JP2000207814A - Electronic device and system starting method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the power consumption and also to shorten the waiting time of user by improving the starting operation in an electronic device such as a DVD(digital video disk)-ROM reproduction device, etc. SOLUTION: This electronic device is provided with a sub-microcomputer 121 for executing a prescribed function specified by the input such as a panel key 123, etc., in the standby state when the power is supplied to only an auxiliary part 102 and for informing a main body part 101 of the input to the auxiliary part 102 in the starting state when the power is supplied to the main body part 101, and a CPU 111 for executing the prescribed function by judging the input state based on the information by the sub-microcomputer 121 to the main body part 101 from the auxiliary part 102.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus such as a video disk player and a DVD-ROM reproducing apparatus and a method for starting up the system.

[0002]

2. Description of the Related Art Conventionally, in personal computer application products, a large amount of basic software is required due to high performance and multiple functions, and a considerable time is required from power-on to use by a user. This time includes hardware initialization processing and operation diagnosis processing.

[0003] In a personal computer, basic software including initialization processing and operation diagnosis is executed at power-on of the main body by a power key, and is always controlled by the main body CPU.

On the other hand, in recent years, even home electric appliances such as a video disk player and a DVD (Digital Video Disc) reproducing apparatus have become basic software including initialization processing and operation diagnosis at the time when the main body is turned on by connecting an outlet. The software is executed and always operates under the control of the CPU of the main body, and almost the same operation as a personal computer has come to be performed.

In a personal computer,
It is not surprising that it takes time for the OS to boot, but home appliances are not as well understood by users as personal computers, and it is required that the system boot time before functions can be used is shortened. ing.

For this reason, a suspend (sleep) process, which is a technique often used in personal computers, is sometimes performed. This suspend (sleep)
The processing is a technique for maintaining the state of the memory while the system is running when the power is turned off. There is also a hibernation process in which the operation state of the system is stored in the external storage device as it is, and the main storage device is returned to the operation state when the power is turned on.

In the suspend state of a personal computer, since the power of the main body is always turned on, it is possible to execute a predetermined function after returning from the suspend state to a normal state by key input or interruption. I have. For example, tray opening for opening a tray of a CD-ROM drive, reproduction of CD audio, mail processing by modem reception, automatic download by a timer, and the like.

[0008]

However, when considering a home electric appliance based on the inside of a personal computer, if a long time is required from the power-off state of the main body to the use after start-up, the user is not at fault. There was a problem that you might doubt.

Even when the above-described power control is performed, power is always consumed even in a power saving state such as a suspend process. However, there were problems with performance and power consumption.

Further, the state of each device needs to be managed by basic software, and the control of the operation state of the system tends to be complicated. In a home electric appliance such as a DVD reproducing apparatus, the control is complicated like a personal computer. Control cannot be performed.

Further, there is a problem that the system configuration is restricted, for example, a device used in the apparatus needs to have a power saving mode.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an electronic apparatus capable of improving a starting operation, reducing power consumption, and reducing a user's waiting time, and a system starting method thereof. It is intended to provide.

[0013]

In order to achieve the above object, an electronic apparatus according to the first aspect of the present invention is activated by power supply from a power supply section and performs initialization processing of each section of the apparatus including itself. In an electronic device having a main control unit that executes and controls each unit of the device, an interface unit with a user including a power switch, a switch for function operation and a display panel, and power supplied from the power supply unit, the interface unit And a sub-control unit that controls the power supply unit to supply power to the main control unit in response to a user operation on the interface unit.

According to a second aspect of the present invention, in the electronic device according to the first aspect, the main control section performs an initializing process for controlling each section of the apparatus by first supplying power from the power supply section. First activation processing means for executing accompanying detailed diagnostic processing and operating each of the device sections under its own control, and a standby operation of the interface section during the operation of each of the device sections by the first activation processing means, or When a non-operation state for a predetermined time or more occurs, means for controlling power to a minimum power use state capable of maintaining an operable state of each unit of the device, and in the power use state, the interface unit includes: And a second activation processing means for operating each unit of the device by a simple diagnosis process that does not involve the initialization process when the standby release operation is performed. That.

According to a third aspect of the present invention, in the electronic device according to the first aspect, the sub control unit controls the power supply unit and a predetermined time elapses after power is supplied to the main control unit. Even when the main control unit does not request communication to the sub-control unit, means for displaying an error occurrence on the display panel of the interface unit is provided.

