Teletext decoder arrangement

Details Teletext decoder arrangement Teletext decoder arrangement

1991-11-19

1993-05-04

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358142, H04N 704, H04N 708

Patent

active

052086712

ABSTRACT:
A teletext decoder arrangement comprises a page memory (PM) operable under the control of a data acquisition circuit (DAC) for storing a teletext page to be displayed, and a background memory (BM) in which teletext data packets are stored in the order in which they are received, a scanning circuit (SC) being provided which, when a teletext page is requested, causes the data packets in the background memory (BM) to be scanned in the B reverse order to that in which they were received to locate the most recently received version of the required teletext page, and to cause the data packets of the required page to be output to the data acquisition circuit (DAC) in the order in which they were received for storage in the page memory (PM) and subsequent display.

REFERENCES:
patent: 4679083 (1987-07-01), Schmitz et al.
patent: 4701794 (1987-10-01), Froling et al.
patent: 4931870 (1990-06-01), den Hollander
patent: 4991018 (1991-02-01), Davis
patent: 5038212 (1991-08-01), Van Den Hombeyh et al.

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