JPS5922128A - Data input device - Google Patents

Abstract

PURPOSE:To switch and connect plural kinds of keyboard according to the purpose and to use it for one input device by loading a necessary data table from outside. CONSTITUTION:A conversion table, attribute table, etc., containing pieces information necessary for control over a keyboard 1 are loaded into the memory 9 from a host device or external storage device by a control part 7 according to the kind of a connected keyboard 1. Therefore, information matching with a replacing keyboard is reloaded into the memory 9 nearly every time the keyboard 1 is replaced, so various keyboards 1 are connected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a data input device, and more particularly to a data input device suitable for use with various types of keyboards changed as appropriate.

[Technical background of the invention]

A conventional data input device has a keyboard having a key matrix connected by a scan line and a return line, and detects the pressed position of any key on this keyboard and captures key information. Moreover, the pressed key position information is usually finally converted into an internal processing code of the device.

Generally, this code conversion is performed using a built-in conversion table. However, there are many different keyboard layouts depending on the purpose. Specifically, there are those having an array such as a JIS array order type and a book 2/4 array type. Keyboards with these types of key layouts have different numbers of keys, of course, and each key has several pieces of information defined, and these are generally used differently by the shift key, but this information is also the same as described above. Depends on the type of keyboard.

Therefore, it is necessary to prepare various conversion tables on the input device depending on the type of these keyboards.

Conventionally, there are two methods described below as means for preparing the conversion table on the input device.

(1) A method in which the E51 conversion table is fixedly determined depending on the type of keyboard to be connected. (2) There is a method in which the host device loads the conversion table according to the type of keyboard.

[Problems with background technology]

However, method (1) has the drawback that the exchange table as a means of code conversion is fixed in a so-called hardware manner, resulting in a significant lack of flexibility in subsequent operation. Furthermore, the method [F]] is relatively flexible in operation because the exchange table can be loaded depending on the type of keyboard. However, with the conventional method, the device configuration is registered at the time of system design (so-called system generation), and a specific conversion table is loaded onto the human-powered device. There was a drawback that the keyboard could not be connected and used by changing it depending on the purpose. Furthermore, when it is necessary to change the type of keyboard connected to a system that is currently in operation due to a change in the business style, it is possible to make the change by going back to the system generation, but tracing back to this system generation is extremely troublesome. This is not a practical method.

[Purpose of the invention]

In view of the above-mentioned drawbacks, an object of the present invention is to enable a single human-powered device to connect and use several types of keyboards by switching between them according to the purpose, and to make it possible to select the types of keyboards to be connected in a system in operation. The object of the present invention is to provide a data manpower device that can be easily changed.

[Summary of the invention]

The present invention provides a keyboard having an ID response means corresponding to each type of IJ rack and the type thereof, and a keyboard that sends data to the scan line of this keyboard, detects changes in the return line, and recognizes key position information.
A keyboard controller that recognizes D, a memory that stores keyboard attributes and key code conversion table data based on the above ID, and external loading of table data required to the above memory based on the ID recognized by the keyboard controller. An object of the present invention is to obtain a data input device characterized in that it is equipped with a control section for controlling the data input device.

[Embodiments of the invention]

FIG. 1 is a block diagram showing the configuration of an embodiment of the data human power device of the present invention. The keyboard 1 is connected to a keyboard controller 5 by a scan line 2 for transmitting scan information, a return line 3 for transmitting return information, and an input data line 4 for transmitting keyboard input data. This keyboard controller 5 is connected to a control unit 7 by a data line 6.

This control section 7 is connected to a memory 9 through a data line 8, and transmits and receives information to and from a high-level device shown in the figure through a data line 10.

The keyboard 1 has a key matrix and an ID response means corresponding to the type of the key matrix, and indicates the pressed position of a key to the keyboard controller 5 by scan line 2 and return line /3.
Equipped with D response means. The keyboard controller 5 has a function of sending data to the scan line 2 of the keyboard 1, detecting a change in the return line 3, recognizing key position information, and recognizing the ID. The control unit 7 has a function of externally loading table data required into the memory 9 based on the ID recognized by the keyboard controller 5, and also controlling information exchange with a host device. The memory 9 stores information and data necessary for controlling the keyboard, such as a key code exchange table and keyboard attributes, based on the ID. Further, the scan line 2 transmits scan information, the return line 3 transmits return information, the input data line 4 transmits keyboard input data, and the data line 6 transmits information and data between the control unit 7 and the memory 9. The data line 10 transmits information and data between the host device and the control unit 7.

Next, the operation of this embodiment will be explained. The keyboard controller 5 sends scan data to the matrix of the keyboard 1. If a key is pressed on the keyboard 1, a change occurs in the return line, and well-known keyboard control for recognizing key position information is performed. Once the key position information is confirmed, depending on the shift status at that time,
The location information is translated into internal processing code within the input device or of the data processing system. A conversion table serving as this viewing means is prepared in the memory 9.

On the other hand, the keyboard controller 5 reads the keyboard input data from the keyboard 1 and determines various characteristics of the keyboard, such as whether it performs rollover processing, lockout processing, or whether it is a book-type keyboard. Confirmed,
Control is performed based on that. As this confirmation method, an attribute table is similarly prepared in the memory 9. These conversion tables and attribute tables prepared in the memory 9 are as follows:
When the previous keyboard input data is read, the control unit 7
The data is prepared by being loaded into the memory 9 through the data line 10.8 from a host device or an external storage device under the control of the computer.

The keyboard controller 5 and the control unit 7 can manually control the connected keyboard 1 without any inconvenience by using information such as the conversion table and attribute table loaded into the memory 9. That is, information such as various tables to be loaded into the memory 9 depending on the type of the keyboard 1 to be connected is prepared in a host device or an external storage device, and each time the keyboard to be connected is replaced, a new memory is loaded. 9 with information tailored to the keyboard, making it possible to connect various keyboards.

Here, the means for recognizing the keyboard input data may be a method of sending back input data information consisting of several bits by sending an input data read command from the keyboard control means 5, or a method of sending back input data information consisting of several bits, or a method of sending back input data information consisting of several bits. Various methods can be considered, such as a method of notifying the user through a single response line by detecting this, but any method may be adopted.

According to this embodiment, depending on the type of keyboard 1 connected, the control unit 7 stores information such as a conversion table and an attribute table necessary for input control of the keyboard from a host device or an external storage device. 9, it is possible to connect and use several types of keyboards to one input device depending on the purpose.

Furthermore, when changing the type of keyboard to be connected due to a change in the business style of a system in operation, the keyboard can be easily changed without going back to the system generation. Therefore, the operation of the system can be made extremely flexible.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to switch and use several types of keyboards depending on the purpose with one human-powered device, and to change the type of keyboard to be connected in the system in operation. A data human device that can be easily modified can be provided.

[Brief explanation of drawings]

FIG. 41 is a block diagram showing the configuration of an embodiment of the data human power device of the present invention. 1...keyboard, 2...scan line, 311
．． Return line, 4... Input data line, \5... Keyboard controller, 7... Control section,
9...Memory agent Patent attorney Kensuke Chika (and 1 other person)

Claims (1)

[Claims] A keyboard that has ID response means according to each type of IJ Lux, and a keyboard that sends data to the scan line of this keyboard, detects changes in the return line, recognizes key position information, and recognizes the above ID. A controller, a memory in which keyboard attributes and key code conversion table data based on the ID are stored, and a control unit that externally loads required table data into the memory based on the ID recognized by the keyboard controller. A data input device comprising: