Equalizer for digital video disk player

Details Equalizer for digital video disk player Equalizer for digital video disk player

1998-01-22

2000-11-28

Tran, Thai

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

360 65, H04N 576

Patent

active

06154602&

ABSTRACT:
An equalizer for a digital video disk player which is capable of obtaining a 5-tap transversal filter effect by providing a 3-tap transversal filter, reducing the number of elements, and obtaining a reliable 5-tap frequency characteristic. The equalizer includes first through third buffers for preventing a jittering problem of an RF signal due to a delay time, a 2T delay unit for 2T-delaying an output signal from the first buffer, a 4T delay unit for 4T-delaying an output signal from the third buffer, a summing unit for summing output signals from the first and third buffers with an output signal from the second buffer, and a low pass filter for allowing the summed output signals from the summing unit to have an equalizer characteristic suggested in the DVDP specification.

REFERENCES:
patent: 5786951 (1998-07-01), Welland et al.
patent: 5818655 (1998-10-01), Satoh et al.
patent: 5886844 (1999-03-01), Shimizu
patent: 5946154 (1999-08-01), Ino

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