WO2007007567A1

WO2007007567A1 - Disk drive device

Info

Publication number: WO2007007567A1
Application number: PCT/JP2006/313075
Authority: WO
Inventors: Masahiro Fukuyama; Tetsuji Fukuyama
Original assignee: Hiro 21 Corporation
Priority date: 2005-07-07
Filing date: 2006-06-30
Publication date: 2007-01-18
Also published as: JPWO2007007567A1; JP2007042256A

Abstract

A disk drive device and disk drive signal processing system capable of supplying an electric power to an electronic functional unit, with simple configuration and at low cost. A battery for supplying an electronic power to an electronic circuit mounted on a disk is provided in a rotation unit that integrally rotates with the disk, which is driven to rotate by the disk drive device. The battery can be a rechargeable battery capable of being charged while the disk is driven or anytime when needed. The charging is performed optically, magnetically, or electrically.

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 despite being composed of extremely inexpensive materials such as resins such as polycarbonate. Most promising as a recording medium.

A disk drive device is used to read information recorded on an optical disk or write information (read / write). A disk drive device places an optical disk on a turntable, clamps it with a clamper, rotates it with a spindle motor, emits laser light, receives reflected light from the surface of the optical disk, and demodulates it. The recording signal is read out. Patent Documents 1 to 3 disclose typical configuration examples of powerful disk drive devices.

[0004] Patent Document 1: JP-A-11-353749 (paragraph number [0024] FIG. 1)

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

Patent Document 3: Japanese Patent Laid-Open No. 2000-100032 (paragraph numbers [0012] to [0017] FIG. 1)

[0005] Incidentally, there has been proposed an optical disk in a form in which an electrical circuit such as an electronic function unit that extends only on a recording area is mounted on the optical disk. 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 and reception between the functional unit and the internal circuit on the disk drive device side is not easy.

[0006] As a disk drive device for a kind of optical disk, a wireless signal is used for transmission and 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 / receiving circuit is formed on each of the optical disk side and the disk drive side.

A configuration for transmitting and receiving an optical signal through the light emitting / receiving circuit is also conceivable, but there is no actual proposal.

Furthermore, a configuration has also 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 Document 5). reference).

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. 5A and 5B.

Patent Document 6: JP-A-5-54460 (FIG. 1, paragraph numbers [0013] to [0028])

In this disk drive device, a solid-state memory 612 is embedded in a disk 610, and input / output terminals DI, DO, CS, SCK, VD 0 of the solid-state memory 612 are shown as lead wires (eg, 613). ) Are drawn out (embedded in the solid-state memory 612), and concentric ring-shaped terminals 614a to 614f (only 614 are 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, and these external contact terminals are signal transmission media (specific configuration unknown) ) 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 a coil spring 618. Further, dummy pins 616g to 6161 having the same shape as the contact terminals 616a to 616f are provided on the same line as 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 biased downward by the coil spring 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 formed on the disk surface and the disk drive side, respectively. Radio signals are transmitted and received through the antenna. However, the formation of such an antenna requires formation with shape parameters suitable for the frequency of the radio signal, and the formation of force on the disk surface and the formation of the antenna requires only a highly accurate etching technique. Therefore, it is necessary to form a frequency conversion circuit from the Z radio frequency to the radio frequency, and this is a big problem for optical discs where low cost has 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 is 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 also 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 become even more pronounced because the disk on which the antenna is mounted rotates very fast. [0017] In addition, the configuration is such that optical signals are transmitted and received through light emitting / receiving circuits formed on the disk side and the disk drive device side, so that the disk is a rotating body and the disk drive is a stationary body. Since the positional relationship changes between devices at a very high speed, it is very 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 in a state where rotation by the disk drive device is stopped, the disk and disk drive are rotated during disk rotation. Signals cannot be sent to and received from the equipment, 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] Each contact terminal 616a to 616f has a sharp tip and is configured to be biased downward by a coin panel 618 in the recess 700 of the clamper and is in electrical contact with the ring terminal. . However, these contact terminals 616 & 616 are energized by the coil spring 618 only for electrical contact, so that there is no slippage or slippage when the disk is rotated. The clamp function that holds and holds the disc is basically different and does not have a clamp function. It is the portion excluding the concave portion 700 that is in surface contact with the disk 610 of the clamper 615 that performs the clamping function. The contact terminals 616a to 616f with sharp tips are biased downward by the coil spring 618 in the recess 700 of the clamper, so that the disk 615 is pressed downward (vertical direction) to make electrical contact with the ring-shaped terminal. However, since it is basically a point contact, it cannot suppress displacement and slip in the horizontal direction (rotation direction) and does not perform the clamping function. In addition, the electrical connection must be unstable due to coil panel characteristics and deterioration of the characteristics.

