System for detecting and recovering a transmitted signal

Details System for detecting and recovering a transmitted signal System for detecting and recovering a transmitted signal

1983-07-22

1986-08-12

Orsino, Jr., Joseph A.

Pulse or digital communications

Repeaters

Testing

375 82, 375 95, H03D 318

Patent

active

046060502

ABSTRACT:
What is disclosed is a system for recovering encoded data from a transmitted signal. A clock regenerating circuit regenerates a clock signal from the data bits encoded in the signal. The regenerated clock signal is used to synchronize an up/down with each individual data bit. When a data bit is at a logic "H", the counter counts from a predetermined value in an upward direction and when the data bit is at a logic "L", the counter counts in a downward direction from a predetermined value. The count after each bit-time is used to provide a signal representative of the logic state of that data bit. Accordingly, a reproduced data signal can be accurately obtained.

REFERENCES:
patent: 3656064 (1972-04-01), Giles et al.
patent: 4302845 (1981-11-01), McClaughry et al.
patent: 4346452 (1982-08-01), Groves
Fuller et al., "Overview of an A.M.P.S. Mobile Call Processing System", 30th Annual IEEE Vehicular Technology Science Conference, Sep. 15-17, 1980.
Norton, "Drop Your Costs, But Not Your Bits With a Manchester-Data Decoder", Electronic Design, vol. 27, No. 15, Jul. 19, 1979.

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