WO2008010493A1

WO2008010493A1 - Disc drive device

Info

Publication number: WO2008010493A1
Application number: PCT/JP2007/064103
Authority: WO
Inventors: Tetsuji Fukuyama; Masahiro Fukuyama
Original assignee: Hiro 21 Corporation
Priority date: 2006-07-19
Filing date: 2007-07-17
Publication date: 2008-01-24
Also published as: JPWO2008010493A1

Abstract

Provided is a disc drive device which can simply supply an electronic functional section with power at low cost. At the periphery of a hole on a disc, a plurality of thin film first conductive sections (113) connected to the electronic functional section are arranged. A protruding section (21A) of a turntable is provided with press-contact members (3A-3C) which are brought into press-contact with the first conductive sections (113) to be electrically connected when a disc is rotated and driven. First and/or second photoelectric conversion means (4A, 4B) electrically connected to the press-contact members is arranged on the rotating shaft peripheral section (21A) and the other end section (21B). Third and fourth photoelectric conversion means (5A, 5B) are arranged at positions which face the first and second photoelectric conversion means by being physically separated from the turntable (20). Signals are transmitted and received between the electronic functional section and a disc drive device side, through the first and second conductive sections and the first to the fourth photoelectric conversion means. An electronic functional section of a rotating section is supplied with power from a battery (6) through the press-contact members (3A-3C) and the first conductive section (113).

Description

Specification

Disk drive device

Technical field

The present invention relates to a disk drive device, for example, a disk drive device and a disk signal processing system that reliably transmit and receive signals between a disk (rotary recording medium) and the disk drive device with a simple configuration.

Background art

[0002] Optical discs are extremely advantageous in terms of cost performance because they have a very large amount of data that can be recorded even though they are mainly composed of extremely inexpensive materials such as polycarbonate. Is the most promising recording medium.

[0003] A disk drive device is used to read information recorded on an optical disk or write information (read Z write). In a disk drive device, an optical disk is placed on a turntable, clamped by a clamper, rotated by a spindle motor, irradiated with laser light, reflected light of the optical disk surface force is received, and demodulated. The recording signal is read out. Patent Documents 1 to 3 disclose typical configuration examples of powerful disk drive devices.

Patent Document 1: Japanese Patent Laid-Open No. 11 353749 (paragraph number [0024] FIG. 1)

Patent Document 2: JP 2000-100031 (paragraph numbers [0013] to [0015] FIG. 3)

Patent Document 3: JP 2000-100032 (paragraph numbers [0012] to [0017] FIG. 1)

[0005] Incidentally, an optical disc in a form in which an electrical circuit such as an electronic functional unit that extends only on a recording area is mounted on the optical disc has been proposed. However, the optical disk and the disk drive device are electronically mounted on the optical disk because they operate in a state where they are electrically insulated and the optical disk rotates at a high speed. Signal transmission / reception between the functional unit and the internal circuit on the disk drive side is not easy.

[0006] Proposed as a disk drive device for a powerful type of optical disk is to use a radio signal for transmission / reception of signals on the optical disk side and the disk drive device side. For example, antennas are formed on the optical disk surface and the disk drive side, respectively. A wireless signal is transmitted and received through an antenna (Patent Document 4). The current mainstream is such wireless signal exchange.

[0007] Patent Document 5: JP-A-8-161790 (paragraph numbers [0020] to [0025] FIG. 1)

Further, a light emitting Z light receiving circuit is formed on each of the optical disk side and the disk drive side.

However, a configuration for transmitting and receiving optical signals via the light-emitting Z light-receiving circuit is also conceivable, but there is no actual proposal.

[0009] Further, a configuration has been proposed in which signal transmission / reception between the electronic function unit and the internal circuit on the disk drive device side is performed while rotation by the disk drive device is stopped (patent). (Ref. 5).

Patent Document 5: US Pat. No. 5,119,353 (Fig. 2, columns 4 and 5)

[0010] Further, Patent Document 6 discloses a disk drive device having a structure as shown in FIGS. 7 (A) and 7 (B).

Patent Document 6: Japanese Patent Laid-Open No. 5-54460 (FIG. 1, paragraph numbers [0013] to [0028])

In this disk drive device, solid memory 612 is embedded in disk 610, and lead wires are drawn from input / output terminals DI, DO, CS, SCK, VDO of solid memory 612 (solid memory 612 Concentric ring-shaped terminals 614a to 614f (only 614a shown) are formed on the disk surface corresponding to each lead wire. On the other hand, external contact terminals 617a to 617f to be connected to the input / output terminals of the solid-state memory 612 via lead wires are provided on the upper surface side of the clamper 615. These external contact terminals are signal transmission media (specific configuration is unknown). Is electrically connected to the data input unit 620.

[0012] A concave portion 700 is provided on the disc-facing side of the clamper, and contact terminals 616a to 616f having sharp tips are provided in the concave portion 700 along the radial direction facing the ring-shaped terminals 614a to 614f existing on the disc surface. It is installed side by side. The contact terminals 616a to 616f are urged downward by the coil panel 618. In addition, dummy pins 616g to 6161 having the same shape as the contact terminals 616a to 616f are provided on the same line of the contact terminals 616a to 616f. These dummy pins 616g to 6161 are also provided in accordance with the intervals between the ring terminals 614a to 614f.

[0013] The optical disk 610 has a contact surface with the optical disk 610 excluding the recess 700 of the clamper 615. Then, the protrusion 615A of the clamper 615 is fitted into the center hole 610A of the optical disc 610, whereby the optical disc 610 is positioned with respect to the clamper 615. At this time, since the contact terminals 616a to 616f of the clamper 615 are provided in alignment with the intervals of the ring terminals 614a to 614f, the contact terminals 616a to 616f and the ring terminals 614a to 614a Correspondence with 614f is taken.

[0014] Since the contact terminals 616a to 616f are urged downward by the coil panel 618, electrical contact with the ring-shaped terminals 614a to 614f is performed.

