JPH02218075A - Head driving device - Google Patents

Abstract

PURPOSE:To shorten write-in time and read-out time by driving a driving part to drive finely a recording/reproducing head other than the recording/ reproducing head being executing write-in and read-out to a track where the write-in and the read-out are executed next. CONSTITUTION:In company with the movement of a roughly moving arm 11, the finely moving arm 22 of one side drives the head 23 to the direction of an arrow (d) so as to continue to follow the track tr1 where the head 23 is executing the write-in and the read-out. Besides, at that time, the finely moving arm 32 of the other side drives the head 33 to the direction of the arrow (c) so that the recording/reproducing head 33 reaches the position of the track tr2 before the head 23 finishes the write-in and the read-out of the track tr1. When the head 23 finishes the write-in and the read-out of the track tr1, the head 33 executes the write-in and the read-out of the track tr2 without intermission. Thus, wasteful time in which only the access of the heads 23, 33 is executed can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a head drive device for driving a recording/reproducing head of a disk-shaped recording medium, and is applicable to, for example, floppy disk drives and hard disk drives.

B0 Summary of the Invention The present invention provides a head drive device equipped with coarse movement and fine movement drive units for driving a recording/reproducing head of a disk-shaped recording medium. When writing and/or reading is being performed on the rack, a recording/reproducing head different from the recording/reproducing head that is performing the above writing and/or reading is used next for writing and/or reading. Or read out.

This makes it possible to shorten the time required to perform continuous writing and/or reading for a plurality of tracks.

DETAILED DESCRIPTION OF THE INVENTION C1 Prior Art Conventionally, as a head drive device for driving a disk for recording and reproducing a disk-shaped recording medium, for example, Japanese Patent Application Laid-Open No. 50-7540
The one disclosed in Publication No. 6 is known.

In other words, this publication describes a drive device used in a magnetic disk storage device, which is equipped with two mechanisms, one for screw movement and one for fine movement, for driving a C11 gas heel 1'. When positioning the plurality of magnetic heads with respect to the plurality of tracks in the same cylinder provided on the plurality of recording surfaces of the disk-shaped recording medium, this head drive device moves the plurality of magnetic heads as a whole. The heads are moved by the same head moving mechanism for overall positioning, and the precise position of each magnetic helad with respect to the tracks on each recording surface is corrected by a minute access mechanism.

D7 invention tries to solve i! ! By the way, data is now recorded on disk-shaped recording media generally used in Freonbie disk drives, hard disk drives, etc. in concentric tracks to enable random recording and playback. ing.

However, when writing and/or reading data to and/or from a disk-shaped recording medium in which tracks are formed concentrically, it is frequently necessary to use the recording/reproducing head to access tracks on different cylinders. In conventional head driving devices, the time required for this is wasted time.

In particular, when all data recorded on the disc-shaped recording medium is transferred to a streamer, the actual data writing and/or This required a transfer time that was significantly longer than the readout time.

The present invention has been proposed in view of these circumstances, and its purpose is to shorten the time required to continuously insert and/or read out multiple ranks. The object of the present invention is to provide a head drive device with a new configuration that allows the following.

E,! l! Means for Solving the Problems To achieve the above-mentioned object, the present invention provides a 7)' driving device for driving a disc-shaped recording medium. ! a first drive section that commonly drives recording/reproduction heads provided respectively for a number of recording surfaces; and a first drive section attached to the first drive section;
Each of the above recording and reproducing hens 1' is independent 4. and a second drive unit that minutely drives the drive unit, and when writing and/or reading is being performed on a predetermined track on the recording surface, the recording/reproducing drive unit that is performing the writing and/or reading; The recording/reproducing head different from the above 7. It is characterized in that it is driven by the drive section S2.

F1 action Head drive according to the present invention! In J71, the recording and reproducing heads provided respectively for a plurality of recording surfaces of a disk-shaped recording medium are driven in common by a first drive section, and a second drive head attached to the first drive section is driven in common by a first drive section. Each part is individually and minutely driven.

