Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-02-01
1989-02-07
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358146, H04N 704
Patent
active
048035513
ABSTRACT:
A compact module for receiving teletext data contained in a composite video signal is usable with a personal computer or a videotex decoder system. The module includes a data selector for separating teletext data from the video signal, a receiver for checking data transmission errors and comparing the addresses of received data with preselected addresses of specific data requested by a user. The module also includes a cental processing unit for processing the data produced by the receiver, which is then transmitted to the personal computer or videotex system through an input/output interface, to be displayed.
REFERENCES:
patent: 4161728 (1979-07-01), Insam
patent: 4380027 (1983-04-01), Leventer et al.
"Microprocessor Smartens Teletext", Electronics, Sep. 1978, vol. 51, No. 20, p. 74.
Fedida et al., "Viewdata", Wireless World, May 1977, vol. 83, No. 1497, pp. 55-59.
Insam et al., "An Integrated Teletext and Viewdata Receiver", The SERT Journal, vol. 11 #9, 10/77, pp. 209-214.
Clarke, "The Application of Picture Coding Techniques to Viewdata", IEEE Transactions of Consumer Electronics, vol. CE-26, 8/50 568-577.
"Asynchronous Data Transmission System Series 2100 Vidata", Technical Data Sheet, Wegener Communications Inc., 1/83.
Gold Star Co. Ltd.
Groody James J.
Harvey David E.
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