Disclosure of the invention

Problems to be solved by the invention

[0015] As described above, conventionally, transmission / reception of signals between the electronic function unit mounted on the disk surface and the internal circuit of the disk drive device is mainly performed on the disk surface and the disk drive side, respectively. The wireless signal is transmitted and received through the antenna formed with. However, the formation of a powerful antenna requires the formation of a shape parameter suitable for the frequency of the radio signal, and the formation of a powerful antenna on the disk surface is a highly accurate etching process. It is also necessary to form a frequency conversion circuit from the Z radio frequency to the radio frequency that only requires the law, and low cost is a big problem for optical discs with great benefits

[0016] In particular, in the case of an optical disk, a thin metal film such as aluminum is formed on the surface, which becomes an obstacle to the transmission and reception of the antenna formed in close contact with the surface (micron order). This is the same for other disks, and there is a problem because there are many metal members that cause radio interference near the disk, including the disk drive device. In addition, the antenna mounted on a disk rotating at a high speed of several thousand ppm can be unstable both physically and electrically. Leakage may cause wiretapping, and conversely, problems of external interference will occur. Furthermore, the antenna arrangement direction has a great influence on the transmission / reception sensitivity, and stable transmission / reception sensitivity cannot be obtained. In addition, in order to mount a radio unit including an antenna on a disk, considering the standard and balance, it is necessary to make it as thin and small as possible, and problems arise in relation to performance. These problems are related to the disk with the antenna Force S It becomes even more prominent because it rotates very fast.

[0017] In addition, for a configuration in which optical signals are transmitted and received through the light emitting Z light receiving circuit formed on the disk side and the disk drive device side, the disk drive device that is a rotating body and the disk drive device that is a stationary body. Since the positional relationship changes between them at a very high speed, it is extremely difficult to realize the configuration.

[0018] Furthermore, when signal transmission / reception is performed between the electronic function unit and the internal circuit on the disk drive device side while the rotation by the disk drive device is stopped, the disk and the disk are rotated during disk rotation. Signals cannot be sent to or received from the drive device, and real-time signal processing is not possible.

[0019] Further, the disk drive device disclosed in Patent Document 6 is almost impossible to realize a stable and reliable operation only by increasing the cost with a very complicated configuration. The problem will be explained in more detail below.

[0020] Since the solid-state memory is small, the distance between the input and output terminals is also narrowed. Therefore, it is difficult to form the ring-shaped terminals formed on the disk surface in the radial direction. In the case of such portable devices and in-vehicle CD player devices, the relative position of the clamper and the disc may be displaced due to external force. The contact between the two contacts may be lost and sometimes even contact with the adjacent ring terminal. This is a more serious problem considering that the disk rotates at a high speed in several thousand revolutions, Z seconds. A further serious problem is that it is extremely difficult to place a plurality of longitudinal contact terminals in the clamper recess with high accuracy in such a narrow space, each having a coil panel, and these contact terminals on the disk. It is extremely difficult to accurately align with ring-shaped terminals installed at narrow intervals, and practical application is impossible.

[0021] In addition, electrical contact with the ring-shaped terminal is possible only after being biased downward by the contact terminal coil panel 618. However, if the coil panel deteriorates due to long-term use, the space or It may be impossible to use because of its complicated configuration, and the contact pressure changes and the electrical connection characteristics deteriorate.

[0022] Furthermore, since the solid-state memory is embedded in the disk, the manufacturing process becomes complicated and leads The wire must be embedded in the disk together with the solid-state memory, and the ring-shaped terminal must be formed with high precision in the radial direction by connecting to the lead wire exposed on the surface. It is impossible to replace the solid memory that has been buried.

[0023] In addition, since it is efficient in manufacturing to arrange the lead wire taken out from the solid-state memory in a direction directly above, a ring-shaped terminal is usually disposed directly above the solid-state memory. It is difficult to place ring-shaped terminals to be electrically connected apart from each other, which is a major factor in complicating the structure and increasing costs.

[0024] Furthermore, the solid-state memory is embedded in a disk having a thickness of about 1 mm at most, which causes a serious problem for semiconductors that are vulnerable to external shocks. Solid disk is embedded The tip of the contact terminal urged by the spring panel in the recess of the clamper is always struck by the point contact pressure, especially when the disk is clamped for the first time. This gives an impact to the embedded solid state memory. The impact on the solid-state memory cannot be overlooked because such an impact is applied to the solid-state memory each time the disc is played back or recorded by the disc drive device, and there is also a problem in extending the life.

[0025] In particular, in this structure, the electrical connection with the solid-state memory is premised on the existence of a clamper, which cannot be used in a disk drive device without a clamper.

[0026] Further, in this structure, on the premise that a passive element such as a solid-state memory is mounted on the disk, active elements such as a CPU are not considered at all. When an active element is mounted, a power supply for operation is required, but there is no disclosure or suggestion of a specific configuration for that purpose.

Accordingly, an object of the present invention is to solve the above-described problems and provide a disk drive device that enables reliable transmission and reception of signals between the disk side and the disk drive device side with a low cost and simple configuration. There is.

[0028] Another object of the present invention is to provide a low-cost and simple-configuration disk drive device that enables reliable transmission and reception of electrical signals between the disk and an external device, thereby significantly improving the expandability of the disk utilization field. Is to provide.

[0029] Still another object of the present invention is to provide a disk side and a disk drive device with a low cost and simple configuration. It is an object of the present invention to provide a disk drive device that enables reliable transmission / reception of a plurality of signals between storage devices.

Another object of the present invention is to provide a disk drive device that can be applied to a disk drive device that does not have a clamper.

[0031] Another object of the present invention is to provide a disk drive device capable of providing a power source easily and at low cost even when an active element or the like that requires a power source is mounted.

[0032] It should be noted that the present invention means all modes of signal transmission and reception between the disk side and the disk drive device side, and all electrical information such as "transmission", "reception", "transmission and reception", Including the mode of exchange of signals and power. Of course, the present invention is not limited to a disk drive device, but also applies to a disk used in the disk drive device and a signal transmission / reception system using the disk.

Means for solving the problem

[0033] In order to solve the above-described problems, the disk drive device according to the present invention employs the following characteristic configuration.

