Bipolar time modulated encoder/decoder system

Details Bipolar time modulated encoder/decoder system Bipolar time modulated encoder/decoder system

1983-09-01

1985-03-05

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

375 55, 360 40, G11B 509, H04L 2710

Patent

active

045034729

ABSTRACT:
An encoder/decoder is described which allows data transmission on an A.C. coupled transmission system. The encoder converts a serial data stream comprised of combinations of logical "1"'s and "0"'s in an NRZ format to an output pulse train. The latter is characterized not only by phase reversal for each bit of data, as required for A.C. coupled systems, but by bit durations which are dissimilar for a logic "1" and "0". The encoded data is transmitted and subsequently applied to the decoder which restores the data to an NRZ format, and provides a corresponding series of clock pulses for interpreting the data. The encoder/decoder may be implemented in a simple logic configuration.

REFERENCES:
patent: 4287596 (1981-09-01), Chari
patent: 4441193 (1984-04-01), Bell

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