JP2001043597A - Information reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the saving of power consumption by supplying the power to only the necessary part in accordance with an information medium to be reproduced and a signal for reproducing and outputting. SOLUTION: By a power supply control part 6 according to the command from a main CPU 5a, in the case a disk 100 is reproduced, which does not include the video/audio information of a back-light 4a when a monitor part cover is closed and of an AV output part 4 when the closed state of cover continues for the specified time, each power supply of an AV demodulation part 3 is stopped to eliminate the unnecessary power consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information reproducing apparatus for reproducing a recording medium on which video / audio information is recorded and a recording medium on which software / data information is recorded. The present invention relates to power saving of an information reproducing apparatus powered by a battery.

[0002]

2. Description of the Related Art In recent years, CDs and DVs have been used as information recording media.
Optical disks such as D are very widespread due to their portability, quick access, mass productivity, and low cost.
Various types of information reproducing apparatuses for reproducing the information have been announced. In particular, an information reproducing apparatus having a thin monitor screen such as a liquid crystal (LCD) panel has attracted attention so that a user can enjoy an image based on the reproduced information without connecting to a TV monitor.

[0003] A conventional information reproducing apparatus will be described below.

FIG. 3 is a perspective view showing the structure of a conventional information reproducing apparatus. In FIG. 3, reference numeral 111 denotes an apparatus main body,
11U has a disk cover 111l for mounting an optical disk (not shown), which is a recording medium to be reproduced, and a rotation holding member for rotating and holding a monitor unit 112 to be described later at a rear end thereof. The unit 113 is configured. 11
Reference numeral 2 denotes a monitor unit, which is a monitor screen 112 m formed by a liquid crystal panel.
And a speaker 112s that outputs stereo sound as sound.

FIG. 4 is a block diagram showing the configuration of a conventional information reproducing apparatus. In FIG. 4, reference numeral 101 denotes a disk unit, which reads information recorded on the disk 100 by a light beam emitted from a pickup 101a, and outputs a read signal to a disk reading unit 101c, as is well known. A signal necessary for control of various error signals and the like generated by the disk reading unit 101c is used to control the pickup 1
01a and the spindle motor 101b. In this control, in order to control the relative position between the disk 100 and the beam spot with high precision, the spindle motor 101b is controlled to control the rotation of the disk, and the pickup 101
The focus control and the tracking control of a are performed and the traverse control is performed to drive and control the radial movement of the disk.

Reference numeral 102 denotes an ODC (optical disk controller), which decodes information of the disk read by the disk unit 101 in the form of an RF signal into the information demodulator 10.
2a inputs, demodulates, performs rotation control of an optical disk to be reproduced, and performs reproduction data processing. Based on the result of the reproduction data processing here, the read optical disk is a CD-DA
(Audio) or DVD-Video main CPU
(Described later), a series of CD signal processing (CLV for CD)
(Constant rotation linear velocity) control signal generation, etc.) or DVD signal processing (jitter measurement, DVD CLV control signal generation, etc.). Further, it performs transfer processing such as demodulation of a DVD modulation signal, error correction processing, accumulation in a buffer in preparation for a transfer request from the subsequent stage, and the like.

Reference numeral 103 denotes an AV demodulation unit, which inputs information subjected to DVD reproduction processing from the ODC 102, deciphers information scrambled for copyright protection, demodulates the information into video and audio signals, and outputs the signals. That is, the descrambling is performed by a descrambling device (hereinafter, abbreviated as a descrambling device) 103a, and the stream of the de-scrambled compressed data is analyzed by the video demodulator 103b at the next stage to separate it into a main video and a sub video, Color-encode and D / A convert the bit streams of main video and sub video, and in some cases NTSC
The video signal is output from the AV external output unit 103d according to the scanning method of PAL or PAL. The audio data subjected to the stream analysis is input to the audio demodulator 103c. The audio demodulator 103c decodes the audio information, converts the audio information into an analog signal by D / A conversion, and outputs the analog signal from the AV external output device 103d. At the time of reproduction of an optical disk on which a high acoustic signal is recorded, an audio stream is directly output from the audio demodulator 103c via the AV external output device 103d (for example, Dolby AC-3 (Dolby Laboratories Lic).
trademark, etc.).

