JPH08297530A - Computer system,its suspending method and its resuming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a computer system with a further flexible hibernation mode and a method for controlling it. SOLUTION: This system is composed of a host part 1, power source managing part 2, power source part 3 for data backup, power supplying part 4, auxiliary storage device 5, and memory 6. When a batter driving signal is outputted from the power source 3 for data backup due to power failure, the power source managing part 2 outputs an interrupting signal according to a program, the host part 1 backups present data to the auxiliary storage device 5 according to the interruption signal, and outputs a power source interruption instruction word, and the power source managing part 2 interrupts the power supply of this system by outputting a main power source interruption signal according to the power source interruption instruction word, or interrupts the power supply from the system by outputting a battery power source interruption signal. When a wake-up signal is inputted in the power supply interruption state, the power supply is resumed by outputting a power supply signal. When the power failure state is released, and the power supply is resumed, the host part restores a data/working environment, discriminates the wake-up source, and executes an operation according to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system and a control method therefor, and more specifically, it additionally adds interface logic with a host of the computer system to provide data and instructions between the host and the interface controller. By enabling word transmission, it is possible to selectively mask the source (wake-up source) that requests wake-up in the hibernation state, or to control various operations in the hibernation state, and further to control the PC (personal computer).
The present invention relates to a computer system and a control method (suspend method and resume method) applicable to other systems.

[0002]

2. Description of the Related Art With the technical development of computers, not only the development of their functions but also the aspect of energy saving has been taken into consideration, and the power saving functions of computers have been developed accordingly.

Power saving up to now (power saving)
The PC supporting the function supports the suspend mode through the use of the power saving element and the addition of the PMS (Power Management System) control logic to support the power saving element, and goes one step further, and after a certain period of time, When the system is not operating, the current input / output status (I / O status) of the system is HDD (hard disk driver)
It is designed to support up to the so-called hibernation mode, which does not supply the power itself by storing it in a certain area of.

The conventional computer system as described above generally has the following two functions.

First, in the case where the power supply is cut off due to a sudden power failure or a malfunction that occurs during use of the computer, the current working status of the computer is stored in an auxiliary storage device such as a hard disk, and then the power is turned on. When it is supplied again, it has an automatic recovery function in case of an emergency that restores the working state to the state before the power was cut off according to the contents stored in the auxiliary storage device.

Secondly, when the user is not operating the computer for a certain period of time while the computer is operating, the current work status of the computer is stored in an auxiliary storage device such as a hard disk, and automatic operation is performed. The power saving function is configured to restore the contents stored in the auxiliary storage device to the state before the power shutdown when the user supplies the power again after the power is shut off.

In recent personal computers (PCs), computer systems equipped with an automatic recovery function in an emergency or a power saving function have been well received.
The demand market is expanding.

The prior art relating to the present invention relating to the above-mentioned automatic recovery function or power supply function in an emergency is as follows:
Korean Patent Application No. 93-31255 (Filing date December 30, 1993) “Auxiliary power supply for backup of working environment in case of emergency”, Application No. 94-13919 (Patent date) : June 20, 1994
"Stop crack control device and method", Japanese Patent Application No. 93-3116 (filing date: 19)
"Power supply control device for computer peripherals" (March 4, 1993), "Power supply cutoff signal for computer peripherals" of application number 92-14590 (filed on: August 13, 1992) of the same country patent application. Generator circuit ", application number 94-27299 of the same country patent application (filing date: 1994 10
“Network hibernation” on the 25th of a month) and the like.

However, in the conventional computer system as described above, the power supply to the system is automatically cut off when there is no signal input by the user for a certain period, so that the user supplies power again. In order to restore the work to the previous state, that is, to wake up the system, the power switch must be operated.

In order to solve the inconvenience caused by the operation of the power switch, a product having a function to wake up the system without using the power switch was shipped in early 1995.

In the case of the product shipped at the beginning of 1995, the system is waked up not only by the power switch but also by the keyboard input or the ring signal of the fax or the modem. As a technology related to such a function, Korean Patent Application No. 94-35953 (filing date: December 1995)
There is "Hibernation that can recover work by key signal input" on March 22), and when hibernation occurs, the power to all devices is cut off and
A technology is described in which a separate emergency power supply is supplied only to the microcomputer and the keyboard, and when a signal according to the user's keyboard operation is input, the power is supplied again to restore the work to the previous state.

