KR950013264B1 - Automatic back-up and recovery device and method in computer systems - Google Patents

Abstract

The device comprises a memory unit which receives the backup power of data which are in processing, a battery which temporarily supplies the power of computer system for data backup in case that power supply is cut off, a charging controlling unit which recharges in case that voltage level is insufficient, a power supplying unit which provides voltage to every parts of computer system for data backup, and a controlling unit which performs the backup of data in a hard disk, cuts out all power after the backup process, and restores data from the hard disk sequentially.

Description

Automatic backup and recovery device and method of computer system

1 is an operating system diagram of an automatic backup and recovery device for a computer system of the present invention.

2 is a block diagram of an automatic backup and recovery apparatus for a computer system of the present invention.

3 is a flowchart of an automatic backup and recovery method for a computer system of the present invention.

* Explanation of symbols for main parts of the drawings

1: slot 2: control part

3: Selective drive unit 4: Power supply unit

5: power selector 6: voltage monitor

7: battery 8: battery power detection unit

9: charging unit 10: charging monitor

11, 12, 13: power supply 14: switching unit

15: switching power supply

The present invention detects the abnormality of power supply (outage) in the computer system, and when a power failure occurs, automatically backs up all the information currently being processed in the computer to the hard disk, and then restarts the computer system after the power failure recovery. The present invention relates to an automatic backup and recovery apparatus and a method for recovering the stored information.

In particular, the present invention uses a hard disk as a storage means for data backup, and even in the case of supplying backup power, the battery level is normally monitored for backup power supply, and is always charged in advance in a state capable of supplying backup power. The two implement control and provide an automatic backup and recovery means by which the backup device itself is turned off (shut down) when the hard disk is backed up to achieve ultra-power savings.

In addition, as a feature of the present invention, in a computer system having a power saving control function in the suspend mode, when the suspend mode is executed, the computer power supply (ACV) is forcibly shut down to make it appear as if it is in a power failure state. Data bag during momentary power failure; It is to provide an automatic backup and a plurality of means that can prevent unnecessary power consumption of the computer system by performing the up operation.

In a conventional computer system, if a power failure occurs during operation of the computer, the data currently being processed is lost, and valuable information is lost. Therefore, it is inconvenient to recover the lost information by repeating the work that was being performed before the power failure. Of course, there is a problem that the loss of time and work processing occurs, thereby resulting in a decrease in work processing efficiency.

In addition, in the conventional computer system, when the corresponding AC power input selects one of 110 volts and 220 volts, it depends on manual switch operation. There has been a problem that the computer circuit is damaged by the application of overvoltage.

On the other hand, as a conventional computer data backup device in case of a power failure, a laptop computer having a resuming function and operating using an internal power supply supplies backup power (VBK), backup RAM supplied with the backup power, and backup power. It has a receiving video RAM, regardless of whether the resume function is on or off, when the voltage level of the power supply falls below a certain level, the data currently being processed is backed up by the memory (IC memory; backup RAM and There is a device that temporarily stores the backup video RAM, and continues the information stored in the memory from the previous state when the power supply size rises above a certain size.

However, such a conventional apparatus has a disadvantage in that the backup information of the backup means (RAM), which is a semiconductor memory, is lost when the backup power supply capacity is limited because the supply time of the backup power is limited.

That is, there is a limitation because power must be supplied continuously after backup, and there is usually a limit on the capacity of the semiconductor memory (usually in the range of several megabytes in the case of a personal computer). It becomes small.

According to the present invention, the backup power supply is made only while the backup operation is in progress, and once the backup is completed, the backup power supply is controlled so that no further backup power supply is required to overcome the above limitations and disadvantages.

In addition, since the conventional apparatus is applied to a Rapton computer that operates using an internal power source, a computer system that operates on an external power source such as a desktop computer only when the internal power source is abnormal (voltage drop due to the discharge of the battery in a portable computer). In the event of a power outage, there are restrictions that cannot be adapted and coped with.

The present invention is applied to a computer system operating with an external power source, and when the external power supply is unexpectedly outage, the data is backed up to the hard disk, and when the power failure is restored, the backup data is restored to continue from the previous state.

