JPH09306084A - Optical disk recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an operation of a disk to be continued for a long time at the time of supplying a power source by means of battery drive by providing a rotation control means for controlling a rotating speed of the disk at multistage steps in accordance with the capacity of supplying an external power source. SOLUTION: The power source supply side and a CR-ROM/CD-ROM reproducing device are connected up via a CD-ROM interface part 9 and a host CPU interface part 10. A signal from a power source supply capacity judging means 11 is transmitted in the interface parts 9 and 10, or alternatively, information of the power source capacity judging means 11 is transmitted to a microcomputer 6 in the CD-ROM reproducing device by an interface command from a host CPU 12. Then, information is sent from a battery voltage detecting means 13 to the host CPU 12, where a command of rotation control is issued upon receipt of this information to a disk control DSP 4 to perform multistage control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording / reproducing apparatus which controls the rotation of a disk in multiple stages depending on the power supply capacity on the power supply side (whether or not it is battery driven) and the supply state during operation.

[0002]

2. Description of the Related Art Optical discs are expected to be widely used because they can store a large amount of data, are easily random-accessed, and are capable of high-speed access and high-speed reading.

As described above, when optical discs are widely used, there is a demand for an apparatus for reading data recorded on the optical disc at high speed and for recording the data on the disc at high speed.

Further, as the speed increases, the power consumption of the device itself tends to become very large, and this similarly applies to the optical disc device mounted in the portable specification.

[0005]

In the prior art, since the optical disk is rotationally controlled at high speed regardless of the power supply capacity of the supply side, the disk device becomes unusable when the power supply capacity is reduced. .

Further, as the speed increases, the operating time of the optical disk device mounted in a portable device becomes shorter due to the power consumption of the optical disk device.

The present invention sends the state of the supply capability of the power supply side to the optical disc apparatus side when reading or recording the recording / reproducing data on the optical disc at high speed.
By switching the rotation speed control of the disk in multiple stages, it is possible to extend the operating time of a battery-driven optical disk device and operate it stably.

[0008]

According to a first aspect of the present invention, there is provided an optical disc recording / reproducing apparatus which, in the optical disc recording / reproducing apparatus, adjusts the rotation speed of the disc according to the external power supply capability. The optical disk recording / reproducing apparatus is provided with a rotation control means for controlling in multiple stages.

According to a second aspect of the present invention, there is provided the optical disc recording / reproducing apparatus according to the first aspect, wherein the rotation control means receives the information on the power supply capacity from the power supply side directly by a signal when performing the rotation control. Is an optical disc recording / reproducing apparatus.

According to a third aspect of the present invention, in the optical disc recording / reproducing apparatus, the rotation control means provides information about power supply capability and power supply state during operation from the power supply side to an interface command or command option when performing rotation control. The optical disc recording / reproducing apparatus according to claim 1, wherein the optical disc recording / reproducing apparatus receives the information using a unit.

The optical disk recording / reproducing apparatus according to claim 4 is characterized in that the rotation control means carries out multi-step rotation speed control by sending a control command from a control microcomputer. It is a device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.

The contents of the present invention will be described based on a CD-ROM reproducing device which is an embodiment of an optical disk device. The structure is shown in FIG.

In FIG. 1, 1 is an optical disk, 2 is a reproduction pickup unit, 3 is an RF amplifier, 4 is a disk control DSP, 5 is a CD-ROM decoder, 6 is a microcomputer, 7 is a pickup, a motor control driver, 8
Is a spindle motor, and 9 is an interface with the power supply side.

Further, the personal computer main body has a power supply capacity judging means 11 and a battery voltage detecting means 13, which processes the information by the host CPU 12 and sends the information to the microcomputer 6 of the CD-ROM reproducing device through an interface. send.

The microcomputer 6 of the CD-ROM reproducing device sends a rotation control command to the disc control DSP 4 according to the information, and controls the rotation speed in multiple stages.

The CD-ROM disc 1 is a medium in which program data, music data, etc. are recorded.

The reproduction pickup unit 2 is a CD-R.
Bit information recorded on the OM disc is photoelectrically converted, and an RF signal (data information signal) and a pickup control signal are generated by the RF amplifier 3.

The RF signal and the pickup control signal are
The signal is sent to the disk control DSP 4 and the RF signal is decoded.

The decoded data is converted into program data by the CD-ROM decoder 5. The pickup control signal is equalized by the disc control DSP 4 and sent to the driver 7 to control the reproduction pickup unit 2 and the spindle motor 8.

A microcomputer (CPU) 6 controls the disk control DSP 4, controls the CD-ROM decoder 5, reads program data from the CD-ROM decoder 5, and reads subchannel data from the disk control DSP 4.

