KR960003447B1 - Electronic switching apparatus depending on button pressure - Google Patents

Abstract

The switch for varying tuning speed with pushing pressure includes a first means detecting pushing pressure and providing proportional electric signal, a second means detecting tangent of received signal and determining accession speed(width of variation) to objective value, and a third means increasing/decreasing objective value with corresponding width of variation and speed to tangent of determined signal. The first means also includes a pressure sensor detecting the pushing pressure, and an oscillation circuit converting pressure to corresponding frequency.

Description

Electronic switch device depending on the pressure at which the button is pressed

1 is a block diagram of an electronic switch device of the present invention.

Figure 2 a, b is a waveform diagram of the signal according to the pressure in the present invention.

3 is a cross-sectional view of a first embodiment of a button by the electronic switch device of the present invention.

4 is a circuit diagram of an embodiment of the pressure sensing means of the present invention.

5 is a circuit diagram of an embodiment of an amplifying means of the present invention.

6 is a sectional view of a second embodiment of a button by the electronic switch device of the present invention.

A, b, c in Figure 7 is the depth of entry, voltage, frequency characteristics of the button in the present invention.

* Explanation of symbols for main parts of the drawings

1: pressure sensing means 2: amplification means

3: oscillation means 4: processor

The present invention can quickly and easily select any target value desired to adjust volume, channel, tone, contrast, brightness, bass, treble, etc. in various electronic devices such as TV receivers, VCRs, and acoustic devices. It relates to an electronic hand position for facilitating. In particular, it is an electronic switch device that uses a pressure for pressing the button so that the speed of arrival as a specific value to be controlled changes rapidly or slowly as required by an operator according to the pressure of pressing a button. The present invention relates to an electronic switch for changing a volume, tone, and channel in a video device, and in particular, an electronic switch according to the pressure at which a button is pressed to change a control speed of the volume, tone, and channel to be controlled according to the pressure at which the switch button is pressed. Relates to a device.

In a conventional audio / video device, an electronic switch for adjusting the volume, adjusting the tone, or up / down the channel can be controlled using the button switch according to the number of times the button is pressed or the time it is pressed. It is a switch to perform.

For example, in the case of volume, an electronic volume IC (TC9153AP) is provided that gradually changes the volume from the minimum value to the maximum value in steps of 0 to -66 dB in 2 dB steps. The electronic volume is increased or decreased in the above steps.

Therefore, the user has to keep pressing the push button until the desired volume is reached, which is inconvenient to operate quickly and finely to the desired volume.

In other words, when you want to increase the volume to a much louder volume than you are currently listening to, you must keep pressing the volume up button until you reach the target volume.

For example, assuming that the volume can be increased or decreased in a total of 10 steps, and the volume is increased by 1 step when the volume button is pressed for 1 second, the volume is set to the minimum level of the first step. When the volume is increased to the maximum volume of the tenth stage, nine levels must be skipped. Therefore, press and hold the volume button for at least nine seconds to adjust the volume in one second increments from the minimum level of the first stage. , The fourth step ,,,,,, to step ten is to increase.

The same is true when the volume is reduced.

Therefore, the conventional switch device has to wait while pressing a button for a considerable amount of time to reach the target value, which does not satisfy the needs of the user.

This is because the user wants to reach the desired target speed quickly and to the target value with only one touch operation for a while.

As another example of the related art, there is also provided an electronic switch device that increases or decreases the volume by one step according to the number of times the push button is pressed.

Such an electronic switch requires a user to press a button several times until the desired volume is reached to obtain a desired volume.

For example, if the electronic switch that can adjust the volume in 10 steps in total is listening to the sound at the current minimum level and wants to increase it to the 10th level, the maximum volume, press the volume button at least 9 times. The volume can be raised until the tenth step.

Therefore, such a conventional switch device has to wait while pressing a button a few times in order to reach a target value, which does not satisfy the needs of the user.

This is because the user wants to reach the target level quickly and to the target value with only one touch operation for a while.

