CN1553436A - Disc driver combination - Google Patents
Disc driver combination Download PDFInfo
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- CN1553436A CN1553436A CNA031267505A CN03126750A CN1553436A CN 1553436 A CN1553436 A CN 1553436A CN A031267505 A CNA031267505 A CN A031267505A CN 03126750 A CN03126750 A CN 03126750A CN 1553436 A CN1553436 A CN 1553436A
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- magnetic surface
- servo
- disc driver
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Abstract
In the invention, each drive is assembled from a set of parts of head and disk as well as electronic devices with preset parts. The said parts of head and disk include first magnetic surface and cooperated first read/write switch. The first surface of first drive in disk drive combination includes multiple data tracks and multiple servo region tracks, and the said servo region tracks contain relation of pitches between first servo region and data tracks. The said parts of head and disk also include second surface and cooperated second read/write switch. Second surface of first drive includes multiple servo region tracks in certain track pitch, and data tracks with track pitch different from track pitch in servo region. Thus, the invention defines relation of pitches between tracks in servo region and data tracks.
Description
[technical field]
The invention relates to disc driver combination, particularly about containing the disc driver combination of cephalic disc element and drive electronics.
[background technology]
In the magnetic medium area information storage, under the prerequisite that does not change a certain device structure, can come in described equipment, to obtain maximum memory space by the storage density that improves on the unit area usually.As United States Patent (USP) the 5th, 596, No. 458 described, described patent has disclosed a kind of disc driver of tool Variable Area read/write converter, the read data that are measured to are used to set up the read/write frequency in each regional border and described zone, and the frequency range that described read/write converter is suitable for is determined by the read data of measuring described converter.In this disk drive structure, after the driving servo-information writes magnetic track, can come the specified data track pitch according to the read/write converter track width that will reach.
In addition, consider the read/write characteristics and the regional layout of read/write converter, the measurement data of read/write converter track width recording characteristic can be used to increase the unit storage density.Adopt the record-header of less track width to make to cooperate between data track tightr, thereby increase storage density on the unit area, but storage surface needs to be decided by the track width of the read/write converter write signal that measures.Of No. the 08/966th, 591, U.S. Patent application, described patent has disclosed a kind of track width of measuring the read/write converter, and utilizes resulting result to set up the technology of the track pitch on the storage medium.After the track width that utilization measures is set up track pitch, servo-information is write magnetic track.After adopting above-mentioned technology, the track pitch on each storage surface will make the storage density maximization on the unit area, but each read/write converter will only have unique constant track pitch.Therefore, writing of servo track all needs a fixing spacing on each zone.
Though aforementioned two kinds of technology respectively have its advantage, in production, we still wish to adopt common servo track spacing, change track width to obtain maximum memory space and need not to set up a special track pitch.
[summary of the invention]
The object of the present invention is to provide a kind of disc driver combination.
The objective of the invention is to be achieved through the following technical solutions: each driver is that the part that cephalic disc element and drive electronics preset is assembled by a cover in the disc driver combination.Described cephalic disc element comprises one first magnetic surface and the one first read/write converter that is combined together with described first magnetic surface.Make up first magnetic surface described in first driver at described disc driver and comprise a plurality of data tracks and a plurality of servo territories magnetic track, and make up data track described in first driver and described servo territory magnetic track at described disc driver and contain one first servo territory-data track pitch relation.Servo territory-data track pitch the relation that makes up first magnetic surface described in second driver at described disc driver is different from the first servo territory-data track pitch relation that described disc driver makes up first driver.
Each cephalic disc element also comprises one second magnetic surface, and the one second read/write converter that matches with described second magnetic surface.Make up second magnetic surface described in first driver at described disc driver and comprise a plurality of servo territory magnetic tracks that contain a track pitch and a plurality of data track that is different from the track pitch of described servo territory spacing that contains, therefore defined a servo territory-data track pitch relation.The servo territory of described second magnetic surface-data track pitch relation is different from the servo territory-data track pitch relation of described first magnetic surface.
The advantage of disc driver of the present invention is: the disc driver of described combination can be with identical complete cephalic disc element and drive electronics manufacturing of producing in advance, and each driver of described combination has shown some total features.When producing the disc driver of this combination with general element, the servo track of each magnetic disk surface all can write under the same track spacing.