According to a fourth aspect of the present invention, in the electronic device according to the first aspect, the sub control unit controls the power supply unit and supplies power to the main control unit within a predetermined time. Means for notifying information of a power-on factor to the main control unit when a communication request is received from the main control unit, wherein the main control unit includes a power-on factor notified by the sub-control unit. Means for determining an operation state of each unit of the device based on the information and taking over control of each unit of the device from the sub-control unit.

According to the first and fifth aspects of the present invention, when the user operates the interface unit in a standby state in which the user interface unit including the sub-control unit is energized, the interface unit is operated according to the operation contents of the interface unit. In addition to control, the power supply unit is controlled so as to supply power to the main control unit. Therefore, when power is supplied only to the sub control unit, the power supply to the main control unit, that is, the device main unit side, is completely stopped. Can be stopped at
The power consumption of the entire system can be reduced without performing complicated management with basic software and various devices. Also, the interface unit is controlled by the sub-control unit during a period from when power is supplied to the main control unit from the standby state to when the main control unit executes detailed diagnostic processing and starts up normally. Operates, so that the user can immediately perform the next operation after operating the interface unit.

Further, the power consumption of the entire system can be suppressed without performing complicated management with basic software and various devices.

Further, when the interface section is operated, the sub-control section controls the power supply section to supply power to the main control section and controls necessary interface sections, so that the main control section is activated. The waiting time of the user between the two can be reduced. In the invention according to claim 2,
The main control unit executes a detailed diagnosis process including an initialization process for controlling each unit of the device by the first power supply from the power unit, and operates each unit of the device under its own control. In addition, if a standby operation of the interface unit or a non-operation state for a predetermined time or more occurs while each unit of the device is operating,
The power is controlled to a minimum power use state that can maintain an operable state of each unit of the device. In this power usage state,
When a standby release operation is performed in the interface unit, each unit of the device is operated by a simple diagnosis process that does not involve an initialization process, so that it is possible to quickly start up from the standby state.

In this way, by making the first start-up process executed when the power is first turned on and the second start-up process executed when the power is turned on again different, the first power-on or the second turn-on is repeated. The startup time can be reduced by turning on the power.

According to the third aspect of the invention, if there is no communication request from the sub-control unit after a predetermined time has elapsed from the activation of the main control unit, the fact that an error has occurred is displayed on the display panel.
The user can accurately grasp the occurrence of an error in the main control unit.

According to the fourth aspect of the present invention, when a communication request is received from the main control unit within a predetermined time after power is supplied to the main control unit, the sub-control unit sends a power-on factor to the main control unit. The main control unit determines the operation state of each unit of the device based on the information of the power-on factor notified from the sub control unit and takes over the control of each unit from the sub control unit. The control can be switched from the control to the main control unit without any trouble.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a personal computer application device, for example, a DVD-ROM playback device according to one embodiment of an electronic device according to the present invention.

As shown in FIG.
The ROM playback device includes a main unit 101, an auxiliary unit 102, a power supply unit 103, a ROM-DRIVE 104, a display device 10;
Five. Further, the main body unit 101 includes a CPU 111 as a main control unit, a main storage device 112, a startup time determination device 113, a startup factor determination device 114, a startup count determination device 115, an initial diagnosis device 116, a communication device 117, and an input control device 118. , Initialization device 119, ROM-DRIV
An E control device 120 and an output control device 121 are provided.
The auxiliary unit 102 includes a sub microcomputer (hereinafter abbreviated as a sub microcomputer) 121 as a sub control unit, a timer 12
2, a panel key 123, a remote controller (hereinafter abbreviated as a remote controller) 124, and a panel LED 125.

The CPU 111 controls each part of the main body 101 based on a predetermined control program. The predetermined control program causes the initial diagnosis device 116 to execute a detailed diagnosis process including an initialization process for controlling each unit of the device by the initial power supply from the power supply unit 103 and operate each unit of the device under its own control. When the standby operation of the auxiliary unit 102 or the non-operation state for a predetermined time or more occurs while each unit of the device is operating by the first start process and the first start process,
A process of controlling power to a minimum power use state in which each unit of the device can be maintained in an operable state, that is, a process of controlling power to a standby state, and an initial state when a standby release operation is performed by the auxiliary unit 102 in the standby state. A second startup process for operating each unit of the device is performed by causing the initial diagnosis device 116 to execute a simple diagnosis process without a conversion process. The main storage device 112 executes a program and stores the result. The start-up time determination device 113 determines whether or not the CPU 111 of the main unit 101 has been able to normally communicate with the sub-microcomputer 121 within a predetermined time based on information obtained by communication with the auxiliary unit 102, that is, the CPU 111 It is determined whether a communication request has been issued within the time and a response has been returned from the sub-microcomputer 121. The activation factor determination device 114 determines what is the power-on factor, that is, what is the factor that activated the main unit 101, from the information obtained by communication with the sub-microcomputer 121 of the auxiliary unit 102. The activation number determination device 115 includes the auxiliary unit 102
It is determined whether or not the power is turned on for the first time after energization, that is, whether or not the activation is the first activation after energization by the outlet, based on the information obtained in the communication with. Initial diagnostic device 116
Is for performing an operation test of various hardware of the main unit 101, and diagnoses whether the main unit 101 operates normally.

