CN100365714C - Optical disk apparatus - Google Patents
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- CN100365714C CN100365714C CNB2005100685457A CN200510068545A CN100365714C CN 100365714 C CN100365714 C CN 100365714C CN B2005100685457 A CNB2005100685457 A CN B2005100685457A CN 200510068545 A CN200510068545 A CN 200510068545A CN 100365714 C CN100365714 C CN 100365714C
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Abstract
An optical disk apparatus for controlling two optical pickups in an optimized way in response to operation modes for rotating the optical disk. When receiving a request for seeking one optical pickup from a HOST, a CPU judges whether to move the other optical pickup synchronously to satisfy positional restriction of the two optical pickups. Furthermore, when operating one optical pickup upon, for example, a read request. from the HOST, the CPU judges whether to move the other pickup to follow.
Description
Technical field
The present invention relates to a kind of optical disc apparatus, it writes down and replay data on as the CD of Digital video disc or digital versatile disc by using two optical pickups.
Background technology
Be used to write down and reset (just as the CD spinning solution of the optical disc apparatus of data on the CD of DVD, main axis rotation control method), can use CAV (Constant Angular Velocity) system, this system is according to the distance to cd centre, change the RF frequency, so that the rotation of CD constant speed, and/or using CLV (constant linear velocity) system, this system is according to the rotation that changes main shaft to the distance of cd centre.
Usually, the CLV system can send data on the magnetic track continuously, and the CAV system can visit different magnetic tracks.
In addition, optical disc apparatus can be equipped with two optical pickups, so that write data at a high speed on CD.
Such optical disc apparatus can write data with the speed that doubles the optical disc apparatus that has only an optical pickup.Yet when from the position of cd centre's to two optical pickup distance when identical, the linear velocity of optical pickup is just different so, does not therefore allow to implement the read/write operation of address read extract operation and data in the CLV system.
Therefore, wish a kind of optical disc apparatus that has two optical pickups, it can implement optimal control to each optical pickup in response to the operational mode of CD rotation.
Summary of the invention
One embodiment of the present of invention are exactly a kind of optical disc apparatus of two optical pickups being implemented optimal control in response to the operational mode of CD rotation.
Embodiment relates to a kind ofly can comprise first optical pickup that is used for read/write data on CD and the optical disc apparatus of second optical pickup.
Motor is used for rotary CD, this motor at least in the first area of (i) CD with the operation of first speed and (ii) the second area of CD move with second speed.
This device also has a CD control module, is used to manage the address on the CD, and controls first optical pickup and second optical pickup, so that optical pickup is in address desired on the CD.
This CD control module, at mobile first optical pickup to the seek operation of destination address, position relation according to the described relatively first area of destination address, or correspond respectively to poor between first and second zones of first optical pickup and the second optical pickup position, judge whether second optical pickup is moved to destination address simultaneously with first optical pickup.
Another embodiment of the present invention relates to a kind of first optical pickup that is used for read/write data on CD and optical disc apparatus of second optical pickup of comprising.
Motor is used for rotary CD, this motor at least in the first area of (i) CD with the operation of first speed and (ii) the second area of CD move with second speed.
The CD control module is used to manage the address on the CD, and controls first optical pickup and second optical pickup, so that this optical pickup is in address desired on the CD.
CD rotates with constant linear velocity, and CD control module, move first optical pickup to the seek operation of destination address in seek operation, work as the target area, it is the destination address affiliated area, when regional, second optical pickup is moved to destination address simultaneously with first optical pickup more than one away from the residing zone of second optical pickup.
Another embodiment of the present invention relates to a kind of first optical pickup that is used for read/write data on CD and optical disc apparatus of second optical pickup of comprising.
Motor is used for rotary CD, this motor at least in the first area of (i) CD with the operation of first speed and (ii) the second area of CD move with second speed.
The CD control module is used to manage the address on the CD and controls first optical pickup and second optical pickup, so that this optical pickup is in address desired on the CD.