Reference numeral 104 denotes an AV output unit, and an AV demodulation unit 103
Video and audio signals are output from a video output unit 104b having a liquid crystal (LCD) monitor and an audio output unit 104c having a speaker (including a headphone output). That is, the video signal output from the video demodulator 103b is shaped into a waveform by the video output device 104b so as to be output to the liquid crystal monitor, and further illuminated from behind the liquid crystal monitor by the backlight 104a, so that a brighter and clearer image is output. Is done. The audio signal is input to the audio output device 104c, amplified by an amplifier as is well known, and output as sound from a speaker.

Reference numeral 105 denotes a control unit for controlling the entire apparatus, which function is executed by the entire apparatus in response to a user's operation, and how high-precision control is performed to maintain high performance in execution. It instructs and controls each section and informs the user of its state and the like. More specifically, the front CPU (F-CPU) 105b detects a switch operation of a switch / display (hereinafter abbreviated as SW & FL) 105c, and reports this to the main CPU (M-CPU) 105a by a serial signal. The M-CPU 105a determines what functions and operations are to be executed based on the firmware (programs for processing procedures for realizing the functions and operations) stored in a ROM (not shown) based on the respective components. (In FIG. 4, in order to avoid complication, M-C
Control signal lines from the PU 105a to each unit are not shown). Further, the contents to be notified to the user are notified from the M-CPU 105a via the F-CPU 105b by the SW & FL 105c (display by a light emitting diode, a fluorescent display tube, a small liquid crystal display, etc., generation of a warning sound by an electronic alarm, etc.). .
Further, the SW & FL 105c also has a remote control light receiving section, receives an infrared (IR) remote control signal, and transmits the information to the F-CPU 1 so that the apparatus can be remotely controlled.
05b. The F-CPU 105b decodes the remote control information into an operation command and reports it to the M-CPU 105a by a serial signal, whereby the same processing as the operation by the SW & FL 105c is performed.

Reference numeral 106 denotes a power supply control unit which converts a battery, an external power supply (a power supply input from the outside such as a home power supply or an automobile cigarette plug by means of a so-called adapter) or the like into a voltage suitable for each unit in the apparatus and supplies the same. In the power supply, based on the control from the M-CPU 105a, it is possible to supply or stop the power to a specific portion (power management). Power supply lines to the power supply lines other than those that are power-managed are not shown).

The operation of the conventional information reproducing apparatus configured as described above will be described below.

As is well known, when a user places an optical disk on a spindle (not shown), closes a disk cover 111l and loads a disk, the main CPU 105a
Controls the disk unit 101 according to the firmware to control a part of the information of the optical disk (index of recorded information, so-called T
OC information), the type of the loaded optical disc is changed to a normal CD-DA (Audi
o), Video-CD, DVD-Video, or something else (CD-G (graphic), etc.)
Or to detect. Next, by the user's "Play" operation,
The reproducing operation is started according to the type of the optical disk. That is, in the case of a DVD, the R
The F signal is demodulated by the ODC 102 and the AV demodulation unit 1
After being descrambled in 03 and converted into video / audio analog signals, the AV output unit 104 outputs video from an LCD monitor and outputs audio from a speaker. Also,
Similarly, in the case of a CD, the reproduced audio signal is output from the speaker of the AV output unit 104.

In this case, as shown in FIG.
May be rotated by the rotation holding unit 113 and may cover the upper surface 111U of the apparatus main body 111. At this time, the rotation angle is detected, and the main CPU 105 sends the power control unit 10.
6, a power supply to the backlight 104a is stopped when the monitor screen cannot be seen due to the rotation angle, thereby suppressing power consumption. Further, when the sound is completely covered, there is also a case where the sound output of the speaker is stopped and the power supply to the sound output unit 104c is also stopped.

Further, when the optical disk is not mounted on the spindle, there is also a disk unit 101 which is power managed and is not supplied with power. In this case, when the power is turned on by the user and the apparatus is driven, after confirming that the disk cover is closed, the laser is irradiated from the pickup 101a and the state of reflection (of course, usually, Without an optical disk, the amount of laser scattering and returning to the pickup is extremely small compared to the case with an optical disk) or by rotating a spindle motor and the degree of rotation (similarly, the so-called no-load current with no optical disk mounted is Detecting the presence or absence of an optical disk from a rotating current that is extremely smaller than the rotating current in a certain state, or a load and an inertia moment are small in a state where the optical disk is not mounted, so the rotating speed is faster or the rising change of the rotating speed is sharper than a certain state) When the power is turned on, it can be detected whether or not the optical disk is already loaded. Capable of detecting the presence or absence of the optical disc by performing Do treatment (before, the load of the laser reflected or spindle motor).

[0015]

However, recently, C
Optical disks represented by D and DVD are CD-DA (A
Various developments have been proposed to read and reproduce not only video and audio such as audio and DVD-Video but also data information, and CD-ROMs and DVD-ROMs on which application programs and the like are recorded have been widely used. In the conventional configuration described above, the CD-DA (Audi
o) Insufficient power saving when driving optical discs other than DVD-Video or DVD-Video, which consumes a large amount of power. There was a problem that it disappeared. In recent years, note-type personal computers have become very popular, and requirements for power management of an information reproducing apparatus as auxiliary storage have become extremely strict.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an information reproducing apparatus which manages a power supply appropriately according to the type of an optical disc to be reproduced and saves power. .

It is another object of the present invention to provide an information reproducing apparatus which manages a power supply according to a destination of reproduction information and is connected to the information reproducing apparatus and which saves power.

[0018]

In order to achieve the above object, an information reproducing apparatus according to the present invention receives an operation command of an operation notifying means or an operation command based on external information inputted through the information transmitting / receiving means. Control means for receiving and controlling the entire apparatus, and power supply means for supplying power to each means of the entire apparatus, wherein the control means reads and outputs a data processing result output from the medium data processing means. In accordance with the content of the digital signal, the power supply of the power supply means is individually stopped and controlled for each means of the apparatus.

With this configuration, the control means controls the power supply means to supply power only to a necessary portion by the information of the recording medium or by detecting acceptance of the information from the destination, and according to the type of the information. As a result, it is possible to obtain an information reproducing apparatus capable of minimizing unnecessary power consumption and saving power.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a medium reading means for reading a digital signal from a recording medium on which video / audio information and / or data information is recorded as a digital signal; A medium data processing unit for performing data processing on the output, an information transmitting / receiving unit for receiving an operation from a user while receiving information from outside while performing waveform shaping on the output of the medium data processing unit and outputting the output to the outside of the apparatus; Operation notifying means for notifying a state, control means for receiving an operation command of the operation notifying means or receiving an operation command based on external information input through the information transmitting / receiving means, and controlling the entire apparatus; Means for supplying power to the means, and the control means inputs and reads a data processing result output from the medium data processing means. In accordance with the content of the digital signal of the medium, the power supply of the power supply means is controlled to be independently stopped for each means, and the video / audio information and the data information are read out and output to the outside of the apparatus. In addition, the control means controls the power supply means to supply power only to a necessary portion of each means in the apparatus based on information from the outside, so that the power supply is appropriately controlled according to the contents of the recording medium. Having.

According to a second aspect of the present invention, there is provided a video / audio demodulation means for demodulating an output of a medium data processing means to output a video signal and an audio signal, and a video / audio signal output from the video / audio demodulation means. And a video / audio output unit for processing and outputting video and audio, wherein the control unit receives a data processing result output from the media data processing unit and inputs and reads the data processing result according to the content of the digital signal of the recording medium. It is characterized in that the power supply of the means is controlled to be independently stopped for each means, and even if the recording medium includes video and audio, the video / audio reproduction / demodulation means, the video / audio output means and Accordingly, the video and audio can be demodulated and reproduced, and the power supply can be appropriately controlled according to the contents of the recording medium.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram of an information reproducing apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a disk unit, similar to the prior art, for rotating and driving a disk.
Servo control is performed on the linear drive of the pickup to irradiate the light beam with high accuracy, and the information of the disk is output as an RF signal. 2 is ODC (optical disk controller)
As in the case of the conventional technology, information of the disk read from the disk unit 1 is input in the form of an RF signal, and data processing for rotation control, reproduction data processing, and the like of the optical disk to be reproduced are performed. In response to the reproduction data processing result, the main C
PU (to be described later) reads CD or DVD
Alternatively, it is determined whether the signal has a video / audio signal or data information. The difference from the conventional one is that an interface (I / F) provided for transmitting and receiving, as a data signal, the reproduction information of the disc on which the CD signal processing and the DVD signal processing have been performed by the information demodulator 2a to the outside of the information reproducing apparatus. ) Send to CPU 2b. The I / FCPU 2b is
Main CPU of the control unit 5 that controls the entire device
(M-CPU) Connected to 5a serially, M-CPU
In response to the command of 5a, the reproduction information of the disc is transmitted to a computer or the like connected via a USB or a serial data bus or a parallel data bus which is a bus line with the outside of the apparatus.