These electronic switches not only adjust the volume, but also apply the same electronic switch to tone or channel up / down.

As described above, the conventional electronic switches are inconvenient to continuously press the push button to reach the target value desired by the user, or to repeatedly press the button several times, and have to wait until the target value is reached. There is a problem that can not be moved quickly to the desired volume, tone, channel of the target destination, there is a problem that a considerable restriction is accompanied to meet the needs of the user.

In addition, the disadvantage that occurs in the conventional volume control, such as a button requires a long time and several button operation to reach the target value, as well as a way to reduce the inconvenience of the minimum volume and maximum volume of the step The number is being reduced as much as possible.

Therefore, when the volume or the like is changed, the range of change is large and fine adjustment is impossible.

For example, in the above electronic volume switch, since each step has a width of 2dB from 0dB to -66dB, the volume of -2.5dB or -5.3dB cannot be set, and 0dB, -2dB, It can only be adjusted in 2dB intervals, such as -4dB, -6dB, -8dB ,,,, and so on.

This limits the range of volume choices the user can make.

In addition, the conventional electronic switches are difficult to access the target value because the speed of change to reach the target value is constant even when the electronic switch is close to the desired target value.

That is, if the speed of increasing or decreasing the volume can be slowed as the target is approached, the volume and the like can be precisely adjusted and accessed in the vicinity of the target, but the conventional electronic switch does not implement this.

This is compared with being able to accurately stop at a target of stopping by gradually approaching the target to be stopped while gradually receiving a red signal while stopping the vehicle while driving the vehicle.

The present invention solves the conventional problems as described above, and can quickly access various target values such as desired volume, tone, channel, etc., and can adjust the fine steps so that accurate target values can be accessed. An object of the present invention is to provide an electronic switch device according to a pressing pressure.

The electronic switch device of the present invention for achieving the above object has a button which makes a volume value, a tone value, a channel value, or the like a control target value, and when the user presses this button, the number of times the button is pressed or the time that the button is pressed In a switch device of an electronic device that judges and adjusts the volume of a volume, a tone, and a channel, and up / down in response thereto, the pressure of a button pressed by a user is sensed. A first means for outputting an electrical signal proportional to, and outputting the electrical signal as an electrical signal of an inclination proportional to the intensity of pressing the button, and a slope of the pressure sensing signal output from the first means. Second means for determining and determining an approach speed (width of change) of the target value; and a side corresponding to the inclination of the pressure sensing signal determined by the second means. A width and a speed of the pressure switch, the electronic device according to the pressing, characterized in that the means consists of a third to increase or decrease the control target value of the operation button.

Figure 1 shows an embodiment circuit configuration of the present invention for achieving the above object.

That is, the pressure sensing means (1) for outputting the pressure that the user presses the button as an electrical signal proportional to the pressure and the amplifying means for amplifying the pressure sensing signal detected by the pressure sensing means (1) (2), an oscillation means 3 whose oscillation frequency is increased or decreased in response to the signal amplified by the amplification means 2, and an oscillation signal of the oscillation means 3; It is composed of a processor (4) for increasing and decreasing step by step.

The amplifying means 2 can be omitted if the signal level detected by the pressure sensing means 1 and converted into an electrical signal is sufficient to operate the oscillating means 3 at the rear end, and the amplifying means 2 is It can also be configured by intervening for each element that needs to raise the signal level.

For example, the amplification means may be connected to the output terminal of the oscillation means 3 to supply the amplified oscillation signal to the processor 4.

The oscillation means 3 includes a resistor R and a capacitor C for changing the sensitivity of the oscillation frequency.

Effects of the electronic switch device according to the pressure of pressing the button of the present invention configured as described above are as follows.

The pressure sensing means 1 converts the pressure as a mechanical quantity (physical force) at which the user presses a button into a signal of electric quantity and outputs it.

The tilt of the electrical signal output here is proportional to the pressure.

