CN100397502C - Reading device of optic disk machine and its control method - Google Patents
Reading device of optic disk machine and its control method Download PDFInfo
- Publication number
- CN100397502C CN100397502C CNB200410095549XA CN200410095549A CN100397502C CN 100397502 C CN100397502 C CN 100397502C CN B200410095549X A CNB200410095549X A CN B200410095549XA CN 200410095549 A CN200410095549 A CN 200410095549A CN 100397502 C CN100397502 C CN 100397502C
- Authority
- CN
- China
- Prior art keywords
- signal
- output signal
- trace
- processing unit
- read head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present invention relates to a reading device of an optic disk machine and a control method thereof, wherein the reading device is an optical read head which is used for regulating an angle that the optical read head is perpendicular to an optical storing medium by a voice coil motor and moving in radial direction by a tracking motor along the optical storing medium when the optical read head reads the optical storing medium to generate a signal. The present invention comprises a radio frequency processing unit which is used for amplifying a signal and generating a tracing error signal and a servo signal, a storage unit used for storing a plurality of tracking processing die sets, a digital signal processing unit which is provided with a tracing processing die set and a tracking selection die set and a driving processing unit respectively driving the voice coil motor and the tracking motor to run according to the tracing output signal and the feed motor output signal, wherein the tracing processing die set is used for processing the tracing error signal and generating a tracing output signal, the tracking selection die set is used for selecting one of the tracking processing die set in the storage unit according to the servo signal and executing the tracking processing die set in order to process the tracing output signal and generate a feed motor output signal.
Description
Technical field
The present invention relates to a kind of reading device of optic disk machine and control method thereof (READING DEVICE OF ANOPTICAL DRIVE AND ITS CONTROL METHOD).
Background technology
Capacity increase along with optical storage media, and people are for the requirement of optical storage media access speed, the orbital distance that stores data in the optical storage media now is more and more littler, and the principal axis motor rotation speed of CD-ROM device is but climbed up and over height more, therefore under the high situation of the data gauge of optical storage media Spindle Motor little and CD-ROM device, optical read head must be controlled exactly, correctly access data successfully can be reached.
Shown in Figure 1A, optical storage media 11 is to be placed on the plummer 121 (optical storage media 11 in figure only zone, display part), and by rotating shaft motor 122 driven rotary optical storage medias 11, optical read head 141 is installed on the optically read headstock 131, and optical read head 141 is to send laser to optical storage media 11 and be received from optical storage media 11 laser light reflected to carry out the access of data.Optically read headstock 131 is to be slidedly arranged on a slide rail 133 and to connect a tooth bar 132, and tooth bar 132 is and gear 152 engagement, and seeking rail motor 151 is driven gear 152 rotations, makes optically read headstock 131 moving radially at slide rail 133 upper edge optical storage medias 11.Voice coil motor 142 is to be arranged in the optically read headstock 131, and it is to adjust the angle of optical read head 141 perpendicular to optical storage media 11.Therefore seek rail motor 151 and voice coil motor 142 by control and can adjust the position and the optical read head 141 of optically read headstock 131 and focus on the position of optical storage media 11, and then make optical read head 141 can read the data of optical storage media 11 each track.
Shown in Figure 1B, rf processor 161 is to amplify the signal 171 that optical read head 141 is read, and from signal 171, produce a trace rub-out signal 172 and a servosignal 173, numerical digit signal processor 162 is fixedly module processing trace rub-out signal 172 and servosignals 173 of foundation one, and produces a trace output signal 174 and feeding motor output signal 175.Driving wafer 163 is actions of controlling voice coil motor 142 respectively and seek rail motor 151 according to trace output signal 174 and feeding motor output signal 175.
Shown in Fig. 1 C, optical read head 141 received reflected light have 0 rank reflected light 181 ,-1 rank reflected light 182 and 1 rank reflected light 183.181 can be divided into four regional A, B, C and D again in the 0 rank reflected light, can obtain several signals after the intensity of reflected light in these four zones being made up and handling via photovalve and use for servocontrol.Wherein aforesaid trace rub-out signal 172 is to be defined as (A+C)-(B+D), represents that the A district adds that the C district deducts the intensity of reflected light that the B district deducts the D district again in the 0 rank reflected light 181.Servosignal 173 is to be defined as (A+B)-(C+D), represents that the A district adds that the B district deducts the intensity of reflected light that the C district deducts the D district again in the 0 rank reflected light 181.
