초록 ▼

A data access system comprises a plurality of intelligent terminals capable of selectively receiving data from a data bank by means of barge-in telephone lines. Each terminal includes a basic terminal into which application modules and device control modules may be plugged. The application modules c

A data access system comprises a plurality of intelligent terminals capable of selectively receiving data from a data bank by means of barge-in telephone lines. Each terminal includes a basic terminal into which application modules and device control modules may be plugged. The application modules contain programs enabling the computer to perform specified functions in conjunction with certain stored subroutines within the basic terminal. A device control module enables communication by telephone with the data bank. A terminal subscribes to the data bank by transferring selectively subscription data to memory within the terminal. In one embodiment, subscription data identifying by serial numbers the terminals which are to become subscribers is circulated on subscription barge-in telephone lines. If a terminal calls a subscription line on which there appears the serial number for that terminal, the subscription data for that terminal is permanently stored within the application module of the terminal. The text data to which the terminal has subscribed is retrieved from the data bank by calling a barge-in telephone line (on which such data is circulated) if the stored subscription data shows that the subscription is in effect.

대표청구항 ▼

A data retrieval system for enabling subscribers to retrieve and display selected text data, comprising in combination a data bank, a plurality of text barge-in telephone lines on which text data from said data bank is circulated, said text data including text identifying signals, a subscription bar

A data retrieval system for enabling subscribers to retrieve and display selected text data, comprising in combination a data bank, a plurality of text barge-in telephone lines on which text data from said data bank is circulated, said text data including text identifying signals, a subscription barge-in telephone line on which subscription data for a multiplicity of subscribers is circulated, said subscription data identifying subscriber terminals which have subscribed to the text data and the text data to which they have subscribed, and a multiplicity of subscriber terminals, each of which includes data processor means, memory means and display means, said data processor means under control of instructions stored in said memory means determining the information to be displayed by said display means, each one of said subscriber terminals further including means for transferring subscription data for said one subscriber terminal only from said subscription barge-in telephone line to a first portion of said memory means, means for comparing selected text identifying signals on at least one of said text barge-in telephone lines and said subscription data; and means for selectively causing the text data on said one text barge-in telephone line to be displayed when said means for comparing indicates that said one subscriber terminal has subscribed thereto.