That is, the present invention includes a means for detecting a power failure, and a means for performing automatic backup and recovery of information according to the result of the power failure detection. In addition, you can prevent the loss of information that was being processed, and if you do not use your computer for more than a certain period of time, suspend mode will be executed. The purpose of the present invention is to provide an automatic backup and recovery apparatus for a computer system and a procedure for controlling the same, which allow a high power saving, by stopping power of the remaining power circuits while leaving only power.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation according to the device of the present invention to achieve the above object.

First, Figure 1 shows the operating system of the present invention to achieve the above object will be described from the operating system of the present invention with reference to the following.

When the commercial AC power (AC 110V / 220V) is input, it determines the current input power supply voltage and selects the appropriate power among the determined voltage to the power supply of the computer and supplies it through the interface.

In this way, the powered computer system loads its operating system (OS) and executes the corresponding operation.

On the other hand, as the power is supplied as described above, the automatic backup and recovery device of the present invention also performs the operation.

In other words, it detects power input currently to determine whether there is a power failure, and also monitors the access time interval of the computer system to determine whether the user has left the computer without operating for a predetermined time.

As a result of the determination, when the AC power is turned off due to a power failure, the automatic backup and recovery device at this moment supplies emergency power for backing up the computer system and supplies backup instructions to the computer system.

Accordingly, the computer system stores the contents of each memory (BASE MEMORY, EXTENDED MEMORY, EXPANDED MEMORY, VIDEO MEMORY), the contents of the CPU interrupt INTERRUPTS, and the CPU register REGISTER on the hard disk.

As such, when the computer system completes the backup of the information currently being processed on the hard disk, the automatic backup and recovery device is supplied with the completed information.

Receiving backup completion information, the automatic backup and recovery unit also shuts down its backup power.

In this way, when the power is supplied again after the backup is completed, the automatic backup and recovery device supplies the system to the previous state to perform the above-described power detection, selective switching, and recover the backed up information from the computer system.

Accordingly, the computer system restores the information stored in the hard disk to the state before the commercial AC power off.

On the other hand, as described above, if the user has left the computer system unused for a predetermined time or more as a result of the access time search in the automatic backup and recovery device, a suspend command SUSPEND COMMAND is supplied to the computer system.

The computer system that receives the suspend command from the automatic backup and recovery unit controls the display of the monitor in the suspend mode (BLACK) state, and then automatically returns to the normal state when the user presses any key on the keyboard and displays the monitor display normally. Returns to the state.

As described above, the backup and recovery power saving control of information by the automatic backup and recovery device of the present invention will be described in more detail with reference to the configuration of the automatic backup and recovery device shown in FIG.

First, referring to Figure 2, the automatic backup and recovery apparatus of the computer system of the present invention, if the voltage level of the power supply falls below a certain magnitude, regardless of whether the resuming function is turned on or off in a retop computer having a resuming function. Temporarily stores data currently being processed in a memory (IC memory; backup RAM) that is supplied with backup power, and when the voltage level rises above a certain level, the information stored in the memory can be continued from the previous state. A computer device comprising: a battery 7 for temporarily supplying power of a computer system for backup of data in a power failure or power saving mode; In order to maintain the voltage level of the battery 7 in a state suitable for supplying backup power at all times, the battery control unit detects the battery output and charges it in advance when external power is supplied when the voltage level is insufficient. 8, 9, 10); When the external power supply is out of power, the output power of the battery 7 is input and the input power is converted into appropriate voltages (+ 5V, K-5V, + 12V, -2V, etc.) of each part of the computer system required for data backup. Power supply means (12, 13, 14, 14A, 14B, 15) for supplying by means of; When external power is normally supplied, the above charging control means (8, 9, 10) are controlled to charge the battery (7), and the power failure or keyboard access time information is input from the computer system, and the power failure Or when it is determined that the device enters the power saving mode, the power supply means 12, 13, 14, 14A, 1B, and 15 are operated to temporarily supply the battery 7 to the computer system through the power supply means. The computer system performs a backup of the data to the hard disk, and when the backup is completed, the power supply means cuts off all power supply by all the power supply means. When external power is normally input, the computer system causes the computer system to An automatic backup and recovery apparatus for a computer system, characterized by comprising control means (2, 2A, 1) for performing data recovery.