Reference numeral 3 denotes an AV demodulation unit, like the conventional one,
The DVD-reproduced information is input from the ODC 2, the crumble for copyright protection is released, demodulated into video and audio signals, and output. Reference numeral 4 denotes an AV output unit, which outputs a video signal and an audio signal from the AV demodulation unit 3 by using a liquid crystal (LCD) monitor and a speaker (including a headphone output) in the same manner as in the prior art.

Reference numeral 6 denotes a power supply control unit for supplying power to the entire apparatus by using a battery as a main power source. In response to a control command from the M-CPU 5a of the control unit 5, a power supply for the backlight 4a similar to the conventional one is provided. Control of power supply to the entire AV output unit 4 and control of power supply to the entire AV demodulation unit 3 (similarly to FIG. 4 of the related art, FIG. For the sake of simplicity, only the power supply lines to the AV demodulation unit 3, the AV output unit 4, and the backlight 4a in the AV demodulation unit 3 and the AV output unit 4 for controlling the power supply are shown. There).

The operation of the information reproducing apparatus configured as described above will be described with reference to FIG. First, when reproducing a DVD-Video disc or a so-called CD disc on which music is recorded as an optical disc, a user operates a switch as in SW & F as in a conventional information reproducing apparatus.
The L5c detects the signal, the disk unit 1 detects the information on the disk under the control of the control unit 5, the ODC 2 demodulates, the AV demodulation unit 3 decodes and A / D converts the analog video / audio signal. To The audio / video signal is visualized by the AV output unit 4 by the video output unit 4b and is displayed on a monitor screen (not shown), and the audio output unit 4c outputs sound to a speaker or the like. At this time, the backlight 4a is turned on, and the monitor screen of the video output unit 4b is brightly described.

In this case, in the information reproducing apparatus as shown in FIG. 3, when the monitor section 112 covers the apparatus main body 111 and the monitor screen 112m becomes invisible similarly to the related art, the position of the monitor section 112 is detected. In response to the detection signal, the control unit 5 sends a control signal to the power supply control unit 6 to stop the power supply of the backlight 4a and to control the backlight 4a.
Turn off the light. In addition, the control unit 5 measures the accumulated time when the monitor unit 112 covers the apparatus main body 111, and when the accumulated time exceeds a preset time, the control unit 5 sends a control signal to the power control unit 6. And the power supply to the entire AV output unit 4 is stopped. When the monitor unit 112 is opened again and the monitor screen 112m is displayed, the control unit 5 detects this and issues a command to supply power again. At this time, the AV output unit 4
Monitor screen 112m after receiving power supply and starting driving
After a few seconds, when the image is stabilized, power is also supplied to the backlight 4a, so that the monitor screen 112m is also drawn brightly.

Next, a case of reproducing a data disk such as a DVD-ROM or a CD-ROM will be described. In response to a command from the control unit 5 which has detected a user operation, or an external command input as a data signal,
The disk unit 1 reproduces the disk according to a command of the control unit 5 which has been detected by the / FCPU 2b and received the report as a serial signal, the ODC 2 demodulates the RF signal, and transmits data from the I / F CPU 2b.

In this case, the M-CPU of the control unit 5
5a is based on the result of processing the reproduced data from the ODC2,
The type of the disc currently being reproduced is known, and it is not the reproduction of video and audio information. Therefore, not only the power supply of the AV output unit 4 but also the power supply of the AV demodulation unit 3 to the power supply control unit 6 Command to stop also. Thus, A
The power supply to the V demodulation unit 3 and the AV output unit 4 is eliminated, and the consumption of the battery which is the power source is suppressed.

