TWI263977B - Device for lowering the power consumption of disk drive and method used thereof - Google Patents

Abstract

The present invention is to provide a device for lowering the power consumption of a disk drive and a method used thereof. After sampling the control signal of a carrier and comparing the result thereof with a predetermined reference signal, whether the index of output signal needs to be increased or reduced may be realized. By the positive or negative change of direction of the index of the output signal, the phase of exciting control signal may be obtained so as to control the rotational direction of a motor and the termination timing. Since the exciting control signal produced thereby needs not to be output continuously, only the exciting control signal of a predetermined number needs to be output after the determination of the increase or reduction of the index; and thus, the output control time can be largely reduced to decrease the power consumed by the disk drive substantially.

Description

1263977

[Technical Field] The present invention is a device and method for reducing the power consumption of a disc player, and is directed to reducing the power consumption rate of the disc drive (f ο 1 1 owi ng), thereby achieving power saving The purpose. [Prior Art] In the currently used disc player system, tracking (f〇u〇wing) is your power consumption action. • The speed of this action must be fast enough to =: the access speed of the disc player is increased, but This range of motion is quite a, so the target has developed quite a bit of her contention + tuy / Tian Xi's technically different ways to make the tracking step have a y rate of power consumption is still amazing. News _ ffl, bean towel >#^ Figure is not for today's commonly used circumstance control - vehicle control signal 20 2 . The current method is that, after some special sampling time 2 〇 4, it will take the rush 20 5 and use this voltage as the excitation control signal 2 (^ a specific sampling & voltage signal 2 0 6 will continue to output until The next output is taken. The child magnetron is replaced by the next sampling voltage value 205. Thus | ί 2 04 to the temporary, through the direction of rotation "is still. The inventor hereby hard to control the replacement of the vehicle motor Control method, not only big = a new method 'to come' and its performance is more than the previous control of the control to save energy [invention content] Wanfa. The device and method. After the coefficient signal processing, compare, The invention relates to a period of low power which is obtained after comparison. The invention is a signal inputting waveform generator for reducing the power consumption of the disc drive signal generated by the waveform generator via the signal obtained by the obtained signal and the two preset reference voltage levels. After the output is desired

Page 5 1263977 V. INSTRUCTIONS (2) The excitation signal is used to control the power driver and allow the vehicle motor to rotate forward or reverse in the direction of rotation, or even stop, because the optical head is in the correct light. In order to achieve the above object, the inventors utilized a signal processor, a comparator, and a waveform generator to achieve sampling control signals and to reduce the required power. The present invention is a device and method for reducing the power consumption of a disk drive. Please refer to the second figure, which is an embodiment of the present invention. The device comprises a signal controller 100, an access controller 1 2 0, a signal processor 1 400, a comparator 1 50, a waveform generator 1 60, a power driver 1 7 0 And a carrier motor 1 800. The signal controller 1000 receives a tracking error signal (TE) and a center error signal (CSO), and outputs a tracking control signal (TRO), and the tracking control signal is an access controller 1 2 0 The input signal can thereby control whether the optical head 130 can read or write. The signal controller 100 outputs a carrier control signal 1 0 8 to the signal processor 1 4 0, and the signal processor 1 400 outputs the signal control signal 1 0 to the signal controller 100. 8 is sampled by digital signal processing (DSP), and then its sample carrier control signal 1 44 is input to the comparator 150, and compared with a positive reference signal 1 5 2 and a negative reference signal 1 5 4, and compared The device 150 outputs an output signal index according to the comparison result. If the sample carrier control signal 14 4 is greater than the positive reference signal 1 5 2, the output signal of the comparator 150 is incremented by one; if the sample control signal 1 4 4 is smaller than the negative reference signal