[0021] Further, 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 a portable device such as a CD player or an in-vehicle CD player device, the relative position of the clamper and the disc may be displaced by an external force. The contact with the terminal comes off and sometimes the next ring-shaped end There is even the risk of contact with the child. This becomes a more serious problem considering that the disk rotates at a high speed of several thousand revolutions / second. A further serious problem is that it is extremely difficult to place a plurality of longitudinal contact terminals in the clamper recesses with high accuracy in such a narrow space, each having a coil panel, and these contact terminals. It is extremely difficult to accurately align the ring with the ring-shaped terminals arranged at narrow intervals on the disk, and practically impossible to put into practical use.

[0022] Further, 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.

[0023] In addition, since the solid-state memory is embedded in the disk, the manufacturing process becomes complicated, and the lead wire must be embedded in the disk together with the solid-state memory. Further, the ring is connected to the lead wire exposed on the surface. The solid terminals must be formed with high precision in the radial direction. Not only is the cost extremely high, but it is impossible to replace the solid memory once buried.

[0024] Furthermore, since it is efficient in manufacturing to arrange the lead wire taken out from the solid-state memory in the upward direction, it is usual that a ring-shaped terminal is disposed directly above the solid-state memory. In addition, it is difficult to dispose the ring-shaped terminals to be electrically connected apart from each other, which is a major factor in complicating the structure and increasing costs.

[0025] Furthermore, the solid-state memory is embedded in a disk having a thickness of about 1 mm at most, which poses a serious problem for semiconductors that are vulnerable to external shocks. The disk surface on which the solid-state memory is mounted is contacted by the tip of the contact terminal, which is urged by the spring panel in the recess of the clamper, constantly receiving point contact pressure, especially the disk is clamped first. Sometimes the pressure is applied to the embedded solid-state memory under great pressure. 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.

[0026] In particular, in this structure, the electrical connection with the solid-state memory is premised on the presence of a clamper, and cannot be employed in a disk drive device without a clamper. Furthermore, 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-mentioned 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.

[0029] Another object of the present invention is 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 dramatically improving the expandability of the disk utilization field. Is to provide.

[0030] Still another object of the present invention is to provide a disk drive device capable of reliably transmitting and receiving a plurality of signals between the disk side and the disk drive device side with a low cost and simple configuration.

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.

[0032] 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.

[0033] 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. Means for solving the problem

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

(1) In a disk drive device in which a disk on which an electronic circuit is mounted is placed on a turntable, clamped and rotated,

The disk is provided with at least one first conductive part for forming a thin film electrically connected to the electronic circuit,

The disk drive device side is electrically connected to the first conductive portion at the time of clamping. A second conductive portion corresponding to the first conductive portion is provided at a portion in contact with the first conductive portion, and a rotating shaft peripheral portion of a protruding portion protruding after the insertion of the turntable on which the disc is inserted and placing the disc Alternatively, the first photoelectric conversion means electrically connected to the second conductive portion is provided 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, the first conductive portion, A signal is exchanged between the electronic circuit and the disk drive device side via the two conductive parts, the first photoelectric conversion means and the second photoelectric conversion means, and a battery is provided in the rotating part for rotating the disk,

A disk drive device that supplies power from the battery to an electronic circuit on the disk via the second conductive portion and the first conductive portion.

(2) The disk drive device according to (1), wherein the battery is a rechargeable power source.

(3) The disk drive device according to (2), wherein the battery is charged by an output from the second photoelectric conversion means.

(4) 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 electric signal. The disk drive device according to (2), which is charged by output.

(5) The disk drive device according to (2), wherein the battery is charged by an electric signal obtained by receiving an external radio signal.

(6) The disk drive device according to (1), wherein the rotating unit includes an electronic function unit that receives supply of the power.

