Apparatus and method for generating an envelope for data signals

Details Apparatus and method for generating an envelope for data signals Apparatus and method for generating an envelope for data signals

1998-10-14

2000-07-11

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 63, 327 52, H03K 5153

Patent

active

060878606

ABSTRACT:
A CMOS device for generating a waveformn envelope is provided in a network that uses a twisted pair medium, such as a telephone line, to connect stations. The CMOS device receives analog signals representing pulsed data signals sent over the telephone line and generates an envelope waveform for the received analog signal. The envelope waveform can then be used to detect the arrival of data, as opposed to noise on the network.

REFERENCES:
patent: 4392406 (1983-07-01), Fritz
patent: 4737866 (1988-04-01), Ebata
patent: 4879558 (1989-11-01), Swanson
patent: 5629641 (1997-05-01), Cheng
patent: 5633893 (1997-05-01), Lampe et al.
patent: 5696790 (1997-12-01), Graham et al.
patent: 5739780 (1998-04-01), Cheng et al.

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