Communications: electrical – Continuously variable indicating – With meter reading
Patent
1993-02-18
1995-05-09
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082524, 348706, H04Q 100
Patent
active
054144175
ABSTRACT:
An automatic input/output terminal varying circuit comprising an input/output terminal section including a plurality of input/output terminals for inputting signals from external signal sources and outputting signals to external systems, an input signal selection section for selecting one of the signals inputted through the input/output terminal section and a television signal in response to select data from a microcomputer and outputting the selected signal to a signal processor, and a plurality of output signal selection section for outputting the selected signal from the input signal selection section to ones of the input/output terminals of the input/output terminal section other than one of the input/output terminals of the input/output terminal section through which the selected signal is inputted, in response to the select data from the microcomputer. Therefore, according to the invention, the terminals not used as input terminals can be used for the output function and the terminals not used as output terminals can be used for the input function. This has the effect of reducing the number of the terminals as compared with the prior art where the terminals are specified as input or output dedicated terminals.
REFERENCES:
patent: 3840702 (1974-10-01), Woods
patent: 4502026 (1985-02-01), Imazeki et al.
patent: 4763012 (1988-08-01), Blankinship
patent: 4808992 (1989-02-01), Beyers, Jr. et al.
patent: 4903129 (1990-02-01), Bell et al.
patent: 4949179 (1990-08-01), Hosono
Gold Star Co. Ltd.
Holloway III Edwin C.
Yusko Donald J.
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