Data processor

Details Data processor Data processor

1991-05-17

1992-09-01

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

307525, 34082548, 379283, 379386, H04J 312

Patent

active

051446260

ABSTRACT:
A data processor comprises a multifrequency receiver formed together with a central processor on a semiconductor substrate. The multifrequency receiver produces digital data for identifying a tone wave included in a multifrequency analog signal or produces an identification result in accordance with the condition of signal issued by the central processor. The multifrequency receiver is thereby operative to deal with tone waves which are flexible in type and input analog signals which are flexible in their frequency band, and has increased latitude of choice for the operational characteristics and function such as the number of sampling periods of input analog signals and the discrimination accuracy.

REFERENCES:
patent: 4016370 (1977-04-01), Laoteppitaks et al.
patent: 4354248 (1982-10-01), Conger et al.
LSI Handbook, Ohm, p. 629 (Nov. 30, 1984).

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