JPH02139614A - Ac driven personal computer - Google Patents

Abstract

PURPOSE:To prevent turning-off of a power source from being forgotton and to save the trouble to start a program, read in data, set a page again, etc., at the next power-on time by automatically turning off the power source at the time of not using a device and automatically restoring the system state at the time of turning on the power source again. CONSTITUTION:When the absence of key input is detected for a certain time, the power source is automatically turned off; and when the power source is turned on next, the system state just before automatic power-off is restored. The signal from a keyboard interrupt driver 9 and state information of a flag incorporated in a saving program 5 are referred to execute these operations by the processing of a system boot program 6. Thus, turning-off of the power source is prevented from being forgotton and the trouble to start the program, read in data, set a page again, etc., at the next power-on time is saved in an AC driven personal computer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an AC (alternating current power source) driven personal convenience store having a RESUME function (instantaneous reproduction function).

(Prior Art) Conventionally, when the user turns on the power switch of a personal computer, the user turns the power switch off.
The power remained on until it was turned off (F), and the power remained on even when not in use, wasting power. To save power, if you turn off the power while not in use, the next time you use it, you will have to read the data and redo the screen pages and settings to return to the original state. Therefore, it is very troublesome. Also, due to this annoyance, people often forget to turn off the power.

(Problem to be Solved by the Invention) As mentioned above, even if an AC-driven personal computer is automatically turned off when not in use, when the power is turned on again, it remains in the state immediately before being turned off. It could not be returned automatically.

The present invention has been made in view of the above circumstances, and provides a device that automatically turns off the power after a certain period of time when the device is not in use, and when the power is turned on again, automatically returns the state to the state immediately before the power was turned off. The purpose of the present invention is to provide an AC-driven personal computer that can perform the following functions.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes means for detecting that there is no key input for a fixed period of time in an AC-driven personal computer, and is activated by a signal obtained through this means, A means of saving system data such as register contents to a save file, setting a built-in flag to a significant value, and supplying a cutoff signal to the power supply, and a method that is activated when the power is turned on again and performs normal startup processing according to the state of the above flags. Alternatively, the configuration includes means for restoring system data.

(Function) When the AC-driven personal computer of the present invention configured as described above detects that there is no key input for a certain period of time,
It is possible to automatically turn the power off to 0FFL, and when the power is turned on next time, to automatically return to the system state immediately before the power was turned off. This is executed by the system boot program processing with reference to signals from the keyboard interrupt driver and state information of flags built into the saved program.

As a result, AC-driven personal computers are freed from the trouble of forgetting to turn off the power, starting programs, reading data, and resetting pages when the power is turned on next time.

(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.

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

In the figure, reference numeral 1 denotes a power supply device, and the power supply is cut off by a signal from a memory 5 in which a saved program is stored or a signal from a switch (not shown). 2 is a memory in which system data is stored, a CPU register, each L
SI information, V-RAM (video memory), data being processed in memory, etc. are stored. Reference numeral 3 denotes a memory in which save files are stored (hereinafter referred to as save file memory), and data in the system data memory 2 is saved by a save program stored in the memory 5. 4
is a memory in which a setting program is stored, and is used to set an automatic OFF flag built into the save file memory 3. Reference numeral 5 denotes a memory in which a saved program is stored, and after saving the system data stored in the memory 2 to the system data saving area of the save file memory 3 and setting a save flag, it sends a power OFF signal to the power supply unit 1. send.

Reference numeral 6 denotes a memory in which the system boot program is stored, and depending on the contents of the save flag, the system data in the save file memory 3 is restored onto the memory 2, the save flag is cleared, and control is transferred to the system. 7 is a keyboard, and a keyboard interrupt driver 9 is activated for each key input.
Generates an interrupt to. 8 is a timer, which generates an interrupt to the timer interrupt driver 10 every several tens of milliseconds. A keyboard interrupt driver 9 clears the counter 11 in addition to key input processing. 10 is a timer interrupt driver that counts up a counter 11 and starts the storage program 5 when it reaches a certain value. A counter 11 is counted up by the timer interrupt driver 10 and is used to confirm that no key input has been made for a certain period of time. In addition, although the memory is shown divided into blocks in Figure 1,
In reality, the area is divided and allocated in the main memory.

FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 are flowcharts showing the operating procedures of each program shown in FIG. 1, respectively.

FIG. 2 is a flowchart showing the operating procedure of the setting program stored in the memory 4. As shown in FIG. In the figure, 21 is
This is the step of checking for an automatic off mode request, in which it is checked whether the data input to the setting program is data for automatic off mode, and branches accordingly. 2
Step 2 is a step of setting automatic off mode presence, in which an automatic off mode flag is set for the save file memory 3, and a save presence/absence flag is cleared. 23 is a step of setting no automatic off mode, and clears the automatic off mode flag in the storage file memory 3.

