JP2001160912A - Lens controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to easily grasp a shot position which is stored in a memory by providing a display unit for displaying the shot position in a lens controller provided with a shot function by which the desired shot position is stored in the memory and a prescribed control object, such as zooming, is shot-reproduced at the shot position by reading the shot position from the memory when the shot-reproduction is instructed. SOLUTION: A shot box 10, that applies shot reproduction for zooming of a lens device at a shot position stored in advance in the memory, is provided with display devices 30A-30F corresponding to a plurality of shot switches 26A-26F to instruct shot reproduction on an operation panel 24 and the display devices 30A-30F display the shot position, that is shot-reproduced by the shot switches 26A-26F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens control device, and more particularly to a lens control device having a shot function for reproducing a predetermined control target such as zoom, focus, iris or the like to a preset shot position in response to a shot reproduction instruction. About.

[0002]

2. Description of the Related Art A controller equipped with a shot function (preset function) called a shot box is known as a lens control device of a lens device used for a broadcast television camera (for example, Japanese Patent Application Laid-Open No. 8-33467).
No. 4). In the shot function, when a desired zoom position is set in advance as a shot position, the zoom is automatically reproduced at the shot position by turning on a switch. The shot function is used not only for controlling the zoom, but also for controlling other control targets of the lens device such as the focus and the iris.

In a conventional shot box, for example, a plurality of shot switches and a plurality of volumes (adjustment knobs) corresponding to each shot switch are provided, and a shot position is set by each volume and the shot switch is turned on. As a result, a zoom shot can be reproduced at a shot position set by the volume.

In recent years, semiconductor memory devices have become inexpensive, and when the shot position is set with a volume, there is a problem that the area occupied by the volume becomes large and that poor contact is likely to occur. A shot box that has a semiconductor storage element (hereinafter, referred to as a memory) instead of a volume and that can assign a desired shot position to each shot switch and register it in the memory has been commercialized. In such a shot box, when setting a shot position, first, the zoom of the lens device is operated by a normal controller other than the shot box, and the zoom is set to a position to be registered as a shot position. Then, a memo switch provided in the shot box is turned on, and a desired shot switch is turned on. As a result, the zoom position at that time is read from the lens device into the shot box, and is stored as a shot position in the memory address corresponding to the turned on shot switch. When reproducing the zoom at the shot position, a desired shot switch is turned on with the memo switch turned off. As a result, the shot position of the memory address corresponding to the turned on shot switch is read from the memory, and a control signal is transmitted from the shot box to the lens device so that the zoom moves to the shot position, and the zoom is reproduced at the shot position. Is done.

[0005]

However, in the case of a shot box in which the shot position is stored in the memory, the shot position cannot be visually grasped as in the case where the shot position is set with a volume. For this reason, the operator must remember the shot position that he / she has registered, and if he forgets it, he or she cannot know the shot position without actually playing back the shot. Was.

The present invention has been made in view of such circumstances, and in a lens control apparatus for controlling a shot reproduction by storing a desired shot position in a memory, the shot position stored in the memory is easily grasped. It is an object of the present invention to provide a lens control device capable of performing the following.

[0007]

According to the present invention, in order to achieve the above object, a desired shot position is stored in a memory, and when a shot reproduction instruction is given, the shot position is read out from the memory and the shot position is read. A lens control device having a shot function for reproducing a shot of a predetermined control target such as zoom, focus, iris, etc., further comprising a display means for displaying a shot position stored in the memory.

According to the present invention, the shot position stored in the memory is displayed on the display means, so that the operator can easily know the shot position to be shot when the shot is reproduced. In addition, by displaying the current position of the control target to be shot and reproduced together with the display of the shot position, it is possible to know the remaining movement amount until the control target reaches the shot position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a lens control device according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an external view of a television camera system using a shot box to which the present invention is applied.
As shown in FIG. 1, a servo-operated lens device 6 is mounted on the television camera 4 supported by the camera platform 2. Head 2
Extend two operation rods 2A and 2B, and a shot box 1 is provided near the grip of the operation rod 2A.
0 is attached by the fixing knob 12.

