modify the access control data. The processor (14) is adapted to modify the access control data in the control memory (17) to allow additional access, independently of the central controller (1).

Matthew Edward Tims
David Robert Weston
Richard Andrew Kid

JP2493698A

February 04, 2009

February 05, 1998

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TWO WAY MEDIA LIMITED

H04H60/21; A63F13/06; H04M11/00; H04M11/08; H04N7/173; H04N7/16

JP7007728A
JP7059073A
JP8149026A
JP8256071A
JP8186549A
JP9511106A
JP3179596A

NHK・SIM-TVグループ,インタラクティヴTV,株式会社工業調査会,1994年 5月 7日,第1版,p.137-144

Takeshi Hattori

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