[0034] (1) In a disk drive device in which a disk on which an electronic function unit is mounted is placed on a turntable, and is clamped and rotated.

Around the opening hole of the disk, there are provided a plurality of first conductive parts formed in a thin film connected to the electronic function part and spaced apart in the circumferential direction.

On the side of the disk drive device, the protruding portion protruding after the insertion of the turntable on which the disk is placed and placing the disk is pressed and brought into contact with the first conductive portion during disk rotation and driving. A pressing connection member is provided to connect to each other,

First photoelectric conversion means electrically connected to the pressing member is provided at the periphery of the rotating shaft of the projecting portion of the turntable or at the other end of the rotating shaft,

On the disk drive device side, physically separated from the turntable, and provided with a second photoelectric conversion means at a position facing the first photoelectric conversion means,

A disk drive device that exchanges signals between the electronic function unit and the disk drive device side through the first and second conductive units and the first and second photoelectric conversion means.

(2) The disc with the electronic function is mounted on the turntable and clamped. In the disk drive device that is driven to rotate,

First and second photoelectric conversion means electrically connected to the pressing member are provided on the periphery of the rotating shaft of the projecting portion of the turntable and on the other end of the rotating shaft, respectively, on the disk drive device side. The turntable is physically separated from the turntable, and third and fourth photoelectric conversion means are provided at positions facing the first and second photoelectric conversion means, respectively.

A disk drive device that exchanges signals between the electronic function unit and the disk drive device side through the first and second conductive units and first to fourth photoelectric conversion means.

(3) In a disk drive device in which a disk on which an electronic function unit is mounted is placed on a turntable, and is clamped and rotated.

Sending and receiving signals between the electronic function part and the disk drive device side through the first and second conductive parts, the first and second photoelectric conversion means,

A battery is provided in a rotating part for rotating the disk,

On the disk from the battery via the pressing connection member and the first conductive portion A disk drive device for supplying power to the electronic function unit.

(4) In a disk drive device in which a disk on which an electronic function unit is mounted is mounted on a turntable and is driven to rotate by being clamped.

First and second photoelectric conversion means electrically connected to the pressing member are provided at the periphery of the rotating shaft of the projecting portion of the turntable and the other end of the rotating shaft,

The disk drive device side is physically separated from the turntable, and third and fourth photoelectric conversion means are provided at positions facing the first and second photoelectric conversion means, respectively.

Signals are exchanged between the electronic function unit and the disk drive device side via the first and second conductive parts, the first photoelectric conversion means to the fourth photoelectric conversion means, and the disk is rotated. Provide a battery in the rotating part,

A disk drive device for supplying power from the battery to the electronic function section on the disk via the pressing connection member and the first conductive section.

(5) The disk drive device according to any one of (1) to (4), wherein the battery is a rechargeable power source.

(6) The disk drive device according to (5), wherein the battery is charged by the output of the second photoelectric conversion means.

(7) The battery receives light from a charging light generating means provided with an axial position shifted from that of the first photoelectric converting means, and converts the electric light from the charging photoelectric converting means that converts the light into an electrical signal. The disk drive device according to (5), which is charged by output.

(8) The disk drive device according to (5), wherein the battery is charged by an electric signal obtained by receiving an external radio signal.

The invention's effect [0035] According to the present invention, reliable signal transmission / reception between the disk and the disk drive device is enabled, thereby enabling reliable transmission / reception of electrical signals between the disk and the external device, that is, recording on the disk. 1 or more electronic function units (including a configuration necessary for circuit operation such as a signal processing circuit and a memory, a battery, etc.) mounted on the disk. Signal transmission / reception between the external device and an external device can be made possible with a simple configuration. Further, other functions such as power supply to the electronic functional unit to the disk and power supply to the battery mounted on the disk can be achieved easily and reliably. Therefore, it becomes possible to specify a specific operation based on the function of one or a plurality of electronic function units formed on each disk, and the expandability of the application field using the disk is remarkably improved. The In addition, by simply forming an electronic functional part such as a thin film IC and a conductive part such as a thin film electrically connected to the electronic functional part on the surface of a normal disk, the application range is significantly expanded. Configuration disks can be obtained with minimal cost increase. In addition, the disk drive for accessing the available disk can be simply added, and a disk drive device with minimal cost increase can be obtained. Such an effect is particularly remarkable when using an optical disc that is extremely inexpensive and can provide a large recording capacity. According to the present invention, signal transmission / reception between the disk and the disk drive device can be performed at high speed and stably with almost no restrictions on the speed and data amount.

In particular, in the present invention, even when the disk is rotating, the conductive part connected to the electronic function part mounted on the disk and the holding and gripping part for rotating the disk of the disk drive integrally. The conductive part formed on the disk is in direct contact and is electrically connected, so the conductive part on the disk side and the disk drive side is gripped and clamped by a strong pressure contact force (usually surface pressure). Therefore, a stable and reliable electrical connection can be obtained. Radio interference due to metal films formed on the disk surface and surrounding metal members is not a problem at all, and there is no risk of eavesdropping due to radio leakage due to external electromagnetic waves, etc. There is no problem, and there is no restriction on signal transmission (communication) speed! ,.

[0037] Further, in the present invention, various modes of electrical paths for reliably connecting the disk and the conductive portion on the disk drive device side can be easily obtained, and these various connection modes can be used simultaneously or appropriately. Therefore, various application fields can be obtained by using several combinations.

[0038] Further, in the present invention, the connection with the other part of the conductive part is not required at all, and the arrangement of the electronic functional part and the conductive part, which are only required to be simply connected, is arbitrarily determined according to the application. It can be set at the position.

[0039] In the present invention, since the electronic function unit and the like are disposed at a position where they do not come into contact with the clamper turntable on the disk drive device side, that is, do not receive the clamping pressure at all. In addition, it is not subject to constant point contact pressure or clamping pressure from the tip of the contact terminal that is biased by the spring panel inside the clamper recess. Longer life can be achieved.

[0040] Furthermore, an electric path having a plurality of conductive parts can be easily formed on the disk, and a plurality of signal lines can be formed in the electronic function part and a signal line can be formed in the plurality of electronic function parts. Thus, the mounted circuit can be expanded.