[0012]

However, in the above conventional computer system, in order to confirm the wake-up source, that is, the auxiliary device that outputs the wake-up signal, or to mask the wake-up request corresponding to each wake-up source. However, there was a problem that there was a certain limit. Further, the conventional computer system has a problem that the user cannot enter the hibernation mode at an arbitrary time due to the user's convenience.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to add an interface logic with a host of a system separately to enable data between the host and the interface controller. By enabling the input and output of commands and commands, it is possible to confirm the selective masking of the source that requests wakeup (wakeup source) in the hibernation state, or an auxiliary device that outputs a wakeup signal. It is to provide a new and improved computer system capable of entering the hibernation mode at any time according to the convenience of a person and a control method (suspend method and resume method) thereof.

[0014]

To solve the above problems, according to a first aspect of the present invention, a host unit, a power management unit, a data backup power supply unit, a power supply unit, and an auxiliary unit. In a computer system provided with a storage device and a memory, as described in claim 1, the power management unit can operate from the data backup power supply unit when an event does not occur in a peripheral device for a certain period of time or due to a power failure. An interrupt signal is output when a battery-powered signal is output or when an instruction word corresponding to the execution of a specific program set by scheduling is input; the host unit follows the current work environment in accordance with the interrupt signal. And backing up the data in the auxiliary storage device, outputting a power shutoff command; the power management unit,
According to the power cutoff command, a main power cutoff signal is output to cut off the power supply of the system, or a battery power cutoff signal is output to cut off the battery power supply to interrupt the power supply from the system; When a wake-up signal is input in the power supply cutoff state, the power management unit outputs a power supply signal to restart power supply, or when the power failure state is released and power supply is restarted, the host unit is After restoring the backed up data and the work environment, the wakeup source that has output the wakeup signal is discriminated, and the operation according to the wakeup source is performed.

Further, according to a second aspect of the present invention, the computer system allows the user to turn off the power supply of the system and back up the data currently being worked at an arbitrary time for convenience. A switch for selecting a function may be provided, and when the switch is operated, the power management unit may output an interrupt signal to cut off the power supply to the system.

Further, as described in claim 3, the power management unit of the computer system is such that the power supply of the system is shut off and the data currently being worked is backed up, and a signal is input from the wake-up source and A wake-up source interface unit that outputs a wake-up signal that wakes up the system when a signal corresponding to the execution of a predetermined operation is output; a battery-powered signal is input when an event does not occur in a peripheral device for a certain period of time or when a power failure occurs When a command word corresponding to scheduling is input, or when the switch is actuated, an interrupt signal is output, and a power-off command word is input from the host unit, the corresponding main Output the power cutoff signal or battery cutoff signal to supply power to the system. When the wake-up signal is input, the switch is actuated again, or a preset predetermined time elapses when the power supply of the system is cut off, the system outputs the power supply signal and outputs the system again. And a controller for restarting the power supply of the device; and an interface for transmitting control signals and data between the controller, the power supply unit, and the host.

The interface unit of the computer system further includes an address decoder which decodes an address output from the host unit and outputs a corresponding output permission signal and a corresponding latch permission signal. A host interface control unit that outputs a corresponding signal for controlling data input / output between the host unit and the controller according to a signal output from the address decoder; driven according to a latch enable signal;
An input port for latching data output from the host unit; an output port driven in response to an output enable signal for outputting data and control signals output from the controller onto a system bus .

When the wake-up signal is output from the wake-up source interface unit, the controller of the computer system compares the wake-up signal with the masking bit set in the internal register and outputs the wake-up signal. Allowed (enabled)
In the case of, the power supply drive signal outputs the output signal, and in the case of the disable (disable), the wakeup signal can be ignored.

When the interrupt signal is output from the power management unit, the host unit of the computer system checks the power supply cutoff setup flag stored in the memory, When the power supply cutoff mode is set, the data and work environment is backed up, and when the power supply cutoff mode is not set, the battery power cutoff signal is output to the data backup power supply unit to turn off the power. Can be configured as.

Alternatively, when power is supplied again in the system power supply cutoff state, the host unit of the computer system checks the power supply cutoff setup flag stored in the memory. ,
When the system power supply cutoff mode is not set, normal boot processing is performed, and when the system power supply cutoff mode is set, the data and the work environment can be restored.

Alternatively, the host portion of the computer system is supplied with power again in a state where the power supply to the system is shut off and the data currently being worked is backed up as described in claim 8, the work environment and the data. When the wake-up source that has output the wake-up signal is the switch, the power supply to the system is cut off, and the operation performed before the data backup state in which the work is performed is restarted is restored. be able to.

Alternatively, the host unit of the computer system is powered on again in a state where the power supply to the system is cut off and the data currently being worked is backed up, as described in claim 8, and the work environment and the data. After the wake-up signal is output, the wake-up source that outputs the wake-up signal performs the operation corresponding to the ring signal transmission of the fax or modem, and then the power supply of the system is cut off again to store the working data. be able to.

Alternatively, the host section of the computer system is powered on again in a state where the power supply to the system is cut off and the data currently being worked is backed up as described in claim 9, the work environment and the data. Can be configured to execute the reserved program if the wakeup source that has output the wakeup signal is due to a lapse of time set to perform the scheduled program.

It is preferable that the power management unit of the computer system is composed of one integrated circuit.

In order to solve the above problems, the second aspect of the present invention
A computer system comprising a host unit, a power supply management unit, and a volatile memory, which is configured based on the above viewpoint, is a program reserved by a user at a preset time as set forth in claim 12. In executing the: the host unit records the reserved time in the timer of the power management unit, stores the flag of the program to be executed in the non-volatile memory, and instructs the power management unit to supply a power. The power management unit outputs a power supply cutoff signal to cut off the power supply to the computer system, and when the power supply is resumed thereafter, the power supply is turned on at the time reserved by the timer. When the power supply is restarted, the host unit checks the flag stored in the volatile memory and reserves the program set in the flag. It is characterized in that it is configured to run.

To further solve the above problems, according to a third aspect of the present invention, there is provided a suspend method for a computer system. In this suspending method, as described in claim 13, when the power supply is interrupted due to a sudden power failure or a user's error while the system is operating,
Outputting an interrupt signal when an event does not occur from the peripheral device for a certain period of time or when an instruction word set by scheduling is set; and when the interrupt signal is output, the central processing unit sets a setup flag. To determine whether the flag for shutting down the system power is set; if the mode for shutting down the system power is set, the current computer hardware Storing the state in a memory and storing the contents of all the memories in an auxiliary storage device; determining whether the current state is a power failure state, and cutting off the power supply due to a power failure Output a battery shutdown signal to the data backup power supply to shut off the battery supply and turn on the power. And a step of putting into a state; if the power supply is not cut off due to the occurrence of the power failure, a main power supply cutoff signal is output to the power supply unit to cut off the applied regular power supply and supply battery power to the system. And a step of bringing the power supply of the device into a state of being cut off.

In the suspend method of the computer system, as described in claim 14, the user separately cuts off the power supply of the system at any time for convenience and backs up the data currently being worked. It is possible to further include the step of outputting an interrupt signal when the switch attached to the switch is activated.

In order to solve the above problems, the fourth aspect of the present invention
According to another aspect, there is provided a resume method for a computer system. According to this resume method, as described in claim 15, the power supply to the system is shut off due to the occurrence of the power failure, and the power supply is restarted when the power failure is released in the state where the working data is backed up. The wake-up signal is output from the wake-up source while the power supply to the system is cut off and the working data is backed up, or the wake-up signal is not generated and automatically wakes up for a predetermined time. Power supply to the system is restarted when a predetermined time set so that the power supply to the system is cut off and the working data is backed up. And system initialization and self-diagnostic steps; Then, if the current state is that the system power supply is cut off and the working data is not backed up, a step of performing a normal boot process; When the backup mode is set, recovering the contents of all memories from the auxiliary storage device, and restoring the work environment to the state before the power supply to the system was cut off and the data was backed up; A step of determining a wake-up source that has output a wake-up signal and performing a predetermined operation according to the wake-up source.

