JPH06283075A - Selector device - Google Patents

Abstract

PURPOSE:To allow several types of adjustment or selective operation only via the displacement or rotational operation of the rotary shaft of a rotary encoder. CONSTITUTION:The displacement of the rotary shaft 22 of a rotary encoder 13 to each end of a cross type guide through-hole 23 is detected with position detecting switches 14 to 17. Information regarding the detected position of the shaft 22 and information regarding the rotation thereof are monitored with a control device, and desired mode is selected among a plurality of types of mode on the basis of the displacement of the rotary shaft 22 of the rotary encoder 13, thereby enabling selective or adjustment operation to be performed in the selected mode on the basis of the rotation of the shaft 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching device which achieves various operations by a combination of one rotary encoder and a plurality of switches, and more particularly, to a rotary shaft displacement of the rotary encoder. The present invention relates to a switching device that turns a switch on and off, and can achieve functions such as output level adjustment of an audio stereo amplifier, left and right level adjustment, sound quality adjustment, and an input signal changeover switch.

[0002]

2. Description of the Related Art FIG. 13 shows a part of a front panel section 71 of a conventional general audio stereo amplifier. Reference numeral 72 denotes an input selector knob, for example, a CD input, a tuner as a selection position. Input, Aux1 input, A
Five input positions of ux2 input and Tape input are set. Reference numerals 73 and 74 are a low-range tone adjusting volume and a high-range tone adjusting volume, respectively.
6 are an output level adjusting volume and a balance adjusting volume, which are formed coaxially.

[0003]

As is clear from the figure, in the conventional device, for example, the basic functions of an amplifier are input signal selection, sound quality characteristic setting, output signal level adjustment, and balance. To make adjustments, it is necessary to place operation knobs corresponding to each adjustment on the entire front panel, which is not only troublesome to operate, but these occupy most of the space on the front panel and make the amplifier itself smaller. There was a difficult drawback.

[0004]

A plurality of setting circuits each having a variable means, pulses output at equal rotation intervals at a rate of a predetermined number per one rotation of a rotary shaft, and rotation direction information indicating a rotation direction are provided. A rotary encoder means for outputting a rotation information signal including the switch means, a switch means for turning on and off in response to displacement of the rotary shaft of the rotary encoder means, and outputting the switching signal, and the switching signal. And the rotation information signal are input, the variable means of a desired setting circuit among the plurality of setting circuits is controlled on the basis of the switching signal, and the rotary means responds to the shaft rotation of the rotary encoder circuit. And a control means for changing the state of the variable means.

[0005]

The rotary encoder is turned on and off depending on the displacement of the rotary shaft of the rotary encoder, and a desired operation is selected from a plurality of adjusting operations or selecting operations according to the switching information. The selected adjustment operation or selection operation is performed in response to the rotation of the rotation shaft of the.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an essential part showing an embodiment of the device of the present invention. In the figure, reference numeral 1 denotes a front panel of an audio stereo amplifier (only a part of which is shown). Inside the amplifier, an X-test is formed behind the front panel, parallel to the panel surface, and integrally formed. -Bull 2 is placed. The X-table 2 is formed with a pair of guide grooves 3 and 4 parallel to the X-axis assumed in the longitudinal direction of the front panel. Reference numeral 5 denotes a Y table which has convex portions 6 and 7 that fit into the guide grooves 3 and 4 on its lower surface and is slidably held on the X table 2 along the X axis. Is a pair of guide grooves 8 parallel to the Y-axis orthogonal to the X-axis,
9 is formed.

Numeral 10 has ridges 11 and 12 fitted to the guide grooves 8 and 9 on its lower surface, and is held XY on the Y table 5 so as to be slidable along the Y axis. A table holds a rotary encoder 13 on its upper surface. Further, at both ends of the guide groove 3 of the X table 2, Y
A pair of position detection switches 14 and 15 for detecting that the table 5 has been brought to a predetermined position at the end of the moving range.
However, at both ends of the guide groove 8 of the Y table 5, the XY table is
A pair of position detection switches 16 and 17 for detecting that the bull 10 has been brought to a predetermined position at the end of the moving range are arranged.

