The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 10, 2001

Filed:

Oct. 26, 1998
Applicant:
Inventor:

Chun-Sup Kim, Suwon, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 ;
U.S. Cl.
CPC ...
G11B 7/00 ;
Abstract

A high speed optical disc reproducing device includes: a gain amplifier for amplifying data picked-up from an optical disc, with a specific amplification gain and a frequency and boost control unit for outputting a frequency and boost gain control signal under the control of a main control unit in accordance with the kind of pick-up and disc used in the reproducing device. The device also includes a boost filter, which serves the functions of boosting high frequency parts of the output signal of the gain amplifier according to the frequency and boost gain control signal, and a uniform group-delaying section which group-delays all of the frequency areas of the output signal. The device minimizes the signal distortion, caused by the difference in the pick-up and disc characteristics of a high speed optical disc reproducing device.


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