RU2210802C2 - Data input/output system for computer - Google Patents

Abstract

FIELD: typhlo-engineering; alphanumeric data input/output by operators suffering weak sight. SUBSTANCE: system has input characters indication field, keyboard indication field for item-by-item input of characters by using Braille audio-indication system, output device indication field, and also manual handler for character input by using Braille system, output devices, and computer. EFFECT: simplified design of system; enhanced precision of data input. 2 cl, 3 dwg

Description

 The invention relates to tiflotechnics and is intended to enter alphanumeric information into a computer by a person with visual impairment (by an operator), as well as to output this information.

 The computer data input and output system described in this application is applicable for typing alphabet characters, punctuation marks, numbers, and other mathematical symbols in Braille. In the proposed system, data input uses sound and tactile perception of information. Moreover, the urgent task is to simplify the system of input and output of information, improving the accuracy of inputting information, as well as the possibility of error correction.

 A known data entry system for persons with disabilities operating typewriters with a conventional keyboard, Braille typewriters, as well as other machines having programmed control, including manual manipulators, electric power sources, and actuators of typewriters or other typewriters, the control organs of manual manipulators depending from physical influences of the fingers, in a certain sequence, sources of electricity and actuators of typewriters or other typewriters are connected and controlled m input and output data, e.g., a print [1].

 However, this system has significant complexity due to the presence of a special manual manipulator for entering information, as well as low accuracy of information input due to the possibility of erroneous operator actions due to the lack of feedback that allows you to control data entry.

 Closest to the proposed system is a computer data input and output system (prototype) containing a manual manipulator for inputting characters using the Braille system, a tactile field for indicating input characters, an output device and computers, moreover, a manual manipulator for entering characters using the Braille system is connected with control signals with a tactile field of indication of input characters and computers [2].

 The disadvantage of this system is the significant complexity due to the use of a special manual manipulator for entering characters using the Braille system and a special tactile field for indicating characters to be entered using the Braille system, as well as the low accuracy of entering information due to the lack of the possibility of prompt perception of erroneous operator actions.

 The purpose of the invention is to simplify the system through the use of a standard manual manipulator and display field, as well as to increase the accuracy of information input due to sound dial indication and the possibility of prompt correction of incorrectly entered characters.

 To achieve this goal, a computer data input and output system containing a manual manipulator for inputting characters using the Braille system, an indication field for input characters, an output device and a computer, and a manual manipulator for entering characters using a Braille system, is connected by control signals with an indication field for inputting characters and computers, an additional keyboard display field is introduced for element-wise input of characters using the Braille system with sound indication, an indication field of the output device, and a manual manipulator for entering characters about the Braille system is connected by control signals to the keyboard display field for inputting characters using the Braille system and the display field of the output device, while the output of the keyboard display field for inputting characters using the Braille system is connected to the input of the input character display field, the outputs of the keyboard display field for inputting characters In the Braille system, the display fields of input characters and the display fields of the output device are connected to a computer whose output is connected to the output device. Moreover, as a manual manipulator for entering characters using the Braille system, a standard mouse is used, while it is desirable that the indication field of the input characters have audio feedback.

 The proposed computer data input and output system is illustrated by the drawings shown in FIG. 1-3. Figure 1 shows the structural diagram of the proposed system. The image of the display fields on the monitor screen is presented in figure 2, figure 3 - Braille table.

 The data input and output system for a computer (Fig. 1) contains a manual manipulator 1 for inputting characters using the Braille system, an indication field for the keyboard 2 for inputting characters using the Braille system, an indication field for input characters 3, an indication field for output device 4, computer 5 and a device pin 6.

 The proposed system of data input and output for computers works as follows.

 As a manual manipulator 1 for inputting characters using the Braille system, for example, a standard mouse type computer manipulator can be used. The mouse cursor moves around the screen of the computer monitor, which contains a visual image of the keyboard 2 indication field for entering characters using the Braille system, a visual image of the input character display 3 and the image of the display device 4.

 The display area of the keyboard 2 for entering characters using the Braille system (FIG. 2) consists of 8 keys: “lv” (upper left), “hp” (left middle), “ln” (lower left), “pv” (upper right) ), "ps" (right middle), "mon" (lower right) and the keys "Slaughter" and "Space". The display field for input characters 3 is located at the bottom of the monitor screen and visually represents a window in which input characters are displayed. The display field of the output device 4 visually represents one key "Output".

 To position the mouse cursor on the monitor screen, its own sound indication is used for each functional and information virtual keys. When the mouse cursor is on the image of one of the keys listed above, a characteristic sound signal appears.

 After positioning by the sound of the mouse cursor on the key image, the key value is entered. To do this, the button of the manual manipulator is activated, for example, left-clicking. By clicking a mouse button is meant a quick click and release of the mouse button. In this case, the sound accompaniment after a mouse button click stops before moving the mouse cursor to another key.

 Six keys "lv", "hp", "ln", "pv", "ps", "mon" the keyboard display fields 2 are used to enter characters using the Braille system in accordance with the character encoding shown in figure 3. To position the cursor on the image of these six keys, an audio signal is used, for example, a voice signal played by a computer. For example, when the mouse cursor is on the image of the lv key, the name of this lv key is pronounced, when the mouse cursor is on the image of the hp key, ls is pronounced, etc., for the last key, mon. The first letter in the name of the key defines the column in which the key is located, the second - the row to which the key belongs.

 After the end of typing the last element of the character, without changing the position of the cursor, the mouse button is clicked, providing input of the typed character.

Входом таблицы, по которой определяются символы является код символа k(x), а выходом сам символ x. Общий объем таблицы составляет 2⁶=64 байт. Часть адресов в таблице остаются пустыми, т.е. не соответствующими ни одному символу. Такие адреса в таблице могут заполняться символом ошибки, например символом #.The conversion of the symbol code by the Braille system into the symbol value is carried out according to a pre-compiled table recorded in the computer memory. Each of the six keys mentioned above is assigned a weight numerically equal to two in the power corresponding to the number of the pressed key. The character will be determined by the sum of the weights of the keys pressed while typing this character. For example, if keys with numbers n ₁ , n ₂ , ..., which correspond to each of its keys "lv", "hp", etc., were selected to dial some character x, then the code of this character k (x) is calculated by the following formula

The input of the table by which the characters are determined is the character code k (x), and the output is the character x itself. The total size of the table is 2 ⁶ = 64 bytes. Some addresses in the table remain empty, i.e. not matching any character. Such addresses in the table may be filled with an error symbol, for example, the symbol #.

 When the mouse cursor is on the image of the other three function keys “Face”, “Space” and “Output”, a sound signal is also played, for example, a voice signal corresponding to the name of the key: for example, pronounces for the Space key, for the Face and The "conclusion" may be pronounced the full name of these keys, since these keys are usually used much less frequently during operation and their full pronunciation does not significantly affect the speed of entering characters compared to the abbreviated.

 At the end of typing the next character in the Braille system, the character is recorded in the display field of the entered characters 3 on the monitor screen in the Braille system and the usual alphabet, numbers, etc., and the entered character is pronounced by the voice played by the computer.

 In case of incorrect typing of the character code using the Braille system, i.e. a set of code that does not correspond to any of the symbols shown in FIG. 3, the error symbol # is determined from the symbol table, a characteristic error sound signal is heard (for example, the word "error" is pronounced) and nothing is recorded in the display field of input symbols 3 on the monitor screen and, accordingly, the name of the symbol is not pronounced.

 The 3 character entered in the display field for input characters can be deleted and another character entered again. To erase a character, use the "Slaughter" function key.

 To output to the output device the information typed in the display field of input characters 3, the function key "Output" is used. As an output device, for example, a flat printer, a dot dot printer, a display or a braille line, etc. can be used.

 To implement the proposed system, the implementation of the possibility of sound (voice) accompaniment of events related to the movement of the mouse cursor and mouse click is of no small importance.

 The described system uses an IBM PC compatible computer running Windows-95 and higher with a sound card and speaker installed. Voice files are recorded in advance, for example, from a microphone and can use the standard sound recording function of the operating system, as described in [3].

 For processing events related to the mouse and sound files, the Delphi visual programming environment can be used [4].

 The ability to implement the proposed system of data input and output in a computer is confirmed by the presence of an existing system.

 Note that in the present invention, in contrast to the known system, a computer is used in a standard configuration and no special hardware devices for input and output of data are required. This reduces the complexity of the proposed system.

 The system uses a sound indication of the input characters, allowing you to quickly monitor the correctness of data entry. In addition, the system has a sound indication of erroneous character code dialing using the Braille system and the ability to correct an erroneously entered character, which together increases the accuracy of the input data by reducing operator errors.

 Also, the advantages of the system include the ability to quickly expand and change the set of input characters, for example, quick change of the alphabet language.

 The technical result achieved by the proposed computer data input and output system is to simplify the system, as well as to increase the accuracy of information input.

Sources of information:
1. USSR patent 296311, cl. In 41 j 3/32, publ. 1971.

 2. Patent EPO 0061595, cl. G 09 V 21/00, G 06 F 3/00, publ. 1982.

 3. Bogumirsky B. Encyclopedia of Windows 98. - SPb. Peter Kom., 2000, p. 328.

 4. Arkhangelsk A.Y. Programming in Delphi 5. - M.: Publishing House BINOM CJSC, 2000, p. 883.

Claims (2)

 1. A data input and output system for a computer, comprising a manual manipulator for inputting characters using the Braille system, an indication field of input characters, an output device and a computer, the manual manipulator for inputting characters using a Braille system, is connected by control signals to the display field of the input characters and computers, characterized in that the system comprises a keyboard display field for element-wise input of characters using the Braille system with sound indication for positioning the cursor, an indication field of the output device, when the cursor is on, an audio signal is reproduced, and the manual manipulator for inputting characters using the Braille system is connected by control signals to the keyboard display field for inputting characters using the Braille system and the display field of the output device, while the output of the keyboard displaying field for entering characters using the Braille system is connected to the input of the input displaying field characters, the outputs of the keyboard display field for inputting characters using the Braille system, the display fields of input characters and the display field of the output device are connected to a computer, the output of which is connected to troystvom output.  2. The system according to claim 1, characterized in that a standard mouse is used as a manual manipulator for inputting characters using the Braille system.

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