Multi-function data signal processing method and apparatus

Details Multi-function data signal processing method and apparatus Multi-function data signal processing method and apparatus

H - Electricity

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H03M 1/12 (2006.01) G11B 20/10 (2006.01) G11B 20/14 (2006.01) H03M 5/02 (2006.01) H03M 7/50 (2006.01) H04L 25/49 (2006.01)

Patent

CA 1226067

- 1 - MULTI-FUNCTION DATA SIGNAL PROCESSING METHOD AND APPARATUS Abstract A data signal is processed to change its form and spectral content without introducing undesirable frequency and amplitude effects. Multiple data signal states, which determine the essential characteristics of the output signal wave configuration, are utilized in conjunction with clock signals at a rate substantially in excess of twice the largest frequency component of the data signal in order to read from a memory a bit-duration waveform sample set representing the desired output signal wave configuration. Predistortion to compensate for anticipated transmission effect is also included in that configuration. In one embodiment, an input data signal is in an NRZ format and is processed for conversion to the biphase, or Manchester, format by a ROM table look-up function addressed jointly by the input signal states and the clock signals.

455564

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