Data word start detector

Details Data word start detector Data word start detector

1975-05-19

1976-12-07

Heyman, John S.

328129, 328 55, 328 72, 328 58, H03K 520

Patent

active

039965236

ABSTRACT:
In the disclosed detector, data is passed into two channels. In one channel successive interword pulses are gated out and the resulting pulses stretched at least one-half pulse width. In the second channel pulses representing the entire data word stretched so that the interword pulses overlap. After the data words are suitably synchronized to equalize the stretching delays, an exclusive OR gate compares the channel outputs to produce a step representing the interword interval. The step opens a counter which counts a predetermined number of clock pulses to define the beginning of the next word. A delay at the beginning of the channels eliminates any lead between the data and the corresponding clock pulses.

REFERENCES:
patent: 3310751 (1967-03-01), Atzenbeck
patent: 3505594 (1970-04-01), Tarczy-Hornoch et al.
patent: 3579126 (1971-05-01), Paul
patent: 3611159 (1971-10-01), Florsheim et al.

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