1263977 V. Invention Description (3) No. 1 5 4, the output signal index of the comparator 150 is decremented by one. The waveform generator 160 outputs a predetermined number of equal intervals of periodic two-phase excitation control signals 1 β 2 ( f Μ 0 and F Μ 0 2) according to the comparator 1 50 output signal index. The phase of the two-phase excitation control signal 162 changes with the increase or decrease of the output signal index, thereby controlling the power driver 1 7 〇. The power driver 170 generates two sets of complementary motor control signals 147 according to the two-phase excitation control signal 1 β 2 to control the vehicle motor to rotate forward or reverse or stop, thereby controlling the optical head. 1 3 0. Please refer to the third figure, which is an internal structure diagram of the signal controller in the present invention. These include a tracking error controller 1 〇 2 and a carrier controller 104, and two amplifiers 丨丨4 and 1丨8. When the circumstance error controller 接收2 receives the input circumstance error signal (TE), a corresponding circulatory control signal (TRO) output is generated, and a part of the tracking control signal is output to the access controller. 1 2 0 'One part will be input to an amplifier n 4 . The vehicle controller 104 provides a selection function for selecting an output from one of the tracking control signal (TR0) and the center error signal (CSO). In other words, the vehicle control signal 1 0 8 is a tracking control signal or One of the central error signals. When the vehicle controller 104 selects the tracking control signal (TRO), the amplifying device 11 reduces the tracking control signal (TRO) by a multiple of multiples to avoid the tracking control signal (TRO) via the carrier. The controller 104 can process the nickname overflow (〇ve ^ f 1 〇w) generated by the month bk. If the TT is reduced by a certain multiple of the amplifier 114 before the vehicle controller 1〇4 is turned in, the output signal needs to be outputted when the vehicle controller 104 outputs a signal. The amplifier 1 18 amplifies and restores the complex multiple.

1263977

V. Invention Description (4) Please refer to the third B diagram. The vehicle controller 丨〇4 is composed of a filter 1 0 4 1 and a first-you-# ig 滹 wave cry n 1 brother, and low pass The lower-level low-pass should be connected to the state 1 〇4 3, and the low-pass filter of the first-level low-pass filter 1 041 is a low sampling frequency of a low sampling frequency. cry. The ginseng, the ?, the fourth picture, which is the two excitation control signals produced by the above-mentioned waveform generator 16 ,, the vertical axis of the figure is the voltage value, and the horizontal axis is the two-phase sine wave 30 1 is the above The vehicle control signal 丨〇8. In the figure, the signal signal 3〇/ is the output signal of the waveform generator 1 60, and the periodicity=3 is wrong. The sampling vehicle control signal 144 is used to control the signal of the vehicle. f sub-comparison 15 〇 processing, the sampling part is;

Determiner. In this way, unlike the conventional sine wave signal output power, the A-stage signal 3 0 3 can reduce the power of the disc player. The periodic signal 3 〇 3 into one =, will be explained in Figure 6A. Step 5: When the vehicle control signal 1 〇8 is input to the signal processor 1 4 〇, σσ, the signal processor 140 will generate a time interval corresponding to the set sampling frequency 3 〇 5 vehicle control signal 1 0 8 samples 'The sampling frequency can be the sampling frequency of the first-stage low-pass filter 1 043 described above. When the sampling time is 3 0 2, the vehicle control signal 1 〇 8 is sampled, and then the sampling vehicle control unit 144 is input to the comparator 150, and in the comparator 150 with the positive reference 'number ° 15 2 and negative reference signal 1 5 4 compared. Please refer to the fifth figure. This figure is an embodiment of the present invention. In the figure, the vertical axis is the output signal index increase value of the comparator 1 50, and the horizontal axis is the reference signal voltage value. If the sampling vehicle control signal 1 "2" is 152, the output signal index is incremented by one if the sampling vehicle portion is

