JP6876136B2 - Volume control method, volume control device and imaging device - Google Patents

Description

The present invention relates to a volume control method for switching a plurality of adjustment items with a switch, and in particular, a volume control method, a volume control device, and a volume control device capable of quickly returning a volume and a level change amount to a 1: 1 state. Regarding the imaging device.

[Conventional technology]
The analog amount adjustment volume used in electronic devices is widely used in various electronic devices because the set value can be adjusted without complicated operations.
Since the conventional adjustment volume requires the same number as the number of adjustment items, the larger the number of adjustment items, the larger the number of volumes must be arranged.
However, electronic devices are required to be miniaturized, and there is a limit to the number of volumes that can be arranged.

Therefore, it has been proposed to overcome the limit of the number of volumes by adjusting a plurality of adjustment items by combining a switch and a volume (for example, Patent Documents 1 and 2 below).

[Related technology]
As related prior arts, Japanese Patent Application Laid-Open No. 08-0085663 "Electronic Volume Expansion Method" (Patent Document 1), Japanese Patent Application Laid-Open No. 2007-251713 "Volume Control Method, Volume Control Device and Imaging Device" (Patent Document 1) There is Patent Document 2).

Patent Document 1 is provided with a switch linked to the input side and the output side of the electronic volume, and when the input signal is switched, the setting information of the electronic volume is held in the memory, and when the input signal is switched to the original input signal, the setting information is stored from the memory. It is shown to be read and set. As a result, a plurality of adjustment items can be realized with one electronic volume.

In Patent Document 2, the level of the adjustment item selected by the switch is read from the memory, the ratio of the level change amount to the unit change amount of the common volume is calculated from the current scale position of the common volume and the read level, and is common. It has been shown to keep the current level in memory when the volume moves up and down. As a result, the entire range of the level of each adjustment item can be covered with a smaller number of volumes than the adjustment item.

In Patent Document 1, since the amount of change in the level with respect to the amount of unit change in the volume is always constant, there are cases where the volume adjustment cannot cover the entire range of the level.
On the other hand, Patent Document 2 proposes a volume control method capable of covering the entire range of the level of each adjustment item with a smaller number of volumes than the adjustment item.

Specifically, in Patent Document 1, if the amount of change in volume and the amount of change in level are always 1: 1, it becomes impossible to control from the minimum value to the maximum value of the level depending on the position of the switched volume.
On the other hand, in Patent Document 2, the change amount of the value is changed with respect to the change amount of the volume.

Japanese Unexamined Patent Publication No. 08-0008663 Japanese Unexamined Patent Publication No. 2007-2517113

However, in the volume control method of the above-mentioned conventional example, in order to return the amount of change in volume and level to 1: 1 it is necessary to set the volume to the maximum (MAX) or the minimum (MIN), and the state is set to 1: 1. There was a problem that it would take time and effort until it became possible.

Further, in Patent Document 2, when the function controlled by the volume is switched by a switch, if the scale of the volume becomes an extremely large position or an extremely small position, the level (set value) is extremely large. When it is very small or extremely large, the level fluctuates greatly with respect to the amount of change in the volume scale, which may cause a larger change than the user expected.

Patent Documents 1 and 2 do not describe that the amount of change in volume and level is quickly returned to 1: 1.
Further, Patent Documents 1 and 2 do not describe preventing unexpected operation due to a large change when the function controlled by the volume is switched by a switch.

The present invention has been made in view of the above circumstances, and when the adjustment function is switched with a switch, the amount of change in volume and level can be quickly returned to 1: 1 and the volume control method can be operated without discomfort. , A volume control device and an imaging device.

Further, in addition to the above object, the present invention makes it possible to prevent unexpected operation due to a large level change and give a stable operation feeling to the user when the function controlled by the volume is switched by a switch. It is a thing.

