JPS5960634A - System for transmitting display data - Google Patents

Abstract

PURPOSE:To reduce the loads on a computer and data highway by outputting and successively transmitting to next station display data when a received designated address coincides with the address of its own station. CONSTITUTION:The receiver 20 of a station on a data highway checks whether a received secondary station address SA of a CRT data transfer pattern from a computer 15 coincides with the address of its own station or not, and, when they coincide with each other, hands over the received data to a CRT data editing module 21. The CRT data editing module 21 fetchs a CRT device address VA of the CRT data transfer pattern and hands over a TEXT section to a CRT adaptor 24 by fixing the output and displays the address VA on a display, and, at the same time, changes the transmission pattern of data. The changed transmission pattern is transferred from a transmission module 23 to the next station.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a display data transmission system for displaying data from a computer to a plurality of display devices such as CRTs via stations connected on a data highway.

[Technical background of the invention]

A conventional display data transmission method for displaying the same screen from a computer to a plurality of CRT displays via a data highway will be explained with reference to FIG. In Figure 1, 1~
5 is a station, 6 to 9 are CRT adapters provided on the output side of stations 2 to 5, 10 to 13 are CRT displays, 15 is an IT machine, and 14 is a data highway adapter provided on the output side. .

The odd calculator 15 is a CRT display 10, 11.12°13,
Assume that the same data is output by specifying an address for each. In this case, the computer 15 outputs data to the CR, T display 10 without switching. Next, the computer 15 is CR
Data is output to T display 1. In this way, the computer 15 displays the CRT 1 for the CRT displays 10 to 13.
Output data one by one.

Here, the series of these operations will be specifically described as follows. First, when data for the CRT display 10 is output from the computer 15, this data is transferred from the computer 15 to the data highway adapter 14 to the station 1 to the station 2.
It is transmitted through the transmission path →CRT adda 7° taro→CRT lθ.

] When data for CRT display 1 is output from bag 15, this data is transferred to computer 15 → data highway adapter 14 → station 1 → station 3 → CRT adapter 6 → CRT display'+ ! 'Ll
It is transmitted through a transmission path called l. Furthermore, when data for the CRT display 12 is output from the computer 15, this data is transferred from the computer 15 to the data highway adapter 14 to the station 1 to the station 5 to the CRT adapter 9 to the CR.
It is transmitted through a transmission path called the T display 13.

[Problems with background technology]

However, in the above display data transmission method, the computer 15
Since the same data is output to each CRT display one by one via stations on the data highway, as the number of CRT displays increases, the load on the data highway and the computer increases. Unfortunately, the response of the CRT display also slows down accordingly.

[Purpose of the nth launch]

The present invention reduces the load on the computer and the number of data highway transfers by making it possible to sequentially transmit display data to multiple display devices by outputting the display data once from the multiplication device. An object of the present invention is to provide a display data transmission method that can reduce the load on a data highway.

[Summary of the invention]

In order to achieve such an object, the present invention specifies each station output from a computer. If they match, the display device address information (jl is taken from the transferred data and outputted to the corresponding display device along with the display data using f11). The specified address and display device address information are coarsely changed so that the designated address and the display device address information are designated, and are sequentially transmitted to the next station.

[The fruits of invention W! Example I]

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, the same parts as in FIG. 1 include a computer 15, a computer 15, and a highway adapter 14. A stations 16 to 79, details of which will be explained later.
, CRT adapter 6~9, CRT display 10~
13 to form a transmission system. Each of the stations 16 to 19 is connected to a receiver 20 in FIG.
．． CRT data editing module 21, CRT data transfer transfer pattern 7 module module 22 communication module 23
It consists of Note that 24 is a CRT adapter.

Next, the operation will be explained according to the station block diagram shown in FIG.

Now, the computer 15 sends CRT data i4 shown in FIG.
When data is output according to the turn, this data is sent to the receiver 2o of the station on the data highway.
received by. Then, in this receiver 2o, CR
T data transfer transfer no turn It is checked whether the next station address SA matches the address of the own station, and if they do not match, the received data is passed as is to the transmission module 23. If the SA matches the address of the own station, the received data is passed to the CRT data editing module 2.

When the data is passed to the CRT data editing module 2, this CRT data editing module is shown in FIG.
It extracts the CRT f device address UA of the RT f"-event transfer pattern, determines the output CRT, and passes the TI'ffT section to the CRT adapter 24.
has the function of linking the station and the controller of the CRT display. Furthermore, CRT data editing monoyl 21
passes the data to the CRT data transmission nine turn generation module 22. Then this CRT data transfer transfer pattern 7
The module 22 converts the data into a transmission turn as shown in FIG. This is the secondary station address S
AJ is a group that shifts the CRT device address UA1 and moves it to the location of the previous stage SA and UA. In line with this, the following SA2. U.A.? ~SA
4. UA4 is also shifted two characters to the left in the drawing, and the locations where S A 4 and LTA 4 were are cleared. In this way, when the new CRT data transfer pattern is changed to 1,000 turns as shown in FIG. 5, this new CRT data transfer pattern is passed to the transmission module 23. Transfer the pattern to the next station.

When the CRTCRT display turn is transferred to the next station as shown in Figure 5, the same process is performed at the next station, and if the secondary station address SAJ in Figure 5 matches the address of the own station, then The same processing as described above is carried out, and the CRT data transmission e-turn creation module 22 changes the data to a CRT data transmission/sequence as shown in FIG. 5 and transmits it to the next station.

In this way, if you want to output data from the computer 15 to multiple CRT displays, enter the CRT data in the CRT output device field (individual length) shown in Figure 4 at the station building.
By outputting the data to the data highway, the data can be retrieved at each station using the functions described above, and the data can be sequentially displayed on a plurality of CRT displays.

Although the above embodiment describes the case where data is transferred to four CRT displays, it is possible to transfer data to any number of CRT displays by changing the size of the CRT output device field. .

〔Effect of the invention〕

As described above, according to the present invention, when display data is displayed on a plurality of display devices by using stations connected on the data highway, the computer transmits the data once on the data highway regardless of the number of display devices. Since the display data is sequentially displayed on each display simply by outputting the data to the display device, it is possible to provide a display data transmission method that can reduce the load on the computer and the data highway and also improve the response speed.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a system configuration diagram for explaining a conventional display data transfer method, and FIG. 2 is a system configuration diagram for explaining an embodiment of the display data transfer method according to the present invention. FIG. 3 is a block diagram of each station connected on the data highway in the same embodiment, and FIGS. 4 to 6 are diagrams showing CRT data transfer channels. 16-19...Station, 6-9...CRT
7 data, 70-13... CRT display, 14...
Data high unit adapter, 15...calculator, 2o...
・Receiver, 2nd...CRT data editing module,
22...CRT data transfer Transfer pattern 7 module module 3...Transmission module. Patent attorney Takehiko Suzue (Patent attorney)

Claims (1)

[Claims] In a display data transmission method in which the same display data is sequentially displayed from a computer to a plurality of display devices via stations connected on a data highway and each having a different specific address set in a predetermined order, each of the data output from the computer is Transfer data including an address specifying the station and display device address information is received within the station, and it is detected whether the specified address matches the address of the own station, and if they match, the transfer data is By extracting display device address information and outputting it to the corresponding display device together with display data, at the same time rearranging the designated address and display device address information so that the next station is designated and sequentially transmitting it to the next station, one transfer data A display data transmission method characterized in that display data is displayed on a plurality of display devices by transmission of the display data.