As described above, according to the present embodiment, based on the command from the control unit M-CPU, the power control unit controls not only the power supply of the backlight by detecting the rotation state of the monitor unit but also the information of the recording medium. AV demodulation unit, AV
Since the power supply to the output unit is also stopped, it is possible to further reduce power consumption.

(Embodiment 2) FIG. 2 is a block diagram showing the configuration of an information reproducing apparatus according to Embodiment 2 of the present invention. In FIG. 2, 1 is a disk I / F, 2 is an ODC (optical disk controller), 3 is an AV demodulation unit, 4 is an AV output unit, and the above are the same as those in FIG. 15 is a main CPU (M-CP) of the control unit.
In U), a control signal is sent to each component to control the entire apparatus. In particular, I / Os that send and receive data outside the device
The FCPU 2d and the front CPU (FC) of the operation unit 17
PU) 17b transmits a control signal by serial communication. The operation unit 17 is a switch / display (SW & F) that receives a user operation and informs the user of the state of the apparatus.
L) 17c and the aforementioned F-CPU 17 connected thereto
b, the F-CPU 17b recognizes the operation of the user, sends the content to the M-CPU 15 by serial transmission, and reports items to the user from the M-CPU 15 (operation state of the apparatus (stop, reproduction, etc.) ) And the setting state (sound reproduction of audio, reproduction of other languages, etc.)) and notify the user by display or the like.

Reference numeral 16 denotes a power supply control unit which supplies power not only to the backlight 4a, the AV output unit 4, the AV demodulation unit 3 but also to the operation unit 17 in response to a command from the M-CPU 15a (illustration of command signal lines is omitted). Controls power supply / stop.

The difference from the configuration of FIG. 1 is that the operation unit 17 is separated from the control unit (reference numeral 5 in FIG. 1), and the power supply control unit 16 also manages the power of the operation unit 17.

The operation of the information reproducing apparatus of the present embodiment configured as described above will be described below. As in the first embodiment, a disk (CD, Video-CD, DVD-Video) on which video and audio information is recorded
o, DVD-Audio, CD-graphics, etc.), the power supply control unit 6 supplies power to each unit, and the monitor screen is not displayed as described with reference to FIG. The power supply to the backlight 4a is stopped at the time, and the power supply to the AV output unit 4 is also stopped when the state continues for a predetermined time.

Next, a disc (DVD-ROM, CD-R) containing only data information without any video or audio information
In the case of reproducing (reading) such as OM, etc., the I / F of ODC2
The CPU 2d and a computer (external computer) outside the device are connected by a bus such as a USB or SCSI,
As a result, the information reproducing apparatus uses the external computer as a master and becomes an auxiliary storage device itself as a slave, and is normally driven by an operation command from the external computer. That is, a read command or the like from the external computer based on an operation system (OS) executed by the external computer is transmitted via the bus in the form of a data signal in the form of an I / FCP.
It is input to U2b, and the M-CPU 15 controls the entire apparatus based on the input.

In this case, the M-CPU 15 not only stops the power supply of the AV demodulation unit 3 but also controls the operation of the user, because the disk being reproduced (read) does not contain video / audio information. And notification is I / FCPU2
Since the operation is performed by the OS of the external computer via the bus b, the power supply to the operation unit 17 is also stopped.

As described above, the M-CPU 15 performs power management in accordance with the content of the recording medium to be reproduced, so that not only the AV demodulation unit 3 but also the power consumption of the operation unit 17 can be suppressed.

In the above description, the M-CPU 15 and the I / F CPU 2b have been described as being different from each other.
I / FCP in which CPU processes external data signals
The same applies to a configuration in which the function of U is fetched and data is directly input from the information demodulator 2a of the ODC 2.

As described above, according to the present embodiment, the M-CPU that is constantly driven and the operation section for operation and display are separated, so that an external operation command is received by the I / FCPU. In this case, the M-CPU can issue a command to the power control unit to stop the power supply to the operation unit.

(Embodiment 3) Next, power management when data is transmitted and received from an information reproducing apparatus to an external computer as a data signal will be described.