Power supply side (for example, PC main body) and CD
The -ROM reproducing device is connected through the CD-ROM interface section 9 and the host CPU interface 10. The signal from the power supply capability judging means 11 is passed through the signals of the interface parts 9 and 10, or
CD-R with interface command from host CPU
Power supply capacity determination means 11 for the microcomputer 6 of the OM playback device
Convey information.

Further, the battery voltage detecting means 13 sends the information to the host CPU 12, and the host CPU 12 sends the information to the microcomputer 6 and obtains the information to send a command for rotation control to the disk control DSP in multi-step control. I do.

FIG. 2 is a flow chart showing the operation of the present invention, which will be described below based on the flow.

The system is started up (S1), it is judged whether or not it is battery driven (S2), and if it is battery driven,
Continue to judge whether the battery voltage control method or not (S
3) If not, the battery-driven information is sent to the optical disc device (S4), and the rotation control of the optical disc device is lowered to an appropriate rank (S5).

In the case of the battery voltage control system, the battery drive information is sent to the microcomputer of the optical disk device (S
6) The rotation control of the optical disk device is lowered by one rank (S7).

Information on the battery voltage detecting means is obtained (S8), and it is judged whether the voltage is below the threshold voltage (S9).
If it is not below, the current rotation control is maintained (S10), and if it is below, another rank rotation control is lowered (S1).
1).

If it is determined in S2 that the battery is not driven, the AC power source drive information is transmitted to the microcomputer of the optical disk device (S12), and the rotation control of the optical disk device is performed at the highest speed (S13).

To summarize the above description, according to the present invention, the multi-stage rotation speed switching of the optical disk is sent by using the signal indicating the power supply capacity and the power supply status from the power supply side or the interface command. The following means are used to control the rotation speed of the device.

The power supply side has means for judging whether the battery is driven or not and sending the information to the optical disk device by a signal or an interface command. The optical disk device uses the information to set the rotational speed of the disk in multiple stages. It is characterized by having means for switching.

The rotation control of the optical disk of the present invention can be normally operated at 8 × speed in order to prolong the usage time when it is driven by a battery in a portable function such as a notebook computer. By operating things at 6x speed, 4x speed, etc., the power consumption is suppressed and the battery drive time is extended.

When the power supply side is driven by an AC power supply, the maximum speed (8 times speed) rotation control can be performed to bring out the capacity. As described above, the power supply side can perform the rotation speed control in consideration of power consumption by providing information to the optical disk recording / reproducing driving device side whether the battery drive or the AC power supply drive is performed.

It is also possible to perform rotation control by instructing rotation control from the power supply side using an interface command or the like.

Further, when it is desired to use the battery in a long time mode when driven by a battery, the rotation control of the optical disk can be switched in multiple stages depending on the condition of the battery driving capability, and the optical disk can be used for a long time.

[0035]

According to the present invention, when reading data, the load on the battery is considerably reduced by controlling the rotation by one rank or two ranks lower than the highest speed.

For example, a CD-ROM for 8x speed has been considered recently, but considering that it will be installed in a battery-powered notebook computer, if the power is supplied from an AC power supply, it will be 8x speed. Power consumption can be significantly reduced by performing rotation drive and, in the case of battery drive, performing rotation control at 6 × speed or 4 × speed.

Further, it is effective to enable long-time use, especially in a device driven by a battery, in which power consumption tends to increase as the optical disc rotates at a higher speed.

Further, as an application of this application, the power supply side judges whether or not the data to be read out needs to be read out at high speed, and those which need to be read out at high speed are read out at the highest speed, and those which do not need to be read out. The rotation control can be performed so that the data is read by a method with low power consumption.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

[Explanation of symbols]

 1 Optical Disc (CD-ROM Disc) 2 Playback Pickup Unit 3 RF Amplifier 4 Disc Control DSP 5 CD-ROM Decoder 6 Microcomputer 7 Driver 8 Spindle Motor 9 Interface 10 Host CPU Interface 11 Power Supply Ability Judgment Device 12 Host CPU 13 Battery voltage detection means

Claims (4)

[Claims] 1. A recording / reproducing apparatus for an optical disc, comprising a rotation control means for controlling the rotational speed of the disc in multiple stages according to the supply capability of the external power when the power is supplied from the outside. Optical disk recording / reproducing apparatus. 2. The optical disk recording / reproducing apparatus according to claim 1, wherein the rotation control means receives information on the power supply capability by a signal directly from the power supply side when performing the rotation control. 3. The rotation control means receives information on power supply capability and power supply status during operation from the power supply side by using an interface command or an option part of the command when performing rotation control. The optical disk recording / reproducing apparatus according to claim 1, which is characterized in that. 4. The optical disk recording / reproducing apparatus according to claim 1, wherein the rotation control means controls the rotation speed in multiple stages by sending a control command from a control microcomputer.