The shot box 10 is integrally provided with a focus demand 14 for manually operating a focus. The focus demand 14 is used to control a focus lens group in the lens device 6 in accordance with the amount of rotation of a focus knob 14A. A position control signal (focus control signal) for instructing the movement position is transmitted to the lens device 6 via the shot box 10. The focus lens group in the lens device 6 is driven based on the focus control signal.

On the other hand, a zoom demand 16 for operating a zoom speed is mounted near the grip of the operating rod 2B. The zoom demand 16 is on the wide-angle side or the telephoto side depending on the rotation direction and the amount of rotation of the zoom ring 16A. Speed control signal (zoom control signal) for zoom operation to the side
Is output to the lens device 6 via the shot box 10. The zoom lens group in the lens device 6 is driven by speed control based on the speed control signal.

FIG. 2 is an external view of the shot box 10. As described above, the focus demand 14 is integrally provided in the shot box 10, and a focus control signal based on the operation of the focus demand 14 is transmitted via a cable from the lens connector 20 on the lower surface of the shot box 10. Is transmitted to the lens device 6. A zoom demand connector 22 to which the zoom demand 16 is connected is provided on the upper surface of the shot box 10, and a zoom control signal output from the zoom demand 16 is transmitted from the zoom demand connector 22 via a cable. Input to the box 10 and the lens connector 2 on the lower surface of the shot box 10
0 is transmitted to the lens device 6.

The operation panel 24 on the front of the shot box 10 has shot switches 26A to 26
6F, a memo switch 28, indicators 30A to 30F, and a speed adjustment knob 34 are provided. In addition, each switch is provided with an LED for displaying an ON / OFF state.

The shot switches 26A to 26F are for instructing registration (storage) and reproduction of a shot position relating to zooming, and these six shot switches 26A to 26F are used.
By using 6F, a maximum of six shot positions can be registered and reproduced.
It should be noted that there is a type in which shot positions are registered not only for zoom but also for focus and the like so that reproduction can be performed. However, in the present embodiment, only shot positions for zoom are registered.
It can be reproduced.

The memo switch 28 switches between a registration mode and a reproduction mode. Each time the memo switch 28 is pressed, these modes are switched. Memo switch 2
The LED 8 is lit (or blinking) in the registration mode. In this registration mode, when any of the shot switches 26A to 26F is pressed, the lens device corresponding to the shot switch is pressed. The zoom position at 6 is registered as a shot position.

On the other hand, when the LED of the memo switch 28 is turned off, the reproduction mode is set. In this reproduction mode, when any one of the shot switches 26A to 26F whose shot positions are registered is pressed, the shot switch is switched to that shot switch. The zoom is reproduced at the shot position registered correspondingly.

After the shot is reproduced, the zoom demand 16
Is operated, the shot is released, and the zoom of the lens device 6 is moved from the shot position based on the operation of the zoom demand 16. However, a switch for releasing the shot may be provided, and the operation of the zoom demand 16 may be invalidated until the switch releases the shot.

The displays 30A to 30F are provided corresponding to the respective shot switches 26A to 26F, and display the shot positions registered in the respective shot switches 26A to 26F. When turned on, the current position of the zoom is also displayed. The details of the displays 30A to 30F will be described later.

The speed adjustment knob 34 is for setting the zoom playback speed at the time of shot playback.

FIG. 3 is a configuration diagram showing the configuration of the lens device 6 and the shot box 10. As shown in the figure, the lens device 6 and the shot box 10 are connected by a cable between the communication interface 50 and the communication interface 52, and various signals can be exchanged between the communication interface 50 and the communication interface 52 by serial communication. Done. Also,
The focus demand 14 and the zoom demand 16 are connected to the shot box 10 and
The focus control signal and the zoom control signal output from the zoom demand 16 are transmitted to the lens device 6 via the shot box 10.

The zoom lens group 54, the focus lens group 56, and the iris 58 of the lens device 6 are driven by motors 60, 62, and 64, respectively, and these motors 60 to 64 are transmitted from a CPU 66 via a D / A converter 68. Amplifier 70, based on the drive signal given by
72 and 74. The zoom lens group 5
The control 4 is speed control, and the focus lens group 56 and the iris 58 are position controls.