Referring to FIG. 2, the configuration of the backup and recovery device of the present invention will be described in more detail. For the communication with the computer, the power off signal, keyboard access time, suspend command, backup command, recovery command, etc. A slot 1, a control unit 2 which performs backup and recovery of information, control of a suspend mode, power selection and power saving control of its own power while communicating with a computer through the slot 1, and the control unit ( 2), a switch unit 2A for selecting an interrupt and allocation address for communication between the control unit 2 and a computer, and a selection driving unit 3 for driving control of power selection under the control of the control unit 2; And a power supply unit 4 for supplying the commercial AC power selected by the control of the selection driver 3 to the system, and the power supply unit 4 under the control of the selection driver 3 to control 110 volts or 220 volts. Of A power selection unit 5 for selecting an input commercial AC power source, a voltage detection unit 6 for sensing the input corresponding AC power supply voltage, and supplying a detection result to the control unit 2; The battery 7 for supplying, the battery power sensing unit 8 for sensing the power level of the battery 7 and supplying it to the control unit 2, and the battery 7 under the control of the control unit 2. The charging unit 9 for charging, the charge monitor unit 10 for sensing the battery charge power level and supplying the control unit 2, and the sensing result of the voltage detection unit 6 are supplied to the control unit 2. A 5 volt power supply 1 (11), a 5 volt power supply 2 (12) for supplying 5 volt power to the power detection unit (8), and the battery under the shutdown control of the control unit (2) Rectifies the output of the computer and supplies a 5 volt power supply 3 (13) and the battery (7) output switching Switching and rectifying the switching 14 and the constant voltage 14A and 14B for supplying the -12 volt and -5 volt power of the computer and the output of the switching 14 under the shutdown control of the control unit 2. It is composed of a switching power supply unit 15 for supplying a 12-volt power supply of the computer, and reference numerals 16, 17, 18, and 19 in the figure are rectifiers.

The automatic backup and recovery method of the present invention by the above apparatus, regardless of whether the resume function is turned on or off in a laptop computer having a resume function, data that is currently being processed when the voltage level of the power supply drops below a certain level is used. In a backup control method of a computer that temporarily stores in a memory (IC memory; backup RAM) supplied with backup power, and stores the information in a memory when the voltage level rises above a certain level, thereby continuing information from the previous state. When the external power is input, the control means (1, 2, 2A) controls the charge control means (8, 9, 10) to detect the output voltage level of the backup battery (7) to determine whether or not the charge, A first step of charging the battery 7 when the determination indicates that charging is required; Subsequent to the first process, the keyboard access time interval of the computer is detected, and if there is no access of the computer keyboard for a predetermined reference time or more, the computer is controlled in the suspend mode, which is a power saving mode, and the battery Power supply means (12, 13, 14, 14A, 14B, 15) to supply the backup power to the computer system and store the information currently being processed on the hard disk. 2, 14, 14A, 14B, 15) off; During the entire process, it detects whether the external power is turned off (interruption), and in the case of power failure, the backup power is supplied from the battery 7 to the computer through the power supply means 12, 13, 14, 14A, 14B, 15. A third process of storing the information being processed on the hard disk and then turning off all the power sources 13, 13, 14A, 14B, and 15 when the backup is completed; If any key is pressed during the suspend mode during the second process, the suspend mode is released and the information backed up to the hard disk is restored.If the power failure is restored, the information backed up to the hard disk is restored. The automatic and recovery method of a computer system, characterized in that consisting of a fourth process to make.

The automatic backup and recovery apparatus of the computer system of the present invention configured as described above, the automatic selection of pressure power by the procedure of control thereof, the backup and recovery during power failure, and the power saving control operation will be described with reference to FIGS. 2 and 3. As follows.

When 110 volts or 220 volts of commercial AC power is input, the input power is supplied to the voltage detector, and the power detector 6 detects the level of the input power and outputs the detection result to the controller 2 through the power supply 11. Supplies).

The control unit 2 analyzes the detection result of the voltage sensing unit to determine whether the corresponding AC power currently being input is 110 volts or 220 volts, and according to the determination result, the power selector 5 through the selection driver 3. Control switching.

Accordingly, the power selector 5 supplies the input power directly to the computer through the power supply unit 4 when the input power is 110 volts if the input power is used by the computer system, for example, 110 volts from the computer. For example, if the input power is 220 volts, down to 110 volts and supply it to the computer.

In this way, when the computer is powered on, the computer operates to load (boot) its own operating system, execute the corresponding application using each memory and register, and store the necessary information on the hard disk while the user The predetermined information processing is performed in response to the requirement of, which corresponds to normal computer operation.

Then, the computer supplies the access time interval information of the keyboard and the power-off information (outage information) and the like to the controller 2 through the slot 1.

On the other hand, when the power supply is selected and supplied as described above, the automatic backup device of the computer system of the present invention also operates, so that the control unit 2 first determines whether the output power level of the battery 7 is sufficient for the backup operation. If it is at a low level, charge it.

That is, the output power of the battery 7 is input to the battery power detection unit 8, the battery power detection unit 8 retrieves the input battery 7 output level, and the search results to the control unit 2 Supply.

The controller 2 analyzes the input battery 7 power level result to determine whether to charge.

If the power level of the battery 7 is less than or equal to a predetermined reference value, the controller 2 operates the charging unit 9, and accordingly, the charging unit 9 operates to supply charging power to the battery 7 through the rectifier 16. As a result, the battery 7 starts to be charged.

The charge level of the battery 7 receives the output of the charge unit 9 from the charge monitor unit 10, detects the charge level, supplies the detection result to the control unit 2, and the control unit 2 inputs the input. If the charge level of the current battery 7 is lower than the level suitable for backup, the charging unit 9 continues to operate and the charging is continued. When the charge level becomes a level suitable for backup, the charging unit 9 Abort the operation.

In this way, charging of the battery 7 is always performed, so that the backup power is always prepared.

In preparation for supply of backup power, the control unit 2 receives keyboard access time information and power-off (outage) information input from the computer system through the slot 1, and performs backup by power failure and backup by suspend progress. Do the following.

First, the backup control according to the progress of the suspend mode will be described.

The controller 2 determines the access time information from the computer input to the slot 1 as described above to determine whether the predetermined reference time determined by the user has been left without accessing the computer. do.

As a result of the determination, when the time for which the computer is not accessed has elapsed for a predetermined first reference time (for example, 2 minutes) or more, the control unit 2 supplies a suspend command to the computer through the slot 1, and accordingly, the computer enters the suspend mode. Enter to control the monitor black and continue to monitor access time.

As described above, when the monitor is operated in the suspend mode, the computer system waits in the power saving mode until the user operates any key on the keyboard and presses any key to release the suspend mode under the control of the control unit 2. To display the monitor normally.

However, if the time for not accessing the computer after the first reference time elapses more than a predetermined reference time (for example, 5 minutes), the controller 2 determines that the user has left the computer without using it. The select driver 3 controls the power selector 5 and the power supply 4 to cut off the input of commercial AC power, which is an external power source.

This is one feature of the present invention, but the conventional computer system performs only to the suspend mode, but the present invention is a further enhanced function of the suspend mode, and when the suspend mode continues for a long time, it is determined that the user has left the computer system, In this case, by shutting off the power supply itself from the power supply unit 4 to the computer system, a power saving operation is performed, and a backup operation is performed to prevent data loss due to the self-blocking of the computer power supply.

That is, when the power source of the computer is cut off, the computer enters a state in which power is off. Therefore, the power supply is supplied to the controller 2 through the slot 1.

As described above, when the power-off information is input, the control unit 2 supplies a backup command to the computer through the slot 1 while supplying powers necessary for each part of the computer circuit from the battery 7.

That is, when the external power supply (ACV) is cut off as described above, the power supply Vbatt, which is charged in advance to the battery 7 and outputted, is supplied as the operating power of the 5 volt power supply 2 (12) and the battery power detection unit The operating power of + 5V is supplied to (8), and the output Vbatt of the battery 7 is also supplied to the 5-volt power supply 1 (11) through the rectifier 18 as operating power, so that the controller 2 In addition to supplying the power (Vdd) that can continue to operate, the output (Vbatt) of the battery (7) is also supplied to the 5-volt power supply 3 (13), so that the power supply 13 is 5 volts required by the computer Let the power supply.

In addition, the output of the battery 7 is also supplied to the switching unit 14, the switching unit 14 switches the input power (Vbatt) to the -12 volts power and -5 volts power required by the computer, respectively, the constant voltage It is supplied through the portions 14A and 14B.