The CD control module concerns according to the position between first and second optical pickups zone of living in and the described first area, with the address difference that first and second optical pickups are settled respectively, judge whether to move the residing address of first optical pickup to the second optical pickup.
Another embodiment of the present invention relates to a kind of first optical pickup that is used for read/write data on CD and optical disc apparatus of second optical pickup of comprising.
Motor is used for rotary CD, this motor at least in the first area of (i) CD with the operation of first speed and (ii) the second area of CD move with second speed.
CD control module management disc address is also controlled first optical pickup and second optical pickup, so that this optical pickup is in address desired on the CD.When the residing address difference in first and second addresses exceeded first address size, this CD control module moved the residing address of first optical pickup to the second optical pickup.
Description of drawings
These and other objects of the present invention and feature are described in more detail with reference to the accompanying drawings, wherein:
Fig. 1 represents the block scheme according to the embodiment of the configuration of optical disc apparatus of the present invention;
Fig. 2 is the view that is described in the Spin Control under the LCLV pattern;
Fig. 3 represents the block scheme according to the signal processing in the optical disc apparatus of the present invention;
Fig. 4 represents the process flow diagram of the example of synchronous seek operation;
Fig. 5 represents the process flow diagram of second example of synchronous seek operation;
Fig. 6 represents to follow the tracks of the process flow diagram of the example of seek operation; With
Fig. 7 represents to follow the tracks of the process flow diagram of second example of seek operation.
Embodiment
An embodiment according to optical disc apparatus of the present invention is described with reference to the accompanying drawings.
Fig. 1 represents the block scheme of the example of optical disc apparatus configuration.As shown in Figure 1, this optical disc apparatus is by two optical pickup OP0, and OP1 is recording/reproducing data on CD 3.It is configured to comprise CD control module 1 and driver element 2.
Optical pickup OP0 is the embodiment according to first optical pickup of the present invention; Optical pickup OP1 is the embodiment according to second optical pickup of the present invention; CD control module 1 is the embodiment according to light pick-up control module of the present invention and motor control unit.
Explanation is constituted each element of CD control module 1.
The order control CD control module 1 that CPU11 provides via ata interface 12 in response to main frame.
For example, following order (request) is sent from main frame.
(1) drives the request of shutoff
Stop the driving operation of CD 3.
(2) tracking request
Mobile optical pick-up head OP0/OP1 desired position to the CD 3.
(3) read request
From the desired location reading of data of CD 3, and the data that read are sent to main frame.
(4) write request
On the desired location of CD 3, write data.
CPU11 is by the address at RUB value management optical pickup OP0 and OP1 place.The RUB value is the physical data unit, and wherein the address on the CD is divided by predetermined bite, for instance, and 64KB.
CPU11 is also by being called the dina base administration optical pickup OP0 of Band, the position of OP1 on CD.Band is the data field, and address is wherein distributed every 2048RUBs in order from cd centre.Just, with the address of software administration from the cd centre to the outer rim, for instance, and Band:0, Band:1, Band:2 ..., Band:n (wherein n is any number).In the description later, " Band " can be used as optical pickup OP0, the variable in OP1 data field of living in or zone.
Attention is according to the present invention, and each Band is corresponding to one in a plurality of data fields or the zone; The data total amount of Band, just, 2048RUBs is equivalent to first address size.
Spindle motor 29 in the CPU11 control drive unit 2.
Can be according to optical disc apparatus of the present invention in the CAV pattern, CLV pattern, and LCLV (limiting permanent linear speed) pattern backspin alternation of hosts spindle motor 20.
Fig. 2 is for describing the view of method of controlling rotation under the LCLV pattern.The CLV pattern requires to have high rotating speed near CD 3 centers.Yet, near cd centre, will spended time reach and make spindle motor 20 be stable at the state of rotating speed of target, just, the spindle lock state, it does not satisfy standard of seek operation and does not therefore allow to move under the CLV pattern.