Further, between the X-table 2 and the Y-table 5, a pair of springs 18 and 19 are stretched and stretched at positions facing each other in the moving direction of the Y-table 5, and also Y-table.
A pair of springs 20 and 2 are provided between the table 5 and the XY table 10 at opposite positions in the moving direction of the XY table.
1 is stretched and compressed. This allows
Each table is configured so as to be biased to a reference position located substantially in the center of the guide groove.

When each table is in this reference position, the rotary shaft 22 of the rotary encoder 13 penetrates through a cross-shaped through guide hole 23 formed in the front panel 1 to the outside of the amplifier. However, the position is adjusted so as to be located at the return position in the central portion. In the vicinity of each end of the penetrating guide hole 23, as shown in FIG.
re. "," Bass "," Bal. Each display character is written on the front panel surface, and a knob cap 24 is integrally attached to the tip end portion of the rotary shaft 22 of the rotary encoder 13.

In this state, the operator holds the pick cap 24,
When it is operated so as to bring it to the end portion in the direction of the display character "Input" along the guide hole 23, the XY table 10
The rotary encoder 13 held in the same direction moves in the same direction (the direction of arrow D) and eventually stops at the position where the switch 16 is turned on. Similarly, when moving to the end portion in the “Tre.” Direction, the switch 15 turns “Bass”.
When moving to the end of the direction, the switch 14 is turned on, and when moving to the end of the "Bal." Direction, the switch 17 is turned on.

Further, the front panel 1 is provided with a series of indicators. Photodiodes 25 to 29 are arranged in a row on the front panel at equal intervals.
"C" near each photo diode.
D "," Tuner "," Aux1 "," Aux2 ",
And "Tape" silk characters are written, and as will be described later, the photodiode corresponding to the input signal selected according to the input selection operation of the operator is selectively lit. . Further, on the front panel 1, illuminated display characters "Min" 30, "Bal" 31, "Max" are displayed.
32, “Tone” 33, bar graph 34, and index 3
5 and 36 are lit up according to the operation described later.

FIG. 3 is a circuit block diagram for achieving a series of operation functions of the device of the present invention, and the structure thereof will be described first. In the figure, reference numeral 40 denotes a CD input terminal for inputting an audio signal from the CD player, and an input selection switch 45.
It is connected to the fixed terminal of. Similarly, 41 is a Tuner input terminal for inputting an audio signal from the tuner,
Numerals 42 and 43 are aux input terminals for inputting audio signals from other external sound sources, which are respectively connected to fixed terminals of the input selection switch. The movable terminal of the input selection switch 45 is connected to one fixed terminal of the tape changeover switch 46, and the tape output terminal 50 is connected.
It is connected to the. The other input terminal of the tape changeover switch 46 is connected to a Tape input terminal 44 for inputting an audio signal from an external tape deck, and its movable terminal is a left channel input terminal of the level setting circuit section 52. It is connected to 65.

The input selection switch 45 and the tape changeover switch 46 are portions for selecting the input signal of the left channel of the audio amplifier and constitute an Lch input selection section 47. On the other hand, 48 is an Rch input selection section for selecting the input signal of the right channel of the audio amplifier,
Since the configuration is exactly the same as that of the Lch input selection unit 47, description of its internal configuration and each input terminal will be omitted. In addition,
It is assumed that the output lines connected to the output channel 51 and the right channel input terminal 66 of the level setting circuit 52 are drawn from the respective units corresponding to the Lch input selection unit 47.

The input selection section 49 is controlled by a control signal S9 from the control device 57 as described later, and selects a desired signal from the audio signals applied to the respective input terminals. The level setting circuit 5 outputs a pair of line signals S1 and S2 for the left and right channels.
Output to 2. The level setting circuit 52 controls the control signal S1 output from the control device 57 as described later.
The input line signal S controlled by 0
Line level signals S3 and S4 whose levels and balances have been set for 1 and S2 are output. These line level signals S3 and S4 are applied to the respective input terminals of the Tone adjusting circuit 54 via the line amplifier section 53.

The Tone adjusting circuit 54 has a control signal S1 output from a control device 57 as will be described later.
1 controls the level of a predetermined band of the low-pitched sound portion or the high-pitched sound portion of each input signal. The output signals S5 and S6 adjusted here are supplied to the line output terminals 55,
It is output from 56 to the amplifier at the next stage. The tape output terminals 50 and 51 are provided so as to be connected to the input terminals of the external tape deck.

