Apparatus for storing data broadcast in digital form for generat

Details Apparatus for storing data broadcast in digital form for generat Apparatus for storing data broadcast in digital form for generat

1975-09-02

1977-04-05

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 9, 358127, H04N 576

Patent

active

040163610

ABSTRACT:
Apparatus for use in conjunction with a television broadcast receiver for storing, in a main memory, digital data transmitted during portions of the transmitted video signals not used for picture signal content. The digital data is extracted at the receiver at a high data rate and stored in the main memory. The stored data may be used, under viewer control, to generate a character display on the display tube of the receiver. Alternatively, the data content of the main store may be written into a first buffer store from which data is read out at a slow rate and stored by a low frequency signal recorder. Data signals may subsequently be read out from that recorder (or from a separate recorder on which suitable data signals have independently been recorded) into a second buffer store from which they are inputted at a high data rate into the main memory for generation of a display. By use of such apparatus, information represented by the received digital data may be accumulated in the main memory for viewer-controlled display or recorded by a low frequency recorder for retention and subsequent replay. Additionally, information from other sources suitably recorded on a low frequency recorder may be entered into the main memory for display by the receiver.

REFERENCES:
patent: 3493674 (1970-02-01), Houghton
patent: 3891792 (1975-06-01), Kimura
patent: 3909512 (1975-09-01), Omori et al.
patent: 3927250 (1975-12-01), Rainger

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