JP2004227665A - Recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording/reproducing device for loading a disk cartridge housing an optical disk and recording data in the optical disk, capable of correctly recording data even in the long-period loaded state of the disk cartridge. <P>SOLUTION: This device is provided with a shutter opening/closing means for opening/closing a shutter in linkage with the insertion of a disk cartridge, a turntable for holding an optical disk, a motor for rotating the turntable, a recording/reproducing means for recording/reproducing data in/from the optical disk, a time output means for outputting time information, a detection means for detecting the nonrotation of the motor, and a control means for controlling the rotation of the motor and the recording/reproducing means. The control means executes control to rotate the motor only by a predetermined angle in which the exposed parts of the optical disk from the shutter are not overlapped when it is determined that the motor is not rotated for a predetermined time based on the time information output from the time output means and the detection result of the detection means. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording / reproducing apparatus for recording or reproducing an optical disk contained in a disk cartridge.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a recording / reproducing apparatus that records and reproduces call information transmitted and received via a telephone line is known. 2. Description of the Related Art A conventional recording / reproducing apparatus includes a main recording unit including a hard disk drive (HDD) and a DAT drive to which a digital audio tape (DAT) can be attached and detached. A storage unit for storage is provided (for example, see Patent Document 1).
FIG. 6 is a block diagram showing a conventional recording / reproducing apparatus.
The recording / reproducing apparatus 100 includes an incoming call detection unit 2, an audio processing unit 3, an audio output unit 4, a main recording unit 6, a storage recording unit 7, an operation / display unit 9, a clock unit 10, and a control unit 500.
[0003]
The incoming call detection unit 2 receives a Dual Tone Multi Frequency (DTMF) code transmitted from the calling telephone connected to the telephone line, and notifies that the telephone line has been connected. Detect and output a detection signal to the control unit 500. The DTMF code includes information such as the telephone number of the called party. Therefore, when the DTMF code is recorded in the main recording unit 7 together with the call information, the call information can be searched using the DTMF code.
[0004]
The audio processing unit 3 compresses an audio signal input from a telephone line and converts it into audio data. Further, the audio processing unit 3 expands the audio data recorded in the main recording unit 7 and outputs it to the audio output unit 4. The audio output unit 4 converts the expanded audio data into an analog audio signal and outputs it.
[0005]
When the detection signal is input from the incoming call detection unit 2, the control unit 500 controls the main recording unit 6 to record the audio data together with the DTMF code. The main recording unit 6 is composed of an HDD, and records the audio data converted by the audio processing unit 3 under the control of the control unit 500 together with the DTMF code on a hard disk (Hard Disk) (hereinafter referred to as HD). The clock unit 10 includes a crystal oscillation circuit, and outputs pulse signals at predetermined intervals from the crystal oscillation circuit.
[0006]
The storage recording unit 7 includes a DAT drive, and records audio data in the DAT under the control of the control unit 500. The control unit 500 stores the audio data recorded on the HD of the main recording unit 6 in the DAT of the storage unit 7 at predetermined time intervals, for example, every 24 hours, based on the pulse signal output from the clock unit 10. The main storage unit 7 and the storage recording unit 7 are controlled to perform backup. The DAT whose call information is backed up by the storage unit 7 is taken out from the storage unit 7 and stored.
[0007]
The operation / display unit 9 outputs an instruction signal for backing up the call information of the main recording unit 6 to the storage recording unit 7. The operation / display unit 9 outputs an instruction signal for instructing to reproduce the call information recorded in the main recording unit 6 and the storage recording unit 7. The operation / display unit 9 includes a display unit that displays an operation state of the recording / reproducing device 100.
[0008]
The control unit 500 backs up the audio data recorded on the HD of the main recording unit 6 to the DAT of the storage unit 7 in response to the instruction signal output from the operation / display unit 9, or controls the HD of the main recording unit 6. The audio processing unit 3, the audio output unit 4, the main recording unit 6, and the storage recording unit 7 are controlled so as to reproduce the audio data recorded in the DAT of the storage recording unit 7.
[0009]
The conventional recording / reproducing apparatus 100 uses an HDD that can be randomly accessed at high speed for the main recording unit 6, thereby immediately searching for and reproducing desired audio data from the audio data recorded on the HD of the main recording unit 6. can do. However, since the HD has a limited capacity for recording call information, the call information recorded in the main recording unit 6 is backed up to the DAT by the storage recording unit 7 every 24 hours, and is stored in the HD of the main recording unit 6. A configuration in which the main recording unit 6 can always record new call information by erasing the audio data stored in the DAT from the recorded audio data to secure a newly recordable capacity. It has become.
[0010]
A DAT drive used as a second recording unit of a conventional recording / reproducing apparatus records audio data on a DAT which is a tape medium. It takes a long time to search and reproduce the audio data. For this reason, instead of using a DAT drive as the storage unit 7, an optical disk drive such as an MO drive that uses a MO (Magneto Optical disk) as a recording medium for recording call information on a disk made of a magneto-optical disk is used. Compared with a conventional DAT drive, recorded call information can be quickly searched and reproduced.
[0011]
2. Description of the Related Art A conventional optical disk drive records audio data such as call information on a removable disk cartridge, and reproduces audio data recorded on the disk cartridge (for example, see Patent Document 2).
[0012]
FIG. 7 is a diagram showing a conventional disk cartridge and an optical disk drive.
The disk cartridge 20 includes a disk 21, a case 22, and a shutter 23. The disk 21 is made of a magneto-optical disk, has a center hole 211 at substantially the center, and is housed inside the case portion 22. The case portion 22 has holes 222 and 223 on the upper surface and the lower surface, respectively, and the surface of the disk 21 is exposed to the outside from each hole. The case portion 22 has a concave portion 221 at one end from the upper surface to the lower surface via the side surface. The shutter 23 has a U-shape, and is held by the case 22 so that the recess 221 can slide.
[0013]
The optical disk drive has an insertion port 16 on the front surface of a housing 15 for inserting a disk cartridge 20 in the direction of arrow B. The optical disk drive includes an optical pickup 702, a magnetic head 703, a head driving unit 704, a turntable 705, a shutter opening / closing unit 707, a mechanical base (not shown), a cartridge holder, a spindle motor, and a control unit inside a housing 15. The cartridge holder holds the disc cartridge 20 inserted from the insertion slot 16. The shutter opening / closing unit 707 includes a lever that moves in conjunction with the insertion of the disk cartridge 20 and an engaging unit that engages with the shutter 23. In conjunction with the insertion of the disk cartridge 20 in the direction of arrow B, the engaging portion automatically slides the shutter 23 in the direction of arrow C to open the holes 222 and 223 of the disk cartridge 20. The shutter opening / closing unit 707 slides the shutter 23 of the disk cartridge 20 to close the holes 222 and 223 of the disk cartridge 20 in conjunction with the ejection of the disk cartridge 20 to the outside of the recording / reproducing apparatus 100.
[0014]
The turntable 705 holds the center hole 211 of the disk 21. The turntable 705 rotates the disk 21 when the spindle motor rotates. The optical pickup 702 is arranged at a position below the hole 223 of the disk 21, irradiates the lower surface of the disk 21 with laser light through the hole 223 of the case 22, and reads data recorded on the disk 21. The control unit controls to reproduce the data read by the optical pickup 702.
[0015]
The magnetic head 703 includes a disk contact portion (not shown) and a magnetic field applying portion at a position above the contact portion, and is fixed to the head driving portion 704, respectively. The magnetic head 703 is driven by the head driving unit 704, the contact portion contacts the upper surface of the disk 21 via the hole 222 of the case portion 22, and the magnetic field applying unit applies an NS pole magnetic field to the disk 21. The control unit performs focus control, tracking control, and laser output control of the optical pickup 702. The control unit controls the optical pickup 702 and the magnetic head 703 to record data on the disk 21. The magnetic application unit of the magnetic head 703 applies a magnetic field to the disk 21 under the control of the control unit. The optical pickup 702 irradiates a laser to the disk 21 while the magnetic head 703 is applying a magnetic field under the control of the control unit, and sets the magnetization direction of the magnetization film of the disk 21 to a certain temperature or higher by changing the magnetization direction of the magnetization film. Invert and record the data.
[0016]
With this configuration, the conventional optical disk drive records data on the disk 21 inside the disk cartridge 20 and reads and reproduces data recorded on the disk 21.
[0017]
As described above, by using the optical disk drive instead of using the DAT drive as the storage recording unit 7 of the conventional recording and reproducing apparatus 100, it is possible to quickly search and reproduce the recorded audio data as compared with the conventional DAT drive. Can be.
[0018]
[Patent Document 1]
JP 2001-127877 A
[Patent Document 2]
JP-A-5-250787
[Problems to be solved by the invention]
In the conventional optical disk drive, when the disk cartridge 20 is inserted, the shutter 23 of the disk cartridge 20 is opened and a part of the surface of the disk 21 is exposed from the hole 222.
[0021]
When a conventional optical disk drive is used as the storage recording unit 7 of the recording / reproducing apparatus 100, the optical disk drive backs up the audio data recorded in the main recording unit 6 every 24 hours with the disk 21 inserted. Do. When the above-described backup operation is not performed, the optical disk drive stops rotating the disk 21 with the disk 21 inserted. When the rotation of the disk 21 is stopped, a part of the disk surface remains exposed from the hole 222. For this reason, dust floating in the air enters through the hole 222 of the disk cartridge 20 and adheres to a part of the upper surface of the disk 21 during this time.
[0022]
In a state in which dust that has entered through the hole 222 adheres to a part of the upper surface of the disk 21, a magnetic field is applied to the disk 21 by the magnetic head 703 to back up the audio data recorded in the main recording unit 6 to the disk 21 of the storage unit 7. In the case where the dust is applied, a portion of the disk 21 where the dust adheres is in a state where the contact portion of the magnetic head 703 rides on the adhered dust. As a result, the distance between the magnetic field application unit of the magnetic head 703 and the upper surface of the disk 21 is larger than that of the upper surface portion of the disk 21 to which dust is not attached, and the magnetic field intensity applied to the disk 21 is smaller. When the distance between the magnetic field application unit and the disk 21 is increased by a certain amount or more due to dust attached to a part of the upper surface of the disk 21, the magnetization direction of the magnetic film of the disk 21 cannot be reversed, and the optical pickup 702 emits a laser beam. However, the music data cannot be accurately recorded on the disk 21.
[0023]
When the audio data recorded in the main recording unit 6 cannot be backed up by the storage recording unit 7, the storage capacity of the main recording unit 6 becomes saturated, and new audio data is recorded in the main recording unit 6. May not be possible. In this case, the disk cartridge 20 mounted on the storage unit 7 may be replaced with a new disk cartridge. However, when the recording / reproducing apparatus 100 is operated unattended at night or the like, the disk cartridge cannot be replaced.
[0024]
The present invention provides a recording / reproducing apparatus which mounts a disk cartridge containing an optical disk and records data on the optical disk, and which can record data accurately even when the disk cartridge is mounted for a long time. The purpose is to do.
[0025]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a recording / reproducing apparatus in which a disk cartridge having a shutter for storing and opening / closing an optical disk is detachable. Shutter opening / closing means for closing a shutter, a turntable for holding a center hole of the optical disc, a motor for rotating the turntable, recording / reproducing means for recording data on the optical disc or reproducing data recorded on the optical disc, Time output means for outputting time information, detection means for detecting that the motor is not rotating, and control means for controlling the rotation of the motor and controlling the recording and reproducing means, the control means, From the time information output by the time output means and the detection result of the detection means If the serial motor is determined not to be rotating a predetermined time, characterized in that the portion exposed from the shutter of the optical disk to the control for rotating only said motor a predetermined angle which is not duplicated.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. Note that the same reference numerals are used for the same components as those described in the related art.
[0027]
FIG. 1 is a perspective view showing the appearance of an embodiment of the recording / reproducing apparatus of the present invention.
FIG. 2 is a block diagram showing the configuration of one embodiment of the recording / reproducing apparatus of the present invention.
[0028]
The recording / reproducing apparatus 1 includes an insertion port 16 and an operation / display unit 9 on the front surface of a housing 15, and includes a storage recording unit 7 inside the housing 15.
The recording / reproducing apparatus 1 includes an incoming call detection unit 2, an audio processing unit 3, an audio output unit 4, a control unit 5, a main recording unit 6, a storage recording unit 7, a detection unit 8, an operation / display unit 9, and a clock unit 10. Prepare.
[0029]
The incoming call detection unit 2 receives the DTMF code transmitted from the calling telephone connected to the telephone line, detects that the telephone line is connected, and outputs a detection signal to the control unit 5. The DTMF code includes information such as the telephone number of the called party. Therefore, when the DTMF code is recorded in the main recording unit 7 together with the call information, the call information can be searched using the DTMF code.
[0030]
The audio processing unit 3 compresses an audio signal input from a telephone line and converts it into audio data. Further, the audio processing unit 3 expands the audio data recorded in the main recording unit 7 and outputs it to the audio output unit 4. The audio output unit 4 converts the expanded audio data into an analog audio signal and outputs it.
[0031]
When a detection signal is input from the incoming call detector 2, the controller 5 controls the main recording unit 6 to record voice data. The main recording unit 6 includes an HDD, and records the audio data converted by the audio processing unit 3 under the control of the control unit 5 together with the DTMF code in the HD. The clock unit 10 includes a crystal oscillation circuit, and outputs pulse signals at predetermined intervals from the crystal oscillation circuit.
[0032]
The storage recording unit 7 records the audio data on the disk cartridge 20 under the control of the control unit 5. The configuration of the disk cartridge 20 will be described later. Based on the time information output from the clock unit 10, the control unit 5 outputs the audio data recorded in the main recording unit 6 at predetermined time intervals, for example, every 24 hours, to a disk mounted on the storage recording unit 7. The main recording unit 6 and the storage recording unit 7 are controlled so as to be backed up in the cartridge 20.
[0033]
The operation / display unit 9 outputs an instruction signal for backing up the audio data recorded in the main recording unit 6 to the storage recording unit 7. Further, the operation / display unit 9 outputs an instruction signal instructing to reproduce the audio data recorded in the main recording unit 6 and the storage recording unit 7. The operation / display unit 9 includes a display unit that displays an operation state of the recording / reproducing device 1.
[0034]
The control unit 5 backs up the audio data recorded in the main recording unit 6 to the storage recording unit 7 in response to the instruction signal output from the operation / display unit 9, and stores the audio data in the main recording unit 6 and the storage recording unit 7. The audio processing unit 3, the audio output unit 4, the main recording unit 6, and the storage recording unit 7 are controlled so as to reproduce the recorded audio data.
[0035]
3A and 3B are views showing the configuration of the disk cartridge 20, wherein FIG. 3A is a top view, FIG. 3B is a bottom view, and FIG. 3C is a state in which the shutter 23 has been slid from the state of FIG. FIG. 3D is a bottom view of FIG. 3C.
[0036]
The disk cartridge 20 includes a disk 21, a case 22, and a shutter 23. The disk 21 is made of a magneto-optical disk, has a center hole 211 at substantially the center, and is housed inside the case portion 22. The case part 22 includes holes 222 and 223 penetrating through the upper surface and the lower surface, respectively. The case portion 22 has a concave portion 221 at one end from the upper surface to the lower surface via the side surface. The shutter 23 has a U-shape, and is held by the case 22 so that the concave portion 221 can slide in the directions of arrows C and D. When the shutter 23 is slid in the direction of arrow C, the disk cartridge 20 is in a state where the holes 222 and 223 of the case 22 are opened, and as shown in FIGS. 3C and 3D, the holes 222 and A part of the surface of the disk 21 is exposed from 223.
[0037]
FIG. 4 is a diagram showing a storage recording unit 7 of the recording / reproducing apparatus 1 according to one embodiment of the present invention. FIG. 4 (a) is a top view showing a state where a disk cartridge 20 is inserted, and FIG. 4) is a side view of FIG.
[0038]
The storage recording unit 7 includes a mechanical base 701, an optical pickup 702, a magnetic head 703, a head driving unit 704, a turntable 705, a spindle motor 706, a shutter opening / closing unit 707, a cartridge holder (not shown), and a control unit. The mechanical base 701 holds an optical pickup 702, a head driving unit 704, a spindle motor 706, and a shutter opening / closing unit 707.
[0039]
The cartridge holder holds the disc cartridge 20 inserted from the insertion slot 16. The shutter opening / closing unit 707 includes a lever that moves in conjunction with the insertion of the disk cartridge 20 and an engaging portion that engages with the shutter 23. Slides the shutter 23 in the direction of arrow C to open the holes 222 and 223 of the disc cartridge 20. The shutter opening / closing unit 707 slides the shutter 23 of the disk cartridge 20 in conjunction with the ejection of the disk cartridge 20 to close the holes 222 and 223 of the disk cartridge 20.
[0040]
The spindle motor 706 rotates a turntable 705 fixed to a shaft under the control of the control unit. The turntable 705 holds the center hole 211 of the disk 21 and rotates the disk 21. The optical pickup 702 is disposed below the hole 223 of the case section 22, irradiates the disk 21 with laser light through the hole 223, and reads audio data recorded on the disk 21. The optical pickup 702 irradiates the disk 21 with laser light for recording audio data under the control of the control unit. The control unit controls the audio data read by the optical pickup 702 to be reproduced. The magnetic head 703 is driven by a head drive unit 704 and applies a magnetic field of the NS pole to the upper surface of the disk 21 via the hole 222 of the case unit 22. The control unit performs focus control, tracking control, and laser output control of the optical pickup 702. Further, the control unit controls to record audio data on the disk 21 by the magnetic field from the magnetic head 703 and the laser from the optical pickup 702.
[0041]
The detecting unit 8 shown in FIG. 2 includes a slide switch (not shown) that moves in conjunction with the insertion of the disc cartridge 20 and returns to the original position in conjunction with the ejection of the disc cartridge 20. The detecting unit 8 detects whether or not the disc cartridge 20 is mounted on the storage unit 7 by using the slide switch. The detection unit 8 includes a power detection unit 8a that detects whether power is supplied to the spindle motor 706. The detection unit 8 detects whether or not the power is supplied to the spindle motor 706 and rotated by the power detection unit 8a.
[0042]
Based on the time information output from the clock unit 10, the control unit 5 shown in FIG. 2 determines in advance the time during which the spindle motor 706 is not rotating while the disk cartridge 20 detected by the detection unit 8 is inserted. When it is determined that a predetermined time, for example, 4 hours, has elapsed, the storage controller 7 is controlled to rotate the spindle motor 706 by a predetermined angle.
[0043]
FIG. 5 is a diagram showing a storage recording unit 7 of the recording / reproducing apparatus 1 according to one embodiment of the present invention. FIG. 5 (a) is a top view showing a state where a disk cartridge 20 is inserted, and FIG. FIG. 6 is a top view showing a state after four hours have passed from the state of FIG.
[0044]
As shown in FIG. 5A, a portion where a part of the surface of the disk 21 is exposed from the hole 222 in a state where the shutter 23 is opened by the shutter opening / closing portion 707 is indicated by a range E.
[0045]
When the control unit 5 determines that the time during which the disk of the disk cartridge 20 has not been rotated for four hours has elapsed from the state of FIG. 5A based on the time information output from the clock unit 10, the control unit 5 controls the spindle motor 706 to operate. Control is performed so as to rotate by a predetermined angle. As the spindle motor 706 rotates, the disk 21 held on the turntable 705 rotates in the direction of arrow A as shown in FIG. Then, the range E of the disk 21 is not exposed from the hole 222, and a region different from the range E is exposed from the hole 222.
[0046]
With the above configuration, for example, as shown in FIG. 5B, the rotation angle at which the spindle motor 706 rotates in the direction of arrow A under the control of the control unit 5 is set to 60 degrees, and the main recording unit 6 is switched to the storage recording unit 7. The audio data is backed up every 24 hours. As a result, the disc 21 rotates 60 degrees every time 4 hours when the turntable 705 does not rotate.
[0047]
This can prevent dust from adhering to only a part of the surface of the disk 21 exposed from the hole 222. Therefore, when the storage recording unit 7 attempts to back up the audio data recorded in the main recording unit 6, it is possible to prevent that the audio data cannot be backed up due to dust attached to the surface of the disk 21. it can.
[0048]
【The invention's effect】
According to the present invention, in a recording / reproducing apparatus for mounting a disk cartridge containing an optical disk and recording data on the optical disk, the recording / reproducing apparatus can record data accurately even when the disk cartridge is mounted for a long time. Can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the appearance of an embodiment of a recording / reproducing apparatus according to the present invention.
FIG. 2 is a block diagram showing the configuration of an embodiment of the recording / reproducing apparatus of the present invention.
FIG. 3 is a diagram showing a configuration of a disk cartridge 20.
FIG. 4 is a diagram showing a storage recording unit 7 of the recording and reproducing apparatus 1 according to one embodiment of the present invention.
FIG. 5 is a diagram showing a state in which a spindle motor 706 of a storage recording unit 7 of the recording / reproducing apparatus 1 according to an embodiment of the present invention is rotated.
FIG. 6 is a block diagram showing a conventional recording / reproducing apparatus.
FIG. 7 is a diagram showing a conventional disk cartridge and an optical disk drive.
[Explanation of symbols]
1 recording / reproducing device, 2 incoming call detection unit, 3 audio processing unit, 4 audio output unit,
5 control unit, 6 main recording unit, 7 storage recording unit, 701 mechanism base,
702 optical pickup, 703 magnetic head, 704 head driving unit,
705 turntable, 706 spindle motor, 707 shutter opening / closing unit,
8 detection unit, 9 operation / display unit, 10 clock unit,
15 housing, 16 insertion slot,
20 disc cartridge, 21 disc, 211 center hole,
22 case portion, 221 concave portion, 222 hole, 223 hole,
23 shutter, 100 recording / reproducing device, 500 control unit

Claims (1)

In a recording / reproducing apparatus in which a disk cartridge having a shutter for storing and opening and closing an optical disk is detachable,
Shutter opening and closing means for opening a shutter in conjunction with insertion of a disc cartridge and closing the shutter in conjunction with ejection of a disc cartridge, a turntable for holding a center hole of the optical disc, a motor for rotating the turntable, and data for the optical disc. Recording / reproducing means for recording data or reproducing data recorded on an optical disc, time output means for outputting time information, detection means for detecting that the motor is not rotating, rotation control of the motor, Control means for controlling the recording and reproducing means,
When the control unit determines that the motor is not rotating for a predetermined time based on the time information output by the time output unit and the detection result of the detection unit, the portion of the optical disc exposed from the shutter does not overlap. A recording / reproducing apparatus for controlling rotation of the motor by a predetermined angle.

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