Further, in the step of performing a predetermined operation according to the wake-up source of the resume method, the wake-up is performed in a state where the power supply of the system is shut off and working data is backed up as described in claim 16. If the wake-up source that requested is due to the operation of a separately installed switch, the step of restarting the work performed before the power supply of the system is cut off and the working data is backed up; After the requested wake-up source has performed the appropriate action according to the fax or modem ring signal transmission,
Powering down the system again to back up working data; set if the wakeup source that requested the wakeup is due to a time lapse reserved to run a scheduled program It can also be configured to perform the steps of performing a program module.

[0030]

DETAILED DESCRIPTION OF THE INVENTION Referring to the accompanying drawings,
A preferred embodiment of a computer system configured according to the present invention and a control method thereof (suspend method and resume method) will be described in detail.

As shown in FIG. 1, the configuration of a computer system according to an embodiment of the present invention comprises a host unit 1 and a power management unit (PMS) 2 connected to a bus.
A data backup power supply unit (DBPS) 3, a power supply unit (SMPS) 4, an auxiliary storage device 5, and a non-volatile memory 6 connected to the bus.

The host unit 1 represents the main processing unit of the system to which the present invention is applied. The host unit 1 includes a central processing unit 11, a system controller 12, a RAM 13, a ROM 14, and an input / output unit 1.
5, the system controller 12 includes a bus controller, a DMA controller, an interrupt controller and the like.

As shown in FIG. 2, the configuration of the power management unit 2 of the computer system according to the embodiment of the present invention includes an input port 21, an output port 22 and an internal data bus connected to the bus. The controller 23 connected to the SM and the SM connected to the controller 23
PS interface unit 24 and wake-up source interface unit 25 connected to the controller 23
And an address decoder 27 connected to the bus, and a main interface unit 28 connected to the address decoder 27 and the controller 23.

The controller 23 has a built-in timer, which operates at the same time as the start of the hibernation operation, counts the set time, and wakes up the system when the set time elapses. The corresponding signal is output from the controller 23. The timer also counts the time set to execute the program according to the scheduling.

The wake-up source interface section 2
Reference numeral 5 is connected to a keyboard that outputs a wakeup signal from the hibernation state, or a number of wakeup sources 26 such as a fax machine and a modem.

The SMPS interface section 24 performs signal transmission among the controller 23, the power supply section 4 and the data backup power supply section 3 to prevent malfunction due to noise or data error. Further, the power supply unit 4 may be built in.

In the embodiment of the present invention, the host unit 1 is provided by using the separate data input port 21 and output port 22.
And data input / output with the controller 23 of the power management unit 2 are possible. A command and a protocol for inputting / outputting data are separately defined, and the controller 23 is configured to do this.

The host interface section 28 and the address decoder 2 for controlling the input / output from the host section 1
7 is installed separately. Further, a separate hibernation switch S1 is attached so that the user can arbitrarily select hibernation depending on the situation.

The computer used in the embodiment of the present invention is a general computer having a von Neumann type computer structure, but this embodiment is also applicable to a computer such as a personal computer.

Next, the operation of the computer system configured as described above will be described.

When the set hibernation interrupt generation condition is satisfied while power is applied and the computer is operating, the suspend mode of the hibernation module shown in FIGS. 3 and 4 is executed.

When the user operates the hibernation switch S1 in order to arbitrarily perform hibernation when the user does other work or leaves his seat during the work,
A signal according to the operation of the hibernation switch S1 is input to the controller 23 of the power management unit 2 (S11
0).

If the computer keyboard, mouse, hard disk drive, etc. do not operate for a certain period of time, that is, if an event does not occur, the host unit 1 outputs a time-over signal (TIME-OUT) (S120). ).

Further, the hibernation module may be activated by pre-scheduled software (S130).

Further, when the power supply from the outside is cut off due to a sudden power failure or the like, the data backup power supply unit (DBPS) 3 switches the external AC power supply to the battery power supply, and then the battery drive signal (UPS ON) is sent. Then, the output battery drive signal (UPS ON) is input to the controller 23 (S140).