[description of drawings]
The invention will be further described to cooperate embodiment with reference to the accompanying drawings.
Fig. 1 is a process flow diagram of disc driver combination applying step of the present invention;
Fig. 2 has shown that a restituted signal of following the normal position signal in the disc driver combination of the present invention reaches an integration position signalling that reads from a servo territory magnetic track;
Fig. 3 is the vertical view that disk drive group unification dynamicizer of the present invention loads disc driver;
Fig. 4 is a disc driver combination head disc elements synoptic diagram of the present invention;
Fig. 5, the process flow diagram of the step of 6,7 and 8 difference display applications disc driver combination of the present invention.
[embodiment]
See also Fig. 1, described process flow diagram has shown the process that is used for to read/write converter-storer cooperation locator data magnetic track.Contain a plurality of read/write converter-media and need in each cooperates, repeat step shown in Figure 1 the disc driver that cooperates.
Fig. 2 has shown with the paired rotine positioning signal 8 that is positioned at Fig. 2 top of standard position signal and has been positioned at the integration position signalling 9 of Fig. 2 bottom.Described servo track represents that with solid vertical line except coinciding at data track 1 and servo track 1, remaining data track is all represented with vertical dotted line.With reference to Fig. 2, except data track 1, the remainder data magnetic track all departs from described servo track.Figure 2 shows that the example of supposition performance of a read/write converter that matches magnetic surface about, described servo-information is recorded on a track pitch greater than described read/write converter.For realizing the present invention, described servo-information promptly was recorded the track width performance that decides the read/write converter that matches before measuring process.Described servo-information is written on a track pitch, and described track pitch is greater than the expectation of the read/write converter in described disc driver available tracks spacing.In the described example, described ratio is 1.2, and the result is that described data track 2 is 2.2 in the servo track position.In similar mode, data track 3 is between servo track 3 and 4, and its position is servo track 3.4, adds that by the position of data track 2 1.2 to 2.2 produce.As shown in Figure 1, the track location formula of one data track is defined on the dielectric behavior basis that the read/write converter matches, and described magnetic track formula data are stored in the data track that allows the described needs in location on the basis of servo track position in the storer of described disc driver.
In the prior art, can use one to equate or big slightly spacing record servo track with desirable data track pitch.Although the last data track pitch of servo track gap ratio is big, can make data track tightr by writing down servo track with an a little little spacing of data track pitch than expection than servo track.Best effect can obtain 60% the time when expection minimum transition device track width scale ratio servo track space is many.
In Fig. 2, be used to set up the position of the data track position of data track 1,2,3,4,5 on the V1 of rotine positioning signal and integration position signalling, V2, V3, V4, V5 indication rotine positioning signal 8 and the integration position signalling 9, and the slope of signal on these positions of mark.If described slope and cut-off voltage are known, the slope of magnetic track servo position signal is predetermined to be and can be used for controlling track location by servo-drive system.Slope decision servo polarity, the magnetic track inoperative position of cut-off voltage decision expection.In fact, the magnitude that an AGC or other standardisation process are calibrated these two servosignals, cut-off voltage can be predicted based on the side-play amount of track location like this.And slope can be from known expection servo position pattern precognition, and which is linear on the data track position in known two servosignals simultaneously.For example, on the data track 3, it is linear having only integration position signalling 9 in Fig. 2.Therefore, described signal is used to locator data magnetic track 3.When data track 2, rotine positioning signal 8 and integration position signalling 9 all are linear, and therefore two signals can both be used to search and follow data track 2.
Rotine positioning signal 8 is by data track 1 mark, and cut-off voltage V1 is zero, because the data track position is consistent with the center line of servo track position.The cut-off voltage of other data track position has mixed positive voltage and negative voltage, and this mentions in the above, selected use on used position signalling basis, and described position signalling is had a linear gradient by on the data track position of searching.By selecting the cut-off voltage of suitable anticipatory data magnetic track, any track location can be synthetic with one or other rotine positioning signal 8 and integration position signalling 9.
Please refer to Fig. 1, as shown in the step 2 of flow table, behind writing servo information on the magnetic track, next step is a track width of measuring the read/write converter.The measurement of track width has several different methods, has below described three kinds.The purpose of setting up a track pitch for data track is to make it a high as far as possible track pitch, but can not the high level that is lower than manufacturing to the read/write record performance.