Therefore, as shown in Figure 2, have the LCLV pattern according to optical disc apparatus of the present invention, wherein it is in response to the position of optical pickup, not only can be under the CLV pattern but also can move under the CAV pattern.Just, under the LCLV pattern, when two optical pickup OP0 and OP1 were in from cd centre to the predetermined track position, optical disc apparatus ran under the CAV pattern, and when optical pickup was in the outside from the predetermined track to the magnetic track, it ran under the CLV pattern.
In the present embodiment, will describe an example, the magnetic track that operational mode (CAV/CLV) variation wherein takes place under LCLV belongs to Band:8.
Notice that Band:8 of the present invention is corresponding to first data field of the present invention or first data area.
Relation between following table indication optical pickup position and the operational mode.
[table 1]
| Optical pickup OP0 | Optical pickup OP1 | Operational mode |
| Band:0 to 7 | Band:0 to 8 | CAV |
| Band:0 to 7 | Band:9 and Geng Duo | Can not move |
| Band：8 | Band:0 to 8 | CAV |
| Band：8 | Band：9 | CLV |
| Band：8 | Band:10 and Geng Duo | Can not move |
| Band:9 and Geng Duo | Band: be less than (Band-2 of OP0) | Can not move |
| Band:9 and Geng Duo | The Band+ of Band:OP0/-1 | CLV |
| Band:9 and Geng Duo | Band: more than (Band+2 of OP0) | Can not move |
In each signal processing unit, implement same operation, therefore will only describe signal processing unit 10_0 hereinafter.
Signal processing unit 10_0, on CD 3 in the sense data process, the signal that is carried out opto-electronic conversion by optical pickup OP0 is carried out RF handle (pit detection), implement multiple signal operation (SIGNAL) then, for example implement clock and reproduce and decoding processing (DEC).The data of reading send to main frame via ata interface (ATA I/F) 12.
Signal processing unit 10_0, on CD 3, write in the data procedures, main frame is carried out the coding (ENC) that comprises correction process by the data that ata interface 12 sends, implement then to write and handle operating process (writing), and the laser power that produces by control laser driver (not shown) is recorded in data on the CD 3.
Each motor in servo control mechanism operating unit (SERVO) 100_0 and the driver element 2 forms the feedback servomechanism control system jointly.It controls the focusing of optical pickup OP0 with respect to CD 3, follows the tracks of, and slides.
For instance, when searching request when main frame sends out, CPU11 just order servo control mechanism operating unit 100_0 so that it based on this request mobile optical pick-up head to assigned address.Then, the sliding motor 21_0 in the servo control mechanism operating unit 100_0 control drive unit 2.As a result, optical pickup moves to assigned address based on this request.Fig. 3 represents the block scheme by the signal Processing of CPU11 enforcement.
As shown in Figure 3, CPU11 has interrupt operation unit 110_0,110_1 and servo monitoring means 111_0 and 111_1.
Interrupt operation unit 110_0,110_1 periodically carry out interrupt operation and check whether have any tracking request to propose from main frame.
Interrupt operation unit 110_0 and 110_1, the request (order) of sending of response main frame, change their state extremely following any:
(1) idle condition;
(2) drive on-state (wherein servo control mechanism work);
(3) drive off state (wherein servo control mechanism is not worked);
(4) tracking state;
(5) read states; With
(6) write state.
When main frame proposed the tracking request, interrupt operation unit 110_0 and 110_1 implemented the hereinafter synchronous seek operation of description.When main frame does not propose the tracking request (idle condition), they implement the hereinafter tracking seek operation of description automatically.
Servo control mechanism monitoring means 111_0 and 111_1 monitor servo control mechanism operating unit 100_0 and 100_1 respectively.
For instance, when interrupting operating unit 110_0 decision optical pickup OP0 is implemented seek operation, so that it is when moving to destination address, servo control mechanism monitoring means 111_0 just monitors servo control mechanism operating unit 100_0 and checks whether destination address is suitably implemented seek operation.