In recent years, decoders for demodulating MPEG signals have become cheaper and have become more popular. In particular, MPEG decoding by software is spreading rapidly because it is less expensive than hardware decoders. Generally soft MPE
Although the conversion speed of the G decoder is lower, the speed of the CPU of the personal computer as the external computer is increased,
The difference has been narrowed due to the increase in capacity accompanying the reduction in the price of memory elements.

Such an external computer and USB,
When data is transmitted and received via a bus such as SCSI, an optical disc being reproduced is a DVD-Video.
The power management in the case of recording video information compressed by MPEG, such as o, will be described below with reference to FIG.

In FIG. 2, the reproduction signal of the optical disk 100 is output from the disk unit 1 to the ODC 2 as an RF signal, and the demodulated signal is output to the AV demodulation unit 3 by the processing described in the first and second embodiments. At the same time I / FC
Demodulated data is supplied from the PU 2b to the external bus. In this case, the information reproducing apparatus transmits M data via the I / FCPU 2b.
Since the demodulated data is output to the data bus as a PEG signal, the external computer which is the master has its own MPE.
It is automatically checked whether the G signal can be decoded.
If PEG signal is not accepted, USB or SCSI
And the like, and outputs a warning to the external bus by a code according to the communication protocol. The I / FCPU 2b knows the warning and transmits the information to the M-CPU 15, and the M-CPU
Reference numeral 15 denotes normal power supply management, that is, continuous power supply to the AV demodulation unit 3, the operation unit 17, and the like (of course, as described above, the rotation of the monitor unit is detected to control the power supply management to the AV output unit. ).

Conversely, if there is information from the master external computer on the external bus indicating that the MPEG signal can be received, or if there is no warning that the MPEG signal cannot be received as described above, the I / FCPU 2b M-
The CPU 15 is notified to that effect, and the M-CPU 15
It is determined that decoding of the G signal is unnecessary, and
Power supply management is performed so that power supply to the demodulation unit 3 is stopped.

Even in such a case, if the AV external output unit 3d needs to output to an external monitor, a VTR, or the like,
Alternatively, when the monitor unit is opened and the AV output unit is driven, the M-CPU 15 can control so as not to stop the power supply. That is, in the former case, an RCA pin jack or a so-called S terminal, which is an output terminal of the AV external output device 3d, is provided with a connection detection switch (a switch that mechanically closes (or opens) an electrical contact by terminal insertion as is well known). ), So that M-C
The PU 15 can detect the state. Needless to say, the latter case can be detected by the monitor rotation angle sensor as described above. Of course, by operating the operation unit 17,
Alternatively, it is needless to say that the power supply to the AV decoder can be set by an instruction from an external computer.

As described above, according to the present embodiment, the I / F
The CPU detects whether information can be received from the outside or not,
Based on this, the power supply to the AV output unit and the AV demodulation unit can be stopped, so that power consumption can be further reduced.

(Explanation of Development of Embodiment) In the above-described embodiment, an external monitor, an external monitor,
When output to a VTR or the like is required, control can be performed so that the M-CPU does not stop power supply regardless of the rotation state of the monitor unit. That is, the RCA pin jack or the so-called S terminal, which is the output terminal of the AV external output device, is provided with a connection detection switch (a switch having a mechanically closed (or opened) electrical contact by terminal insertion as is well known). Thus, the M-CPU can detect the state.

When it is desired to output only either video or audio to the outside, it is possible to supply power only to each component related to the one connected to the AV external output terminal. For example, in the case of audio, DVD-Audio or super audio CD having high Hi-fi characteristics
In the case of a recording medium that emphasizes audio information such as (SACD), only audio-related outputs are output to an AV external output device (as is well known, stereo audio (left L, right R), rear (surround)
M-CPU detects that any one of the left and right audio, the center audio, the low-frequency audio, and the digital audio of the PCM / bit stream is connected and supplied externally.
Power supply to the video demodulator, video output device, and backlight can be stopped.

Of course, the same applies to the case of video, and only the output related to video (such as video output, S terminal output, video signal color difference output, etc. ) Is connected and not connected to the above-mentioned audio-related output, the M-CPU can detect the connection state and stop the power supply to the audio demodulator and the audio output device.