A kind of method of measuring the track width of read/write converter comprises with described read/write converter writes a test pattern to the associated magnetic dielectric surface, read described test pattern and measure an amplitude of described signal, wipe the part of test pattern then and read the amplitude of this signal, the signal amplitude before and after then test pattern being wiped compares.
Another kind of mode, we can use a kind of test procedure to determine the error rate of different track pitchs to set up data track pitch, and an embodiment of the method can be with reference to 747 test procedures, and the technician who is familiar with this technology understands.
The third method of measuring read/write converter track width comprises and writes one first test pattern, and then reads the error rate of first test pattern and measuring-signal.Next step writes on the one second and the 3rd test pattern the opposing face of first test pattern.The read/write converter turns back to the magnetic track that includes first test pattern, measures the error rate of signal.After writing the second and the 3rd test pattern, the error rate of reading will obtain a minimum track width, and described minimum track width will be used for providing an error rate that is fit to for the read/write converter.To obtain magnetic track can allow read-write operation to inter-track minor increment after finishing above-mentioned test.
With reference to Fig. 3, disc driver 25 comprises the disk 26 that a main shaft 27 that relies on turning motor (figure does not show) to rotate is supported.Disk 26 is by the disk folder 28 a certain positions that are fixed on respect to main shaft 27.Alignment of shafts C26 is that circumference calculates corresponding disk center, and outward flange 36 refers to the outward flange of disk 26.
The swing brake of disc driver 25 uses a dynamicizer loader mechanism, described mechanism comprise one and the lifting arm 37 that matches of the cam surface 38 of cam part 39 realize dynamically being written into and unloading of read/write converter 35.Integrated circuit 42 has comprised the operating circuit of disc driver 25.Distance 40 is the pivot 32 of swing brake distances to the rotation center C26 of disk 26, shown in Dam among Fig. 3.Distance 41 is the distances from pivot 32 to read/write converter 35 slits, as using shown in the Dag among Fig. 3.
Swing brake is installed between the outward flange 36 of the inward flange (figure do not show) of disk 26 and disk 26.For ease of explaining that the rotary actuator among Fig. 3 is installed in the inner edge of the regional N that can calculate its border.Distance 40 with apart from the angle Θ N between 41, promptly represent the angle of magnetic track N.Load disc driver because disc driver 25 is a dynamicizer, then its excircle can be left the determining positions on disk 26 surfaces by lifting arm 37 lifting read/write converters 35.Similarly, inner periphery can be by the internal impact detent that is positioned at magnetic flux dish device 34 end face bottoms (figure does not show) decision.
With reference to Fig. 4, each driver is that the part that cephalic disc element and drive electronics preset is assembled by a cover in the disc driver combination of the present invention, described cephalic disc element comprises a disk 100, the one first read/write converter 12 that described disk contains one first magnetic surface 10 and matches with it, first driver, first magnetic surface 10 comprises a plurality of servo tracks (figure does not show) that contain a track pitch in the described disc driver combination, and a plurality of data tracks that are different from the track pitch of described servo track spacing (figure does not show) that contain, therefore defined a servo territory-data track pitch relation; Second driver, first magnetic surface (figure does not show) comprises a plurality of servo tracks (figure does not show) and a plurality of data track (figure does not show) that contains a track pitch in the wherein said disc driver combination, the track pitch of described servo track and described data track is different, therefore defined a servo territory-data track pitch relation, the servo territory of wherein said second driver, first magnetic surface-data track pitch relation is different from described disc driver and makes up the servo territory of first driver, first magnetic surface-data track pitch relation.
