JPS5842488B2 - Kanji input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a kanji input device, in particular a letter key in which a large number of keys are arranged on a board, each key containing a plurality of letters, and a letter key that selects and specifies one of the letters in the letter key. The present invention relates to an input device called a multi-stage shift type or full key set, which consists of a selection key and a letter key and a selection key to input characters.

Generally, a keyboard as shown in FIG. 1 is used in a multi-stage shift type kanji input device.

A keyboard 1 has a large number of keys arranged on a surface 2, and includes, for example, a letter key 3 containing 8 to 15 characters per key, and a selection key 4 for selecting and specifying one of the letters in the letter key 3. , a program function key 5, a function key 6, an item key 7, a control key 8, a hexadecimal key 9, etc. are also arranged.

When inputting a kanji, the operator searches for the letter key 3 that has the desired kanji among the kanji arranged on the board,
Since it is necessary to press and hold the selection key 4 with the right hand and at the same time press and hold the selection key 4 that specifies the desired character within the letter key 3 with the left hand, even if the operator's proficiency improves, the input speed is still 50 to 60 characters/minute. However, there were problems such as difficulty in improving the input speed.

The object of the present invention is to provide a letter key or selection key with an electrical locking mechanism and a lock/lock that disables this mechanism.
An object of the present invention is to provide a kanji input device equipped with a non-lock mode switching means.

The feature of the present invention is that it has two modes: a (non-lock) mode in which the letter key and the selection key are pressed at the same time to input characters, and a (locked) mode in which the combination of characters can be input even if either the letter key or the selection key is pressed separately. In addition, by providing a means to switch between these modes, when in lock mode, the operator can input without being conscious of pressing the letter key and selection key at the same time, even if there is a time difference between the two keys. It is possible to input data at high speed, and by setting it to non-lock mode, even conventional operators can input data without any problems.

The present invention consists of an electronic keyboard such as a Hall element switch or a reed switch, a scan circuit that detects the ON10FF of the key, a four-way/non-lock mode changeover switch, a circuit that temporarily stores the key code, and a program that performs key manual processing. It is configured so that letter keys and selection keys are processed according to the setting mode.

FIG. 2 is a circuit diagram showing one embodiment of the kanji input device according to the present invention.

In the figure, an MPU (microcomputer) 10 is used as the main control unit, and a ROM (read only memory) unit 12, a RAM (random access memory) unit 13, a low-speed interface unit 14, and a KB interface unit 15 are connected to the data bus 11. It is configured.

Note that the display control section 16 is coupled to the RAM section 13.

Control is performed using the microprogram in the ROM section 12 by the MPU 10.
is executed by reading.

Key data from the keyboard 17 is processed by the MPU10, and valid data is sent to the C through the low-speed interface 14.
Transferred to PU.

The storage address of the kanji pattern data from the CPU is calculated by MPUl0 and written into the RAM section.

Sequentially read out the 1-byte kanji pattern in the RAM section 13,
Parallel-to-serial conversion is performed and the video signal is transferred to the CRT monitor 18.

In addition, the kanji keyboard of this device is the same as the board diagram shown in Figure 1, with 12 kanji characters printed on one letter key 3, and when entering a character, press this letter key 3 and one of the 12 characters. This is done by pressing the selection key 4 for selecting one.

There is a lock/non-lock mode designation switch 19 at the top of the keyboard 1, which is set.

FIG. 3 is an electrical circuit diagram of the kanji keyboard and mode switch of the present invention, in which all keys of the key matrix 20 are scanned approximately once every 10 m5.

When any key (01~) is pressed, a coordinate code corresponding to the key is set in the built-in register 21.

At the same time, interrupt flag KIRQ is raised and scanning is stopped.

The main control unit (MPU) 10 is requested to read,
Any keys pressed after that will be ignored.

When the MPU 10 receives an interrupt, the register 21
Load the code.

Scanning, which had been stopped, is restarted as read by MPU10.

Normally, a key is pressed 100m5 to 150m5, so if no other key is pressed, the same key interrupt will come up again.

This is repeated approximately every 10m5 until the key is released.

Therefore, if there is no interrupt of the same key for about 20m5 or more, M
The PU 10 recognizes that the key press has been released.

Figure 4 shows a conceptual diagram of key interrupts.The keyboard key (KKB) is scanning, and when the letter key (L) is pressed, the interrupt signal iRQ goes up and scanning is stopped, and the MPU When the key code is read, the stopped scanning starts.

Note that the interrupt signal indicates that it will rise again after about 10 m5.

For example, when the selection key (S) and the letter key (L) are in the non-lock mode, they are pressed at the same time, but at this time, S and L interrupt the MPU alternately.

In the case of lock mode, S and L interrupt the MPU separately.

The difference between non-lock mode and lock mode is here, so M
When processing keys in the PU, in lock mode, the key code of the letter key (L) that was pressed first is memorized, the key press state is virtually maintained, and the selection key (S) is stored.
The lock is released when is pressed and the combination with the letter key (L) becomes valid.

FIG. 5 shows a flowchart of the key processing operation in the MPU according to the present invention, in which double touch error processing is performed in which a key press is determined based on the rise of the interrupt iRQ twice.

The flag under LOCK turns ON when the KEY code is locked, and turns OFF when there is a double touch error or key buffer registration.

As described above, by equipping the letter key and selection key with an electrical locking mechanism, even if you press the letter key and selection key separately, you can input the combination of characters, and you do not have to keep the letter key pressed with your right hand. You can input the next character at a relatively high speed because you can press the index with your right hand.

Furthermore, by releasing the electrical lock mechanism, conventional operators can also input data without any problems.

The above explanation has been given using an example of an online type kanji input device, but an offline type kanji input device consisting of a kanji keyboard 21, a display section 22, a control section 23, a floppy disk section 24, etc. as shown in FIG. This is also valid for input devices.

The present invention has been explained above using the embodiments. According to the present invention, there is a non-lock mode in which input is made by pressing the letter key and the selection key at the same time, and a non-lock mode in which input is made by pressing the letter key and the selection key at the same time. By providing a lock mode in which combinations of characters can be entered and a means for switching between these modes, in the lock mode, the operator can input at relatively high speed without having to be conscious of pressing the letter key and selection key at the same time. In the case of non-lock mode, the effect of providing a kanji input device that allows conventional operators to input without any problems is significant.

[Brief explanation of the drawing]

FIG. 1 is a plan view for explaining a multi-stage shift type kanji input device, FIG. 2 is a block diagram of the kanji input device according to the present invention, and FIG. 3 is an electric circuit diagram of the kanji keyboard and mode switch according to the present invention. , FIG. 4 is a key interrupt conceptual diagram of the present invention, FIG. 5 is an operation flowchart of the present invention, and FIG. 6 is a diagram showing the configuration of an offline type kanji input device of the present invention. In the figure, 1 is the keyboard, 2 is the board, 3 is the letter key, 4 is the selection key, 5 is the program function key, 6 is the function key, 7 is the item key, 8 is the control key, 9 is the hexadecimal key, 10 is the MPU , 11 is a data bus, 12 is a ROM section, 13 is a RAM section, 14 is a low-speed interface section, 15 is a KB interface section, 16 is a display control section, 17 is a keyboard, 18 is a CRT monitor,
19 indicates a lock/non-lock designation switch.

Claims (1)

[Claims] 1. On a kanji input keyboard consisting of a letter key that stores multiple characters in one key, and a selection key that selects and specifies one of the letters in the letter key, input by pressing the letter key and the selection key at the same time (non-key). A kanji input device characterized by having a (lock) mode and a (lock) mode in which a combination of characters can be input even if either a letter key or a selection key is pressed separately, and a means for switching between these modes. .