Dynamic digital equalizer

Details Dynamic digital equalizer Dynamic digital equalizer

1984-10-25

1986-05-20

Boobkinder, Marc E.

Pulse or digital communications

Repeaters

Testing

333 18, 328175, 375 12, H04B 110

Patent

active

045906009

ABSTRACT:
A level comparator is used to check the incoming message header pulse amplitude and if it is of a level higher than an established level a signal is transmitted to update a digital counter whose digital output is converted by a digital to analog converter to establish an increased analog reference level. If the incoming message header is lower the counter is decremented to establish a lower reference level. Then the levels of any signals present at fixed intervals after the header or sync pulse are measured and recorded. These measured levels constitute the value of correction required for subsequent pulses and are added to or subtracted from following data pulses as required.

REFERENCES:
patent: 3621139 (1971-11-01), Gibson
patent: 4012628 (1977-03-01), Gersho
patent: 4250472 (1981-02-01), Hashimoto
patent: 4352193 (1982-09-01), Acker

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