JPH0253804B2 - - Google Patents

Description

Detailed Description of the Invention (i) Technical Field of the Invention The present invention relates to a data processing method having a central processing unit, a plurality of memory devices, a timer that is a clock that keeps track of the current time that can be accessed by the central processing unit, and peripheral devices. Regarding the system.

(ii) Technical background When performing automatic operation in a data processing system consisting of a central processing unit, multiple memory devices, a timer that is a clock that keeps track of the current time that can be accessed from the central processing unit, and peripheral devices, An external automatic operation control device is provided, and a signal from the automatic operation control device starts power supply to all devices in the data processing system, and when the data processing system is not required to operate, the automatic operation control The device was powering down the entire system.

Therefore, it was possible to save energy, extend the life of the hardware, and ensure safety at night.

(iii) Prior art and problems Figure 1 is a diagram of a data processing system equipped with a conventional automatic driving control device.

In the figure, 1 is a memory device, 2 is a central processing unit, 3 is an input/output control device, 4 is a power supply device, and 5
is an automatic driving control device.

The memory device 1 , the central processing unit 2 , and the input/output control device 8 are connected to a power supply device 4 , and the power supply device 4 is connected to an automatic operation control device 5 . Further, a power supply is connected to the power supply device 4 and the automatic operation control device 5.

It is now assumed that the power supply device 4 and automatic operation control device 5 are connected to a power source and the data processing system is started. When a power-on signal is sent from the automatic operation control device 5, power is supplied to each of the memory device 1, central processing unit 2, and input/output control device 3 through the power supply device 4.

By the way, when the system is only used for a certain period of time, in consideration of energy conservation, hardware lifespan, and safety, the automatic operation control device 5 turns off all power to the system, and when the time comes, the system is powered on. It was on. However, turning on and off all power supplies to the system in this way has the following problems. In other words, the automatic operation control device 5 must be installed outside the system, and an installation space corresponding to that amount is required. Further, the automatic operation control device 5 is generally expensive. Requires large power capacity.

In addition, the internal control in the automatic driving control device 5 is almost the same as the control in the central processing unit 2, so there is no need to have two duplicate functions in one system. It was hot.

(iv) Purpose of the Invention The purpose of the present invention is to eliminate the waste of the above-mentioned redundant functions, reduce the installation area, and reduce the cost of the device.

(v) Structure of the Invention The present invention provides a data processing system that includes a central processing unit, a plurality of memory devices, a timer that is a clock that keeps track of the current time that can be accessed from the central processing unit, and peripheral devices. a first power supply device that supplies power to a first group consisting of at least one memory device and a timer; and a second group consisting of a memory device other than the memory device and a peripheral device. and a second power supply device that supplies power to the central processing unit, and the central processing unit is configured to at least enable the second power supply device to start supplying power,
Whenever the second power supply device is not supplying power, the central processing unit reads the current time from the timer and compares it with calendar data stored in the memory devices in the first group. This is achieved by repeating the process as long as the comparison results do not match, and when they match, controlling the second power supply device to start supplying power.

(vi) Examples of the invention Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 2 shows an embodiment of the present invention. In the figure, 6
is the second memory device, 7 is the first memory device, 2
1 is a central processing unit similar to that shown in FIG. 1, 8 is a timer that is a clock that keeps track of the current time that can be accessed from the central processing unit 2, and 9 is a peripheral device including a floppy disk control mechanism (FPC) and a disk control mechanism (SFC). ), magnetic tape control mechanism (MTC), input/output control mechanism (IOC), built-in floppy disk (FPD), built-in disk (DISK), and 11 is the second
a power supply device, 10 is a first power supply device, 1
2 is a power supply control device.

The first memory device 7, central processing unit 2, and timer 8 are called a first group, and the first power supply device 10 is called a first group, and the second memory device 6 and peripheral device 9 are called a second group. , the second power supply device 11 is connected to the group, and the first
A power control device 12 is connected to the second power supply devices 10 and 11. Further, the central processing unit 2 is connected to a power supply control device 12 .

Note that a 100V commercial power source is connected to the power supply control device 12. The power supply control device 12 is configured to always supply power to the first power supply device 10 when connected to the commercial power supply, and when connected to the commercial power supply, the first memory device 7 , central processing unit 2, and timer 8 are activated. Further, the power control device 12 is configured to turn on the power to the second power supply device 11 in response to a signal from the central processing unit 2.

Normally, when the system is stopped, the power control device 12 switches to send power only to the first power supply device 10. First memory device 7
Calendar data such as date and time for putting the entire system into a processing state is stored. The timer 8 is a clock that keeps track of the current time. The central processing unit 2 constantly compares the calendar data stored in the first memory device 7 and the current time read out from the timer 8. Then, if the time of the calendar mechanism stored in the memory device 7 and the time of the timer 8 match, the central processing unit 2 sends a signal to the power supply control device 12 due to the coincidence, and the second power supply device 11 The power is turned on. As a result, the second power supply device 11 supplies power to the second group of memory devices 6 and peripheral devices 9, thereby starting up the entire system and performing processing operations.

By the way, when the processing operation is completed, the power is turned off and the system is stopped as in the conventional case, but the time to start the processing is already stored in the memory device 7 at the time of stopping.

Note that the power supply control device 12
The power supplied to the first and second power supply devices 10 and 11 is switched to be supplied only to the first power supply device 10. Then, the above-mentioned operation is repeated, and the central processing unit 2 compares the start time of the second group stored in the memory device 7 with the current time until a predetermined time comes.

From this, the central processing unit 2, the first memory device 7, and the timer 8 are always active, and the memory device 7 has the ability to compare the timer and calendar data.
Since a program is stored that repeats the comparison as long as there is a mismatch and turns on the power when there is a match, the system can be powered on and off without the need for a conventional automatic power control device. It should be noted that the first power supply device 10 may be kept alive without passing through the power control device 12, or the first memory device 7 may be provided in the central processing unit 2. be.

(vii) Effects of the invention As explained in detail above, by dividing the system mechanism and devices into the first group and the second group, and providing separate power supply devices for each group, special The system can be operated automatically without the need for an automatic power supply control device.
Very useful for energy saving measures.

[Brief explanation of the drawing]

FIG. 1 shows a conventional example, and FIG. 2 shows an embodiment of the present invention. In the figure, 1 is a main storage device, 2 is a central processing unit, 3 is an input/output control device, 4 is a power supply device, and 5 is a main storage device.
is an automatic operation control device, 6 is a second main storage device, and 7 is an automatic operation control device.
1 is a first main storage device, 8 is a timer, 15 is a second power supply device, 16 is a first power supply device, 17
is the power control device.

Claims (1)

[Claims] 1. In a data processing system that includes a central processing unit, a plurality of memory devices, a timer that is a clock that keeps track of the current time that can be accessed by the central processing unit, and peripheral devices, the central processing unit, at least one memory device, and the timer A first power supply device that supplies power to a first group configured, and a second power supply device that supplies power to a second group configured of memory devices and peripheral devices other than the memory device. a supply device, and the central processing unit is configured to at least enable the second power supply device to start supplying power, and whenever the second power supply device is not supplying power, the central processing unit The device reads the current time from the timer and repeatedly compares it with the calendar data stored in the memory device in the first group as long as the comparison results do not match, and if they match, the device sends the current time to the second power supply device. A data processing system characterized in that the data processing system is controlled to start supplying power to the computer.