The encoder 13 shown in FIG.
The rotary shaft 22 has a rotor 58 which rotates integrally with the rotor 58, and two rotation detectors 60 and 61 which are arranged in a predetermined positional relationship to output the rotation information of the rotor as a pulse.
It outputs a pair of pulse signals having the number of pulses corresponding to the rotation amount of the. A signal processing circuit 62 for inputting these pulse signals
Is a rotation direction detection signal S12 that changes state between two values of "H" and "L" according to the rotation direction of the rotary shaft 22 of the encoder by known signal processing, and N per rotation of the rotary shaft. Pulse signal S1 for generating pulses at equal rotation intervals at a ratio of
3 is output to the control device 57.

Further, the control device 57 inputs the respective detection signals S14, S15, S16, S17 indicating the ON and OFF states from the respective position detection switches 14, 15, 16, 17 shown in FIG. Is constantly monitored. Further, the control device 57 outputs the control signal S18 to the indicator portion 63 provided on the front panel 1 and controls the indicators provided therein by the procedure described later.

Next, the control device 57 and the input signal selection section 49
The operation performed in cooperation with the indicator unit 63 will be described. The control device 57 has a memory A for the input signal selection unit 49, and the numerical value M stored in this memory.
The control signal S9 corresponding to the value of A is output to the input signal selector 49 to select a desired input signal. That is, each time the numerical value MA changes by 2 units, the switches are switched in a predetermined order. For example, each time the numerical value MA increases by 2, ... CD → Tuner → Aux1 → Aux2 →
Switching from Tape to CD ... sequentially, MA is 2
Every time it decreases ... CD → Tape → Aux2 → Aux1
It is configured to switch in the order of → Tuner → CD. Along with this, only the corresponding photodiodes of the photodiodes 25 to 29 of the indicator portion 63 are turned on. The examples of FIGS. 1 and 3 show the case where the CD input is selected. The relationship between the rotation of the rotary shaft 22 of the encoder and the numerical change of the memory A will be described later.

Next, the controller 57 and the level setting circuit 5
2 and the operation performed in cooperation with the indicator unit 63 will be described. The control device 57 includes a level setting circuit 52.
Control signal S which has two memories B and C for use in the memory and changes in accordance with the numerical values MB and MC stored in this memory.
10 is output to the level setting circuit 52, and the level setting circuit 5
The levels of the left and right input / output signals S1 and S3 of the second channel and the input / output signals S2 and S4 of the right channel are controlled so as to satisfy the following relationship. S3 = K · KL · S1 (1) S4 = K · KR · S2 (2) The relationship shown in FIG. 4 is set between this variable K and the numerical value MB of the memory B, and it is possible to increase or decrease the numerical value MB. Accordingly, the variable K is constructed so as to change into a volume A curve shape.

On the other hand, the variables KL and KR and the numerical value M of the memory C
The relationship shown in FIG. 5 is set between C, and the variables KL and KR are configured to change in response to the change in the resistance value of the balance volume in accordance with the increase / decrease in MC. .
Therefore, the level can be changed from the minimum to the maximum by changing the memory numerical value MB by (5/6) N. This is because the MB changes by one pulse with one pulse of the pulse signal S13, as will be described later.
2 corresponds to a rotation angle of 300 degrees. At this time, the indicator
As shown in FIG. 7, the display unit 63 has a volume in which the display amount of the bar graph 34 changes according to this level change and only the self-illuminated display characters "Min" 30 and "Max" 32 illuminate. It is controlled as much as possible to obtain the adjustment display state.

On the other hand, in the characteristic diagram of FIG. 5, when the memory numerical value MC is (5/12) N, if both KL and KR are set to 1, the pulse signal S13 will be described later.
Since one MC changes by one pulse, the left and right level balance can be adjusted by rotating the rotary shaft 22 of the encoder 150 degrees to the left and right. In addition,
The relationship between the axial rotation of the rotary shaft 22 and the numerical change in each memory will be described later. At this time, the indicator 63 is
As shown in FIG. 8, one illuminated segment of the bar graph 34 changes as it moves from the center to the left and right in response to an increase / decrease in the memory value MC from (5/12) N. The balance adjustment display state in which only the display character “Bal.” 31 and the index 35 are illuminated is controlled.

