Digital testing apparatus

Details Digital testing apparatus Digital testing apparatus

1978-05-09

1980-05-20

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358147, 455 67, H04N 500, H04N 962

Patent

active

042042283

ABSTRACT:
Apparatus is disclosed for producing a test signal having a predetermined amount of distortion, including a first pulse generator (11) for producing a plurality of first pulses, a distortion pulse generator (18, 21) for producing a plurality of distortion pulses, and an adder circuit for adding the first and distortion pulses to produce a composite signal having a main portion of amplitude and shape identical to the first pulse and to which is added at least one of the distortion pulses.

REFERENCES:
patent: 4109100 (1978-08-01), Unkauf

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