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:
Jan. 30, 2007

Filed:

Jun. 07, 2004
Applicants:

Tatsuhiro Otsuka, Suwon, KR;

Seong-sin Joo, Suwon, KR;

Chong-sam Chung, Seongnam, KR;

Young-man Ahn, Suwon, KR;

In-sik Park, Suwon, KR;

Hea-jung Suh, Seongnam, KR;

Byung-in MA, Suwon, KR;

Byoung-ho Choi, Suwon, KR;

Inventors:

Tatsuhiro Otsuka, Suwon, KR;

Seong-sin Joo, Suwon, KR;

Chong-sam Chung, Seongnam, KR;

Young-man Ahn, Suwon, KR;

In-sik Park, Suwon, KR;

Hea-jung Suh, Seongnam, KR;

Byung-in Ma, Suwon, KR;

Byoung-ho Choi, Suwon, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method of and a circuit for providing a playback signal, which is compensated for time delay, from a photodetector having a plurality of outputs. A time difference between a first signal corresponding to a part of the outputs of the photodetector and a second signal corresponding to another part of the outputs of the photodetector is detected and one of the first and second signals is temporally shifted to compensate for a time delay between different outputs of the photodetector. The temporally shifted signal is summed with the other signal to provide a playback signal. Accordingly, the time delay between the outputs of the photodetector is compensated, thereby increasing the degree of modulation of the data playback signal. In addition, distortion or degradation of the signal is suppressed and occurrence of errors in the playback signal is minimized, thereby improving the reliability of the playback signal.


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