The invention's effect

According to the present invention, reliable signal transmission / reception between a disk and a disk drive device is enabled, thereby enabling reliable transmission / reception of an electrical signal between the disk and an external device, that is, information recorded on the disk. Read and write to disk, as well as one or more electronic function units mounted on the disk (including configurations necessary for circuit operations such as signal processing circuits and memory, batteries, etc. It is possible to transmit and receive signals between an external device and an electronic function unit with a simple configuration. Also electronic to disk Other modes of functions such as power supply to the function unit and power supply to the battery mounted on the disk can be achieved easily and reliably. Therefore, it becomes possible to specify unique operations based on the functions of one or more electronic function units formed on each disk, and the expandability of the usage field using the disk is remarkably increased. Improved. In addition, by simply forming an electronic function part such as a thin film IC and a conductive part such as a thin film electrically connected to this electronic function part on the normal disk surface, a new configuration is developed that can significantly expand the application range. Can be obtained with minimal cost increase. In addition, a simple disk drive is required to access the power and the disk, and a disk drive device with minimal cost increase can be obtained. Such an effect is particularly noticeable when using an optical disc that is extremely inexpensive and provides 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 speed and data amount.

[0037] In particular, in the present invention, even when the disk is rotating, the conductive part connected to the disk-mounted electronic function part and the holding and gripping part for rotating the disk of the disk drive integrally are formed. The conductive part 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 with a strong pressure contact force (usually surface pressure), so it is stable and reliable. An electrical connection is obtained. There is no problem with radio interference due to the metal film formed on the disk surface or surrounding metal parts, and there is also no problem of external interference due to the possibility of eavesdropping due to radio leakage due to external radio waves. There is no restriction on signal transmission (communication) speed.

[0038] 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. When used in combination, a wide variety of application fields can be obtained.

[0039] In the present invention, any conductive part electrically connected to the electronic function part can be formed by forming a thin film on the disk surface, and the conductive part in direct contact with the conductive part thin film is the disk. Since it is only formed at the central portion of the drive device, it has a very simple configuration. In addition, the conductive portion formed in the central portion is configured to directly receive the clamping, gripping, and holding pressure necessary for rotation and directly contact the conductive film on the disk side. If both sides can be used as surface conductive parts, the same clamping pressure as when there is no electrical part can be obtained, and electrical contact can be ensured, even if the relative positional relationship between the disc and the center part is slightly shifted. There is almost no effect on the electrical contact.

That is, since the electrical connection is performed by electrical contact between the conductive portion formed on the disk and the conductive portion on the disk drive device side, reliable connection is possible. Including the above, this effect is a major difference from the structure of Patent Document 6. In other words, in Cited Document 6, a ring-shaped terminal with a sharp tip that is urged downward by a coil spring is in electrical contact with the electrode on the disk surface, and this ring-shaped terminal is used to rotate the disk. It does not have the function to grip, hold and clamp the disc. It is the direct contact portion of the clamper 615 with the disc that performs the clamping function. Therefore, the electrical connection relationship between the ring-shaped terminal and the electrode on the disk surface in Patent Document 6 includes not only the inferior force compared to the present invention but also the many problems described above.

[0041] Further, in the present invention, the connection with the other part of the conductive part is not required to be accurate, and the arrangement of the electronic function part and the conductive part, as long as they are simply connected, is arbitrary and appropriate according to the application. It can be installed in position S.

[0042] In the present invention, the electronic function unit and the like are disposed at a position where they do not contact the clamper turntable on the disk drive device side, that is, at a position where no clamping pressure is received. For example, a semiconductor circuit or chip that is not susceptible to shock is not subject to the constant point contact pressure or clamping pressure from the tip of the contact terminal that is biased by the spring panel in the clamper recess. It will not be given, and the service life can be extended.

[0043] In addition, it is possible to easily form an electrical path having a plurality of conductive parts on a disk, and it is possible to form a plurality of signal lines to an electronic function part and a signal line to a plurality of electronic function parts. Thus, the mounted circuit can be expanded.

[0044] Furthermore, in the present invention, it is not necessary to provide a power source to be supplied to the electronic function unit mounted on the disk on the disk side, so that a significant 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 into which the disk opening hole of the turntable is inserted), and the power supply can be removed and charged. Because it can be charged while attached, the configuration becomes simple and The strike is also lowered.

[0045] A known non-contact charging means can be used for charging the power source. 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 irradiated with light from the outside, for example, a light source can be provided at the facing position. 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 supplied to the power source from the outside. Furthermore, when the power source is charged with a normal current, the power source can be externally supplied via the slip ring.