The communication device 117 is a CPU of the main body 101.
A power-on factor and key data are communicated between 111 and the sub-microcomputer 121 of the auxiliary unit 102. The input control device 118 processes a key input interrupt from the sub-microcomputer 121. The initialization device 119 initializes various types of hardware of the main unit 101. The ROM-DRIVE control device 120 sends the ROM-DRIVE1
It instructs opening and closing of the tray 04, taking out data from the ROM disk, and the like. The output control device 121 controls video output to the external display device 105, for example, a monitor or a liquid crystal display.

The sub-microcomputer 121 has a panel key 12
3. Control the input by the remote controller 124 and the output of the display data to the panel LED 125, and turn on the power of the main unit 101.
/ OFF, controls the opening and closing of the tray of the ROM-DRIVE 104. The timer 122 measures and manages a startup time after the main unit 101 is energized. Panel key 123
Is an input device including a power key, a play key, a fast forward key, a fast rewind key, and the like. The remote control 124 is used when the user performs a remote control operation. The panel LED 125 is a liquid crystal display panel that displays a track, time, an error, and the like. Panel key 123, remote controller 124, panel LED 12 of auxiliary unit 102
5. The tray of the ROM-DRIVE 104 is an interface with the user.

The power supply unit 103 supplies power to the sub-microcomputer 121 of the auxiliary unit 102 when power is supplied to its own outlet, and supplies power to the main unit 101 under control (instruction) from the sub-microcomputer 121. ROM-DRIVE
104 is a ROM such as a DVD-ROM or a CD-ROM
It is a drive device for driving a disk, and includes various keys such as a tray opening / closing key (hereinafter referred to as a tray key) for instructing opening / closing of a tray and a power key. Under the control of the ROM-DRIVE control device 120, data is taken out from the ROM disk and reproduced. The display device 105 is an external display device, such as a monitor, connected to the main unit 101 by a pin code or the like, and displays a video signal output under the control of the output control device 121 on a display screen.

In the case of this DVD-ROM reproducing apparatus, key input control by a panel key 123 and a panel LED 125
Output control of display signal to the
A sub-microcomputer 121 for performing OFF control and tray opening / closing control of the ROM-DRIVE 104; and a communication device 117 for communicating key inputs and various information between the sub-microcomputer 121 and the CPU 111 of the main body 101.
A flag for controlling which of the sub-microcomputer 121 and the main unit 101 processes the key input is set in the sub-microcomputer 1
In the standby state in which power is not supplied to the main unit 101 and the CPU 111 of the main unit 101 cannot process information, the auxiliary unit 102 is set in the storage area inside the main unit 101.
The sub-microcomputer 121 controls the key input and display, and the sub-microcomputer 121 controls the power supply unit 113 to supply power to the CPU 111 of the main body unit 101 during the hardware-related operation of the auxiliary unit 102 by this control. The power supply unit 113 supplies power to the CPU 111 so that the CPU 11
Start 1 The activated CPU 111 is the sub-microcomputer 1
The sub microcomputer 121 communicates with the CPU 21 to communicate with the CPU 11.
1, and thereafter, the CPU 111 executes hardware control and display processing according to the key input.

Further, the above-described configuration includes an initialization device 119 for initializing the main body 101, an initial diagnosis device 116 for diagnosing that the main body 101 operates normally, and a power supply for starting the main body 101. By providing the activation factor determination device 114 for determining what is the factor, the initial diagnosis content is changed according to the power-on factor.

In addition, in the above configuration, an initialization device 119 for initializing the main body 101, an initial diagnosis device 116 for diagnosing that the main body 101 operates normally, and By providing a flag indicating whether or not there is a power supply, and a start-up number determination device 115 for determining whether or not the start-up is the first start-up after the power is supplied by the outlet, the contents of the initial start-up and the initial diagnosis after the second start are changed I do.

