Pulse or digital communications – Repeaters – Testing
Patent
1976-06-30
1980-04-22
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
H03K 1322
Patent
active
041997220
ABSTRACT:
A delta modulation system with an encoder for encoding successive samples of an analog signal during successive sample intervals into a digital status change code signal indicating the difference between a sample and an estimate of the sample as one of three states: increasing, decreasing or unchanged in status. The status change code signal is transmitted to a decoder which reconstructs the analog signal from the digital status change signal. The status change code signal is also used in the encoder to estimate the next sample of the analog signal.
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"Digital Pitch Detector Using Delta Modulator and Limited-Length Bit-Pattern Generator", Frei et al., IBM Tech. Disc. Bulletin, vol. 16, #4, pp. 1650-1651, Sep. 1973.
Manning John R.
Marnock Marvin J.
Masinick Michael A.
Matthews Marvin F.
Safourek Benedict V.
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