Method and device for evaluating the safety margin of a digital

Details Method and device for evaluating the safety margin of a digital Method and device for evaluating the safety margin of a digital

1989-06-21

1991-01-15

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 201, 371 28, 358139, H04B 346, H04N 1200

Patent

active

049859013

ABSTRACT:
A method and a device are provided for giving an indication on the safety margin offered by a digital video signal circulating on a parallel digital video interface in parallel with a clock signal. For that purpose, the process includes: (a) decoding the data signals with the clock signal in unaltered form; (b) decoding the data signals with the clock signal after a predetermined time shift has been introduced between them; (c) comparing data words obtained from the decoding steps (a) and (b); and (d) repeating steps (a)-(c) with a plurality of successive shifts and determining the minimum amount of shift which results in significant differences between the data words decoded with and without time shift.

REFERENCES:
patent: 4887279 (1989-12-01), Odenheimer

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