In addition, the above-described configuration includes a timer 122 for managing the time after the main unit 101 is energized, and a start-up time determining device 11 for determining whether the start-up time is within a predetermined time.
3 and a panel LED 125 for displaying a startup error, the sub-microcomputer 121 displays an error on the panel LED 125 when a startup error of the main body 101 occurs.

Hereinafter, the operation of the DVD-ROM reproducing apparatus of this embodiment will be described with reference to the flowcharts of FIGS. FIG. 2 is a flowchart when the sub-microcomputer 121 of the auxiliary unit 102 is initialized by the energization and enters a standby state. When the outlet of the connection cord provided in the power supply unit 113 is connected to a commercial power supply of 100 V or the like, the power stepped down and stabilized by the power supply unit 113, for example, 5 V or irrespective of the state of the power switch of the panel key 123. 12V or the like is supplied to the sub-microcomputer 121 of the auxiliary unit 102.

Then, the sub-microcomputer 121 executes its own initialization processing (S201), and subsequently initializes various flags used for discriminating its own state, that is, a power supply flag, a startup flag, and a control flag. (S202).

After the initialization is completed, the sub-microcomputer 121 checks the presence or absence of a key input from the panel key 123 (S203).

Here, when there is a key input (S203)
(Y), the sub-microcomputer 121 saves the input key data (S204).

Subsequently, the sub-microcomputer 121 checks the control flag and determines which of the auxiliary unit 102 and the main unit 101 processes the key (S205).

For example, if the control flag is 2 (Y in S205), the sub-microcomputer 121 generates an interrupt and notifies the main unit 101 of the key input (S206).

If the control flag is 0 or 1, (S
In 205), the sub-microcomputer 121 performs a process according to the key input by itself.

In this case, the sub microcomputer 121 first
It is determined whether the key input is the power key (S207).

Here, when the power key is determined (S20)
7), the sub-microcomputer 121 performs a power key process in the auxiliary unit 102 (S208). This step S2
The detailed processing of 08 will be described with reference to the flowchart of FIG.

If the key input is not the power key (S
Next, the sub-microcomputer 121 determines whether the key input is the tray key of the ROM-DRIVE 104 (S209).

As a result of the determination, if it is determined that the key is a tray key, the sub-microcomputer 121 performs a tray key process (S210). The detailed processing in step S210 will be described with reference to the flowchart in FIG.

Other than the above, that is, if the key does not need to be processed during standby, the sub-microcomputer 121 returns to the key input check processing in step S203.

As a result of the key input check, if there is no key input (N of S211), the sub-microcomputer 121 checks the power flag to determine whether the system is in the standby state or the startup state (S211).

Here, if the power flag is not 1 (S2
11) N), the sub-microcomputer 121 performs the processing of S203,
That is, the process returns to standby key input waiting.

If the power flag is 1 (Y in S211), the sub-microcomputer 121 checks the control flag (S212). If the control flag is 1 (Y in S212), the system (the main unit 101) The CPU 111) determines that it is in the activated state, activates the timer, and checks the timeout of the timer 122.

Before the timer 122 times out, it is determined whether or not the CPU 111 has accessed the sub-microcomputer 121, that is, whether or not a communication request command has been received (S213).

The CPU 111 of the main body 101 within a predetermined time
When the timer 122 times out (Y in S213), the sub-microcomputer 121 displays an “error” on the panel LED 125 as a startup failure.

On the other hand, before the timer 122 times out, the CPU 111 of the main body 101
When the command is sent to the sub-computer 1 (Y in S215), the sub-microcomputer 121 performs a process according to each received command. The detailed processing in step S216 will be described with reference to the flowchart in FIG. FIG. 3 is a flowchart of a process performed by the sub-microcomputer 121 of the auxiliary unit 102 when the power key is pressed.

In this case, the sub-microcomputer 121 first
The power supply flag is checked to determine whether the system is in a standby state or a startup state (S301).

If the power flag is, for example, 0 (Y in S301), the power-on processing of the main body 101 is executed because the apparatus is in the standby state (S302).

The sub-microcomputer 121 is connected to the main unit 1
The power flag indicating that 01 is in the active state is changed from 0 (standby state) to 1 (active state) (S30)
3). After changing the power flag to 1, the sub microcomputer 121
Sets that the power key is on as a power-on factor (S304).

Then, the sub-microcomputer 121 sets the control flag to 1 (S304), and within a predetermined time,
A start timer is started to monitor whether or not is started (S306).

In the determination processing in S301, if the power flag is not 0 (N in S301), for example, 1 or the like, the sub-microcomputer 121 executes the power-off processing of the main body 101 (S307).

After the power-off processing, the sub-microcomputer 121
Power flag set to 0 (standby state), control flag set to 0
(Initial state) (S308).

FIG. 4 shows the sub-microcomputer 1 of the auxiliary unit 102 when the tray key of the ROM-DRIVE 104 is pressed.
21 is a flowchart of a process performed by the control unit 21. In this case, the sub-microcomputer 121 first determines whether the system is in a standby state or a startup state (S401).

As a result of this determination, if the power flag is 0 (standby state) (Y in S401), the sub microcomputer 121
Executes the same processing as S302 to S306 in FIG. 3, that is, the power-on processing of the main body 101 (S402 to S402).
S406).

The sub microcomputer 121 has a ROM-DRIV
The open / closed state of the tray in E104 is determined (S407).

If it is determined that the tray of the ROM-DRIVE 104 is closed (Y in S407), the sub-microcomputer 121 issues a command to open the tray (S408).

On the other hand, if the sub-microcomputer 121 determines that the tray of the ROM-DRIVE 104 is open,
Issue a command to close the tray (S40)
9).

FIG. 5 is a flowchart in which a command requested by the main unit 101 is processed by the sub-microcomputer 121 of the auxiliary unit 102. In this case, the sub microcomputer 121
First, it is determined whether or not the command requested by the main unit 101 is a start flag set (S50).
1).

Here, when the activation flag is set (S5
01, Y), the sub-microcomputer 121 sets the activation flag to 1
(Started: main unit 101 is started after power is supplied to sub-microcomputer 121 by outlet) (S50)
2).

Subsequently, the sub-microcomputer 121 determines whether the command is a control flag set (S503).

Here, when the control flag is set (S5
03, Y), the sub-microcomputer 121 sets the control flag to 2
(Mode for controlling key input by the main body 101) is set (S504).

It is determined whether the command is a key data acquisition request (S505).

Here, in the case of a key data acquisition request (S
The key input data is returned from the sub-microcomputer 121 to the main unit 101 (Y in 505) (S506).

The sub-microcomputer 121 determines whether the command is a power-on factor acquisition request (S507).

If the request is a power-on factor acquisition request (Y in S507), the sub-microcomputer 121
01 is returned (S508).

The sub-microcomputer 121 determines whether the command is a power-off request (S509).

If the request is a power-off request (Y in S509), the sub-microcomputer 121 performs power-off processing of the main unit 101 (S510).

After the power-off processing, the sub-microcomputer 121
Power flag set to 0 (standby state), control flag set to 0
(Mode for controlling key input by sub-microcomputer 121) is set (S511).

Here, the initialization operation (start-up operation) of the CPU 111 performed when the power of the main unit 101 is turned on will be described with reference to FIG. FIG. 6 is a flowchart of an initialization process performed when the power of the main unit 101 is turned on.

As shown in the figure, the CPU 111 performs processing (initialization processing) for initializing each device and various devices on the main body unit 101 side including itself (S601).

After the initialization process, the CPU 111 checks the state of the activation flag to determine whether or not the CPU 111 is the first activation (S602).

As a result of checking the activation flag, if the activation flag is not 1 (N in S602), the device initial diagnosis process of the main body 101 is performed in the detailed mode (S605).

On the other hand, when the activation flag is 1 (S602
(Y), the CPU 111 issues a communication request to the sub-microcomputer 121 of the auxiliary unit 102, and acquires information on a power-on factor from the sub-microcomputer 121 as a response (S603).

Upon receiving the response from the sub-microcomputer 121, the CPU 111 determines whether the power-on factor is the power key or the tray key of the ROM-DRIVE 104 (S604, S606).

In the case of either the power key or the tray key (Y in S604, Y in S606), the CPU 111 performs the initial diagnosis processing of the device of the main body 101 in the simple mode (simple initialization diagnosis processing) (S607). .

If neither the power key nor the tray key (S
The CPU 111 requests the sub-microcomputer 121 to set a start flag to indicate that the main body unit 101 has been started (N in 606), and initializes a key input process that should be normally performed when the system is started (S609). .

Finally, the CPU 111 requests the sub-microcomputer 121 to set a control flag in order to control key input in the main body 101 (S610).

Next, the operation of the CPU 111 when a key input occurs will be described with reference to FIG. FIG. 7 is a flowchart showing the operation of the CPU 111 of the main body unit 101 when a key input occurs. As shown in FIG.
The U111 performs an interrupt process for determining whether or not a key input has been performed (S701).

When there is a key input (Y in S701),
The CPU 111 issues a key data acquisition request to the sub-microcomputer 121 (S702).