The pressure sensing means 1 uses a metal pressure sensor or a semiconductor pressure sensor as an example, and the semiconductor pressure sensor changes the energy structure in the semiconductor crystal by a force applied from the outside, and is based on a carrier relative change called electron or hole. Therefore, pressure is sensed using an electronic phenomenon in which the resistivity changes, which is different from the piezoelectric effect known in the art.

The semiconductor pressure sensor uses Toyota's PMS / PYS pressure sensor, and is supplied with constant current or constant voltage driving power to drive the pressure sensor.

The pressure sensor of the above example is known to be small, lightweight, high responsiveness, high precision, high sensitivity, long life, excellent temperature characteristics, and can measure positive and negative pressure.

When the pressure sensed by the pressure detecting means 1 is detected (converted) into an electric signal, the signal is amplified by the amplifying means 2 which can amplify the gain and the small signal when the signal strength is very weak.

The signal amplified by the amplifying means 2 is input to the oscillation means 3.

The oscillating means 3 generates and outputs a signal having a frequency corresponding to the pressure sensing signal supplied from the amplifying means 2, and as an example of the output oscillating signal waveform, a voltage controlled pulse oscillator is used. In the case where the pressure at which the button is pressed is weak as shown in a, the number of pulses generated within the same time t is smaller than the number of pulses generated when the button is pressed strongly as shown in b.

Observing the waveform shown in FIG. 2B, two pulses are observed from the moment t0 at which the button is first pressed to the pressure at which the button is gradually increased until a certain time t1, and the interval between these pulses. (Period) is shown long, and as the button is pressed more strongly, it can be seen that a large number of pulses of dense and short period (interval) occur until a certain time t2.

That is, it can be seen that the number (frequency) of pulses generated in accordance with the pressure of pressing the button increases, and the interval (period) of the generated pulses also becomes dense.

This is the effect that the 'pressure: the slope of the pressure detection signal' pressing the button is realized in the relation of the 'pressure: the frequency of the pressure sensing signal' pressing the button.

Therefore, the pulse generated in the oscillation means 3 is supplied to the processor 4, and the processor 4 increases or decreases the control target step by step each time a pulse is input, thereby giving a pulse as shown in a diagram of FIG. When a pulse equal to b is input than when the input is input, the control target is increased or decreased in more steps in the same time T.

In other words, the processor 4 determines the inclination of the pressure: sensing signal as the number of pulses input within the same time, and it can be seen that the control target value is increased or decreased at a speed corresponding to the determined result.

This is because the number of pulses coming in at the same time T is greater in the case of b degree (the greater the pressure at which the button is pressed and increases toward the second half) than in the case of a degree in FIG. Since there are many pulse inputs, in the case of a degree, only four steps are increased or decreased for four pulse inputs. In the case of (b), the target value is increased or decreased in eight steps for eight pulse inputs. The speed at which is reached is only faster at b degrees than at a degree.

Therefore, in the case of increasing the volume, for example, when the pressure to press the button is small, as shown in a, four pulses are input as four pulses are input within the time (T). On the other hand, in the case of b degree, since eight pulses are inputted as eight pulses are input within the same time T, the volume is increased in eight steps, and thus the target volume value is set in a short time. It can be increased.

Even when the volume is reduced, the tone is increased or decreased, and the channel is up / down, the processor 4 executes the same operation to reach the desired target value at high speed.

If the operator recognizes that the target has been approached and changes the pressure of pressing the button weakly, as the pulse interval is widened as shown in a of FIG. 2, the operator gradually approaches the target, so that the intensity of the push can be adjusted quickly and accurately.

3 shows the first embodiment of the button with the electronic switch of the present invention as described above, in the button 7 in which the button 6 is exerted with a spring 6 in the button body 5. A pressure sensor 1A mounted at the end of the shaft 7A to sense the pressure of the button 7 is mounted on the circuit board 8, and the amplification means 2 and the oscillation means 3 are mounted on the circuit board 8; And a terminal 5A on the button body 5 for supplying an oscillation signal to the processor 4, and this embodiment constitutes the pressure sensing means 1 with a pressure sensor 1A. In this embodiment, the pressure sensor 1A, the amplifying means 2 and the oscillating means 3 are modularized and configured on the circuit board 8.