Then, when writing and/or reading is being performed on a predetermined track on the recording surface, a recording/reproducing head 1' different from the recording/reproducing head 1' that is performing the writing and/or reading is next. By being driven by the second drive unit to a track to which writing and/or reading is to be performed, there is no waste in which only the recording/reproducing head is accessed when performing continuous writing and/or reading to a plurality of tracks. You can save time.

G. Embodiment Hereinafter, an embodiment in which the present invention is applied to a head drive device of a hard disk drive device will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a rad drive device 1 to which the present invention is applied. Further, FIG. 2 is a side view of the head shaft drive device 1. As shown in FIG. First, the configuration of the head driving device 1 will be explained with reference to FIGS. 1 and 2. FIG.

The above-mentioned t' driving device 1 includes a coarse movement drive section 10 and fine movement drive sections 20, 30, and these drive sections 10, 20, 30 are drive-controlled by a control f7f1 section (not shown). It has become so.

The driving unit 10 for traction shown in F is centered on a support shaft 3 provided vertically on a base 2 as indicated by an arrow a in FIG.

It is composed of a coarse movement arm 11 that is attached to rotate r1 in the b direction, and a drive device 12 such as a motor that drives the 11 movement arm 11 in the directions of the arrows a and b. The two 1N movable arms II are opposed to the upper and lower surfaces of the hard disk 5 at a predetermined distance with the node disk 5 rotated at a predetermined distance by the motor 4 attached to the board 2. It has arm portions 13.14. At the tip portions of these arm portions 13.1.1, there are drive portions 20 for fine movement.
．． 30 are attached to each.

The drive unit 20 for fine movement attached to the arm 13 is
A fine movement arm 22 is attached to be movable in the direction of arrow C1d in FIG. It is made up of. A recording/reproducing head 23 for writing and/or reading data on the upper recording surface of the hard disk 5 is attached to the tip of the fine movement arm 22.

Similarly, the fine movement drive unit 30 attached to the arm part 14 has a fine movement arm 32 attached to the shaft 31 so as to be movable in the directions of the arrows e and d. It is comprised of a drive device such as a piezoelectric element (not shown) that drives in the directions of arrows c and d. A recording/reproducing head 33 for writing and/or reading data on the lower recording surface of the hard disk 5 is attached to the tip of the fine movement arm 32.

Each of the recording and reproducing heads 23 and 33 is connected to the drive device 1.
2, the L coarse movement arm 11 is driven, so that the hard disk 5 is commonly driven approximately on the radius.

Further, each of the recording and reproducing blades 23 and 33 is independently driven within a range of at least one track pinch by the two fine movement drive units 20 and 30.

In the head driving device I configured in this way,
Normally, the coarse movement arm 11 moves each of the recording/reproducing heads 23.33 to a predetermined position for a predetermined track on which writing and/or reading is to be performed, and the fine movement arm 22.32 moves these recording/reproducing heads 23. .33 to correct the correct track position. Then, while the coarse movement arm 11 is kept stationary at the predetermined position, the fine movement arms 22 and 32 are servo-controlled during the period when writing and/or reading is continued on the track. .3
3 to always follow the predetermined track.

Further, the head driving device 1 continuously writes and/or reads data on multiple tracks of adjacent cylinders, for example, when transferring all data recorded on the hard disk 5 to a streamer. When performing the above recording/reproducing head 2 as follows:
3. Drive 33.

For example, FIGS. 3A and 3B illustrate the operation of the head driving device 1 when writing and/or reading is performed continuously from the outer circumferential side to the inner circumferential side of the F hard disk 5. This is a diagram for

In this case, the coarse movement arm 11 moves from the outer periphery of the hard disk 5 in the direction of the arrow a so that each recording/reproducing head 23.33 moves at a rate of one track pinch T during one rotation of the hard disk 5. together with each of the fine movement arms 22, 32.