Above prior art the present invention to solve the problems, switch the plurality of functions in the switch, a control method for controlling the level of Function in a common volume, the scale and level of the relationship between the volume when expressed in plan, scale and level or the vicinity area of the minimum point as a minimum set the near area of the maximum point as a maximum as the midpoint match area, the level before switching of the function switch selects It is stored in memory, and once the switch is switched, when the switch selects the function before switching, the level stored in the memory is read and the point specified by the scale of the level and the current volume is the current point. As the operation point, the trajectory of the operation point is on the line connecting the operation point and the minimum point or the line connecting the operation point and the maximum point, and when the operation point enters the midpoint matching area by operating the volume, it is the minimum. The midpoint of the line in the initial state connecting the point and the maximum point is the trajectory through which the operation point passes, and when the operation point passes through the midpoint, the trajectory of the operation point is on the line in the initial state.

In the above-mentioned volume control method, in the above-mentioned volume control method, the horizontal axis represents the magnitude of the volume scale increasing from left to right, and the vertical axis represents the height of the level increasing from bottom to top. In the above, a steep control prohibition area having a predetermined size is provided in the lower right or upper left of the plane, and when the operation point enters the steep control prohibition area, the trajectory variation from the operation point is restricted.

The present invention stores a switch for switching a plurality of functions, a common volume for controlling the level of a plurality of functions, and a level before the switch is switched for each function in a volume control device, and determines the scale and level of the volume. when showing the relationship in a plane, the scale and level or the vicinity area of the minimum point becomes minimum and a memory that is set to the vicinity area of the maximum point as a maximum as the midpoint matching area, function switch selects Once switched from, when the function before switching is selected, the level stored in the memory is read, and the point specified by the scale of the level and the current volume is set as the current operating point, and the operating point and the minimum point are set. The orbit of the operation point is on the line connecting the operation points or the operation point and the maximum point, and when the operation point enters the midpoint matching area by operating the volume, the initial state connecting the minimum point and the maximum point. It is characterized by having a level adjusting unit that controls so that the midpoint of the line is the trajectory through which the operation point passes, and when the operation point passes through the midpoint, the trajectory of the operation point is on the line in the initial state.

In the above-mentioned volume control device, in the memory, the horizontal axis represents the magnitude of the volume scale increasing from left to right, and the vertical axis represents the level of increasing level from bottom to top. In the plane representing the above, a steep control prohibition area of a predetermined size is provided in the lower right or upper left of the plane, and when the operation point enters the steep control prohibition area, the level adjustment unit changes the trajectory from the operation point. It is characterized by limiting.

The present invention, in the imaging device, and a control device of the Volume, the scale and level of the relationship volume as the plane, and having a display unit for displaying the trajectory of the operating point.

According to the present invention, once the switch is switched, when the switch selects the function before switching, the level stored in the memory is read, and the point specified by the scale of the level and the current volume is the current operation. As a point, the trajectory of the operation point is on the line connecting the operation point and the minimum point or the line connecting the operation point and the maximum point, and when the operation point enters the midpoint matching area by operating the volume, the minimum point Since the volume control method is such that the midpoint of the line in the initial state connecting the and the maximum point is the trajectory through which the operation point passes, and when the operation point passes through the midpoint, the line in the initial state is the trajectory of the operation point. When the function is switched with a switch, the amount of change in volume and level can be quickly returned to 1: 1 and there is an effect that the operation can be performed without discomfort.

According to the present invention, the horizontal axis represents the magnitude of the volume scale that increases from left to right, and the vertical axis represents the height of the level that increases from bottom to top. A steep control prohibition area of a predetermined size is provided in the lower right or upper left, and when the operation point enters the steep control prohibition area, the volume is controlled because the above volume control method is used to limit the trajectory fluctuation from the operation point. When the function is switched with a switch, there is an effect that unexpected operation due to a large level change can be prevented and a stable operation feeling can be given to the user.

It is a block diagram of the structure of this apparatus. It is the schematic which shows the control flow in the level adjustment part in this apparatus. It is the schematic which shows the control flow in the level adjustment part of Patent Document 2. FIG. It is explanatory drawing which shows the control method of Patent Document 2. FIG. It is explanatory drawing which shows the control method of this apparatus. It is a block diagram which shows the application example to a camera system. It is a block diagram which shows the application example to a camera (imaging apparatus).