[0046] It should be noted that such an effect can be obtained not only in the disk and the disk drive device but also in 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 perspective view schematically showing a configuration of a disc according to the present invention.

FIG. 2 is a simplified cross-sectional view schematically showing the configuration of a turntable according to the present invention.

FIG. 3 is a simplified plan view schematically showing a configuration in a state where a disk according to the present invention is placed on a turntable.

FIG. 4 (A) is a plan view schematically showing a configuration of a disc according to the present invention.

FIG. 4 (B) is a plan view schematically showing the configuration of the disc according to the present invention.

FIG. 4 (C) is a cross-sectional view schematically showing the configuration of the disc according to the present invention.

FIG. 5 (A) is a schematic cross-sectional view of a main part schematically illustrating the configuration of a conventional disk drive device.

FIG. 5 (B) is a schematic cross-sectional view of a main part schematically illustrating the configuration of a conventional disk drive device.

Explanation of symbols

[0048] 1 optical disc

2, 2A ~ 2C Conductive part

3, 3A-3C connection 4, 4A Electronic function part

5 Opening hole

6A to 6C connection line

100 turn tape

101 Protrusion

102 Rotating shaft

110A ~ 110C Clamp member

210, 310 connection interface

Example 1

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

The present invention is directed to a rotating storage medium including a disk and a drive apparatus that performs signal transfer by rotating the medium, and holds and holds and holds the disk by a disk holding and holding means of the disk drive apparatus. As long as the storage medium is clamped and rotationally driven, it can be applied to any disc or card (eg CD, DVD, MO, MD, FD, HD, etc.). explain.

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 disk configuration showing an example thereof is shown in FIG. 3 and 4 show a perspective view and a plan view of a simplified main part of the turntable 100 on the disk and disk drive device side.

[0051] In FIG. 1, a disk 1 has an opening hole 5 that is inserted into the projecting portion of the turntable to position the disk, and has at least one piece (this example) along the circumferential direction of the opening hole 5. In this case, three conductive portions 2A to 2C are provided. This conductive part should be formed in a ring shape.

[0052] At least one electronic function unit 4 such as a CPU is provided on the surface or inside of the disk 1. For example, the conductive units 2A to 2C are connected to the terminals of the electronic function unit 4 via the connection units 3A to 3C, respectively. It is electrically connected. The installation position of the electronic function unit 4 is preferably a non-recording area on the inner periphery of the disk 1. This eliminates the influence of the rotational balance of the disk even when a heavy component such as an electronic function unit is mounted on the disk. [0053] The opening hole 5 of the disk 1 to be applied is inserted into the protrusion 101 of the turntable 100 and positioned.

[0054] When the disc 1 is placed on the turntable 100, the clamp members 110A to 110C (contacts of etc.) provided in the circumferential direction of the projecting portion 101 (contact portion with the disc 1) of the turntable 100 The member is pressed (locked) from above by the inner peripheral portion of the opening hole 5 of the disk to hold, hold, and clamp (hold and hold) necessary for rotation.

[0055] In this embodiment, as shown in FIG. 2 and FIG. 3, a plurality of clamp members 110A to 110C are provided in the outer peripheral direction of the protrusion 101 of the turntable 100 (for example, three at equal intervals). A panel member (not shown) provided in the protruding portion 101 applies a biasing force in the outer diameter direction (downward), and piles the spring force by the panel member to push the disk from above. Fix the contact with.

That is, when the central opening hole 5 of the disc 1 is pushed into the protruding portion 101 from the upper direction against the spring force of the clamp members 110A to 110C and the disc 1 is placed on the turntable 100, the clamp member 110A After 110C is retracted inside (inside the dotted line), it enters the upper surface of the disk 1 to firmly fix the disk 1 between the clamp members 110A to 110C and the turntable 100.

[0057] The disk drive device having such a configuration is simplified in configuration because it does not require a clamper for fixing the disc from above the disc, and is reduced in thickness. It is often applied to small electronic devices such as notebook computers.

[0058] At least a part of the contact portion of the clamp members 110A to 110C with the disk 1 is formed with a conductive part, and electrical connection with the corresponding conductive parts 2A to 2C on the disk 1 side is established when the disk is mounted. . Thus, an electrical connection is established between the electronic function unit 4 of the disk 1 and the turntable 100 side of the disk drive device.