Along with this movement of the coarse movement arm 11, one of the fine movement arms 22, as shown in FIG. The recording/reproducing head 23 is driven in the direction of the arrow d so as to continue following the rack tr. Also, at this time, the other fine movement arm 32 is connected to the recording and reproducing throat 23 attached to the one fine movement arm 22.
Move the recording/reproducing head 33 in the direction indicated by the arrow above so that the recording/reproducing head 33 reaches the position of the next track tr) to be written and/or read by the time the writing and/or reading of rack 1++ is completed. Drive in direction C.

Then, when the vertical disk 5 rotates once and the -F recording/reproducing head 23 finishes writing and/or reading from the track tr2, the recording/reproducing head 33 continues to write and/or read the 9F track tr2. /or read.

Further, the recording/reproducing head 33 is connected to the track L.
When writing and/or reading rt, as shown in FIG. 3B, the -F recording/reproducing head 33
The fine movement arm 32 moves the recording and reproducing head l' 33 in the direction indicated by the arrow .
The recording/reproducing head 23 then writes and/or reads one rack TRS (!) by driving in one direction.
71.'' The second turbulent arm 22 drives the recording/reproducing head 23 in the direction of the arrow C indicated by -F.

Then, when the hard disk 5 rotates once and the recording/reproducing head '33 finishes writing and/or reading the track LH, the F recording/reproducing head 23
The fine movement arm 22 again drives the recording/reproducing head 23 in the direction of the arrow d so that the recording/reproducing head 33 continues to follow the track tr3, and the recording/reproducing head 33 then performs writing and/or reading. The fine movement arm 32 moves to the position 7 for recording and reproducing the track Lr.
+33 is driven in the direction of arrow C, and thereafter, each fine movement arm 22.
3.33 is driven.

In this way, when one of the recording and reproducing heads 23 and 33 is writing and/or reading a predetermined track, the other head is writing and/or reading from a certain track. By driving each of the fine movement arms 22 and 32 so that the fine movement arms 22 and 32 are driven up to 70 degrees, access of each of the recording and reproducing heads 23 and 33 is controlled when performing continuous writing and reading to or from a plurality of tracks of the hard disk 5. For this reason, compared to the conventional head drive device, the head drive device described in F. can continuously occupy multiple head drive units of adjacent cylinders. The stale data and/or read speed when writing and/or reading can be significantly reduced.

The above embodiment was of a so-called rotary type (swing arm type) in which the I11 movable arm 11 was driven around the support shaft 3; The present invention can also be applied to a so-called direct-acting type (linear arm type) in which a recording/reproducing head is reciprocated as proposed.

+1. Effects of the Invention In the head driving device according to the present invention, recording and/or recording are performed on predetermined tracks on a plurality of recording surfaces of a disk-shaped recording medium.
Or, when reading is being performed, a recording/reproducing head different from the recording/reproducing head performing the writing and/or reading is moved by the second drive unit to the next track to be written and/or read. Driven.

Therefore, according to the above head driving device, ? ii) When performing continuous writing and/or reading for several tracks, it is possible to eliminate wasted time during access of the recording/reproducing head, and greatly shorten the writing and/or reading speed. can do.

In particular, when reading and/or reading a large amount of data continuously, such as when transferring all data recorded on a disk-shaped recording medium to a streamer,
It is possible to significantly shorten the time required for this purpose.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a head driving device according to the present invention, FIG. 2 is a side view of the head driving device, and FIGS. 3A and 3U; 4B are for explaining the operation of the head driving device. This is a diagram. l...Head drive device 5...Hard disk 10...Drive section 11 for coarse movement...Coarse movement arm 12...Drive device 20.30...Drive section 22.32 for fine movement...・Fine movement arm 23.33...Record/Raw head

Claims (1)

[Scope of Claims] A first drive section that commonly drives recording/reproduction heads respectively provided for a plurality of recording surfaces of a disk-shaped recording medium; and a second drive unit that minutely drives the recording and reproducing heads respectively, and performs the writing and/or reading when writing and/or reading is being performed on a predetermined track on the recording surface. A head driving device characterized in that a recording/reproducing head different from the recording/reproducing head currently being used is driven by the second driving section to a track to be written and/or read next.