Next step when interrupting operating unit 110_0 and 110_1 enforcement seek operation, will consider that the position of describing optical pickup limits.
The position of optical pickup limits
As mentioned above, according to each CAV, CLV and LCLV operational mode are moved according to optical disc apparatus of the present invention.It controls optical pickup OP0 under optimum way, OP1 carries out seek operation.In the seek operation implementation process, optical disc apparatus reference optical pick-up head OP0, OP1 controls seek operation in position subsequently.
(1) CAV pattern
As mentioned above, the CAV pattern is according to the pattern that changes rf frequency away from the distance of cd centre, so that the rotation of CD constant speed.In the CAV pattern, may there be optical pickup OP0, the position of OP1 limits.
(2) CLV pattern
As mentioned above, the CLV pattern is according to the pattern that changes main axis rotation to the distance of cd centre.In the CLV pattern, address read extract operation and data read/write operation can not be implemented, unless equate from the distance of cd centre to two an optical pickup position.
Therefore, usually the Band of optical pickup OP0 and optical pickup OP1 position has a difference, and for example poor is 1 or still less (zone or still less, perhaps data field or still less).
(3) LCLV pattern
In the LCLV pattern, wish to keep the position relation of optical pickup OP0 and optical pickup OP1 to avoid " can not move " in the above-mentioned table 1.
For example, as optical pickup OP0 and OP1 during together from center-side (Band:0) to predetermined Band (Band:8 the present embodiment), optical disc apparatus just runs on the CAV pattern.Therefore, there is not the position to limit to optical pickup OP0, OP1.
When two optical pickup OP0 and OP1 were exceeding among the Band (Band:9 or more in the present embodiment) of predetermined Band (Band:8 in the present embodiment), optical disc apparatus just ran on the CLV pattern.Therefore, the difference that wish to keep the Band of optical pickup is 1 or still less (zone or still less, perhaps data field or still less).
In addition, one of two optical pickups be moved or CD in the data situation of reading by one of optical pickup under, another optical pickup is followed the tracks of in control usually.
Therefore, optical disc apparatus according to the present invention has synchronous seek operation and follows the tracks of seek operation, and these will be described below.
Synchronous seek operation
At first, synchronous seek operation is described.
The enforcement of seek operation synchronously is when seek operation that tracking/read/write command is followed only sends to one of them optical pickup, considers the operation with another optical pickup of moved further of above-mentioned restriction and optical pickup.Because synchronous tracking, keeping and reading the address is possible state.
Fig. 4 and process flow diagram shown in Figure 5 are indicated the example of synchronous seek operation.Below, with reference to Fig. 4 and Fig. 5 synchronous seek operation is described.
Note, suppose in Fig. 4 and the process flow diagram shown in Figure 5 optical pickup OP0 is sent the tracking request.Further, in Fig. 4, " necessary " means must implement synchronous seek operation, and " not must " means and needn't implement synchronous seek operation.
Among Fig. 4, the precondition of implementing synchronous seek operation is: servo control mechanism is for two optical pickup OP1 and OP1 effective (step ST10); And spindle motor 20 runs on CLV pattern (step ST11).As only be applied to read operation, the CAV pattern does not need synchronous seek operation.
Below, in Fig. 4, will the situation that need synchronous seek operation be described, just, need two optical pickup OP0 and the same moved further of OP1.
At first, if spindle motor 20 runs on CLV pattern (step ST12); And, the target Band of residing Band of optical pickup OP1 and optical pickup OP1, promptly, based on the difference between the target Band under the destination address of tracking request, surpass 1, require synchronous seek operation so so that the Band difference of two optical pickups is 1 or still less (zone or still less, perhaps a data field or still less).
In the LCLV pattern,, also require synchronous seek operation, because spindle motor 20 runs on the CLV pattern when the target Band of optical pickup OP0 is 9 or more for a long time.
In the LCLV pattern, if the target Band of optical pickup OP0 is 8 (step ST14); And the Band at optical pickup OP1 place is 10 or more (step ST15), then require after to optical pickup OP0 seek operation, to carry out synchronous seek operation, so that the Band of two optical pickups difference is 1 or still less (zone or still less, perhaps a data field or still less).