Next, the controller 57, the tone adjusting circuit 54,
The operation performed in cooperation with the indicator unit 63 will be described. The control device 57 has two memories D and E for the tone adjusting circuit 54, and a control signal S11 that changes according to the numerical values MD and ME stored in this memory.
To the tone adjusting circuit 54 to vary the frequency characteristic of the tone adjusting circuit. As shown in FIG. 6, the frequency characteristics of the tone adjusting circuit 54 are changed separately for the bass portion characteristic and the treble portion characteristic, and the bass portion characteristic is the numerical value MD of the memory D.
BH which has risen the most from the BL characteristic which has been lowered in accordance with the change of
The treble portion characteristic is configured to change in the range up to the characteristic, and the treble portion characteristic is changed in the range from the lowest TL characteristic to the highest raised TH characteristic according to the change of the numerical value ME of the memory E.

Further, the numerical values MD and ME are (5/1)
2) It is configured to have a flat characteristic when N, and each numerical value changes by one pulse of the pulse signal S13 as will be described later, so from this state, the rotary shaft 22 of the encoder is moved to the left and right by 150. It is set so that the tone can be adjusted over the entire range by rotating it once. At this time, the indicator portion 63, as shown in FIG.
One segment that is lit changes as it moves from the center to the left and right according to the increase or decrease of the memory numerical value MD or ME from (5/12) N. Tone display character 33 and index 36 in which each character of arrow, "Tone", and "T", "B" is combined
Is controlled to the tone adjustment display state in which is lit. Furthermore,
"T", depending on whether it is treble adjustment or bass adjustment
One of the letters "B" is selected and lit.

Next, the axial movement of the rotary shaft 22 by the operator,
Or about the operation function that changes according to the axis rotation operation,
Description will be made with reference to the flowchart shown in FIG.
The controller 57 monitors the on / off state of each of the position detection switches 14 to 17 in steps 1 to 4 of the flow in FIG. Therefore, when the rotary shaft 22 of the rotary encoder is in the return position located at the center of the cross-shaped through guide hole 23, each position detection switch is in the OFF state, and the flow reaches step 5. Here, the numerical value MB of the memory B prepared for the volume adjustment is substituted into the memory X, and the volume adjustment mode is set in which the indicator 63 is brought into the volume adjustment display state. Next, the flow reaches step 10, where the pulse signal S13 from the signal processing circuit 62 is monitored. If the operator turns the knob cap 24 to rotate the rotary shaft 22 of the rotary encoder clockwise or counterclockwise, the pulse signal S13 is generated.
Since a pulse appears in the memory, the flow reaches step 13, and the memory X is read according to the rotation direction determined by the signal S12.
The value MX of is increased or decreased by one.

For example, when the operator turns the knob cap 24 clockwise to raise the volume level, the flow moves to step 15 and increments the numerical value MX by 1 to reach the next step 11. Since the numerical value MX of the memory X is substituted into the memory B, the numerical value MB is 1 at this point.
This is an increase. In the next step 12, the control device 57, the level setting circuit 52, and the indicator portion 63 are operated together in this case, and the variable K of the previous equation associated with the change of the memory value MB is changed. The change causes an increase in the levels of the two output signals S3 and S4 of the level setting circuit 53 according to the A curve shown in FIG. At this time, the display amount of the bar graph 34 of the indicator portion 63 changes according to this level change as described above with reference to FIG.

Next, when the operator moves the rotary encoder shaft 22 in the direction of arrow C in order to adjust the left-right level balance, the position detection switch 17 is turned on. At this time, the flow goes through step 4 to step 9
Leading to. Here, a balance adjustment mode in which the numerical value MB of the memory C prepared for balance adjustment is substituted into the memory X and the indicator 63 is brought into the balance adjustment display state. If the operator rotates the rotary shaft 22 in this position in the clockwise or counterclockwise direction, the flow moves to step 11 via step 10, step 13, step 14 or 15 as described above. At this stage, the numerical value MC of the memory C increases or decreases by one.

In the next step 12, the variables KL and KR in the equations (1) and (2) are changed according to the change in the numerical value MC, as described in the explanation of FIG. The balance of the two output signals S3 and S4 of the L channel and the R channel 52 is changed. At this time, the display state of the bar graph 36 of the indicator portion 63 changes in accordance with this balance change, as described above with reference to FIG.