These are not only automatically controlled by the M-CPU upon detecting the connection to the AV external output device, but also released, and the operation setting of the user's SW & FL or the setting by an external data signal is performed. M-
It goes without saying that the firmware of the CPU or the I / FCPU can be configured.

Further, in the above-described embodiment, an example has been described in which the power supply control unit serving as the power supply unit supplies or stops power to each unit according to a command from the M-CPU serving as the control unit. By the way, each unit is provided with a so-called enable function, such as some microcomputers, which is capable of reducing the power consumption by suspending the operation while receiving the power supply and reducing the power consumption or performing the normal operation. The same effect can be obtained by reducing the power consumption of the block by issuing a command from the M-CPU to suspend the block instead of stopping the power supply. It is also possible to combine this enable function and power supply. If the M-CPU specifies a block that does not need to be driven as in the above-described embodiment, the M-CPU first puts the block into a sleep state by the enable function. And the M-CPU starts counting the time of the sleep state. When the counted pause time exceeds a preset time (for example, 5 minutes), a command is issued to the power control unit to stop the power supply to the block. When the block has to be driven in the power supply stop state, the M-CPU first issues a command to the power supply control unit to start power supply to the block, and then the M-CPU sets the power supply to the block for the next set time (power supply becomes stable). Time, for example, 2
After about 3 seconds), a command is issued to release the sleep state of the block, and the block is restarted. Of course, if the M-CPU issues a command to restart the block within the pause time, the drive state is immediately set (for example, about 100 msec), and the drive can be started earlier than in the pause state due to the stop of power supply. Although the power saving capability is inferior to that of the embodiment, there is an effect that the access time of the information reproducing apparatus can be shortened.

In the above description, the power source itself of the power supply control unit, which is the power supply means, has been described by exemplifying a battery or the like, but is not necessarily limited to this. For example, recently
There are also specifications (USB or the like) that receive power supply together with a serial signal from an external computer outside the apparatus, and a configuration in which power is supplied from an external computer may be used.
In this case, the information reproducing apparatus may also be provided with a secondary battery, and when the apparatus itself is in a stopped state, the control means may control the power supply means to charge the secondary battery.

Further, in all of the first to third embodiments, the information reproducing apparatus in which the recording medium is an optical disk such as a DVD or a CD has been exemplified. However, the present invention is not limited to this. , Mini disk (M
D), an information reproducing apparatus for an optical disk such as a super audio CD (SACD), a magnetic recording medium using a magnetic tape as a recording / reproducing medium, and a hard disk as a recording / reproducing medium; Even if the recording medium is used as the recording medium, the same effect can be obtained by the similar configuration.

Further, in all of the above-described embodiments, the information reproducing apparatus which performs only reproduction from a recording medium has been described. However, the present invention is not limited as long as it can reproduce at least. The recording medium may also be capable of reproducing, and it goes without saying that the recording medium to be applied is appropriately selected and used, for example, a disk medium or a tape medium housed in a cartridge or a cassette as needed.

In all of the above-described first to third embodiments, if the format of the recording medium and the control rules allow,
The control means includes a procedure for enabling the video / audio demodulation means and the video / audio output means to reduce the power consumption in the control information of the video and audio information contained in the medium among the contents of the read digital signal of the recording medium. If it is set by the control information of the video and audio information, it detects this and controls the power supply means to supply power to the video and audio demodulation means and the video and audio output means with the least power consumption according to the control information. It is also possible.

[0056]

As described above, according to the present invention, the power supply means is controlled to supply power only to a necessary portion by the information of the recording medium or by detecting acceptance of the information from the destination, and The power supply management can be appropriately performed according to the type of the power supply, so that an excellent effect that unnecessary power consumption can be minimized and power saving can be achieved can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an information reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an information reproducing apparatus according to a second embodiment of the present invention.

FIG. 3 is a configuration perspective view of an information reproducing apparatus.

FIG. 4 is a configuration block diagram of a conventional information reproducing apparatus.