In the LCLV pattern, if the target Band of optical pickup OP0 is 7 or still less (step ST16); And the Band at optical pickup OP1 place is 9 or more (step ST17), then require after to optical pickup OP0 seek operation, to carry out synchronous seek operation, so that all the Band difference of optical pickups is 1 or still less (zone or still less, perhaps a data field or still less).
Fig. 5 represents the operational flowchart according to the different situations that operate in synchronous seek operation execution or do not carry out shown in Figure 4.
Wish in judgement under the situation of synchronous seek operation, if servo control mechanism is for two optical pickup OP0 and OP1 effective (step ST20); And it is possible state (step ST21) that optical pickup OP1 is in seek operation, and optical pickup OP0, OP1 just move to destination address (step ST22) in the tracking request while (synchronous or while) to optical pickup OP0 so.
Even be in the situation that judgement needs synchronous seek operation, if servo control mechanism is for two optical pickup OP0 and OP1 invalid (step ST20); Or optical pickup OP1 not to be in seek operation be (step ST21) under the possible state, so just do not implement seek operation, and delay till proposing next and interrupting (step ST23).
Do not need under the situation of synchronous seek operation in judgement, request is moved (step ST24) based on tracking to have only optical pickup OP0, because do not require mobile optical pick-up head OP1.
Follow the tracks of seek operation
Below, will describe and follow the tracks of seek operation.
It is a kind of in the operation of ordering mobile optical pickup under the idle condition of not sending following the tracks of seek operation.In particular, in following the tracks of seek operation, when only one of them optical pickup being implemented read/write operation, one of them optical pickup progressively moves on CD, and another optical pickup is followed first optical pickup and moved.Because follow the tracks of tracking, can keep and read the address is possible state.
Fig. 6 and Fig. 7 are for describing the process flow diagram of following the tracks of seek operation.Below, with reference to Fig. 6 and Fig. 7 the tracking seek operation is described.
Notice that supposition is read and waited the optical pickup of operating in Fig. 6 and process flow diagram shown in Figure 7, for example is optical pickup OP1.Further, in Fig. 6, " necessary " means must implement follow the tracks of seek operation, and " not must " do not mean and must carry out the tracking seek operation.
As shown in Figure 6, the precondition of enforcement tracking seek operation is: optical pickup OP0 is in idle condition (step ST30); Servo control mechanism is for two optical pickup OP1 and OP1 effective (step ST31); Spindle motor 20 runs under CLV pattern or the LCLV pattern (step ST32); Can read optical pickup OP0, the address of OP1 or with three or still less sampling by interpolation method estimate they (step ST33); And optical pickup OP1 is not proposed the tracking request or carries out seek operation (step ST34).
That is to say that when synchronous tracking request proposed to optical pickup OP1, this request was preferentially handled.
Below, with describing the situation that requires to follow the tracks of seek operation, that is to say, require mobile optical pick-up head OP0 so that it follows optical pickup OP1.
At first, if spindle motor 20 runs on CLV pattern (step ST35); And the residing address difference of optical pickup OP0 and OP1 exceeds 2048RUBs (the data total amount that is equivalent to 1 Band) (step ST36), so just requires to follow the tracks of seek operation and limits with the position of satisfying whole optical pickups.
In the LCLV pattern, if the Band of the residing address of optical pickup is 9 or more (step ST35); So also require to follow the tracks of seek operation, because spindle motor 20 runs under the CLV pattern.
In the LCLV pattern, if the Band of the residing address of optical pickup OP1 is 8 (step ST37); And the address of optical pickup OP0 is greater than optical pickup OP1 2048 RUBs (the data total amount that is equivalent to 1Band) or more, just, optical pickup OP0 is in optical pickup OP1 outer end and surpasses 1Band data total amount (or regional total amount) or more, so just requires to follow the tracks of seek operation and limits with the position of satisfying two optical pickups.