Page 8 丄 977 Fifth sample, invention description (5) Less than negative McCaw signal number] 54 ^ Control signal 144 between the positive table] / output signal index minus -, if the ΐ output signal index is maintained Change 52 and negative reference signal I54 wheel ginseng " month multi-photograph of the sixth map, this is an example of the signal index increase _, table ... shows ' Ming. When the above test signal is 1 5 2, at this time, the control signal 1 4 4 is larger than the sampling time point, and the waveform generator 1 60 will have the control signal 1 〇 8 taken... Completion signal 1 0 8 waveform, continuous output of the preset number of complex Zhao 'Asia / round output signal index increase the result of the input into the isochronous m _ pulse signal 3 Ο 9 ie Λ a / (interval The pulse signal 3 Ο 9, and this addition will cause the carrier to reach the phase = signal 162, and the output signal is reduced by one, and the table # &# j turns. Conversely, if the output signal index is The control signal 144 is smaller than the negative reference signal 154, and the motor is inverted by the escape method. The frequency of the two-phase excitation control signal 162 can be the sampling of the first-stage low-pass filter S UH1 described above. The first stage low pass chopper 1 0 4 1 is the chirp frequency sampling, and the second stage low pass filter 丨〇 4 3 is the low frequency sampling, so the sampling time interval of the carrier control signal 1 08 is 3〇5, The output time interval of the two-phase excitation control signal is greater than 3 0 7 . After that, the waveform generator 16 6 is no longer generated. The power driver 170 will continue to rotate according to the previous two-phase excitation control signal 162. The longer the output time of the two-phase excitation control signal 162, the more power it consumes, but in this method, The carrier control signal 3 〇i is only required to be sampled to form a periodic signal 3 0 3 , and the periodic signal 3 0 3 is a pulse wave signal 30 obtained by sampling the vehicle control signal 301. 9

1263977 V. The invention (β) ^ is composed, and the number of samples is 玎 set, and = f is the two-phase excitation control signal 162 of the present invention. Only the head of Figure 6A. The excitation control signal 1 6 2 is compared with the rain phase excitation control σΤΙ of the prior art in the first figure. It can be clearly seen that the two-phase excitation control signal of the required output of the present invention is 16 2 , which is a plurality of pairs. With the control signal 3 0 1 sampling a preset number of pulse signals 3 〇 9; and the two-phase excitation control signal of the prior art 2 0 6 is the sampling of the vehicle control signal 2 0 2 once, that is, the sampling is continuously output The value is used as a two-phase excitation control signal 2 0 6 . Therefore, compared with the conventionally known signals, the output signal does not have to continue the sine wave period of the entire vehicle control signal 301, and the rotation of the carrier motor can be controlled to reduce the power consumption. We only need to output the two-phase excitation control for a short period of time to achieve the control load and the gas is 1 8 rw α [ + 利 也1 6 2 will save the required work = purpose. Not only can a large scale be achieved. #And the planting motor 18〇 can still maintain the efficiency of the action in the 6th A picture of the pumping of the offender as the adjustment pulse signal 3 0 9 'earth 160 series use - group gain signal impulse number 3 0 9 negative The edge does not make the L value of the L, but the pulse is directly to the position of the , position, = cup signal for the level adjustment control, and the array pulse signal 3 0 9 formed, such as the two-phase excitation control The signal 1 62 is caused by the complex change, which will easily cause the stability of the pulse signal 3 0 9 of the carrier horse. The swaying of the cymbal, so that the optical head 16 〇, therefore, the present invention also provides another pulse signal in Figure 6A, 3 〇 green =: embodiment, as shown in the sixth beta, number 311, in the sixth B The middle step = another embodiment of the pulse $ generator 160 uses two sets of gain signals. The first and second inventions (7) are used as the positive edge level and the negative edge of the adjustment pulse signal 3 1 1 respectively. The adjustment value of the level amplification, so the negative edge portion of the pulse signal 31 1 is not directly pulled to 0 but pulled between the positive edge level and the zero level, so that the pulse signal in the sixth picture A can be solved. 3 0 9 caused the problem of the carrier motor 1 800 shaking. Therefore, when the carrier motor 180 moves the optical head 130 to the correct track, the center error signal (CSO) is zero, and the carrier control signal 1 0 8 is also zero, so the comparator 1 The output signal index of 50 is unchanged, so the waveform generator 1 60 will not generate the two-phase excitation control signal 1 6 2, so the power driver 170 does not generate the motor control signal 1 7 4, the carrier motor 1 8 0 thus stops, and the optical head 130 starts the access action. Please refer to the seventh figure, which is a flow chart of a method for reducing power consumption of a disk drive according to the present invention. First, detecting the position of the optical head 600 to know the difference between the optical head and its target light; thus obtaining the central error signal 6 0 2 is the distance difference between the optical head and the target optical track; forming a vehicle control Signal 6 0 4 is outputted, and the vehicle control signal is obtained by processing the central error signal through the vehicle controller; and the vehicle control signal is subjected to digital signal sampling processing 6 0 6 to obtain a Sampling the vehicle control signal; and comparing the sampling vehicle control signal with the positive reference signal and the negative reference signal to determine whether the sampling vehicle control signal is greater than the positive reference signal (P-th) or less than Negative reference signal (N-th), or between positive reference signal and negative reference signal. If the sampling vehicle control signal is greater than the positive reference signal, step 6 1 0 is performed. If the sampling signal is less than the negative reference signal, step 6 2 0 is performed. If the positive reference signal is between the negative reference signal and the negative reference signal, step 6 3 0 is performed.

