Character signal processing apparatus and character signal proce

Details Character signal processing apparatus and character signal proce Character signal processing apparatus and character signal proce

1997-02-28

1999-11-02

Harvey, David E.

Television

Nonpictorial data packet in television format

Including teletext decoder or display

348552, 348725, 34082526, H04N 708

Patent

active

059780363

ABSTRACT:
A personal computer receives a teletext signal. A television broadcast signal received by a TV tuner unit is converted to a composite video signal and a voice signal and are then supplied to a personal computer card. The personal computer card extracts character data with a character data extracting circuit when the input composite video signal is a teletext signal and converts such character data to the code data and supplies the code data to the personal computer for display on a liquid crystal display. Moreover, when the composite video signal is a television broadcast signal, it is converted to a digital signal with a video decoder and is then supplied to the personal computer for output to the liquid crystal display.

REFERENCES:
patent: 3848082 (1974-11-01), Summers
patent: 4517598 (1985-05-01), Van Valkenburg et al.
patent: 5359367 (1994-10-01), Stockill
Hedger, John, "Broadcast Telesoftware: Experience with Oracle", 1980 by Online conference Ltd.
Givertz, M.J. "Practical Implementation Of an Information Provision Service Using Teletext", Conference on Electronic Delivery of Data and Software, The Cavendish Conference Centre, London, Sep. 16-17, 1986.

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