Shown in Fig. 1 D (optical storage media 11 in figure only zone, display part), control voice coil motor 142 and seek rail motor 151 via the method shown in Figure 1B, because the difference of each spare part in the reading speed of CD-ROM device and the CD-ROM device, the characteristic of each CD-ROM device is difference to some extent also, therefore when optical read head 141 radially tilts, if numerical digit signal processor 162 is only with single module control and treatment trace rub-out signal 172 and servosignal 173, cause voice coil motor 142 can't adjust the angle of inclination of eliminating optical read head 141 smoothly easily, so if optical read head 141 is during run-off the straight, situation about tilting is difficult to revise, also the reading capability of limit optical read head 141.
Therefore, how to provide a kind of reading device of optic disk machine and control method thereof, handle trace rub-out signal and servosignal with the kenel of multimode group, and the inclined degree of suitable adjustment optical read head, one of current just important topic.
This shows that above-mentioned existing reading device of optic disk machine and control method thereof obviously still have inconvenience and defective, and demand urgently further being improved in structure, method and use.In order to solve the problem that reading device of optic disk machine and control method thereof exist, relevant manufacturer there's no one who doesn't or isn't seeks the road that solves painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing reading device of optic disk machine and control method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of the reading device of optic disk machine and the control method thereof of founding a kind of new structure, can improve general existing reading device of optic disk machine and control method thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing reading device of optic disk machine and control method thereof exist, handle module processing trace rub-out signal and servosignal and provide a kind of new reading device of optic disk machine and control method thereof to make it have at least one rail of seeking, so can suitably adjust the inclined degree of optical read head.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of reading device of optic disk machine according to the present invention's proposition, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head by a voice coil motor perpendicular to this optical storage media, and seek move radially this optical read head of rail motor along this optical storage media by one, it comprises: a RF processing unit, and it is to amplify this signal and produce a trace rub-out signal and a servosignal; One mnemon, it is to store a plurality of rails of seeking to handle module; One numerical digit signal processing unit, it is to have trace processing module and to seek rail selection module, it is to handle this trace rub-out signal and produce a trace output signal that this trace is handled module, this seeks rail selection module is to select these to seek rail in this mnemon according to this servosignal to handle one of module, and carries out this and seek rail processing module to handle this trace output signal and to produce a feeding motor output signal; And one drive processing unit, and it is to drive this voice coil motor respectively and this seeks the action of rail motor according to this trace output signal and this feeding motor output signal.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid reading device of optic disk machine and control method thereof, wherein said RF processing unit, this numerical digit signal processing unit, this driving processing unit, this voice coil motor, this seeks the rail motor and this optical read head is to form a feedback control loop.
Aforesaid reading device of optic disk machine also comprises: a low-pass filter, it is the high-frequency signal in this trace output signal of filtering and this feeding motor output signal.
Aforesaid reading device of optic disk machine, wherein said numerical digit signal processing unit also comprises: an Analogue-to-digital Converter (ADC), it is that this trace rub-out signal and this servosignal are converted to the numerical digit signal by anaiog signal; And a numerical digit analogy converter, it is to be anaiog signal with this trace output signal and this feeding motor output signal by the numerical digit conversion of signals.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.A kind of reading device of optic disk machine according to the present invention's proposition, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head by a voice coil motor perpendicular to this optical storage media, and seek move radially this optical read head of rail motor along this optical storage media by one, it comprises: a RF processing unit, and it is to amplify this signal and produce a trace rub-out signal and a servosignal; One numerical digit signal processing unit, it is to have a trace to handle module, an a plurality of rail processing module and multiplexer sought, it is to handle this trace rub-out signal and produce a trace output signal that this trace is handled module, each these seek rail to handle module be to handle this trace output signal and produce a feeding motor output signal, this multiplexer is to select these to seek rail according to this servosignal to handle one of module; And one drive processing unit, and it is to drive this voice coil motor respectively and this seeks the action of rail motor according to this trace output signal and this feeding motor output signal.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid reading device of optic disk machine and control method thereof, wherein said RF processing unit, this numerical digit signal processing unit, this driving processing unit, this voice coil motor, this seeks the rail motor and this optical read head is to form a feedback control loop.
