JP3496944B2 - TV camera remote control - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device for a television camera in which various functions such as pan and tilt of the television camera are operated by remote control. is there. 2. Description of the Related Art Conventionally, in order to obtain weather information, images from above, etc., a television camera supported by a camera platform is installed at various places such as outdoors and on a ceiling, and a photographing position by the television camera is set. For example, pan driving means disposed on the camera platform, pan by tilt driving means, tilt operation, and zoom, focus operation and the like of the TV camera are provided so as to be remotely controllable,
2. Description of the Related Art There is known a remote control device of a television camera which is operated from a remote position by an operator. [0003] In addition, regarding remote control of the television camera, operating states of functions such as pan, tilt, zoom, and focus at a specific shooting position (shot) are set and stored in advance, and the current shooting position is set. For example, a technology that controls the movement of each function to end simultaneously when automatically changing to the memory shooting position
It is known, as can be seen in 58-6163. In the prior art, when changing from an arbitrary photographing position to a preset memorized photographing position, an operator sets a moving time in order to simultaneously start and stop the movement of each function, Control is performed by outputting a driving signal to each driving means at a moving speed calculated in accordance with the instructed moving time. At that time, the movement is not always completed in the instructed time, and for a function with a large movement amount, for example, pan or tilt, the movement may not be completed within the instructed time even at the maximum movement speed. In the above-mentioned prior example, the instruction time is automatically increased and updated and corrected so that the movement of each function is completed at the same time. However, when the above-described shooting position is automatically moved to a preset target position, the angle of view at the start position is not fixed, and When the moving speed of the upper subject differs according to the angle of view and the moving time needs to be changed or the zoom operation is performed simultaneously during the moving, the moving speed of the image according to the zoom is changed. Even if pan and tilt are moving at the same speed, if the zoom is telephoto and the angle of view is small, the subject moves faster on the shooting screen and slower on the wide-angle screen with a large angle of view. In other words, it seems that the pan and tilt speeds change according to the change in zoom, and there is a problem that the moving image becomes unnatural. [0006] More specifically, regarding the movement of the photographing position, first, there is a case where only the video at the photographing position where the movement is completed is required to complete the movement in as short a time as possible.
In some cases, it may be necessary to move the moving image at an appropriate speed as necessary, and in the former case, the moving speed of the moving image may be ignored by instructing that the moving time is minimized, In the latter case, it is suitable for moving images
Adjust the travel time to obtain the appropriate travel speed and give an instruction
In some cases, the instruction of the moving time for obtaining the appropriate moving speed differs depending on the angle of view, and in order to control the speed suitable for moving the shot image, the same movement must be rehearsed several times and determined. Is complicated. In particular, the speed of movement to the target position is
Intended to be set by the travel time until the end of the move
In addition to setting the time so that an appropriate moving speed can be obtained according to the magnitude of the moving amount from the movement start position, in addition to setting the moving time according to the angle of view as described above, However, the operation becomes complicated. [0008] The present invention has been made in view of the above circumstances, to allow a good move with a simple instruction operation for instructing to complete simultaneously started at the same time the movement of each function in the movement to the target position of the imaging position It is an object of the present invention to provide a remote control device for a television camera. In order to achieve the above object, a remote control device for a television camera according to the present invention has a basic configuration shown in FIG. The pan head 4 is installed on the platform 4 so as to be capable of panning and tilting. The pan head 4 is provided with a pan driving unit 6 for performing panning by turning motion of the television camera 1 and a tilt driving unit 7 for performing tilting by tilting up and down, Moreover, double the zoom lens 3 to a zoom drive means 8 for zooming, focus driving means 9 for focusing is installed
A number (four) of functions to be controlled are provided, and a control signal is output from the drive control means 11 to the drive means 6 to 9 of these functions, and the respective stop positions and drive speeds are controlled. . On the other hand, a shot storage means 12 for storing position information of each function at a specific photographing position in advance is provided, and a moving speed to a target position stored in the shot storage means 12 is operated by an operator. ,
Speed setting means is set indicated by the rate or time
13, and during the movement from the movement start position to the destination position
Angle of view input means 14 for reading the current angle of view including
From the movement start position to the target position based on the signals of the shot storage means 12, the speed setting means 13 and the angle of view input means 14,
When moving, even if the angle of view fluctuates, the fluctuation speed of the video is substantially the same, and the driving speed of each of the driving means 6 to 9 is simultaneously ended when the movement of each function of each of the driving means 6 to 9 ends.
