JPS6171479A - Information processor - Google Patents

Abstract

PURPOSE:To form an information processor possible for high density recording and retrieved and reproduced in high speed by providing the 1st moving means moving an optical head in a high speed and the 2nd moving means having another drive source than that of the 1st moving means and moving the optical head in a low speed. CONSTITUTION:In high speed movement, a stepping motor 15 is driven, a feeding screw 13 is driven by the motor 15 and since the feeding screw 13 and a nut placed on the inner circumference of a turning body 12 are screwed, the turning body 12 starts feeding in a direction A shown in figure while being turned. Since the turning body 12 depresses a wall face 14 of an optical head 3 in response to the movement in the direction A of the turning body 12, the optical head 3 is moved in the direction A to attain high speed movement of the head 3. In accurate movement, that is, low speed movement, a motor 17 is driven to turn a work gear 18 and a work wheel 16 screwed to the worm gear 18 starts turning.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an information processing apparatus that moves an optical head to record or reproduce information at a predetermined position on a recording medium.

[Prior art]

In recent years, the amount of information handled by various information processing devices has increased rapidly. In particular, the amount of image information stored in a single document, such as graphics, for office processing and various designs is becoming increasingly large, and research and development of information processing devices that can record and reproduce this information at high speed and high density are being actively conducted. There is. Among the devices that provide this support, magneto-optical disk devices in particular have an extremely large capacity, can perform high-density recording, and have random access functions, etc., just like normal optical disk devices. It is attracting the most attention because information can be easily erased and re-recorded.

Conventionally, this type of magneto-optical disk device has the configuration described below. In Figure 2, 1 is a magneto-optical disk,
It is rotated at high speed by a drive motor 2, and 3 is a well-known optical head for recording and reproducing. 4 is an auxiliary magnetic pole;
It is held by a connecting member 5 connected to the optical head 3, and is provided at a position facing the irradiation position 8 on the magneto-optical disk 1 of the light beam 7 of the optical head 3 with the magneto-optical disk 1 sandwiched therebetween. Erasing and writing to the disk 1 becomes possible.

The optical head 3 moves in the direction of the arrow while being guided by the idle rail 9. In the same figure, 6 is a hinge, and 10 is a disk housing cover.

By the way, as a means for transporting the optical head 3, there has been a combination of a transport screw and a motor. That is, the rotational motion of the motor is converted into linear motion by the transfer screw and nut to move the optical head.

In this case, if the pitch of the transfer screw is made smaller, the feed of the optical head becomes smaller and high-density recording becomes possible. However, it has the disadvantage that the search time becomes long, and although it is suitable for high-density recording, it is difficult to search and reproduce at high speed.

In addition, the transfer method using a linear motor can obtain direct linear motion without using an auxiliary mechanism such as a transfer screw, so it is suitable for high-speed feeding, but the precision transfer accuracy is poor and it is not suitable for transfer for high-density recording. It had the disadvantage that it did not follow.

Furthermore, a method of switching the transfer speed using gears and clutches has been considered, but it has been difficult to transfer with high precision due to ear packing and the like. Additionally, there was loss time when switching the clutch.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention is to provide an information processing apparatus capable of high-density recording and high-speed retrieval and reproduction in order to eliminate the above-mentioned drawbacks.

〔composition〕

In order to achieve the above object, the present invention provides an information processing device including: a first moving means for moving an optical head at high speed;
It is characterized by having a second moving means that has a drive source different from the moving means and moves the light beam P at a low speed.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a perspective view of a moving mechanism of an information processing apparatus according to an embodiment of the present invention. As shown in the same figure, the ID rail is 9KG.
Therefore, the optical head 3 as a moving body is slidably provided. A hole 11 is provided on the side of the optical head 3 facing the idle rail 9, and a rotating body 12 is housed inside the hole 11. A nut is provided on the inner periphery of the rotating body 12, and a transfer screw 13 screwed into the nut passes through the wall surface 14 of the optical head 3 and is connected to a stepping motor 15.

Further, a worm wheel 16 is provided on the outer periphery of the rotating body 12, and this worm gear. The worm gear 1 is driven by a motor 17 provided in the main part of the optical head 3.
It is screwed together with 8.

Next, the effect will be explained. When performing high-speed transfer, the stepping motor 15 is driven. The transfer screw 13 rotates due to the driving of the stepping motor 15, but since the transfer screw 13 and the nut on the inner circumference of the rotating body 12 are screwed together, the rotating body 12 is rotated and transferred in the direction shown in the figure. Start.

As the rotating body 12 is moved in the incoming direction, the rotating body 12 presses the wall surface 14 of the optical head 3, so that the optical head 3 is moved in the incoming direction, and the optical head 3 is transferred at high speed.

Further, the motor 17 is driven when performing precision transfer, that is, low-speed transfer. When the motor 17 is driven, the worm gear 18
rotates, and the worm wheel 16 screwed with the worm gear 18 also rotates. That is, the rotary body 12 begins to rotate, and since a nut is provided on the inner periphery of the rotary body 12 to be screwed into the transfer screw 13, the rotary body 12 starts to move linearly in the direction into the figure at the same time as it rotates. , the optical head 3 is transferred in the same manner as described above.

Furthermore, when switching between high-speed transfer and low-speed transfer, if the optical head 3 is moved at high speed and the T-mgya 18 is rotated at low speed, then the driving of the stepping motor 15 is stopped and only the high-speed movement is stopped. No backlash or the like occurs, and no clutch is required.

〔effect〕

As described above in detail and specifically, the present invention provides the following significant effects.

(1) High-density recording can be performed in a recording/reproducing device, and high-speed searching can be performed.

(2) Loss time is reduced when switching from high-speed movement to low-speed movement.

(3) Movement speed can be switched without causing backlash or the like.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a moving mechanism of an information processing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic side view of a magneto-optical disk device. In the figure, 3... optical head, 12... rotating body, 13... transfer screw, 15... stepping motor, 16... worm wheel, 17... motor, 18... worm carrier. Figure 1 Figure 2

Claims (2)

[Claims] (1) In an information processing device that moves an optical head to record or reproduce information at a predetermined position on a recording medium, what is a first moving means for moving the optical head at high speed, and the first moving means? An information processing apparatus comprising: a second moving means having another drive source and moving the optical head at a low speed. (2) the first moving means comprises a rotating body fixed to the optical head and having a nut provided on its inner circumference, and a transfer screw screwed into the nut and driven by a first drive source; Second
Claim 1, wherein the moving means comprises a worm wheel provided on the outer periphery of the rotating body, and a worm gear that is threadedly engaged with the worm wheel and driven by a second drive source to rotate the rotating body. The information processing device described.