CN102682804B - Compact disk reading device - Google Patents
Compact disk reading device Download PDFInfo
- Publication number
- CN102682804B CN102682804B CN201110411175.8A CN201110411175A CN102682804B CN 102682804 B CN102682804 B CN 102682804B CN 201110411175 A CN201110411175 A CN 201110411175A CN 102682804 B CN102682804 B CN 102682804B
- Authority
- CN
- China
- Prior art keywords
- microscope camera
- compact disk
- camera
- bracket
- image processor
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Abstract
The invention discloses a compact disk reading device and aims at disclosing the compact disk reading device adopting a camera. The compact disk reading device comprises a bracket, a driving motor, a control circuit and a moving arm, wherein the bracket is connected with the driving motor, the compact disk reading device also comprises a microscope camera, a light source and an image processor, the microscope camera is arranged on the moving arm and can move along the moving arm through control by the control circuit, the image processor is electrically connected with the microscope camera, when a compact disk is placed on the bracket, the shooting direction of the microscope camera is right aligned with the reading surface of the compact disk, and light rays generated by the light sources are uniformly irradiated on the reading surface of the compact disk. The microscope camera shoots the surface of the compact disk, and then, information recorded by a compact disk channel is recognized by adopting the machine vision technology. The compact disk reading device is suitable for reading all compact disks.
Description
Technical field
The present invention relates to a kind of disc accessing, especially relate to a kind of disc accessing adopting camera.
Background technology
The use of laser disc is very general, as DVD, VCD, CD_ROM, DVD_ROM etc.Laser disc is the recording medium of information, and CD-ROM device corresponding is with it the instrument that laser disc information stores and reads.CD is placed on pallet, and pallet has a groove, is convenient to place and fixing CD.Above CD, have a sliding rail, laser and/write head slides in orbit, and for reading not co-orbital information on CD, CD rotates in pallet.Control circuit controls the work of laser head, transfer arm, CD.
Information burning is on CD.The reading (most CD is read-only) of laser disc information is by laser head, and laser is radiated at optical disc surface and records on the rough channel of information.Diffuse reflection is produced, without the place total reflection in hole after having the local laser in hole to irradiate.Laser head has a photosensitive tube, is responsible for receiving these reflected light.Which achieves the object with cd-rom recording of information.Although CD uses very universal at present, wherein contain a lot of hi-tech.Such as laser head will ensure that laser accurately can focus on optical disc surface, but due to CD itself can not be definitely smooth, the CD rotated in the CD course of work fluctuates up and down.And because disk rotation speed is very fast, its speed fluctuated up and down is also very fast.This just requires that laser head has a mechanism, can judge the degree that disc fluctuates up and down, in real time the distance of fine setting laser head and optical disc surface.Such as the capacity of CD is very large now again, can hold more than 10GB information in a CD.And these information are all that the distance between information track is in micron number magnitude, and this precision just requiring laser head track driving laser head to slide thereon also will in micron number magnitude with the information track record of spiral.This is extremely accurate machinery.
CD player such as although China produce DVD player in a large number, DVD_ROM, laser head technology still rests in Japanese staff, and China is assembling just, does not grasp core technology.
State Intellectual Property Office of middle Chinese republic discloses on April 5th, 2006 patent documentation that publication number is CN1755828A, title is CD-ROM drive, and the scheme described in literary composition comprises: a casing, has a bleeder vent; One optical read head, is arranged at the inside of casing, for reading the data on a disc; One circuit board, be arranged at the bottom surface of casing, circuit board has one drive circuit, as a region of circuit board; One separating part, is arranged at the driving circuit part of proximate circuitry plate, and for separating driving circuit and optical read head, separating part has a cavity, is communicated with bleeder vent.Optical read head in this scheme is still traditional laser class read head, does not have substantial change.Laser read head once can only read a channel on CD, is limited to the rotating speed of CD, and CD-ROM drive reading speed is difficult to there is larger lifting.
