JPH0588099U - Volume adjustment mechanism - Google Patents

Abstract

(57) [Summary] [Object] To provide a volume adjusting mechanism which can reduce the number of encoders to be used by additionally providing a changeover switch 53 and reduce the cost of an encoder section. In a volume adjusting mechanism in which a volume is set by an encoder 51, a changeover switch 53 is attached to the encoder 51, and a plurality of modes are changed over by operating the changeover switch 53. A volume adjustment mechanism that sets the volume.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a volume adjusting mechanism, and more particularly to a volume adjusting mechanism in which a volume is set by an encoder.

[0002]

[Prior Art]

 FIG. 4A is a front view schematically showing a part related to sound quality and sound field control in the operation panel of the conventional volume adjusting mechanism. In the figure, reference numeral 40 denotes an operation panel, a volume knob 41 is attached to the operation panel 40, and a display screen 42 and a display screen 43 are formed. The sound quality control mode (MID, etc.) is displayed on the display screen 42, and the sound field control mode (hall, live, church, dome, etc.) is displayed on the display screen 43.

FIG. 5 is a side view schematically showing the configuration of the volume knob 41, and reference numerals 51 and 52 in the figure both denote encoders. (A) shows the state at the time of normal operation, (b) has shown the state at the time of PULL lock operation. The encoder 51 is operated in the state of (a), and the encoder 52 is operated in the state of (b).

Next, an operation method of the conventional volume adjusting mechanism will be described with reference to FIGS. 4A and 5. When the volume knob 41 is in the state shown in FIG. 5A, that is, in the normal operation state, the display screen 42 displays the MID sound quality control mode of the sound quality control modes. When the volume knob 41 is rotated in this state, a pulse signal indicating data regarding 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 going to be adjusted up or down, from the phase difference of the pulse signals. Further, the rotation amount 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 obtained volume adjustment direction and volume setting level are displayed on the display screen 42 together with the MID sound quality control mode.

When the volume knob 41 is in the state of 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 regarding the rotation of the volume knob 41 is transmitted from the encoder 52 to a microcomputer (not shown). In the microcomputer (not shown), the volume adjusting direction and the setting level are obtained in the same manner as the processing during 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, the conventional volume adjusting mechanism using the encoder is characterized in that the encoder and the display screen are provided for each control mode.

[0007]

[Problems to be solved by the device]

 In current audio equipment, the number of operation switches / buttons and display screens to be installed is increasing due to the multi-functionality, 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, by displaying the sound quality control mode and the sound field control mode in common on the common display screen 44 as shown in FIG. 4B, the effective space 45 can be secured on the operation panel 40, and the operation panel 40 can be secured. It seems that the space above 40 can be used efficiently. However, in order to commonly use the display screens as described above, it is necessary to newly provide a changeover switch for switching the display screens according to the control mode. In addition, in FIG. 4B, reference numeral 46 indicates a volume knob.

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

By the way, the encoders 51 and 52 are completely the same structurally and functionally, and when one is operated, the other is idle. Therefore, if the switching switch 53 can switch not only the above screen but also the encoder, either one of the encoders 51 and 52 can be omitted. The cost can be reduced. Therefore, if the volume knob 46 can be configured with one encoder and a changeover switch attached, the space on the operation panel 40 can be efficiently used and only one encoder is required. The cost can be reduced as much as possible.

The present invention has been made in view of the above-mentioned problems, and a volume that can reduce the number of encoders to be used by switching the display screen and the encoder operation by a changeover switch and can reduce the cost. The purpose is to provide an adjustment mechanism.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, a volume adjusting mechanism according to the present invention is a volume adjusting mechanism in which a volume is set by an encoder. A switching switch is attached to the encoder, and a plurality of modes are operated by operating the changeover switch. It is characterized in that switching is performed and the volume of a plurality of modes is set by the single encoder.

[0012]

[Action]

 According to the above configuration, a changeover switch is attached to the encoder, a plurality of modes are changed by operating the changeover switch, and a single encoder sets a plurality of modes of the volume. Unlike the conventional volume adjustment mechanism, it is not necessary to provide an encoder for each of the sound quality control mode and the sound field control mode, and the encoder unit can be downsized and cost can be reduced.

[0013]

【Example】

 An embodiment of a volume adjusting mechanism according to the present invention will be described below with reference to the drawings (FIG. 1, FIG. 2, FIG. 3 and FIG. 4B). It should be noted that components having the same functions as those of the conventional example are designated by the same reference numerals.

