Adaptive equalizer for use in information reproducing apparatus

Details Adaptive equalizer for use in information reproducing apparatus Adaptive equalizer for use in information reproducing apparatus

2006-04-25

2006-04-25

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Equalizers

C375S240020, C375S262000, C375S265000, C375S341000, C369S059220

Reexamination Certificate

active

07035327

ABSTRACT:
Hold registers receive a hold register enable signal. When reading one kind signal of header field data, the hold register enable signal is High and the registers store newly renewed values of filter coefficients, and when reading a different kind signal of recording field data, the hold register enable signal is Low and the hold registers hold the last stored header field contents of the registers. Then, when a header field of a next sector is detected, the contents held in the hold registers are taken and preset to the registers. Thus, even in a case where an intermittent reproduction signal having different kinds of formats is processed in playback, the continuous adaptive equalization can be realized over the different kinds of reproduction signals in quality.

REFERENCES:
patent: 4458362 (1984-07-01), Berkovitz et al.
patent: 5070514 (1991-12-01), Tjahjadi
patent: 5381357 (1995-01-01), Wedgwood et al.
patent: 5414571 (1995-05-01), Matsushige et al.
patent: 5432818 (1995-07-01), Lou
patent: 5434883 (1995-07-01), Kimoto et al.
patent: 5444682 (1995-08-01), Yamada et al.
patent: 5537438 (1996-07-01), Mourot et al.
patent: 5608715 (1997-03-01), Yokogawa et al.
patent: 5646957 (1997-07-01), Im et al.
patent: 5712873 (1998-01-01), Shiue et al.
patent: 5870372 (1999-02-01), Kuribayashi
patent: 5938789 (1999-08-01), Itoi
patent: 6021161 (2000-02-01), Yamaguchi et al.
patent: 6055119 (2000-04-01), Lee
patent: 6055268 (2000-04-01), Timm et al.
patent: 6064536 (2000-05-01), Ebisawa et al.
patent: 6124997 (2000-09-01), Hirasaka
patent: 6134538 (2000-10-01), Mager et al.
patent: 6246723 (2001-06-01), Bliss et al.
patent: 6418228 (2002-07-01), Terai et al.
patent: 6426946 (2002-07-01), Takagi et al.
patent: 6449349 (2002-09-01), Higuchi
patent: 6493165 (2002-12-01), Satoh et al.
patent: 6496316 (2002-12-01), Hori et al.
patent: 6519715 (2003-02-01), Takashi et al.
patent: 805448 (1997-11-01), None
patent: 9-320198 (1997-12-01), None
“Introduction to Adaptive Filters”, Simon Haykin, MacMillan Publishing Co., 1994.

Affiliated with

Also associated with

Rating

Adaptive equalizer for use in information reproducing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive equalizer for use in information reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive equalizer for use in information reproducing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3572500