[0041] Furthermore, in the present invention, it is not necessary to have a power source to be supplied to the electronic functional unit mounted on the disk on the disk side, and a marked reduction in disk cost and operational stability can be obtained. The power supply is provided on the disk drive device side, especially on the part that rotates integrally with the disk (for example, the protrusion where the disk opening hole of the turntable is inserted), and the power supply can be removed and charged. Since it can be charged while attached, the configuration is simple and the cost is low.

[0042] The power source can be charged using a known non-contact charging means. When the power source provided in the rotating part on the disk drive side is a solar cell and is charged with light, the light source can be configured to be provided with a light source at an opposing position, for example, so that an external force is also applied to the power source. In addition, when the power source is a power source that can be charged with a high-frequency signal such as a radio wave, a signal source can be provided so that an electromagnetic wave signal such as a radio wave signal is externally supplied to the power source. When charging with normal current, external power can be supplied to the power supply via the slip ring.

[0043] It should be noted that such an effect is not limited to a disk and a disk drive device, but can be obtained even with a structure based on the same basic principle. Other effects of the present invention will become apparent in the description of the following examples. Brief Description of Drawings

FIG. 1 is a simplified disk configuration showing an example of a disk to which a disk drive device according to the present invention is applied.

FIG. 2 is a simplified cross-sectional view of the main part of the disk and the disk drive device according to the present invention. FIG.

FIG. 3 is a simplified plan view of the turntable side in the present invention.

FIG. 4 is a simplified cross-sectional view of an essential part showing an example of a press connection member in the present invention.

FIG. 5 is a perspective view schematically showing a principal part of a specific configuration for defining the positional relationship between the disk used in the present invention and the disk drive device side.

FIG. 6 is a perspective view schematically showing a principal part of another specific configuration for defining the positional relationship between the disk used in the present invention and the disk drive device side.

FIG. 7 is a schematic cross-sectional view of a main part schematically illustrating a configuration of a conventional disk drive device.

Explanation of symbols

[0045] 1 optical disc

111, 111A-111C Electronic function

112, 112A-112C

113, 113A-113C

100 opening hole

20 Turntable

21A Rotating shaft protrusion

21B The other end of the rotating shaft

3A-3C, 25 Press connection member

31A to 31D, 32A, 32B, 33A, 33B Electrical nose

4A, 4B, 5A, 5B connection interface

Example

Hereinafter, a specific configuration example of the embodiment of the present invention will be described with reference to the drawings.

The present invention relates to a rotating storage medium including a disk and a signal transmission / reception by rotationally driving the medium. Any disk, card, etc. (for example, any storage medium that can be rotated and driven by holding, holding, clamping and holding by the disk holding and holding means of the disk drive device) It can be applied to CD, DVD, MO, MD, FD, HD, etc.).

A disk to which the disk drive device according to the present invention is applied is a disk on which an electronic function unit such as an electronic circuit is mounted, and a simplified disk configuration showing an example is shown in FIG. It is shown. 2 and 3 show a simplified cross-sectional view of the main part of the disk and the disk drive device side and a simplified plan view of the turntable side.

In FIG. 1, the disk 1 has an opening hole 100 that is inserted into the projecting portion of the turntable to determine the position of the disk, and at least one (in this example) along the circumferential direction of the opening hole 100 Then, three conductive portions (electrodes) 113A to 113C are provided. The conductive portion can also be formed in a ring shape spaced apart in the radial direction.

[0049] At least one electronic function unit 111 such as a CPU is provided on the surface or inside of the disk 1. For example, the conductive units 113-8 to 113 are connected to the terminals of the electronic function unit 111. 1 Each is electrically connected via 12C. The installation position of the electronic function unit 111 is preferably a non-recording area on the inner periphery of the disc 1. By arranging the electronic function unit on the turntable in this way, even when heavy components such as the electronic function unit are mounted on the disk, the influence of the rotational balance of the disk is eliminated. .

[0050] The opening hole 100 of the disc 1 is inserted into the protrusion 21A of the turntable 20 and positioned. When the disc 1 is placed on the turntable 20, the clamp members 3A to 3C (such as pressing connection members) provided in the circumferential direction of the protruding portion 21A (contact portion with the disc 1) of the turntable 20 As a result, the inner peripheral portion of the opening hole 100 of the disc is also pressed (locked) by the upward force, and the disc is gripped, held, and clamped (held and held necessary for rotation) with the turntable 20.

In this embodiment, as shown in FIGS. 2 and 3, a plurality of press connection members 3A to 3C are provided in the circumferential direction of the protruding portion 21A of the turntable 20 (for example, three at equal intervals). A biasing force is exerted in the outer diameter direction (and Z or downward) by a panel member (not shown) provided in the projecting portion 21A. From above Push in to fix.

That is, when the disk 1 is placed on the turntable 20 by staking the central opening hole 100 of the disk 1 into the projecting portion 21A from above and pressing it into the spring force of the connecting members 3A to 3C, After the pressing connection members 3A to 3C are retracted inward (inside the dotted line), they enter the upper surface of the disk 1 to fix the disk 1 between the clamp members 3A to 3C and the turntable 20 with a strong force.

[0053] The disk drive device having such a configuration is simplified in structure because it does not require a clamper for fixing the disk upward force disk, and is reduced in thickness. It is often applied to small electronic devices such as notebook computers, DVD devices, and game consoles.

[0054] At least part of the contact portions of the pressing connection members 3A to 3C with the disc 1 is provided with a conductive portion, and electrical connection with the corresponding conductive portions 113A to 113C on the disc 1 side is performed when the disc is placed. Established. Thus, an electrical connection is established between the electronic function unit 111 of the disk 1 and the disk drive device side.

Here, the electrical connection between the conductive portions 113A to 113C of the disk 1 does not need to be a clamp portion member as shown in the figure, and the conductive portions 113A to 113C of the disk 1 are electrically connected to the electrical portions when the disk is driven. Any configuration means may be used as long as it is connected to the network. For example, a member having a conductive portion is normally stored in the protruding portion 21A, and after mounting the disc, the member is protruded from the protruding portion, and the conductive portion is securely connected to the conductive portion 113 of the disc 1. It is possible to adopt a configuration that presses from above so as to be electrically connected. The structure of these members can be arbitrarily configured to operate in response to an operation by a user or the like.