When in following the tracks of seek operation one of them optical pickup being implemented read/write operation continuously, it moves usually especially gradually.Therefore, in the read/write operation process, exist the Band difference of optical pickup to exceed 1 situation.So, when optical pickup leaves the address that is equivalent to 1 Band, just carry out and follow the tracks of seek operation.Therefore, guarantee optical pickup Band difference maintain+become possibility between/-1.
On the other hand, move simultaneously at the wherein optical pickup of having described in the synchronous seek operation of (synchronous or while), compare and not come into effect operation under the stringent condition with the tracking seek operation, for instance, the Band difference of optical pickup should+/-1 between, and address difference need be in 1 Band equivalent address length.
In the LCLV pattern, if the Band (RUB) of the residing address of optical pickup OP1 is 7 or still less (step ST39); And the Band (RUB) of the residing address of optical pickup OP0 is 9 or more (step ST40), so just requiring to follow the tracks of seek operation limits with the position of satisfying optical pickup, in other words, the Band of optical pickup difference should be 1 or still less (zone or still less, perhaps data field or still less).
Fig. 7 be expression according to action need shown in Figure 6 or not needs follow the tracks of the process flow diagram that seek operation is operated under the situation separately.Be judged as under the necessary situation in the tracking seek operation, if servo control mechanism is for two optical pickup OP0 and OP1 effective (step ST50); And optical pickup OP0 is not proposed the tracking request or implements seek operation (step ST51), and optical pickup OP0 just moves to the residing address of optical pickup OP1 to follow optical pickup OP1.The reason of only checking optical pickup OP0 in step ST50 and ST51 is because optical pickup OP0 only is the optical pickup that will be used for seek operation.
On the other hand, be judged as under the not necessary situation, just do not implement to follow the tracks of seek operation in the tracking seek operation.If servo control mechanism is for two optical pickup OP0 and OP1 effective (step ST50); Perhaps optical pickup OP0 is implemented (step ST51) such as seek operation, then also do not implement to follow the tracks of seek operation.
As mentioned above, according to the optical disc apparatus of present embodiment, have two optical pickups, based on operational mode separately, CAV, CLV and LCLV limit according to the position of two optical pickups and to implement seek operation.
Just, in synchronous seek operation, when one of them optical pickup was proposed tracking request, optical disc apparatus judged, and whether moved the position qualification that another optical pickup satisfies two optical pickups synchronously or simultaneously.In following the tracks of seek operation,, when moving one of them optical pickup, optical disc apparatus judges whether mobile another optical pickup is followed the tracks of.
Therefore, it is possible writing data at a high speed and keep them to be in the readable state in address always on CD by two optical pickups.
The foregoing description does not limit the present invention, and under the situation that does not deviate from the spirit or scope of the present invention, those of ordinary skills can change or revise the present invention.
For example, begin order from cd centre and distribute the example of the situation of Band to be described its unqualified scope of the present invention as embodiment as above-mentioned.Because the present invention is used for controlling optical pickup according to the relative position relation of optical pickup, if on the CD in the position of two optical pickups and the software corresponding data field be associated, then just can realize.
Further, in the above-described embodiments, carry out synchronously/follow the tracks of seek operation so that the Band difference of optical pickup remain on+/-1 between, its unqualified scope of the invention.Obviously can be according to the variable threshold in the position relation setting software of the optical pickup that can read the address.
Control two optical pickups in the best way according to the optical disc apparatus of present embodiment, and can carry out the high speed write operation.Therefore, when introducing image capture device, the high speed that can be applied to great amount of images data on the CD better writes.