Therefore, in this embodiment, the electronic switch device of the present invention is composed of a button and an integrated device (with necessary components as modules), and the signal sensed by the pressure sensor 1A is the same signal processing in FIG. Since the terminal 5A is output through the process, when the terminal 5A is connected to the processor 4 on the device side, the oscillation signal of the oscillation means 3 can be supplied to the processor 4.

That is, when the user presses the head of the button 7, the button shaft 7A overcomes the elastic force of the spring 6 and enters into the button body 5 so that the end of the button shaft 7A becomes the circuit board 8. The pressure sensor 1A on the phase is pressed.

At this time, the relationship between the depth and pressure at which the button 7 is pressed is as shown in FIG. 7A.

When the pressure sensor 1A is subjected to the pressure as shown in Fig. 7a, the pressure sensor 1A converts the pressure into an electrical signal and outputs it (see Fig. 7b of the output voltage characteristic of the pressure sensor 1A according to the button entry depth). This converted signal is amplified by the amplifying means 2 on the circuit board 8 to convert the frequency of the oscillating means 3 as shown in degrees a or b of FIG. 2 (see also frequency characteristic 7c according to the button entry depth). ), The output pulse of the oscillating means 3 is applied to the processor 4 via the terminal 5A, so that the processor 4, as described above, corresponds to the volume, tone, Adjust the channel, etc.

4 is a circuit of an embodiment of the pressure sensing means 1 using the pressure sensor 1A.

The pressure sensor 1A uses a constant current power supply (1 mA) as a driving circuit, and the driving circuit of the pressure sensor basically includes a constant voltage type and a constant current type. Due to the very small sensitivity change, a constant voltage equation with a simple circuit is suitable, and in the case of the semiconductor strain gauge pressure sensor applied in the present invention, the sensitivity tends to decrease as the temperature rises. Use a constant current drive power supply.

In FIG. 4, OP1 is an operational amplifier, and resistor Rs is a variable resistor for varying the output current. In this circuit, the output current I _B is calculated as I _B = V _Z / S _S , and the power supply voltage ( Vs) requires the relationship of Vs> ( _VZ + R _B × I _B + 2V) (R _B is the internal resistance value of the pressure sensor 1A), and 2 volts in the above formula indicates that the operational amplifier OP1 Minutes.

As shown in FIG. 4, when each circuit constant is set, the output current I _B becomes 1.25 mA-2 mA.

5 is a circuit diagram showing an embodiment of the amplifying means 2 of the present invention including the above-described constant current driving circuit, that is, an amplifying circuit for a semiconductor strain gauge pressure sensor.

In the case of the semiconductor sensor, since the temperature dependence of the bridge output resistance of the pressure sensor 1A is large, it is necessary to pay attention because the change of the output resistance is likely to cause gain or zero drift, and in the circuit of the figure, the bridge (pressure sensor 1A) It is considered that no current flows in and out from the output terminal.

Here, the variable resistor VR1 is a trimmer for span (adjustment of the input voltage span corresponding to the rated output) to be executed in accordance with the increase and decrease of the bridge supply current I _B , and the variable resistor VR2 is a trimmer for zero adjustment.

In the drawing, when the voltage at the output terminals a and b of the bridge is Vab and the operational amplifiers OP2-OP5 are amplified and amplified and output as Vout, Vab = I × ΔR and Vout = Vab × (R1 + R2). / R2

ΔR is a change in resistance value of the pressure sensor 1A that changes with pressure.

As described above, the electric signal according to the changed pressure is amplified by the amplification means and input to the oscillation means 3 to vary the period of the oscillation signal according to the pressure, and the period change of the oscillation signal (pulse as shown in FIG. 2) As described above, the processor 4 performs the increase or decrease of the volume, the adjustment of the tone, and the up / down of the channel by using.

