PARALLEL WAVEFORM EQUALIZER

PURPOSE:To obtain a parallel waveform equalizer capable of reducing processing time required for waveform equalization processing in an equalizer which performs the adaptive equalization of waveform distortion such as a ghost, etc. CONSTITUTION:A distorted input signal 1 is separated to four FIFOs....

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Bibliographic Details
Main Authors ROBAATO HOO, FURUYASU KAZUO
Format Patent
LanguageEnglish
Published 24.06.1994
Edition5
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
PICTORIAL COMMUNICATION, e.g. TELEVISION
RESONATORS
TRANSMISSION
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Summary:PURPOSE:To obtain a parallel waveform equalizer capable of reducing processing time required for waveform equalization processing in an equalizer which performs the adaptive equalization of waveform distortion such as a ghost, etc. CONSTITUTION:A distorted input signal 1 is separated to four FIFOs. The output of the FIFOs are subtracted by the contents of ROMs 9-12, and error signals are outputted to RAMs 25-28. The error signals are compared at comparators 21-24, and an error is detected when a sample with a value other than zero exists. and delay quantity is activated. When only the sample with a value zero exists, the comparators 21-24 activates a ROM 48 provided with already decided delay quantity and from which a single weight impulse is outputted. RAMs 33-36 are memory to change a weight coefficient decided by multiplying a floating point constant from a ROM 47 at the RAMs 25-28, which effectively reduce the ghost.
Bibliography:Application Number: JP19920331526