[Explanation of symbols]

 Reference Signs List 1 disc unit 2 ODC (optical disc controller) 3 AV demodulation unit 4 AV output unit 4a backlight 4b video output unit 4c audio output unit 5 control unit 5a, 15 main CPU 5b, 17b front CPU 5c, 17c SW & FL 6 power control unit 17 operation unit 100 optical disk 111 device main body 111l disk cover 112 monitor unit 113 rotation support unit

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshihiro Fujimoto 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5C052 AA02 AB04 BB02 BB06 CC06 CC11 DD04 DD10 EE02 EE03 5C059 KK49 MA00 SS11 SS26 TA00 TB00 TC00 TD00 UA05

Claims (9)

[Claims] A medium reading means for reading the digital signal from a recording medium on which video / audio information and / or data information is recorded as a digital signal; a medium data processing means for performing data processing on an output of the medium reading means; An information transmitting / receiving means for receiving the information from the user while outputting the waveform of the output of the medium data processing means to the outside of the apparatus, receiving an operation from the user, and reporting the state of the entire apparatus; A control unit that receives an operation command of the notification unit or receives an operation command based on external information input through the information transmission / reception unit and controls the entire apparatus, and a power supply unit that supplies power to the respective units of the entire apparatus. An information reproducing apparatus comprising: a controller configured to input a data processing result output from the medium data processing unit. An information reproducing apparatus, wherein the power supply of the power supply means is controlled to stop independently for each of the means of the apparatus in accordance with the content of the digital signal read from the recording medium. 2. A medium reading means for reading a digital signal from a recording medium on which video / audio information and / or data information is recorded as a digital signal; a medium data processing means for performing data processing on an output of the medium reading means; Video and audio demodulation means for demodulating the output of the medium data processing means to output video and audio signals, and video and audio output for processing the video and audio signals output by the video and audio demodulation means and outputting video and audio signals Means, an information transmitting / receiving means for waveform-shaping the output of the medium data processing means and outputting the information to the outside of the apparatus, and receiving information from outside, and an operation notifying means for receiving a user operation and notifying the state of the entire apparatus. And an operation based on external information input through the information transmitting / receiving means or receiving an operation command of the operation notifying means. An information reproducing apparatus, comprising: a control unit that receives a command and controls the entire apparatus, and a power supply unit that supplies power to the respective units of the entire apparatus, wherein the control unit includes a data output from the medium data processing unit. An information reproducing apparatus characterized in that power supply of said power supply means is independently stopped and controlled for each of said means of said apparatus in accordance with the content of a digital signal of a recording medium to which a processing result has been input and read. 3. The control means controls the power supply means to stop supplying power to the video / audio demodulation means and the video / audio output means if the digital signal content of the read recording medium is not video / audio information. 3. The method according to claim 2, wherein
The information reproducing apparatus according to the above. 4. The control means controls the power supply means to stop supplying power to the operation notifying means if the content of the digital signal read from the recording medium is not video / audio information. Item 3. The information reproducing apparatus according to item 1 or 2. 5. The control means, even if the content of the digital signal read from the recording medium is video / audio information, the video / audio demodulation means and the video / audio demodulation means based on external information obtained via the information transmission / reception means. 3. The information reproducing apparatus according to claim 2, wherein the power supply unit is controlled so as to stop supplying power to the output unit. 6. The control means supplies power to the operation notifying means based on external information obtained through the information transmitting / receiving means, even if the content of the read digital signal of the recording medium is video / audio information. 3. The information reproducing apparatus according to claim 1, wherein the power supply unit is controlled to stop the operation. 7. A video / audio demodulation means for demodulating the output of the medium data processing means and outputting a video signal, and an audio demodulation means for demodulating the output of the medium data processing means and outputting an audio signal. 3. The information reproducing apparatus according to claim 2, wherein the control means controls a power supply means as the video / audio demodulation means so as to stop supplying power only to the video demodulation means or only to the audio demodulation means. 8. When there are a plurality of video / audio demodulating means and video / audio outputting means, each of which can be selected, and when the power consumption suppression is set in advance by the operation notifying means, the control means uses the least power consumption. 3. The information reproducing apparatus according to claim 2, wherein a power supply unit is controlled to select the video / audio demodulation unit and the video / audio output unit and supply power. 9. When a plurality of video / audio demodulation means and video / audio output means are respectively selectable, the control means selects the video / audio demodulation means and the video / audio output means which consume the least power. 3. The information reproducing apparatus according to claim 2, wherein the power supply means is controlled to supply power.