Fig. 5 to Fig. 8 has illustrated and the relevant constructing technology of the variable track width technology of the described disc driver of above-mentioned Fig. 1 to Fig. 4 with block diagram form.Using the present invention to make disc driver, is that the track location formula is set up in each read/write converter-dielectric surface cooperation according to the flow process among Fig. 1 at first.If disc driver has comprised a plurality of read/write converters-dielectric surface and cooperated, should describedly be respectively each cooperation and set up formula.(step 6), the process of manufacturing is continuous, be according to following plurality of processes after the track location formula is stored in the storer.For example, with reference to Fig. 5, in the disc driver assembling process after magnetic track formula relation is set up, make and transfer to the step 1203 that converter/disk is assembled to circuit board.Then, in step 2401, the border of data recording area is based on the foundation of read/write converter and be used for the manufacturing of disc driver on the described magnetic surface.Because all being used for produced the read/write converter of disc driver and bought, thus the discharging of data area according to be not to measure the frequency characteristic of read/write converter but the supposition frequency characteristic falls within a certain scope.Then, in step 1208, each zone of optimization read channel model, and then in step 1209, determine to drive and remaining mistake, in step 1210, finish final driving test at last.In above-mentioned manufacturing process process, the read/write characteristics frequency that it should be noted that the read/write converter is to be assumed to a ratings, and does not have consideration to contain the characteristic advantage of the converter measurement read/write frequency capabilities of dielectric surface.
See also Fig. 6, after having finished the step 6 among Fig. 1, the cephalic disc element will be as being assembled on the circuit board shown in the step 1203.Then, measure the position (step 1204) of internal impact detent, measure external impact detent (step 1205) subsequently.Next step, density capacity and the adjustment read/write frequency of measuring each converter make the maximization of disk density.Be illustrated in this step 1206 in Fig. 6.After having determined the converter capacity and having adjusted the read/write frequency, according to the zone of emissions data shown in the step 1207.In step 1207 careful description the process in discharging external data zone.Again next step be each zone of optimization read channel model (step 1208), an ensuing step is determined driver and a spot of mistake (step 1209), the final step program is to drive test (step 1210).
The another kind of method of disc driver constructed in accordance is that next the track location formula of each read/write converter-dielectric surface is the step among Fig. 7 by the described method decision of Fig. 1.Comparison diagram 6 and Fig. 7 have wherein comprised a lot of common steps, and these steps are represented by common parameter.The manufacturing of the disc driver that is proposed in process flow diagram has cooperated Fig. 1 and Fig. 7, and the manufacture process shown in Fig. 7 has been shared the advantage of process shown in Figure 6.
With reference to Fig. 8, step application relevant with Fig. 1 in it is in the specific step, for example, and Fig. 6.According to the manufacture process of the example of Fig. 8, the circumference number that magnetic track writes on the disk is assumed to a ratings, and opposite with Fig. 6 is to determine inside and outside collision brake device.Manufacture process among Fig. 8 has been followed the process described in Fig. 6, has used general parameter in some indicated common steps of Fig. 6 and Fig. 8.
The disc driver of disc driver combination of the present invention can be that the part that cephalic disc element and drive electronics preset is assembled by an identical cover.Each driver of described disc driver combination has shown some total features, for example memory capacity, or even some elements, for example converter or medium, the more inapplicable minimum performance standards of described driver.When producing the disc driver of this combination with general element, the surface of each disk all can be under the same track spacing writing servo magnetic track, next when maximizing the storage density of same area, provide acceptable read for each read/write converter-data track pitch is set up in dielectric surface cooperation.Use this technology, the memory capacity that the read/write converter of increase-dielectric surface cooperates can compensate to be carried out less read/write converter-dielectric surface and cooperates and produce the disc driver that meets the default capabilities standard, for example, and memory capacity.Each read/write converter-dielectric surface is combined with a different servo territory-data track pitch relation.This different servo territory-data track pitch relation may reside between driver and the driver, and each magnetic surface that also may reside in same disc driver is with between the read/write converter cooperates.Except considering data track pitch, also will consider the recording density capacity parameter, converter-medium cooperates the method for the recording capacity that will overcome low performance converter-medium cooperation than the recording capacity that dependence uses high performance converters-medium to cooperate more effective like this.Because the zone boundary layout used in described zone and recording frequency are to be based upon on the basis that performance parameter and converter-medium cooperate, the zone boundary pattern in the therefore described disc driver combination between driver and the driver is different.