It is determined whether the key data is a tray key, a power key, or another key (S703, S704, S705).

If the key data is, for example, a tray key (Y in S703), the CPU 111 executes the ROM-DRIV
It is determined whether the tray of E104 is open (S
706) Here, the CPU 111 sets the ROM-DRIVE
If it is determined that the tray 104 is closed (S706)
N), the CPU 111 issues a command to open the tray (S708).

Further, the CPU 111 executes the ROM-DRIVE
If it is determined that the tray 104 is open (S706)
(Y), the CPU 111 issues a command to close the tray (S708).

On the other hand, if the key data is, for example, a power key (Y in S704), the CPU 111
(S709), and issues a power supply stop request (power shutdown request) to the sub-microcomputer 121 (S710). .

If the key data is another key (Y in S705), the CPU 111 performs a process corresponding to each key (S711).

Next, the operation of the DVD-ROM reproducing apparatus of this embodiment for each occurrence event will be described. In the case of this DVD-ROM playback device, the auxiliary unit 1 is connected to an outlet from the power supply unit 103 by connecting to a commercial power supply or the like.
02 is supplied to the sub microcomputer 121.

When power is supplied to the sub-microcomputer 121, the sub-microcomputer 121 performs initialization for itself to operate (S201).

Next, various flags used for determining the activation state are initialized (S202).

The state waits for key input from panel key 123 (S203).

Here, for example, when the power key is pressed, key data indicating the power key is saved (S204).

Next, the sub-microcomputer 121 checks the state of the control flag (S205). When the power is turned on for the first time, the control flag is 0 (standby state).
The sub-microcomputer 121 controls each function of the auxiliary unit 102 in response to a key input.

Since the key input is the power key, the sub-microcomputer 121 proceeds to Y in the determination processing of S207 in FIG. 2, and executes the processing when the sub-microcomputer 121 presses the power key (S208). FIG. 3 shows details of the power key processing.

When the sub-microcomputer 121 performs the power key process, the sub-microcomputer 121 first checks the power flag to determine the power status of the main unit 101 (S3).
01).

In this case, the power flag is 0, and the power supply to the main body 101 is stopped, that is, the power is cut off, so that the power of the main body 101 is turned on (S30).
2). Next, the sub-microcomputer 121 sets the power flag to 1
(The power-on state of the main body unit 101) (S30).
3) Save the key when the power is turned on.

Next, the sub-microcomputer 121 sets the control flag to 1 (S305), and activates the timer 122 for monitoring the timeout of the activation of the main body 101 at the timing of starting the power supply.

In the main body 101, the CPU is supplied with power from the power supply 103 controlled by the sub-microcomputer 121.
111 executes the activation process of FIG.

In this case, the CPU 111 checks the activation flag at the time of activation and determines whether the activation is the first activation by itself or the activation from the state after the activation once and the suspension (S602).

When starting up for the first time after energization, since the start-up flag is 0, detailed initial diagnosis is executed irrespective of the power-on factor (S605).

After the completion of the initial diagnosis, the CPU 11 requests the sub-microcomputer 121 to set a start flag (S11).
608).

In the sub-microcomputer 121, S shown in FIG.
When the command from the main body unit 101 is recognized in the process of 215, 1 is set as a start flag indicating that the CPU 11 has been normally started in the process of S502 in FIG.

Subsequently, the CPU 111 initializes key input processing (S609), and requests the sub-microcomputer 121 to set a control flag (S610).

Upon receiving the control flag setting request from the CPU 111, the sub-microcomputer 121 sets 2 to the control flag (S504 in FIG. 5), and sets the main unit 101 to a state where keys are processed.

The sub-microcomputer 121 performs the determination process of S212 in FIG. 2 while waiting for a key input in the process of S203 (S212).

When power is supplied to the main body 101, the control flag becomes 1, so that the sub-microcomputer 121 operates the timer 122 at this timing to check for a timeout (S213).

Here, if a communication request is not received before the predetermined time elapses and the timer 122 times out, the sub-microcomputer 121 activates the CPU 111 itself or activates each device in the main body unit 101 while the CPU 111 is activating. It is determined that a fatal error such as a hang-up has occurred, and a startup error is displayed on the panel LED 125 (S21).
4).

In this state, when the user presses the power key,
Since the control flag is still 2, the sub microcomputer 121
Handles key input. In this case, the sub microcomputer 12
1 recognizes the power key (S207), and performs the power key processing of FIG. 3, that is, the power cutoff processing (S307) and the reset of the flag (S308).

