Data slicing apparatus and method

Details Data slicing apparatus and method Data slicing apparatus and method

1976-12-06

1978-09-19

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358138, H04N 521

Patent

active

041158113

ABSTRACT:
A data slicer including detector means connected to a signal input for detecting the presence of data clock pulses on an incoming signal. Generator means are connected to the detector means for generating a sampling pulse during the time that the presence of the data clock pulses is detected. Filter or delay means are connected to the signal input for establishing the mean level of the incoming clock pulses. Sampler means are connected to the filter or delay means for sampling the mean incoming signal level when established by the filter or delay means during the sampling pulse interval and for storing the sampled signal. Comparator means having a first input are connected to the signal input and a second input connected to the sampler means for receiving and comparing the incoming signal with the sampled signal stored in the sampler means to effect slicing of the data from the incoming signal. As any distortion present on the incoming signal will affect the clock pulses and data equally, by selecting a slicing level determined from the clock pulses, the optimum level for slicing the subsequent data is established.

REFERENCES:
patent: 3472958 (1969-10-01), Estock
patent: 3982065 (1976-09-01), Barnaby et al.

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