Embodiments of the present invention will be described with reference to the drawings.
[Outline of Embodiment]
The method of Volume according to an embodiment of the present invention is for controlling the level in a common volume depending on the function switches a plurality of functions in the switch is switched once from the function switch selects When the function before switching is selected, the level stored in the memory is read, and the point specified by the scale of the level and the current volume is set as the current operating point, and the line connecting the operating point and the minimum point is set. Alternatively, the trajectory of the operation point is on the line connecting the operation point and the maximum point, and when the operation point enters the midpoint matching area by operating the volume, the midpoint of the initial state line connecting the minimum point and the maximum point. Is the trajectory through which the operation point passes, and when the operation point passes through the midpoint, the trajectory is returned to the initial state. Therefore, when the function is switched with a switch, the amount of change in volume and level can be quickly changed to 1: 1. It can be returned to 1 and can be operated without any discomfort.

The control method of Volume according to an embodiment of the present invention, when representing the scale and level of relationship of the volume in a plane, the provided abrupt control prohibited area to suppress a rapid change of the level, the operating point Enters the steep control prohibition area, it limits the trajectory fluctuation from the operation point, and when the function controlled by the volume is switched with a switch, it prevents unexpected operation due to a large level change and gives the user It is possible to give a stable operation feeling.

[This device: Fig. 1]
The control device of Volume according to an embodiment of the present invention (the apparatus) will be described with reference to FIG. FIG. 1 is a block diagram of the configuration of this device.
As shown in FIG. 1, this apparatus includes a function A control unit 10, a function B control unit 20, a function Z control unit 30, a volume 40, a switch 41, a switching control unit 42, and a memory 43. I basically have it.
A plurality of function control units are provided between the function B control unit 20 and the function Z control unit 30.

The functions A to Z control units 10 to 30 adjust the level for each of the control targets A to Z.
Function setting values are set in each of the level adjusting units 11 to 31 from the memory 43, and the level to be controlled is controlled.
The switching control unit 42 switches the switch 41 and connects the volume 40 to the selected level adjusting units 11 to 31.

[Each part of this device]
Each part of this device will be described in detail.
The function A control unit 10 is a control unit for the first function A, and includes a level adjustment unit 11 and a control target A12.
The level adjustment unit 11 sets a set value for the function A from the memory 43 according to the function of the control target A, and when the volume 40 is connected, adjusts the level with the set value.

The function B control unit 20 is a control unit for the second function B, and includes a level adjustment unit 21 and a control target B22.
The level adjustment unit 21 sets the set value for the function B from the memory 43 according to the function of the control target B, and when the volume 40 is connected, uses the set value to set the value of the volume 40. Adjust the level accordingly.

The function Z control unit 30 is a control unit for the N (N is an arbitrary integer) th function Z, and includes a level adjustment unit 31 and a control target Z32.
The level adjustment unit 31 sets a set value for the function Z from the memory 43 according to the function of the control target Z, and when the volume 40 is connected, adjusts the level with the set value.

The volume 40 is a common volume for the functions A to Z control units 10 to 30, and the level adjustment units 11 to 31 to be connected can be switched by the operation of the switch 41.
The switch 41 is a selector for switching the connection between each level adjusting unit and the volume 40.

The switching control unit 42 controls the switching of the switch 41. The switching control may be performed by an operation, or may be performed by detecting some signal and automatically performing the switching control.
The memory 43 stores the set values for the functions A to Z control units 10 to 30. The set value is a level value corresponding to the volume scale for each function, or an expression for calculating the level value.
Further, the memory 43 stores the level value when the switch 41 is switched for each level adjusting unit.

In this device, basically, the level adjustment units 11 to 31 connected to the volume 40 input the value of the volume 40, adjust the level according to the set value set from the memory 43, and control the control target. ..

Then, when the value of the volume 40 is between MIN and MAX, the switch 41 is switched, the value of the volume 40 is moved up and down, and when the switch 41 is switched to the original connection destination again, the level before switching is reached. The value is read from the memory 43 and the level is adjusted.
Details of switching the switch 41 and adjusting the level by the volume 40 will be described later.

[Control flow in the level adjustment unit: Fig. 2, Fig. 3]
Next, the control flow in the level adjustment unit in this device will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic view showing a control flow in the level adjusting section of the present apparatus, and FIG. 3 is a schematic diagram showing a control flow in the level adjusting section of Patent Document 2.
In order to clarify the features of this device, the control flow in the prior art of FIG. 3 will be described first.