Claims (20)
1. optical disc apparatus comprises:
First optical pickup and second optical pickup are used for read/write data on CD;
Motor, be used for rotary CD, described motor is at least when (i) described first optical pickup and second optical pickup are arranged in the first area of CD, move with Constant Angular Velocity, when (ii) described first optical pickup and second optical pickup are arranged in the second area of CD, with the constant linear velocity operation, described first and second zones comprise a plurality of subareas respectively; With
The CD control module is used to manage the address on the CD and controls first optical pickup and second optical pickup, so that optical pickup is in the desired address on the CD;
Wherein at mobile first optical pickup to the seek operation of destination address, this CD control module according to target subarea under the destination address with respect to the position of described first area relation and this target subarea and second optical pickup second subarea between poor, judge whether second optical pickup is moved to destination address simultaneously with first optical pickup.
2. optical disc apparatus as claimed in claim 1, wherein work as:
This target subarea is outside described first area; And
This target subarea is during apart from this one or more subarea, second subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
3. optical disc apparatus as claimed in claim 1, wherein work as:
This target subarea is consistent with last subarea in the described first area; And
When this second subarea is arranged in described second area and surpasses a subarea apart from this target subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
4. optical disc apparatus as claimed in claim 1, wherein work as:
This target subarea is within described first area; And
When this second subarea is arranged in described second area and surpasses a subarea apart from this target subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
5. optical disc apparatus as claimed in claim 1,
Wherein when CD rotated with Constant Angular Velocity, this CD control module moved first optical pickup to destination address, and does not consider this second subarea.
6. optical disc apparatus as claimed in claim 1,
Wherein when CD rotates with constant linear velocity, and
Wherein at mobile first optical pickup to the seek operation of destination address, when this target subarea surpassed a subarea apart from this second subarea, this CD control module moved to destination address with second optical pickup simultaneously with first optical pickup.
7. optical disc apparatus comprises:
First optical pickup and second optical pickup are used for read/write data on CD;
Motor, be used for rotary CD, described motor is at least when (i) described first optical pickup and second optical pickup are arranged in the first area of CD, move with Constant Angular Velocity, when (ii) described first optical pickup and second optical pickup are arranged in the second area of CD, with the constant linear velocity operation, described first and second zones comprise a plurality of subareas respectively; With
The CD control module is used to manage the address on the CD and controls first optical pickup and second optical pickup, so that optical pickup is in the desired address on the CD;
Wherein this CD control module judges whether to move the residing address of first optical pickup to the second optical pickup based on subarea and relation of the position between the described first area and the residing separately address difference of first and second optical pickups that first and second optical pickups lay respectively at.
8. optical disc apparatus as claimed in claim 7, wherein work as:
The residing subarea of second optical pickup is positioned at outside the described first area; And
When the residing address difference of first and second optical pickups exceeds first address size,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
9. optical disc apparatus as claimed in claim 7, wherein work as:
The residing subarea of second optical pickup is consistent with last subarea in the described first area; And
The residing address of first optical pickup than big first address size in the residing address of second optical pickup or more for a long time,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
10. optical disc apparatus as claimed in claim 7, wherein work as:
The residing subarea of second optical pickup is in described first area; And
The residing subarea of first optical pickup is outside described first area the time,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
11. a data record method that is used at the CD identifying recording layer, described method comprises the following steps:
First optical pickup and second optical pickup are provided, are used for read/write data on CD;
Motor is provided, be used for rotary CD, described motor is at least when (i) described first optical pickup and second optical pickup are arranged in the first area of CD, move with Constant Angular Velocity, when (ii) described first optical pickup and second optical pickup are arranged in the second area of CD, with the constant linear velocity operation, described first and second zones comprise a plurality of subareas respectively;
By using the address on the CD control module management CD; And
By using the CD control module to control first optical pickup and second optical pickup, so that optical pickup is in the desired address on the CD;
Wherein at mobile first optical pickup to the seek operation of destination address, this CD control module according to target subarea under the destination address with respect to the position of described first area relation and this target subarea and second optical pickup second subarea between poor, judge whether second optical pickup is moved to destination address simultaneously with first optical pickup.
