SYSTEM AND METHOD FOR CONTROLLING OPTICAL PICKUP UNIT

Abstract

A system for supplying a driving voltage to move an optical pickup unit to a predetermined position includes a storage unit, an output unit, and a drive module. The storage unit is used for storing instructions. The instructions include a move-outwards instruction, a move-inwards instruction, and a move discriminate-position instruction. The output unit is constructed and arranged for outputting the instructions. The drive module is coupled to the output unit for supplying the driving voltage to move the optical pickup unit toward an outermost position based on the move-outwards instruction, move the optical pickup unit to an innermost position based on the move-inwards instruction, and move the optical pickup unit from the innermost position to the predetermined position based on the move discriminate-position instruction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the optical pickup unit control system and method can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, the emphasis instead being placed upon clearly illustrating the principles of the present device. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of an optical disc drive in accordance with an exemplary embodiment, the optical disc drive including an optical pickup unit and an optical pickup unit control system;

FIG. 2 is a block diagram illustrating the optical pickup unit control system of FIG. 1;

FIG. 3 is a schematic diagram representing a moving procedure of the optical pickup unit;

FIG. 4 is a flowchart of a first exemplary procedure of an optical pickup unit driving method;

FIG. 5 is a flowchart of a second exemplary procedure of an optical pickup unit driving method; and

FIG. 6 is a schematic diagram of a traditional optical disc drive.

Claims

1. A system for supplying a driving voltage to move an optical pickup unit to a predetermined position, comprising: a storage unit for storing instructions, the instructions comprising a move-outwards instruction, a move-inwards instruction, and a move discriminate-position instruction;an output unit constructed and arranged for outputting the instructions; anda drive module coupled to the output unit for supplying the driving voltage to move the optical pickup unit toward an outermost position based on the move-outwards instruction, move the optical pickup unit to an innermost position based on the move-inwards instruction, and move the optical pickup unit from the innermost position to the predetermined position based on the move discriminate-position instruction.

2. The system as claimed in claim 1, comprising a command interactive unit for receiving commands for moving the optical pickup unit.

3. The system as claimed in claim 2, comprising a command processing unit for identifying a type of the commands.

4. The system as claimed in claim 3, wherein the commands comprise a power-on discrimination command for discriminating an optical disc if an optical disc drive is powered on and begins initialization with the optical disc already pre-loaded therein.

5. The system as claimed in claim 3, wherein the commands comprise a disc-load discrimination command for discriminating an optical disc if the optical disc is loaded from outside of an optical disc drive.

6. The system as claimed in claim 5, wherein the command interactive unit sends a signal for ejecting a tray of the optical disc drive if the outputting of the move-outwards instruction or the move-inwards instruction is completed.

7. The system as claimed in claim 1, wherein the storage unit stores adjust instructions for adjusting a position of the optical pickup unit.

8. The system as claimed in claim 1, comprising a timer for timing a respective duration of outputting the move-outwards instruction, the move-inwards instruction, and the move discriminate-position instruction.

9. The system as claimed in claim 8, comprising a comparing unit for comparing the respective duration with a respective predetermined time.

10. The system as claimed in claim 9, wherein if the respective duration reaches the respective predetermined time, the comparing unit signals the output unit to stop outputting the move-outwards instruction, the move-inwards instruction, and the move discriminate-position instruction respectively.

11. A method for controlling a driving voltage to move an optical pickup unit to a predetermined position, the method comprising: outputting a move-outwards instruction for controlling the driving voltage for moving the optical pickup unit toward an outermost position;outputting a move-inwards instruction for controlling the driving voltage for moving the optical pickup unit to an innermost position; andoutputting a move discriminate-position instruction for controlling the driving voltage for moving the optical pickup unit to the predetermined position.

12. The method as claimed in claim 1, further comprising the step of receiving commands for moving the optical pickup unit.

13. The method as claimed in claim 12, further comprising the step of identifying a type of the commands.

14. The method as claimed in claim 13, wherein the commands comprise a power-on discrimination command for discriminating an optical disc if an optical disc drive is powered on with the optical disc already pre-loaded therein.

15. The method as claimed in claim 13, wherein the commands comprise a disc-load discrimination command for discriminating an optical disc if the optical disc has just been carried from an open position to a closed position.

16. The method as claimed in claim 15, further comprising the step of sending a signal to indicate a tray can start eject if the outputting of the move-outwards instruction is completed.

17. The method as claimed in claim 16, further comprising steps of: determining whether a loaded signal is received;outputting the move-inwards instruction if the loaded signal is received.

18. The method as claimed in claim 11, further comprising steps of: timing a respective duration of outputting the move-outwards instruction, the move-inwards instruction, and the move discriminate-position instruction; andsending a comparing signal to stop outputting the move-outwards instruction, the move-inwards instruction, and the move discriminate-position instruction respectively if the respective duration reaches a respective predetermined time.

19. The method as claimed in claim 11, further comprising the step of sending a adjust instruction for adjusting a position of the optical pickup unit.

20. A storage medium recorded with an application program, the application program having computer executable steps of: outputting a move-outwards instruction for controlling a driving voltage for moving an optical pickup unit toward an outermost position;outputting a move-inwards instruction for controlling the driving voltage for moving the optical pickup unit to an innermost position; andoutputting a move discriminate-position instruction for controlling the driving voltage for moving the optical pickup unit to a predetermined position.