As described above, when the user turns on the hibernation switch, the time-over signal (TIME-OUT) is input without an event for a certain period of time, or the battery-powered signal (UPS is on) due to a power failure.
Is input or an instruction word corresponding to the execution of hibernation module by scheduling is input, the controller 23 of the power management unit 2 outputs a hibernate interrupt signal (HIBERNATE) (S15).
0).

When the hibernation interrupt signal (HIBERNATE) is input, the central processing unit 11 of the host unit 1 calls the hibernation service routine and then checks the hibernation setup flag stored in the non-volatile memory 6. Then, it is determined whether or not the hibernation support mode is currently set (S160 to S170).

Generally, the hibernation service routine is included in the BIOS existing in the ROM 14 in the case of a PC, and may be included in the OS kernel in the case of a multitasking operating system.

In the above step, when the hibernation support mode is currently set, the central processing unit 11 stores the current computer state in the hibernation service routine work space. That is, the current working states of the central processing unit and controller of the computer and the input / output device are stored in the RAM 13, and the data of all the current memories on the computer are stored in the auxiliary storage device 5 (S180 to S190).

After storing the operating state and data of the computer in response to the execution of the hibernation, the central processing means 11 outputs a power cutoff command to the power management unit 2.

Address decoder 27 of the power management unit 2
Decodes an address applied according to the power-off command output of the host unit 1, outputs a corresponding latch enable signal, and inputs the input port 21 according to the latch enable signal applied to the host interface controller 28. , And simultaneously outputs a data input request signal to the controller 23.

The input port 21 latches the power-off command word output on the system bus according to the latch enable signal, and the controller 23 responds to the data input request output from the host interface controller 28. The power-off command word latched in is read.

When the host unit 1 outputs the power-off command, the controller 23 determines whether the current state is the hibernation execution state due to the power failure state and performs the corresponding power-off operation accordingly. ,
Enter the hibernation state (S200-S
220).

When the driving of the power supply section 4 is stopped due to the occurrence of a power failure, the SMPS interface section 24 outputs a power failure signal to the controller 23. Therefore, when the power failure signal is output from the SMPS interface unit 24, the controller 23 determines that the current state is the hibernation performance state due to the power failure, and the data backup power source unit 3 receives the battery cutoff signal (battery off). Is output (S230).

The data backup power source 3 interrupts the power supply of the battery (not shown) by the battery shut-off signal, and accordingly the SMPS 4 shuts off the power supply of the system battery (S240).

When it is not in the hibernation execution state due to the power failure, the controller 23 outputs a main power supply cutoff signal (AC off) to the data backup power supply section 3 (S250).

The SMPS 4 has a main power cutoff signal (AC
The input of (OFF) interrupts the AC main power supply,
The battery power supplied from the data backup power supply unit 3 is supplied to the system. Therefore, the SMPS4
Shuts off the main power supply to the system and supplies the battery power supplied from the data backup power supply unit 3 to the system (S260).

In this way, the power supply to the computer is interrupted and the computer enters the hibernation state.

In the step (S170) of judging whether or not the hibernation support mode can be set, when it is judged that the hibernation support mode is not set, the central processing unit 11 causes the data backup power source unit 3 to send a battery cutoff signal. (Battery off) is output (S210).

The data backup power supply section 3 cuts off the power supplied from the battery in accordance with the battery cutoff signal (battery off) to enter the power off state.

On the other hand, when the computer is in the hibernation state in which the power is off, whether the user operates the power switch again to supply the power, the power failure is released, or the keyboard is operated to input data. 5 and 6 depending on whether a ring signal such as a fax or a modem is input, a separate hibernation switch is activated, or whether a set time has elapsed.
The hibernation module resume process as shown in FIG.

That is, as shown in FIGS. 5 and 6, when the current hibernation state is due to the occurrence of a power failure, the SMPS4 is released when the power failure is released.
Supplies the applied utility power to the system (S32
0).

If the current hibernation state is not due to the occurrence of a power failure, the wakeup signal output according to the driving of the wakeup source 26 is transmitted through the wakeup source interface unit 25 to the controller 2
Input to 3.

When the wake-up signal is output from the wake-up source interface 25, the controller 23 compares the wake-up signal with a mask bit set in an internal register (not shown). A power supply signal (power on) is output to the SMPS interface unit 24 (S330).

In other words, when an input from the keyboard occurs and a corresponding key signal is output from a keyboard controller (not shown), the wakeup source interface section 25 outputs a wakeup signal according to the key signal input, In accordance with this, the controller 23 compares with the set mask bit, and if it is permitted,
A power supply signal (power on) is output, and when the input signal is prohibited, the wakeup request is ignored. The mask bit is information about a signal set to wake up the system in the hibernation state.

When a ring signal for a modem or fax is transmitted, the wakeup source interface unit 25
Outputs a corresponding wake-up signal, and in response to this, the controller 23 compares the mask bit with the set mask bit, and outputs a power supply signal (power-on) when it is permitted.

Also, the controller 23 outputs a power supply signal (power on) when a signal corresponding to the operation of the hibernation switch separately mounted in the hibernation state is input through the input port 21.

Unlike the case where the power supply is restarted by the wakeup, as a result of counting the time set in the hibernation state by the timer mounted inside the controller 23, when the set time has elapsed and the wakeup does not occur, , The corresponding signal is output to execute the pre-scheduled program, and accordingly the controller 23 outputs a power supply signal (power on) to the SMPS interface unit 25 (S34).
0).

As described above, the wake-up source that has output the wake-up signal in the hibernation state can be discriminated, and the enable or disable signal can be selectively generated according to the wake-up source.

When the power supply signal (power-on) is input through the SMPS interface section 24, the power supply section 4 restarts the power supply operation of the system.

When the power is supplied again from the system, the central processing unit 11 of the host unit 1 initializes the system and performs self-diagnosis (S350), and then sets the hibernation state flag stored in the non-volatile memory 6. Check to determine if it is currently in hibernation,
According to this, the restoration work to the previous state is performed (S36).
0).

When the hibernation state flag is set in the normal mode, the central processing unit 11 carries out a normal boot process according to the power supply (S370).

When the hibernation flag is set in the hibernation mode, the central processing unit 11 loads all the memory contents from the auxiliary storage device 5 into the RAM 13.
To restore the data to restore the work environment of the computer to the previous state (S380 to S390).

As described above, after the work environment of the computer is restored to the previous state, the central processing unit 11 discriminates the source (wake-up source) which has requested the wake-up and performs the work corresponding to the discriminated wake-up source. It executes (S400 to S470).

That is, when the central processing unit 11 outputs a command for confirming the wakeup source requesting the wakeup and the corresponding address to the power management unit 2, the host interface control unit 28 outputs data to the controller 23 according to the applied address. Output the input request signal,
The controller 23 reads the wakeup source confirmation command input through the input port 21.

The controller 23 is the central processing unit 1
According to the wake-up source confirmation command output from 1, the data for the wake-up source that requested the wake-up in the hibernation state is output on the system bus through the output port 22.

The central processing unit 11 confirms the wakeup source requesting wakeup in the hibernation state according to the wakeup source data output from the power management unit 2.

The central processing unit 11 restarts the operation performed before the power supply is cut off, when the wakeup source requesting the wakeup is operated by the hibernation switch attached separately (S410 to S410).
420).

Further, when the wakeup source requesting the wakeup is in accordance with ring signal transmission of a fax or a modem, the central processing unit 11 performs an operation according to ring signal reception, that is, an operation according to data reception, and then again. Restore hibernation.

That is, when the fax or modem ring signal is transmitted in the hibernation state,
After the system is resumed and the operation according to the ring signal transmission is performed, the hibernation suspend operation is performed again to prevent unnecessary power consumption (S43).
0-S450).

Further, the central processing unit 11 executes the scheduled program when the wakeup source requesting the wakeup executes the scheduled program so that the set time of the timer has elapsed.

In the above embodiments, the process of performing the hibernation function in the computer has been described, but the present invention is not necessarily limited to such an example, and can be applied to all digital systems operated by digital signals.

It is also possible to use each component for performing the hibernation function as an IC.

[0084]

As described above, according to the present invention, the interface logic with the host of the system is separately added so that data and command words can be input / output between the host and the interface controller. By doing so, it is possible to perform the selective masking operation according to the wake-up source to which the hibernation is applied. In addition, various operation control is possible in the hibernation state,
Provided are a computer system applicable to digital systems other than PCs, and a control method (suspend method and resume method) thereof.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing a computer system configuration according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically showing a configuration of a power management unit of the computer system according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a suspend process of the computer system according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a suspend process of the computer system according to the embodiment of the present invention.

