Method and apparatus for representing analog waveforms in digita

Details Method and apparatus for representing analog waveforms in digita Method and apparatus for representing analog waveforms in digita

1997-12-24

2000-02-01

Tokar, Michael

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341158, H03M 112, H03M 134

Patent

active

060208406

ABSTRACT:
A method and apparatus for converting an analog waveform into digital messages and for reconstructing the analog waveform from the information contained in the digital messages. The digital messages describe a change in amplitude of the analog waveform, the polarity or direction of the change in amplitude and the elapsed time for the change in amplitude. Each digital message is created upon the occurrence of a change in amplitude which exceeds a predetermined or predefined threshold voltage. The digital messages may in some instances be combined to compress or lessen the total number of digital messages necessary to reconstruct the analog wave. Using the information in the digital messages, the analog waveform can be reconstructed without the use of smoothing filters.

REFERENCES:
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patent: 4370643 (1983-01-01), Kitamura
patent: 4680797 (1987-07-01), Benke
patent: 4763207 (1988-08-01), Podalak et al.
patent: 5157727 (1992-10-01), Schloss
patent: 5204833 (1993-04-01), Aoki

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