JP2570128B2 - Online real-time data processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an online real-time data processing system, and more particularly to an online real-time data processing system suitable for online inquiry.

[0002]

2. Description of the Related Art In a conventional online real-time data processing system, a host computer and a plurality of terminal devices are connected by a communication line.

[0003] The host computer performs predetermined processing based on input data from the terminal device, creates screen data necessary for displaying a local screen on the terminal device based on the processing result, and generates the terminal data. Send to device.

A terminal device displays a local screen based on screen data from a host computer, and when the operator inputs data based on the display screen, outputs the input data to the host computer.

Here, in order to improve the response speed, the amount of screen data from a host computer is reduced.

For example, in Japanese Patent Application Laid-Open No. 61-48028, a host computer performs a predetermined process on the basis of input data from a terminal device, compares it with the previous screen data on a byte-by-byte basis, and determines only different data portions. The transmission data is reduced by transmitting the data to the terminal device.

Further, the host computer has identified whether or not the terminal device is using the local screen, and has selected transmission data.

[0008]

However, in the above conventional example, since the host computer identifies and processes the terminal device, the processing in the host computer becomes complicated, and data is input from the terminal device. After that, it takes time until the corresponding local screen is displayed, resulting in poor responsiveness.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an online real-time data processing system which can solve the above-mentioned disadvantages of the prior art and which is excellent in response to an inquiry from a terminal device.

[0010]

Therefore, according to the present invention, there is provided a host computer for performing predetermined signal processing based on input data and outputting screen data, analyzing the screen data from the host computer, and changing the changed data and local data. Relay means for creating screen designation data and compressing the data; analyzing compressed data from the relay means to search for a previously stored local screen according to the local screen designation data; And a terminal device for synthesizing and displaying the image.
Change data extractor that analyzes data and extracts change data
And analyze screen data to create local screen designation data
A local screen designating section for
The column is operated according to the setting data,
The operation / non-operation is set . This aims to achieve the above-mentioned object.

[0011]

The host computer performs predetermined processing based on input data from the terminal device, and outputs screen data to the relay means.

The relay unit analyzes the screen data from the host computer, extracts the change data and the local screen designation data, compresses the data, and outputs the data to the terminal device.

The terminal device analyzes the compressed data from the relay means, searches for a local screen stored in advance according to the local screen designation data, and combines and displays the local screen and the changed data.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

In the embodiment shown in FIG. 1, a host computer 3 which performs predetermined processing based on input data and outputs screen data, analyzes screen data from the host computer 3 and creates change data and local screen designation data. Relay means 1 for performing data compression of the data
And a terminal device 2 that analyzes compressed data from the relay unit 1, searches for a local screen stored in advance according to the local screen designation data, and combines and displays the local screen and the changed data.

Here, the relay means 1 is a host screen receiving section 1A for receiving screen data from the host computer 3.
A change data extracting unit 1B for analyzing screen data from the host screen receiving unit 1A and extracting change data; and a local screen specifying unit 1C for analyzing screen data from the host screen receiving unit 1A and creating local screen specifying data. A screen data compression unit 1D for compressing the change data from the change data extraction unit 1B and the local screen designation data from the local screen designation unit 1C; and a terminal transmission for outputting the compressed data from the screen data compression unit 1D to the terminal device. 1E.

The terminal device 2 includes a screen data input unit 2A for analyzing compressed data from the relay unit 1 and extracting change data and local screen designation data, a key input unit 2E for an operator to input data, Data output unit 2B for outputting data from key input unit 2E to host computer 3
A local screen storage unit 2D that stores local screen data in advance, a display unit 2F that displays local screen data, and a local screen storage unit 2 that uses local screen designation data from the screen data input unit 2A as keywords.
A terminal control unit 2C that retrieves D, extracts local screen data, combines the changed data from the screen data input unit 2A with the local screen data, and outputs it to the display unit 2F.
Is provided.

Next, the operation of this embodiment will be described.

(A). If the terminal uses a local screen:

[0020] When the operator inputs data from the key input unit 2E, the terminal control unit 2C outputs the data to the data output unit 2B.

The data output unit 2B outputs data from the terminal control unit 2C to the host computer 3.

[0022] The host computer 3 analyzes the data from the data output unit 2B and transmits the corresponding host screen data to the relay unit 1.

[0023] The host screen receiving unit 1A receives host screen data from the host computer 3 and outputs the host screen data to the changed data extracting unit 1B and the local screen specifying unit 1C.

Upon receiving the host screen data from the host screen receiving section 1A, the changed data extracting section 1B extracts the changed data.

