JP2592960Y2 - Volume device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a volume device .
More specifically, the present invention relates to a volume device in which a volume is set by a rotary encoder.

[0002]

2. Description of the Related Art FIG. 4A is a front view schematically showing a part related to sound quality and sound field control in an operation panel of a conventional volume device . In the figure, reference numeral 40 denotes an operation panel, and a volume knob 41 is provided on the operation panel 40.
Are attached, and a display screen 42 and a display screen 43 are formed. The display screen 42 displays a sound quality control mode (MID or the like), and the display screen 43 displays a sound field control mode (hall, live, church, dome, or the like).

FIG. 5 is a side view schematically showing the structure of a volume knob 41, in which both 51 and 52 indicate encoders. (A) shows the state at the time of the normal operation, and (b) shows the state at the time of the PULL lock operation. In the state (a), the encoder 51 is operated,
In the state (b), the encoder 52 is operated.

Next, an operation method in a conventional volume device will be described with reference to FIGS. When the volume knob 41 is in the state of FIG. 5A, that is, in a normal operation state, the display screen 42 displays M
The ID sound quality control mode is displayed. When the volume knob 41 is rotated in this state, a pulse signal indicating data on the rotation of the volume knob 41 is transmitted from the encoder 51 to a microcomputer (not shown).
A microcomputer (not shown) detects the rotation direction of the volume knob 41, that is, whether the volume knob 41 is about to be adjusted up or down, from the phase difference between the pulse signals. Further, the amount of rotation of the volume knob 41, that is, the level of the volume to be set by the up adjustment or the down adjustment is obtained from the number of pulses of the pulse signal. Then, the determined volume adjustment direction and volume setting level are as follows:
It is displayed on the display screen 42 together with the MID sound quality control mode.

When the volume knob 41 is in the state shown in FIG. 5B, that is, in the PULL lock operation state, the sound field control mode is displayed on the display screen 43. When the volume knob 41 is rotated in this state, a pulse signal indicating data relating to the rotation of the volume knob 41 is transmitted from the encoder 52 to a microcomputer (not shown). In the microcomputer (not shown), the adjustment direction and the set level of the volume are obtained in the same manner as the processing at the time of the normal operation. Then, the obtained volume adjustment direction and set level are displayed on the display screen 43 together with the sound field control mode.

As described above, a conventional volume device using an encoder is characterized in that an encoder and a display screen are provided for each control mode.

[0007]

[Problems to be solved by the present invention] In the current audio equipment, the operation switches and
The number of buttons and display screens is increasing, and it is required to use the space on the operation panel 40 as effectively as possible. Therefore, providing the display screens 42 and 43 for each control mode as described above requires a large space on the operation panel 40, which does not meet the demand. Therefore, if the sound quality control mode and the sound field control mode are commonly displayed on the common display screen 44 as shown in FIG. 4B, an effective space 45 can be secured on the operation panel 40, It seems that the space above 40 can be used efficiently. However, in order to commonly use the display screen as described above, it is necessary to newly provide a switch for switching the display screen according to the control mode. Note that in FIG.
Indicates a volume knob.

FIG. 6 schematically shows a volume knob 46 having a structure in which a changeover switch 53 is added to the volume knob 41. (A) shows the state at the time of normal operation (when the encoder 51 is operated), and (b) shows the state of P
During the UL lock operation (when operating the encoder 52)
The state of is shown. In the case of (a), the control mode displayed on the common display screen 44 is switched to the sound quality control mode by the changeover switch 53, and in the case of (b), the control mode is switched to the sound field control mode.

By the way, the encoders 51 and 52 are completely identical in structure and function, and when one is operated, the other is idle. Therefore, if the changeover switch 53 can switch not only the screen but also the encoder, one of the encoders 51 and 52 can be omitted, and the cost can be reduced accordingly. Can be. Therefore,
If the volume knob 46 can be configured so that a changeover switch is attached to one encoder, the space on the operation panel 40 can be efficiently used, and only one encoder can be used. Cost savings can be achieved.