[0056] Further, the pressing connection member may be in any position and in any configuration as long as it is a portion or structure that does not hinder the insertion and removal of the disc. For example, a pressing connection member having a similar function can be provided on the upper portion of the protruding portion 21A.

In this embodiment, at least one conductive portion 113A to 113C is formed in the circumferential region of the inner peripheral end of the opening hole 100 of the disk 1, and in this example, three conductive portions 113A to 113C are formed. It is electrically connected to the corresponding pressing connection members 3A to 3C of the 113 and the protrusion 21A of the turn table 20. In the present embodiment, the electronic function unit 111 electrically connected via the connection unit 112 is mounted on the upper surface of the disk 1. An information recording surface is formed on the turntable 20 side of the disk 1 (the lower surface of the disk), and information is written and read by an optical pickup. On the other hand, an electronic function unit 111 and the like are mounted on the upper surface of the disk. Therefore, the usability and design flexibility are expanded, such as the installation of multiple electronic functional units, etc. that are not subject to physical restrictions such as the optical pickup drive mechanism. If a similar conductive portion is formed on the inner peripheral wall of the opening hole 100 in addition to the circumferential region at the inner peripheral end of the disk opening hole 100, more reliable electrical contact can be obtained. These conductive portions come into strong contact with the press connection members 3A to 3C, and reliable electrical contact is obtained.

[0059] In this embodiment, as shown in Figs. 2 and 3, the signal exchange connection between the disk side that is the rotating part (for example, the protrusion 21A of the turntable) and the disk drive side that is the stationary part. A photoelectric conversion element as an interface portion, in this example, a phototransistor 4A is provided along the axis at or near the rotation center axis of the protrusion 21A, and the protrusion 21A (an arbitrary position such as inside or above) ) A battery 6 is provided. Of course, other electronic functional units can be provided. The notch 6 can be used as a driving power source for the phototransistor 4A, and the notch 6 is pressed through at least one of the connecting members 3A to 3C and the conductive portions 113A to 113C of the disc 1 through the disc. It can also be supplied as a power source to the electronic function unit 111 on 1. In this case, there is no need to mount a power source on the disk, so that there are very remarkable effects such as cost and operational stability. Since the inside of the protruding portion 21A is usually a cavity, there is no problem in mounting these components in the cavity.

In the embodiment shown in FIG. 3, signal exchange and power supply are performed with the electronic function unit 111 on the disk via the pressing connection members 3A to 3C. The notch 6 is connected to the press connection members 3A to 3C and the connection interface unit 4A via the electric paths 32B, 32C, and 32D. Further, the pressing connection member 3A is connected to the connection interface unit 4A via the electric path 32A.

[0061] The battery 6 may be removable so that it can be recharged when needed, or may be discarded. Of course, as will be described later, it is electrically Z-optically Z-electromagnetically charged while mounted. I'll do it for you.

As in the present embodiment, it is also possible to supply power directly to the electronic function unit without providing the battery 6 on the disk 1 side. If the notch 6 is provided on the side of the rotating body such as a turntable, the clamp pins 3 8 to 3 are connected in a static state via the conductive parts 113 8 to 113, etc. Supply is smooth.

[0063] The battery (power source) can be charged using a known non-contact charging means. When the battery provided on the rotating part side of the disk drive is a solar cell and is charged with light, it is only necessary to apply external light to the power source. For example, a light source (charging means) can be provided at the opposite position along the rotation axis. Of course, if the solar cell is not limited to the facing position but should be provided at a position where it can irradiate charging light, the solar cell can be rotated around the rotation axis of the projecting part of the turntable. The solar cell can be charged at all times by installing it at a ring-like position. Even if it is not formed in a ring shape, charging is possible because the solar cell is irradiated intermittently with the rotation of the rotating body, that is, once per rotation. In addition, when the battery is a power source that can be charged with a high-frequency signal such as a radio wave, a signal source is provided at the same position in order to supply an electromagnetic wave signal such as a radio wave signal from the outside (charging means) to the power source. It can be configured as follows. In the case of radio waves, the propagation range is wide, so the signal source can be installed at a position where the rotation center axis force is wide and the radio wave can be emitted from the outside of the disk drive device. The Further, when the power source is charged with a normal current, the power source (charging means) can be supplied to the power source via the slip ring.

[0064] Photoelectric conversion means 4A and an antenna for radio wave transmission / reception are provided on the upper surface of the protruding portion 21A, and the converted electrical signal (the signal for communication with the electronic function unit 111 or the signal for charging the battery) is connected to the battery. If it is supplied to the interface means, signal exchange and battery charging can be performed simultaneously. As described above, the battery can be charged at the same time during communication, or optionally, for example, when communication is stopped. Similarly, a means for receiving a charging signal (photoelectric conversion means, antenna, conductive part for slip ring, etc.) is provided on the rotating shaft part 21B opposite to the protruding part 21A, and the charging signal is supplied to the battery 6. It can be configured to supply and charge. [0065] The arrangement of the battery as described above is not limited to the present invention, and may be a structure in which an electrical path is established by electrical contact between the disk and the conductive part on the disk drive side. All are applicable.

[0066] As in this embodiment, it is necessary to provide the disk with a power source for supplying power to the electronic circuit (CPU, memory, etc.) mounted on the disk by providing the notch on the rotating side. Disappears. Therefore, a significant cost reduction effect of the disk can be obtained, and the problem that the disk cannot be reproduced due to the defective battery can be solved without the need to replace the battery when the battery is exhausted.

The electronic circuit as the electronic function unit 111 includes various configurations as will be described later, and may include arbitrary components such as a CPU and a memory and arbitrary components such as a battery. Of course, it is possible to include a part of these components, and the configuration is preferably a thin film configuration. An electronic circuit or the like means an arbitrary functional unit such as an optical functional unit that is not necessarily limited to an electronic functional unit, and can be anything as long as input / output is electrical.