Next, when the operator moves the rotary shaft 22 of the rotary encoder in the direction of arrow B in order to adjust the treble part of the tone, the position detection switch 15 is turned on. At this time, the flow goes through step 2 to step 7, where the numerical value ME of the memory E prepared for the high tone of the tone adjustment is substituted into the memory X, and the indicator 63 is turned on. The tone adjustment display state is entered, and the treble adjustment mode for lighting the letter "T" is set. Further, if the operator rotates the rotary shaft 22 in this position in the clockwise or counterclockwise direction while maintaining the position at this position, the flow proceeds to step 10, step 13, further step 14 or step 15 as described above. 11. At this stage, the numerical value ME of the memory E is reached.
Is increased or decreased by one.

In the next step 12, as described in the description of FIG. 6 above, the treble characteristic of the tone adjusting circuit 54 shown in FIG. The display state of the bar fluff 34 of the touch panel 63 is
It changes as described in FIG. Similarly, when the operator moves the rotary shaft 22 of the rotary encoder in the direction of arrow A in order to adjust the low tone portion of the tone, the position detection switch 14 is turned on. At this time, the flow goes through step 3 to step 8, where the numerical value MD of the memory D prepared for the low tone portion of the tone adjustment is substituted into the memory X, and the indicator portion 63 is turned on. In the low tone adjustment mode, the character "B" is lit in the low tone adjustment mode.

Further, if the operator rotates the rotary shaft 22 in this position in the clockwise or counterclockwise direction, the flow will be changed to steps 10, 13, and 14.
Alternatively, the process proceeds to step 11 via 15 and the numerical value MD of the memory D is increased or decreased by one at this stage. In the next step 12, as described in the explanation of FIG. 6 described above, the bass portion characteristic of the tone adjusting circuit 54 shown in FIG.
The display state of the bar graph 34 of the display unit 63 changes as described with reference to FIG.

When the operator moves the rotary shaft 22 of the encoder in the direction of arrow D to select an input signal, the position detecting switch 16 is turned on. At this time, the flow is
The process proceeds from step 1 to step 6 and the input switching mode is performed in which the numerical value MA of the memory A prepared for the input signal selection section 49 is substituted into the memory X. The operator rotates the axis 2
When 2 is kept in this position and rotated clockwise or counterclockwise, the flow reaches step 11 via step 10, step 13, and then step 14 or 15, and at this stage, the numerical value MA of the memory A is reached. Is increased or decreased by one. The control device 57 then executes the next step 12
The input signal is switched according to the change of the numerical value MA in cooperation with the input signal selection section 49.

As described above, this input signal switching is performed when the numerical value MA is increased or decreased by two,
Explaining with the flow chart of FIG. 10, only when the step 14 or the step 15 is successively performed in two steps to reach the step 12, ... CD → Tuner → Aux1 → Au
x2 → Tape → CD ... direction, or ... CD → Tape
Input signals are selected in the directions of .fwdarw.Aux2.fwdarw.Aux1.fwdarw.Tuner.fwdarw.CD, and at the same time, the corresponding photodiodes of the photodiodes 25 to 29 of the indicator 63 are turned on. As described above, the effective increase / decrease value of MA is set to 2 in order to reduce the sensitivity of the input switching operation with respect to the rotation angle of the shaft, but these settings are appropriately performed as necessary.

It should be noted that in the above-described embodiment, the operator has the rotating shaft 22.
Is configured to achieve a plurality of functions by rotating while maintaining the desired moving positions, but the present application is not limited to this. FIG. 11 shows an arrangement example of a reset switch newly provided to achieve another embodiment. In this case, the rotary shaft 22 of the rotary encoder 13 is configured to be movable in the axial direction to some extent, and the operator pushes the shaft to move the X-axis.
-Reset switch 64 arranged on the Y-table 10
Is configured so that it can be turned on.
Another embodiment in which the reset switch 64 is newly added will be described with reference to the flow chart of FIG.

The same steps as in the flow chart of FIG. 10 have the same number of steps, and steps 0 and 16 are newly added. In this case, when the flow starts, first, the volume adjustment mode is set in step 0, and unless the other switch is pressed, the rotary shaft 2 is kept in this mode.
The updating of the numerical value MB of the memory B according to the rotation of 2 is repeated. From this state, if the operator moves the rotary shaft 22 in the direction of arrow C to turn on the switch 17 once in order to perform the balance adjustment, the flow goes through step 4 to step 9 to reach the aforementioned balance adjustment. It becomes a mode. Step 16 is provided so that even if the switch 17 is turned off thereafter, the balance adjustment mode is maintained without returning to the volume adjustment mode unless the reset switch 64 is turned on. .