Aforesaid reading device of optic disk machine also comprises: a low-pass filter, it is the high-frequency signal in this trace output signal of filtering and this feeding motor output signal.
Aforesaid reading device of optic disk machine, wherein said numerical digit signal processing unit also comprises: an Analogue-to-digital Converter (ADC), it is that this trace rub-out signal and this servosignal are converted to the numerical digit signal by anaiog signal; And a numerical digit analogy converter, it is to be anaiog signal with this trace output signal and this feeding motor output signal by the numerical digit conversion of signals.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.The control method of a kind of reading device of optic disk machine that proposes according to the present invention, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head perpendicular to this optical storage media, and along this optical read head that moves radially of this optical storage media, it comprises: amplify this signal and produce a trace rub-out signal and a servosignal; Handle this trace rub-out signal and produce a trace output signal; Select one to seek rail processing module according to this servosignal; Carry out this and seek rail processing module to handle this trace output signal and to produce a feeding motor output signal; And according to this trace output signal and this feeding motor output signal drives this voice coil motor respectively and this seeks the action of rail motor.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The control method of aforesaid reading device of optic disk machine also comprises: the high-frequency signal in this trace output signal of filtering and this feeding motor output signal; Changing this trace rub-out signal and this servosignal is the numerical digit signal; And change this trace output signal and this feeding motor output signal is an anaiog signal.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
Reading device of optic disk machine of the present invention, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of optical read head by a voice coil motor (coil motor) perpendicular to optical storage media, and seek the move radially optical read head of rail motor (sled motor) by one along optical storage media, comprise that a RF processing unit, a mnemon, a numerical digit signal processing unit and drive processing unit.Wherein RF processing unit is amplifying signal and produces a trace rub-out signal and a servosignal; Mnemon is to store a plurality of rails of seeking to handle module; The numerical digit signal processing unit is to have a trace (tracking) processing module and to seek rail (sled) selection module, wherein trace processing module is to handle the trace rub-out signal and produce a trace output signal, seeking rail (sled) selection module is to select to seek one of rail processing module according to servosignal in the unit from remembering, and carries out and seek rail processing module to handle the trace output signal and to produce a feeding motor output signal; Driving processing unit is the action that drives voice coil motor respectively and seek the rail motor according to trace output signal and feeding motor output signal.
For reaching above-mentioned purpose, according to reading device of optic disk machine of the present invention, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of optical read head by a voice coil motor perpendicular to optical storage media, and seek the move radially optical read head of rail motor by one along optical storage media, comprising: a RF processing unit, a numerical digit signal processing unit and drive processing unit.Wherein RF processing unit is amplifying signal and produces a trace rub-out signal and a servosignal; The numerical digit signal processing unit is to have a trace to handle module, an a plurality of rail processing module and multiplexer sought, wherein trace processing module is to handle the trace rub-out signal and produce a trace output signal, seeking rail processing module is to handle the trace output signal and produce a feeding motor output signal, and multiplexer is to select to seek rail according to servosignal to handle one of module; Driving processing unit is the action that drives voice coil motor respectively and seek the rail motor according to trace output signal and feeding motor output signal.
For reaching above-mentioned purpose, control method according to reading device of optic disk machine of the present invention, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of optical read head perpendicular to optical storage media, and along the optical read head that moves radially of optical storage media, comprise amplifying signal and produce a trace rub-out signal and a servosignal, then handle the trace rub-out signal and produce a trace output signal, select one to seek rail processing module according to servosignal then, carry out again seek rail handle module with handle the trace output signal and and produce a feeding motor output signal, and drive voice coil motor and the action of seeking the rail motor respectively according to trace output signal and feeding motor output signal.
By technique scheme, reading device of optic disk machine of the present invention and control method thereof have following advantage at least, reading device of optic disk machine of the present invention and control method thereof are to have at least one rail of seeking to handle module processing trace rub-out signal and servosignal, so can suitably adjust the inclined degree of optical read head.