[0059] Here, the electrical connection between the conductive parts 2A to 2C of the disk 1 does not need to be the clamp member 110A to 110C. The means to be electrically connected to the conductive parts 2A to 2C of the disk 1 when the disk is driven. Anything is fine. For example, a member having a conductive portion formed on one side is normally stored in the protruding portion, and after placing the disk, the member is taken out of the protruding portion, A configuration in which the conductive portion is pressed from above so that the conductive portion is securely connected to the conductive portion of the disk 1 can be employed. The configuration of these clamp members can be optionally retracted in response to the operation of the user's button or the like. Therefore, in the following description, it can also be called a “clamping connection member”. Of course, the clamping connection member can be provided separately from the clamping member.

In the present embodiment, at least one conductive portion 2 is formed in the circumferential region of the inner peripheral end portion of the opening hole 5 of the disk 1, and this conductive portion 2 and the clamp member of the protruding portion 101 of the turntable 100 It is electrically connected to any one of 110A to 110C.

In this embodiment, the electronic function unit 4 electrically connected via the connection unit 3 is mounted on the upper surface of the disk 1. An information recording surface is formed on the turntable 100 side of the disk 1 (the lower surface of the disk), and information is written and read by the optical pickup. On the other hand, the electronic function unit 4 is mounted on the upper surface of the disk. There are no restrictions on the mounting location where there is no physical restriction such as the optical pickup drive mechanism, etc.For example, there is no part to which the clamping pressure is applied on this upper surface. The degree is expanded. If the conductive portion 2 is formed on the inner peripheral wall of the opening hole 5 in addition to the circumferential region at the inner peripheral end of the disk opening hole 5, more reliable electrical contact can be obtained. These conductive parts 2 come into strong contact with the clamp members 110A to 110C, and reliable electrical contact is obtained.

In this embodiment, as shown in FIG. 2 and FIG. 3, the photoelectric conversion element as the connection interface, in this example, the light emitting element 210 is on or near the rotation center axis of the protrusion 101. A battery 220 is provided on the projecting portion 101 (inside or on the top). Of course, other electronic function units and the like can be provided. The battery 220 can be used as a driving power source for the light emitting diode 210, and the battery 220 can be connected to the connecting members 6A to 6C via the connection lines 6A to 6C, and at least the conductive members 2A to 2C of the disk 1 and the connecting members 110A to 110C at the time of clamping It can also be supplied as power to the electronic function unit 4 on the disk 1 via either of them. 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 protrusion 101 is normally hollow, there is no problem in mounting these components in the hollow.

[0063] The battery may be removable so that it can be recharged when needed, or disposable But you can. Of course, as described later, it is possible to charge it electrically / optically / electromagnetically while mounted.

As described above, it is also possible to supply power directly to the electronic function unit without providing a battery on the disk side. If the battery is provided on the side of the rotating body such as a turntable, the connection is performed in a relatively stationary state via the conductive portions 110A to 110C and the conductive portions 2A to 2C. Done.

[0065] The battery (power source) can be charged using a known non-contact charging means. When the battery provided in the rotating part on the disk drive side is a solar cell and is charged with light, for example, a light source (charging) is provided at a facing position along the rotation axis so that the power source is irradiated with light from the outside. Means). Of course, the solar cell, which should be provided not only at the facing position but also at a position where it can be irradiated with charging light, is formed in a ring shape around the rotating shaft of the protruding portion of the turntable. The solar battery can be charged by installing it in a ring-shaped position. Even if it is not formed in a ring shape, charging is possible because the solar cell is irradiated with light once per rotation as the rotating body rotates. If the battery is a power supply that can be charged with a high-frequency signal such as a radio wave, an electromagnetic signal such as a radio wave signal is supplied to the power supply from the outside (charging means). Can be configured. In the case of radio waves, the propagation range is wide, so that the installation allowable position of the signal source can be set at a position shifted from the wide rotation center axis, and radio waves can be emitted from the outside of the disk drive device. Furthermore, when the power source is charged with a normal current, the power source (charging means) can be supplied to the power source from the outside via a slip ring.

