JPS63155232A - Data retrieval device - Google Patents

Abstract

PURPOSE:To shorten the readout time of a data base and improve the use rate, and to display data by providing a memory controller which stores a memory unit with data received by a read terminal device. CONSTITUTION:While an IC card 8 is set on a memory controller 4, an ID number is inputted on a keyboard 5. A terminal control part 7 compares the inputted ID number with a ID number stored on the IC card 8. When they matches with each other, the right to use a host computer is obtained. When an operator inputs a request for data on the keyboard 5, the terminal control part 7 sends a data request command to the host computer 2, Requested data is read out of the data base 1. Then the host computer 2 sends the data back to the terminal control part 7 and the data is sent to the memory controller 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a data retrieval device that retrieves and displays various data stored in a database.

(Prior Art) There is a data retrieval device that stores various data in a database, retrieves only necessary data from the database, and displays and outputs the retrieved data. In this device, a plurality of terminals including, for example, a keyboard, a CRT display device, a terminal control unit, etc. are connected to a host computer that has a database. Therefore, when a data request is inputted from the keyboard, a data request command is issued from the terminal control section to the host computer, and the requested data is read from the database in the host computer. The data is then sent back from the host computer to the terminal control section and displayed on the CRT display device. Therefore, in order to obtain the necessary data, the operator changes the data displayed on the CRT display screen by pressing data request keys from the keyboard at any time while looking at the data displayed on the CRT display screen. . Note that the host computer accesses the database and reads data every time it receives a data request command.

However, with the above configuration, only the terminal device that has exclusive rights to the host computer can access the database and display the data. Therefore, one operator monopolizes a limited number of terminal devices in order to obtain the necessary data, and the usage time becomes long, especially when data is printed out. Therefore,
The utilization rate of the device decreases, and there is also a lot of waste as different operators read the same data over and over again.

(Problems to be Solved by the Invention) As described above, in the conventional devices, the usage rate is low and there is a lot of waste in data reading.

SUMMARY OF THE INVENTION An object of the present invention is to provide a data retrieval device that can shorten the time required to read data into a database and improve the usage rate.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a computer that is connected to a host computer that has a database, requests data from the host computer, and receives necessary data stored in the database. The above object is achieved by comprising a reading terminal device, a memory controller that stores data received by the reading terminal device in a memory unit, and a display output means that reads and displays the data stored in the memory unit. This is a data retrieval device that attempts to

(Function) By providing such a means, when a data request is issued from a reading terminal device to a host computer that has a database and the returned data is sent to the reading terminal device, this data is processed by the memory controller. stored in the memory unit. The data stored in this memory unit is displayed and output by the display output means.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

The database 1 is connected to a host computer 2 so that various data can be searched and read by accessing the host computer 1. A plurality of reading terminal devices 3 are connected to the host computer 2 via communication lines N.

In addition, in the drawing, the reading terminal bag @3 is shown as one unit. This reading terminal W3 has the function of issuing a data request command to the host computer 2, and receiving data returned in response to this data request command and sending it to the memory controller 4. Specifically, it includes a keyboard 5, a CRT display device 6, a terminal control section 7, and the like. The memory controller 4 receives data from the terminal control unit 7 and stores it in a memory unit, for example, a RAM (random access memory) in an IC card 8. Note that this IC card 8 stores an ID number determined for each operator.

On the other hand, 10 is a display output means, which has a function of reading data stored in the IC card 8 and displaying it. Specifically, a memory controller 11 that reads data stored in the IC card 8;
It is comprised of a display control section 14 and a keyboard 15, which receive data read out by the memory controller 11 and send it to the CR7 display device 12 and printer 13. In addition,
16 is a printout.

Next, the operation of the apparatus configured as described above will be explained.

First, the IC card 8 is set in the memory controller 4, and in this state, the ID number is entered manually from the keyboard 5. Here, the terminal control unit 7 compares the ID number entered manually with the ID number stored in the IC card 8,
If it is determined that they match, exclusive rights to the host computer 2 are obtained.

Note that if the ID numbers do not match, the host computer 2
You cannot obtain the right to possess the property. Now, when the operator presses a key to request data from the keyboard 5, a data request command is issued from the terminal control unit 7 to the host computer 2, and the requested data is transmitted in the host computer 2 by accessing the database 1. Read out. The data is then sent back from the host computer 2 to the terminal control section 7 and sent to the memory controller 4. Here, in order to obtain the necessary data, the operator manually inputs a data request key indicating the required data from the keyboard 5 at any time.

This allows all the necessary data to be stored in the memory controller 4.
and stored in the RAM in the IC card 8. Then, when the necessary data has been input, the IC card 8
The memory controller 4 is removed. Then, another operator sets another IC card and reads data.

Next, the IC card 8 containing the data is set in the memory controller 11 by the operator. and,
When the ID number is manually input from the keyboard 15, the display control unit 14 compares the input ID number with the ID number stored in the IC card 8, and if it is determined that they match, displays the ID number on the IC card 8. Permission is obtained. Then, when a data display command is entered from the keyboard 15, the display control section 14 issues a display command to the memory controller 11. The memory controller 11 reads each data from the RAM of the IC card 8 and sends it to the display control section 14, and the display control section 14 sends the received data to either or both of the CRT display device 12 and the printer 13. In this way, the necessary data is displayed on the CRT display device and printed out on the printer 13.

In this way, in the above practical example, when a data request is issued to the host computer 2 that has the database 1 and the data is returned to the reading terminal device 3, this data is transferred to the IC card 8 by the memory controller 4. Since the data stored in the IC card 8 is then displayed and outputted by the display output means 1o, the usage time for one operator of the reading terminal device 3 that can access the database 1 is reduced. The process can be significantly shortened and usage rights can be immediately handed over to another operator. Therefore, the usage rate of the reading terminal i location 3 can be improved. In addition, as long as the data stored in the IC card 8 is not erased, it can be displayed and output as many times as needed, eliminating wasteful reading of data, thereby reducing usage fees and the number of communication lines N, making it possible to save money. It is.

Note that the present invention is not limited to the above-mentioned embodiment, and may be modified without departing from the spirit thereof. For example, if the access procedure to the database 1 and the data search items are determined in advance, this information can be displayed on the display output means 1 in advance.
0, etc., in the IC card 8, and then set the IC card 8 in the memory controller 4. In this way, a data request can be made from the keyboard 5 to the host computer 2 and the data can be stored in the IC card 8 without requiring any human effort to make a data request. Thereby, the usage rate of the device can be further improved. Further, a magnetic card, a memory card, etc. can also be used as the memory unit.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a data retrieval device that can shorten the time required for reading data into a database and improve the usage rate.

[Brief explanation of the drawing]

The figure is a configuration diagram showing an embodiment of a data search device according to the present invention. 1...Database, 2...Host computer,
3... Reading terminal device, 4... Memory controller, 5... Keyboard, 6... CRT display device, 7...
... terminal control unit, 8 ... (C card (memory unit), 10 ... display output means, 11 ... memory controller, 12 ... CRT display device, 13 ... printer, 14 ... -Display control unit, 15...keyboard.

Claims (1)

[Claims] A reading terminal device connected to a host computer that has a database and making a data request to the host computer to receive necessary data stored in the database; A data retrieval device comprising: a memory controller for storing data in a memory unit; and a display output means for reading and displaying data stored in the memory unit.