CN101169961A

CN101169961A - Optical disk set drive

Info

Publication number: CN101169961A
Application number: CNA2007101905487A
Authority: CN
Inventors: 宋余庆; 陈健美; 程鹏
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2008-04-30
Anticipated expiration: 2027-11-30
Also published as: CN101169961B

Abstract

The invention discloses an optical disk set driver based on a server or a workstation, which comprises a read-write device arranged in a cartridge, an optical disk bracket, and a control circuit board; wherein a hung support is fixed on one side of the optical disk bracket, the cartridge is partitioned by the multilayer hung support and an optical disk rotation stage on the hung support into a plurality of layers, one read-write device and an optical head trolley and drive component thereof are arranged on each layer, the control circuit board is arranged on the bottom of the cartridge, and the drive component is connected with the bottom circuit board through wires. Based on optical disk read-write manner, the invention introduces multi-optical head access and step motor positioning technique to effectively reduce address time, and the driver and the optical disk set cartridge are combined and can be connected with a computer through a standard interface. The invention is a multifunctional and high-efficiency novel optical memory device, capable of achieving simple and rapid large-capacity data access and organization.

Description

Optical disk set drive

Technical field

The present invention relates to a kind of optical storage apparatus, particularly a kind of multiple optical disk system drive based on server or workstation.

Background technology

Traditional CD drive mainly is made up of laser beam modulation head assembly, CD group carriage, control circuit board, laser head mainly is responsible for data write, CD holder is an optical disk carrier, control circuit is responsible for controlling each parts collaborative work, CD driver can only a built-in CD, when intact one of read/write, must manually change dish, can not adapt to the requirement of mass data storage.Though CD tower of the prior art can solve the requirement of mass data storage, be not easy to carry out batch and change the dish operation.

Summary of the invention

In order to overcome the deficiency of normal optical disk driver and CD tower, the present invention proposes a kind of optical disk set drive and adopts new CD organizational form, can realize simultaneously that the parallel of many CDs read, to make things convenient for the data organization of high-capacity data access and ultra-large type medium.

The technical solution used in the present invention is: be included in read-write equipment, CD holder and control circuit board are installed in the box body, at the fixing suspension holdfast of CD holder one side, described box body is separated into multilayer by the CD universal stage on multilayer suspension holdfast and the suspension holdfast, a read-write equipment and bare headed dolly and driver part thereof are installed on every layer, in the box body bottom control circuit board is installed, driver part is connected with base circuit board by lead.

The present invention is on the CD read and write mode, how bare headed access and step motor location technology have been introduced, effectively reduce the addressing time, driver and CD group box are combined, can be connected with computing machine by standard interface, be a kind of multi-functional, high efficiency novel optical memory device, can realize simple and direct, high-capacity data access and tissue fast.

Description of drawings

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:

Fig. 1 is a contour structures synoptic diagram of the present invention;

Fig. 2 is the sectional structure chart of individual layer box body 1 among Fig. 1;

Fig. 3 is the drives structure figure that CD holder 2 is done the turnover motion among Fig. 2;

Fig. 4 is the drives structure enlarged diagram that CD universal stage 9 moves up and down among Fig. 2;

Fig. 5 is the johning knot composition of bare headed dolly 8 among Fig. 2;

Fig. 6 is a fundamental diagram of the present invention.

Embodiment

As shown in Figure 1, the outermost box body 1 of the present invention can be installed on the special purpose workstation shell, the inner space of box body 1 is separated into multilayer by a plurality of suspension holdfasts 7, CD universal stage 9 is installed on the suspension holdfast 7, at CD holder 2 one sides fixedly suspension holdfast 7 and CD universal stage 9, at every layer a read-write equipment 6 and bare headed dolly 8 and driver part 5 thereof are installed, in box body 1 bottom control circuit board 10 is installed, driver part 5 is connected with base circuit board 10 by lead.