That is, in this embodiment, the operator rotates the rotary shaft 22.
, And once the switch corresponding to the desired mode is turned on, the desired mode is maintained even if the rotary shaft 22 is brought back to the return position and the switch is turned off. . Therefore, if the rotary shaft in the return position is rotated under this mode, desired adjustment or input switching can be performed.
Further, when the operator selects another mode from this state, the axis corresponding to the mode may be moved once to turn on the switch, and conversely to the volume adjustment mode. If it is desired to return, it is performed by pressing the shaft 22 and once turning on the switch 64. In the above embodiment, the volume adjusting mode is associated with the return position of the rotary shaft 22 because this mode seems to be used most frequently.

The present application is not limited to the above-mentioned embodiments, but can take various forms. For example, in FIG.
Change the content of the judgment in step 16 to “Is the value of memory-X updated 5 seconds?”
When the adjusting operation is not performed for 5 seconds or longer in any mode other than the volume adjusting mode, the volume adjusting mode may be automatically restored. In this case, it is clear that the reset switch 64 is unnecessary.

In the above embodiment, as shown in FIG.
Although the rotary shaft 22 of the rotary encoder is configured to be movable in the four directions along the cross-shaped through guide hole 23 from the returning position, the present invention is not limited to this and can be moved. The number of adjustment modes can be further increased by further increasing the number of different directions and providing a switch for detecting the movement in that direction.

In the above embodiment, as shown in FIG. 1, the rotary encoder 13 is mounted on the XY table 10 so that the rotary shaft 22 of the rotary encoder 13 is formed in the cross-shaped through guide hole 23. Although the present invention is configured so that it can be displaced, the present invention is not limited to this configuration.
The encoder 13 is fixedly arranged in the amplifier with respect to the front panel 1, and its rotary shaft 22 is freely displaceable by a universal joint so that its distal end portion is freely displaceable. It may be configured to face. In this case, the position detection switches 14 to 17 are
For example, it may be arranged at each end of the penetrating guide hole 23 on the back side of the front panel 1 so as to be directly pressed by the shaft 22 when the shaft 22 is brought to the end.

Further, in the above embodiment, an example in which the present application is applied to an audio stereo amplifier is shown, but the present application is not limited to this, and it may be applied to a tuner or the like. In this case, a tuning mode for station matching, which is most likely to be used, corresponds to the volume adjusting mode, and a band selecting mode and station for selecting frequency bands such as FM and AM. Is a preset selection mode for selecting one of a plurality of stored preset memories, a set selection mode for setting the tuning station to a desired memory among the plurality of memories, and other settings as necessary. The selection modes required for the tuner may correspond to the respective modes of the above-described embodiment, and the rotation of the rotary shaft 22 may be configured to achieve the required operation in each mode. Good.

[0040]

According to the present invention, a desired mode is selected from a plurality of modes by the axial displacement of the rotary shaft of the rotary encoder, and the rotary shaft is rotated to select the desired mode. −
Selection operation or adjustment operation can be performed. Therefore, the operator can achieve several kinds of adjustment operations and selection operations by operating only the rotary shaft of the rotary encoder. Further, the area required on the front panel surface is only the area for covering the moving range of the rotary shaft and the area for disposing the display means which can be designed relatively freely, so that the space efficiency is improved and the size of the device is reduced. Can also contribute to

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining an embodiment of the present invention.

FIG. 3 is a circuit block diagram for achieving the operation of one embodiment of the present invention.

FIG. 4 is a diagram for explaining an embodiment of the present invention.

FIG. 5 is a diagram for explaining an embodiment of the present invention.

FIG. 6 is a diagram which is used for describing an example of the present invention.

FIG. 7 is a diagram which is used for describing an example of the present invention.

FIG. 8 is a diagram for explaining an example of the present invention.

FIG. 9 is a diagram which is used for describing an example of the present invention.

FIG. 10 is a flow chart showing the operation of one embodiment of the present invention.
FIG.

FIG. 11 is a diagram which is used for describing another embodiment of the present invention.

FIG. 12 is a flowchart showing the operation of another embodiment of the present invention.

FIG. 13 is a diagram showing a conventional example.

[Explanation of symbols]

 1 Front Panel 2 X Table 5 Y Table 10 XY Table 13 Rotary Encoder 14 Position Detection Switch 15 Position Detection Switch 16 Position Detection Switch 17 Position Detection Switch 22 Rotation Shaft 23 Penetration Guide Hole 25 Photodiode 26 Photodiode 27 Photodiode 28 Photodiode 29 Photodiode 34 Bar graph 45 Input selection switch 46 Tape selection switch 47 Lch input selection unit 48 Rch input selection unit 49 Input Selection Section 52 Level Setting Circuit 53 Line Amplifier Section 54 Tone Adjustment Circuit 57 Control Device 62 Signal Processing Circuit 63 Indicator Section

Claims (4)

[Claims] 1. At least input signal selecting means for selecting one input signal from among a plurality of input signals, and level adjusting means for outputting an output signal obtained by adjusting the signal level of the selected input signal to a desired level. Circuit means including: rotary encoder means for outputting a rotation information signal including pulses output at equal rotation intervals at a predetermined number per rotation of the rotation shaft and rotation direction information indicating a rotation direction. Switch means which is turned on and off in response to the displacement of the rotary shaft of the rotary encoder, and outputs the switching signal, and the switching signal and the rotation information signal are input, and the switch means outputs the switching signal based on the switching signal. Although a plurality of modes including the first mode and the second mode are set, in response to the shaft rotation of the rotary encoder means in cooperation with the input signal selecting means during the first mode. In response, the input signals are sequentially selected, and the selected input signals are responsive to the shaft rotation of the rotary encoder means in cooperation with the level adjusting means during the second mode. And a switching device for changing the level of the switching device. 2. A level adjusting means for outputting an output signal in which a signal level of an input signal is adjusted to a desired level, and a level adjusting means for outputting an output signal in which a signal level of the input signal is adjusted to a desired level in a predetermined frequency band. Circuit means having at least an engine adjusting means and arranged in series, pulses output at equal rotation intervals at a predetermined number of rotations per rotation of the rotating shaft, and rotation direction information indicating the rotation direction. Rotary encoder means for outputting a rotation information signal including: switch means for turning on and off in response to displacement of the rotary shaft of the rotary encoder means to output this switching signal; and the switching means. A signal and the rotation information signal are input, and a plurality of modes including a first mode and a second mode are set based on the switching signal, but the level adjusting hand is set in the first mode. In cooperation with the stage, the level of the audio signal is changed in response to the rotation of the rotary encoder means, and in cooperation with the tone adjusting means in the second mode. And a controller for changing the level of the audio signal in a predetermined frequency band in response to the rotation of the rotary encoder means. 3. With respect to a pair of input signals of the right channel and the left channel, the level of each input signal is changed at the same rate, and the left and right level balance is adjusted to a desired state. A level balance adjusting means for outputting a possible output signal, and a rotation information signal for outputting a rotation information signal including pulses output at equal rotation intervals at a predetermined number per rotation of the rotation shaft and rotation direction information indicating a rotation direction. -Tally encoder means, switch means which is turned on / off in response to the displacement of the rotary shaft of the rotary encoder means and outputs this switching signal, and the switching signal and the rotation information signal are inputted. , A plurality of modes including a first mode and a second mode are set on the basis of the switching signal, but in cooperation with the level balance adjusting means in the first mode, The level of the pair of input signals is changed in response to the shaft rotation of the rotary encoder, and the rotary encoder acts in cooperation with the level balance adjusting means in the second mode. A controller for changing the level balance of the pair of input signals in response to the shaft rotation of the means. 4. A rotation information signal including a plurality of setting circuits each having variable means, pulses output at equal rotation intervals at a predetermined number per rotation of the rotation shaft, and rotation direction information indicating a rotation direction. Rotary encoder means for outputting, and switch means for outputting the switching signal by being turned on and off in response to the rotational axis displacement of the rotary encoder means, the switching signal and the rotation information. A signal is input and the variable means of a desired setting circuit among the plurality of setting circuits is controlled based on the switching signal, and the state of the variable means is responsive to the rotation of the rotary encoder circuit means. And a switching device including a control means for changing.