JPH01228016A - High speed picture display system - Google Patents

Abstract

PURPOSE:To shorten a response time by storing a data picture signal fetched first into a RAM controlled by a terminal after the data picture signal stored in an external file is updated. CONSTITUTION:A high speed picture displaying system is equipped with a terminal control part 1 and plural terminals 2A-2N, and these are coupled by a data bus. The terminals 2A-2N are composed of CRT terminals 21A-21N and RAM 22A-22N. Further, the terminal control part 1 is connected through a communication line 100 to a host computer 52 and a file 51. When a data picture signal stored in an external file 51 of the host computer 52 is fetched and displayed with respective terminals 2, and the result is fetched into CRT terminals 21A-21N first after the data picture signal of the said file 51 is updated, the signal is stored through the terminal control part 1 to RAM 22A-22N. Thus, up to the time when the data picture signal of a next file 51 is updated, the signal can be fetched from the RAM 22A-22N.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a high-speed screen display method, and in particular to a CR system that stores frequently used data screen signals among distributed terminals.
This invention relates to a high-speed screen display method that allows T terminals to display images in a short time.

[Conventional technology]

Conventionally, in a system in which a data screen is called up and the contents thereof are used by the operator of each terminal, the terminal that requires this data screen directly calls up and uses the file in which the data is stored. In this method, if the number of terminals is small or the system is simple, even if a large number of communication lines are occupied for calling, there will be little impact on other terminals.

However, when the number of terminals is large, the usage rate of communication lines increases and files on the host computer are accessed frequently, which greatly affects other terminals and increases response time.

For example, when a doctor instructs a patient to undergo a test at a hospital, the test items ordered are almost constant depending on the department to which the doctor belongs. Therefore, such information always needs to go to the doctor who instructs treatment based on the medical results in the medical record, but the screen for displaying test items must access files controlled by the host computer each time. Therefore, if the conventional technology is applied, the above-mentioned disadvantages will occur.

Next, an example of the conventional technique will be explained with reference to FIG. An example of the conventional technology is a terminal control section 81 and a CRT terminal 82A.
~82N, and these are connected by a data bus. Further, the terminal control unit 81 is connected via a communication line 110 to a host computer 91 and a file 92 controlled by the host computer 91.

For example, a data screen requested by the CRT terminal 82A is specified, and the terminal control section 81 requests the host computer 91 for the specified data screen signal through the communication line 110. Here, the host computer 91 reads data from the file 92, edits the data, and creates a data screen.This data screen signal is transmitted from the host computer 91, received by the terminal control unit 81 through the communication line 110, and sent to the CRT terminal again. Output to 82A. The CRT 82A receives this, sets it to 1, and displays it on its display screen.

Here, for example, when accessing a file on the host computer from the CRT terminal 82B as in the case of the above-mentioned CRT terminal 82A, access from the CRT terminal 82B is not possible until the access from the CRT terminal 82A is completed. , from the terminal's perspective, the waiting time for the host computer's response becomes longer, causing a phenomenon of poor response. In particular, even if the number of updates is small, such as when the file 92 is updated once a day, for example, when the file is updated before the start of medical treatment when the operator does not operate the terminal in this work, the data screen Each time a call is made, a file on the host computer is accessed, and during that time, access from other terminals is not possible.

There is also a method of arranging files for each terminal control unit 81, but the time from the screen display request to the screen display is not always satisfactory.

[Problem to be solved by the invention]

The problem with the conventional technology that the present invention aims to solve is that when each terminal requests a data screen as described above, each terminal occupies the communication line for each type, regardless of the content, and the host computer The problem is that the response time of the host computer becomes long because not only the data screen is being received, but also the host computer has frequent accesses.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a high-speed screen display method that solves the above-mentioned drawbacks.

[Means to solve the problem]

The high-speed screen display method of the present invention includes displaying a data screen, an instruction to call the data screen,
a plurality of terminal means for storing data screen signals transferred from a file controlled by a host computer in accordance with predetermined instructions in a RAM built into the terminal; The computer is configured to include terminal control means for controlling input/output, and for requesting transfer of data screen signals stored in the memory controlled by the host computer and for controlling reception of the data screen signals.

〔Example〕

Next, the present invention will be described with reference to drawings showing embodiments.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, and FIG. 2 is a flow chart showing the operation of one embodiment of the present invention.

First, an overview of the present invention will be explained.

Even if each terminal is equipped with a magnetic disk to store files in order to improve file access response, it usually takes 3 to 4 seconds from the screen display instruction to the display. This value is improved compared to the 5 to 10 seconds required when calling from a file on the host computer. However, during busy times, it is desired to be able to access the site even more quickly. Therefore, here we use semiconductor RAM (Random A
accessMe+r+ory), and C
By enabling direct control from the RT terminal, the time required from instruction to display has been shortened to 1 to 2 seconds.

According to this method, the time loss of busy doctors is reduced, and since the data is updated every day before the start of medical treatment, there is no particular problem in using RAM as memory. If you are dealing with an emergency patient outside and can use the stored information from the previous day or the day, in most cases, if you back up the information with a battery, there will be no problem.

