JPH0214725B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In a display device that operates in a master-slave relationship, the main display device selects only the information necessary for the slave display device, re-edits it as information for one screen, and sends it out. Reduce the burden on computer systems.

[Industrial application field]

The present invention relates to a display device that operates according to a master-slave relationship, and particularly to a method for controlling a slave display device in which a part of the content displayed on a master display device is selected and displayed on a slave display device.

2. Description of the Related Art Various display devices have come into use with the development of an information society, and display devices are used, for example, to provide departure and arrival guidance for aircraft, trains, and the like. These display devices are connected online to a computer system and display various information processed by the computer system.

In this case, multiple sub-display devices generally display only the information necessary for passengers, and the main display device operated by the operator also displays information needed by the operator in addition to the content displayed by the sub-display devices. .

In this way, although the display contents on the main display device and the sub display device are usually different, it is desirable that this does not increase the burden on the computer system that sends out the information.

[Conventional technology]

FIG. 2 is a diagram illustrating a conventional display device control method, and FIG. 3 is a diagram illustrating a display screen.

The computer system 1 connects a main display device 2 and a sub-display device 3, and the main display device 2 displays information 5 required by passengers on a display screen 4, as shown in FIG. 3a.
and the information required by the operator is displayed.

Then, as shown in FIG. 3B, the sub-display device 3 displays only the information 5 required by the passenger on the display screen 6 after re-editing it into one screen's worth of information.

[Problem that the invention seeks to solve]

As described above, conventionally, the computer system reedits part of the content displayed on the main display device and displays it on the sub display device, which poses a problem of burden on the computer system.

In view of these problems, the present invention is designed to cause the main display device to re-edit the information sent to the slave display device in order to reduce the burden on the computer system that controls the entire system as much as possible. be.

[Means for solving problems]

FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention.

7 is a processor that controls the entire display device, and 8 stores information sent from the computer system.
RAM 9 is an interface circuit that receives information from the computer system, and 10 is a screen memory that receives one screen worth of information from RAM 8 and stores it.

Reference numeral 11 denotes a display control circuit that sends information for one screen of the screen memory 10 to the display section 13 and displays it.
Reference numeral 2 denotes an information selection circuit that re-edits the information of a specific area provided in the screen memory 10, that is, a fixed area or an area specified by an attribute, etc., into information for one screen and sends it to the interface circuit 14; 13, a display The display unit 14 that displays information is an interface circuit that sends the information extracted by the information selection circuit 12 to a sub-display device.

The information selection circuit 12 extracts only the information in the specific area of the screen memory 10 instructed by the computer system, reedits it into information for one screen, and sends it to the sub display device via the interface circuit 14 for display. composition.

[Effect]

With the above configuration, the main display device can reorganize and send information to be displayed on the slave display device instead of the computer system, and the load on the computer system can be reduced.

〔Example〕

In FIG. 1, the processor receives information from the computer system via the interface circuit 9.
Temporarily store it in RAM8. The processor reads this information for one screen from RAM 8 and stores it in screen memory 1.
Store at 0. Display control circuit 11 is screen memory 1
The contents of 0 are read out and displayed on the display section 13.

If the computer system has a fixed area in the screen memory 10 in advance, it gives an instruction to store information to be displayed on the slave display device in this fixed area. If a fixed area is not set, a storage area in the screen memory 10 for information to be sent to the sub-display device is specified by attributes or the like.

When the processor 7 stores information from the RAM 8 to the screen memory 10, it stores the information to be sent to the sub-display device in a fixed area or an area specified by an attribute, that is, a specific area. When the information selection circuit 12 reads information from the screen memory 10, it reads only the information in this specific area, re-edits it as information for one screen, and sends it through the interface circuit 14 to a sub-display device (not shown).

〔Effect of the invention〕

As explained above, in the present invention, the main display device selects only the information required by the sub-display device and sends it to the sub-display device, thereby reducing the burden on the computer system of reorganizing information for the sub-display device. I can do it.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention, FIG. 2 is a diagram explaining a conventional display device control method, and FIG. 3 is a diagram explaining a display screen. In the figure, 1 is a computer system, 2 is a main display device, 3 is a sub display device, 7 is a processor, and 8 is a
RAM, 9 and 14 are interface circuits, 10 is a screen memory, 11 is a display control circuit, 12 is an information selection circuit, and 13 is a display section.

Claims (1)

[Claims] 1. In a display device that has a screen memory 10 that stores information for one screen and displays the contents of the screen memory 10, information in a specific area provided in the screen memory 10 is selected. a selection means 12 for re-editing the information selected by the selection means 12; and an interface 14 for transmitting the information selected by the selection means 12; A sub-display device control method characterized by transmitting.