KR100248218B1 - Apparatus for interfacing between braille type panel forming apparatus and computer - Google Patents

Abstract

The document data created by the application program of the computer is stored as a combined ASCII code, and the ASCII conversion unit searches for an ASCII code corresponding to the stored combined ASCII code. The pointed ASCII code is converted into bitmap data corresponding to the one-to-one correspondence of the function keys of the braille board former keyboard by the data converter to directly control the function keys of the keyboard for the braille board former.

Description

Embosser and computer interface

The present invention relates to a braille plate former and an interface device of a computer, and more particularly, to an interface device of a braille plate former and a computer that enables a computer to directly control a keyboard of the braille plate former for forming a braille printing braille plate.

In general, a braille plate former refers to a device for punching a braille on a braille plate (approximately, in the form of an iron plate) so that a blind person can recognize a character, ie, a braille publication. This braille plate former has a keyboard of a completely different type from that of a general personal computer (PC). The keyboard structure of a typical braille board former is shown in FIG.

As shown in FIG. 1, the keyboard of the braille plate former includes six braille keys corresponding to the braille, and a plurality of function keys for controlling various transmission methods of signals transmitted to the braille plate former and the functions of the braille plate former. .

Such braille plate formers have a special operating system (OS) that is incompatible with a typical computer. In addition, the braille plate former is used for a very special purpose for the purpose of use, the price is very expensive. Considering the complexity and difficulty of the character input process through the operating system of the braille board forming machine and the keyboard, it is almost impossible for an individual to have a braille board forming machine in view of the fact that it is very difficult to manufacture the braille plate forming machine.

Therefore, a new braille formation method has been proposed to solve this problem.

That is, the new braille forming method converts characters input from a general computer into braille ASCII codes of common standard, and converts the converted braille ASCII codes into bit map data that can be recognized by the printer. This is a method of printing directly on the recording paper.

However, such a conventional braille formation method causes the following problems.

(1) The method of forming a braille plate through a conventional braille plate forming machine has the advantage of printing a large number of braille publications using the formed braille plate, but the operation method of the keyboard for forming braille on the braille plate is very difficult, Uncomfortable. In other words, the keyboard for the braille board and the keyboard for a general computer are very different in form and input method. Therefore, it is almost impossible for a general user to form braille by manipulating the keyboard of the braille plate former.

(2) The conventional braille forming method through a printer has the advantage of being economical and convenient because only a computer and a printer and a simple control program connecting the printer are provided, but printing a large amount of publications by adopting a printing method through a printer Is impossible. In particular, in order to supply evenly to the visually impaired of many people, it is necessary to print a large amount of Braille publication, which requires a lot of time and effort.

Accordingly, the present invention is to solve such problems, an object of the present invention to directly control the keyboard for the braille plate forming machine through a keyboard for a general computer, to facilitate the operation of the braille plate forming machine and computer To provide an interface device of.

1 is a keyboard structure diagram of a typical braille plate former,

2 is a schematic block diagram showing an interface device of a braille plate former and a computer according to the present invention;

3 is a detailed circuit diagram of a data converter and a switch shown in FIG. 2;

4 is an equivalent circuit diagram of a C-MOS shown in FIG. 3;

5 is a diagram illustrating a braille code table applied to the present invention.

<Description of the code | symbol about the principal part of drawing>

1: CPU 2: Keyboard

3: application 4: memory

5: monitor 6: ASCII conversion unit

7: data conversion section 8: switching element

9: Keyboard for braille board forming machine 10-12: C-MOS

A feature of the present invention for achieving the above object is a keyboard and application program equipped with a central processing unit for controlling each component of the computer as a whole according to a predetermined program and an array of a plurality of user-operable function keys. A braille board former and a computer interface device including a computer including a memory storing various programs to be executed by the central processing unit at the same time that the created document is stored as an ASCII code, and a keyboard for a braille board forming operation of the braille board former. An ASCII conversion unit for converting an ASCII code stored in the memory into a preset pointed ASCII code; A data conversion unit converting the point-evolutionized ASCII code converted by the ASCII conversion unit into bitmap data and outputting the bitmap data; And a switching unit for switching the connection state of various function keys arranged on the keyboard for the braille plate former according to the bitmap data converted by the data conversion unit.

Preferably, the ASCII code comprises a combined ASCII code.

In addition, the ASCII converting unit stores a preset ASCII code and its corresponding inverted ASCII code in the form of a look-up table, compares the ASCII code and the inverted ASCII code from the look-up table, and corresponds to the ASCII code. Retrieves and converts the deciphered ASCII.

Also, the data conversion unit stores the ASCII code and the bitmap data corresponding thereto in the form of a look-up table, compares the ASCII code and the bitmap data from the look-up table, and compares the ASCII data with the bitmap data. The bitmap data corresponding to the code is retrieved and converted.

The braille board control data includes a capacity of at least 8 bits or more corresponding to the braille key, the space key indicating a space, and the enter key indicating the end of a sentence.

The switching unit may include at least one C-MOS to control a state in which one output terminal is connected to any one of the pair of input terminals according to the control signal output from the data converter.

The pair of input terminals include a power supply terminal to which a predetermined level of power is supplied, and a ground terminal connected to the ground.

In addition, the switching unit is connected so that the output terminal has a one-to-one correspondence to a plurality of function keys arranged on the keyboard for the braille plate former, and the function arranged on the keyboard for the braille plate former by either a predetermined level of power or ground potential output from the output terminal. Controls whether keys are operated.

Hereinafter, a preferred embodiment of the braille plate former and the interface device of a computer according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic block diagram showing an interface device of a braille plate former and a computer according to the present invention.

2, the central processing unit 1 generally controls each component of the computer in accordance with a predetermined program.

The keyboard 2 is provided with an array of various function keys for the user to operate.

The application program 3 is a program used by a user for writing a document, and the created document is generally stored in the memory 4 as a combined ASCII code.

The memory 4 stores a document created by an application program, and stores various programs to be executed by the central processing unit 1.

The monitor 5 displays the user's visual confirmation of the document being created or completed using the application program 3, and at the same time displays various operating states of the computer.

The ASCII conversion unit 6 converts the combined ASCII code created and stored in the application program 3 into a preset pointed ASCII code. Here, the ASCII converting unit 6 stores a predetermined braille code table in the form of a look-up table. The ASCII conversion unit 6 compares the combined ASCII code and the occupied ASCII code from the look-up table. Search.

The data converting section 7 converts the pointed ASCII code converted by the ASCII converting section 6 into data in a bitmap form and outputs it.

The switching section 8 is composed of C-MOS and switches the connection state of the various function keys arranged on the keyboard 9 for the braille plate former in accordance with the bitmap data converted by the data conversion section 7.

The braille plate former keyboard 9 is electrically connected to the switching unit 8, and the same control as the state in which the user directly operates various function keys of the braille plate former keyboard 9 by switching control of the switching unit 8. The signal is output to the braille plate former.

3 shows a detailed circuit diagram of the data converter 7 and the switch 8 shown in FIG.

Referring to FIG. 3, the data converter 7 receives parallelized, serialized ASCII code (8-bit binarized data) transmitted from the ASCII converter 6 to the terminals D0 to D7, and compares it with the printed portion of the braille. After converting the data in the form of a bitmap representing a print portion, the control terminals 1A to 1C of the switching section 8 through the output terminals PA0 to PA7, PB0 to PB7, PC0 to PC7 connected to the switching section 8; , 2A to 2C, and 3A to 3C).

The switching section 8 is composed of a plurality of C-MOSs 10 to 12, and the connection relationship between the input terminal and the output terminal where the power terminal and the ground terminal are paired by bitmap data transmitted from the data conversion section 7 Is controlled.

That is, according to the equivalent circuit shown in Fig. 4, the 1X0 terminal connected to the ground and the 1X1 terminal connected to the power supply terminal are connected to the output terminal 1X by the bitmap data 1A output from the data converter 7. The relationship is controlled. This configuration relationship is equally applied to the remaining components of the C-MOS 10 to 12.

In addition, the data converter 7 is provided with a chip (Chip Select) terminal, and the data converter 7 is initialized by a control signal generated from the central processing unit 1. In addition, each C-MOS 10 to 12 of the switching unit 8 is configured with an INH terminal in common, and as the data converter 7 is initialized, the INH terminal of the switching unit 8 has a data converter 7. The control signal output from the input signal is input to initialize the switching section 8. At this time, the initialization state of the data converter 7 refers to a point in time to arrange the data to be transmitted in order to transmit the data in a parallel communication method, and the initialization state of the switching unit 8 is an output terminal of the C-MOS 10 to 12. (1X to 1Z, 2X to 2Z, 3X to 3Z) are all connected to either a power supply terminal or a ground terminal. At this time, if the various operation modes of the switching unit 8 and the keyboard for the braille board forming machine 9 are set to switch from the 'high' edge component to the active state, the initialization state of the switching unit 8 is set to the output terminals 1X to 1Z,. 2X to 2Z and 3X to 3Z are all connected to the power supply terminal.

An operation of the present invention having such a configuration will be described with reference to FIG. 5 as follows.

As the user inputs arbitrary characters through the keyboard 2, the central processing unit 1 outputs an initialization control signal to the CS terminal of the data conversion unit 7 and each INH terminal of the switching unit 8. . As a result, the data converter 7 and the switch 8 are initialized, respectively.

Thereafter, any character entered by the user is represented on the monitor 4 by the application program 3, which is converted into a combinatorial ASCII code by the application program 3, and then stored in the memory 4. do. Then, if all data for any amount is stored, the stored combinational ASCII code is transmitted to the ASCII conversion unit (6).

The ASCII converter 6 converts the converted scrambled ASCII code into an 8-bit binary data by converting the converted scrambled ASCII code corresponding to the input character according to the preset ASCII code conversion rule (Braille code table). The 8-bit binary data is converted and outputted to the data input terminals D0 to D7 of the data conversion section 7.

The data conversion unit 7 substitutes 8-bit binary data input from the ASCII conversion unit 6 into a braille code table as shown in FIG. 5 to determine the braille corresponding to the data, and forms braille. After converting the bitmap data into the print portion and the non-print portion to be transmitted, the control unit 1A to 1C, 2A to 2C, and 3A to 3C of the switching unit 8 are transferred in parallel transmission.

The switching unit 8 is any one of input terminals (for example, 1X0 and 1X1) paired according to the logic state of the control signal inputted through the control terminals 1A to 1C, 2A to 2C, and 3A to 3C. Is connected to an output terminal (e.g., 1X). Accordingly, the signal output by outputting the output terminal has a logic value of logic 'high' or 'low' state, and the logic value is connected so as to correspond one-to-one to each key arranged on the keyboard 9 for the braille plate former.

And, each key arranged in the braille plate former keyboard 9 has the same structure as the structure of FIG. 4 mentioned above, input paired according to the logic signal output through the output terminal of the switching unit (8) By connecting an input terminal of any one of the terminals (for example, a power supply terminal and a ground terminal) and an output terminal directly connected to the braille plate former, an operation signal of the corresponding key is input to the braille plate former. Therefore, the braille corresponding to the character is formed on the braille plate by the braille plate former.

On the other hand, the data conversion unit 7 receives the ASCII code value sequentially received and receives the ASCII code value indicating the end of the data for any portion (one page amount) during the conversion to bitmap data In this case, the relevant data should be saved and closed, the screen displaying the data entered so far should be deleted, and then the input process should be repeated. In this case, the key to be selected in the braille board former 9 should be selected simultaneously with the shift key and the F1 key in the case of a storage operation, and the shift and the page end should be simultaneously selected to delete the screen.

In order to control the input state of such a key, the data converting unit 7 operates according to the following procedure when it receives an ASCII code corresponding to the page closing.

(1) Any port assigned to the page close switches from logic 'high' to logic 'low', and after a predetermined time delay, switches to logic 'high'.

(2) Any port assigned to the shift to store the contents of the screen switches from logic 'high' to logic 'low'. At the same time, any port assigned to F1 switches from logic 'high' to logic 'low', and then transitions back to the logic 'high' state after a predetermined time delay. And any port assigned to the shift switches to logic 'high'.

(3) Any port assigned to the shift to clear the screen switches from logic 'high' to logic 'low'. At the same time, any port assigned to the page end switches from logic 'high' to logic 'low', and then transitions back to the logic 'high' state after a predetermined time delay. And any port assigned to the shift switches to logic 'high'.

In the above three steps, a processing operation corresponding to the ASCII code representing the page finish can be performed.

On the other hand, when the processing operation for an arbitrary amount (one page amount) is finished, the central processing unit 1 outputs a control signal to the CS (Chip Select) terminal of the data conversion unit 7 to convert the data conversion unit 7. At the same time, a control signal is output from the INH terminal of the data conversion section 7 so that the output terminals 1X to 1Z, 2X to 2Z, and 3X to 3Z of the switching section 8 are connected to the power supply terminal and the ground terminal. It is not neutral. Therefore, the data conversion unit 7 and the switching unit 8 recognize that the processing work for an arbitrary amount (one page) is finished.

At this time, the bitmap data output from the data converting section 7 includes the number of keys of the braille board arranged on the keyboard 9 for the braille board forming machine, a space key indicating a space, and an enter key indicating the end of a sentence. Key), a shift key and page end key, and F1, and a capacity of at least 12 bits, which is the sum of the number of INH signals for terminating the system.

On the other hand, as the processing proceeds, the braille is displayed on a monitor for a braille plate former, as shown in FIG. 1, so that the user can easily check it.

As a result, the braille plate former and the interface device of the computer according to the present invention have the following advantages.

That is, a character input through a general computer keyboard is converted into an ASCII code, and a control operation of an arbitrary key corresponding to the ASCII code among the plurality of keys arranged on the braille keyboard former is directly controlled. By doing so, the operation method of the braille plate former is easy, and the braille publication can be printed in large quantities through the braille plate former.

Claims (8)

The central processing unit which controls the overall control of each component of the computer according to a predetermined program, a keyboard equipped with a plurality of user-operated function keys, and a document created by an application program are stored in ASCII code and the central processing unit A braille board former and a computer interface device comprising: a computer including a memory storing various programs to be executed; and a braille board former keyboard for controlling a braille plate forming operation of the braille plate former: An ASCII converter for converting the ASCII code stored in the memory into a preset pointed ASCII code; A data converting unit converting the pointed ASCII code converted by the ASCII converting unit into bitmap data and outputting the bitmap data; And And a switching unit for switching a connection state of various function keys arranged in the braille board former keyboard according to the bitmap data converted by the data conversion unit. The method of claim 1, wherein the ASCII code, A computer interface device between a braille board and a braille board containing a combination of ASCII codes. The method of claim 1, wherein the ASCII conversion unit, The preset ASCII code and the corresponding occupied ASCII code are stored in the form of a look-up table, and the ASCII code and the occupied ASCII code are compared from the look-up table and correspond to the ASCII code. A braille board former and a computer interface device for retrieving and converting the scrambled ASCII. The method of claim 1, wherein the data conversion unit, The scrambled ASCII code and the bitmap data corresponding thereto are stored in the form of a look-up table, and the scrambled ASCII code is compared with the bitmap data from the look-up table. A braille board former and a computer interface device for retrieving and converting the bitmap data corresponding to a code. The method of claim 4, wherein the bitmap data, A braille board former and a computer interface device comprising a braille key, a space key indicating a space, and an enter key indicating the end of a sentence, at least 8 bits corresponding to one to one. The method of claim 1, wherein the switching unit, And at least one C-MOS to control a state in which one output terminal is connected to any one of a pair of input terminals according to the control signal output from the data converter. The method of claim 6, wherein the pair of input terminals, A braille plate former and a computer interface device including a power supply terminal supplied with a predetermined level of power and a ground terminal connected to the ground. The method of claim 6, wherein the switching unit, The output terminal is connected in a one-to-one correspondence with a plurality of function keys arranged in the braille plate former keyboard, and is arranged on the braille plate former keyboard by any one of power or ground potential of the predetermined level output from the output terminal. A braille board former and a computer interface device for controlling the operation of function keys.

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