Shown in Fig. 2,3, electric mechanical parts such as CD holder 2, CD holder chute 3, suspension holdfast 7, CD universal stage 9, suspension holdfast axle 11, bare headed dolly 8 and CD group box conveying mechanism, driver buffer zone, intelligence control circuit plate are set every layer of box body 1.The both sides of described CD holder 2 and carriage chute 3 are fixed together in mode movingly, the driven wheel 13 that is used for driving CD holder 2 meshes together with the tooth bar 40 that is compressed on the plastic pallet, when driven wheel 13 rotations, pallet stretches out or shrinks along chute 3 directions.Drive motor 39 is wired on the circuit board 10 on the base.When wishing that CD holder 2 is stretched out from driver, carriage direct-drive motor 39 drives plastics small umbrella gear 38 rotations on it, is taken turns by the big umbrella shape of small umbrella gear 38 frictions and presses rotation counterclockwise, realizes that rotation alters course and the first order is slowed down; With gamp No. 2 gears 37 of No. 1 gear 41 drives just as axle, No. 2 gears 37 are rotated in the direction of the clock, realize second level deceleration.No. 3 gears 42 and No. 2 gear 37 coaxial being fixed together when No. 3 gears 42 rotate in the direction of the clock, drive No. 4 gears 36 again by rotation counterclockwise, realize that the third level slows down.Driven wheel 13 and No. 4 gears 36 also are fixed on the axle, and diameter is identical, therefore, driven wheel 13 is also by rotation counterclockwise, and driven wheel 13 be compressed on plastic pallet tooth bar 40 and mesh together, therefore when driven wheel 13 rotates by counter clockwise direction, promote CD holder 2 and from optical disk set drive, stretch out; When wishing CD holder 2, only need to change pallet drive motor 39 sense of rotation and get final product from the outside withdrawal of driver.

Fixing disc universal stage 9 on suspension holdfast 7, as shown in Figure 4, CD universal stage 9 is used to drive the CD rotation, the main shaft 31 stationary fit modes of the center pit of CD universal stage 9 and spindle motor 30 are fixed together, a taper iron cover 34 is arranged above, with two screws taper iron cover 34 and CD universal stage 9 are fixed together, mounting spring 32 between CD universal stage 9 and taper iron cover 34, the center pit of CD universal stage 9 and taper iron cover 34 is passed at the top of main shaft 31, fix a magnet 35 at the top of main shaft 31, on CD universal stage 9,, an armature 45 is installed on contact roller 46 near a contact roller 46.When disc 33 is sent into CD holder 2 in the process of driver, to collide for preventing disc 33 and bare headed object lens, this moment, CD universal stage 9 was done as a wholely to be reduced to the position that is lower than CD holder 2, and kept this low invariant position.After CD holder 2 moves on to final position in the driver, shaven head and CD universal stage 9 are under the drive of CD loading and unloading body, beginning is to moving perpendicular to CD holder 2 direction of motion, then the main axis rotation platform pierces into the center holes for clamping of CD, along with CD universal stage 9 further puts in cd center hole, CD universal stage 9 lifts disc 33 from pallet, be sent to top ring flange 47, ring flange 47 is fixed on the box body 1, contact roller 46 is installed on the superincumbent ring flange 47, last ring flange 47 and CD universal stage 9 clamp discs, thereby have realized the loading of discs 33.At unloaded state, for disc 33 and CD universal stage 9 are adjacent to, after disc 33 is sent into driver by CD holder 22, spiral turntable 9 and spindle motor 30 of overall optical moves up together, contact with the last plastics contact roller 46 on being positioned at CD universal stage 9, circular armature 45 is housed on contact roller 46, magnet 35 adhesives on this circle armature 45 and the following Pan Tai that is positioned at it, thus discs 33 is pressed on the Pan Tai.