In sum, the reading device of optic disk machine of special construction of the present invention and control method thereof, it has above-mentioned many advantages and practical value, and in like product and method, do not see have similar structural design and method to publish or use and really genus innovation, no matter it is at product structure, bigger improvement is all arranged on method or the function, have large improvement technically, and produced handy and practical effect, and more existing reading device of optic disk machine and control method thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a novelty, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Figure 1A is the synoptic diagram of the existing known reading device of optic disk machine of a demonstration;
Figure 1B is the block diagram of the existing known reading device of optic disk machine of a demonstration;
Fig. 1 C is the existing known reading device of optic disk machine of a demonstration, and wherein the reflected light of optical storage media is the synoptic diagram with three road light;
Fig. 1 D is the existing known reading device of optic disk machine of a demonstration, and wherein optical read head is the synoptic diagram that tilts;
Fig. 2 is the block diagram of a demonstration according to the reading device of optic disk machine of preferred embodiment of the present invention;
Fig. 3 A is the reading device of optic disk machine of a demonstration according to preferred embodiment of the present invention, and wherein optical read head is the synoptic diagram that does not tilt;
Fig. 3 B is the reading device of optic disk machine of a demonstration according to preferred embodiment of the present invention, and wherein optical read head is the synoptic diagram that tilts;
Fig. 3 C is the reading device of optic disk machine of a demonstration according to preferred embodiment of the present invention, and wherein optical read head is to revise the synoptic diagram of inclination;
Fig. 4 is the block diagram of a demonstration according to the reading device of optic disk machine of another preferred embodiment of the present invention; And
Fig. 5 is the control method process flow diagram of a demonstration according to the reading device of optic disk machine of preferred embodiment of the present invention.
11: optical storage media 121: plummer
122: rotating shaft motor 131: optically read headstock
132: tooth bar 133: slide rail
141: optical read head 142: voice coil motor
151: seek rail motor 152: gear
161: rf processor 162: the numerical digit signal processor
163: drive wafer 171: signal
172: trace rub-out signal 173: servosignal
174: trace output signal 175: feeding motor output signal
Reflected light 182:-1 rank, 181:0 rank reflected light
183:1 rank reflected light 21: optical read head
22: optical storage media 23: voice coil motor
24: seek rail motor 251: plummer
252: rotating shaft motor 261: optically read headstock
262: slide rail 263: tooth bar
264: gear 31: RF processing unit
32: mnemon 33: the numerical digit signal processing unit
331: Analogue-to-digital Converter (ADC) 332: trace is handled module
333: seek rail and select module 334: the numerical digit analogy converter
335: multiplexer 336: seek rail and handle module
337: seek rail and handle module 34: low-pass filter
35: drive processing unit 41: signal
42: trace rub-out signal 43: servosignal
44: trace output signal 45: feeding motor output signal
46: seek rail and handle module 47: seek rail and handle module
P1: position p2: position
P3: position t1: track
T2: track S01-S08: the control method of reading device of optic disk machine
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to reading device of optic disk machine and its embodiment of control method, structure, method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Hereinafter with reference to correlative type, reading device of optic disk machine and control method thereof according to preferred embodiment of the present invention are described.
Please refer to shown in Figure 2, reading device of optic disk machine according to preferred embodiment of the present invention, it is to be used for that an optical read head 21 reads an optical storage media 22 and when producing a signal 41, adjust the angle of optical read head 21 by a voice coil motor 23 (coil motor) perpendicular to optical storage media 22, and by one seek rail motor 24 (sled motor) along optical storage media 22 move radially optical read head 21, it comprises a RF processing unit 31, one mnemon 32, one numerical digit signal processing unit 33, one low-pass filter 34 and one drives processing unit 35.RF processing unit 31, numerical digit signal processing unit 33, low-pass filter 34, drive processing unit 35, voice coil motor 23, seek rail motor 24 and optical read head 21 is to form a feedback control loop.