[0066] Photoelectric conversion means 210 and an antenna for radio wave transmission / reception are provided on the upper surface of the protruding portion 101, and the converted electrical signal (a signal for communication with the electronic circuit 4 or a signal for charging the battery) is connected to the battery. If it is made to supply to, signal transmission and battery charge can be performed simultaneously. As described above, the battery can be charged at the same time during communication, or can be arbitrarily performed when necessary, for example, when communication is stopped. Similarly, a means for receiving a charging signal (a photoelectric conversion means, an antenna, a conductive part for slip ring, etc.) is provided on the rotating shaft part on the opposite side of the protruding part 101, and the charging signal is supplied to the protruding part 101, etc. Provided in the rotating part The battery can be configured to be supplied and charged.

[0067] 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.

[0068] As in this embodiment, by providing the battery on the rotating side, it is necessary to provide the disk with a power source for supplying power to the electronic circuit mounted on the disk (electronic function unit such as CPU and memory). Disappear. Therefore, a significant cost reduction effect of the disk can be obtained, and replacement when the battery is exhausted becomes unnecessary.

[0069] The electronic circuit as the electronic function unit 4 includes various configurations as will be described later, and may include arbitrary components such as a CPU and memory, and arbitrary components such as a battery. Of course, some of the components can also be included, and a thin film configuration is desirable. An electronic circuit or the like means an arbitrary functional unit such as an optical functional unit that is not limited to an electronic functional unit, and may be anything as long as input / output is electrical.

A disk to which the disk drive device according to the present invention is applied is a disk on which an electronic circuit or the like is mounted, and a disk configuration showing an example thereof is shown in FIGS. 4A and 4B.

[0071] In FIG. 4A, on one side of the disc 1 (in this example, the side facing the turntable on which the disc is placed), a recording area (for example, data such as images, music, images, etc.) is recorded. For example, a RAM area and a ROM area as a program recording unit in which a predetermined program is stored are formed. Inside the recording area in the radial direction, there is a non-recording area where no information is recorded. In addition, an electronic function unit 4 such as an electronic function unit 4 that executes signal processing designed based on a program stored in a ROM area or other memory or designed uniquely is provided on the other side of the disk 1. It is formed at an arbitrary site. The electronic function unit 4 includes various configurations as will be described later, and may include arbitrary components necessary for electronic processing such as a CPU and a memory, and arbitrary components such as a battery. Of course, some of the components can be included, and a thin film configuration is desirable. An electronic circuit or the like means an arbitrary functional unit such as an optical functional unit that is not limited to an electronic functional unit.

[0072] In this example, the disk drive device is clamped (wide, including chucking, holding, and gripping). (Note) The part of the inner periphery of the disk that is the position corresponding to the part that is contacted and held by the mechanism (usually a transparent part but sometimes an opaque part) where the disk is gripped, held, and clamped ( In this example, for example, a thin-film conductive portion 2 is formed in at least a part of a clamp region on the one surface side of the disk 1, which is a contact region with the turntable. The conductive portion 2 can be formed in a ring shape as shown in the drawing, or can be formed in only a part. Conductive part 2 is formed at the inner periphery of opening hole 5 so that power can be supplied via the conductive part formed on the electronic circuit that requires power supply among the mounted electronic circuits, Can be exchanged.

[0073] On the other hand, as shown in FIG. 4B, the other surface side of the disk 1 (with the opposite surface of the turntable) is provided with a connecting portion 3 made of a conductive material, and the connecting portion 3 A connected electronic function unit 4 is provided. As shown in Fig. 4C, the conductive part 2 on one side of the disk 1 and the connection part 3 on the other side are electrically connected by a vertical connection part 7 that penetrates in the thickness (vertical) direction of the disk at the corresponding part. As a result, the conductive part 2 and the electronic function part 4 are electrically connected via the vertical connection part 7 and the connection part 3. The vertical connection portion 7 can be provided along the inner peripheral wall portion of the opening hole 5 of the disk, or a concave portion can be provided on the inner peripheral wall surface of the opening hole 5 and provided along the concave portion.

In addition, the electronic function unit 4 can be provided at an outer position (preferably a non-recording area) or an inner position than the clamp part. However, in the case where there is no problem of the clamping pressure, the electronic function unit may be formed in the clamping region. Of course, the conductive part 2 itself may be set in the same part as the electronic function part 4, for example, so that the electronic function part 4 includes the conductive part 2. In short, it is possible to prevent the connection part 3 from requiring a physical existence that should be functionally present.