When the sub-microcomputer 121 receives a communication request before the timer 122 times out, the sub-microcomputer 121
If the sub-microcomputer 121 determines that the key input has been started correctly and there is a key input thereafter, the sub-microcomputer 121 receives the key input on the main body unit 101 side because the control flag is set to 2 in the process of S205 in FIG. Is passed through, and the CPU 111 is left with the processing for the key input.

Here, referring to FIG.
The operation of No. 11 will be described. As shown in the figure, when the CPU 111 of the main body unit 101 receives a key input interrupt (Y in S701), the CPU 111
Sends a key data acquisition request to the sub-microcomputer 121 that has received the request within a predetermined time.
Returning to U111, the CPU 111 obtains key data.

The CPU 111 performs a process for each key data in the subsequent steps based on the key data obtained from the sub-microcomputer 121.

For example, if the key data is the power key (S7
04, Y), a system end process is performed, and after the state where the power supply of the main body unit 101 may be turned off is issued, a power cutoff request is issued to the sub-microcomputer 121 (S710).

When the sub-microcomputer 121 receives the power-off request, the sub-microcomputer 121 controls the power supply unit 103 to stop the power supply to the sub-microcomputer 121 of the main body unit 101 in the power-off processing of S510 in FIG. Then, the power supply of the sub-microcomputer 121 is stopped, and both the power flag and the control flag are returned to 0 in the process of S511.

Thereafter, since the two flags are in the initial state, when a key input occurs, the sub microcomputer 121
Will control the operation of the auxiliary unit 102 by itself.

Next, when the tray key is pressed in a standby state in which power is supplied only to the sub-microcomputer 121, the sub-microcomputer 121 recognizes the tray key in the processing of S209 in FIG. Execute the processing of

In this case, the sub-microcomputer 121 determines in S40
If it is determined in step 1 that the main unit 101 is not turned on, the same processing as the power-on processing in steps S402 to S406 is executed, and then a tray open command is issued to the ROM-DRIVE 104 in step S408, Open.

The CPU 111 of the main body 101 executes the processing in S4
When the power is supplied from the power supply unit 103 in the process 02, the following start process is started.

In this case, as shown in FIG.
1 first initializes the device (S601), and thereafter checks the activation flag.

As a result of this check, if the activation flag is 1
Then, since it is not the first activation, the CPU 111
A communication request is issued to the sub-microcomputer 121, and information on a power-on factor is acquired from the sub-microcomputer 121 (S60).
3).

Subsequently, the CPU 111 determines the power-on factor from the acquired information on the power-on factor (S60).
4, S606).

Here, if the power-on factor is, for example, whether the power key is on (Y in S604) or if the tray key is on (S604).
At 606, a simple initial diagnosis process is executed to shorten the startup time (S607).

If the tray key is pressed before the control flag is set (S610), the key processing is performed on the sub-microcomputer 121 side, and the processing shown in FIG.
In step 210, tray key processing is performed. Therefore, the tray key can be accepted even when the main body unit 101 is performing the startup process.

On the other hand, when the tray key is pressed with the control flag already set (Y in S610),
The main body 101 side, that is, the CPU 111 performs tray key processing, and proceeds to the processing of S706 to S708 shown in FIG.

As described above, the DVD-ROM of this embodiment
According to the playback device, in the standby state where only the sub-microcomputer 121 is energized, the sub-microcomputer 121 operates each function of the auxiliary unit 102 specified by an input operation from the panel key 123 or the like. Can be completely shut off, and the power consumption of the entire system can be reduced without performing complicated management with basic software and various devices.

When any user operation is performed in a standby state in which only the sub-microcomputer 121 is energized, the sub-microcomputer 121 causes the auxiliary unit 1 to respond to the operation.
02, the power supply unit 103 is controlled to supply power to the main body unit 101, that is, the CPU 111. If the key operated by the user is, for example, a tray key, the tray is carried out, and the CPU 111 performs the initialization process. From the start, after the initial diagnosis and before the normal startup, the user can perform an operation such as setting a ROM disk on the drawn tray without waiting for the startup of the CPU 111, and the waiting time on the user side Can be eliminated.

Further, the main body 1 is
01 can operate normally and the contents of the initial diagnosis can be changed based on the power-on factor. That is, the contents of the initial diagnosis at the time of starting the main body unit 101 are changed depending on the starting state, and the initial diagnosis is performed only when necessary. By doing
A personal computer application device that can reduce the startup time can be provided.

