JPH054227U - Information processing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] An AC-powered information processing device is equipped with a resume function to improve the function of the information processing device. [Structure] After the main switch is turned off, an NMI command is output from the resume control circuit to the arithmetic unit, and the arithmetic data stored in the register of the arithmetic unit is saved in the memory. After saving, by backing up the memory with a battery, the operation data immediately before the main switch is turned off is retained in the memory.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an information processing device such as a personal computer or a word processor, and more particularly to an AC driven information processing device having a resume function.

[0002]

[Prior Art]

 In recent years, with regard to information processing equipment such as personal computers and Japanese word processors, semiconductor components, especially semiconductor memory, have been highly integrated, and mounting components have been highly densely mounted. ing.

Among such information processing devices, in a battery-driven device, a built-in battery is used to hold the operation data immediately before the main switch is turned off, and when the main switch is turned on, 2. Description of the Related Art Devices having a so-called resume function that returns the display of an information processing device to the state immediately before the main switch is turned off are becoming popular.

[0004]

[Problems to be solved by the device]

 However, with the spread of battery-powered information processing devices having a resume function, it has been demanded that the AC-powered information processing devices be equipped with the resume function. Therefore, there is a problem that the resume function is not installed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an AC-powered information processing device with a resume function and to improve the function.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention, in an AC-driven information processing device, executes a power supply unit that supplies drive power to each unit in the above information processing device, executes various calculations and controls, and stores the execution data. Control unit that has a register that controls the operation of the main switch and controls the operation unit to save the execution data stored in the register and to command the power supply unit to stop the output of the driving power after saving the data. Section, a memory for storing the execution data stored in the register corresponding to the data saving instruction of the control section, and a battery for outputting the power for driving the memory after the output of the drive voltage of the power supply section is stopped. Is provided.

[0007]

[Action]

 Since the present invention is configured as described above, after the main switch is turned off, the operation data stored in the register of the operation unit is stored in the memory backed up by the battery, so that the operation immediately before the main switch is turned off is calculated. The data is retained in memory. Therefore, when the main switch is turned on, the information processing device returns to the state immediately before the main switch is turned off, and an AC driven information processing device having a so-called resume function is realized.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a register including a CPU, a ROM storing various programs, and a RAM storing various data being calculated. The arithmetic unit is composed of various arithmetic operations and controls according to the program stored in the ROM, and stores the data during the arithmetic operation in the register. Further, 2 is composed of a keyboard for inputting data to the arithmetic unit 1, a display device and a printing device for visually outputting the arithmetic result of the arithmetic unit 1, and a magnetic disk device and a floppy disk device for storing programs and data. The peripheral unit exchanges data with operation unit 1. Driving power of a voltage Vcc is supplied from the power supply circuit 3 to the arithmetic unit 1 and the peripheral unit 2.

When the main switch 5 is turned off, the reference numeral 4 outputs an NMI (Non Maskable Interrupt) command, which is the highest priority interrupt instruction, to the arithmetic unit 1 and is stored in the register of the arithmetic unit 1 and displayed on the display unit of the peripheral unit 2. The operation data displayed on the memory 6 is saved in the memory 6 composed of SRAM, for example, and after the main switch 5 is turned off, the operation data is retained in the memory 6 by the resume control circuit. When the save completion signal indicating that the save to the is completed is received, the output stop signal for stopping the power output from the power supply circuit 3 is output to the power supply circuit 3. When the main switch 5 is turned on, the calculation data saved in the memory 6 is re-stored in the register of the calculation unit 1 contrary to the above.

The power supply circuit 3 outputs electric power of the voltage Vcc and electric power for driving the memory 6. That is, the power for driving the memory 6 is supplied to the memory 6 after being stabilized by the RAMV circuit 7 via the diode D1. On the other hand, the electric power supplied to the memory 6 is also supplied to the battery 9 as electric power for charging the battery 9 composed of a secondary battery through the resistor 8 which stabilizes the charging current. After the main switch 4 is turned off and the output of the power supply circuit 3 is stopped, the battery 9 drives the memory 6 via the diode D2 and the RAMV circuit 7 and holds the operation data stored in the memory 6.

Next, the operation of one embodiment of the present invention having the above configuration will be described.

First, when the main switch 5 is turned off, the resume control circuit 4 outputs an NMI command to the arithmetic unit 1, and the arithmetic data stored in the register of the arithmetic unit 1 is saved and stored in the memory 6. .. When the saving of the operation data to the memory 6 is completed, the save completion signal is output from the operation unit 1 to the resume control circuit 4, and the resume control circuit 4 stops the output of the power supply circuit 3 based on this save completion signal. Output the output stop signal to the power supply circuit 3. When the output stop signal is output to the power supply circuit 3, the output of the electric power for driving each unit output from the power supply circuit 3 is stopped.

The memory 6 is driven by the electric power output from the power supply circuit 3 at the time of saving the operation data, but when the output of the power supply circuit 3 is stopped, the battery 9 charged by the output of the power supply circuit 3 is discharged. The operation data stored in the memory 6 is retained in the memory 6 even after the main switch 5 is turned off.

On the other hand, when the main switch 5 is turned on, drive power including Vcc is output from the power supply circuit 3. Contrary to the above operation, the resume control circuit 4 issues an NMI command to recall the computation data saved in the memory 6 to the register, which is the reverse of the above operation. It is displayed on the second display device. In addition, electric power for driving each unit is output from the power supply circuit 3, and the battery 9 is charged by a part of the electric power.

It should be noted that the present invention is not limited to the above embodiments, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

[0016]

[Effect of the device]

 As described above in detail, according to the information processing device of the present invention, after the main switch is turned off, the operation data stored in the register of the operation unit is stored in the memory backed up by the battery, thereby The calculated data immediately before the switch is turned off can be retained in memory, and when the main switch is turned on, the information processing device returns to the state immediately before the main switch was turned off, improving the functionality of the AC-driven information processing device. Can be planned.

[Brief description of drawings]

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

[Explanation of symbols]

 1 ... Arithmetic section 3 ... Power supply circuit (power supply section) 4 ... Resume control circuit (control section) 5 ... Main switch 6 ... Memory 9 ... Battery

Claims (1)

[Claims for utility model registration] 1. In an AC-driven information processing apparatus, a power supply section for supplying drive power to each section in the information processing apparatus,
An arithmetic unit having a register for executing various arithmetic operations and control and storing the arithmetic data, and an instruction to save the arithmetic data stored in the register by detecting the OFF of the main switch, and after saving the data A control unit for instructing the power supply unit to stop the output of the drive power, a memory for storing the operation data stored in the register corresponding to the data save command of the control unit, and the output unit after the output of the drive voltage of the power supply unit is stopped. An information processing device, comprising: a battery that outputs electric power for driving a memory.