In the above, it is assumed that the electronic circuit as the electronic function unit 111 is fixedly mounted on the disk surface. However, the electronic function unit 111 may be embedded in the disk. A configuration in which the electronic functional unit 111 and the like are mounted on the disk so that they can be replaced as appropriate is also useful. In this case, a locking portion for mounting and locking the electronic function portion (chip) is provided at the mounting position of the electronic function portion of the disc, and the electronic function portion (chip) is attached to this locking portion. Suffice to lock. Terminals connected to the conductive parts 112A to 112C connected to the input / output terminals of the electronic function part 111 can be fixedly arranged and connected to the locking part. Needless to say, this embodiment can be applied to all disks on which electronic function units and the like are mounted. In other words, by attaching an electronic function chip possessed by a specific individual to a disk that uses a large number of disks, it becomes possible to use a large number of disks as disks specific to a specific individual.

[0069] That is, according to the configuration that works, when a mounted electronic function unit (chip) fails, it can be easily replaced with a new electronic function unit. In addition, it is possible to easily mount electronic circuits and electronic function units specific to users and discs, and for example, it is possible to have information such as discs and different encryption information and information for each user. Therefore, in use If only the electronic function part is installed and installed, and the electronic function part is removed at the end of use, access by a third party becomes impossible, and security is greatly improved. Also, if the reproduction of digital contents such as CDs and DVDs requires the presence of key data stored in the chip, unauthorized copying can be completely eliminated by removing the chip.

The electronic function unit 111 is, for example, a circuit that executes an operation process based on a program recorded in the ROM area of the disk surface, and the processing result is transmitted to the disk drive device side. Conversely, it receives a signal from the disk drive side force. The electronic function unit 111 may be configured to perform an operation based on a program recorded in another recording medium as described above, or may be configured so that the operation executes a predefined operation. Naturally, it is assumed that the memory is included. In short, the configuration is arbitrary, including the memory function, etc., and the electronic function section is good if the input / output is an electric signal. Is optional, such as light processing.

[0071] The predetermined processing of the electronic function unit 111 is, for example, predetermined when the information recorded in the recording unit is encrypted and the encrypted information is read out. There is a process to decipher based on the program. Similarly, when writing in encrypted form, it can also be configured to perform encryption based on a predetermined encryption program.

[0072] For example, a housing of a disk drive device is disposed on the side of the protruding portion 21A facing the phototransistor 4A, and a phototransistor 5A is disposed on the facing portion to transmit and receive an optical signal. Done. Here, the connection interface means is not optically limited, and it is needless to say that an electromagnetic or slip ring structure means (rotating shaft slip ring) can be used.

[0073] If an encryption program and a decryption program are defined for each disk, closed signal processing that does not require any external force information is possible for each disk, and the closed unique processing is possible. As long as the process is not based on this process !, as long as it is difficult to access the disk, high security can be ensured. In addition, higher security can be ensured by individually setting keys for decryption from the outside. In addition, external processing The processing result processed by the circuit may be recorded in the recording unit. In this way, the processing results are stored and recorded only in the RAM area as a recording section of the disk that does not remain in the external processing device, and the data to be stored and recorded is processed by the electronic function section such as an encryption key. If processing is performed, a third party cannot obtain decryption data unless there is a decryption program including key information for decrypting the encrypted data, and a highly secure system can be realized. In addition, signal transmission / reception between the electronic function unit and the like formed on the disk and the external circuit can significantly expand the use fields that have not been envisaged so far. In other words, since the electronic function unit has a unique processor function as a CPU, a function as a memory, an execution function of a unique processing mode, etc., it is related to a disk and functionally and organically. Extension to the field becomes possible.

[0074] As described above, the connection interface units 4A and 5A (4B and 5B) mean that they have an interface function, and components such as photoelectric conversion means and drive circuits are included in the unit. These which do not need to be provided may be provided at any position. For example, an optical fiber can be provided as a connection interface on the rotating shaft end or printed circuit board side, and an optical signal can be exchanged between the optical fibers. The same applies to the case where radio is used, and other components that only need to be provided with an antenna at the end can be provided at other parts. Needless to say, the connection interface unit may be provided in a place other than the above-described parts.

Now, the optical signal received by the phototransistor of the connection interface unit 5A is converted into an electric signal, and the converted electric signal is sent to the disk drive device or an external circuit unit. In addition, reverse route signal transmission is performed.

[0076] As described above, the connection by the optical means and the wireless means provided close to the rotation axis center (along the rotation axis) of the rotation shaft portion of the protrusion 21A is close to each other. Connection (communication) is possible even if the intensity of light and radio waves is weak, and it is also effective in terms of security because it can reduce the influence of external interference and noise with little risk of leaking outside. In other words, the installation of the optical means and the wireless means along the axis of the rotating shaft portion requires less signal light blur due to the rotation of the rotating shaft portion, and signal transmission / reception may also be performed by the wireless means. Efficient transmission / reception is possible. These are all described below This embodiment is used for exchanging signals between the rotating member and the stationary member of the disk drive device, and the same effect can be obtained.

[0077] In the above description, the conductive portions on the disk side and the disk drive device side need not always be formed in correspondence with each other, even though there is no conductive portion corresponding to the conductive portion. The function to perform can be disabled. Therefore, the number and position of the conductive parts formed on the disk side are determined uniquely for the disk, and on the disk drive device side, signals are exchanged only with the conductive parts formed on the disk side. be able to. Therefore, even if the disk is a normal disk having no conductive portion or the like, the disk drive device can operate normally and maintain compatibility.

The configuration of the preferred embodiment of the present invention has been described in detail above. However, it should be noted that such examples are merely illustrative of the invention and do not limit the invention in any way. Those skilled in the art can easily understand that various modifications and changes can be made according to the specific application without departing from the gist of the present invention.

[0079] Information acquired from the electronic function unit of the disk by the disk drive device is processed by a processing device such as an external computer, and processed by a signal processed by the processing device or an electronic function unit. The signal can also be configured to be written in the RAM area of the disk, in the electronic function unit, or in a separate memory, and the processing is optional.

