JPS60247773A - Keyboard - Google Patents

Abstract

PURPOSE:To obtain plural kinds of input with one key and to improve operativity by detecting how many times the key is hit within a specific time. CONSTITUTION:When the key is hit once, a scanning circuit 2 generates a scanning signal for a key matrix 1 at specific intervals. When a key for next candidate selection on the matrix 1 is hit, an encoding circuit 3 detects the key being hit for longer than a keying detection time so as to prevent chattering, an sends out a corresponding code to a bus 4. Further, when the key is hit >=2 times continuously, the circuit 2 generates the scanning signal at specific intervals and when the key for next candidate selection is operated, the circuit 3 detects the key being hit for longer than the detection time. When the key hit for the 1st time and the key hit for the 2nd time are the same and the detection time is shorter than the continuous keying time, the citcuit 3 outputs a code different from that in single keying.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a keyboard for an audio word processor in which one key has multiple functions and the number of keys is reduced.

Conventional configurations and their problems In recent years, the development and spread of Japanese word processors has been remarkable. Most of these word processors either use the Kana-Kanji conversion method or the Romaji-Kanji conversion method.

One of the most important techniques in this conversion method is homophone selection. For example, when inputting ``Niukai'' in Gana input and converting it to Kana-Kanji, ``Publish J, r Regret'',
"High seas", "voyage", "ashfall J", "public money", "renewal"
Of these, the most frequently used kanji is ``public''. At this time, the kanji intended by the keyboard inputter is "public".
If it were "Voyage" instead, it would be selected sequentially using the next candidate key.

At this time, due to the large number of homophones, which is a characteristic of Japanese,
Keyboard users may accidentally press too many next-choice keys. In the case of the previous "Koukai j", many word processor keys are provided with a previous candidate key in order to prevent the user from inputting the next candidate key six times in order to enter "voyage" again.

While the pick and next candidate keys select homonyms in the order shown in FIG. 1, the previous candidate key selects homonyms in the order shown in FIG. Both keys are functionally the same, just the selection order is reversed, so normally the same key has the functions of selecting the next candidate and selecting the previous candidate, and switching between the two is performed by operating the synt key. It will be done.

Recently, a voice word processor that combines a voice recognition device and a word processor has been put into practical use. Since 100% speech recognition is not possible with current technology, if the recognition result is incorrect, the input is re-inputted and the next recognition candidate is selected.

However, if one key is assigned to select the next candidate and the previous candidate for a homophone as described above, it is necessary to prepare another key in order to select the next candidate for speech recognition as described above. there were. If the word processor's display is different from the inputter's intention, the homonym selection and voice recognition R candidate selection are corrected, so it is easier to use if these functions are provided on the same key. The number of keys on the keyboard is also small, making it economical.

OBJECTS OF THE INVENTION An object of the present invention is to provide an audio food processor keyboard that allows multiple types of input to be performed with one key.

Structure of the Invention The present invention provides a key matrix in which keys are arranged in a matrix, a scan circuit that generates a scan signal for the key matrix, and a code corresponding to a key pressed by the scan signal inputted through the key matrix. The keyboard is equipped with an encoding circuit that detects differences in scan signals input due to differences in the way keys are pressed and generates different codes. It is possible to perform multiple types of input using the keys.

DESCRIPTION OF EMBODIMENTS FIG. 3 shows the structure of a keyboard according to an embodiment of the present invention. In FIG. 3, 1 is a key matrix in which keys to be pressed are arranged in a matrix. 2 is a scan circuit that generates a scan signal for the key matrix 1; 3 is an encoding circuit which receives a scan signal and generates a code for a pressed key. 4 is an output bus for outputting the encoded code.

The operation of the keyboard configured as above will be explained.

FIG. 4 shows the case where the key is pressed once. Scan signals are generated from the scan circuit 2 to the key matrix 1 at regular intervals. When the next candidate selection key in key matrix 1 is pressed, the encoding circuit 3 detects whether the key has been pressed for longer than the keystroke detection time to prevent chattering, and generates a code corresponding to the pressed key. Output to output bus 4.

FIG. 5 shows a case where a key is pressed two or more times in succession.

The scan circuit 2 generates scan signals at regular intervals. When the next candidate selection key is pressed, the encoder circuit 3
Detects whether a key has been pressed for longer than the keystroke detection time. Next, when the key is released, the encoding circuit 3 detects whether the key has been detected for more than an undetected time, and when the key is pressed again, it is detected whether the key has been pressed for more than the key-press detection time. If the first keystroke and the next keystroke are the same, and this detection time is within the continuous keystroke time, the encoding circuit 3 generates a different code from that in the case of a single keystroke.

By checking the time when keys are not pressed, it is possible to distinguish between normal keystrokes and consecutive multiple keystrokes.For example, normal keystrokes can be used to select the next candidate for voice recognition, and consecutive multiple keystrokes can be associated with the next candidate selection for a homophone. You can also input data using the same keys.

Effects of the Invention The present invention provides a highly operable keyboard that can perform multiple types of input with one key by detecting the number of key presses within a certain time without increasing the number of keyboard circuits. be able to.

[Brief explanation of the drawing]

Figures 1 and 2 are sequence diagrams for selecting the next candidate for homophones;
FIG. 3 is a circuit diagram showing the configuration of a keyboard according to an embodiment of the present invention, and FIGS. 4 and 5 are timing diagrams for a method for detecting the number of keystrokes in the embodiment. 1...Key matrix, 2...Scan circuit, 3...Encode circuit, 4...Output bus. Figure 1 updated after Izen / \ Figure 2 Figure 3 Figure 4, n "key, detection Figure 5 illusion and continuation) Ding m Nesuke 5 Hi

Claims (1)

[Scope of Claims] (1) A key matrix in which keys are arranged in a matrix, a scan circuit that generates a scan signal of this key matrix, and a key pressed by the scan signal inputted via the key matrix. A keyboard characterized in that it is equipped with an encoding circuit that generates a code according to the keystroke, and detects a difference in scan signals that are inputted due to a difference in the keystroke method, and generates a different code. 2. The keyboard according to claim 1, wherein the difference in method is a difference in the number of times the key is pressed per unit time. (3) The method according to claim 1 or 2, characterized in that the selection of the next candidate for synonyms and the selection of the next candidate for speech recognition are performed using the same key depending on the moxibustion method. keyboard.