JPH02226453A - Transfer system for initial data - Google Patents

Abstract

PURPOSE:To reduce transfer data and to shorten a transfer time by transferring date data which comes to be a key from a terminal equipment to a host device, checking time data in the host device and transferring only data in a different part to the terminal equipment. CONSTITUTION:Transfer data 21 and 22 are logically divided into blocks, and time data which comes to be the key and block numbers are added to respective data 21 and 22. At an initial rise time, data of all the blocks are transferred from the terminal equipments 121 and 122 to the host device 11. The host device 11 checks time data transmitted from the terminal equipments 121 and 122 after a second time. Consequently, only the different data blocks are detected in both equipments. When an n-th data block is different, the n-th data block, date data and the number of the n-th block are transferred from the host device to the terminal equipments 121 and 122. Thus, the transfer time can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device that needs to transfer a large amount of data during stand-up, and particularly relates to an operating system that needs to reduce system start-up time as much as possible. .

(Prior art) Conventionally, in the initial data transfer method of this type of equipment that requires data transfer at startup, the center side host Q+ft
When transmitting data from the terminal device to the terminal device, the configuration was such that all data was transmitted every time the device was started up.

(Problems to be Solved by the Invention) In the conventional initial data transfer method described above, all data must be transferred from the host device on the center side to the terminal device every time the system is started up. Therefore, when a large amount of initial data is transferred, it takes a long time to transfer the data and the line usage rate is high.

An object of the present invention is to transfer key date data from a terminal device to a host device, and check time data in the host device in an initial data transfer method for a device that requires a large amount of data transfer at startup. To provide an initial data transfer method configured to perform initial data transfer in a short time by eliminating the above-mentioned drawbacks by detecting different parts and transferring only the data of the relevant parts to a terminal device. It is in.

(Means for Solving the Problems) The initial data transfer method according to the present invention is configured by a terminal device and a host device.

The terminal device is capable of sending key time data.

The host device is capable of detecting a data block different from the data block of the terminal device by checking the time data and sending it to the terminal device.

(Implementation row) Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows an example of the initial data transfer method according to the present invention.
I! FIG. 2 is a block diagram showing one column.

In FIG. 1, 11 is the host device fl, 121°122
are terminal devices, and 131 and 132 are cables, respectively.

FIG. 2 is a conceptual diagram showing the initial data transfer performed in the apparatus of FIG. 1.

In FIG. 2, 21 is the transfer data of the host device 11;
22 is the transfer data of terminal values d121 and 122.

Transfer data 21 and 22 are divided into 1 blocks,
Time data serving as a key is added to each data 21 and 22, and a block number is also added.

At the first startup, all blocks of data are transferred to the terminal device 1.
21 and 122 to the host device 'ft11.

From the second time onward, the host device 11 uses the terminal devices 121 and 12.
Check the time data sent from 2. This allows only different data blocks to be detected between the two devices. As a result, if the nth data block is different, the nth data block, the date and time data, and the nth block number are transferred from the host device 11 to the terminal devices 121 and 122. Terminal value 1fffi12
At 1122, the host device! Save the data block transferred from 111.

(Effects of the Invention) As explained above, the present invention is capable of transmitting key date data from a terminal device to a host device in an initial data transfer method of a device that requires a large amount of data transfer at startup. , check the time data on the host device,
By detecting different parts and transferring only the data of the relevant parts to the terminal device, there is an effect that the amount of data to be transferred can be reduced, the transfer time can be shortened, and the usage rate of the line can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an initial data transfer method according to the present invention. FIG. 2 is a conceptual diagram showing data transferred by the apparatus of FIG. 1. 11--Bone host device 121.122--A terminal device 151.132-Cable 21.22--Transfer data Figure 1 Figure Figure 2

Claims (1)

[Claims] A terminal device that can send key time data,
Initial data transfer characterized by comprising a host device capable of detecting a data block different from a data block of the terminal device by checking the time data and sending it to the terminal device. method.