In addition, the output of the battery 7 is also supplied to the switching power supply unit 15, the switching power supply unit 15 supplies a +12 volt power required for the circuit operation by switching and rectifying the input power (Vbatt).

Therefore, even when the external power supply (ACV) is turned off, the computer system and the backup and recovery device temporarily store + 5V from each power supply 11, 12, 13, constant voltage section 14A, 14B, and switching power supply section 15, respectively. -5V, + 12V, -12V, etc., to supply the necessary power.

Therefore, the computer system can operate a program required for driving the hard disk and for backing up the information currently being processed.

This is a feature of the present invention, which removes the limitations of conventional devices that simply back up data to a semiconductor memory (RAM) and continue to supply backup power to that semiconductor memory.

In this way, the backup power supply from the automatic backup device of the computer system and the computer receiving the backup command store the information processed in each memory and CPU on the hard disk.

When the storage is completed, the computer informs the control unit 2 of the completion of the storage through the slot 1, so that the control unit 2 supplies a 5-volt power supply 3 13, the charge monitor unit 10 and the switching power supply unit 15. By supplying the shutdown signal (SHUT DOWN) to shut down each power supply unit (10, 13, 15, etc.), it also turns off the automatic backup device itself of the computer system, thereby maintaining a power saving state that consumes minimal power. do.

This is a feature of the present invention, which allows the computer system as well as its own power to be turned off after the backup is completed, and this saves backup data to the hard disk. The features and advantages of keeping the backup data intact are as much as possible.

On the other hand, if the computer power is normally input in the power-off state after the backup is completed as described above (that is, when the user turns on the computer), the initial operation-selection of power supply, charge monitoring, charge control, etc. Of course, the control unit 2 knows that the backup information exists since the recovery after the power failure, and supplies the recovery command of the backup information to the computer through the slot 1 to allow the computer to recover the information backed up to the hard disk. Let them do it.

On the other hand, even when a power failure occurs while the computer is operating, such backup and backup data recovery control after the power failure recovery are performed as follows.

If the computer power is cut off due to an unexpected power failure while the computer and the automatic backup device of the computer system are in operation, the computer supplies the control unit 2 with the information that the power is turned off through the slot 1.

As described above, when the power-off information is input to the control unit 2, the control unit 2 supplies a backup command to the computer through the slot 1 while supplying powers necessary for each part of the computer circuit from the battery 7.

That is, as described above, the power Vbatt charged and output from the battery 7 is supplied to the operating power of the 5-volt power supply 2 (12), and the 5-volt power supply 1 (11) through the rectifier 19. In addition, it is supplied to the operating power supply, and is also supplied to the 5-volt power supply 3 (13) to supply the 5-volt power to the computer.

In addition, the output Vbatt of the battery 7 is also supplied to the switching unit 14, and the switching unit 4 switches the input power and supplies -12 volt power and 15 volt power required for the computer to each of the constant voltage unit. It is supplied through 14A and 14B.

In addition, the output Vbatt of the battery 7 is also supplied to the switching power supply unit 15, and the switching power supply unit 15 supplies +12 volt power required for circuit operation by switching rectifying the input power supply.

Therefore, even when the external power supply (ACV) is turned off (stopped), the computer system and the backup and recovery device temporarily retain the respective power supplies 11, 12, 13, constant voltage unit 14A, 14B, and switching power supply unit 15. It receives the necessary power, such as + 5V, -5V, + 12V, and -12V.

Therefore, the computer system can operate a program required for driving the hard disk and for backing up the information currently being processed.

In this way, the backup power supply from the automatic backup device of the computer system and the computer receiving the backup command store the information processed in each memory and CPU on the hard disk.

When the storage is completed, the computer informs the control unit 2 of the completion of the storage through the slot 1, so that the control unit 2 supplies a 5-volt power supply 3 13, the charge monitor unit 10 and the switching power supply unit 15. By shutting down each power supply unit by shutting down the power supply, it also turns off the automatic backup device itself of the computer system, thus maintaining a power saving state that consumes minimal power.

In this state, when the power of the computer is normally pressurized (electrostatic recovery), the operation from the first operation is performed, and the backup information is determined by the power failure and the storage information is required through the slot (1). A recovery command is supplied to restore the information backed up to the hard disk, and the automatic recovery process of the present invention is terminated.

