JPH0258111A - Processor with time data correcting function and network system - Google Patents

Abstract

PURPOSE:To prevent time data from being invalidated even when a current time is altered by adding the difference between the current time before alteration and the current time after the alteration to the held time data. CONSTITUTION:When a current time 11 is altered, based on the difference between the current time 11 before the alteration and the current time after the alteration, a processor 10 has a means 13 to update held time data 12. That is, the time data correcting program 13 alters time data 23 before the current time alteration to time data 24 after the current time alteration based on the difference between a current time 22 after the alteration and a current time 21 before the alteration. Thus, even when the current time of the processor is altered, the time data held by the processor is not invalidated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a processing device having a time data correction function.

BACKGROUND ART (1) In conventional processing devices, time data is created based on the current time of the processing device when the time data is created.

C) In conventional network systems, each processing device does not know the current time of other processing devices, and assumes that the current time of all processing devices is the same.

Problems to be Solved by the Invention However, in such a configuration, (1) When the current time of the processing device is changed, the time data held becomes meaningless.

(2) If the current time of the own processing device and the current time of another processing device are not the same, the time data held by the other processing device becomes meaningless when processed by the own processing device.

In view of these points, the present invention is designed to prevent time data from becoming invalid even if the current time is changed, and to prevent time data from becoming invalid even if the current time is changed. It is an object of the present invention to provide a processing device having a time data correction function so that time data on the device can be handled in the same way as time data on its own processing device.

Means for Solving the Problems The present invention provides a processing device having means for updating time data held based on the difference between the current time before the change and the current time after the change when the current time is changed. In a network system in which multiple processing devices are connected, each processing device has a database for storing the difference between the current time of its own processing device and the current time of other processing devices, and a database for storing the difference between the current time of its own processing device and the current time of other processing devices. The network system includes means for correcting the time data using the database when referring to the data.

Effect When the current time is changed, the retained time data is updated based on the difference between the current time before the change and the current time after the change, thereby preventing the retained time data from becoming meaningless. can do.

In addition, when each processing device refers to time data held by other processing devices, it uses a database to store the difference between the current time of its own processing device and the current time of the other processing device. By making corrections to the time data held by multiple processing devices connected to the network, it is possible to make the time data on other processing devices the same as the time data on the own processing device, even if the current times of multiple processing devices connected to the network are not the same. I can handle it.

Embodiment FIG. 1 is a diagram showing an embodiment of the processing apparatus set forth in claim 1. In FIG. 1, 10 is a processing device, 11 is the current time, 12 is time data, and 13 is a time data correction program.

In this embodiment configured as described above, the current time 1
1 is changed, the time data correction program 13 is executed and the time data 12 is updated.

FIG. 2 shows this operation using specific numerical values. In Figure 2, 21 is the current time before the change, 22
is the current time after the change, 23 is the time data before the current time is changed, and 24 is the time data before the current time is changed.

The time data correction program 13 updates the current time 22 after the change.
Based on the difference between the current time 21 and the current time 21 before the change, the time data 23 before the current time change is changed to the time data 24 after the current time change.

FIG. 3 is a diagram showing an embodiment of the network system set forth in claim 2. In Figure 3, 3
0 is the network, 31, 32° 33 is the processing device, 31
1,321,331 is the current time, 312,322.33
2 is time data, 313.323, 333 is a current time request program of another processing device, 314, 324.334 is a current time sending program of its own processing device, 315, 325
335 is a database for storing the difference between the current time of the own processing device and the current time of other processing devices; 316.32
6,336 is a database creation program, 317,3
27.337 is a time data correction program.

In this embodiment configured as described above, the processing device 3
1 sends a request for the current time of the processing device 32, 33 onto the network 30 using the current time request program 313 of the other processing device.

The processing devices 32 and 33 respond to the request from the processing bag f31,
The current time 321.331 of the processing device itself is sent onto the network 30 using the current time sending program 324.334. The processing device 31 uses a data base creation program 316 to receive and receive data sent over the network 30 and create a database 315.

