One way data transmission system

Details One way data transmission system One way data transmission system

1976-06-03

1977-11-15

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358114, 358115, 358117, 340149A, H04N 132, H04N 134, H04N 144

Patent

active

040588300

ABSTRACT:
There is provided a one-way data transmission system wherein a transmitter station transmits in the form of data packs data from a plurality of channels, the said packs being time multiplexed.
One channel amongst the plurality of channels is allotted to transmitting date information. In the receiver equipments, the dead memory stores not only the channel code, but also a subscription period information which permits to validate the channel code depending on the date information received from the date channel. Automatic dead-memory distributors are provided which receive data from a control channel transmitted by the system, like other channels. The system is compatible with television systems.

REFERENCES:
patent: 2977434 (1961-03-01), Shanahan
patent: 3736369 (1973-05-01), Vogelman
patent: 3736388 (1973-05-01), Vogelman
patent: 3890461 (1975-06-01), Vogelman

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