| 摘要 |
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.
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