JP2007157292A - Information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply configure a power supply system and a control system in an information processor equipped with a constant power supply device for loading/eject even when a main power supply device is turned OFF. <P>SOLUTION: This processor includes an information recording/reproducing device 11 having a medium detector 13 capable of detecting the insertion of a removable medium 10 into a slot loading mechanism 12, a power supply device 18 capable of supplying power to the information recording/reproducing device 11, a power controller 19 for controlling the power supply device 18, and a signal transmitter 20 to which power is always supplied from a constant power supply device 22, and which receives a signal detecting the insertion of the removable medium 10 into the slot loading mechanism 12 from the media detector 13 to supply power from the power supply device 18 to the information recording/reproducing device 11 via the power controller 19. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, and in particular, can control a load / eject operation capable of loading / ejecting a removable medium that can be mounted on an information recording / reproducing apparatus, and a power supply to the information recording / reproducing apparatus. The present invention relates to an information processing apparatus.

  2. Description of the Related Art An information recording / reproducing apparatus such as a CD-ROM drive capable of exchanging a disk-type information storage medium (hereinafter abbreviated as “disk” as appropriate) as a removable medium has been widely used in an information processing apparatus such as a personal computer. Is commonly used from.

  There are roughly two types of conventional disc replacement methods in the information recording / reproducing apparatus. The first is a mechanical method, in which a user mechanically operates a lid or a drawer-type tray to pull out / store, or sweeps / takes in the disk itself or a protective case storing the disk. In this method, the disk is exchanged by ejecting or loading. Secondly, by operating a switch or the like to electronically perform a drawer / storage operation by a lid or a drawer-type tray, or by sweeping out / taking in the protective case containing the disk itself or the disk, In this method, the disk is replaced by ejecting or loading.

  At present, an accident due to ejection while the disk is rotating is assumed as the rotational speed of the disk increases, so at least a high-speed CD-ROM drive or the like has an electronic eject that ejects after the disk stops rotating. Is almost. However, the electronic method can be ejected or loaded while power is being supplied to the information storage device, but has the disadvantage that ejection and loading cannot be performed while the power is off.

  An information processing apparatus proposed in Patent Document 1 includes a press detection device that detects pressing of an eject button or a loading button while the storage device is turned off, and a power supply circuit based on a button press detection signal from the press detection device. A device that activates the loading mechanism by supplying power to the storage device when it is turned on, and a sweep / capture completion that outputs a disk position detection signal by detecting the completion of the disk sweep or capture in the storage device in the power-off state Since the power supply circuit is turned off after detecting the disk position detection signal, it is possible to reliably replace the disk while the power of the storage device is turned off. Can be turned off completely.

  However, although the one described in Patent Document 1 has low power consumption, it only detects that one eject switch has been pressed and loads / ejects the information storage device. In an actual drive, not only a load / eject operation by an eject switch, but also, for example, in a slot loading type information storage device, an eject operation is performed by an eject switch to detect that a medium has been inserted into the information storage device or The load operation starts when the state of the sensor changes. In addition, in a general tray system as a loading system of an optical disk recording / reproducing apparatus, in addition to performing a load / eject operation by an eject switch, the ejected tray is pushed into the apparatus so that the switch apparatus installed inside the apparatus It is necessary to detect a change in logic of a plurality of switch devices and perform an operation corresponding to the change, for example, a load operation is performed according to the change of the state. For this reason, in the thing of patent document 1, it cannot respond to the different logic of a some switch.

  Further, in Patent Document 1, there is provided a detection device for detecting completion of loading / ejection of a disk while the power of the device is shut down and turning off the power supply circuit again. Since it is common to the power supply circuit for the entire processing device, if the time from when the switch is pressed to when it is released is short, the pressed state of the switch can be released before the detection device is turned on. For this reason, there is also a problem that it is impossible to determine whether the power switch of the information processing apparatus main body has been pressed or the load / eject switch of the information storage device has been pressed.

In order to solve such a problem, in Patent Document 2, the main power supply device and its load / eject operation so that the load / eject can be performed even when the main power supply device is off. There has been proposed an information processing apparatus including an apparatus that constantly supplies power to the minimum necessary part.
Japanese Patent Application Laid-Open No. 11-149689 JP 2005-222679 A

  However, since the device described in Patent Document 2 is provided with a constant power supply device in addition to the main power supply device, the power supply system and the control system for controlling the power supply device are complicated. Become.

  In view of the above, the present invention solves such a problem, and in addition to the main power supply device, a constant power supply device is provided so that loading / ejecting is possible even when the main power supply device is off. It is an object of the present invention to easily configure a power supply system and a control system for controlling the power supply apparatus.

In order to achieve this object, the present invention
An information recording / reproducing apparatus having a slot loading mechanism for inserting and ejecting a removable medium, and a medium detecting device capable of detecting that the removable medium has been inserted into the slot loading mechanism;
An information device control apparatus for controlling the information recording / reproducing apparatus to read data from a removable medium or write data to a removable medium;
A power supply device capable of supplying power to the information recording / reproducing device and the information equipment control device;
A power control device for controlling the power supply device;
A constant power supply device for constantly supplying power to the power control device;
A constant power supply is supplied from the constant power supply device, and a signal indicating that a removable medium has been inserted into the slot loading mechanism is received from the media detection device. A signal transmission device for supplying power to the information recording / reproducing device and the information device control device;
Is provided.

  Therefore, according to the present invention, the information recording / reproducing apparatus includes only the power supply line from the power supply apparatus, the control line from the information apparatus control apparatus, and the signal line between the media detection apparatus and the signal transmission apparatus. For this reason, the wiring between the power supply system when the information recording / reproducing apparatus is centered and the control system for controlling the power supply system can be simplified.

  According to the present invention, an information recording / reproducing apparatus receives a signal from a media detection device that detects that a removable medium has been inserted into the slot loading mechanism and a drive circuit for the slot loading mechanism. And a power supply control circuit that supplies power supplied to the information recording / reproducing apparatus to the drive circuit.

  With such a configuration, the information recording / reproducing apparatus can supply power to the drive circuit for the slot loading mechanism only when the removable medium is inserted into the slot loading mechanism.

  According to the present invention, the media detection device is configured by a switch that is opened and closed according to the insertion / ejection operation of the removable media with respect to the slot loading mechanism, and the signal transmission device constantly supplies power from the power supply device to the switch. In addition, it is preferable that the input level to the power supply control device is changed as the switch is opened and closed in accordance with the insertion / ejection operation of the removable medium with respect to the slot loading mechanism.

With such a configuration, it is possible to expect a reliable operation with a simple configuration of the media detection device.
According to the present invention, in the above, the power supply control circuit of the information recording / reproducing apparatus is electrically connected to the switch, and the current from the power supply constantly supplied to the switch from the constant power supply apparatus is the information recording / reproducing apparatus. It is preferred to have a current flow blocking device for blocking the flow into the device.

  In such a configuration, the switch always operates with power supplied from the power supply device, whereas the information recording / reproducing device confirms that the removable medium has been inserted into the slot loading mechanism. When the medium detection device detects the power supply from the power supply device for the first time, when the information recording / reproduction device is not supplied with power, the information recording / reproduction device is always supplied with power. It is possible to reliably prevent the current from flowing in.

According to the present invention, in the above, it is preferable to include a low-pass filter for removing noise based on chattering generated in the switch.
With such a configuration, it is possible to prevent adverse effects due to chattering generated in the switch and malfunctions based on the adverse effects.

  According to the present invention, the power supply control device is supplied from the power supply device to the information recording / reproducing device and the information equipment control device based on the detection signal from the media detection device that the removable medium has been inserted into the slot loading mechanism. It is preferable to provide an operation state holding device that holds the operation state after the removable medium is discharged from the slot loading mechanism.

  With such a configuration, switching to another disk can be performed without turning the power on and off.

  According to the present invention, only the power supply line from the power supply device, the control line from the information equipment control device, and the signal line between the media detection device and the signal transmission device are connected to the information recording / reproducing device. For this reason, it is possible to simplify the wiring between the power supply system centering on the information recording / reproducing apparatus and the control system for controlling the power supply system.

  FIG. 1 shows a schematic configuration of an information processing apparatus according to an embodiment of the present invention. Reference numeral 11 denotes an information recording / reproducing apparatus, which is a slot loading mechanism 12 capable of inserting and ejecting a disk-shaped removable medium 10 and a medium detecting apparatus 13 capable of detecting that the removable medium 10 has been inserted into the slot loading mechanism 12. And a drive circuit 14 for driving the slot loading mechanism 12, a CPU 15 for controlling the drive circuit 14, and a power supply control circuit 16 for controlling the supply of power to the CPU 15.