The present invention has been made in view of the above problems, and provides a volume device capable of reducing the number of encoders to be used by switching between a display screen and an encoder operation by a changeover switch, thereby achieving cost reduction. It is intended to be.

[0011]

In order to achieve the above object, a volume device according to the present invention is provided with a signal according to the rotation of a shaft.
Encoder for outputting a signal, and the rotary encoder
The volume level changes according to the signal from the
Connected to the electronic volume according to the axial position of the shaft
The state changes and the rotary encoder signal is selectively
And a switch for supplying to the plurality of electronic volumes .

[0012]

According to the above arrangement, the plurality of electronic volumes are switched by operating the switch.
Used for each control mode by a single rotary encoder
Since the volume level of the electronic volume to be used is set, it is not necessary to provide an encoder for each of the sound quality control mode and the sound field control mode unlike the conventional volume device , so that the size and cost of the encoder unit can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a volume device according to the present invention will be described below with reference to the drawings (FIGS. 1, 2, 3 and 4 (b)). Note that components having the same functions as those of the conventional example are denoted by the same reference numerals.

FIG. 2 schematically shows the structure of the volume knob in the volume device according to the embodiment. FIG. 2A shows a state during normal operation (in a sound quality control mode). (B) shows a state at the time of the PULL lock operation (at the time of the sound field control mode). In the figure, reference numeral 31 denotes a volume knob, and the volume knob 31 is an axis 31.
It is connected to the encoder 51 via a. A changeover switch 53 is attached to the encoder 51, and the changeover switch 53 is connected to the heart cam 34 which is a push lock mechanism. In addition, volume knob 3
1 is attached to the operation panel 40 shown in FIG.

FIG. 1 is a circuit diagram schematically showing a volume device according to an embodiment. In the figure, reference numeral 51 denotes an encoder, and 53 denotes a changeover switch. The encoder 51 has three terminals. The terminal 51a and the terminal 51b are connected to the key matrix 1, and the terminal 51c is grounded. On the other hand, the terminal 53a of the changeover switch 53 is connected to the microcomputer 10, and the terminal 53b is grounded.

The key matrix 1 includes transistors 1a and 1b, switches 1c and 1d, and the like. The transistor 1a is arranged at the intersection of the lines T ₁ and K _1. The collector of the transistor 1 a is connected to the line T ₁ , the emitter is connected to the line K ₁ , and the base is connected to the terminal 51 a of the encoder 51. On the other hand, the transistor 1b is disposed at the intersection of the lines T ₁ and K ₂ , the collector of the transistor 1b is connected to the line T ₁ , the emitter is connected to the line K ₂ , and the base is connected to the terminal 51b of the encoder 51. . The switch 1c is disposed at the intersection of the line _T 2, _{K 1,} switch 1d is disposed at the intersection of the line _T 2, _{K 2.}

The key matrix 1 includes lines T ₁ and T ₂
And the microcomputer 10 via lines K ₁ and K ₂ , and the microcomputer 10 is connected to electronic volumes 21 and 22. The microcomputer 10 has counters 11 and 12 provided therein. The counter 11 and the electronic volume 21 are used for setting the volume level in the sound quality control mode, and the counter 12 and the electronic volume 22 are used for setting the volume level in the sound field control mode.

The operation of the volume device configured as described above will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the microcomputer 10. Step 1: Volume knob 31 from Enkogu 51
Is input to the microcomputer 10. When the volume knob 31 is rotated, a pulse signal corresponding to the rotation is output from the terminals 51a and 51b of the encoder 51, and the pulse signal is input to the microcomputer 10 via the key matrix 1. In the microcomputer 10, the rotation direction of the volume knob 31, that is, the phase difference of the pulse signal,
It is detected whether the volume is going to be adjusted up or the volume is adjusted, and the volume knob 3 is determined from the number of pulses of the pulse signal.
One rotation amount, that is, the level of the volume to be set by the up adjustment or the gun adjustment is obtained.