Thereafter, as described above, a series of processes that lead to determination of input power, power selection, charging control, access time search, determination of main power on / off, backup, and recovery are continuously performed.

As described above, the automatic computer system for backing up and restoring the present invention and the method thereof provide automatic maintenance and management of the battery charge level with the power required for backup in supplying power to the battery. Because the backup data is stored in the hard disk, it is possible to overcome the limitation of backup retention time or the limitation of backup data capacity in keeping the backup data in the semiconductor memory. Even if this occurs, the program and data that were running can be protected to prevent the loss, and once the backup is completed, it can also shut down its power to save power, and the user can turn on the computer while the schedule is on. If left unattended, the display of the monitor is automatically suspended In addition to switching to the mode, after shutting off its own power supply and performing a backup, the power supply is supplied in a state of being cut off as much as possible, which saves power and thus improves the reliability of the device operation. There are effects such as enhancement of function and improvement of quality.

Claims (2)

Regardless of whether the Resum function is turned on or off on a laptop computer with a Resum function, the data currently being processed is stored in a memory (IC memory; backup RAM) supplied with backup power when the voltage level of the supply power drops below a certain level. A computer device that temporarily stores and then continues information stored in memory from a previous state when the voltage level rises above a certain level, wherein the computer system temporarily restores power of the computer system for backup of data in a power failure or power saving mode. In order to ensure that the battery level 7 supplied to the battery and the voltage level of the battery 7 are always maintained with proper injury for supplying backup power, when the battery output is detected and the voltage level is insufficient, the external power supply is normally supplied. Charge control means (8, 9, 10) which are precharged at the time; In case of external power failure, the output power of the battery 7 is inputted, and the input power is converted into appropriate voltages (+ 5V, -5V, + 12V, -12V, etc.) of each part of the computer system necessary for data backup. Power supply means (12, 13, 14, 14A, 14B, 15) for supplying; When the external power is normally supplied, the charging control means 8, 9, and 10 are controlled to charge the battery 7, and the power failure or keyboard access time information is input from the computer system. Or when it is determined that the device enters the power saving mode, the power supply means 12, 13, 14, 14A, 14B, and 15 are operated to temporarily supply the output of the battery 7 to the computer system through the power supply means. The computer system performs a backup of the data to the hard disk, cuts off all power supply by the power supply means when the backup is completed, and causes the computer system to recover data from the hard disk when the external power is normally input. Automatic backup and recovery apparatus for a computer system, characterized in that consisting of control means (2, 2A, 1). Regardless of whether the Resum function is turned on or off in a laptop computer with a Resum function, when the voltage level of the power supply drops below a certain level, the data currently being processed is temporarily stored in a memory (IC memory; backup RAM) supplied with backup power. In the backup control method of a computer that continues to store the information stored in the memory from the previous state when the voltage level rises above a certain size, when the external power is input, the control unit (1, 2, 2A) The charging control means 8, 9, and 10 to sense the output voltage level of the backup battery 7 to determine whether it is charged, and if the level is required to charge, the output voltage of the battery 7 is determined. A first process of sensing a level to determine whether to charge and charging the battery 7 if the level is required to be charged; Subsequently to the first step, the computer detects the keyboard access time interval, and if there is no access of the computer keyboard for more than a predetermined reference time, the computer is controlled in the suspend mode, which is a power saving mode, and the computer is connected to the battery (7). Power supply means (12, 13, 14, 14A, 14B, 15) to supply the backup power to the computer system and save the current processing information to the hard disk, and then backup all the power (12, 13) 2, 14, 14A, 14B, 15) off; During the whole process, the external power is sensed off (outage) during the execution of the whole process, and in case of power failure, the computer backs up through the power supply means (12, 13, 14, 14A, 14B, 15) from the battery (7). A third step of saving power currently being processed while powering on the hard disk, and then turning off all power (12, 13, 14, 14A, 14B, 15) when the backup is completed; If any key is pressed during the suspend mode during the second process, the suspend mode is released and the information backed up to the hard disk is restored.If the power failure is restored after the third process, the information backed up to the hard disk is restored. Automatic backup and recovery device for a computer system, characterized in that consisting of a fourth process.