FIG. 3 is a flowchart showing the operating procedure of the saved program stored in the memory 5. In the figure, 31 is a step for checking the automatic off mode, in which the state of the automatic off flag in the storage file memory 3 is checked. 32 is a step for saving system data;
System data such as CPU registers, information on each LSI, V-RAM, memory, etc. are saved in the save file memory 3. 33 is a step of setting a save flag, in which the save flag is set in the save file memory 3 to indicate that system data is saved. 34 is a step of outputting a power off signal, in which the power off signal is output to the power supply device l.

FIG. 4 is a flowchart showing the operating procedure of the system boot program stored in the memory 6. In the figure, 41 is a step for checking the automatic OFF mode, in which the state of the automatic OFF flag in the storage file memory 3 is checked.

42 is a step of checking the save flag;
The save flag set in the save file memory 3 is checked, and if it is cleared, the process branches to normal startup processing. 43 is a step for restoring system data, and from the save file 3, each LSI+7) information,
Restore system data such as V-RAM and memory to the original location. 44 is a step for clearing the save flag, and in case the system is started without saving the system data, the save flag is cleared for the save file memory 3. 45 is a step for transferring control to the system, in which the contents of the CPU register are restored from the save file memory 3, and control is transferred to the program counter.

FIG. 5 is a flowchart showing the operating procedure of the keyboard interrupt driver 9. In the figure, 51 is a step for clearing the counter, which means that a key input has been made within a fixed time.

52 is a step for performing a normal keyboard interrupt;
Processes the original functions of the keyboard interrupt driver 9.

FIG. 6 is a flowchart showing the operation procedure of the timer interrupt driver 10. In the figure, 61 is a step for checking automatic OFF, and the state of the automatic OFF flag in the storage file memory 3 is checked. 62 is a step for incrementing a counter, in order to check that a certain period of time has elapsed. 63 is a step of checking whether a certain period of time has elapsed, and it is checked whether the counter has reached a certain value. 64 is a step for activating the stored program in the memory 5. 65 is a step for performing normal timer interrupt processing, in which the original function of the timer interrupt driver 10 is processed.

The operation of the embodiment of the present invention shown in FIG. 1 will be described below with reference to FIGS. 2 to 6.

First, after starting up normally, the setting program 4 of the memory 4 sets the save file memory 3 to an automatic OFF mode. The timer interrupt driver 10 is activated by a timer every several tens of milliseconds, and in automatic OFF mode, it increments the counter 11 and repeats this until the value reaches a constant value. If there is a key input during this time, the keyboard interrupt driver 9 is activated by the keyboard 7,
In order to clear the counter 11, the counter 11 will not reach a certain value when using the key input, so it will automatically turn off.
FF will not be used.

When the key input is interrupted and the counter 11 reaches a certain value, the timer interrupt driver 10 starts the save program in the memory 5. Based on the contents programmed in this save program, the CPU saves system data (CPU registers, information on each LSI, V-RAM, memory, etc.) to the save file memory 5, and sets a save flag. After setting the power OFF signal as
The power supply device 1 turns off the power and ends the operation.

Next, when the power is turned on, the system boot program 6 is started after testing and initialization of each LSI, memory, etc. is completed. If the system is in automatic OFF mode and there is saved data, restore the system data.

At this time, the system boot program in the memory 6 must be protected from being destroyed by restoration.

Then, in case the system is started up without saving the system data next time, the save flag is set to "none" and control is transferred to the program counter immediately before automatic OFF based on the CPU register to be restored. returns to the state immediately before auto-off.

[Effects of the Invention] As explained above, according to the present invention, an AC-driven personal computer can automatically turn off the power when the device is not in use.
It becomes possible to automatically restore the system state when restarting the system. Therefore, the operator is freed from the trouble of forgetting to turn off the power, and from having to start programs, read data, and set pages again when the power is turned off.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing an embodiment of the present invention, Figures 2 to 6
Each figure is a flowchart for explaining the operation of the embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of the setting program, FIG. 3 is a flowchart for explaining the operation of the storage program, and FIG. 5 is a flowchart for explaining the operation of the system boot program, FIG. 5 is a flowchart for explaining the operation of the keyboard interrupt driver, and FIG. 6 is a flowchart for explaining the operation of the timer interrupt driver. DESCRIPTION OF SYMBOLS 1... Power supply device, 2... Memory for storing system data, 3... Memory for saved files, 4... Memory for storing setting programs, 5... Memory for storing saved programs, 6 ...Memory for storing the system boot program, 9.Keyboard interrupt driver 10.Timer interrupt driver. Applicant's Representative Patent Attorney Takehiko Suzue Figure 2 Figure 1 Figure 3 Figure Figure Figure

Claims (1)

[Claims] A that operates with operating power generated by an external AC power source
In a C-driven personal computer, there is a means for detecting that there is no key input for a fixed period of time, a signal obtained through this means is activated, the system data including register contents is saved to a save file, and a built-in flag is activated. means for supplying a cutoff signal to the power supply unit by setting the value to a significant value;
An AC characterized in that it is activated when the power is turned on again, and includes means for executing normal startup processing or processing for restoring system data according to the state of the flag.
Driven personal computer.