Summary of the invention
The present invention's laser read head mainly solved existing for prior art once can only read the technical matters of a channel, provides a kind of novel disc accessing that simultaneously can read many channels.
The present invention is directed to that above-mentioned technical matters mainly solved by following technical proposals: a kind of disc accessing, comprise bracket, CD-ROM drive motor, control circuit and transfer arm, described bracket is connected with CD-ROM drive motor, also comprise microscope camera, light source and image processor, described microscope camera is arranged on transfer arm and also can moves along transfer arm under control circuit controls, and described image processor is electrically connected with described microscope camera; When CD is placed on bracket, the shooting direction of microscope camera is just to optical disk reading face, and described light source produces uniform light and is irradiated on optical disk reading face.
As preferably, microscope camera can read multiple channel information simultaneously, and is stitched together by multiple channel information by image processor, makes to read dish speed and reaches and be multiple times than conventional optical disc machine.
As preferably, described microscope camera is the microscope camera of adjustable focal length, and the speed of focusing can keep focus can remain in the camera lens visual field, does not need to resemble laser and/write head to focus on optical disc surface exactly.
As preferably, described light source is LED light emitting diode, and itself and optical disk reading face have certain pitch angle, is convenient to highlight the concavo-convex image of disc channel.
As preferably, described microscope camera is fixed on transportable transfer arm, and the precision of microscope camera movement is the width of more than 10 channels, and this requirement is far below the precision of laser and/write head
The focus of microscope camera, not necessarily will exactly in camera median line in the visual field of camera.
The present invention adopts a microscope camera as information extraction utility.Its pickup light panel surface, then by adopting the information of machine vision technique identification CD channel record.It can be seen, this programme has got around this difficult problem of laser technology, alternatively realizes the reading of laser disc recorded information.This programme has oneself advantage in the accurate mobile problem of process slide rail and information read head focus issues:
The first, because the viewfinder range of camera is wider, not only only comprise a track, multiple track can be occurred simultaneously in the viewfinder range of camera.So just make the precision of slide rail not need as laser mode accurate, thus reduce the dependence to precision optical machinery.
The second, as shown in Figure 2, because the visual field of camera is wider, need not be very strict to the requirement focused on, as shown in figure, it is unpunctual to focus in the vertical direction, and focusing aside may be just accurately.This makes to have in camera view and focuses on part accurately.Utilize this part just can clearly sense data.The position that the fluctuation up and down of laser disc causes the inaccurate problem of focus point can carry out selective focus point by software is solved, thus the mechanical problem of precision is transformed into software issue.This reduces will be closely servo-actuated together with disc to read head requirement.
3rd, because camera can read multiple channel simultaneously, so adopt camera to do the reading information that read head can realize multiple velocity.
Accompanying drawing explanation
Fig. 1 is a kind of inner structure schematic diagram of the present invention;
Fig. 2 is a kind of focal length schematic diagram of the present invention;
In figure: 1, transfer arm, 2, microscope camera, 3, CD, 4, bracket.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of disc accessing of the present embodiment, comprise bracket 4, CD-ROM drive motor, control circuit and transfer arm 1, bracket is connected with CD-ROM drive motor, also comprise microscope camera 2, light source and image processor, inner structure as shown in Figure 1, microscope camera is arranged on transfer arm and also can moves along transfer arm under control circuit controls, and image processor is electrically connected with microscope camera; When CD 3 is placed on bracket, the shooting direction of microscope camera is just to optical disk reading face, and the uniform light of light source is irradiated on optical disk reading face.Microscope camera is the magnification at high multiple camera lens of adjustable focal length, and light source is LED light emitting diode.Light source and optical disk reading face have certain pitch angle.Microscope camera is fixed on transportable transfer arm, and the precision of microscope camera movement is the width of more than 10 channels.