FIG. 4 shows an example in which the pressing connection member is normally housed in the protruding portion 21A and is exposed at the time of disc clamping so as to be in contact with the conductive portion 2. Normally, it is housed in the protruding portion 21A, and at the time of clamping, as shown by the dotted line in the figure, it is rotated approximately 90 degrees to obtain electrical connection with the conductive portion 113. As this connecting member, for example, a member having a wide and long flat conductive part is used. In a normal state in which no dick is placed, after placing a force disk substantially stored in the protruding part on the turntable, Automatically or manually, the connecting part of the pressing connection member rotates approximately 90 degrees, falls to the disk side, presses against the disk surface and comes into close contact, and between the disk and the conductive part of the connecting member It can be configured to establish an electrical connection relationship. When the disk is placed and driven to rotate, it is preferably in close contact with the conductive portion of the disk surface by being pressed with a strong surface pressure having a contact area as large as possible. In addition, the press connection member 25 shown in FIG. 4 has a conductive portion 27 that is normally housed in the protruding portion 21A and is exposed during contact with the conductive portion 113 during the descriptor lamp. The pressing connection member 25 is connected to the connection interface 4A via the conductive portion 28 and the connection line 33A. In FIG. 4, it is normally housed in the protruding portion 21A, and at the time of clamping, as shown by the dotted line in the figure, it is rotated approximately 90 degrees around the rotating shaft 26 to obtain electrical connection with the conductive portion 113. . As this pressing connection member, for example, a member having a wide and long planar conductive portion is used. In a normal state where the disc 1 is not placed, the force disc 1 that is substantially stored in the protruding portion 21A is placed on the turntable 20. After placement, the pressing connection member 25 is automatically or manually rotated approximately 90 degrees, tilted to the disk 1 side, is pressed against the disk surface and brought into close contact, and the conductive portion of the disk 113 And the electrical connection relationship between the conductive portions 27 of the pressing connection member 25 can be established. When the disc is placed and driven to rotate, it is preferable that it is pressed and adhered to the conductive part of the disc surface with a strong surface pressure that has as large a contact area as possible! The connection interface unit 4B can also be provided on the other end 21B side of the rotating shaft of the turntable 20, and is connected to a predetermined pressing connection member (not shown) via the connection line 33B.

[0082] As described above, when a plurality of conductive portions are formed on each of the disk side and the turntable side, alignment between the respective conductive portions may be necessary. In other words, when a signal transmission / reception relationship with a specific circuit unit such as a disk drive device or an external device (personal computer) is specified, a specific circuit corresponding to the electronic circuit to which the conductive unit is connected It is necessary to fix the electrical connection relationship. Various means can be considered for this purpose.For example, it is possible to mark each of the disk 1 and the turntable 20 side, or to provide a physical specific shape portion, and to position by the relative relationship of these physical specific shape portions. . It is also possible to determine the optical, electrical, and magnetic relationship between the two, and to perform positioning based on these relationships. For example, a magnet can be provided in each, and uniform positioning can be performed by the magnetic force of both magnets. Further, optical target positions can be provided to each other, and these target positions can be matched.

In FIG. 5, as a positioning mechanism according to the present invention, a radial slit or notch (hole) 11 is formed in a predetermined part (preferably on the inner periphery) of the disk 1, while the turntable 20 Clash The outer wall of the protruding portion 21A is provided with a convex portion 21 into which the slit 11 enters, and the convex portion 21 is inserted (fitted) into the slit 11 of the disc 1 so that the corresponding positional relationship between them can be uniquely positioned. . The positioning here is a positioning that ensures that the corresponding conductive parts come into contact with each other, and the width of the conductive parts is relatively wide. Therefore, the positions and sizes of the slits 11 and the convex parts 21 are highly accurate. There is no need.

FIG. 6 shows another embodiment of the positioning mechanism. In the present embodiment, a hole 12 is provided at a predetermined portion (preferably at the inner periphery) of the disk 1, while a convex portion 22 that enters the hole 12 is provided on the turntable 20, and the hole 12 of the disk 1 is protruded. The part 22 is inserted (fitted), and the corresponding positional relationship between them is uniquely positioned. Positioning here is also positioning that ensures that the corresponding conductive parts are in contact with each other, and the width of the conductive parts is relatively wide. There is no.

[0085] In a configuration in which the disc is automatically loaded, the notch is made large, and the disc is shuffled in the circumferential direction when the disc is inserted into the protruding portion of the turntable. The protrusion 21 can be configured to be fitted. Also, in the initial state when the disk is placed, the absolute position of the convex part of the rotation axis of the turntable is determined in advance, and the convex part is always positioned in the circumferential direction during loading, etc. It is also possible to adopt a configuration in which the positional relationship of the disc is controlled so that a notch or slit is positioned at a position that matches the absolute position of the convex portion.

[0086] Provided with switching means for receiving and outputting the output from the conductive portion without performing unambiguous positioning on the disk and turntable side, and configured to selectively send the corresponding signal to the corresponding connection destination You can also In this case, it is possible to include some identification signal in the signal, determine the identification signal of the received signal, and perform transmission to the corresponding connection destination based on the determination result. Of course, this switching means can be provided on the external circuit side.

[0087] Such positioning and switching methods are not limited to these embodiments and the embodiments described later, and of course, when performing correspondence between a plurality of corresponding conductive portions on the disk and the disk drive device side, etc. It is clear that everything is applicable.

[0088] With the configuration as described above, electrical connection between the disk-mounted electronic function unit and the disk drive device is performed. A path is established, and signals are exchanged between the disk side and an electronic device (such as a personal computer or a game machine) to which the disk drive device is connected.

By the way, the configuration in which a plurality of spaced conductive portions are formed in the circumferential direction of the disk in this way is very effective for obtaining a plurality of electrical paths. The force conductive portion needs a predetermined length. Therefore, the number of conductive parts to be formed is limited. As the number of electronic circuits on the disk increases, the number of electrical paths required increases, making it impossible to handle them. Therefore, in the present invention, a plurality of spaced-apart conductive portions are formed along the circumferential directions of a plurality of circumferential directions at different radial distances, thereby connecting members such as clamp pins on a large number of disk drives. Can be connected.