Shown in Fig. 2,5, the present invention adopts ide interface 15 to be connected with computing machine, sets up the CD archives on computers, by computing machine according to the searching and locating of optical disc identified control CD, and by the CD in the computing machine read write drive.The core component of read-write equipment 6 is a laser head, form by many head systems, read-write equipment 6 is located at bare headed dolly 8, shaven head dolly 8 is socketed on the suspension holdfast axle 11, and bare headed dolly 8 drives read-write equipment 6 by step motor 14 and the control of spiral screw rod transmission gear and slides before and after the CD radial direction.Shaven head of the present invention, bare headed dolly and CD-ROM drive motor 14 are responsible for the corresponding CD of read-write as a relatively independent optical pickup units, and shaven head is fixed on the bare headed dolly 8.Shaven head mainly is made up of generating laser 19, light path system, photodetector 18 and fixed support.Generating laser 19 is used to produce laser beam, penetrates on discs 33 through obtaining superfine light beam behind the light path system, and discs 33 is got back to beam reflection on the photodetector 18 of shaven head again; Reflective mirror 23 and semi-permeable mirror 26 are installed on the bare headed dolly 8 and are constituted light path system.The openings at one side of shaven head dolly 8 is sentenced movingly mode and is stuck in and smoothly has on the guiding slide bar 17, and another side has two circular holes, and circular hole is wider than a pitch, and metal worm screw 24 passes this two holes, and is mode movingly.Guiding slide bar 17 and metal worm screw 24 parallel and levels.Elastoplast presses fork 25 to straddle on the screw thread of worm screw 24; when rotating with the driven by motor worm screw 24 of traversing; can promote plastics presses fork 25 to move to the spindle motor direction; and plastics press fork 25 and bare headed dolly 8 bases to fix; when bare headed dolly 8 blocks can not be mobile the time for a certain reason; because plastics are pressed the elastic deformation of fork 25, make worm screw 24 screw threads and plastics press fork 25 to skid, thereby protect bare headed mobile motor not burnt out.When carrying out read-write operation, bare headed dolly 8 moves along disc radial direction.In order to control the action between each optical pickup units, use 21 controls of reader/writer coordination device and drive a plurality of optical pickup units, make their co-ordinations.Reader/writer coordination device 21 links to each other with optical pickup units by signal wire 22, and when the user read the appointment data of optical disk, main frame sent instruction to reader/writer coordination device 21, and reader/writer coordination device 21 drives the optical pickup units work of specifying.Reader/writer coordination device 21 can be according to the quick frequent switches light pickup unit of read-write task.Built-in media detection device 20 in each optical pickup units, this detecting device is used for detecting the type of medium, types results is fed back to the controller that is coupled with detecting device, and the wavelength and the watt level of control generating laser emission light beam are with compatible standard CDs such as read/write CD, CD-R, DVD.

The present invention is a kind of novel multi-use driver, and it can support CD-ROM, CD-R/RW, DVD-ROM, DVD-R, DVD-RW and DVD-RAM form.This optical disk set drive is made up of one or one group of drive unit, and the CD in the CD group box is carried out operations such as read/write.It sets up mapping between CD archives and CD physical location to the CD in the CD group box, by computing machine according to the CD archives and in conjunction with assemblies such as the optical disc apparatus in the optical disk set drive, CD group box conveying mechanism, control circuits, the concrete operations task that proposes according to the user is positioned object optical disc rapidly, carry out read/write operation, operation is finished by transport mechanism for optical disc output CD group box.

