CN1149742A

CN1149742A - Power saving method for optical data regenerator

Info

Publication number: CN1149742A
Application number: CN 95118568
Authority: CN
Inventors: 林奇成
Original assignee: Acer Computer Co Ltd
Current assignee: BenQ Corp
Priority date: 1995-11-09
Filing date: 1995-11-09
Publication date: 1997-05-14
Anticipated expiration: 2015-11-09
Also published as: CN1067794C

Abstract

The present invention relates to a method for controlling the speed of the gyro shaft motor in the optic disc data regenerating unit. Said motor drives an optic disc to turn and consists of the following steps:(1) set the speed of the gyro-shaft motor at a norminal rated value, (2) checking whether there is no optic disc accessing action to take place in a certain period of time, (3) if the result in step(2) is yes, then the speed of the gyro-motor is set at a specific speed between zero and norminal rated speed.

Description

The electricity saving method of optical data regenerator

The relevant optical data regenerator of the present invention, especially index is according to the electricity saving method of regenerating unit.

The reading device of CD as digital sound-Video Compact Disc (CD ROM disc) reader or optical data disk reader, is a basic equipment of advanced person's multimedia computer system.

The correlation technique of optical data disk reading device control system comprises U.S. Patent number 4,485,337,4,783,774,5,289,097,5,246,479 and 5,345,347.

Above-mentioned relevant technologies provides effective device or method to reach the purpose of creation respectively.

In view of this, the object of the present invention is to provide other method to save power supply.

Method provided by the invention may further comprise the steps: the first step is to be the specified top speed of nominal (Nominal) with the rotating shaft motor speed setting; Whether the check of second step has surpassed the access action that CD does not take place a predetermined periods; If result in step 2 is for being, then in the 3rd goes on foot, the speed setting of rotating shaft motor stopped a certain predetermined speed between (zero velocity) and the top speed.

The present invention will be elaborated in conjunction with the embodiments with reference to the accompanying drawings, so that the present invention is obtained preferable understanding.

Brief Description Of Drawings:

Fig. 1 is mechanism and the electronic component in the optical data regenerator.

Fig. 2 is a flow process of the present invention.

Fig. 3 is when rotating shaft motor rotates under the highest non-nominal rated speed, operation workflow of the present invention.

As shown in Figure 1, the audio and video optical disk reproducing apparatus comprises one read head/CD assembly (pickup head/disc assembly), have one in it and activate device (actuator) 11, this activates, and device 11 comprises a radial coil winding (coil), focusing (focus) coil winding and activates motor (motor).This activates device 11 read head (pickup) 12 is positioned in the different radial positions on CD 13 surfaces.Read head/CD assembly also comprises and reads pre-amplification circuit (preamplifier) 18, for the data and servo (servo) data of amplifying by optical disc surface read.Also comprise a read buffer memory (readbuffer) in the circuit 18, for the data of a certain track of read (track) are sent in regular turn.Each element 19,15 in the disc drives circuit via a bus 102, is made interface with microprocessor 10 and is linked up, and as everyone knows, comprises address, control on the bus 102, reaches data-signal.Digital signal processor (DSP) 19 receives the simulation reading of data of being sent here by circuit 18 in read head/CD assembly.As know technology, and digital signal processor 19 comprises a fetch channel analog filter (filter), and it provides simulating signal to a pulse detector (not shown).The output of pulse detector is original digital reading of data, is sent to a data extractor (not shown).The disc drives control circuit further comprises servocontrol part (servo co-ntrol section) 15, and for the servo data that detects and handle by CD 13, servo data is about servo bursting (BURST), synchronizing pulse and orbital number etc.Servocontrol part 15 via bus 102, links with processor 10, and servocontrol part 15 operates and relevant servo the flowing of sequential and control data of reading of control.Servocontrol part 15 also comprises servo controller (controller), analog/digital converter and digital/analog converter.Simulation output 151 by 15 outputs of servocontrol part is sent to activated drive circuit 90.Activated drive circuit 90 comprises the power amplification control circuit, and it provides one to activate drive signal to a power amplifier (power amplifier), and power amplifier provides Control current to actuating device 11 more in regular turn.Shown system also comprises rotation motor control Driver Circuit 14, for the rotation drive motor 16 in control read head/CD assembly, so that drive audio and video CD 13.System also comprises a host computer interface 17, and by bus 171 and 102, its running is to provide the control between host computer (PC) and related elements and the passage of data.One memory buffer 93 is provided with coordinating the difference of data transmission rate between data transmission rate between host computer interface 17, host computer and host computer interface 17, audio and video CD.Easy speech, the memory buffer 93 temporary transient sound-image datas read by CD 13 of storing.Digital signal processor 19 is also exported a feedback signal 191 to digital motor speed control circuit 91, this motor speed control circuit 91 with feedback signal 191 with make comparisons by processor 10 output signals 101.Result relatively is, with the data transmission rate viewpoint, whether the present rotating speed of motor is too soon or too slow.This result is used to control motor driver 14, and 14 of motor drivers provide electric energy to rotation drive motor 16.Element 92 is digital/analog converter (DAC), and element 94 is an amplifier.

As shown in Figure 2, step 20 is an initial actuating.In step 21, motor 16 is set under the nominal rating speed of sound-Video Compact Disc regenerating unit and rotates.In step 22, whether the access action that detects data of optical disk has had one section schedule time Δ T ₁Do not take place.If yes, then in step 23, motor 16 is set at 1/2nd speed rotation of nominal rating rotating speed, so that save power supply.If in the step 22 is non-, then be back to step 21.In step 24, whether the access action that detects data of optical disk Δ T for some time ₂Do not take place.If yes, 1/3rd speed that are set at the nominal rating rotating speed in step 25 motor 16 are rotated, with further saving power supply in step 24.If for not, be back to step 23 in step 24.In step 26, whether the access action that detects data of optical disk Δ T for some time ₃Do not take place.In step 26 if yes, just stop saving maximum power supplys fully in step 27 motor 16.If non-in step 26, then be back to step 25.

In shown in Figure 3, the rotating speed of motor 16 is in non-nominal rated speed, as the relevant action of the present invention under 1/2 nominal rating speed, the 1/3 nominal rating speed for this reason.In step 30, motor 16 is to run on non-nominal rated speed.Whether detect in the step 31 has the data of optical disk access action to take place.In step 31 if yes, the initial step 20 to Fig. 1 then.If non-in the step 31, then be back to step 30.

Claims

1, rotating shaft motor method for control speed in the data of optical disk regenerating unit, this rotating shaft motor drive CD rotation, comprise the following step:

(1) sets the speed of rotating shaft motor in a nominal rating speed;

(2) detect whether the data of optical disk access action does not take place existing one section scheduled time slot;

(3) if the result in the step (2) is for being, then with the specific speed of rotating shaft motor setting between between zero velocity and nominal rating speed.