JPS60108786A - Time setter - Google Patents

Abstract

PURPOSE:To facilitate the setting of time by selecting first time data as specified with a plurality of time units to generate second time data for initialization while any one of them is selected by specification and fed from one time unit. CONSTITUTION:To set initial time for subsystems 100, 200 and 300, time data of year, month, day, hour or minute is set with a digital switch 2. Then, the data is selected with a data setting circuit 6 and sent out to time data interfaces 11-13 for the system selected with a setting subsystem selection circuit 8 when a setting circuit 7 is turned ON or the entire system and set. After the start of the operation, time data of respective subsystems is received with time display interfaces 14-16 and data of the subsystem selected with a data selection circuit 4 is displayed on a time display mechanism 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a time setting device for a time device of a plurality of computer subsystems.

[Prior art]

Conventionally, when setting the same time between each subsystem in a system where subsystems are loosely coupled (coupling such as sharing peripheral devices without communication between central processing units), each subsystem is If the time is set every time, it is difficult to match the time, and correction using a fine adjustment function is necessary, which is not easy.

A method to solve this problem is to have a common time setting mechanism within the system and simultaneously send out time data set by a digital switch to all subsystems.

However, if the time of a subsystem stops due to a failure etc. after setting a low time using this method, or if the time is set to an arbitrary time for debugging etc., the time of another subsystem running online may change. When resetting the time to match the time, the digital switch is set to the time to match, and time data is sent to the subsystem to be set in synchronization with that time to reset the time.

In this case, there is a disadvantage that the timing of time setting is difficult and discrepancies occur on a second-by-second basis between subsystems, requiring correction.

[Purpose of the invention]

The purpose of the present invention is to enable simultaneous setting of the same time between each subsystem, individual setting, and setting of other subsystem operating times to arbitrary subsystems with respect to time setting of time devices in a plurality of subsystems. To provide a time setting device that can easily set the time of each subsystem and can easily and accurately adjust the time between subsystems.

[Structure of the invention]

The device of the present invention includes a first time data selection means for selecting first time data from a designated first time device among time data supplied from a plurality of time devices; a time data generating means for generating second time data for initializing the device;
a second time data selection means which selects one of the time data according to a designation when the second time data selection means is supplied with the selected time data; and selecting and supplying means for selecting at least one time device among the devices and supplying the selected time data.

[Explanation of Examples]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an information processing system including a time setting device 1 which is an embodiment of the present invention.

The ring system includes a time device 102゜2 in each subsystem.
02 and 302, time devices 102, 202 and 302 respectively for subsystem operational time.
The central processing unit (hereinafter referred to as CPU) 1 is used when each subsystem is started up.
01. The internal clock of 201 and 301 is the time device 102
．． It starts at the time read from 202 and 302.

The subsystems 100, 200, and 300 have an operation mode S such as an online system, a hot standby system, or a debug system, and the operation mode is mutually changed due to operational needs or to deal with failures. Therefore, there are cases where all subsystems need to operate at the same time, and there are cases where only a certain subsystem is operated with individual time settings.

The time setting device 1 has time data interfaces 11 to 1.
3) The time data at the time of setting is sent to the time device 102.202.
and set to 302, and after setting CPU101.201
and 301 internal clock and time device 102.202
The synchronized clock 17 is sent out at 302, and the time of each subsystem is advanced at the reference frequency generated by one oscillator, so that the system is synchronized within the system, and no deviation occurs between the subsystems.

The time data of the time devices 102, 202 and 302 is
The time display interfaces 14 to 16 send the time setting device IK to be selectively displayed.

Therefore, the method for setting the time on the time device of each subsystem must allow various types M, and must be easy and accurate.

FIG. 2 is a block diagram of a time setting device used in FIG. 1, which is an embodiment of the present invention.

The time setting device in FIG. 2 includes a digital switch 2, a synchronization mechanism 3, a data selection circuit 4, a data monitoring circuit 5, a data setting circuit 6, a set circuit 7, a set subsystem selection circuit 8, It is composed of a time display mechanism 9.

Next, the time setting operation will be explained.

First, regarding the initial time setting in the subsystem, use digital switch 2 to set the time at 1:00 on February 2, 2019.

The data setting circuit 6 selects the hour and minute data from the digital switch 2, and when the set circuit 7 is turned on, selects any subsystem selected by the set subsystem selection circuit 8, or All subsystems (
The time data from the digital switch 2 is sent to the time data interfaces 11 to 13 (all subsystems are set to the same time), and the time device of the subsystem receives the time data (9:01 a.m., January 9, 2018) K. The time is set based on This time data is set up to the minute, and when set, the time device of the subsystem is forced to 0.
It stops for seconds. After the subsystems start operating, the time display interfaces 14 to 16 receive the time data of each subsystem, and the data selection circuit 4 displays the display data (including data up to seconds) of the selected subsystem at the time. It is displayed on the display mechanism 9. The hour, minute, and second data of the display data is supplied to the data monitoring circuit 5 and can be used as time data for time setting.

Next, a case will be described in which the time setting of one subsystem is set to the time of another subsystem. In other words, this is useful in cases where a subsystem's time stalls or breaks due to a failure or the like, and when the time is set to restart after repair, the time is set to match the time of another currently operating subsystem.

The data selection circuit 4 selects an operating subsystem and displays its display data on the time display mechanism 9, and the data setting circuit 6 is switched to select the display data supplied from the data selection circuit 4. In response, the data setting circuit 6 supplies an activation signal to the data monitoring circuit 5. The data monitoring circuit 5 monitors the hours, minutes, and seconds of the display data supplied from the data selection circuit 4 in response to the activation signal, and when the seconds of the display data reaches 0 seconds, the hours and minutes are set as time data. The data is sent to the data setting circuit 6.

If the set circuit 7 is ON at this time, time data is sent to the subsystem selected by the set subsystem selection circuit 8 together with the date and year data set by the digital switch 2. In this way, it is possible to accurately and easily set the time of one subsystem to the time of the subsystem in operation.

The synchronization mechanism 3 uses one base oscillator to supply a driving reference frequency to the internal clock and time device 102, 202 and 3o2 (each reference frequency may be different) of each CPU, and performs one time step. By unifying the pace of the data, variations are eliminated and complete synchronization is achieved, and the data is sent out using the synchronization clock 17.

〔Effect of the invention〕

In the present invention, by making it possible to set the time data of an operating subsystem to other subsystems, the time difference with other subsystems can be significantly reduced even when resetting the time of some subsystems. This has the effect of reducing the

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an information processing system including an embodiment of the present invention, and FIG. 2 is a block diagram of the time setting device of FIG. 1. 1...Time setting device, 2...Digital switch, 3...Synchronization mechanism, 4...
Data selection circuit, 5... Data monitoring circuit, 6.
...Data setting circuit, 7...Set circuit, 8...Set subsystem selection circuit, 9...
...Time display mechanism, 11, 12.13...
Time data interface, 14, 15, 16, old...
Time display interface, 17...Synchronized clock, 100°200.300...Subsystem, 101,201,301...CPU, 102
, 202, 302... Time device.

Claims (1)

[Scope of Claims] First time data selection means for selecting first time data from a designated first time device from time data supplied from a plurality of time devices; a time data generating means for generating second time data for initializing the device; and a second time data generating means for receiving the first time data and the second time data and selecting one of the time data according to a designation. and at least one of the plurality of time devices supplied with the time data selected by the second time data selection means.
A time setting device comprising: selection supply means for selecting one time device and supplying the selected time data.