In the above embodiment, the conductive portion formed on the disk surface may be a simple conductive film, and can be easily formed by vapor deposition. Further, the conductive film can be attached to the surface, or can be formed by any other method than vapor deposition.

[0091] In a configuration in which an antenna for transmitting and receiving radio signals is provided on each of the disk and the disk drive device side, the antennas can be spaced apart from each other. Reliable communication is possible with little influence from noise and almost no signal leakage to the outside. In order to avoid direct contact between both antennas, at least one antenna surface is covered with a protective film (for example, an insulating film).

The configuration of the preferred embodiment of the disk drive device and the disk according to the present invention has been described above in detail. However, it should be noted that such examples are merely illustrative of the invention and do not limit the invention in any way. Those skilled in the art can easily understand that various modifications and changes can be made according to the specific application without departing from the gist of the present invention. In other words, the present invention is not limited to the disk drive device and the disk described in the above-described embodiments, but the rotating material rotates in contact with a rotating member that is held (gripped) by a holding (gripping) member and rotated. The same applies to the material and the rotation mechanism.

[0093] In addition, the shape of the conductive part (electrode part) on the disk and the disk drive device side is arbitrary, but in order to obtain a more reliable electrical connection, the shape (one One may be concave and the other convex). This way, both discs are rotated. A more reliable connection is possible without any deviation in the circumferential direction of the person. At this time, the material can be an elastic material. With such a configuration, reliable electrical contact without positional deviation can be obtained.

[0094] Information acquired from the electronic circuit of the disk by the disk drive device is processed by a processing device such as an external computer, and a signal processed by the processing device or a signal processed by the electronic circuit is processed by the disk. It can also be configured to write to the RAM area, electronic circuit, or a separate memory, etc., and the processing is optional.

In the above-described embodiment, the electronic circuit can be embedded in the disk, and by doing so, it is possible to avoid dirt and scratches from external force (hands, oil, etc.). In addition, the electronic circuit formed on the disk surface is covered with some insulating material to prevent the electronic circuit and memory from being contaminated and shocked, as well as against water.

[0096] When a plurality of electronic circuits are mounted outside the disk clamping area, the balance of the entire disk can be maintained by installing each electronic circuit at a position symmetrical to the central force of the disk. . In this case, the conductive portions are separated from each other in the radial direction on the disk and the disk drive device side to avoid electrical contact with each other. Similarly, when a pair of electronic circuits is mounted, the pair of electronic circuits can be formed at symmetrical positions with respect to the center of the disk aperture.

As is apparent from the above description, the present invention can be used even with a normal disk not equipped with an electronic circuit. That is, when a disk not equipped with an electronic circuit is used in the disk drive device according to the present invention, no conductive part is in contact with the conductive part on the disk drive device side. It can be operated as a device.

By the way, the configuration in which a plurality of spaced conductive parts are formed in the circumferential direction of the disk in this way is very effective for obtaining a plurality of electrical paths. The force conductive part needs a predetermined length. Therefore, the number of conductive parts to be formed is limited. As the number of electronic circuits on the disk increases, the number of electrical paths required increases, making it impossible to handle them.

Therefore, in the present invention, for the purpose of increasing the number of conductive portions formed on the disk, a plurality of spaced conductive portions (corresponding to 113 and the like) are provided at different radial distances along the respective circumferential directions. Form. In this case, the pressing connection members (see Fig. 2 and Fig. 3) must be Of course, it is configured to be electrically connected to the conductive portion formed at a distance.

In this embodiment, in order to simplify the description, the force that all components are formed and mounted on one surface side, as in the above-described embodiment, the electronic circuits 4A to 4D on one surface side Connected parts 30 and 31 to 38, and the vertical connecting part between the conductive parts 2A (R1) to 2D (R1) and 2A (R2) to 2D (R2) formed on the other side of the disk as described above It can be configured to connect via (not shown).

[0101] The present invention is not limited to the above-described embodiments, and can be applied to all cases where conductive portions separated along the circumferential direction of the disk are formed.

Claims

The scope of the claims

[1] A disk drive device in which an electronic function unit is mounted is placed on a turntable, clamped, and driven to rotate.

A disk drive device characterized in that signals are exchanged between the electronic function unit and the disk drive device side via the first and second conductive units and the first and second photoelectric conversion means.

[2] A disk mounted with an electronic function unit is placed on a turntable, clamped, and rotated by a disk drive device.

The electronic device via the first and second conductive parts and the first to fourth photoelectric conversion means. A disk drive device that exchanges signals between a function unit and the disk drive device side.

[3] A disk mounted with an electronic function unit is placed on a turntable, clamped, and rotated by a disk drive device.

A battery is provided in a rotating part for rotating the disk,

The disk drive device, wherein the electronic function unit power on the disk is supplied from the battery via the pressing connection member and the first conductive part.

[4] A disk drive device in which an electronic function unit is mounted is placed on a turntable and is clamped and rotated.

On the disk drive device side, physically separated from the turntable, Third and fourth photoelectric conversion means are provided at positions opposed to the first and second photoelectric conversion means, respectively.

Signals are exchanged between the electronic function unit and the disk drive device via the first and second conductive units and the first to fourth photoelectric conversion units, and the disk is rotated. Install a battery in the rotating part

A disk drive device characterized in that power is supplied from the battery to the electronic function section on the disk via the pressing connection member and the first conductive section.

5. The disk drive device according to any one of claims 1 to 4, wherein the battery is a rechargeable power source.

6. The disk drive device according to claim 5, wherein the battery is charged by the output of the second photoelectric conversion means.

[7] The battery receives light from a charging light generation means provided with an axial position shifted from that of the first photoelectric conversion means, and converts the electric power from a charging photoelectric conversion means that converts the light into an electric signal. 6. The disk drive device according to claim 5, wherein the disk drive device is charged by output.

8. The disk drive device according to claim 5, wherein the battery is charged by an electric signal obtained by receiving a radio signal from the outside.