Page 11 1263977 V'Inventive Note (8) When the sampling vehicle control signal is greater than the positive reference signal, 6 1 0, the output signal index is incremented by one. Then, the waveform generator 160 sends a preset plurality of equal-phase two-phase excitation control signals to the power driver due to the increase of the output signal index. After the output of the two-phase excitation control signal is completed, the waveform generator 160 will not continue to generate signals to save power consumption and wait for the next excitation control signal to come. Although the waveform generator 160 does not continuously generate a signal, the power generator continues to output the motor control signal to control the forward rotation of the carrier motor 6 1 4 according to the two-phase excitation control signal received in the most recent time. When the sample carrier control signal is less than the negative reference signal 6 2 0, the output signal index is decremented by one. Then, the waveform generator 160 sends out a predetermined plurality of equal-phase two-phase excitation control signals to the power driver because the output signal index is reduced, and the two-phase excitation control signal and the two phases are excited. The phase of the control signal is reversed. After the output of the two-phase excitation control signal is output, the waveform generator 160 does not continue to generate a signal, thereby shortening the output control time to save power consumption and waiting for the next excitation control signal to come. However, even if the waveform generator 160 does not continuously generate a signal, the power generator continues to output the motor control signal to control the rotation of the carrier motor according to the two-phase excitation control signal received in the most recent time. . If the sampling carrier control signal is between the positive reference signal and the negative reference signal, the comparator output signal index is not changed to 6 3 0, so the waveform generator 160 returns the output signal to zero, and the power generator The motor control signal is stopped to the carrier motor, so the vehicle motor stops rotating. And this step

Page 12 1263977 V. Description of the invention (9) The 650 will be continuously repeated to control the optical head to achieve the correct reading and writing position. According to the above description, it is only one embodiment of the present invention, which is the apparatus of the present invention, and the flow is not limited thereto, so any changes or modifications implemented by the skilled person in the field of the present invention are implemented. It is covered by the patent in this case.

Page 13 1263977

=一^ is the device for tracking control used by the conventional CD-ROM machine; θ car and <Tube example to reduce the power consumption of the disk player. The second picture is this hair--......... The second diagram is a structural diagram of the present invention; the third diagram is the internal structure diagram of the signal controller of the preferred embodiment of the present invention; The fourth figure inside the vehicle controller of the embodiment is a waveform diagram of the two-phase excitation control signal of the waveform of the preferred embodiment of the present invention; the fifth picture generated by the time of birth is an index of a preferred embodiment of the present invention. Waveform diagram of the flat X ^ output signal FIG. 6A is a waveform diagram of a two-phase excitation control signal according to a preferred embodiment of the present invention; A waveform diagram of a two-phase excitation control signal is provided in a preferred embodiment; and a seventh diagram of the gain is a flowchart of a method in accordance with a preferred embodiment of the present invention. t Low-disc consumption machine power Figure description [General] 2 0 2 Vehicle control signal 2 0 5 sampling voltage [Invention] 2 0 4 sampling time 2 0 6 excitation control signal

Page 14 1263977 Schematic description 1 0 0 signal controller 1 0 4 carrier controller 1 0 4 3 second low-pass filter 1 1 4 amplifier 1 2 0 access controller 1 4 0 signal processor 1 5 0 comparator 1 5 4 negative reference signal 1 6 2 two-phase excitation control signal 1 7 4 two sets of complementary motor control 3 0 1 sine wave 3 0 3 periodic signal 3 0 7 time 3 1 1 pulse signal 1 0 2 Switching error controller 1041 first low pass filter 1 0 8 carrier control signal 1 1 8 amplifier 13 0 optical head 1 4 4 sampling vehicle control signal 1 5 2 positive reference signal 1 6 0 waveform generator 1 7 0 Power driver signal 1 8 0 carrier motor 3 0 2 sampling time 3 0 5 time interval 3 0 9 pulse signal