RF processing unit 31 is to amplify the signal 41 that optical read head 21 read and produce a trace rub-out signal 42 and a servosignal 43.Mnemon 32 is that storage is sought rail processing module 46 and sought rail processing module 47, selects the suitable rail processing module of seeking to handle for numerical digit signal processing unit 33.Numerical digit signal processing unit 33 is to have an Analogue-to-digital Converter (ADC) 331, a trace (tracking) to handle module 332, and seek rail (sled) and select a module 333 and a numerical digit analogy converter 334, and wherein Analogue-to-digital Converter (ADC) 331 is that trace rub-out signal 42 and servosignal 43 are converted to the numerical digit signal by anaiog signal.It is to handle trace rub-out signal 42 and produce a trace output signal 44 that trace is handled module 332, seeking rail selects module 333 to remember in the unit 32 certainly according to servosignal 43, handle module 46 and handle module 47 and select the two being carried out in the lump wherein by seeking rail, to handle trace output signal 44 and to produce a feeding motor output signal 45 with seeking rail.Numerical digit analogy converter 334 is to be anaiog signal with trace output signal 44 and feeding motor output signal 45 by the numerical digit conversion of signals.Low-pass filter 34 is the high-frequency signals in filtering trace output signal 44 and the feeding motor output signal 45.Driving processing unit 35 is the starts that drive voice coil motor 23 respectively and seek rail motor 24 according to trace output signal 44 and feeding motor output signal 45.
Fig. 3 A to Fig. 3 C is the specific embodiment of present embodiment, in Fig. 3 A to Fig. 3 C, optical storage media 22 is to be placed on the plummer 251 (optical storage media 22 in figure only zone, display part), and by rotating shaft motor 252 driven rotary optical storage medias 22, optical read head 21 is installed on the optically read headstock 261, and optical read head 21 is to send laser to optical storage media 22 and be received from optical storage media 22 laser light reflected to carry out the access of data.Optically read headstock 261 is to be slidedly arranged on a slide rail 262, and connects a tooth bar 263, and tooth bar 263 is and gear 264 engagement, and seeking rail motor 24 is driven gear 264 rotations, makes optically read headstock 261 moving radially at slide rail 262 upper edge optical storage medias 22.Voice coil motor 23 is to be arranged at optically read headstock 261, and it is to adjust the angle of optical read head 21 perpendicular to optical storage media 22.
In Fig. 3 A, during position p1 under optical read head 21 has moved to track t1, there is not the angle of inclination between optical read head 21 and optical storage media 22, optical read head 21 is to focus on track t1 (as shown in phantom in FIG.).Aforesaid RF processing unit 31 and Analogue-to-digital Converter (ADC) 331 are handled after trace rub-out signal 42 and the servosignal 43, and trace rub-out signal 42 is to handle module 332 via trace to handle back generation trace output signal 44.On the other hand, owing to do not have the angle of inclination between optical read head 21 and optical storage media 22, therefore the value of servosignal 43 is not more than a threshold value T, seeking rail selection module 333 is to seek rail according to servosignal 43 from the middle selection of remembering unit 32 to handle module 46, and carry out and seek rail processing module 46 processing trace output signals 44 generation feeding motor output signals 45, driving processing unit 35 is to control voice coil motor 23 respectively and seek rail motor 24 according to trace output signal 44 and the feeding motor output signal 45 of this moment, guarantees that optical read head 21 remains on the position p1 under the track t1.
In Fig. 3 B, when optical read head 21 has moved to position p2 under the track t1, have an angle of inclination between optical read head 21 and optical storage media 22, optical read head 21 is to focus on track t1 (as shown in phantom in FIG.).Behind aforesaid RF processing unit 31 and Analogue-to-digital Converter (ADC) 331 processing trace rub-out signals 42 and the servosignal 43, trace rub-out signal 42 is to handle module 332 via trace to handle back generation trace output signals 44.On the other hand, owing to have the angle of inclination between optical read head 21 and optical storage media 22, therefore the value of servosignal 43 is greater than a threshold value T, seeking rail selection module 333 is to seek rail according to servosignal 43 from the middle selection of remembering unit 32 to handle module 47, and carry out and seek rail processing module 47 processing trace output signals 44 generation feeding motor output signals 45, driving processing unit 35 is that rail motor 24 is sought in 45 controls according to feeding this moment motor output signal, makes optical read head 21 move to the position p3 (shown in Fig. 3 C) under the track t1.