  Reference numeral 17 denotes an information device control apparatus for controlling the information recording / reproducing apparatus 11 so that the information recording / reproducing apparatus 11 reads data from the removable medium 10 or writes data to the removable medium 10. Reference numeral 18 denotes a power supply device for supplying power to the information recording / reproducing apparatus 11 and the information equipment control device 17, and 19 denotes a power supply control device for controlling the power supply device 18.

  A signal transmission device 20 provided outside the information recording / reproduction device 11 is connected to the output side of the media detection device 13 of the information recording / reproduction device 11, and an operation state holding device 21 is provided on the output side of the signal transmission device 20. The power supply control device 19 is connected to the output side of the operation state holding device 21.

  22 is a constant power supply device, regardless of whether the power supply device 18 is turned on or off, that is, regardless of whether the entire information processing device shown in the figure is turned on or off, the power control device 19, the operation state holding device 21, and the signal transmission device 20 It always supplies power.

  A switch 23 and a resistor 24 are used by the user to turn on and off the power supply of the entire information processing apparatus shown in the figure. Is.

  FIG. 2 shows detailed structures of the signal transmission device 20, the media detection device 13, and the power supply control circuit 16. The signal transmission device 20 is configured by a resistor 26, and one end of the resistor 26 is always connected to the output side of the power supply device 22, and the other end is connected to the input side of the operation state holding device 21. Yes. The media detection device 13 is constituted by a normally closed switch, one end of which is connected to the input side of the operation state holding device 21 and the power supply control device 16, and the other end is grounded.

  The power supply control device 16 includes a power supply unit 27 connected to the power supply device 18, an output unit 28 connected to the CPU 15, and a signal input unit 29 connected to a switch as the media detection device 13. Yes. A resistor 31 and a diode 32 are connected in series between the power supply unit 27 and the signal input unit 29, and the diode 32 does not flow current from the media detection device 13 toward the power supply control device 16. It is connected to the. A resistor 33 and a grounded emitter transistor 34 are connected in series to the power supply unit 27, and an output unit 28 is connected to the collector of the transistor 34. The base of the transistor 34 is connected to the anode of the diode 32 via a resistor 35 and a diode 36 arranged in a direction in which current flows into the base. The diode 36 is provided to compensate for a voltage drop due to the diode 32.

  In such a configuration, when the illustrated information processing apparatus is not operating, the power supply apparatus 18 is off, and the information device control apparatus 17 and the information recording / reproducing apparatus 11 are similarly off. However, even at this time, the power supply device 22 is always on, and power is supplied to the power supply control device 19, the action state body holding device 21, and the signal transmission device 20. In FIG. 2, since the switch constituting the media detection device 13 is normally closed and grounded, even if power is supplied from the constant power supply device 22 to the resistor 26 of the signal transmission device 20, the operation state holding device 21. Therefore, the input of the power supply control device 19 is also at the L level, the power supply control device 19 does not operate the power supply device, and the power supply device 18 remains off.

  When the medium 10 is inserted into the slot loading mechanism 12, for example, the insertion is detected by opening a switch of the media detection device 13 in accordance with the movement. Then, when the switch of the media detection device 13 is opened, the input of the operation state holding device 21 becomes H level via the resistor 26 of the signal transmission device 20, thereby the input of the power supply control device 19 also becomes H, The power supply device 18 is turned on, the power is supplied to the information recording / reproducing device 11 and the information device control device 17, and the information recording / reproducing device 11 is operated.

  Next, the operation of the power supply control circuit 16 will be described. When the power supply device 18 is off, no power is supplied to the power supply unit 27, and therefore no input signal of the CPU 15 is supplied. At this time, the diode 32 is grounded via the normally closed switch of the media detection device 13, and the potential of the base of the transistor 34 through the diode 36 that compensates for the voltage drop due to the diode 32 is also zero. Is off.

  When the medium 10 is inserted into the slot loading mechanism 12 and the switch of the medium detection device 13 is opened, the signal input unit 29 is constantly supplied with power from the power supply device 22 and becomes H level, but a diode 32 is provided. Therefore, the current from the constant power supply device 22 is prevented from flowing into the power supply control circuit 16 and malfunctioning.

  In this state, when the power supply device 18 is turned on as described above, power is supplied to the power supply unit 27 of the power supply control circuit 16, and current is supplied to the base of the transistor 34 via the diode 36. The slot loading mechanism 12 can be operated via the CPU 15 and the drive circuit 14 in conjunction with this.

  Now, when the medium 10 is ejected from the slot loading mechanism 12 by the operation of the drive circuit 14, the media detection device 13 does not detect the media, specifically, the switch is closed again, and the operation state holding device The input of 21 returns to the L level. However, since the operation state holding device 21 is configured by a holding circuit such as a flip-flop, the operation state does not change even if the detection state of the media detection device 13 changes. The power supply device 18 continues to be kept on. Therefore, the medium 10 can be taken in and out without turning the information recording / reproducing apparatus 11 on and off. Note that when the medium 10 is ejected from the slot loading mechanism 12, the transistor 34 is turned off, so that the drive circuit 14 controlled by the CPU 15 is turned off.

Thereafter, by operating the power switch 23, the power supply device 18 can be changed to the off state via the power control device 19 for the first time.
By operating the switch 23, the power supply device 18 can be turned on and the information recording / reproducing device 11 can be similarly turned on without inserting the medium 10 into the slot loading mechanism 12. This is the original starting operation of the apparatus.

  As described above, the information recording / reproducing apparatus 11 including the slot loading mechanism 12, the media detection device 13, the power supply control circuit 16, the CPU 15, and the drive circuit 14 is supplied with power from the power supply device 18. It is sufficient to connect only the line, the control line from the information device control device 17, and the signal line between the media detection device 13 and the signal transmission device 20. For this reason, the wiring between the power supply system when the information recording / reproducing apparatus 11 is centered and the control system for controlling the power supply system can be simplified.

  As described above, the media detection device 13 is configured by a switch. For this reason, chattering may occur. In order to remove noise based on the occurrence of such chattering and prevent the occurrence of malfunction, in the circuits of FIGS. 3 and 4, a capacitor 38 and a resistor 39 are interposed between the media detection device 13 and the signal transmission device 20. The low-pass filter 40 comprised by these is provided.

  5 and 6 show an information processing apparatus according to another embodiment of the present invention. Here, the configurations of the signal transmission device 20 and the power supply control circuit 16 are different from those shown in FIG. 1 and FIG. In addition to the differences, the signal transmission device 20, the power supply control circuit 16 and the media detection device 13 have different wiring states. Hereinafter, these points will be described.

  The power supply control circuit 16 does not include the resistor 31, the diode 32, and the diode 36 as compared with that shown in FIG. 2, and the resistor 35 is directly connected to the signal input unit 29, and the power output unit 42 is connected. In addition, a diode 43 having a forward direction in which a current flows from the power input unit 27 to the power output unit 42 is connected between the power input unit 27 and the power output unit 42.

  In the signal transmission device 20, an anode of a diode 44 is connected to one end of the resistor 26, that is, a connection side to the constant power supply device 22, and an emitter is connected to the other end of the resistor 26, that is, a connection side to the operation state holding device 21. The collector of the grounded transistor 45 is connected. Reference numeral 46 denotes a base resistance of the transistor 45. The cathode of the diode 43 and the cathode of the diode 44 are both connected to one end of the resistor 47, and the other end of the resistor 47 is connected to the base resistors 35 and 46 of the transistors 34 and 45, respectively.

One end of the media detection device 13 configured by a switch is connected to a connection portion between the resistor 47 and the resistors 35 and 46, and the other end is grounded.
In such a configuration, when the illustrated information processing apparatus is not operating, the power supply apparatus 18 is off, and the information device control apparatus 17 and the information recording / reproducing apparatus 11 are similarly off. However, even at this time, the power supply device 22 is always on, and power is supplied to the power supply control device 19, the action state body holding device 21, and the signal transmission device 20. In FIG. 6, since the switch constituting the media detection device 13 is normally closed and grounded, even if power is supplied from the constant power supply device 22 to the resistor 26 and the resistor 47 of the signal transmission device 20, the transistor 45. Is off. For this reason, the input of the operation state holding device 21 is at the H level, so that the power supply control device 19 does not operate the power supply device 18 and the power supply device 18 remains off. For this reason, the power supply control circuit 16 is also off. At this time, since the power supply control circuit 16 is provided with the diode 43, it is prevented that the current from the power supply device 22 always flows into the power supply control circuit 16 and causes malfunction.

  When the medium 10 is inserted into the slot loading mechanism 12, the switch of the media detection device 13 is opened along with the movement. Then, the transistor 45 is turned on and the input level of the operation state holding device 21 is changed, whereby the power supply device 18 is turned on via the power control device 19, and the information recording / reproducing device 11, the information equipment control device 17, Thus, the information recording / reproducing apparatus 11 is operated.

  Next, the operation of the power supply control circuit 16 will be described. When the power supply device 18 is off, no power is supplied to the power supply unit 27, and therefore no input signal of the CPU 15 is supplied. At this time, since the switch of the media detection device 13 is closed as described above, the base potential of the transistor 34 is also zero, and the transistor 34 is also off.

  When the medium 10 is inserted into the slot loading mechanism 12 and the switch of the media detection device 13 is opened, the power supply device 18 is turned on as described above, and power is supplied to the power supply control circuit 16. At the same time, the transistor 34 is turned on, and the slot loading mechanism 12 can be operated via the CPU 15 and the drive circuit 14. At this time, since the diode 44 is provided in the signal transmission device 20, it is possible to prevent a current from the power supply device 18 from flowing into the signal transmission device 20 and causing a malfunction.

  Thus, in the apparatus shown in FIGS. 5 and 6, it is only necessary to install two lines between the information recording / reproducing apparatus 11 provided with the media detecting apparatus 13 and the signal transmitting apparatus 20, and in the previous case, Similarly to the above, the apparatus can be configured with a simple wiring structure.

  FIG. 7 shows the configuration of an information processing apparatus according to the present invention that does not include the operating state holding device 21. In the case of this device, the on / off state of the power supply device 18 also changes in accordance with the on / off state of the media detection device 13.

  The information processing apparatus according to the present invention includes only the power supply line from the power supply apparatus, the control line from the information apparatus control apparatus, and the signal line between the media detection apparatus and the signal transmission apparatus. It suffices to connect, so that the wiring between the power supply system when the information recording / reproducing apparatus is centered and the control system for controlling this power supply system can be simplified. Therefore, as an information processing apparatus capable of controlling a load / eject operation capable of loading / ejecting a removable medium that can be mounted on the information recording / reproducing apparatus, and a power supply to the information recording / reproducing apparatus. Useful.

The figure which shows the structure of the information processing apparatus of embodiment of this invention The figure which shows the detailed structure of the principal part in FIG. The figure which shows the modification of the part shown in FIG. The figure which shows the other modification of the part shown in FIG. The figure which shows the structure of the information processing apparatus of other embodiment of this invention. The figure which shows the detailed structure of the principal part in FIG. The figure which shows the structure of the information processing apparatus of further another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Removable medium 11 Information recording / reproducing apparatus 12 Slot loading mechanism 13 Media detection apparatus 17 Information equipment control apparatus 18 Power supply apparatus 20 Signal transmission apparatus 22 Constant power supply apparatus

Claims (6)

An information recording / reproducing apparatus having a slot loading mechanism for inserting and ejecting a removable medium, and a medium detecting device capable of detecting that the removable medium has been inserted into the slot loading mechanism;
An information device control device for controlling the information recording / reproducing device to read data from a removable medium or write data to a removable medium;
A power supply device capable of supplying power to the information recording / reproducing device and the information equipment control device;
A power control device for controlling the power supply device;
A constant power supply device for constantly supplying power to the power control device;
The constant power supply device supplies a constant power supply, and receives a signal from the media detection device that detects that a removable medium has been inserted into the slot loading mechanism. A signal transmission device for supplying power to the information recording / reproducing device and the information device control device;
An information processing apparatus comprising: Information recording and playback device
A drive circuit for the slot loading mechanism;
A power supply control circuit for supplying the drive circuit with the power supplied from the power supply device to the information recording / reproducing device by receiving a signal from the media detection device that detects the insertion of the removable medium into the slot loading mechanism; ,
The information processing apparatus according to claim 1, further comprising: The media detection device is composed of a switch that opens and closes according to the insertion / ejection operation of the removable media with respect to the slot loading mechanism,
The signal transmission device constantly supplies power to the switch from the constant power supply device, and the switch is opened and closed according to the insertion / ejection operation of the removable medium with respect to the slot loading mechanism. Is to change the input level of
The information processing apparatus according to claim 1 or 2.   A power supply control circuit of the information recording / reproducing apparatus is electrically connected to the switch and prevents current from a power source that is always supplied from the constant power supply apparatus to flow into the information recording / reproducing apparatus. The information processing apparatus according to claim 3, further comprising a current flow blocking device.   5. The information processing apparatus according to claim 3, further comprising a low-pass filter for removing noise based on chattering generated in the switch.   In response to a detection signal from the media detection device that a removable medium has been inserted into the slot loading mechanism, the power control device is operated to supply power from the power supply device to the information recording / reproducing device and the information device control device. 6. An operation state holding device for setting the operation state and holding the operation state even after the removable medium is subsequently ejected from the slot loading mechanism. The information processing apparatus described.

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