Next, the configuration of an embodiment of the present invention will be described.

As shown in FIG. 1, this embodiment includes a terminal control unit 1 and a plurality of terminals 2A to 2N, which are connected by a data bus. ~22N and are connected by a data bus. The terminal control unit 1 also connects to a host computer 52 via a communication line 100 and a file 5 controlled by the host computer 52.
Connected to 1. Any one of terminals 2A to 2N
For example, if you specify the data screen required by this terminal 2A from 21A to the CRT terminal of terminal 2A, the RAM 22
It is determined whether the specified data screen stored in A is the latest one (whether it is after the start of medical treatment), and if it is the latest one, it is stored in the CRT terminal 21A. The data of this screen is displayed on the front surface.

Also, the data screen required by terminal 2A is in RAM 22A.
If the data screen signal required by the terminal 2A is not available or is not the latest, the CRT terminal 21A requests the host computer through the terminal control unit 1 through the communication line 100 for the data screen signal required by the terminal 2A. reads the data signal from the file 51, edits the data on the data screen, and sends it to the host computer 52.
This data screen signal is transmitted from the terminal controller 1 through the communication line 100, and then sent to the CRT terminal 2 again.
1A and stored in the built-in image memory. This is displayed on the display screen of the CRT terminal 21A. Here, the signal of the data screen of the image memory built into the CRT terminal 21A is controlled by the terminal, and the signal of the data screen of the RAM 22A is updated and stored.

Note that the memory that stores files on each terminal is RAM.
Therefore, unless the RAM is backed up by a battery when the power is turned off during off-hours, its memory contents will be erased. Therefore, even if the contents stored in the file 51 are changed at a predetermined time outside of business hours once a day, there is usually no contents stored in the RAM at the start of the next day's medical treatment. Therefore, only when the first display instruction is given, the file 51 connected to the host computer 52 is displayed.
need to be transferred from

Next, the operation of one embodiment of the present invention will be explained in order with reference to flowcharts.

First, any one of the CRT terminals 21A to 21N,
For example, display the data screen on the CRT terminal 21N using this CR.
When instructed from the T terminal 21N (step ■), the terminal 2N
to instruct reading of the data screen signal in the RAM 22 (step ■). Here, it is first determined whether the data screen signal was updated and stored in the RAM 22N at the time of the latest update of the data screen (step ■); When the update data screen signal is stored in the RAM 22N, the data screen signal is stored in the image memory of the CRT terminal 21N (step ■), and the data screen signal is stored in the CRT terminal 21N.
1N (step ■).

In step ■, the update data screen signal is transferred to RAM22A.
If the data screen is not stored in the CRT terminal 21N, the CRT terminal 21N requests the host computer 52 through the terminal control unit 1 for the data screen specified by the CRT terminal 21N (step 2). Next, the host computer 52 reads the data signal from the file 51 (step ■), edits the read data signal into a data screen signal (step ■), and transmits the data screen signal from the host computer 52 (step ■). A data screen signal is received by the CRT terminal 21N through the terminal control section 1 (step 2). Steps 2 to 2 show the operation of the host computer and are surrounded by dotted lines in FIG.

The data screen signal received by the CRT terminal 21N through the terminal control section 1 is first stored in the image memory of the CRT terminal 21N (step 0), and then displayed on the CRT terminal 21N (step C). At the same time, the data screen signal is stored in the RAM 22 through the terminal control unit 1 (step 0), and the update of the data screen in the RAM 22N is completed when the first data screen request is accessed after the latest update of the data screen signal.

As mentioned above, in this embodiment, when the data screen signal stored in the file external to the host computer is captured and displayed on each terminal, the data screen signal stored in the file external to the host computer is first updated after the data screen signal is updated. When this is taken into the CRT terminal, the data screen signal is stored in the RAM controlled by the CRT terminal through the terminal control section. Furthermore, in order to display a data screen on a CRT terminal until the next update of the data screen signal of a file external to the host computer, the data screen signal is fetched from the terminal's RAM.

〔Effect of the invention〕

1. As explained in detail, the high-speed screen display method of the present invention stores the first data screen signal captured after updating the data screen signal stored in the external file of the post computer in the RAM controlled by the terminal. This has the effect of shortening response time and reducing overhead.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of an embodiment of the present invention,
FIG. 3 is a block diagram showing the configuration of an example of conventional technology. ■...Terminal control unit, 2A to 2N...Terminal, 21
A~21N...CRT terminal, 22A~22N...
...RAM. Agent Patent Attorney Oto Hara Uchi Figure 1 MZ Diagram

Claims (1)

[Claims] Displaying a data screen and an instruction to call the data screen;
a plurality of terminal means for storing data screen signals transferred from a file controlled by a host computer in accordance with predetermined instructions in a RAM built into the terminal; The device is characterized by comprising terminal control means for controlling input/output, requesting transfer of data screen signals stored in the memory controlled by the host computer, and reception of the data screen signals. High-speed screen display method.