FIG. 2 schematically shows the configuration of the volume knob in the volume adjusting mechanism according to the embodiment, and (a) shows the state during normal operation (in the sound quality control mode). (B) shows the state during the PULL lock operation (in the sound field control mode). In the figure, 31 indicates a volume knob, and the volume knob 31 is connected to the encoder 51 via a shaft 31 a. A changeover switch 53 is attached to the encoder 51, and the changeover switch 53 is connected to a heart cam 34 which is a push lock mechanism. The volume knob 31 is attached to the operation panel 40 shown in FIG.

FIG. 1 is a circuit configuration diagram schematically showing a volume adjusting mechanism according to an embodiment, in which 51 is an encoder and 53 is a changeover switch. The encoder 51 has three terminals, the terminals 51a and 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 is composed of a transistor 1a, a transistor 1b, switches 1c 1 and 1d. The transistor 1a is arranged at the intersection of the lines T ₁ and K ₁ , the collector of the transistor 1a is connected to the line T ₁ , the emitter is connected to the line K ₁ , and the base is connected to the terminal 51a of the encoder 51. On the other hand, the transistor 1b is arranged 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. ing. The switch 1c is arranged at the intersection of the lines T ₂ and K ₁ , and the switch 1d is arranged at the intersection of the lines T ₂ and K ₂ .

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

The operation of the volume adjusting mechanism 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: Data regarding the rotation of the volume knob 31 is input from the encoder 51 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. The microcomputer 10 detects from the phase difference of the pulse signal the rotation direction of the volume knob 31, that is, whether the volume is about to be adjusted up or down, and the pulse signal is detected. The amount of rotation of the volume knob 31, 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.

Step 2: It is determined whether the changeover switch 53 is turned on. When the change-over switch 53 is turned on, the signal indicating the above-mentioned turn-on is input to the microcomputer 10 from the terminal 53a of the change-over switch 53. When the changeover switch 53 is turned on, it is determined that the volume knob 31 is in the state of (a) shown in FIG. 2, that is, in the normal operation (MID sound quality control mode), and the process proceeds to step 3 and step 4, When the changeover switch 53 is not turned on, it is determined that the volume knob 31 is in the state of (b), that is, in the PULL lock operation (sound field control mode), and the process proceeds to step 5 and step 6.

Step 3 and step 4: Processing relating to the sound quality control mode is performed. The content of the counter 11 is 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).

Step 5 and step 6: Processing regarding 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.) is displayed on the common display screen 44. Is displayed.

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 according to the operation of an operation button / switch other than the volume knob 31 on the operation panel 40 is performed, and then the processing returns to Step 1.

As described above, in the volume adjusting mechanism according to the embodiment, the volume knob 31 is composed of one encoder 51 and the changeover switch 53 attached to the encoder 51, and the changeover switch 53. Since the display screen and control mode are switched by, the number of encoders used can be reduced from two to one compared to the conventional volume knobs 41 and 46. The cost can be reduced, and the encoder unit can be downsized.

[0026]

[Effect of the device]

 As described above in detail, in the volume adjusting mechanism according to the present invention, in the volume adjusting mechanism in which the volume is set by the encoder, a changeover switch is attached to the encoder, and a plurality of modes are switched by operating the changeover switch. Since a single encoder is used to set the volume for multiple modes, it is not necessary to provide an encoder for each sound quality control mode and sound field control mode, unlike the conventional volume adjustment mechanism. Since the number of encoders to be used can be reduced from two to one, cost can be reduced and the encoder unit can be downsized.

[Brief description of drawings]

FIG. 1 is a circuit diagram schematically showing an embodiment of a volume adjusting mechanism according to the present invention.

FIG. 2 is a schematic side view showing a configuration of a volume knob used in the volume adjusting mechanism according to the embodiment,
(A) shows the state at the time of normal operation, (b) has shown the state at the time of PULL lock operation.

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

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

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

FIG. 6 is a schematic side view showing a case where a changeover switch is attached to a conventional volume knob, (a) shows a state at a normal operation time, and (b) shows a state at a PULL lock operation time. There is.

[Explanation of symbols]

 10 Microcomputer 31 Volume Knob 51 Encoder 53 Changeover Switch

Claims (1)

[Scope of utility model registration request] 1. In a volume adjusting mechanism in which a volume is set by an encoder, a changeover switch is attached to the encoder, a plurality of modes are changed over by operating the changeover switch, and a plurality of modes are set by a single encoder. A volume adjusting mechanism characterized in that the volume is configured to be set.