12. method as claimed in claim 11 is wherein worked as:
This target subarea is outside described first area; And
During one or more subarea, target subarea distance second subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
13. method as claimed in claim 11 is wherein worked as:
The target subarea is consistent with last subarea in the described first area; And
When this second subarea is arranged in described second area and surpasses a subarea apart from this target subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
14. method as claimed in claim 11 is wherein worked as:
The target subarea is in described first area; And
When second subarea is arranged in described second area and surpasses a subarea apart from this target subarea,
To the seek operation of destination address, this CD control module moves to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
15. method as claimed in claim 11, wherein when CD rotated with Constant Angular Velocity, this CD control module moved first optical pickup to destination address, and does not consider second subarea.
16. method as claimed in claim 11, wherein when CD rotates with constant linear velocity, and
Wherein when the target subarea surpassed a subarea from second subarea, to the seek operation of destination address, this CD control module moved to destination address with second optical pickup simultaneously with first optical pickup at mobile first optical pickup.
17. a data record method that is used at the CD identifying recording layer, described method comprises the following steps:
First optical pickup and second optical pickup are provided, are used for read/write data on CD;
Motor is provided, be used for rotary CD, described motor is at least when (i) described first optical pickup and second optical pickup are arranged in the first area of CD, move with Constant Angular Velocity, when (ii) described first optical pickup and second optical pickup are arranged in the second area of CD, with the constant linear velocity operation, described first and second zones comprise a plurality of subareas respectively;
By using the address on the CD control module management CD; And
By using the CD control module to control first optical pickup and second optical pickup, so that optical pickup is in the desired address on the CD;
Wherein this CD control module judges whether to move the residing address of first optical pickup to the second optical pickup based on subarea and relation of the position between the described first area and the residing separately address difference of first and second optical pickups that first and second optical pickups lay respectively at.
18. method as claimed in claim 17 is wherein worked as:
The residing subarea of second optical pickup is positioned at outside the described first area; And
When the residing address difference of first and second optical pickups exceeds first address size,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
19. method as claimed in claim 17 is wherein worked as:
The residing subarea of second optical pickup is consistent with last subarea in the described first area; And
The residing address of first optical pickup than big first address size in the residing address of second optical pickup or more for a long time,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
20. method as claimed in claim 17 is wherein worked as:
The residing subarea of second optical pickup is in described first area; And
The residing subarea of first optical pickup is outside described first area the time,
This CD control module moves the residing address of first optical pickup to the second optical pickup.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004047663 | 2004-02-24 | ||
| JP047663/04 | 2004-02-24 | ||
| JP336822/04 | 2004-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1697041A CN1697041A (en) | 2005-11-16 |
| CN100365714C true CN100365714C (en) | 2008-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100685457A Expired - Fee Related CN100365714C (en) | 2004-02-24 | 2005-02-24 | Optical disk apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100365714C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934047B (en) * | 2015-05-04 | 2017-11-21 | 苏州互盟信息存储技术有限公司 | Both-sided optical disc driver |
| CN114121090A (en) * | 2020-08-31 | 2022-03-01 | 华为技术有限公司 | Data read-write device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487296A2 (en) * | 1990-11-20 | 1992-05-27 | Matsushita Electric Industrial Co., Ltd. | High density disk apparatus |
| CN1182266A (en) * | 1996-08-14 | 1998-05-20 | 索尼公司 | Disk driving system and disk driving method |
| JP2000113500A (en) * | 1998-09-30 | 2000-04-21 | Victor Co Of Japan Ltd | Disk recording and reproducing device |
-
2005
- 2005-02-24 CN CNB2005100685457A patent/CN100365714C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487296A2 (en) * | 1990-11-20 | 1992-05-27 | Matsushita Electric Industrial Co., Ltd. | High density disk apparatus |
| CN1182266A (en) * | 1996-08-14 | 1998-05-20 | 索尼公司 | Disk driving system and disk driving method |
| JP2000113500A (en) * | 1998-09-30 | 2000-04-21 | Victor Co Of Japan Ltd | Disk recording and reproducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1697041A (en) | 2005-11-16 |
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