Returning to FIG. 4A, a conductive portion 2 of, for example, a thin ring shape (other arbitrary shapes are possible) is formed on the inner peripheral portion of one surface of the disk 1. The conductive part 2 is electrically connected to the electronic function part 4 on the other side of the disk via the connection part 3 and the vertical connection part 6. The same applies to the above-described embodiments, but the conductive part 2 can be a part having information independently. For example, if this conductive part 2 has some information on the disk (disc specific information, etc.), the information can be obtained directly from the disk drive device. Electronic machine The electronic circuit 4 as a functional unit can be a functional unit having signal processing, generation of some electronic information, writing or storing function, or a functional unit or electronic function in which the conductive unit itself generates some information. It is good, including the part.

[0076] The disc 1 is placed on the turntable of the disc drive device, and is gripped, held and clamped by the clamp mechanism, and is rotationally driven by the rotational drive means. Normally, the recording area in which information on the disc is recorded is formed in areas other than the non-recording area on the inner circumference of the disc 1, and the inner circumference is a transparent, semi-transparent, or opaque area and is basically clamped. It is used only as a part for. In the present embodiment, the conductive portion 2 is formed at least partially in the clamp region of the predetermined portion of the inner peripheral portion.

In the above description, it is assumed that the electronic circuit 4 as the electronic function unit is fixedly mounted on the disk surface. However, the electronic function unit 4 may be mounted inside the disk. A configuration in which the electronic function unit 4 and the like are mounted on the disk so that they can be replaced as appropriate is also useful. In this case, a locking part for mounting and locking the electronic function part (chip) is provided at the mounting position of the electronic function part of the disc, and the electronic function part (chip) is attached and locked to this locking part. I hope it's good. The connecting portion 3 can be fixedly disposed and connected to the locking portion. 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 to be used among a large number of disks, it becomes possible to use a large number of disks as disks specific to the specific individual.

[0078] 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. Further, an electronic circuit and an electronic function unit specific to the user and the disc can be easily mounted. For example, information such as disc information, ro information, and the like that differ for each user can be provided. Therefore, if the electronic function unit is installed only at the time of use and the electronic function unit is removed at the end of use, access by a third party becomes impossible and security is greatly improved. Also, if digital data such as CDs and DVDs needs to be played back with the presence of key data stored in the chip, unauthorized copying can be completely eliminated by removing the chip.

[0079] The electronic function unit 4 is based on, for example, a program recorded in the ROM area on the disk surface. The processing result is transmitted to the disk drive device side in the form described below. Conversely, it receives a signal from the disk drive device side. The electronic function unit 4 may be configured to perform an operation based on a program recorded on another recording medium as described above, and the operation may be performed in a predetermined manner. Of course, it is assumed that it also includes a good memory. In short, its configuration is arbitrary, it includes a memory function, etc., and the electronic function unit is good if its input and output are electrical signals. The processing is optional such as optical processing.

[0080] As the predetermined processing of the electronic function unit 4, for example, when the information recorded in the recording unit is encrypted, the encrypted information is read and a predetermined program is read out There is a process to decipher based on. Similarly, when writing in encrypted form, it is also possible to enter a sign based on a predetermined encryption program.

[0081] For example, a housing of a disk drive device is disposed on the side of the protruding portion 101 facing the light emitting element 210, and a light receiving element 310 is disposed on the facing portion to transmit and receive an optical signal. . Here, the light emitting element 210 and the light receiving element 310 are one means as a connection interface means, and if a light receiving / emitting element is used, bidirectional signal transmission / reception is possible. The connection interface means is not optically limited, and it is needless to say that electromagnetic or slip ring structure means (rotating shaft slip ring) can be used.

[0082] Here, if a 喑号匕 program and a decryption program are defined for each disk, closed signal processing that does not require any external information is possible for each disk, which is closed. Unless the process is based on a specific process, it is difficult to access the disk, and high security can be ensured. In addition, higher security can be ensured by individually setting keys for decryption from the outside. Furthermore, the processing result processed by the external processing circuit can be recorded in the recording unit. In this way, the processing result is stored and recorded only in the RAM area as the recording unit of the disk without remaining in the external processing device, and the data to be stored and recorded is subjected to processing such as encryption by the electronic function unit. If this is the case, a third party cannot obtain decryption data unless there is a decryption program that includes key information for decrypting the data. High system can be realized. In addition, signal transmission / reception between the electronic function unit, etc., formed on the disc and external circuits will significantly expand the fields of use that were not envisaged. In other words, the electronic function section has a unique processor function as a CPU, a function as a memory, an execution function of a unique processing mode, etc. Can be extended.