In the present invention, a semiconductor strain gauge pressure sensor is taken as an example of the pressure sensing means 1, but the present invention is not limited thereto, and a metal strain gauge pressure sensor may be employed, and the pressure of the button is converted into an electrical signal. The device can be applied without limitation.

Accordingly, the structure of the buttons, pressure sensor circuits, and amplifier circuits shown and described in FIGS. 3, 4, and 5 are not limited to the illustrated circuits.

The adoption of small size and light weight, simple circuit configuration, and precise operation thereof can provide a more advanced embodiment with the development of technology, and in any case, pressure sensing means, which is an essential component of the present invention, slope Determination means, control means will be included, and an amplification means for appropriately securing the level of the signal will intervene at the appropriate stage.

6 shows the configuration of a button according to a second embodiment of the present invention.

In this embodiment, instead of the semiconductor pressure sensor, the pressure sensing means 1 for sensing the pressure overcomes the elasticity of the spring 6 and enters into the button body 5 with the depth of resistance. A variable resistor 9 is provided so as to change, and the movable shaft 9A of the variable resistor 9 is operated in association with the button shaft 7A.

Therefore, in this embodiment, when the head portion of the button 7 is pressed, the movable shaft 9A of the variable resistor 9 moves forward / backward in response to the depth x of the button shaft 7A. A change in the resistance value corresponding to the pressing force overcoming the elastic force of the spring 6), and the change in the resistance value as described above is a signal across the amplifying means 2, the oscillating means 3, and the processor 4. By carrying out the processing, it is possible to carry out rapid or gentle control of the control target corresponding to the pressure.

As described above, according to the present invention, in order to control digital values such as volume, channel switching, and tone control in an electronic device such as an audio / video device, the control level is rapidly or smoothly reached to a desired target value in proportion to the pressure at which the button is pressed. It is convenient because it reaches the desired level quickly with just one switch operation, so you can execute the control of the device quickly, and you can select the desired state by controlling the volume, tone, and channel in a short time.

In addition, the electronic switch device of the present invention is not limited to the volume, tone, and channel control of the audio / video equipment as described above, and means for selecting numerical values of electronic equipment such as measuring equipment or industrial equipment, and the like. It will be secured in various ways.

Claims (4)

If the user presses this button, the user decides the number of times the button is pressed or the time it is pressed, and controls the increase or decrease of the volume or tone accordingly. In a switch device of an electronic device that performs up / down of a channel, etc., the switch device senses the strength of the pressed pressure of a button operated by a user, and outputs an electrical signal proportional to the detected pressure, and the electrical signal is a button. A first means for outputting the signal as an electrical signal having a slope proportional to the pressing force, and a second speed for determining the contact speed (width of change) to a target value by judging the inclination of the pressure sensing signal output from the first means. The control target value of the button operation is increased or decreased by means of 2 and a change width and speed corresponding to the inclination of the pressure sensing signal determined by the second means. The electronic switch according to the pressure by pressing a button, characterized in that the means consists of a third of that. A pressure sensor for outputting the pressure at which the button is pressed as an electric signal corresponding to the strength of the pressure, and the oscillation frequency is set at a frequency proportional to the detected value of the pressure sensor. Electronic switch device according to the pressure of pressing the button, characterized in that it comprises a oscillating circuit for changing and outputting a pressure sensing signal. According to claim 2, wherein the pressure sensor and the oscillation circuit is embedded in the body of the button in a state electrically connected to the circuit board, the pressure sensor is in contact with the axis end of the button, the sensing by the pressure sensor Electronic switch device according to the pressure to press the button, characterized in that the button body is provided with a terminal for outputting the oscillation signal of the oscillation circuit corresponding to a pressure. The first means comprises: a variable resistor for outputting an electrical signal corresponding to a depth at which a button is pressed, and an oscillation frequency is changed at a frequency proportional to a change in the resistance value of the variable resistor to generate a pressure sensing signal. Electronic switching device according to the pressure of pressing the button, characterized in that comprising an output oscillating circuit.