In Fig. 3 C, during position p3 under optical read head 21 moves to track t1, the angle of inclination of optical read head 21 then can not focus on track t2 but not track t1 (as dotted portion among the figure) if change, therefore voice coil motor 23 must be adjusted the angle of inclination of optical read head 21, makes optical read head 21 focus on track t1 (as center line part among the figure).So after the increase of the value of the trace rub-out signal 42 of this moment, the value of handling the trace output signal 44 that module 332 produces via trace also with increase, and then the start of driving voice coil motor 23, make the angle of inclination of optical read head 21 be eliminated and correctly focus on track t1.
Please refer to shown in Figure 4, reading device of optic disk machine according to another preferred embodiment of the present invention, it is to be used for that an optical read head 21 reads an optical storage media 22 and when producing a signal 41, adjust the angle of optical read head 21 by a voice coil motor 23 perpendicular to optical storage media 22, and by one seek rail motor 24 along optical storage media 22 move radially optical read head 21, comprise a RF processing unit 31, a numerical digit signal processing unit 33, a low-pass filter 34 and and drive processing unit 35.Wherein numerical digit signal processing unit 33 is to comprise an Analogue-to-digital Converter (ADC) 331, a trace to handle module 332, a multiplexer 335, and seek rail and handle module 336, and seek rail and handle a module 337 and a numerical digit analogy converter 334.RF processing unit 31, numerical digit signal processing unit 33, low-pass filter 34, drive processing unit 35, voice coil motor 23, seek rail motor 24 and optical read head 21 is to form a feedback control loop.
The function that RF processing unit 31 in the present embodiment, Analogue-to-digital Converter (ADC) 331, trace are handled module 332, low-pass filter 34 and driven processing unit 35 and feature be with the described embodiment of Fig. 2 in components identical identical, so repeat no more.Multiplexer 335 is to handle module 336 and seek rail and handle module 337 and select the two one handling trace output signal 44 and producing a feeding motor output signal 45 wherein from seeking rail according to servosignal 43.Multiplexer 335 in the present embodiment, seek rail and handle module 336 to handle module 337 be respectively that the rail of seeking in the specific embodiment with Fig. 3 A and Fig. 3 B is selected module 333, sought rail and handle module 46 and seek rail processing module 47 effects identical with seeking rail, also the specific embodiment with Fig. 3 A to Fig. 3 C is identical so formula is put in the concrete enforcement of present embodiment, so repeat no more.
Please refer to shown in Figure 5, control method according to the reading device of optic disk machine of another preferred embodiment of the present invention, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head perpendicular to this optical storage media, and along this optical read head that moves radially of this optical storage media, comprise amplifying signal and produce a trace rub-out signal and a servosignal, and conversion trace rub-out signal and servosignal are the numerical digit signal, handle the trace rub-out signal then and produce a trace output signal, then select one to seek rail processing module according to servosignal, and carry out and seek rail processing module to handle the trace output signal and to produce a feeding motor output signal, change the trace output signal then and feeding motor output signal is an anaiog signal, and the high-frequency signal in filtering trace output signal and the feeding motor output signal, and drive voice coil motor and the action of seeking the rail motor respectively according to trace output signal and feeding motor output signal.
The control method of the reading device of optic disk machine in the present embodiment was discussed in the specific embodiment of embodiment, Fig. 3 A to Fig. 3 C of Fig. 2, so repeat no more.
In sum, because of according to reading device of optic disk machine of the present invention and control method thereof being has at least one rail of seeking to handle module processing trace rub-out signal and servosignal, so can suitably adjust the inclined degree of optical read head.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. reading device of optic disk machine, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head by a voice coil motor perpendicular to this optical storage media, and seek move radially this optical read head of rail motor by one along this optical storage media, it is characterized in that it comprises:
One RF processing unit, it is to amplify this signal and produce a trace rub-out signal and a servosignal;
One mnemon, it is to store a plurality of rails of seeking to handle module;
One numerical digit signal processing unit, it is to have trace processing module and to seek rail selection module, it is to handle this trace rub-out signal and produce a trace output signal that this trace is handled module, this seeks rail selection module is to select the described rail of seeking to handle one of module in this mnemon according to this servosignal, and carries out this and seek rail processing module to handle this trace output signal and to produce a feeding motor output signal; And
One drives processing unit, and it is to drive this voice coil motor respectively according to this trace output signal and this feeding motor output signal to seek the action of rail motor with this.
2. reading device of optic disk machine according to claim 1 is characterized in that wherein said RF processing unit, this numerical digit signal processing unit, this driving processing unit, this voice coil motor, this seeks the rail motor and this optical read head is to form a feedback control loop.
3. reading device of optic disk machine according to claim 1 is characterized in that also comprising:
One low-pass filter, it is the high-frequency signal in this trace output signal of filtering and this feeding motor output signal.
4. reading device of optic disk machine according to claim 1 is characterized in that wherein said numerical digit signal processing unit also comprises:
One Analogue-to-digital Converter (ADC), it is that this trace rub-out signal and this servosignal are converted to the numerical digit signal by anaiog signal; And
One numerical digit analogy converter, it is to be anaiog signal with this trace output signal and this feeding motor output signal by the numerical digit conversion of signals.
5. reading device of optic disk machine, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head by a voice coil motor perpendicular to this optical storage media, and seek move radially this optical read head of rail motor by one along this optical storage media, it is characterized in that it comprises:
One RF processing unit, it is to amplify this signal and produce a trace rub-out signal and a servosignal;
One numerical digit signal processing unit, it is to have a trace to handle module, an a plurality of rail processing module and multiplexer sought, it is to handle this trace rub-out signal and produce a trace output signal that this trace is handled module, each described rail processing module of seeking is to handle this trace output signal and produce a feeding motor output signal, and this multiplexer is to select the described rail of seeking to handle one of module according to this servosignal; And
One drives processing unit, and it is to drive this voice coil motor respectively according to this trace output signal and this feeding motor output signal to seek the action of rail motor with this.
6. reading device of optic disk machine according to claim 5 is characterized in that wherein said RF processing unit, this numerical digit signal processing unit, this driving processing unit, this voice coil motor, this seeks the rail motor and this optical read head is to form a feedback control loop.
7. reading device of optic disk machine according to claim 5 is characterized in that also comprising:
One low-pass filter, it is the high-frequency signal in this trace output signal of filtering and this feeding motor output signal.
8. reading device of optic disk machine according to claim 5 is characterized in that wherein said numerical digit signal processing unit also comprises:
One Analogue-to-digital Converter (ADC), it is that this trace rub-out signal and this servosignal are converted to the numerical digit signal by anaiog signal; And
One numerical digit analogy converter, it is to be anaiog signal with this trace output signal and this feeding motor output signal by the numerical digit conversion of signals.
9. the control method of a reading device of optic disk machine, it is to be used for that an optical read head reads an optical storage media and when producing a signal, adjust the angle of this optical read head perpendicular to this optical storage media, and, it is characterized in that it comprises along this optical read head that moves radially of this optical storage media:
Amplify this signal and produce a trace rub-out signal and a servosignal;
Handle this trace rub-out signal and produce a trace output signal;
Select one to seek rail processing module according to this servosignal;
Carry out this and seek rail processing module to handle this trace output signal and to produce a feeding motor output signal; And
According to this trace output signal and this feeding motor output signal drives this voice coil motor respectively and this seeks the action of rail motor.