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Claims (1)

Kiss 6·7 Case No. 93116869 Rev. 6 Scope of Application Patent 1. A device for reducing the power consumption of a disc drive, comprising: a signal controller for receiving a central error signal and generating a vehicle control signal; The signal processor samples the control signal to generate an output signal; a comparator receives the output signal of the signal processor, compares the number with a positive reference signal and a negative reference signal, and generates An output signal; and a waveform generator for receiving an output signal of the comparator and generating a periodic signal, wherein the periodic signal is obtained by sampling the control signal of the vehicle, and the signal is in the control signal of the vehicle The periodic signal of the sampling period is sampled, and the sampling portion is settable. 2. The device for reducing power consumption of a disk drive according to the first aspect of the patent application, wherein the signal controller further comprises a tracking error controller and a carrier controller, and the tracking error controller receives one The tracking error signal is generated and a tracking control signal is generated; and the vehicle controller receives the central error signal and the arbitration control signal and selects one of the outputs as the vehicle control signal. 3. The device for reducing power consumption of a disc drive according to item 2 of the patent application scope, wherein when the input signal of the vehicle controller is a tracking control signal, the loop control signal can pass through an amplifier before inputting The tracking control signal is reduced by a multiple of multiples to avoid a situation in which the tracking control signal generates a signal overflow (ο ν erf 1 〇 w) when processed by the vehicle controller. 4. Reduce the power consumption of the disc drive as described in item 3 of the patent application scope. Page 16 1263977 Case No. 93116869_Yearly Revision _ 6. Application for patent scope device, wherein the vehicle controller is used when the input signal is reduced by a multiple of the amplifier, and then the signal is outputted by the vehicle controller. The output signal can be input to another amplifier to amplify the complex multiple. 5. The apparatus for reducing power consumption of a disk drive according to claim 2, wherein the carrier controller is composed of a first low pass filter and a second low pass filter. 6. The apparatus for reducing power consumption of a disk drive according to claim 5, wherein the first stage low pass filter is a low pass filter with a high sampling frequency; and the second stage low pass filter is A device for reducing the power consumption of a disc drive according to the first aspect of the patent application, wherein the signal processor applies the digital signal sampling processing technique to the vehicle control signal, and A sample carrier control signal is output. 8. The apparatus of claim 1, wherein the comparator output signal is an output signal index. 9. The device of claim 8, wherein the comparator is configured to increase the power consumption of the disk by the first time; When the sampling vehicle control signal is less than the negative reference signal, the output signal index is decremented by one; and the sampling vehicle control signal is between the positive reference signal and the negative reference signal, the output signal index remains unchanged. 10. The apparatus for reducing power consumption of a disc drive according to item 8 of the patent application scope, wherein the waveform generator outputs a set of a predetermined number of periodic two-phases of equal time intervals according to the comparator output signal index. Excitation control Page 17 93116869 Amendment Patent application scope signal 1263977 1 1. If the patent application scope is the first item of the patent application, the phase of the two-phase excitation control signal changes with the increase and decrease of the round-robin index. . ^ 12. The device for reducing power consumption of a disk drive according to claim 10, wherein the two-phase excitation control signal is after the waveform generator 2 receives the output signal generated by the comparator. The waveform generator starts at the sampling time point, continuously samples the vehicle control signal according to the waveform of the vehicle control signal, and outputs a preset number of pulse signals of a plurality of equal time periods 5 as the Two-phase excitation control signal. ° 13. The device for reducing the power consumption of the disc drive as described in item 10 of the patent application scope, wherein the waveform generator/group gain signal has a positive edge level of the two-phase excitation control signal. 14. The apparatus for reducing power consumption of a disk drive according to claim 10, wherein the waveform generator uses a rain group gain signal and separately adjusts a positive edge and a negative edge of the two phase excitation control signals. Bit. The device further includes a power driver for receiving the two-phase excitation control signals, the power driver according to the two-phase excitation control signal, as described in claim 10, wherein the device further includes a power driver. , output group motor control signal. The device for reducing the power consumption of the disc drive according to the fifteenth patent application scope, further comprising a carrier motor, receiving the two sets of motor control signals, so that the carrier motor controls an optical head to move to the On the light track. 