Be illustrated in figure 6 as the principle of work block diagram of optical disk set drive, mainly comprise laser head, servocontrol, carriage dress/Unloading Control, digital signal processing, error correction and five realizations of host interface processor part.The laser reading head is as the core component of read-write equipment 6, the read-write part of this driver is made up of many head systems, realization is to the concurrent reading and concurrent writing of CD group, laser head, bare headed dolly 8 and drive motor 14 are as a relatively independent optical pickup units, be responsible for the corresponding CD of read-write, it is started working under the driving of reader/writer coordination device 21.The light beam that the laser head emission is superfine, shine on the information line that CD will read, light beam projects light activated element after CD reflection, with " hole " " bank " conversion of signals that is recorded on the disc 33 is high level and low level, send follow-up signal to amplify and treatment circuit.Servocontrol comprises main axle servo, tracking servo, servo, focus servo traverses; Main axle servo mainly is to allow motor-driven CD universal stage 9 drive CD rotate in the constant linear velocity mode, tracking servo is with the accurate alignment information line of bare headed emitted light beams, traversing servo is to allow bare headed dolly 8 do along disc radial move, and the amasthenic lens of focus servo control shaven head is along moving up and down perpendicular to the disc direction.CD, unload control and drive electronic, rack-and-pinion, dish advances and coil out limit switch etc. by loading, unloading and form, when pressing the button on the panel one time, this moment, bare headed spindle motor supporting mechanism integral body moved down, each suspension holdfast 7 glazing turntable 9 that spirals is broken away from from cd center hole, disc 33 drops on the CD holder 2, under the driving of CD loading, unloading motor, the CD drive outside is stretched out by overall optical disc holder 2 systems then.Digital signal processing: will carry out slicing shaping, synchronous etc. from the radiofrequency signal that comprises numeral that CD reads.Error correction and host interface processor are carried out error correction and serial data are converted to parallel data and are sent to main frame.

Claims

1. optical disk set drive, be included in read-write equipment (6), CD holder (2) and control circuit board (10) are installed in the box body (1), it is characterized in that: at the fixing suspension holdfast (7) of CD holder (2) one sides, described box body (1) is separated into multilayer by the CD universal stage (9) on a plurality of suspension holdfasts (7) and the suspension holdfast (7), a read-write equipment (6) and a bare headed dolly (8) and driver part (5) thereof are installed on every layer, in box body (1) bottom control circuit board (10) is installed, driver part (5) is connected with base circuit board (10) by lead.

2. optical disk set drive according to claim 1 is characterized in that: CD holder (2) is fixed in mode movingly at both sides and carriage chute (3), is fixed on support shaft (11) on the CD holder (2) in supported on both sides suspension holdfast (7); Drive motor (39) on the driver part (5) connects and drive small umbrella gear (38), small umbrella gear (38) engagement large umbrella gear, large umbrella gear meshes No. 1 gear (41) successively, No. 2 gears (37), No. 3 gears (42), No. 4 gears (36) and driven wheel (13), No. 2 gears (37) and coaxial being fixed together of No. 3 gears (42), No. 4 gears (36) and driven wheel (13) be coaxial be fixed together and diameter identical, driven wheel (13) meshes together with the tooth bar (40) that is compressed on the CD holder (2), during the positive and negative rotation of driven wheel (13), the pallet of CD holder (2) stretches out or shrinks along carriage chute (3).

3. optical disk set drive according to claim 2, it is characterized in that: the spindle motor (30) of driver part (5) connects CD universal stage (9) by main shaft (31), on CD universal stage (9), fix a taper iron cover (34), the center pit of CD universal stage (9) and taper iron cover (34) is passed at the top of main shaft (31), fix a magnet (35) at the top of main shaft (31), on CD universal stage (9),, go up an installation armature (45) at contact roller (46) near a contact roller (46).

4. optical disk set drive according to claim 1, it is characterized in that: read-write equipment (6) is made up of many shaven heads, go up installation bare headed dolly (8) at read-write equipment (6), shaven head dolly (8) is socketed on the support shaft (11), at bare headed dolly (8) generating laser (19) and photodetector (18) are installed, go up installation reflective mirror (23) and semi-permeable mirror (26) formation light path at bare headed dolly (8), the openings at one side of shaven head dolly (8) is stuck on the smooth guiding slide bar (17) in mode movingly, another side has two circular holes, there is a metal worm screw (24) gap to pass this two holes, guiding slide bar (17) and the parallel and level of metal worm screw (24), an elastoplast is set presses fork (25) cross-pressure on the screw thread of metal worm screw (24), read-write equipment (6) connects a reader/writer coordination device (21), and bare headed dolly (8) connects the step motor (14) of driver part (5) and drives read-write equipment (6) along the slip of CD radial direction front and back.