The CPU 66 transmits the above-mentioned drive signals for driving the zoom lens group 54 and the focus lens group 56 to each of the amplifiers 70 based on the zoom control signal and the focus control signal given from the shot box 10 via the communication interface 50. , 72. The zoom control signal and the focus control signal are mainly control signals output from the zoom demand 16 and the focus demand 14 that are given via the shot box 10. When the shot box 10 executes a shot reproduction process, Is the CPU 90 of the shot box 10
Is provided. The details of the shot processing will be described later.

Regarding the control of the iris 58, the CPU 6
6 outputs the drive signal for driving the iris 58 to the amplifier 74 based on the iris control signal provided from the television camera 4 via the A / D converter 76.

The CPU 66 includes a zoom lens group 5
4. The positions of the focus lens group 56 and the iris 58 are detected by the position detectors 78, 80 and 82, respectively, and these detected positions are shot via the communication interface 50 in response to a request from the shot box 10. Send to Box 10.

The CPU 90 of the shot box 10 controls the shot switches 26A to 26A of the operation panel 24 shown in FIG.
26F, the on / off operation of the memo switch 28 is detected, and the set position of the speed adjustment knob 34 is detected via the A / D converter 92. Then, based on these detections, processing such as shot position registration (shot registration) and shot reproduction is executed. Shot switches 26A-2
6F is OFF (when neither the shot registration nor the shot reproduction processing is executed), C
The PU 90 converts the zoom control signal and the focus control signal given from the zoom demand 16 and the focus demand 14 via the A / D converter 92 into digital signals,
CP of the lens device 6 via the communication interface 52
Send to U66. However, the CPU 90 does not transmit the zoom control signal given from the zoom demand 16 to the lens device 6 when executing the processing of the shot reproduction, and generates the zoom control signal for the control of the shot reproduction by itself. Transmit to the device 6.

The CPU 90 turns on and off an LED 94 provided on each switch (LED 94 indicates a plurality of LEDs provided on each switch).
Control is performed according to the OFF state. Further, the CPU 90 displays the display 30 based on the shot positions registered in the shot switches 26A to 26F (the display 30 includes a plurality of displays 30 for each of the shot switches 26A to 26F shown in FIG. 2).
A to 30F) are turned on and off, and the LEDs of the display 30 are turned on and off based on the current zoom position acquired from the lens device 6 during shot reproduction.
Controls turning off. The control of the display 30 will be described later.

Next, the CPU of the shot box 10 will be described.
The processing related to the 90 shots will be described with reference to the flowchart in FIG. When the power is turned on, the CPU 90 performs initial settings (step S10), and then first sets each of the shot switches 26A to 26F and the memo switch 2 provided on the operation panel 24 of the shot box 10.
8 is read (step S12). Each switch is turned on while being pressed, and turned off when released. Then, first, it is determined whether or not the memo switch 28 is turned on (step S14). Here, if it is determined as YES, it is next determined whether or not the write flag is turned on (step S16). That is, it is determined whether or not the mode is a registration mode for registering a shot position. If the determination is YES, the write flag is turned off (step S18).
That is, a reproduction mode in which shot reproduction is possible is set, and the LED of the memo switch 28 is turned off. On the other hand, step S
If NO is determined in step 16, the write flag is turned on (step S20). That is, the registration mode is set, and the LED of the memo switch 28 is turned on (or blinks).

Subsequently, the CPU 90 sets the memo switch 28
Is turned off (that is, 22), and if YES, the process returns to step S12.

If the determination in step S14 is NO, it is determined whether any of the shot switches 26A to 26F (shot numbers n (1 to 6)) has been turned on (step S24). If the determination is YES, it is next determined whether the write flag is on (step S26). That is, it is determined whether or not the mode is the registration mode. Y
When it is determined as ES, the current zoom position is acquired from the lens device 6, and the zoom position is used as the zoom control value as the shot number n (1 to
It is stored at the address of shot n in the memory corresponding to 6) (step S28). Note that the memory is not shown in FIG.
90 built-in or connected memory (RAM, EEPROM
M etc.).