Microscope camera is by CD channel shooting image transfer to image processor, and image processor reads out through process the data that CD stores.Because microscope camera can read many channels simultaneously, and by image processor, multiple channel information is stitched together, so the reading speed of many times can be had under same CD speed, or only need the rotating speed much smaller than laser CD-ROM drive just can reach or exceed the reading speed of laser CD-ROM drive.Microscope camera is high-speed camera head, possesses the shooting speed of more than 10000 frames per second.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the term such as microscope camera, transfer arm herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (4)
1. a disc accessing, comprise bracket, CD-ROM drive motor, control circuit and transfer arm, described bracket is connected with CD-ROM drive motor, it is characterized in that, also comprise microscope camera, light source and image processor, described microscope camera is arranged on transfer arm and also can moves along transfer arm under control circuit controls, and described image processor is electrically connected with described microscope camera; When CD is placed on bracket, the shooting direction of microscope camera is just to optical disk reading face, and described light source produces uniform light and is irradiated on optical disk reading face; Described light source is LED light emitting diode, and has certain pitch angle with optical disk reading face.
2. disc accessing according to claim 1, is characterized in that, described microscope camera can read multiple channel information simultaneously, and is stitched together by multiple channel information by image processor.
3. disc accessing according to claim 1 and 2, is characterized in that, described microscope camera is the microscope camera of adjustable focal length.
4. disc accessing according to claim 1, is characterized in that, described microscope camera is fixed on transportable transfer arm, and the precision of microscope camera movement is the width of more than 10 channels.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110411175.8A CN102682804B (en) | 2011-12-12 | 2011-12-12 | Compact disk reading device |
| PCT/CN2012/085788 WO2013086940A1 (en) | 2011-12-12 | 2012-12-04 | Compact disk reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110411175.8A CN102682804B (en) | 2011-12-12 | 2011-12-12 | Compact disk reading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102682804A CN102682804A (en) | 2012-09-19 |
| CN102682804B true CN102682804B (en) | 2015-05-13 |
Family
ID=46814606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110411175.8A Expired - Fee Related CN102682804B (en) | 2011-12-12 | 2011-12-12 | Compact disk reading device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102682804B (en) |
| WO (1) | WO2013086940A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682804B (en) * | 2011-12-12 | 2015-05-13 | 苏州科雷芯电子科技有限公司 | Compact disk reading device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0354834A2 (en) * | 1988-08-06 | 1990-02-14 | Mitsubishi Denki Kabushiki Kaisha | Surface defect inspection apparatus |
| CN1734656A (en) * | 2004-06-04 | 2006-02-15 | 索尼株式会社 | Disc drive apparatus, disc drive unit and optical pickup device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4578779B2 (en) * | 2003-02-25 | 2010-11-10 | 富士電機デバイステクノロジー株式会社 | Magnetic transfer method for magnetic recording medium |
| CN202034034U (en) * | 2010-11-01 | 2011-11-09 | 浙江师范大学 | Large field of view digital hologram recording device |
| CN102035834B (en) * | 2010-12-11 | 2013-06-05 | 常州达奇医疗科技有限公司 | Remote picture reading system for performing remote network operation of microscope |
| CN102682804B (en) * | 2011-12-12 | 2015-05-13 | 苏州科雷芯电子科技有限公司 | Compact disk reading device |
-
2011
- 2011-12-12 CN CN201110411175.8A patent/CN102682804B/en not_active Expired - Fee Related
-
2012
- 2012-12-04 WO PCT/CN2012/085788 patent/WO2013086940A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0354834A2 (en) * | 1988-08-06 | 1990-02-14 | Mitsubishi Denki Kabushiki Kaisha | Surface defect inspection apparatus |
| CN1734656A (en) * | 2004-06-04 | 2006-02-15 | 索尼株式会社 | Disc drive apparatus, disc drive unit and optical pickup device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102682804A (en) | 2012-09-19 |
| WO2013086940A1 (en) | 2013-06-20 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20191212 |