JPH07122839B2 - Data processing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a data processing device.

[Prior Art] In a conventional data terminal device, there is only one method of executing a program when the power is turned on.

[Problems to be Solved by the Invention] Therefore, when the data terminal device is used and the power is turned off in the middle of work (work), the work must be restarted from the beginning. Alternatively, the business program must save the progress of the business and recommend the program based on the information saved when the power is turned on and the program is executed to continue the business. Therefore, there are drawbacks that the operation becomes complicated and the program becomes complicated.

An object of the present invention is to eliminate the above-mentioned drawbacks, and when a power-off is instructed, determine whether to continue execution of the program being executed at the next power-on or re-execute from the beginning, and It is an object of the present invention to provide a data processing device capable of executing the processing of the program based on the judgment result at the time of re-input.

[Means for Solving Problems] In order to achieve the above object, the present invention provides a storage means capable of backing up, an execution means for executing a program, an instruction means for instructing on / off of a power source, and When the power-off is instructed by the instructing means, a judging means for judging whether the program executed by the executing means is continuously executed or re-executed at the next power-on, and a judgment result by the judging means are shown. Storage means for storing information in the storage means, power-off means for turning off the power after the storage by the storage means is finished, and information stored in the storage means when power-on is instructed by the instructing means And a control means for controlling the execution means so as to continuously execute or re-execute the program, based on the judgment result shown in FIG.

[Operation] According to the present invention, when the power-off is instructed by the instructing means, it is judged whether the program being executed is continuously executed or re-executed at the next power-on, and information indicating the judgment result is displayed. Stored in a storage means that can be backed up, turn off the power after the end of the storage, and continue to execute the program based on the judgment result indicated by the information stored in the storage means when the instruction means instructs the power on. Or try again.

[Examples] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a configuration of an embodiment of a data terminal device according to the present invention, in which 1 is a CPU, 2 is a main memory, 3 is a removable memory pack, 4 is a data terminal device, and FIG. A system ROM in which the control program shown in FIG. 4 is written, 5 is a keyboard for inputting data, 6 is a display for displaying processing information, 7 is connected to a battery 8 as a power source, and controls the power source. This is a power supply control circuit. In this embodiment, at least the CPU 1 and the main memory 2 are backed up by the battery 8. Further, in the case of this example, the power supply control circuit 7 does not directly turn off the power supply (excluding backup) of the device when the power supply is turned off, but inputs an interrupt signal to the CPU 1 to notify the application program, and when the power supply is turned on,
A circuit that turns on the power (excluding backup),
FIG. 2 shows an example of the details. In FIG. 2, 8 is a battery as a power source, 9 is a power switch, 10 is an input terminal of a power control signal from the CPU 1, 11 is a transistor forming a one-shot pulse circuit, 12 and 13 are flip-flops, and 14 is a voltage. A detector, 15 is a transistor for turning on / off the power supply, 16 is a power supply voltage (Vcc) output terminal, and 17 is an output terminal of an interrupt signal to the CPU 1.

According to the above configuration, by pressing the power switch 9, the one-shot pulse circuit 11 outputs an interrupt signal and one pulse is input to the clock (CK) input terminal of the flip-flop 12. The output terminal 17 of the interrupt signal is connected to the interrupt input terminal of the CPU 1, and the CPU 1 can know that the power switch 9 is pushed.

The CPU 1 operates as follows when the power switch 9 is pressed. That is, the power control signal from the CPU 1 (that is, the input terminal 10) is normally pulled up (when the device power is off), and when the power switch 9 is pressed at this time, the CK input of the flip-flop 12 is input. The pulse from the one-shot pulse circuit 11 is input to the terminal, the Q terminal thereof is turned on, the transistor 15 is turned on, and the voltage of the battery 8 appears at the output terminal 16 (that is, the power of the device is turned on). Furthermore, when the power switch 9 is pressed from the power-on state, the power control signal (input terminal 10) from the CPU 1 is executed according to the program described later.
Becomes low, the Q terminal of the flip-flop 13 becomes low, and as a result, the Q terminal of the flip-flop 12 turns off, the transistor 15 turns off, the output terminal 16 turns off, and the device power is cut off.

