Three-to-two level digital signal conversions and vice versa

Details Three-to-two level digital signal conversions and vice versa Three-to-two level digital signal conversions and vice versa

1983-07-18

1986-01-28

Bookbinder, Marc E.

Pulse or digital communications

Repeaters

Testing

34082563, 328111, H03K 1302

Patent

active

045676011

ABSTRACT:
A three level signal is converted to a two level signal for transmission through a bi-level digital device by separating the opposite polarity parts of the three level signal. One part is inverted at an inverter and devices such as monostables are used to form two pulse trains in which the pulse lengths are different. The pulse trains are combined at a mixer and then transmitted through the device. Also disclosed is a decoder for decoding the pulses after transmission through the device.

REFERENCES:
patent: 3181075 (1965-04-01), Klass
patent: 3855419 (1974-12-01), Hurford
patent: 4014002 (1977-03-01), Tucker
patent: 4178549 (1979-12-01), Ledenbach et al.
patent: 4327441 (1982-04-01), Bradshaw
patent: 4428007 (1984-01-01), Tanaka et al.
patent: 4429384 (1984-01-01), Kaplinsky
Electronic Design, vol. 25, No. 8, Apr. 1977, p. 146, Rochelle Park, USA R. Stetson: "Consider Pulse-Width Modulation for Transmitting Data by Cable" p. 146, Left-Hand Column, Line 7-Right Hand Column, Last Line.

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