[0083] In addition, a configuration in which the electronic function unit 4 and the like are mounted so as to be appropriately replaceable is also useful. In this case, a locking portion for mounting and locking the electronic function section (chip) is provided at the mounting position of the electronic function section of the disc, and the electronic function section (chip) can be attached and locked to the locking section. Good. A connecting portion with the outside can be fixedly disposed and connected to the locking portion. Needless to say, this embodiment can be applied to all disks on which an electronic function unit or the like is mounted.

According to the configuration described above, when a mounted electronic function unit fails, it is 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. For example, it is possible to provide information such as discs, encryption information that differs for each user, and I information. Therefore, if the electronic function unit is installed only at the time of use and the electronic function unit is removed at the end of use, access by a third party becomes impossible and the security is greatly improved.

[0085] As described above, the connection interface sections 210 and 310 mean that they have an interface function, and these sections do not need to include components such as a photoelectric conversion means and a drive circuit. , You can leave it in any position. For example, an optical fiber can be provided as the connection interface 210 or 310 on the rotating shaft end or the 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 units 210 and 310 may be provided in other locations.

Now, the optical signal received by the phototransistor of the connection interface unit 310 is converted into an electrical signal, and the converted electrical signal is sent to the circuit unit (rotating unit) of the printed circuit board. Conversely, the electrical signal from the printed circuit board is applied to the conductive part of the turntable 100 and the conductive part of the disk 1. In the case of sending to the electronic function part 4 of the disk 1 via the part 2 (connection part 3), the signal is sent out by the same route.

[0087] As described above, since 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 102 is close to each other, Connection (communication) is possible even if the strength is weak, and it is also effective in terms of security because the effects of external interference and noise that hardly leak to the outside can be minimized. In other words, the installation of the optical means and the wireless means along the axis of the rotating shaft portion 102 requires less blurring of signal light 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 include all the embodiments described below, and are used for exchanging signals between the rotating member and the stationary member of the disk drive device, and the same effects can be obtained.

[0088] 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 in a specific manner for the disk, and on the disk drive device side, signals should be exchanged only with the conductive part formed on the disk side. I can do it. Therefore, even if the disk is a normal disk that does not have a conductive portion or the like, the disk drive device can operate normally and maintain compatibility.

[0089] 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.

[0090] 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 a signal processed by the processing device or a signal processed by the electronic function unit is It is also possible to write data in the RAM area, the electronic function section, or in a separate memory, and the processing is optional.

As is apparent from the above description, the present invention can be used even with a normal disk not equipped with an electronic function unit. In other words, a disk without an electronic function When used in the disk drive apparatus according to the present invention, since no conductive part is in contact with the conductive part on the disk drive apparatus side, the disk drive apparatus operates as a normal disk drive apparatus.

Claims

The scope of the claims

[1] In a disk drive device in which a disk on which an electronic circuit is mounted is placed on a turntable and is clamped and rotated.

A second conductive portion corresponding to the first conductive portion is provided on the disk drive device side at a portion that is in electrical contact with the first conductive portion at the time of clamping, and a disk is inserted. A first photoelectric conversion means electrically connected to the second conductive portion is provided on the periphery of the rotating shaft of the protruding portion or the other end of the rotating shaft that protrudes after the insertion of the turntable on which the disk is placed. ,

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,

Signal exchange between the electronic circuit and the disk drive device side is performed via the first conductive unit, the second conductive unit, the first photoelectric conversion unit, and the second photoelectric conversion unit,

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

A disk drive device, wherein power is supplied from the battery to an electronic circuit on the disk via the second conductive portion and the first conductive portion.

2. The disk drive device according to claim 1, wherein the battery is a rechargeable power source.

3. The disk drive device according to claim 2, wherein the battery is charged by an output from the second photoelectric conversion means.

[4] The battery receives light from a charging light generation unit provided with an axial position shifted from that of the first photoelectric conversion unit, and converts it into an electric signal from the charging photoelectric conversion unit. 3. The disk drive device according to claim 2, wherein the disk drive device is charged by output.

5. The disk drive device according to claim 2, wherein the battery is charged by an electric signal obtained by receiving a radio signal from the outside.

6. The disk drive device according to claim 1, wherein the rotating unit includes an electronic function unit that receives supply of the power.