FIG. 5 is a flowchart showing a resume process of the computer system according to the embodiment of the present invention.

FIG. 6 is a flowchart showing a resume process of the computer system according to the embodiment of the present invention.

[Explanation of symbols]

 1: Host unit 2: Power management unit 3: Data backup power supply unit 4: Power supply unit 5: Auxiliary storage device 6: Non-volatile memory 11: Central processing unit 12: System controller 13: RAM 14: ROM 15: Input / output Part 21: Input port 22: Output port 23: Controller 24: SMPS interface unit 25: Wake-up source interface 26: Wake-up source 27: Address decoder 28: Host interface control unit

Claims (16)

[Claims] 1. A host unit, a power supply management unit, a data backup power supply unit, a power supply unit, an auxiliary storage device,
In a computer system including a memory, the power management unit is set by a scheduling when an event does not occur in a peripheral device for a certain period of time, when a battery drive signal is output from the data backup power supply unit due to power failure, or by scheduling. When a command word corresponding to the execution of the specified program is input, an interrupt signal is output; the host unit backs up the current work environment and data in the auxiliary storage device according to the interrupt signal, and then supplies power. According to the power cutoff command, the power management unit outputs a main power cutoff signal to cut off the system power supply or outputs a battery power cutoff signal to cut off the battery power supply according to the power cutoff command. To interrupt the power supply from the system; When-up signal is input, the one power management unit to restart the power supply outputs a power supply signal, the power failure state is canceled by the power supply is resumed,
A computer system, comprising: after the host unit restores the backed up data and working environment, determines a wake-up source that has output the wake-up signal and performs an operation according to the wake-up source. 2. The system further comprises a switch for selecting a function by which a user can turn off the power supply of the system to back up the data currently being worked at any time for convenience. The computer system according to claim 1, wherein the power management unit outputs an interrupt signal to cut off power supply to the system. 3. The power management unit outputs a signal corresponding to a signal input and execution of a predetermined operation from a wake-up source in a state where the power supply of the system is cut off and the data currently being worked is backed up. And a wake-up source interface unit that outputs a wake-up signal that wakes up the system; if an event does not occur in a peripheral device for a certain period of time, a battery-powered signal is input due to a power failure, or an instruction word according to scheduling is issued. When an input signal is input or when the switch is activated, an interrupt signal is output, and when a power shutdown command is input from the host unit, the corresponding main power shutdown signal or battery shutdown signal is output and the system is activated. Shut off the power supply to the A controller that outputs a power supply signal and restarts power supply to the system again when an up signal is input, when the switch is actuated again, or when a preset predetermined time has elapsed; The computer system according to claim 1, further comprising: an interface for transmitting control signals and data between the power supply unit and the host. 4. The interface unit: an address decoder that decodes an address output from the host unit and outputs a corresponding output enable signal and a corresponding latch enable signal; and a signal output from the address decoder. A host interface control unit that outputs a corresponding signal to control data input / output between the host unit and the controller; driven according to a latch enable signal;
An input port that latches data output from the host unit; an output port that is driven according to an output enable signal and outputs data and control signals output from the controller onto a system bus; The computer system according to claim 3, wherein 5. The controller: When a wake-up signal is output from the wake-up source interface unit, the controller compares the wake-up signal with a masking bit set in an internal register to determine if the wake-up signal is enabled. 4. The computer system according to claim 3, wherein the wakeup signal is ignored when the wakeup signal is output when the output signal is disabled. 6. The host unit: When an interrupt signal is output from the power management unit, checks the power supply cutoff setup flag stored in the memory, and when the power supply cutoff mode is set, The data and work environment are backed up, and when the power supply cutoff mode is not set, a battery power cutoff signal is output to the data backup power supply unit to turn off the power supply. The computer system according to claim 1. 7. The host unit: When power is supplied again in the system power supply cutoff state, checks the power supply cutoff setup flag stored in the memory, and the system power supply cutoff mode is not set. The computer system according to claim 1, wherein the computer system is configured to perform a normal boot process in some cases and to restore data and a work environment when the system power supply cutoff mode is set. 8. The host unit outputs a wake-up signal after power is supplied again to restore the work environment and data in a state where the power supply to the system is cut off and the data currently being worked is backed up. 2. The computer system according to claim 1, wherein when the wake-up source is the switch, the power supply to the system is cut off to resume the operation executed before the working data backup state. 