Playback apparatus and adaptive equalizing circuit with a...

Details Playback apparatus and adaptive equalizing circuit with a... Playback apparatus and adaptive equalizing circuit with a...

2007-02-06

2007-02-06

Tran, Thai Q. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C360S065000, C375S229000, C375S230000, C375S232000, C375S233000

Reexamination Certificate

active

09849856

ABSTRACT:
An equalizing circuit is provided for a playback apparatus not requiring tracking control. A playback signal is supplied to a plurality of unit delay devices which are connected in series, and the signals at the input ends and the output ends are supplied to weighting devices, respectively. Furthermore, the playback signal is supplied to a computation circuit, whereby weighting coefficients are determined. Weighting is performed on the signals from unit delay devices, and these signals are added together by an adder so that the equalization of the playback signal is performed, and the signal is extracted from an output terminal. Simultaneously, in the computation circuit, when the envelope value of the playback signal is within a range the phase lock for the playback signal is used so that the calculation of the weighting coefficients is done, and the coefficients of the weighting devices are changed.

REFERENCES:
patent: 5450253 (1995-09-01), Seki et al.
patent: 5663844 (1997-09-01), Gohda et al.
patent: 5805637 (1998-09-01), Hirosaka et al.
patent: 5835666 (1998-11-01), Gohda et al.
patent: 6307822 (2001-10-01), Shim et al.
patent: 6621863 (2003-09-01), Ido
patent: 2 320 866 (1998-07-01), None

Affiliated with

Also associated with

Rating

Playback apparatus and adaptive equalizing circuit with a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Playback apparatus and adaptive equalizing circuit with a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Playback apparatus and adaptive equalizing circuit with a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3827433