JPS5842673B2 - Remote control switching method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control switching system for memory used in a switching center, and particularly to a switching system for specifying a memory switching time in a slave station.

For example, there is a memory in the switching center that stores common data related to billing (call time data per unit charge for each call destination), and such data is stored in order to provide the same service to all subscribers when charges are revised. must be switched at the same time at all exchanges.

To this end, when rates are revised, all exchanges must
When the rate revision time comes, the maintenance staff will have to do various work to temporarily set the call to free status, write new data to memory, and then switch it back to the paid status after completion of the call. It had the disadvantage of continuing.

To this end, exchanges have regular memory and spare memory as memory, and new rate data is transferred from one exchange (master station) to the spare memories of multiple other exchanges (slave stations) before the rate revision time. The idea is to prevent the free state from occurring by having the maintenance staff at each exchange perform manual operations (for example, inputting a command) to switch memory usage from regular use to spare memory while listening to the time forecast at the revised time. It was done.

However, even with this system, the intervention of the maintenance person at each exchange is required, and since the maintenance person performs the work while listening to the time forecast, there is a drawback that the application of the new charges may vary depending on the exchange due to operational errors or the like.

The purpose of the present invention is to eliminate the above-mentioned drawbacks and automatically send the switching designated time information and new data from the sensor station to a plurality of slave stations, and to detect the switching time using a timer included in the slave stations. The present invention provides a method that can switch between memory and memory for accommodating new data.

That is, a slave station having regular and spare memories, a timer, a switching time memory, and a comparison match detection circuit receives new data and memory switching time information from the sensor station, stores the former in the spare memory, and stores the latter in the spare memory. is stored in the switching time memory, and a comparison match detection circuit detects that the time information created by the timer matches the content stored in the switching time memory, thereby making the regular memory and the spare memory It is characterized by switching.

This will be explained below with reference to the drawings.

Figure 1 shows conventional switching control of a storage device, where 1 is a processing device, 2 is a switching circuit, 3 is an initial setting circuit, 4 is a regular memory, 5 is a spare memory, A is a switching key, and X is a relay. It is.

First, the maintenance person writes new data into the spare memory and listens to the time forecast, etc., detects the switching time, and then uses the switching electric key A.
By pressing down, the X relay supplies earth air and operates.

The contact X of this relay connects the processing device 1 and the spare memory 5 that accommodates new data.

In order to avoid erroneous processing due to instability of the interface between the memory and the processing device 1 during connection, it is necessary to initialize the processing device 1 through the initialization circuit 3.

Next, one embodiment of the present invention will be described.

In FIG. 2, 6 is a data reception/writing device, 7 is a switching time memory, 8 is a comparison/number construction circuit, 9 is a timer, and 10
, 10', 1σ' are slave stations, 11 is a specific center station, 1
2 indicates a switching device.

First, the slave station 1 is sent from the center station 11 through the switching device 12.
New data is sent to the slave station 10 and written to the spare memory 5 through the data receiving/writing device 6 within the slave station 10.

Next, create switching time information (for time, information necessary for the system among month, day, hour, minute, and second) is created.

That is, specify the switching mill, hours, minutes, and seconds.

) is sent to the slave station 10 and stored in the switching time memory 7.

In this way, timer 9 (for example, J, J, Y)
(Japan Standard Time) or a device that creates time information by counting accurate one-second pulses.

) coincides with the time stored in the switching time memory 7, an error occurs in the output of the comparison/number construction circuit 8, and the X relay operates.

The contact X of this relay switches between the regular memory 4 connected to the processing device 1 and the spare memory 5 that accommodates new data.

Further, since an output is generated in the comparison/number construction circuit 8, the processing device 1 is brought into an initial setting state through the initial setting circuit 3.

The reason why initial settings are necessary is the same as that explained in FIG.

Although the explanation has been given above regarding the slave station 10, the slave stations 10', 10'
It is also possible to perform the switching all at once by transmitting the switching time information and new data before the switching and detecting the switching time by means of the switching device 120.

As described above, according to the present invention, the memory of multiple slave stations is switched simultaneously by remote control from the center station, so it is possible to provide uniform service to all subscribers and maintain maintenance at specified times. This has the advantage of not requiring human intervention.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a conventional storage device switching system. FIG. 2 is a block circuit diagram showing one embodiment of the present invention. 1... Processing device, 2... Switching device, A
... Telephone key, 3 ... Initial setting circuit, 4.
... Regular memory, 5... Spare memory,
6...Data reception/writing device, 7...Switching time memory, 8...Comparison/number construction circuit, 9
...Timer, X...Relay, 10,
10'. 1 stitch...Slave station, 11...Center station, 12
...exchange device.

Claims (1)

[Claims] 1 A slave station, which has regular and spare memories, a timer, a switching time memory, and a comparison match detection circuit, receives new data and memory switching time information from the center station, stores the former in the spare memory, and stores the latter in the spare memory. By storing the time information in the switching time memory and detecting by a comparison detection circuit that the time information created by the timer matches the content stored in the switching time memory, switching between the regular memory and the spare memory is performed. Features remote control switching method.