Claims (10)
1. disc driver combination, it is characterized in that: each driver is that the part that cephalic disc element and drive electronics preset is assembled by a cover in the described disc driver combination, described cephalic disc element comprises a disk, the one first read/write converter that described disk contains one first magnetic surface and matches with it, first driver, first magnetic surface comprises a plurality of servo tracks that contain a track pitch in the wherein said disc driver combination, and a plurality of data tracks that are different from the track pitch of described servo track spacing that contain, therefore defined a servo territory-data track pitch relation; Second driver, first magnetic surface comprises a plurality of servo tracks and the data track that contains a track pitch in the wherein said disc driver combination, the track pitch of described servo track and described data track is different, therefore defined a servo territory-data track pitch relation, the servo territory of wherein said second driver, first magnetic surface-data track pitch relation is different from described disc driver and makes up the servo territory of first driver, first magnetic surface-data track pitch relation.
2. disc driver combination as claimed in claim 1, it is characterized in that: the servo track spacing of described first driver and second driver is identical.
3. disc driver combination as claimed in claim 1, it is characterized in that: described cephalic disc element comprises one second magnetic surface and the one second read/write converter that matches with described second magnetic surface, first driver, second magnetic surface comprises a plurality of servo tracks and a plurality of data track that contains a track pitch in the wherein said disc driver combination, the track pitch of described servo track and described data track is different, therefore defined a servo territory-data track pitch relation, the servo territory of wherein said second magnetic surface-data track pitch relation is different from the servo territory-data track pitch relation of described first magnetic surface.
4. disc driver combination as claimed in claim 1, it is characterized in that: the quantity of data track is different from the quantity of data track on described second driver, first magnetic surface on described first driver, first magnetic surface.
5. disc driver combination as claimed in claim 1 is characterized in that: first driver, first magnetic surface has also comprised a plurality of posting fields in the described disc driver combination, and described posting field contains the circumferential boundary that is defined as first boundary scheme; Second driver, first magnetic surface has also comprised a plurality of posting fields in the described disc driver combination, and described posting field contains the circumferential boundary that is defined as second boundary scheme that is different from first boundary scheme.
6. disc driver combination as claimed in claim 5, it is characterized in that: first driver, second magnetic surface has also comprised a plurality of posting fields in the described disc driver combination, and described posting field contains the circumferential boundary that is defined as one the 3rd boundary scheme that is different from described first boundary scheme.
7. disc driver combination as claimed in claim 6, it is characterized in that: described disc driver makes up in second driver, second magnetic surface and comprises a plurality of posting fields that contain the circumferential boundary that is defined as the 4th boundary scheme, and wherein said the 4th boundary scheme is different from described first boundary scheme, described second boundary scheme and described the 3rd boundary scheme.
8. disc driver combination as claimed in claim 5, it is characterized in that: described disc driver makes up first and second driver and contains an identical data storage capacity, and the data track quantity on first magnetic surface of described first driver is different from the data track quantity on first magnetic surface of described second driver.
9. disc driver combination as claimed in claim 5, it is characterized in that: first magnetic surface of described first driver contains one first data storage capacity, second face of described first driver contains one second data storage capacity, and wherein said first data storage capacity is different from described second data storage capacity.
10. disc driver combination as claimed in claim 6, it is characterized in that: each face of described first and second driver contains a data storage capacity, total data storage capacity of wherein said first driver is identical with total data storage capacity of described second driver, and described first driver wherein the data storage capacity of a magnetic surface to the data storage capacity difference that is less than a magnetic surface in described second driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031267505A CN1553436A (en) | 2003-05-30 | 2003-05-30 | Disc driver combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031267505A CN1553436A (en) | 2003-05-30 | 2003-05-30 | Disc driver combination |
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| Publication Number | Publication Date |
|---|---|
| CN1553436A true CN1553436A (en) | 2004-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031267505A Pending CN1553436A (en) | 2003-05-30 | 2003-05-30 | Disc driver combination |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7747810B2 (en) | 2006-01-04 | 2010-06-29 | Hitachi Global Storage Technologies Netherlands B.V. | Address assigning method, disk drive, and data writing method |
| CN103310819A (en) * | 2012-03-09 | 2013-09-18 | Lsi公司 | Storage device having write signal with multiple-slope data transition |
-
2003
- 2003-05-30 CN CNA031267505A patent/CN1553436A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7747810B2 (en) | 2006-01-04 | 2010-06-29 | Hitachi Global Storage Technologies Netherlands B.V. | Address assigning method, disk drive, and data writing method |
| CN103310819A (en) * | 2012-03-09 | 2013-09-18 | Lsi公司 | Storage device having write signal with multiple-slope data transition |
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