17. Reduce the power consumption of the disc player as described in item 16 of the patent application scope. 6. The application for the patent garden, wherein the two sets of horses 18, a lowering disc input, a vehicle control signal sampling, the vehicle control signal, the signal processor; inputting the sampling vehicle to control the sampling vehicle Control signal and comparison; generating an output signal cable to generate a predetermined number of presets by the waveform generator according to ^1 9, as in the patent application method, including steps; selecting _ _ center error signal and > The control signal is controlled by a load of 2 G, such as the patent application specification ί, in which the increase and decrease of the two phases W are changed. 21, such as a patent application method, wherein the signal is between the temples and the vehicle 2 2, if the patent application is revised, the control signal is 'two: the rate of power consumption', including ··· n Giving a signal processor number to obtain a sample carrier control signal from a signal to a comparator, wherein the comparator compares the positive reference signal and a negative reference signal by the comparison result of the comparator; The two-phase excitation control signal of the time interval is the round-off signal index. Reduce the power consumption of the disc drive as described in Item 18. One of the control signals is used as the controller. The phase of the power consumption control signal for reducing the power consumption of the disk drive described in Item 18 corresponds to the reduction of the power consumption of the disk drive according to the power consumption of the device. In the case of reducing the power consumption control signal of the disc drive as described in item 18 of the lemon, it is greater than the positive reference signal, wherein the core 4 output signal index is increased by one. Page 19 12639ΊΊ Wei Liu, application patent scope 2 3, such as the method of patent application to #, wherein the waveform produces a power driver, so that the control, thereby making a carrier motor positive, as in the patent application method, Sending the two 'waveform generators' stops the power generator and continues to output the two sets of turns according to the most recent signal. 2 5. A method of patent application, wherein the sampling reduces the index of the output signal by one. 2 6. A method according to the patent application, wherein the waveform generates a power driver, so that the power is reversed by a carrier motor. According to the method of the patent application, the two waveform generators are stopped when the two of the waveform generators are sent out. The power generator continuously outputs the two sets of turns according to the most recent signal. 2 8. As shown in Patent Application No. i3ll6869, the reduction of the power consumption of the disc drive described in item 2 of the enclosure is carried out by the generator to send the two-phase excitation control signals to a power driver to generate two sets of motor control signals. The two-phase excitation control signal is sent to the power driver after the power consumption control signal of the reduction power consumption of the disc drive according to the second and third items, and the two-phase excitation control motor control signals received during the time are controlled to control The lower limit power consumption control signal of the lower limiter of the motor of the vehicle is less than the negative reference signal, and the power consumption of the reducer of the lower limit is described in item 25, and the two-phase excitation control is sent out. The signal-to-rate driver generates two sets of motor control signals, and the power-saving control signals of the reduced power consumption of the disk drive described in item 26 are sent to the power driver to send the rain-phase excitation control signals, and the time is received. The two-phase excitation control motor control signals are sent to control the reduction of the power consumption of the disc motor as described in item 18 Page 20 1263977 _ Case No. 93Π6869_年月曰曰修_6. Method of applying for patent scope 'Where the sampling vehicle control signal is between the positive test signal and the negative reference signal, the output signal index is maintained constant. 2. The method for reducing the power consumption of a disc drive according to claim 28, wherein the waveform generator stops outputting the two-phase excitation control signals to a power driver, so that the power driver stops output motor control. The signal is given to a carrier motor, so the carrier motor does not operate. 30. The method of reducing power consumption of a disc drive according to claim 18, wherein the waveform generator adjusts a positive edge level of the two phase excitation periodic control signals by using a set of gain signals. 3 1. The method for reducing power consumption of a disc drive as described in claim 18, wherein the waveform generator uses two sets of gain signals and respectively adjusts positive edges of the two-phase excitation periodic control signals and Negative margin level. Page 21