9. The host unit outputs a wake-up signal after power is supplied again to restore the work environment and data in a state where the power supply to the system is cut off and the data currently being worked is backed up. 2. The computer system according to claim 1, wherein after the wake-up source performs an operation corresponding to a ring signal transmission of a fax or a modem, the power supply of the system is cut off again to store working data. 10. The host unit: After the power supply to the system is cut off and the current working data is backed up, the power is supplied again to restore the working environment and the data, and then the wake-up signal is output. The computer system according to claim 1, wherein the reserved program is executed when the wake-up source is due to a lapse of time set to execute the scheduled program. 11. The computer system according to claim 3, wherein the power management unit includes one integrated circuit. 12. In a computer system including a host unit, a power management unit, and a volatile memory, the user executes the reserved program at a preset time: the host unit controls the power management. The reserved time is recorded in the timer of the unit, the flag of the program to be executed is stored in the non-volatile memory, and the power supply command is output to the power management unit;
The power supply cutoff signal is output to cut off the power supply to the computer system, and when the power supply is restarted thereafter, the power supply signal is generated at the time reserved by the timer; the power supply is restarted. Then, the host unit is configured to check the flag stored in the volatile memory and execute the reservation program set in the flag. 13. A command set by scheduling, when a power supply is cut off due to a sudden power failure or a user error during operation of the system, an event does not occur from a peripheral device for a certain period of time, or a command set by scheduling. If set, outputting an interrupt signal; and when the interrupt signal is output, the central processing unit checks the setup flag to determine whether a flag for cutting off the power supply of the system is set. A step of determining; a step of storing the current hardware state of the computer in the memory and storing the contents of all the memories in the auxiliary storage device when the mode for cutting off the power supply of the system is set. And; judging whether or not the current state is a power failure, and cutting off the power supply due to the occurrence of a power failure. In this case, a step of outputting a battery cutoff signal to the power supply unit for data backup to cut off the battery supply to turn off the power supply; Outputting a power cutoff signal to cut off the applied regular power supply, supply battery power, and cut off the power supply to the system. Suspend method. 14. The user, at his convenience, at any time,
The method of claim 13, further comprising outputting an interrupt signal when a separately mounted switch is activated to shut off the power supply of the system to back up the data currently being worked on. Computer system suspend method. 15. A step of restarting the power supply to the system when the power supply to the system is interrupted due to the occurrence of the power failure and the power failure is released in the state where the working data is backed up; Supply is cut off,
If the wake-up signal is output from the wake-up source or the wake-up signal is not generated for a predetermined time and the predetermined time that is set to be automatically waked up with the working data backed up, The step of restarting the power supply to the system; the step of performing the system initialization and the self-diagnosis when the power supply to the system is cut off, the working data is backed up, and the power supply is restarted. Checking the power supply cut-off state flag, and if the current state cuts off the power supply to the system and is not in a state where the working data is backed up, a normal boot process is executed; Auxiliary storage when the mode in which the power supply is cut off and the work in progress is backed up is set To restore the work environment to the state before the system power supply was cut off and the data was backed up; the wakeup source that output the wakeup signal was identified and wakeup was performed. A step of performing a predetermined operation depending on the source; and a resume method for a computer system. 16. A switch to which a wake-up source requesting wake-up is separately attached in a state of performing a predetermined operation according to the wake-up source while power supply to the system is cut off and working data is backed up. If so, restarting the work that was done before the system was powered down to back up the work in progress; the wakeup source that requested the wakeup was a fax or modem ring signal transmission. Power off the system again to back up working data after performing the appropriate action according to the following; due to the time lapse reserved for the scheduled program by the wakeup source that requested the wakeup. If one is set Steps and performing a program module has; characterized by comprising the claim 15 resuming method of a computer system according.