In addition, the processing device 31 uses time data 32 held by other processing devices.
2.332, the current time 3 is corrected using the time data correction program 317.
Even if 11, 321, and 331 are not the same, the time data of the own processing device and the time data of another processing device can be handled in the same way.

FIG. 4 shows a database 31 created on the processing device 31.
The specific contents of 5 are shown below. Further, FIG. 5 shows the function of the time data correction program 317. In FIG. 5, corrected time data 522 is created from the database 315 and time data 322 held by the processing device 32 using the time data correction program 317. When the processing device 31 refers to the time data 322 of the processing device 32, the corrected time data 522 is referred to instead.

FIG. 6 is a diagram showing an embodiment of the network system set forth in claim 3. In Figure 6, 6
0 is the network, 61, 62° 63 is the processing device, 61
1,621.631 is the current time, 612,622.63
2 is a change time sending program, 613,623.633
is a database update program, 614, 624, 63
4 is a database for storing the difference between the current time of the own processing device and the current time of other processing devices.

In this embodiment configured as described above, the processing device 6
When the current time 611 of 1 is changed, the time change data sending program 612 is used to send the difference between the current time before and after the change as data on the network 60, and the processing device 62.63 sends the difference between the current time before and after the change to the database update program 62.
3.633, the databases 624 and 634 are updated based on the data sent by the processing device 61.

FIG. 7 shows this operation using specific numerical values. In FIG. 7, 611 is the current time of the device 61 before the change, 711 is the current time of the device 61 after the change, 720 is the data sent on the network 60, 624 is the database before the current time is changed, and 724 is the current time This is the database after the change. When the current time is changed in the device 61, the time change data sending program 612 sends data 720 onto the network 60.
2, the database update program 623 updates the database 624 before the current time change based on the data 720 on the network 60 to create the database 724 after the current time change.

Effects of the Invention According to the present invention, even if the current time of a processing device is changed, the time data held by the processing device is not invalidated.
Furthermore, even if the current time of each processing device on the network is not the same, it is possible to refer to the time data of other processing devices without considering this fact, which has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the processing device of the present invention, FIG. 2 is an explanatory diagram for explaining its operation, FIG. 3 is a block diagram of an embodiment of the network system of the present invention, and FIG. Figure 5 is an explanatory diagram showing the contents of the database, Figure 5 is an explanatory diagram showing the function of the time data correction program, Figure 6 is a configuration diagram of another embodiment of the network system, and Figure 7 is an explanatory diagram showing its operation. It is. 10... Processing device, 11... Current time, 12...
Time data, 13... Time data correction program. Name of agent Patent attorney Shigetaka Awano and 1 other person Processing device ρ 2/-11 The current Tgf body I 22 --- Mugisara rye twins' flower time O-current & Utan J! +1 Mugi J9 Sho's Summon I Data 24-d
Hanajiki Mugisarago Gingo 1 ■ Data chart

Claims (3)

[Claims] (1) Time data characterized by having means for correcting time data when the current time is changed by adding the difference between the current time before the change and the current time after the change to the held time data. A processing device with a correction function. (2) A processing device characterized by having means for correcting time data when the current time is changed by adding a difference between the current time before the change and the current time after the change to the time data held. In a network system in which multiple processors are connected, there is a means for each processor to send a request to know the current time of another processor over the network, and a means for the own processor to respond to requests sent by other processors. Create a means for sending the current time onto the network and a database for receiving the current time sent by another processing device and storing the difference between the current time of the own processing device and the current time of the other processing device. and means for correcting the time data using the database when referring to the time data held by another processing device. (3) means for sending the difference between the current time before the change and the current time after the change as data on the network when each processing device changes its own current time; 3. The network system according to claim 2, further comprising means for receiving data and updating said database.