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Tilt controller based on distortion-free control signals and an optical reproducing apparatus thereof

A control signal, tilt control technology, applied in the modification of read/write signal, optical recording/reproduction, digital recording/reproduction, etc., can solve the problem of inability to read, inaccurately read data, Inaccurate tilt adjustment of actuator 30, etc.

Inactive Publication Date: 2006-11-22
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the tilt adjustment of the actuator 30 becomes inaccurate, so that the data recorded on the optical disc cannot be read or read inaccurately.

Method used

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  • Tilt controller based on distortion-free control signals and an optical reproducing apparatus thereof
  • Tilt controller based on distortion-free control signals and an optical reproducing apparatus thereof
  • Tilt controller based on distortion-free control signals and an optical reproducing apparatus thereof

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Embodiment Construction

[0022] Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements. The embodiments are described below in order to explain the present invention by referring to the figures.

[0023] figure 2 is a block diagram of a tilt controller according to an embodiment of the invention. The tilt controller includes an actuator control signal generator 110 , a first control signal protector 120 , a second control signal protector 130 , a reference control signal generator 140 , an actuator driving signal generator 150 and an actuator 160 .

[0024] Actuator control signal generator 110 is used via terminal I FCS Received focus control signal (Focus Control Signal, FCS) and through terminal I TCS The received tilt control signal (Tilt Control Signal, TCS) is used to generate and output a control signal for controlling the operation of the...

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PUM

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Abstract

A tilt controller controlling a tilt of an actuator of an optical pickup based on distortion-free control signals and an optical reproducing apparatus including the tilt controller. A control signal generator generates firs and second control signals to control the actuator. A reference control signal generator generates a reference control signal using the first and second control signals. A driving signal generator generates driving signals for the actuator using the first and second control signals, and the reference control signal. Protection circuits prevent the reference control signal generator from affecting first and second control signals. Accordingly, distortion of the actuator driving signals is eliminated.

Description

technical field [0001] The present invention relates to a tilt controller and an optical reproduction device incorporating the tilt controller. More particularly, the present invention relates to a tilt controller that controls tilt based on a non-distortion control signal, and an optical reproduction apparatus incorporating the same. Background technique [0002] figure 1 is a view explaining traditional tilt controllers. refer to figure 1 , a traditional tilt controller includes an actuator control signal generator 10, a first resistor R 1 , the second resistor R 2 , the actuator drive signal generator 20 and the actuator 30 . [0003] The actuator control signal generator 10 generates the first control signal V by using the focus point control signal and the tilt control signal CS1 and at node N 1 output the first control signal V CS1 and at node N 2 output the second control signal V CS2 , these signals are used to control the operation of the actuator 30 . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/13G11B7/09
CPCG11B7/0956G11B20/10009G11B7/09
Inventor 李明旭大塚达宏沈载晟
Owner SAMSUNG ELECTRONICS CO LTD