JPH0588804A - Romaji input device - Google Patents

Abstract

(57) [Summary] [Purpose] When inputting Roman characters, highlight only valid keys on the keyboard. [Constitution] When inputting Romaji, the Romaji-kana conversion control unit 3 determines a valid / invalid key, and the touch panel display control unit 7 performs normal display / dark display of each key top on the display device 6, After the consonant key is input, only the vowel / modifier key that can follow the consonant is highlighted so that it is possible to prevent the input of a character sequence that is invalid as a Roman character.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Roman character input device such as an information processing device using Roman character input.

[0002]

2. Description of the Related Art In an information processing device using Roman alphabet input, Roman alphabet input has been widely used as a Japanese input means. Romaji input in an information processing device is generally to generate a kana character from a combination of alphabets such as (consonant) + (vowel) or (consonant) + (modifier) + (vowel) from a keyboard.

[0003]

When inputting Roman characters using the keyboard, an invalid character combination may be input due to a typo or the like. For example, the combination "wzr" generally has no meaning as a Roman character. Some devices warn that such a combination is invalid when such a combination is input, but this does not prevent inputting such an invalid combination in advance.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a Roman character input device for preventing invalid input.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a tablet coordinate detecting section for detecting a pressed position when a point on the tablet is pressed, and a corresponding key top from the pressed position detected by the tablet coordinate detecting section. A keyboard simulator for determining and generating an alphabet corresponding to the key top, and a touch panel display control unit for displaying an ASCII layout key top on a display device and controlling normal display / dark display of each key top. , Roman character kana conversion is performed, and at the same time, a valid / invalid key is determined as the next input, and a roman character kana conversion control unit for instructing the touch panel display control unit to perform normal display / dark display, and a finally converted kana character. And a data transmission control unit that transfers data to a host or the like.

[0006]

According to the present invention, when inputting romaji, the valid / invalid key is judged by the romaji-kana conversion control unit,
The touch panel display control unit performs normal / dark display of each key top on the display device.

Specifically, in a device in which a transparent tablet for position input is superimposed on a display device (hereinafter, this device is referred to as a touch panel), when performing romaji input, a vowel that can follow the consonant after the consonant key input. -It is possible to prevent input of a character sequence that is invalid as a Roman character by highlighting only the ornamental sound key.

[0008]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. A touch panel on which transparent position input tablets are stacked is used as a display device. This touch panel is used to simulate an ASCII layout keyboard to perform Roman-Kana conversion, and to emphasize only valid characters, a means to display invalid keys by darkness is used.

FIG. 1 is a block diagram of a circuit configuration according to an embodiment of the present invention. The tablet coordinate detection unit 1 outputs the position of a certain point on the tablet 5 when it is pressed.
The keyboard simulator 2 determines the corresponding key top from the pressed position and generates the alphabet corresponding to the key top. The touch panel display control unit 7 displays the ASCII array key tops on the display device 6 and controls the normal display / dark display of each key top. The Roman character kana conversion control unit 3 performs the Roman character kana conversion, and at the same time determines the valid / invalid key as the next input, and instructs the touch panel display control unit 7 to perform normal display / dark display. The finally converted kana character data is passed through the data transfer control unit 4,
It is transferred to the host etc.

FIG. 2 shows an example of a display screen according to this embodiment.
In FIG. 2A, reference numeral 61 is a temporary display window until the conversion is confirmed. 62 is a drawing of an ASCII array key top.

FIG. 4 is a flow chart showing the operation of the Roman character kana conversion control unit 3 of the above embodiment. In the initial state, only vowels and consonants are valid, so the other keytops are dimmed (S2 / Fig. 2 (a)) and one character input waits (S
3). When "p" which is one of the consonants is input, this "p" is displayed on the display window 61 of the display device 6, and the input state is shown in FIG. 2 (b).

Next, after the vowel / consonant is determined in S4, if it is a consonant, an effective character set following "p" is obtained from the dictionary in S5.
Here, the dictionary 3 is a set of transition information as shown in FIG. From the dictionary, it can be seen that the effective character set following "p" is 5 vowels and 6 "Y" characters, so it is normally displayed, and the other keytops are darkly displayed and highlighted.
(S6). Then, in S7, the process waits for input of any of the six characters of the valid character set highlighted. The state where "Y" is input here is shown in FIG. "Y" is a modifier character (S
8), and obtain the subsequent effective character set from the dictionary (S
9).

As shown in FIG. 3, since only "A", "U" and "O" vowels are allowed after "PY",
The other keytops are darkly displayed (S10), and one character input waits (S11). If "A" is input here, "Pya" is obtained as the conversion result (S12), and the present apparatus is in the initial state diagram 2
Return to (a).

The result of Roman character conversion is transferred to the next host or the like by the data transfer control unit 4.

[0015]

As described above, in the Roman character input device of the present invention, when the Roman character is input, only the valid characters that are allowed are highlighted on the key top, and it is possible to prevent the input of the invalid character sequence as the Roman character. Become. Further, it is possible to display a modified character representing a whispering sound on the display window so that the operator can be made aware of it accurately.

[Brief description of drawings]

FIG. 1 is a block diagram of a circuit configuration according to an embodiment of the present invention.

FIG. 2 is a diagram showing each display example on the display device of FIG.

FIG. 3 is a diagram showing a structural example of a Roman alphabet dictionary of effective character sets used in the present embodiment.

FIG. 4 is a flowchart showing an operation of a Roman character kana conversion control unit in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tablet coordinate detection unit, 2 ... Keyboard simulator, 3 ... Romaji kana conversion control unit, 4 ... Data transfer control unit, 5 ... Tablet, 6 ... Display device, 7 ... Touch panel display control unit, 61 ... Display window, 62 ... ASCII keyboard (drawing).

Claims (1)

[Claims] 1. A tablet coordinate detection unit that detects a pressed position when a point on the tablet is pressed, and a corresponding key top is determined from the pressed position detected by the tablet coordinate detection unit. A keyboard simulator that generates the corresponding alphabets, a touch panel display control unit that displays ASCII layout key tops on the display device, and that controls normal display / dark display of each key top, and at the same time performing Romaji-Kana conversion. Romaji-Kana conversion control unit that determines valid / invalid key as the next input, and instructs the touch panel display control unit to perform normal display / dark display, and data transmission that transfers the finally converted Kana character data to the host etc. A Roman character input device comprising: a control unit.