Teletext and videotex processing system and method

Details Teletext and videotex processing system and method Teletext and videotex processing system and method

1994-07-25

1996-10-22

Kuntz, Curtis

Television

Two-way video and voice communication

User positioning

H04N 714

Patent

active

055681824

ABSTRACT:
A teletex and videotex processing system permits concurrent processing of broadcast teletext (TTX) transmitted through a wireless network and a videotex transmitted through a telephone network. The processing system includes a central processing unit (CPU), a TTX pre-processing circuit, a memory and graphic display control circuit, an address extension and control signal generator, a keyboard interface circuit, and a modulator and demodulator (MODEM) interface circuit and an associated keyboard and modem. Interrupt processing by the CPU permits compact construction. A corresponding method is also described.

REFERENCES:
patent: 4805134 (1989-02-01), Calo et al.
patent: 5093902 (1992-03-01), Tokumitsu
patent: 5218708 (1993-06-01), Kanbayashi et al.

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