JPH0317730A - Crt display device - Google Patents

Abstract

PURPOSE:To surely and easily perform processing with a CRT display device by securing a constitution where the control of a connection system is defined as the communication data which are transferred among host computers and the load of the CRT control is distributed to those host computers respectively. CONSTITUTION:The display data are sent to a CRT from host computers 11 - 1n with the parallel interruption processes applied to a controller and processed in parallel up to the host data transmission/reception parts 61 - 6n. Meanwhile these data are processes in series at a data conversion part 11 and a CRT data transmission/reception part 7. Thus the windows are partly displayed in parallel via the multi-window control instead of a serial display method where each window is displayed in parallel little by little. On the other hand, the serial operation order is adopted at the parts 7 and 11 and the host computers are set in parallel at the parts 61 - 6n when the display data are sent to these computers from the CRT owing to the presence of the key input and the pick signals of a light pen.

Description

[Detailed Description of the Invention] A. INDUSTRIAL APPLICATION FIELD The present invention relates to a C
The present invention relates to an RT display device, and particularly to a CRT controller.

B. Summary of the Invention The present invention reduces the burden on the host computer and reliably and easily performs multi-window processing by performing independent and parallel transmission and reception processing for each host computer in a multiple-coupled CRT display device.

C. A conventional multiplexed CRT display device is constructed as shown in FIG. The display data from the n host computers 11 to 11 are multiplexed by the multi-window control unit 2, cut out for multi-window display, and combined into two screens, and the CRT controller 3 controls the display on the CRT display 4. It will be done. For example, in the illustration, windows A to D are installed on different host computers l, ~In, respectively.
It is displayed as a divided image that matches the image data given by.

In performing such multiple connection and multi-window display, the controller 2 is one of the host computers 11-In! The processing function is borne by the machine.

D. Problems to be Solved by the Invention In conventional CRT display devices, one host computer is responsible for multiple connection processing and multi-window processing, which increases the burden on the host computer and increases the CR
There was a problem that made it difficult to add various functions desired to the T display.

An object of the present invention is to reduce the burden on a postcomputer and ensure and facilitate multi-window processing.

E. Means and Effects for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a serial system between a plurality of host data transmitting/receiving units that individually transmit and receive data in parallel with a plurality of host computers, and a CRT display and a keyboard. It has a CRT data transmitting/receiving section that transmits and receives data, and a data converting section that performs data conversion for exchanging data between the host data transmitting/receiving section and the CRT data transmitting/receiving section, and transmits and receives data independently and in parallel with each host computer. It is equipped with a CRT controller that performs processing, and has multiple connections in which each host computer performs transmission and reception processing independently and in parallel, and the connection system is also managed by software communication data transmission and reception.

F. Embodiment FIG. 1 is a block diagram showing an embodiment of the present invention. C
The RT controller 5 includes host computers l, ~l,
1 and host data transmitting/receiving units 61 to 6n for transmitting and receiving data (display data and communication data), respectively, and have a multiple coupling function, and each transmitted and received data (post data) is asynchronously processed in parallel, and all data is processed by a software switch. Turn on the connection to the system or turn on only the specified system. Further, the CRT controller 5 is connected to a CR which transmits and receives data (CrtT data) to and from the CRT display 4.
It is equipped with a T data transmitting/receiving section 7, which receives data from the light pen 8 and keyboard 9 to and from the keypad 10, and transmits display data for multi-window display and the like. The data converter 11 is connected to the host data transmitter/receiver unit 6, ~6n and C.
The RT data transmitter/receiver 7 or the key driver 10 mutually converts the data into data formats to be transmitted and received, respectively.

In this configuration, the host computer! The display data transmission from 1 to 6n to the CRT side is performed by parallel interrupt processing to the controller, and the host data transmitting/receiving units 6 and 6n are processed in parallel, and the data conversion i
ll and CRT data transmitting/receiving section 7, serial processing is performed.

As a result, in multi-window control, each window is displayed in parallel little by little, instead of serial display in which one window is finished and then the next window is displayed. On the other hand, the processing from the CRT side to the host computer side is a key task of human labor or labor. Since it is a topen big signal, a serial operation order is adopted in the CRT data transmitter/receiver 7 and the data converter 11, and the host data transmitter/receiver 61-6. , each system is parallelized, but a serial operation order is adopted within the system.

Therefore, a CRT display device is an individual host computer! , ~1n can be connected to multiple systems at the same time, and transmission and reception processing can be performed independently and in parallel with each system. This means that multiple host computers
It can support load distribution and asynchronous parallel control of RT display control. Furthermore, by combining this with control by dividing the CRT screen into multiple windows, each window can be controlled in association with the host computer.

In addition, multi-window control allows each host computer to control each window in parallel and independently, and each computer can perform parallel display of screens and man-machine processing of light pens, mice, etc. for each window in parallel. . Furthermore, when the host computer goes down, only a part of the window on the CRT becomes unmonitorable and uncontrollable while the control is entrusted to the backup system, making maintenance easier than conventional CRT display control using a single host computer. Excellent in securing.

G. Effects of the Invention As described above, according to the present invention, a CRT controller that performs transmission and reception processing independently and in parallel with each host computer is provided for multiple connection with a host computer, and the connection system is managed between each host computer and each host computer. The CRT control load is distributed to each host computer as communication data to be sent and received by each host computer, thereby reducing the burden.In addition, for multi-window control, etc., independent control by each computer makes processing reliable and easy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a conventional block diagram. ! ．． ,II,... host computer, 5...CR
T controller, 6. , 6n... Host data transmitting/receiving section, 7... CRT data transmitting/receiving section, 2... Data converting section. Fig. 2 Koushi's mouth 1 soku decoy

Claims (1)

[Claims] (1) Multiple host data transmitting/receiving units that individually transmit and receive parallel data with multiple host computers, and a CR that transmits and receives serial data with a CRT display and keyboard.
T data transmitting/receiving section, the host data transmitting/receiving section and CR
A CRT display device comprising: a data conversion unit that performs data conversion for exchanging data with a data transmission/reception unit; and a CRT controller that performs transmission/reception processing independently and in parallel with each host computer. .