Step 2: It is determined whether the changeover switch 53 has been turned on. When the changeover switch 53 is turned on, a signal indicating the ON state is input to the microcomputer 10 from the terminal 53a of the changeover switch 53. When the changeover switch 53 is turned on,
If it is determined that the volume knob 31 is in the state shown in FIG. 2A, that is, in the normal operation (MID sound quality control mode), the process proceeds to steps 3 and 4, and if the changeover switch 53 is not turned on, It is determined that the volume knob 31 is in the state of (b), that is, at the time of the PULL lock operation (sound field control mode), and the process proceeds to steps 5 and 6.

Steps 3 and 4: Processing relating to the sound quality control mode is performed. The contents of the counter 11 are updated based on the data obtained in step 1 (step 3), and then the sound quality control mode MID is displayed on the common display screen 44 (step 4).

Steps 5 and 6: Processing relating to the sound field control mode is performed. The contents of the counter 12 are updated based on the data obtained in step 1 (step 5), and then the sound field control mode (LEVEL display;
Hall, live, church, dome, etc.) are displayed on the common display screen 44.

Step 7: A control signal is transmitted from the microcomputer 10 to the electronic volume 21, and the volume level of the electronic volume 21, that is, the volume level of the sound quality control mode MID is set according to the contents of the counter 11.

Step 8: A control signal is transmitted from the microcomputer 10 to the electronic volume 22, and the volume level of the electronic volume 22, that is, the volume level of the sound field control mode LEVEL is set according to the contents of the counter 12.

Step 9: Other processing, for example, processing corresponding to the operation of an operation button / switch other than the volume knob 31 on the operation panel 40 is performed, and thereafter, the process returns to step 1.

As described above, in the volume device according to the embodiment, the volume knob 31 is constituted by one encoder 51 and the changeover switch 53 attached to the encoder 51, and the display screen is changed by the changeover switch 53. Is switched and the control mode is switched, so that the number of encoders used can be reduced from two to one as compared with the conventional volume knobs 41 and 46, and the cost can be reduced accordingly. And the size of the encoder unit can be reduced.

[0026]

As described above in detail, in the volume device according to the present invention, a signal corresponding to the rotation of the shaft is output.
A rotary encoder and a signal from the rotary encoder
Multiple electronic volumes whose volume level changes according to
And the connection state changes according to the axial position of the shaft,
The signals of the rotary encoder are selectively transmitted to the plurality of electronic devices.
Have a switch for supplying a volume Runode, as in the conventional volume device, it becomes unnecessary to provide an encoder in each tone control mode and the sound field control mode, the number of encoder used from two to one As a result, the cost can be reduced and the size of the encoder can be reduced.

[Brief description of the drawings]

FIG. 1 is a circuit diagram schematically illustrating an embodiment of a volume device according to the present invention.

FIG. 2 is a schematic side view showing a configuration of a volume knob used in the volume device according to the embodiment, and FIG.
Shows a state at the time of a normal operation, and (b) shows a state at the time of a PULL lock operation.

FIG. 3 is a flowchart showing an operation of the microcomputer.

FIG. 4A shows a part of an operation panel in a conventional volume device, and FIG. 4B shows a part of an operation panel in a volume device according to the embodiment.

5A and 5B are schematic side views showing the configuration of a volume knob in a conventional volume device , wherein FIG. 5A shows a state during a normal operation, and FIG. 5B shows a state during a PULL lock operation.

6A and 6B are schematic side views showing a case where a changeover switch is added to a conventional volume knob, wherein FIG. 6A shows a state during a normal operation, and FIG. 6B shows a state during a PULL lock operation. I have.

[Description of sign]

 10 Microcomputer 31 Volume knob 51 Encoder 53 Changeover switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotary type for outputting a signal according to the rotation of a shaft.
An encoder and a volume level according to a signal from the rotary encoder.
The connection state changes according to the plurality of electronic volumes whose axes change and the position of the shaft in the axial direction.
The signals of the rotary encoder are selectively applied to the plurality of electronic volumes.
And a switch for supplying the
Volume device .