JPH01118265A - Information processing device - Google Patents

Abstract

PURPOSE:To easily realize the increase of the recording capacity without incurring the complicating of a structure by executing the rotation of a recording medium by giving the rotating force in the circumferential direction to the peripheral edge part of the medium. CONSTITUTION:A spindle motor 5 and turn table 6 are arranged outside the circumferential zone of an optical disk 1 and the structure is made so as to give a rotating force to the disk 1 by bringing the turn table 6 into contact with the outer peripheral face of the disk 1. An optical pickup device 3 is provided movably in the whole radial direction of the disk 1 and a fixing member 9 is abutted to the disk peripheral edge freely rotatably. With this structure, the pickup 3 is moved until a condensing lens 7 coincides with the optical disk center O and the whole disk face can be made in a recordable zone, so the increase of the recording capacity can easily be realized without incurring the device complicating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an information processing apparatus using a recording medium such as an optical disk.

(Prior Art) In recent years, the market for information recording and reproducing devices using optical DIGs has been rapidly expanding due to their advantages such as their enormous storage capacity and the possibility of non-contact recording and reproducing. The information recording and reproducing device is the third
As shown in (A) and (B) of the figure, while the optical disc 101 is being rotated, the optical pickup device 103 is moved in the radial direction along the optical disc surface to optically record or record information on the optical disc 101. It performs regeneration.

(Problem to be solved by the invention) By the way, in the current optical disc, (A
> As shown in (B), the information recordable area is:
Generally, a portion excluding a circumferential area of a predetermined radius A2 from the center of rotation is allocated.

This is because the area below the predetermined radius Δ2 of the optical disc 101 is the area where the rotation device 105 of the optical disk 101 is installed, and the movement of the optical pickup device 103 is restricted by the installation of the rotation device 105, so that information can be recorded. - This is because it is impossible to reproduce.

Specifically, as shown in FIG. 3(B), when a rotating device 105 with a radius of B is installed, the dimension from the center of the condensing lens 107 of the optical pickup device 103 to one end surface of the housing. Let C be the optical pickup device 103 to avoid collision with the rotation device 105.''2, and at least A2 = (B+-
It is impossible to record or reproduce information at a position within the radius of C).

However, the existence of such unusable areas is an important issue that needs to be improved in today's world, where the number of public records is expected to increase dramatically in the future.

In other words, measures to increase the recording capacity can be considered, such as improving the recording method on optical discs or increasing the recording density by improving the optical system, but research requires a large amount of time and money, and is Since the recordable area is limited as described above, there are naturally limits. On the other hand, if the recordable area itself can be increased, the recording capacity can easily be greatly increased without the above-mentioned problems.

The present invention has been made in view of the above, and an object thereof is to provide an information processing device that can increase recording capacity without complicating the configuration.

[Structure of the Invention] (Means for Solving the Problems) - In order to achieve rotation efficiency, the present invention provides a method for rotating the peripheral surface of a recording medium on which information is recorded or reproduced in the peripheral direction. The present invention is summarized as having a rotating means for rotating the recording medium by applying a force, and a processing means for optically recording or reproducing information on the recording medium rotated by the rotating means.

(Function) In the information processing device according to the present invention, the rotating means rotates the recording medium by applying a rotational force in the peripheral direction to the peripheral surface of the recording medium. can be installed in the outer peripheral area of the recording medium, thereby increasing the movable range of the processing means in the radial direction of the recording medium.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

(A> and (B) in FIG. 1 show the arrangement configuration of a recording medium 1 rotation means and a processing means in an information processing apparatus according to an embodiment of the present invention, (A) is a plan view, and (B) is a side view. The feature of this is that the spindle motor 5 and turntable 6, which constitute the rotation means, are arranged outside the circumferential area of the optical disc 1, which constitutes the recording medium, and the optical pickup device 3, which constitutes the processing means. can be moved by the radial distance of the optical disc 1, and the area in which information can be recorded is expanded to cover the entire surface of the optical disc 1.

The turntable 6 is disposed in contact with the outer circumferential surface of the optical disc 1, and rotates the optical disc 1 by transmitting rotation driven by the spindle motor 5 to the optical disc 1. By forming tooth grooves on the outer peripheral surfaces of the turntable 6 and the optical disc 1 so that they mesh with each other, the optical disc 1 can reliably rotate in synchronization with the rotation of the spindle motor 5 without delay.

Further, in FIG. 1, reference numeral 9 denotes a fixing member for setting the rotation center of the optical disc 1 to the center O of the circle.
is placed in rotatable contact with the outer circumferential surface of.

Therefore, in this embodiment, the optical pickup device 3 can move in the radial direction of the optical disc 1 without being restricted, and can move between the center of the condenser lens 7 and the center of the optical disc 1 at maximum.
You can move to the position where . Therefore, there is no need to set up an area on the optical disc 1 where information cannot be recorded as in the past, so the entire surface can be made into a recordable area, resulting in a significant increase in recording capacity. In particular, in the past, in the case of small-diameter optical discs such as CDs, it was difficult to secure a sufficient recordable area depending on the size of the rotating means and processing means. According to the embodiment, sufficient security can be achieved.

In this embodiment, the rotation of the optical disc 1 is centered around 0.
Although the fixing members 9 were arranged around the second
As shown in the figure, a small hole may be provided in the center of the optical disc 1 and the optical disc 1 may be attached to the fixed shaft 11. As a result, compared to the above embodiment, the radius area of the dimension valve (more precisely, the value obtained by adding the fixed + h11 radius) between the condenser lens 7 and one end face of the housing of the optical pickup device 3 is recorded. This results in a decrease in recording capacity, but has the advantage that stable rotation can be obtained. In this case,
By also using and deploying the fixing member 9, it becomes possible to obtain more stable rotation.

[Effects of the Invention] As explained above, according to the present invention, the rotation of the recording medium by the rotating means is performed by applying a rotational force in the circumferential direction to the peripheral edge surface of the recording medium. Since the rotating means can be installed in the outer circumferential area of the recording medium and the range of movement of the processing means in the radial direction of the recording medium is increased, the recording capacity can be increased without complicating the configuration.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing another embodiment, and FIG. 3 is a diagram showing a conventional example. DESCRIPTION OF SYMBOLS 1... Optical disc 3... Optical pickup device 5... Spindle motor 6... Turntable 7... Condensing lens 9... Fixing member 11...
Fixed axis

Claims (2)

[Claims] (1) A rotating means for rotating the recording medium by applying a rotational force in the peripheral direction to the peripheral surface of the recording medium on which information is recorded or reproduced, and a rotating means for rotating the recording medium by the rotating means. An information processing device comprising: processing means for optically recording or reproducing information. (2) The information processing apparatus according to claim 1, wherein the rotating means rotates the recording medium via means for receiving a rotational force formed on a peripheral surface of the recording medium. .