[Conventional control flow: Fig. 3]
FIG. 3A shows, for example, an initial state in which the switch 41 connects the volume 40 to the level adjusting unit 11, and the scale and level value of the volume 40 are in a 1: 1 state. It has become.

Then, for example, the scale of the volume 40 is in a state of "3" at the level of the value "3", and switches the switch 41 Gabo Liu arm 40 to the level adjusting unit 21. Then, the level adjusting unit 11 stores the scale “3” of the volume 40 and the level value “3” in the memory 43.
Then, it is assumed that the scale of the volume 40 is moved to be raised to "8", and in that state, the switch 41 is switched to be connected to the level adjustment unit 11 again.

Then, the level adjustment unit 11 reads the level value “3” before switching from the memory 43, and starts the level adjustment. In this case, the scale of the volume 40 has moved to "8", but since the read level value is "3", the operation point 102 is as shown in FIG. 3 (b).
The operating point is a point specified by the scale of the volume 40 at that time and the actual level.

As shown in FIG. 3B, when the level is lowered from the operation point 102 to MIN (0,0), the level is moved on the locus of a straight line connecting the operation point 102 to MIN (0,0), and the operation point is moved. When raising the level from 102 to MAX (10, 10), it moves on the locus of a straight line connecting the operation points 102 to the MAX points.

Then, the case where the scale of the volume 40 is raised from "8" to "9" is shown in FIG. 3 (c).
In other words, the operating point 102, becomes "9" graduations volume 40, but will be moved over the intact path when increasing the Volume 40 therefrom, when lowering the Volume 40, FIG. As shown in 3 (c), it moves on the trajectory of a straight line connecting the operation point 102 and MIN (0,0).
The dotted line indicates the trajectory (trajectory) in which the operation point has moved, and the solid line indicates the trajectory in which the operation point will move from now on.

Further, FIG. 3 (d) shows a state in which the scale of the volume 40 is lowered from "9" to "3".
In other words, the operating point 102, the scale is "3" and the volume 40, but will be moving on intact trajectory when lowering Volume 40 therefrom, when raising the Volume 40, As shown in FIG. 3D, it moves on the trajectory of a straight line connecting the operation point 102 and MAX (10, 10).

Then, the case where the scale of the volume 40 is raised from "3" to "8.5" is shown in FIG. 3 (e).
In other words, the operating point 102 becomes "8.5" graduations volume 40, but will be moved over the intact path when increasing the Volume 40 therefrom, when lowering the Volume 40 , As shown in FIG. 3 (e), it moves on the trajectory of a straight line connecting the operation point 102 and MIN (0,0).

In the control flow in the level adjustment unit of Patent Document 2 shown in FIG. 3, the locus (trajectory) is always the current operation point 102 and (scale of volume 40, level) = (0,0) or (10,10). It is on two straight lines connecting and.

Therefore, in order for the orbit to be on one ideal straight line having a volume 40 scale: level of 1: 1, the current operating point 102 is (volume 40 scale, level) = (0,0) or ( It was necessary to move to 10 and 10) once.
That is, the scale: level of the volume 40 was not quickly increased to 1: 1.

[Control flow of this device: Fig. 2]
The control flow in the level adjustment unit in this device will be described with reference to FIG.
First, as shown in FIG. 2 (a), when starting the device is the initial state, the scale and level of Volume 40 is 1: 1 state.

Then, as in FIG. 3 (b), when the switch 41 is switched once and then switched to the level adjustment unit of the original connection destination, the value of the level before the switch is read from the memory 43 and as shown in FIG. 2 (b). to, to set the operating point 102, the trajectory of the case to reduce the track when raising the volume 40 is calculated.

Here, as a feature of this embodiment, a midpoint matching area 101 is provided.
The midpoint match area 101, at a preset area, as shown in FIG. 2 (b), and the "0" to "3" in Volume 40 and lateral width, level "0" to " a first area formed 3 "as the vertical width, the" 7 "to" 10 "in volume 40 and lateral width, the level" 7 "to" 10 "as the vertical width There is a second area that is formed.
The size of the midpoint matching area 101 is arbitrary. Further, the midpoint matching area 101 is preferably set near the MIN side and the MAX side of the straight line in the initial state, but may be formed at one end of the straight line in the initial state.

The role of this middle point matching area 101, when the operating point 102 by raising and lowering the Volume 40 enters to the middle point matching area 101, the movement of the subsequent operating points 102, of Volume 40 scale: Level When the midpoint 103 of a straight line (straight line in the initial state) in which is 1: 1 is passed and the midpoint 103 is passed, the subsequent movement is controlled so as to be performed on the straight line in the initial state. It is a thing.
Here, the midpoint is the midpoint of the straight line connecting MIN (0,0) and MAX (10,10) in FIG. 2, and in FIG. 2, the point (5,5) is the midpoint.

Specifically, as shown in FIG. 2C, when the scale of the volume 40 is raised from "8" to "9", the operation point 102 is in the second area of the midpoint matching area 101. in the absence, in the case of lowering the operating point 102 Karabo Liu arm 40, moves the operating point 102 MIN a straight orbit that connects (0,0).

Then, go down the Volume 40, enters the first area of the middle point matching area 101, when raising the operating point 102 Karabo Liu arm 40 causes via the middle point 103 (pass). Simply, instead of being through the midpoint 103, after passing through the middle point 103, when further increasing the Volume 40 moves on a straight line connecting the midpoint 103 and MAX (10, 10) ..

Further, after passing through the midpoint 103, when lowering the Volume 40, as shown in FIG. 2 (d), moves on a straight line connecting the midpoint 103 and MIN (0,0).
That is, by passing the midpoint 103, it is possible to quickly and easily return to the straight line in the initial state where the scale: level of the volume 40 is 1: 1.

That is, the movement of the operation points in this embodiment is as follows.
If the level of the current operating point 102 does not fall within the range of the midpoint matching area 101, the trajectory always connects the operating point 102 with (volume scale, level) = (0,0) or (10,10). It will be on two straight lines.

When the level of the current operating point 102 falls within the range of the midpoint matching area 101, the trajectory is the same as the current operating point 102 (volume scale, level) = (0,0) or (10,10). Of these, a straight line connecting the points closer to the current operating point 102, a straight line connecting the current operating point 102 and the midpoint 103, and the midpoint 103 and (volume scale, level) = (0,0) or Of (10, 10), the orbit is on three straight lines connecting the points farther from the current operating point 102.

Then, the current operation point 102 enters the range of the midpoint matching area 101 and passes through the midpoint 103 of the control, so that the scale of the volume 40: the level becomes 1: 1 on a straight line (straight line in the initial state). The trajectory of the operating point 102 is quickly and easily returned.
Alternatively, when the current operating point 102 becomes (volume scale, level) = (0,0) or (10,10), the trajectory of the operating point 102 is returned to the straight line in the initial state.

[Suppression of sudden level fluctuations]
This device prevents unexpected sudden level fluctuations from occurring when the switch 41 is switched. Before explaining the control method in this apparatus, the control method in Patent Document 2 will be described.

[Control method of Patent Document 2: FIG. 4]
First, the control method in Patent Document 2 will be described with reference to FIG. FIG. 4 is an explanatory diagram showing a control method of Patent Document 2.
When the switch 41 switches the function controlled by the volume, the volume scale changes to an extremely large or small position, and conversely, when the level (set value) is extremely small or large, the volume scale changes. The level fluctuates greatly with respect to the amount, which may lead to a larger change than the user expected.

In Figure 4, when a large scale for the current operating point 102 Karabo Liu arm 40 is an example of a rapid increase in the level occurs, it is unacceptable for some users.

[Control method of this device: Fig. 5]
A characteristic control method of the present device will be described with reference to FIG. 4 with reference to FIG. FIG. 5 is an explanatory diagram showing a control method of the present device.
In this device, as shown in FIG. 5, a steep control prohibition area 104 for prohibiting steep control is provided.
The steep control prohibition area 104 is formed with the volume scales "8" to "10" as the width in the horizontal direction and the levels "0" to "2" as the width in the vertical direction.

The size of the steep control prohibition area 104 is arbitrary. Further, although the steep control prohibition area 104 is provided at the lower right of FIG. 5, it may be provided at the upper left or both.
Here, the lower right is an area which is a rapid change in the case of increasing the Volume 40, upper left is an area which is a steep change when decreasing the Volume 40.
The steep control prohibition area 104 and the midpoint matching area 101 of FIG. 2 may be provided in combination.

Specific operations in the steep control prohibition area 104, when the time variation of the functions of the Volume 40 by switching the switch 41, and the steep control prohibition area 104 contains the current operating point 102, (volume scale, Level) = (0,0) or (10,10), whichever is closer to the level of the current operating point 102, and only one straight line connecting the operating point 102 is used as the trajectory for control.

In the example of FIG. 5, the straight line connecting the current operation point 102 and MIN (0,0) is extended, and the straight line is set as the trajectory.
As a result, it is possible to suppress a sudden rise or fall in the level.
Then, when the vehicle goes out of the range of the steep control prohibition area 104, the control shown in FIG. 2 is performed.

[Example of application to camera system: Fig. 6]
Next, an example in which the volume control device is applied to the camera system will be described with reference to FIG. FIG. 6 is a configuration diagram showing an application example to a camera system.
As shown in FIG. 6, the camera system connects to a camera (imaging device) 53, a viewfinder 55 connected to the camera 53 to display an image, a camera 52, and connected to the camera 52 to display an image. It is composed of a display 54 and a remote controller (remote controller) 50 connected to the camera 52.

The remote controller 50 includes a control unit 56, a switch 41, and a memory 43. The control unit 56 includes a level adjustment unit 11, 21, 31 and a switching control unit 42.
Further, the remote controller 50 may include a display unit 51 that displays a set value or a state.
The control unit 56 is realized by a CPU (Central Processing Unit) or an FPGA (Field Programmable Gate Array).

In the camera system, the user who operates the remote controller 50 selects the image control process 1 or the image control process 2 which is a function to be controlled by the switch 41, and operates the volume 40 to perform the level adjustment units 11, 21, 31 and the like. The control method shown in FIGS. 2 and 5 is realized by using the control unit having the role of the switching control unit 42 and the memory 43, and the camera (imaging device) control device 52 determines the output level (set value). The image of the camera is adjusted as the input of the function (image control process 1) 12 and the function (image control process 2) 22.

Here, the graphs shown in FIGS. 2 and 5 can be displayed on the display unit 51 of the remote controller 50, the display 54, and the viewfinder 55. This allows the user to easily grasp the current operating status.
The position for displaying the graph on the display 54 or the viewfinder 55 is such that the graph is displayed so as not to cover the desired image such as a person, and is displayed only in the case of an arbitrary image system, for example, an image other than the main line. It has a limiting function.

[Example of application to a camera (imaging device): FIG. 7]
Next, an example in which the volume control device is applied to a camera (imaging device) will be described with reference to FIG. 7. FIG. 7 is a configuration diagram showing an application example to a camera (imaging device).
As shown in FIG. 7, the camera 53 is connected to a viewfinder 55 that displays a captured image.

The camera 53 includes a Volume 40, a switch 41, a memory 43, a control unit 56.
The control unit 56 includes a level adjustment unit 11, 21, 31 and a switching control unit 42, and as a function, switches and executes a plurality of image control processes to adjust the camera image, and performs the control methods of FIGS. 2 and 5. It is executed and realized by the CPU or FPGA.
The graphs of FIGS. 2 and 5 are displayed on the viewfinder 55 so that the user can easily grasp the current operating state.

[Effect of Embodiment]
According to the present embodiment, a plurality of functions are switched by the switch 41 and the level is controlled by the common volume 40 according to the functions. The switch 41 is once switched from the selected function and before the switching. When a function is selected, the level stored in the memory 43 is read, and the point specified by the scale of the level and the current volume is set as the current operation point 102, and the line or operation connecting the operation point 102 and the minimum point is set. The orbit of the operation point 102 is on the line connecting the points and the maximum points, and when the operation points 102 enter the midpoint matching area 101 by operating the volume 40, the line in the initial state connecting the minimum points and the maximum points The midpoint 103 is the trajectory through which the operation point 102 passes, and when the operation point 102 passes through the midpoint 103, the trajectory is returned to the initial state. Therefore, when the function is switched by the switch 41, the volume 40 and the level The amount of change in can be quickly returned to 1: 1 and has the effect of being able to operate without discomfort.

Further, according to the present embodiment, when the relationship between the scale of the volume 40 and the level is represented by a plane, a steep control prohibition area 104 for suppressing a sudden fluctuation of the level is provided, and the operation point 102 is a steep control prohibition area. When entering 104, the trajectory fluctuation from the operation point 102 is limited, and when the function controlled by the volume 40 is switched by the switch 41, unexpected operation due to a large level change is prevented and the user is stable. It has the effect of giving a feeling of operation.

The present invention is suitable for a volume control method, a volume control device, and an imaging device, which can quickly return the volume and level change amount to 1: 1 when the function is switched by a switch and can be operated without discomfort. is there.

10 ... Function A control unit, 11,21,31 ... Level adjustment unit, 12 ... Control target A, 20 ... Function B control unit, 22 ... Control target B, 30 ... Function Z control unit, 32 ... Control target Z, 40 ... Volume, 41 ... Changeover switch, 42 ... Changeover control unit, 43 ... Memory, 50 ... Remote control, 51 ... Remote control display unit, 52, 53 ... Camera (imaging device), 54 ... Display, 55 ... Viewfinder, 56 ... Control Department

Claims (5)

Switch plurality of functions in the switch, a control method for controlling the level of the feature in common volume,
When representing the scale and level of relationship volume plane, near the area of the minimum point of the scale and the level is minimized or set the near area of the maximum point as a maximum as the midpoint match area,
The level before switching of the function selected by the switch is stored in the memory, and once the switch is switched, when the switch selects the function before switching, the level stored in the memory is read. With the point specified by the level and the scale of the current volume as the current operating point, the operation is performed on the line connecting the operating point and the minimum point or the line connecting the operating point and the maximum point. As a point orbit
When the operating point enters the midpoint matching area by operating the volume, the midpoint of the line in the initial state connecting the minimum point and the maximum point is set as the trajectory through which the operating point passes, and the midpoint is defined as the midpoint. A volume control method, characterized in that when an operation point passes, a line in the initial state is set as the trajectory of the operation point. The horizontal axis represents the magnitude of the volume scale that increases from left to right, and the vertical axis represents the height of the level that increases from bottom to top. The volume control method according to claim 1, wherein a steep control prohibition area having a size of 3 is provided, and when an operation point enters the steep control prohibition area, trajectory fluctuation from the operation point is restricted. A switch to switch between multiple functions and
A common volume that controls the levels of the multiple functions,
Wherein the level before switching of the switch is stored for each function, when representing the scale and level of relationship volume plane, near the area of the minimum point of the scale and the level is minimized or becomes maximum A memory in which the area near the maximum point is set as the midpoint matching area, and
When the switch is once switched from the selected function and the function before switching is selected, the level stored in the memory is read, and the point specified by the scale of the level and the current volume is set as the current operation point. , The line connecting the operation point and the minimum point or the line connecting the operation point and the maximum point is set as the trajectory of the operation point, and the operation point becomes the midpoint matching area by operating the volume. Upon entering, the midpoint of the line in the initial state connecting the minimum point and the maximum point is set as the trajectory through which the operation point passes, and when the operation point passes through the midpoint, the operation is performed on the line in the initial state. A volume control device characterized by having a level adjusting unit that controls the trajectory of points. The horizontal axis represents the magnitude of the volume scale that increases from left to right, and the vertical axis represents the height of the level that increases from bottom to top. A steep control prohibition area of the size of
The volume control device according to claim 3, wherein the level adjusting unit limits the trajectory variation from the operating point when the operating point enters the steep control prohibition area. The volume control device according to claim 3 and
An imaging device characterized in that the relationship between the volume scale and the level is a flat surface, and a display unit for displaying the trajectory of an operation point is provided.

Images