10. the control method of reading device of optic disk machine according to claim 9, its feature is also comprising:
High-frequency signal in this trace output signal of filtering and this feeding motor output signal; Changing this trace rub-out signal and this servosignal is the numerical digit signal; And
Change this trace output signal and this feeding motor output signal is an anaiog signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410095549XA CN100397502C (en) | 2004-11-29 | 2004-11-29 | Reading device of optic disk machine and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410095549XA CN100397502C (en) | 2004-11-29 | 2004-11-29 | Reading device of optic disk machine and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1783248A CN1783248A (en) | 2006-06-07 |
| CN100397502C true CN100397502C (en) | 2008-06-25 |
Family
ID=36773328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410095549XA Active CN100397502C (en) | 2004-11-29 | 2004-11-29 | Reading device of optic disk machine and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397502C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682307A (en) * | 1991-11-06 | 1997-10-28 | Sony Corporation | Circuits and methods for controlling a tracking actuator of an optical disk player |
| US6414921B1 (en) * | 1998-12-11 | 2002-07-02 | Lg Electronics Inc. | Servo control apparatus and method for compensating for axial vibration of an optical disk |
| US6693861B1 (en) * | 1999-01-23 | 2004-02-17 | Lg Electronics Inc. | Method and apparatus for servo control using stepping motor as sled motor |
| CN1484828A (en) * | 2000-11-08 | 2004-03-24 | �ֹ��� | Optica disk unit and control method therefor |
| CN1485826A (en) * | 2002-09-24 | 2004-03-31 | 联发科技股份有限公司 | Optical disk machine and its Servo control system and optical path modification servo control system |
| US20040136282A1 (en) * | 2003-01-08 | 2004-07-15 | Chih-Yuan Chen | Method for calibrating center error offset in an optical drive and control system capable of calibrating center error offset |
-
2004
- 2004-11-29 CN CNB200410095549XA patent/CN100397502C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682307A (en) * | 1991-11-06 | 1997-10-28 | Sony Corporation | Circuits and methods for controlling a tracking actuator of an optical disk player |
| US6414921B1 (en) * | 1998-12-11 | 2002-07-02 | Lg Electronics Inc. | Servo control apparatus and method for compensating for axial vibration of an optical disk |
| US6693861B1 (en) * | 1999-01-23 | 2004-02-17 | Lg Electronics Inc. | Method and apparatus for servo control using stepping motor as sled motor |
| CN1484828A (en) * | 2000-11-08 | 2004-03-24 | �ֹ��� | Optica disk unit and control method therefor |
| CN1485826A (en) * | 2002-09-24 | 2004-03-31 | 联发科技股份有限公司 | Optical disk machine and its Servo control system and optical path modification servo control system |
| US20040136282A1 (en) * | 2003-01-08 | 2004-07-15 | Chih-Yuan Chen | Method for calibrating center error offset in an optical drive and control system capable of calibrating center error offset |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1783248A (en) | 2006-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1184622C (en) | Optical information reproduction device and signal processing circuit used therein | |
| CN1244006A (en) | Device and method for optically recording and reproducing | |
| CN1260563A (en) | Disk-driving apparatus | |
| CN101046988A (en) | Medium, apparatus, and method of recording optical information | |
| CN1147841C (en) | Optical disk for information recording regeneration and information recording regenerator using the same | |
| CN1679092A (en) | Optical storage device and control method | |
| CN100397502C (en) | Reading device of optic disk machine and its control method | |
| CN1331121C (en) | Control circuit for optical disk apparatus and method of controlling record/playback of optical disk | |
| US20070195661A1 (en) | Power down apparatus for optical data drive | |
| CN1975886A (en) | Information reproducing apparatus | |
| CN1082221C (en) | Tracking servo circuit | |
| CN1142655A (en) | Data recording and displaying device with changeable rotation rate and data clock frequency | |
| CN1118462A (en) | Servo apparatus | |
| CN1219730A (en) | Optical disc recording and reproducing apparatus | |
| CN1321412C (en) | Automatic correction system for optical incident angle | |
| CN101685646B (en) | Optical disk device and optical disk recording/reproducing apparatus | |
| CN1643590B (en) | Servo-controlling method of an optical disk apparatus | |
| TWI298880B (en) | Reading device of an optical drive and its control method | |
| JP2569628B2 (en) | Optical disk drive | |
| CN1975884B (en) | Optical disk recording, reproducing device and its seek control method | |
| JP2827238B2 (en) | Optical disk recording and playback device | |
| CN1280365A (en) | Disc speed controller | |
| US5583841A (en) | Apparatus for improved search on information storage member rotating at constant linear velocity | |
| CN101359488B (en) | Optical-information reproducing system | |
| JP2568705B2 (en) | Optical disk search device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |