JPH0264811A - Click tone control circuit - Google Patents

Abstract

PURPOSE:To evade an interference by selecting an objective audible frequency signal and setting a click sound to a tone different from the devices of other persons. CONSTITUTION:A signal generation circuit 1 consists of an oscillation circuit 2 outputting a reference frequency signal f0 and a frequency-dividing circuit 3, and it generates plural kinds of audible frequency signals f1-f4. When '0' and '1' are set as selection data S0 and S1 in a backup memory 2 and on/off data FR is set to '1' in a click sound setting mode, for example, the signal of the frequency f2 passes through a switch 13 and drives a piezo-electric buzzer 12 whenever a key is depressed, whereby the click sound of the tone color corresponding to f2 is generated. Since the tone color of the click sound at the time of depressing the key can freely be set, the interference by the click sound by the operation of an other person is prevented, and therefore the click sound by a one's own operation can securely be identified.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a click tone control circuit that controls the tone of a click sound when a key is pressed.

(B) Prior Art Conventionally, in devices equipped with a plurality of keys, it has often been done to generate a click sound of a specific frequency when a key is pressed so that the press of the key can be confirmed by sound.

Furthermore, as disclosed in Japanese Utility Model Application Publication No. 62-179643, there was also a device in which the generation of such a lick sound could be freely set and canceled as necessary.

(c) Problems to be Solved by the Invention When multiple identical devices are used at close intervals, such as in the same room, in the conventional devices, the click sounds emitted by each device were all the same, so it was difficult for someone else to operate the device. There was a problem in that the click sound generated by the device became a hindrance, making it difficult for the operator to identify the click sound of his or her own device.

(d) Means for Solving the Problems The present invention provides a plurality of keys, a signal generating means for generating plural types of audio frequency signals, and a unique one according to selection data from among the plurality of types of audio frequency signals. a selection means for selecting an audio frequency signal; a setting means for setting the selection data; a game and means for sending the selected audio frequency signal to the sound generation means; By providing a control means for controlling opening and closing, all of the above problems can be solved.

(e) Effect In the present invention, the operator can select a desired audio frequency signal using the setting means, so when using multiple identical devices at close range, the click sound can be set to a different tone from that of other people's devices. , interference can be avoided.

(v) Embodiment FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and (1) shows an oscillation circuit (
2) and a frequency dividing circuit (3), which generates multiple types of audio frequency signals rI, f'z, f's, fa; (4) is an AND gate (5) to (8); , an OR gate (9>), an inverter (10), and (11) a selection circuit that selects one of the frequency signals from B to r4 according to selection data (SO, Sl); (12) is a sounding body; (13) is a switch consisting of an AND gate that sends the only frequency signal selected by the selection circuit (4) to the piezoelectric buzzer (12), (14) is the setting key (15), → key (16), ← key (17).

Keyboard with multiple keys including ↑ key <18) and ↓ key (19), (20) is a control unit, and (21) is a backup memory that stores selection data (So, Sl) and on/off data FR. , (22) and (23) are latch circuits in which selection data (so, St) and switch control data SWC can be set, respectively, (24) is a display control section, and (25) is a display device.

Hereinafter, this embodiment will be described in detail with reference to the flowcharts of FIGS. 2 and 3 and the display example of FIG. 4.

First, press the setting key (15) to enter the click sound setting mode, and press the ↑ key (1B) here.
The control unit (20) changes the selection data (So, SL) in the backup memory (21) to (0°0), (1,
0), (0,1), (1,1), and each time you press the ↓ key (19), (1,1), (0,
1), (1,0).

Decrement sequentially to (0, 0). After these increment or decrements, the updated selection data (so, sl) is set in the latch circuit (22).

On the other hand, the display control section (24) displays the display (0, 0) on the display (25) in accordance with the selection data (30, 31) from the control section (20). The first area (25a) of the bar graph is highlighted, the second area (25b) is displayed when it is (1°0), and the third area (25b) is displayed when it is (0, 1).
25c), 4th area (25d) when (1, 1)
are displayed in reverse video. In other words, the timbre of the click sound can be visually identified by the operator based on the position of the inverted area of Vergelab.

In addition, in the click sound setting mode, when the → key (16) or the ← key (17) is pressed, the control unit (20) inverts the on/off data FR in the backup memory (21), and the display control unit (24) According to the contents of this on/off data FR, the character 'O' appears on the display (25) when 'rl'.
When "N" and "rO" are displayed, the characters "OFF" are displayed. Therefore, when you want to generate a click sound, the display is "OFF".
Operate the key so that the display changes to 'ON', and if you do not want it to occur, operate the key so that the display changes to 'OFF'.

When the setting key (15) is pressed again to return from the click sound setting mode to the normal mode, the control unit (20) stores data in the backup memory (2) every time a key other than the setting key is pressed.
1) Read the on/off data FR in
Check whether it is "l" or "o". If it is "1", rl is sent to the latch circuit (23).

Set the SWC of r□, and after a predetermined time, set the SWC of r
Set. When FR is "0", the SWC is not set to the latch circuit (23).

Therefore, for example, in the click sound setting mode, set (0, 1) as the selection data (SO, SL) and set the FR
If is set to "1", every time a key is pressed, a signal with frequency f passes through the switch (13) and the piezoelectric buzzer (
12) and thus f.

A click sound with a tone corresponding to the key will be generated for a predetermined period of time. Also, if you set FR to "OJ%", that is, set the display to 'OFF', no matter what value the selection data is set to, the audible frequency signal will be blocked by the switch <13), and the click sound will not occur. It disappears.

Furthermore, if the person next to you uses the same device and the click sound has a frequency r, you can set the click sound frequency to another frequency other than f using the key operations described above, and the other person's click will be detected. It becomes possible to confirm the press of a key by the sound without being interfered with by the sound.

By the way, in this embodiment, when the power is turned on, as shown in FIG.
Since the selection data (so, si) is read from , and this read data is set in the latch circuit (22), even if the power is once cut off, a click sound with the same tone as before the cutoff will be generated. .

Effects of the Invention According to the present invention, the tone of the click sound when a key is pressed can be freely set, so even if multiple identical devices are used at close range, the click sound caused by someone else's operation will not interfere with the sound. This makes it possible to reliably identify click sounds caused by one's own operations.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG.
FIG. 3 is a flowchart showing the processing content when a key is pressed in the embodiment, FIG. 3 is a flowchart showing the processing content when the power is turned on in the embodiment, and FIG. 4 is a diagram showing a display example in the embodiment. (1)...signal generation circuit, (2)...oscillation circuit,
(3)... Frequency divider circuit, (4)... Selection circuit,
(13)...Switch, (12)...Piezoelectric buzzer (14)...Keyboard, (20)...Control unit, (21)...Backup memory, (22)(
23)...Latch circuit, (24)...Display control unit, (25)...Display device.

Claims (1)

[Claims] (1) a plurality of keys, a signal generation means for generating a plurality of types of audible frequency signals, a selection means for selecting a unique audible frequency signal from the plurality of types of audible frequency signals according to selection data; The method further comprises a setting means for setting selection data, a gate means for sending the selected audible frequency signal to a sounding means, and a control means for controlling opening and closing of the gate in response to pressing of the key. Features a click tone control circuit.