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Patent Searching and Data


Title:
SUBSCRIBER PERSONAL MESSAGE SYSTEM FOR CATV
Document Type and Number:
Japanese Patent JPH0685771
Kind Code:
A
Abstract:

PURPOSE: To allow only a relevant subscriber terminal equipment to. select an outgoing channel and to view a message by sending the message such as a video image, a voice signal or a character from a center side to the outgoing channel exclusively for the message with respect to the specific subscriber.

CONSTITUTION: The subscriber personal message system in the CATV is provided with a message source 1 from which a message signal (x) is transmitted, a center controller 2 transmitting a control signal (y) such as a text used to define a message channel or with a subscriber or the like being a message notice difference added thereto and a multiplexer 3 multiplexing the message signal (x) and the control signal (y) and transmitting the multiplexed signal to a transmission line α, and also with subscriber terminal equipments 4-1-4-m receiving the message signal (x) and the control signal (y) from the transmission line α and selecting a message channel or the like in response to the control signal (y), and television receivers 5-1-5-n connecting to the subscriber terminal equipments 4-1-4-m to monitor the message or the like.


Inventors:
HASEGAWA YOSHIKO
TOYOMARU TADASHI
Application Number:
JP23445292A
Publication Date:
March 25, 1994
Filing Date:
September 02, 1992
Export Citation:
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Assignee:
NEC CORP
NIPPON DENKI TELECOM SYST
International Classes:
H04H20/76; H04H60/13; H04H60/15; H04N21/235; H04N21/236; H04N21/435; H04N21/438; (IPC1-7): H04H1/02; H04N7/173
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)