The present invention is not limited to the contents of the above embodiment. As another embodiment, music playback of an audio CD, which can be executed only by sending a command to a drive, can be executed by the auxiliary unit 102 without starting the main unit 101.
Can be controlled and operated only by the sub-microcomputer 121.

[0129]

As described above, according to the present invention, when the user operates the interface unit in the standby state in which only the sub-control unit is energized, the sub-control unit operates according to the operation content. And operating the power supply unit to supply power to the main control unit, so that the user can operate the user interface until the main control unit is activated, thereby reducing the user's waiting time. Can be. According to the present invention,
In the standby state where only the sub-control unit is energized, the power supply of the main control unit can be completely shut off, and the power consumption of the entire system can be reduced without complicated management of basic software and various devices. .

Further, according to the present invention, the main control unit enters the standby state after the first start-up process executed by the first power-on and after the main control unit is started, where the power is turned on again. In this case, the second startup processing without the initialization processing is performed, so that the startup time can be shortened as compared with the first startup.

Further, according to the present invention, if there is no communication request to the sub-control unit after a predetermined time has elapsed since the start of the main control unit, the fact that an error has occurred is displayed. can do.

By improving the starting operation in this manner, power consumption can be reduced and the waiting time of the user can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a DVD-ROM playback device according to one embodiment of the present invention.

FIG. 2 is a flowchart when a sub-microcomputer of an auxiliary unit of the DVD-ROM reproducing apparatus according to the embodiment is initialized by energization and enters a standby state.

FIG. 3 is a flowchart of a process performed by a sub-microcomputer of an auxiliary unit when a power key of the DVD-ROM reproducing device of the embodiment is pressed.

FIG. 4 shows an RO of the DVD-ROM reproducing apparatus according to the embodiment;
9 is a flowchart of a process performed by a sub-microcomputer of an auxiliary unit when an M-DRIVE tray key is pressed.

FIG. 5 is a flowchart of processing performed by a sub-microcomputer of an auxiliary unit on a command requested by a main unit of the DVD-ROM playback device of the embodiment;

FIG. 6 is a flowchart of an initialization process performed when the power of the main body of the DVD-ROM playback device of the embodiment is turned on.

FIG. 7 is a flowchart when a key input occurs in the main body of the DVD-ROM reproducing device of the embodiment.

[Description of Signs] 101: body, 102: auxiliary, 103: power supply, 1
11: CPU, 114: activation factor determination device, 116: initial diagnosis device, 121: sub microcomputer (sub microcomputer), 123: panel key, 125: panel LE
D.

Claims (5)

[Claims] 1. An electronic device having a main control unit that is started by power supply from a power supply unit, executes initialization processing of each unit including itself, and controls each unit of the device, including a power switch, a function switch, An interface unit with a user including a switch and a display panel; power is supplied from the power supply unit; the interface unit is monitored and controlled according to a user operation; and the main control unit is operated in response to a user operation on the interface unit. And a sub-control unit for controlling the power supply unit so as to supply power to the electronic device. 2. The electronic device according to claim 1, wherein the main control unit executes a detailed diagnosis process including an initialization process for controlling each unit of the device by a first power supply from the power supply unit. First activation processing means for operating each unit under its own control; and a standby operation of the interface unit or a non-operation state for a predetermined time or more occurs when each unit of the device is operated by the first activation processing means. In this case, means for controlling the power to a minimum power use state capable of maintaining an operable state of each of the device units, and in this power use state, when a standby release operation is performed at the interface unit, An electronic device, comprising: second activation processing means for operating each unit of the device by a simple diagnosis process without the initialization process. 3. The electronic device according to claim 1, wherein the sub-control unit controls the power supply unit and the main control unit transmits the power to the main control unit even if a predetermined time has elapsed after power is supplied to the main control unit. An electronic device, comprising: means for displaying, on the display panel of the interface unit, that an error has occurred when there is no communication request in the sub control unit. 4. The electronic device according to claim 1, wherein the sub control unit controls the power supply unit and receives a communication request from the main control unit within a predetermined time after power is supplied to the main control unit. If there is, a means for notifying the main control unit of the information of the power-on factor, the main control unit, based on the information of the power-on factor notified from the sub-control unit, of each unit of the device Means for judging an operation state and taking over control of each unit of the device from the sub-control unit. 5. A system start-up method for an electronic device having a main control unit for performing an initialization process for controlling each unit of a device by supplying power from a power supply unit and starting control of each unit of the device, comprising the steps of: Monitoring the interface with the user, including a power switch and a switch for operating the function by supplying the power; and, when a user operation is performed on the interface, causing the main control unit to supply power and the user operation Operating the interface unit according to the following.