JPS61133425A - Keyboard - Google Patents

Abstract

PURPOSE:To transmit accurately the required number of codes to be repeated by using a repeat key to start the repeat operation and using a numeric key after the start to designate a required repeat number. CONSTITUTION:The number of codes required to be repeated on a keyboard is designated in advance by operating a key on the keyboard and the required number of codes is transmitted. That is a CPUZ 1A transmits a scan signal to a decoder 2 from an output port 1D according to the program instruction of an ROM 1B. The decorder 2 bring sequentially one of output terminals 10-15 of the decoder to a low level while receiving the scan signal and brings the other terminals to a high level. A microcomputer 1 detects the number of input port being at a low level and discriminates which key is depressed in a key matrix 3 through the combination with the number of the output terminal of the decoder at low level and transmits a code corresponding to the set key to an output port 1F.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a Φ-board trap widely used as an input device in information processing devices.

[Prior art]

Traditionally, keyboards used as input/output devices for information processing devices are automatic keyboards that, when a key on the keyboard is pressed continuously, automatically repeat the code of the pressed key and send it to an external circuit. It has a repeat function. However, this auto-repeat function does not have a means of specifying the number of codes to be repeated and transmitting signals for that number, so it is not possible to use the auto-repeat function by specifying the number of codes to be repeated. 1. If you want to send a specific number of the same code. If you want to send more than the required number of codes or less than the required number of codes during auto-repeat using KVi, , has the disadvantage of very poor work efficiency.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a keyboard having a means for specifying in advance the number of codes that the keyboard needs to repeat by operating keys on the keyboard and transmitting the required number of codes. .

[Structure of the invention]

The keyboard of the present invention includes numeric keys for turning on and off intersections between a plurality of row direction wirings and a plurality of column direction wirings.

a key matrix having character keys and repeat keys;
means for scanning by sequentially applying a predetermined level to the row-direction wiring; and means having an input connected to the column-direction wiring to output a scan response information signal according to the on/off state of the number keys or character keys; means for storing a numeric code corresponding to the scan response information signal by turning on/off the numeric key or character key, and outputting the code only once to an external information processing device; From a trap with a specified number of repeats.

It is characterized by having a step.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a circuit configuration diagram showing an embodiment of the keyboard of the present invention, and FIGS. 2, 3, and 4 are flowcharts showing the operation of the keyboard of FIG. 1. 3 is from rOJ “
10 number keys up to ``9'', 17 characters from ``A'' to rQJ, and one clear JP-33 each.
Return key 32. Repeat keys 31 are arranged in a matrix. The fixed contact terminals of the keys at the intersections of the matrix in each row in the horizontal direction are all commonly connected to the respective decoder terminals 10 to 15, and the matrix in each column in the vertical direction.

All the movable contact terminals of the keys at the intersections of the
・The terminals are connected through the terminals, each connected by a glue resistor 4, and connected to the input port terminals 20 to 24 of the microcomputer 10. The micro combinator 1 includes a main controller 11J consisting of a ROMIB and a CPUIA that reads the program stored in the ROMIB, an AMIC that temporarily stores data from the CPUIA, and a key matrix 3 that scans the key matrix 3 from the CPUIA. Output port) I that sends the signal to decoder 2
D and the input port terminals 20 to 24 input the scan response information signal, and send the scan response information signal to the CPUIA.
#I is made up of an input port Ig for inputting the code from the CPUIA, and an output port IF for inputting the code from the CPUIA.

Next, the operation of transmitting a code corresponding to one turned-on key on the keyboard 3 to an external information processing device will be explained with reference to FIG. According to the program instructions of the OMIB, the CPUIA sends a scan signal from the output ID to the decoder 2.

Upon receiving the scan signal, the decoder 2 sequentially sets one of the decoder output terminals 10.11.12, 13.14.15 to a low level, and sets all other terminals to a high level. For example, if only the number key "8" is pressed, even if terminal 10 goes low level at first, terminal 10 is not connected to the number key r8J, so the input port terminal 20° 21.22 .23 and 24 are all high level, but next time terminal 11 becomes low level,
The input port terminal 22 becomes low level. That is, 1
When one key is pressed and turned on, the input port terminal 20
．． 21, 22, 23, and 24 are connected to one of the output terminals of the decoder 2 through the key contact and become low level (low level).The input port IE outputs this information signal to the microcomputer IK, detects the number of the input port terminal that is at low level, combines it with the number of the output terminal of the decoder that is trapped at low level, and determines which position of the key in key matrix 3 is turned on. Then, the code corresponding to the turned-on key is output (IPK) and transmitted. This code is input from the output interface to the interface port 5, amplified, and output to an external information processing device. When the keyboard kit is turned on and becomes operational, the steps shown in Figure 2.
At step 101, a scan signal is sent to key matrix 3 via output terminals 10 to 15 of decoder 2;
At step 102, it is determined whether one of the numeric keys or character keys is turned on. If neither the number keys nor the letter keys are turned on, Ste.

Step 104 is confirmed, and it is confirmed that the numeric keys and character keys are turned off.
1 and a scan signal is sent to the key matrix. After that, when one of the number keys and letter keys is turned on, the step will start.

The program moves from step 102 to step 103, and the code corresponding to that key is sent to an external information processing device and stored in a register in %RA.

After that, the process moves to step 105, where it is determined whether or not the repeat key is turned on. If the repeat key is not turned on, the process moves to step 104, where the numeric key or letter - that was previously turned on is pressed. It is determined whether or not it is turned off, and if it is not turned off, the process returns to step 105.
The loop of step 105 and step 104 is repeated until the key is turned off, and when it is determined that the middle key is turned off at step 104, which waits for the middle key to be turned off, step A return scan signal is sent to the key matrix (101) and the same operation is repeated.

The above is an operation that sends the code of the pressed number key or letter key once to an external information processing device (but even if you keep pressing the key for a long time, unless you release the key and turn it off fI/ The key code is only sent once to the external information processing device.

When the repeat key 31 (Fig. 1) is pressed in the step 105,
It is determined that the repeat key is turned on, and step 1
Move to 06. Note that the repeat key 31 is a key used only for internal processing of the keyboard, so unlike other keys, when turned on, the code p%' is not transmitted to an external information processing device.

In step 106, the numerical value of the repeat register allocated in R,AMIC (FIG. 1) is set to zero, and the process moves to step 107, in which the number of times a predetermined code is repeated and transmitted to the external information processing device is determined. For example, if ``32'' is selected, it is determined whether or not the number key ``3'' indicating the highest number is turned on. If it is not turned on, the process moves to step 108. In step 108, it is determined whether or not the clearing mode is turned on, and if it is not turned on.

In step 109, which moves to step 109, it is determined whether or not the return key is turned on.

If the return key is not turned on, the process returns to step 107. If the number key "3" is turned on at step 107, the process moves to step 110. In step 110, it is determined that the numerical value stored in the repeat register is zero, and in this case, the number of codes to be repeated and transmitted has not yet been stored in the repeat register, so the numerical value in the repeat register is zero. In step 111, which moves to step 111, the numerical value "3" corresponding to the numeric key trap is stored in the lowest position of the repeat register, and in step 112, which moves to step 112, the numeric key "3" is stored in the lowest position of the repeat register.
It is determined whether or not the number key "3" is turned off. If it is not turned off, the process passes through the loop path 113 and waits for the number key "3" to be turned off. When number key "3" is turned off, clear key 33 (Fig. 1) and return key 32 (first
(Fig.) If both are not turned on, the ST, G108゜1
It passes through the loop of 09.107 and waits for the - in the number "2" next to the number of chords to be repeated to be turned on. Number key "2" is turned on. ! Moving on to ml 10, it is determined whether the numerical value stored in the repeat register is zero, but in this case, the highest numerical value "3" of the number of codes "32" to be repeated and transmitted has already been stored in the repeat register. Since it is stored in , move to step 114. In step 114, the numerical value "3" stored in the repeat register is shifted one digit higher.

Step, move to IIIK. In Stella 7111, the numerical value "3" corresponding to the turned-on numerical key is stored in the lowest digit of the repeat register, and the process moves to step 112. Ste,
When the number key "2" is turned off in the snap 112, the snap 1
After 08, move on to step 109. A series of repetitions "3"
2'' is input and the return key is turned on, it is determined in step 109 whether the return key is turned on or not, and the process moves to step 115. In step 115, the code to be repeatedly transmitted, which was previously stored in the register in step 103, is transmitted once to the external information processing device, and the process moves to step 116. Ste, Gu116
Then, the number of repeats stored in the repeat register is subtracted by "1", and in step 117, it is determined whether the numerical value stored in the repeat register is zero.

If the repeat register value is not zero, step 115
The code is sent once again to the external information processing device. The code is sent to the outside for the number of repeats 32 times stored in advance in the repeat register, and when the value in the repeat register becomes zero in step 1116, step 117
From there, move on to Step 118, go through loop road 119,
Waiting for the return key to be turned off. When the return key is turned on, the series of repeat operations ends and the process moves to step 104.0 If the number of repeats is entered incorrectly, turning on the clear key before turning on the return key will cause the repeat operation to end.
The process moves from step 108 to step 114, and the numerical value stored in the repeat register is set to zero, so the repeat count can then be input again.

As mentioned above, if you do not turn on the return key provided in key matrix 3, even if you continue to turn on other keys, unless you turn it off, the code corresponding to that key will be sent only once. If only the code has been sent and K wants to repeat the code, turn on the repeat key 31 and enter the number of repetitions using the numeric keys, and the code will be repeated to the external information processing device as many times as necessary. Can be sent.

〔Effect of the invention〕

As described above, in the keyboard of the present invention, the repeat operation is started using the repeat key, and after the start, the required number of repeats is specified using the numeric keys, and the code that needs to be repeated is exactly the required number of times. It has the effect of being able to transmit.

[Brief explanation of the drawing]

Fig. 1 is a professional diagram showing an embodiment of the present invention;
Figures 3 and 4 show the operation of the keyboard in Figure 1.
-It's Tiyat. l...Microcomputer, IA...
CP[J. IB...ROM, IC...RAM, ID
, IF...Output port, IE...Input port, IJ...Main side device, 2...Decoder, 3...Key matrix, 4...Gluer, gluing resistor, 5...Interface port, 10.
11.12.13.14゜15...Output terminal,
20.21.22.23゜24...Input port terminal, 31...Repeat key, 32...Return key, 33...Clear key. --“、＼・。 Grass 2 Figure □ ] Go ≧ S ≦ Ku/Is 4/l17 〉 'L-//g 〉

Claims (1)

[Claims] a key matrix having numeric keys, character keys, and repeat keys for turning on and off intersections between a plurality of row direction wirings and a plurality of column direction wirings; means for sequentially applying a predetermined level to the row direction wirings for scanning; A means connected to the column direction wiring for obtaining a scan response information signal according to the on/off state of the numeric keys or character keys, and a numeric code corresponding to the scan response information signal depending on the on/off state of the numeric keys or character keys. means for outputting the code to the external information processing device only once, and by turning on the repeat key and specifying the number of repeats using the numeric keys, the stored numeric code or character code is outputted to the external information by the number of repeats. A keyboard characterized in that it has means for outputting to a processing device.