In the step S26, NO, that is,
When it is determined that the write flag is off and the mode is the reproduction mode, first, the zoom control value of the shot n stored corresponding to the turned on shot switch (shot number n) is read from the memory (step S30). And
The CPU 90 transmits a zoom control signal for reproducing the zoom to the read zoom control value to the lens device 6, and executes the shot reproduction (step S32). Where C
The PU 90 reads the set position of the speed adjustment knob 34, generates a zoom control signal so as to reproduce the zoom at a reproduction speed corresponding to the set position, and transmits the zoom control signal to the lens device 6. Further, the CPU 90 reads the current zoom position from the lens device 6 and displays the current zoom position on the display 30 (displays 30A to 30F) corresponding to the turned on shot switch.
Display corresponding to the shot switch turned on)
To be displayed. A description of the display on the display 30 along with the processing in steps S32 and S34 will be described later.

When the processing in step S32 is completed, or when the determination in step S24 is NO, the CPU 90 shifts to step S34, where the shots stored in the memories corresponding to the shot switches 26A to 26F are stored. The position is displayed by controlling each of the indicators 30A to 30F. That is, the CPU 90 reads out zoom control values (values indicating shot positions) of all shots stored in the memory (step S34). Then, in accordance with the read zoom control value of each shot, the corresponding display 30A to 30F is controlled to turn on and off the LED (step S36). By repeating the processing from step S12 to step S36, the CPU 90 executes processing such as shot registration, shot reproduction, and display on the display 30 based on a switch operation.

Next, the indicators 30A to 30F provided on the operation panel 24 of the shot box 10 will be described. As shown in FIG. 2, the shot boxes 10 are provided with indicators 30A to 30F corresponding to the respective shot switches 26A to 26F. Each display 30A ~
30F is similarly configured by a plurality of LEDs, and FIG. 5 is an enlarged view of shot switches 26A and 26B of shot numbers 1 and 2 and indicators 30A and 30B, as shown in FIG. Each of the displays 30A to 30F is configured by a plurality of LEDs 100A to 100H arranged in one horizontal row. In addition, LEDs arranged in a horizontal row
On both sides of 100A to 100H, a letter "T" indicating a telephoto end and a letter "W" indicating a wide end are written.
Each LED at each point of the zoom position from the telephoto end to the wide end
100A to 100H are associated with each other. Each LED1
For example, 00A to 100H are turned on or off in red, and only predetermined LEDs of the indicators 30A to 30F are turned on to display the shot position and the current position of the zoom. Can be recognized.

The display of the shot position by each of the displays 30A to 30F is performed by the CP of the shot box 10 as described above.
By U90, step S34 and step S34 in FIG.
The CPU 90 reads out the shot position (zoom control value) stored in the memory corresponding to each of the shot switches 26A to 26F (step S3).
4) By turning on only the LED corresponding to the shot position among the LEDs 100A to 100H (step S3)
6) The shot positions stored corresponding to the shot switches 26A to 26F are displayed on the displays 30A to 30F. For example, the display 30A of shot number 1 in FIG.
In the example, the LED 100F is turned on (LEDs other than the LED 100F are turned off), the LED 100G is turned on on the display 30B of the shot number 2, and the shot positions registered for the shot switches 26A and 26B are determined by these lighting positions. It is displayed so that it can be recognized. Each display 3
Since the display of the shot position by 0A to 30F is always performed for the shot switch in which the shot position is registered regardless of whether or not the shot is being reproduced, the operator needs to turn on the shot switch before reproducing the shot. After confirming the shot position registered in each of the shot switches 26A to 26F, it is possible to select the shot reproduction to a desired shot position.

On the other hand, the display of the current zoom position by each of the displays 30A to 30F is performed in the reproduction mode.
Only when any one of the shot switches is turned on to execute the shot reproduction, the operation is performed on the display corresponding to the turned on shot switch. The current position of this zoom is displayed in the shot box 10 as described above.
The CPU 90 obtains the current zoom position from the lens device 6 and displays the current position of the zoom on the display of the shot switch that has been turned on by the CPU 90 of FIG. By turning on the corresponding LED, the current zoom position is displayed on the display. When displaying the current zoom position, the above-described shot position is also displayed at the same time. For example, the shot switch 26B of shot number 2 in FIG. 5 is turned on in the playback mode,
This shows a state in which the LED provided in the shot switch 26B is lit. In the display 30B, in addition to the lit LED 100G indicating the shot position, the LED 100B is lit to display the current zoom position. Since the zoom moves so as to approach the shot position in the shot reproduction, the lighting position indicating the current zoom position on the display 30B gradually approaches the lighting position of the shot position, and eventually overlaps the shot position.

As described above, since the shot position of the shot switch registered as the shot is displayed on the display corresponding to the shot switch, the operator can easily know the registered shot position. In addition, at the time of the shot reproduction, the current position of the zoom is displayed at the same time as the shot position, so that the remaining movement amount until the zoom reaches the shot position can be easily known.
Although the current zoom position is displayed only when the shot is being reproduced, it may be displayed at all times together with the display of the shot position. When it is not necessary to display the shot position or the like on the displays 30A to 30F when the shot function is not used, the display of the displays 30A to 30F may be turned off by a predetermined switch to save power.

Next, a case where the present invention is applied to another type of shot box will be described. In the above-described embodiment, the case where the present invention is applied to a shot box for registering a shot position with respect to zoom and reproducing a shot is described. A shot box for registering a position and playing back a shot is also known, and in such a shot box, the shot position (and the current position) can be displayed by a display configured similarly to the above embodiment. . Also,
It is also known that a plurality of control targets, for example, a zoom and a focus shot position are registered for one shot switch, and when the shot switch is turned on, the zoom and the focus are simultaneously reproduced at the respective shot positions. In this case, a display configured in the same manner as in the above embodiment may be provided for each control target, or one display may be displayed in a different color for each control target. It may be. In other embodiments described below,
A description will be given of a case where the shot position of each control target is displayed in a different color on the display, and as an example of a shot box to which the display is applied, one shot switch is used to set the zoom, focus, and iris shot positions. Here, a shot box is shown, in which only the control target selected by the enable switch can be shot-reproduced upon registration and shot reproduction.

FIG. 6 is a diagram showing a configuration of the operation panel 24 of the shot box 10 according to another embodiment. The same or similar members as those of the shot box 10 shown in FIG. 2 are denoted by the same reference numerals as those in FIG. Enable switches 150A and 150 shown in FIG.
B and 150C are provided for selecting a control target to be shot-reproduced when any one of the shot switches 26A to 26F is turned on in the reproduction mode, and has three enables corresponding to zoom, focus, and iris. Switches 150A, 150B, and 150C are provided.

As in the above embodiment, the memo switch 2
8 to the registration mode by turning on the shot switch 26
When any one of A to 26F is turned on, the zoom position, focus position, and iris position at that time are set to the lens device 6.
Are read into the shot box 10 and their positions are stored in the memory as shot positions corresponding to the turned on shot switches. In addition, at the time of shot registration, not only the ON / OFF of the enable switches 150A, 150B, 150C, but also the shot position is registered for all of zoom, focus, and iris.

On the other hand, when the memo switch 28 is turned off to set the reproduction mode, and one of the shot switches 26A to 26F whose shot positions are registered is turned on, the enable switch 150 out of the zoom, focus and iris is set.
Only the control targets for which A, 150B, and 150C are on are shot-reproduced at the registered shot positions. For example, the enable switch 150 for zooming
If only A is turned on, the shot switches 26A-
When any of 26F is turned on, the shot is reproduced at the shot position where only the zoom is registered. Therefore, before the shot is reproduced, the enable switch 1 of the desired control target is
By turning on 50A, 150B, 150C,
Only the control target can be shot-reproduced.

In the shot box 10, the indicators 30A to 30F provided corresponding to the respective shot switches 26A to 26F display the shot positions in the same manner as in the above-described embodiment. Displays the current position of the target. However, in the present embodiment, it is assumed that only the shot position and the current position related to zoom and focus are displayed, and the shot position and the current position related to the iris are not displayed.

FIG. 7 is an enlarged view of the shot switches 26A and 26B of the shot numbers 1 and 2 of the shot box 10 and the displays 30A and 30B. As shown in the figure, each of the indicators 30A to 30F includes a plurality of LEDs 100A to
100H, but L arranged in a horizontal line
In addition to the characters “T” and “W” on both sides of the CDs 100A to 100H, a character “∞” indicating the infinity end of the focus and a character “N” indicating the closest end are described. I have. Each LED is of a type that emits multicolor light, and can emit, for example, red and yellow light.

After the shot is registered, the displays of the shot positions are displayed on the displays 30A to 30F with respect to only the control target turned on by the enable switches 150A and 150B. For example, when both the zoom and focus enable switches 150A and 150B are turned on, both the zoom and focus shot positions are displayed on each display 30A.
To 30F, and each display 30A to 3F
At 0F, the LEDs corresponding to both the zoom and focus shot positions are turned on. At this time, the LED emits light in different colors at the zoom shot position and the focus shot position. For example, the LED emits red light at the zoom shot position and emits yellow light at the focus shot position. In the display 30A of the shot number 1 in FIG. 7, the LED 100F emits red light with respect to the zoom shot position, and the yellow LED 100C emits light with respect to the focus shot position. In the display 30B of the shot number 2, the LED 100G emits red light regarding the zoom shot position, and the LED 100D regarding the focus shot position.
Is emitting yellow light. Here, assuming that the zoom enable switch 150A is turned off, each display 30A
The display of the zoom shot position in the range from 30F to 30F is not performed, and only the LED corresponding to the focus shot position is turned on. Similarly, when the focus enable switch 150B is turned off, each of the display devices 30A to 30A is turned off.
The display of the focus shot position at 30F is not performed. However, the enable switches 150A, 150B
Regardless of ON or OFF, the zoom and focus shot positions may always be displayed on the displays 30A to 30F.

In the reproduction mode, the shot switch 2
When any of 6A to 26F is turned on, the display 30
A to 30F have enable switches 150A and 150B
The current position of only the control target that is turned on is displayed. For example, when any of the shot switches 26A to 26F is turned on while both the zoom and focus enable switches 150A and 150B are turned on, the display corresponding to the turned on shot switch is displayed as a zoom. Is displayed together with the shot position. Similar to the display of the shot position, the current zoom position is displayed in red, and the current focus position is displayed in yellow. For example, shot number 2 in FIG. 7 indicates a state in which both the zoom and focus enable switches 150A and 150B are turned on and the shot switch 26B is turned on in the playback mode. LED 100B corresponding to the current zoom position, in addition to lighting of LEDs 100G and 100D indicating the zoom and focus shot positions
Is lit red, the LED 100F corresponding to the current focus position is lit yellow, and the current zoom and focus positions are displayed. Since the zoom and the focus move so as to approach the respective shot positions in the shot reproduction, the lighting positions indicating the current zoom and focus positions on the display 30B gradually approach the lighting positions of the respective shot positions. Overlaps the shot position. When a shot is reproduced with one of the zoom and focus enable switches 150A and 150B turned off, only the current position of the control target whose enable switch is turned on is displayed on the display as in the case of displaying the shot position. .

As described above, in the embodiment described with reference to FIGS. 1 to 7, the displays 30A to 30
Regarding the display of F, only the LED corresponding to the shot position and the current position of the zoom are turned on at the time of the shot reproduction. However, the present invention is not limited to this, and the LED corresponding to the shot position and the current position of the zoom may be turned on. All the LEDs between the LEDs may be turned on, and the shot position and the current position may be displayed in any manner.

In the above embodiment, the zoom positions (focus positions) from the wide end to the tele end (infinity end to the closest end) are also provided in each of the displays 30A to 30F.
Are arranged in a horizontal row, but a plurality of LEDs may be arranged in an arc as shown in FIG.
They may be arranged vertically.

Further, each of the indicators 30A to 30A of the above-described embodiment is used.
In the 30F, LEDs 100A to 100H of the same shape are arranged in a horizontal line, but as shown in FIG. 9, LEDs having different widths reminiscent of the angle of view from the telephoto end to the wide end.
Thus, the position where the LED is lit may correspond to a position between the telephoto end and the wide end, which may be displayed in an easily understandable manner.

Also, the display units 30A to 30A of the above-described embodiment are used.
In the 0F, the shot position and the current position are displayed by the lighting positions of a plurality of arranged LEDs, but these are displayed by a display capable of displaying numerical values (a plurality of LEDs or LCDs arranged for displaying numbers). May be displayed numerically. For example, as shown in FIG. 10, an LCD is provided for each of the shot switches 26A to 26F, and the entire range from the telephoto end to the wide end of the zoom is 0 to 10
The shot position of the zoom is displayed on the right side of the LCD, and the current position of the zoom is displayed on the right side of the LCD as 0.
It may be indicated by a numerical value within the range of 100. The same applies to the case where the shot position or the current position is displayed for another control target such as focus.

In the above embodiment, each display 30
A to 30F are configured by arranging mere light emitting means such as LEDs, but not limited to this, a character display such as an LCD is arranged corresponding to each of the shot switches 26A to 26F, and each character display is In addition to displaying the above-described numerical values to display the shot position and the like, the shot position and the like may be displayed by using a display such as a graphic. Also, each of the shot switches 26A to 26A
Instead of providing an LCD for each F, a shot position (and a current position) for each of the shot switches 26A to 26F may be displayed on one LCD screen.

In the above embodiment, the display devices 30A to 30F are provided for each of the shot switches 26A to 26F so that the shot positions stored corresponding to the shot switches 26A to 26F can be displayed simultaneously.
In order to save space, only one display is provided and a changeover switch is provided, and the shot positions stored in correspondence with each of the shot switches 26A to 26F are switched and displayed by the changeover switch. Is also good. Furthermore, in this case, one shot switch is used,
In addition, the memory can store not only the number of shot switches but also a large number of shot positions. When the shot switches are turned on in the playback mode, the control target is shot at the shot positions displayed on the display at that time. By doing so, one shot switch may be used to reproduce shots at many shot positions.

In a shot box such as the shot box shown in FIG. 6, in which shot registration and shot reproduction can be performed for a plurality of control objects, a control for displaying a shot position and a current position on each of the displays 30A to 30F is provided. The target may be freely switched by a predetermined display changeover switch. For example, when a display of a shot position related to zoom is first displayed on the display unit, every time the display changeover switch is pressed once, focus → iris → both zoom and focus → both zoom and iris → focus and iris The control target for displaying the shot position and the like on the display may be switched in order, such as from both to zoom. Only one display changeover switch may be provided to switch the display in common for all of the displays 30A to 30F, or each of the displays 30A to 30F
A display changeover switch is provided for each of the display units 30A to 30F.
The display may be switched separately for each 30F.

[0052]

As described above, according to the lens control apparatus of the present invention, the shot position stored in the memory is displayed on the display means. The shot position to be performed can be easily known. In addition, by displaying the current position of the control target to be shot and reproduced together with the display of the shot position, it is possible to know the remaining movement amount until the control target reaches the shot position.

[Brief description of the drawings]

FIG. 1 is an external view of a television camera system using a shot box to which the present invention is applied.

FIG. 2 is an external view of a shot box.

FIG. 3 is a configuration diagram showing a configuration of a lens device and a shot box.

FIG. 4 is a flowchart illustrating a processing procedure of a shot box CPU;

FIG. 5 is a partially enlarged view of an operation panel of the shot box.

FIG. 6 is an external view of a shot box according to another embodiment.

FIG. 7 is a diagram showing a partially enlarged operation panel of a shot box according to another embodiment.

FIG. 8 is a diagram showing another embodiment of the display.

FIG. 9 is a diagram showing another embodiment of the display.

FIG. 10 is a diagram showing another embodiment of the display.

[Explanation of symbols]

6 Lens device, 10 Shot box, 14 Focus demand, 16 Zoom demand, 24 Operation panel, 26A to 26F Shot switch, 28 Memo switch, 30A to 30F Display, 34 Speed adjustment knob, 66, 90 ... CPU, 100A-100H ...
LED

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/238 H04N 5/238 Z

Claims (3)

[Claims] A memory for storing a desired shot position in a memory;
When a shot playback instruction is given, a lens control device having a shot function for reading a shot position from the memory and playing back a predetermined control target such as zoom, focus, or iris at the shot position is stored in the memory. A lens control device comprising a display means for displaying a shot position obtained. 2. A plurality of shot positions corresponding to a plurality of shot switches for instructing shot reproduction can be stored in the memory, and the display means is provided in parallel with each of the shot switches. 2. The lens control device according to claim 1, wherein a plurality of displays display a plurality of shot positions stored in the memory. 3. The lens control device according to claim 1, wherein the display unit displays the shot position and also displays a current position of the control target to reproduce the shot.