Videotex frame processing

Details Videotex frame processing Videotex frame processing

1985-04-04

1988-06-14

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 100

Patent

active

047516690

ABSTRACT:
A videotex decoder apparatus which, in various aspects, displays a status line to indicate when connect charges are occurring; overlays menus over displayed videotex frames with portions of the displayed frames remaining visible; provides easily called log-on procedures; retrieves remote information frames by user-specified keywords names; prints information frames in selectable different overall sizes; provides selectable different character sets for display; is table-driven; is structured to include a device independent decoder and device dependent drivers; includes a controller which feeds bytes to the decoder for decoding without regard to the protocol-dependent information content of those bytes; and uses an added frame header on stored frames to indicate the videotex protocol for decoding the frames.

REFERENCES:
patent: 4028733 (1977-06-01), Ulicki
patent: 4290062 (1981-09-01), Marti et al.
patent: 4454593 (1984-06-01), Fleming et al.
patent: 4587520 (1986-05-01), Astle
Williams; The Lisa Computer System, Byte; Feb. 1983, pp. 33-44, 46, 48 and 50.

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