FIG. 3 shows the flow of the above-mentioned control program when the power of the apparatus is turned off.

When the power switch 9 is pressed while the device is operating, the CPU 1 causes the control program to execute the procedure for turning off the power of the data terminal device when the application program causes the application program to change from the current state at the next power-on. Specify whether to continue or restart from the beginning.

As shown in FIG. 2, when the power switch 9 is pressed during the operation of the apparatus, it is judged whether the application program is continued or re-executed (step 18).
Go to 0 and save CPU1 information and device status required for continuation in the memory (main memory). Then, in step 21, the flag F1 instructing to continue the application program is set in the main memory at the next power-on. Next, in step 22, a low signal is input to the input terminal 10 of the power control circuit 7 as a power control signal to turn off the power to the apparatus.

If the application program is re-executed in step 18, proceed to step 23 and re-execute flag F2 in the main memory.
And set to step 22.

FIG. 4 shows a flow chart of the control program when the power source of the apparatus is turned on. When the power switch 9 is pressed while the device power is off, the CPU1 and device (system RO
M4, etc.) are in the reset state, so the necessary processing is performed (step 24). Then, in step 25, the state of the flag F1 in the main memory set at the time of the previous power-off is checked to determine whether the application program is continuously executed or re-executed. If it is continued execution, proceed to steps 26 and 27 to return the state of the device and CPU1 to the state when the power was turned off, and then in step 28,
The application program continues from the state when the power was turned off. If the instruction is not the continuous execution instruction in step 25, the process proceeds to step 29 to reset the program management state, and the process proceeds to step 30 to execute the application program from the beginning.

The power switch 9 may have an ON switch and an OFF switch independent.

Further, in this example, when the control program is requested to turn off the power, continuous execution or re-execution of the application program at the next power-on is specified, but this may be specified at another time.

[Effects of the Invention] As described above, according to the present invention, when the power-off is instructed, it is determined whether the program being executed is continuously executed at the next power-on or re-executed from the beginning. Then
By storing the information indicating the determination result in the storage means that can be backed up, when the power is turned on again, appropriate program processing can be executed very easily based on the determination result indicated by the information stored in the storage means. The effect is that you can.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a data terminal device according to the present invention, FIG. 2 is a circuit diagram showing an example of a power supply control circuit, and FIG. 3 shows a control flow when a power supply of a control program according to the present invention is cut off. Flowchart, FIG. 4 is a flowchart showing a control flow when the power of the control program is turned on. 1 ... CPU, 2 ... Main memory in the data terminal device body, 3 ... Memory park that can be attached to and detached from the data terminal device,
4 ... System ROM where the control program is placed, 5 ...
Keyboard, 6 ... Display, 7 ... Power control circuit, 8 ... Battery, 9 ... Power ON / OFF switch, 10 ... Power control signal input terminal, 11 ... Part of one-shot pulse generation circuit , 12,13 ...... Flip-flop, 14 ...... Voltage detector, 15 ...... Power ON / OFF transistor, 16 ...... Power supply voltage (Vcc) output end, 17 ...... Interrupt signal output end .

Claims (1)

[Claims] 1. A storage means capable of backing up, an executing means for executing a program, an instructing means for instructing to turn on / off a power source, and an executing means for instructing to turn off the power by the instructing means. Determination means for determining whether to continue or re-execute the program being executed at the next power-on, storage means for storing information indicating the determination result by the determination means in the storage means, and the storage means Power-off means for turning off the power after the storage is completed, and when the power-on is instructed by the instructing means, the program is continuously executed or re-executed based on the judgment result indicated by the information stored in the storage means. And a control unit that controls the execution unit to execute the data processing device.