Upon receiving the host screen data from the host screen receiving section 1A, the local screen specifying section 1C creates local screen specifying data.

The screen data compression section 1D compresses the change data from the change data extraction section 1B and the local screen specification data from the local screen specification section 1C.

The terminal transmitting section 1E includes a screen data compressing section 1D.
Is output to the terminal device 2.

[0028] The screen data input unit 2A analyzes the compressed data from the terminal transmission unit 1E and extracts change data and local screen designation data.

The terminal control unit 2C includes a screen data input unit 2A
The local screen storage unit 2D is searched using the local screen designation data from as a keyword, and local screen data is extracted.

Then, the terminal control section 2C combines the changed data from the screen data input section 2A with the extracted local screen data, and outputs the combined data to the display section 2F as display data.

The display section 2F displays the display data from the terminal control section 2C.

The operator looks at the screen displayed on the display unit 2F, and inputs the next data from the key input unit 2E when necessary. Then, the processing shifts to the above processing.

(B). If the terminal does not use the local screen:

[0034] When the operator inputs data from the key input unit 2E, the terminal control unit 2C outputs the data to the data output unit 2B.

The data output unit 2B outputs data from the terminal control unit 2C to the host computer 3.

[0036] The host computer 3 analyzes the data from the data output unit 2B and transmits the corresponding host screen data to the relay unit 1.

[0037] The host screen receiving unit 1A receives host screen data from the host computer 3 and outputs the host screen data to the changed data extracting unit 1B and the local screen specifying unit 1C.

Upon receiving the host screen data from the host screen receiving section 1A, the changed data extracting section 1B extracts the changed data.

The local screen designating section 1C does nothing when receiving the host screen data from the host screen receiving section 1A.

The screen data compression section 1D compresses the changed data from the changed data extracting section 1B.

The terminal transmitting section 1E includes a screen data compressing section 1D.
Is output to the terminal device 2.

[0042] The screen data input unit 2A analyzes the compressed data from the terminal transmission unit 1E and extracts changed data.

The terminal control unit 2C includes a screen data input unit 2A
Is output to the display unit 2F as display data.

The display section 2F displays the display data from the terminal control section 2C.

The operator looks at the screen displayed on the display unit 2F, and inputs the next data from the key input unit 2E when necessary. Then, the processing shifts to the above processing.

Whether the terminal device uses the local screen or not can be set by a dip switch of the relay unit 1. Then, the relay unit 1 checks the setting data of the dip switch when the power is turned on, and sets the operation / non-operation of the local screen specifying unit 1C.

As described above, according to the present invention, the relay means 1 is provided between the host computer 3 and the terminal device 2,
Since the screen data is compressed in the relay unit 1, the host computer 3 does not need to be aware of whether the terminal device uses the local screen or not, and the line between the relay unit 1 and the terminal device 2 has a low-speed line. However, the response speed can be improved.

[0048]

Since the present invention is constructed and functions as described above, according to this, the host computer can perform processing without being conscious of whether the terminal device uses the local screen or not. On the host computer
Program development burden is reduced, and relay means
Since the screen display is controlled, it is possible to provide an unprecedented excellent online real-time data processing system capable of increasing the response speed to inquiries and the like from the terminal device.

[Brief description of the drawings]

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

[Explanation of symbols]

 Reference Signs List 1 relay device 1A host screen receiving unit 1B change data extracting unit 1C local screen specifying unit 1D screen data compressing unit 1E terminal transmitting unit 2 terminal device 2A screen data input unit 2B data output unit 2C terminal control unit 2D local screen storing unit 2E key Input unit 2F Display unit 3 Host computer

Claims (2)

(57) [Claims] 1. A host computer for performing predetermined signal processing based on input data and outputting screen data, analyzing screen data from the host computer to generate change data and local screen designation data, and a relay means for performing data compression, and by combining the local screen and change data as well as searching the local screen that stores in advance in accordance with the local screen data specified by analyzing the compressed data from the relay means
Is equipped with a terminal device for displaying change data, and the relay means is provided with screen data from a host computer.
A change data extractor that analyzes the data and extracts change data;
Analyze screen data and create local screen designation data
A local screen designating section, wherein the relay means performs the local screen
An online real-time data processing system characterized by setting operation / non-operation of a designated unit . Wherein said relay means, and the screen data compression unit for compressing the local screen designation data from the modified data and the local screen designation section from the change data extraction unit, outputs the compressed data from the screen data compression unit 2. The online real-time data processing system according to claim 1, further comprising: a terminal transmitting unit that performs the processing.