Title:
ERROR SIGNAL DETECTOR FOR OPTICAL RECORDING AND REPRODUCING EQUIPMENT
Document Type and Number:
Japanese Patent JP3748783
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an error signal detector for an optical recording/ reproducing equipment furnished with a photodetector for receiving the light reflected/diffracted from a recording medium and a signal processing part for detecting the error signal by calculating a detection signal of the photodetector.
SOLUTION: The photodetector is provided with plural light receiving areas to independently receive the light of optical areas for each other, where the change of the beam profile due to the tangential slope of the recording medium is oppositely effected each other, and the signal processing part is provided so as to detect the error signal of the tangential slope from the detection signals of the plural light receiving areas.
Inventors:
Ma tiger
Chung Kanezo
Park Jinju
Choi Hiroshi
Typhoon
Chung Kanezo
Park Jinju
Choi Hiroshi
Typhoon
Application Number:
JP2001076979A
Publication Date:
February 22, 2006
Filing Date:
March 16, 2001
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G11B7/095; G11B7/007; G11B20/18; G11B7/09; G11B7/13; G11B7/131; (IPC1-7): G11B7/095
Domestic Patent References:
| JP200057608A |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro