WO2013073188A1 - 車載用光ディスク装置 - Google Patents
車載用光ディスク装置 Download PDFInfo
- Publication number
- WO2013073188A1 WO2013073188A1 PCT/JP2012/007343 JP2012007343W WO2013073188A1 WO 2013073188 A1 WO2013073188 A1 WO 2013073188A1 JP 2012007343 W JP2012007343 W JP 2012007343W WO 2013073188 A1 WO2013073188 A1 WO 2013073188A1
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- temperature
- main cpu
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- optical disk
- cpu
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
- G11B33/144—Reducing the influence of the temperature by detection, control, regulation of the temperature
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/121—Protecting the head, e.g. against dust or impact with the record carrier
Definitions
- the present invention relates to an in-vehicle optical disc device.
- a conventional in-vehicle optical disc apparatus includes an optical disc drive unit, a loading unit that conveys the optical disc to the drive unit, or that takes out the optical disc from the drive unit, and reading data from the optical disc driven by the drive unit, or an optical disc
- An optical pickup unit that writes data to the optical pickup unit, and a unit connected to the optical pickup unit, the loading unit, and the driving unit.
- a temperature sensor is connected to the control unit.
- the optical disk device described in Patent Document 1 generates wind by the microcomputer driving the optical disk by controlling the motor drive unit, and this wind cools the optical pickup unit, for example. try to.
- the optical disc apparatus described in Patent Document 1 described above generates wind by driving the optical disc, and attempts to cool the optical pickup unit with this wind.
- the interior of the vehicle is often in a very high temperature state, and when it is in a high temperature state, the microcomputer has already stopped functioning, so the drive unit cannot be started.
- An object of the present invention is to provide an in-vehicle optical disc apparatus capable of shortening the stop time of the data reading operation from the optical disc or the data writing operation to the optical disc when the in-vehicle temperature is high.
- the present invention provides an optical disk drive unit, a loading unit that transports the optical disk to the drive unit, or takes out the optical disk from the drive unit, and reading data from the optical disk driven by the drive unit, or An optical pickup unit for writing data to the optical disc; and a control unit connected to the optical pickup unit, a loading unit, and the drive unit, wherein the control unit is connected to the drive unit and the optical pickup unit.
- a main CPU that is connected; a sub CPU that is connected to the loading unit and the driving unit; and a temperature sensor that detects a temperature of the main CPU; and the temperature of the main CPU detected by the temperature sensor is a set temperature. If it exceeds, the sub-CPU provides an in-vehicle optical disk device that drives the drive unit. It is to be.
- An in-vehicle optical disc device includes an optical disc drive unit, a loading unit that transports the optical disc to the drive unit or takes out the optical disc from the drive unit, and the optical disc that is driven by the drive unit.
- An optical pickup unit that reads data from or writes data to the optical disc
- a control unit connected to the optical pickup unit, a loading unit, and the drive unit, and the control unit includes the drive unit And a main CPU connected to the optical pickup unit, a sub CPU connected to the loading unit and the driving unit, and a temperature sensor for detecting the temperature of the main CPU, and the main CPU detected by the temperature sensor.
- the sub CPU drives the drive unit. It is a configuration. For this reason, the stop time of the data reading operation from the optical disk or the data writing operation to the optical disk when the in-vehicle temperature is high can be shortened.
- the drive unit is driven by the sub CPU while the operation of the main CPU is stopped and the temperature rise by the main CPU is stopped.
- the cooling of the main CPU proceeds with the wind based on the driving of the optical disk, and as a result, the stop time of the data reading operation from the optical disk or the data writing operation to the optical disk until the main CPU is restarted can be shortened. .
- the figure which shows the inside front of the motor vehicle carrying the vehicle-mounted optical disk apparatus of one Embodiment. 1 is a block diagram showing an internal configuration of an in-vehicle optical disc device according to an embodiment.
- FIG. 1 is a view showing the front of an automobile equipped with an in-vehicle optical disc device according to an embodiment.
- a driver's seat 3 and a passenger seat 4 are provided in front of the interior 2 of the automobile 1.
- a handle 5 is provided in front of the driver's seat 3, and an in-vehicle optical disc device 6 is disposed on the left side of the handle 5.
- FIG. 2 is a block diagram showing the internal configuration of the in-vehicle optical disc device 6.
- the in-vehicle optical disk device 6 includes a drive unit 8, a motor driver 9, a loading unit 10, a motor driver 11, an optical pickup unit 22, an actuator driver 12, a control unit 13, A startup CPU 16, a display unit 18, a power source 19, a switch 20, and a switch 21 are provided.
- the drive unit 8 includes a spindle motor that drives the optical disc 7.
- the motor driver 9 drives the spindle motor of the drive unit 8.
- the loading unit 10 includes a loading motor that transports the optical disc 7 to the drive unit 8 or takes out the optical disc 7 from the drive unit 8.
- the motor driver 11 drives the loading motor of the loading unit 10.
- the optical pickup unit 22 includes an optical pickup that reads data from the optical disk 7 driven by the driving unit 8 or writes data to the optical disk 7.
- the actuator driver 12 drives the optical pickup of the optical pickup unit 22.
- a control unit 13 is connected to the optical pickup unit 22, the loading unit 10, and the drive unit 8.
- the control unit 13 includes an LSI temperature that detects the temperatures of the main CPU 14 connected to the drive unit 8 and the optical pickup unit 22, the sub CPU 15 connected to the loading unit 10 and the drive unit 8, and the main CPU 14, the sub CPU 15, and the startup CPU 16. And a sensor 17.
- the drive unit 8 is driven by the sub CPU 15.
- a display unit 18 is connected to the main CPU 14 and the activation CPU 16.
- the sub CPU 15 opens and closes a switch 20 provided between the main CPU 14 and the power supply 19. Further, the sub CPU 15 drives the switch 21 that selectively switches the main CPU 14 and the sub CPU 15 to the motor driver 9.
- Step S1 in FIG. 3 when the optical disk 7 is not in the in-vehicle optical disk device 6 (step S1 in FIG. 3), when the user drives the vehicle engine (step S2 in FIG. 3), the activation CPU 16 is activated and the sub CPU 15 is activated. (Step S3 in FIG. 3). When the sub CPU 15 is activated and the switch 20 is closed, the main CPU 14 is connected to the power supply 19 via the switch 20 and the main CPU 14 is activated (step S4 in FIG. 3). Subsequently, when the user inserts the optical disk 7 into the in-vehicle optical disk device 6 (step S5 in FIG. 3), the sub CPU 15 detects the insertion of the optical disk 7 and activates the loading unit 10 via the motor driver 11. (Step S6 in FIG. 3). That is, the optical disc 7 is drawn into the in-vehicle optical disc device 6 and is rotated by the spindle motor of the drive unit 8, and the optical pickup unit 22 reads data.
- step S7 in FIG. 3 when the optical disk 7 is already in the in-vehicle optical disk device 6 (step S7 in FIG. 3), when the user drives the engine of the vehicle (step S8 in FIG. 3), the activation CPU 16 is activated and the sub CPU 15 is activated. Start (step S9 in FIG. 3).
- the main CPU 14 is connected to the power supply 19 via the switch 20 and the main CPU 14 is activated (step S10 in FIG. 3).
- step S10 in FIG. 3 the main CPU 14 confirms the disk position and recognizes the clamped state, and the optical pickup unit 22 reads data (step S11 in FIG. 3).
- Step S12 Since the optical pickup unit 22 is provided with a temperature sensor (not shown), the temperature of the optical pickup unit 22 is measured by this temperature sensor (not shown). Each temperature of the main CPU 14, sub CPU 15, or activation CPU 16 is measured by an LSI temperature sensor 17.
- the main CPU 14 cuts off the power supply when the temperature reaches, for example, 50 ° C. (an example of the set temperature) due to the influence of the temperature inside the vehicle.
- the sub CPU 15 and the startup CPU 16 cut off the power supply for safety at, for example, 100 ° C., but the power supply is not cut off in a normal use state. Therefore, in step S12 of FIG. 4, it is determined whether or not the temperature of the main CPU 14 exceeds 50 ° C. (an example of a set temperature). For example, in a season other than summer, the in-vehicle temperature does not become so high, so the determination in step S12 in FIG. 4 is NO, and the process proceeds to step S13.
- step S13 the activation CPU 16 issues a reproduction instruction to the sub CPU 15. Subsequently, the sub CPU 15 issues a reproduction instruction to the main CPU 14 (step S14 in FIG. 4).
- step S13 the sub CPU 15 closes the switch 20, supplies power from the power power source 19 to the main CPU 14, and switches the switch 21 to the main CPU 14 side.
- the main CPU 14 drives the optical disc 7 by driving the spindle motor of the drive unit 8 via the motor driver 9. Further, the main CPU 14 drives the optical pickup unit 22 via the actuator driver 12 and reads data from the optical disc 7. Based on the data read from the optical disc 7, the main CPU 14 performs processing for displaying video or characters on the display unit 18, and performs processing for outputting sound from a speaker (not shown) (step S15 in FIG. 4). .
- step S12 of FIG. 4 when the temperature of the optical pickup unit 22 is abnormally high or the temperature of the main CPU 14 or the like is abnormally high in step S12 of FIG. 4, the sub CPU 15 notifies the activation CPU 16 of the temperature abnormality and also displays the display unit 18. Processing for displaying a temperature abnormality is performed (step S17 in FIG. 5). In step S16 of FIG. 4, when there is a similar temperature abnormality, the process proceeds to step S17. After step S17, the sub CPU 15 opens the switch 20 to cut off the power supply to the main CPU 14 and stops the main CPU 14 (step S18 in FIG. 5).
- the sub CPU 15 switches the switch 21 from the main CPU 14 to the sub CPU 15 (step S19 in FIG. 5).
- the sub CPU 15 determines whether or not the optical disk 7 is set in the spindle motor of the drive unit 8 (step S20 in FIG. 5). If the optical disk 7 is set, the sub CPU 15 drives the spindle motor of the drive unit 8 via the motor driver 9, and rotationally drives the optical disk 7 for cooling (step S21 in FIG. 5). Next, it is determined whether or not the temperature of the optical pickup unit 22 and the temperatures of the main CPU 14 and the like have become equal to or lower than the respective set values by this cooling operation (step S22 in FIG. 5). When it becomes lower, the drive of the spindle motor of the drive unit 8 is stopped (step S23 in FIG. 5).
- the sub CPU 15 processes the start CPU 16 to display on the display unit 18 that the optical disk 7 is set (step S24 in FIG. 5).
- the activation CPU 16 instructs the sub CPU 15 to reproduce the optical disk 7 (step S25 in FIG. 5).
- the sub CPU 15 closes the switch 20 and switches the switch 21 from the sub CPU 15 side to the main CPU 14 side (step S26 in FIG. 5).
- power is supplied from the power source 19 to the main CPU 14 (step S27 in FIG. 5).
- step S27 the process proceeds to step S14 shown in FIG. 4, and the sub CPU 15 issues a reproduction instruction to the main CPU 14. Thereafter, the reproduction of the optical disk 7 shown in step S15 and the temperature rise determination shown in step S16 are performed.
- the operation of the main CPU 14 is stopped and the temperature rise by the main CPU 14 is stopped.
- the driving unit 8 is driven by the sub CPU 15 to promote cooling by wind based on the driving of the optical disk 7. For this reason, the cooling of the main CPU 14 proceeds and the main CPU 14 is activated again.
- the stop time of the data reading operation from the optical disc 7 or the data writing operation to the optical disc 7 when the vehicle interior temperature is high can be shortened.
- An in-vehicle optical disc device includes an optical disc drive unit, a loading unit that transports the optical disc to the drive unit or takes out the optical disc from the drive unit, and the optical disc that is driven by the drive unit.
- An optical pickup unit that reads data from or writes data to the optical disc
- a control unit connected to the optical pickup unit, a loading unit, and the drive unit, and the control unit includes the drive unit And a main CPU connected to the optical pickup unit, a sub CPU connected to the loading unit and the driving unit, and a temperature sensor for detecting the temperature of the main CPU, and the main CPU detected by the temperature sensor.
- the sub CPU drives the drive unit. It is a configuration. For this reason, the stop time of the data reading operation from the optical disk or the data writing operation to the optical disk when the in-vehicle temperature is high can be shortened.
- the drive unit is driven by the sub CPU while the operation of the main CPU is stopped and the temperature rise by the main CPU is stopped.
- the cooling of the main CPU proceeds with the wind based on the driving of the optical disk, and as a result, the stop time of the data reading operation from the optical disk or the data writing operation to the optical disk until the main CPU is restarted can be shortened. .
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
2 車内
3 運転席
4 助手席
5 ハンドル
6 車載用光ディスク装置
7 光ディスク
8 駆動部
9 モータドライバ
10 ローディング部
11 モータドライバ
12 アクチュエータドライバ
13 制御部
14 メインCPU
15 サブCPU
16 起動CPU
17 LSI温度センサ
18 表示部
19 パワー電源
20 スイッチ
21 スイッチ
22 光ピックアップ部
Claims (4)
- 光ディスクの駆動部と、
前記光ディスクを前記駆動部に搬送する、または、前記光ディスクを前記駆動部から取り出すローディング部と、
前記駆動部によって駆動された前記光ディスクからのデータの読み出し、または、前記光ディスクへのデータの書き込みを行う光ピックアップ部と、
前記光ピックアップ部、前記ローディング部及び前記駆動部に接続した制御部と、を備え、
前記制御部は、
前記駆動部及び前記光ピックアップ部に接続したメインCPUと、
前記ローディング部及び前記駆動部に接続したサブCPUと、
前記メインCPUの温度を検出する温度センサと、を有し、
前記温度センサが検出した前記メインCPUの温度が設定温度を超えた場合には、前記サブCPUが前記駆動部を駆動する、車載用光ディスク装置。 - 前記温度センサが検出した前記メインCPUの温度が前記設定温度を超えた場合には、前記サブCPUが前記駆動部と前記ローディング部とを駆動する、請求項1に記載の車載用光ディスク装置。
- 前記温度センサが検出した前記メインCPUの温度が前記設定温度を超えた場合には、前記サブCPUが表示部に温度異常を表示するよう処理する、請求項1または2に記載の車載用光ディスク装置。
- 前記サブCPUに起動CPUが接続され、
前記温度センサが検出した前記メインCPUの温度が前記設定温度を超えた場合には、前記サブCPUが前記起動CPUに温度異常を通知する、請求項3に記載の車載用光ディスク装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US14/358,530 US8929187B2 (en) | 2011-11-15 | 2012-11-15 | Onboard optical disc device |
EP12849672.6A EP2782099B1 (en) | 2011-11-15 | 2012-11-15 | Onboard optical disk device |
CN201280056116.6A CN103988261B (zh) | 2011-11-15 | 2012-11-15 | 车载光盘装置 |
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JP2011-249270 | 2011-11-15 | ||
JP2011249270 | 2011-11-15 |
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WO2013073188A1 true WO2013073188A1 (ja) | 2013-05-23 |
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PCT/JP2012/007343 WO2013073188A1 (ja) | 2011-11-15 | 2012-11-15 | 車載用光ディスク装置 |
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US (1) | US8929187B2 (ja) |
EP (1) | EP2782099B1 (ja) |
JP (1) | JPWO2013073188A1 (ja) |
CN (1) | CN103988261B (ja) |
WO (1) | WO2013073188A1 (ja) |
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JP2009146552A (ja) * | 2007-12-18 | 2009-07-02 | Hitachi Ltd | 情報記録再生装置 |
JP2011211103A (ja) * | 2010-03-30 | 2011-10-20 | Aisin Aw Co Ltd | ナビゲーション装置におけるcpuの冷却構造、ナビゲーション装置 |
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2012
- 2012-11-15 CN CN201280056116.6A patent/CN103988261B/zh active Active
- 2012-11-15 JP JP2013544137A patent/JPWO2013073188A1/ja active Pending
- 2012-11-15 WO PCT/JP2012/007343 patent/WO2013073188A1/ja active Application Filing
- 2012-11-15 US US14/358,530 patent/US8929187B2/en active Active
- 2012-11-15 EP EP12849672.6A patent/EP2782099B1/en active Active
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JP2002251816A (ja) * | 2001-02-26 | 2002-09-06 | Sharp Corp | ディスク録再装置 |
JP2007102956A (ja) | 2005-10-06 | 2007-04-19 | Hitachi Ltd | 光ディスク装置及び光ピックアップの冷却方法 |
JP2009146552A (ja) * | 2007-12-18 | 2009-07-02 | Hitachi Ltd | 情報記録再生装置 |
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Non-Patent Citations (1)
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See also references of EP2782099A4 |
Also Published As
Publication number | Publication date |
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CN103988261B (zh) | 2016-05-25 |
US8929187B2 (en) | 2015-01-06 |
EP2782099A1 (en) | 2014-09-24 |
EP2782099B1 (en) | 2018-01-03 |
US20140328152A1 (en) | 2014-11-06 |
JPWO2013073188A1 (ja) | 2015-04-02 |
EP2782099A4 (en) | 2015-12-16 |
CN103988261A (zh) | 2014-08-13 |
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