Based on the travel time of the function with the maximum travel
The control amount by the drive control means 11 is set. That is, the set value by the speed setting means 13 and the signal of the angle of view by the angle-of-view input means 14 are input to the speed correction means 15, and the angle-of-view input means 14
In the small angle of view, the moving speed depends on the current angle of view obtained from
The moving speed is slow movement speed in the (travel time is increased) large size screen angle
Is corrected to be faster . This speed correction means 15
A corrected speed signal, the shot stored the position information of the unit 12 to the stored target position is inputted to the speed calculating means 16, the movement time taken from the speed computing means 16 the movement start position in the movement of the target position Move the function by the maximum amount of movement so that the movement of each function ends at the same time
The moving speed of each function is calculated and set based on the time . Then, the speed signal by the speed calculating means 16 and the target position information by the shot storage section 12 is outputted to the drive control means 11, the drive control unit 11 moves
The pan, tilt, zoom, and focus drives are performed at a predetermined speed according to the angle of view from the start position to the target position, and at the same time, the operation of each of the driving units 6 to 9 is started to move at a predetermined speed. The drive signal is output so as to stop at the same position. [0012] The above function is 4
Not limited to the type, for example, a height function for moving the TV camera up and down is also conceivable, and the number of functions to be controlled is increased or decreased as needed. In the remote control device for a television camera as described above, a television having a plurality of functions to be controlled is provided.
The bi- camera can remotely control the change of the photographing position by operating the driving means of each function. In order to obtain an image at a predetermined photographing position, the position information of each function at the photographing position is registered in the shot storing means in advance. deep. Then, when moving from the movement start position to the target position stored in the above shot storage means, slow moving speed in the small angle according to the current angle obtained by angle input means, in a large size screen angle Make a correction so that the moving speed is faster,
While moving the image at this speed, when the above functions reach the target position, complete the movement at the same time,
Function of maximum movement amount from movement start position to destination position
The respective moving speeds of the respective functions are calculated based on the moving time of the function, and a signal based on the calculated respective moving speeds is output to the respective driving means. The movement to the target position is controlled so that Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows the overall configuration of a remote control device for a television camera according to this embodiment. The control target in this embodiment is
4 functions: tilt, tilt, zoom and focus
Case. The television camera 1 comprises a camera body 2 and a zoom lens 3, and the camera body 2 is supported by a pan head 4 capable of panning in a turning direction and tilting in a vertical tilting direction. The camera platform 4 is mounted on a fixed portion by a tripod 5 or the like. The pan and tilt operations of the camera platform 4 are provided so as to be driven by servo motors 42 and 43 (FIG. 3) described later. Similarly, zoom and focus operations of the zoom lens 3 of the television camera 1 are provided so as to be driven by servo motors 44 and 45 (FIG. 3) described later. Then, those pan, tilt, zoom,
The focus operation is configured so that remote control can be performed based on an operation of the controller 10 by an operator.
The camera platform 4 of the television camera 1 and the controller 10 are connected by communication means such as a cable 21 (analog signal), and a telephone line or the like may be used as this communication means. To explain the operation members of the controller 10, a focus knob 22, a zoom switch 23, and a joystick 24 are provided for performing a normal zoom, focus, pan, and tilt operation of the television camera 1. The focus knob 22 is a rotary operation member.
This is for adjusting the focus far. The zoom switch 23 is of a seesaw type. The swing switch is used to operate a potentiometer 35 (FIG. 3) to perform wide-angle / telephoto zoom adjustment. The joystick 24 is a rod-shaped operating member that can be tilted left and right and up and down. The left and right tilts operate a pan potentiometer 36 (FIG. 3) to perform left and right pan adjustments. The upper and lower tilts are adjusted by operating the potentiometer 37 (FIG. 3). The zoom switch 23
And each potentiometer 35 to 37 of the joystick 24
Is provided in a structure that returns to the neutral position when the operation of the operation member is released. On the upper part of the controller 10, a number of shot switches 25 and a memo switch 26 for writing are arranged. The shot switch 25 and the memo switch 26 are provided in an on / off push button type. When the shot switch 25 is turned on when the memo switch 26 is pressed once and is in the write mode,
The position information of the pan, tilt, zoom, and focus at that time, that is, the data of the photographing position, is recorded at a predetermined address, and when turned on when not in the write mode, the position information recorded at the predetermined address is recorded. And functions as the above-described shot storage unit 12. Further, a speed adjustment knob 27 and a mode changeover switch 28 are provided. The speed adjustment knob 27 is constituted by a rotary encoder, and instructs an adjustment of a speed of moving from a current position to a target photographing position. The center position is set to a standard speed when a moving image is required. Note that this standard value is provided so that the setting can be changed by a separate adjustment mechanism. The value indicated by the speed adjustment knob 27 is taken in when the shot switch 25 is turned on in a mode other than the writing mode when the mode changeover switch 28 is operated to the auto side (auto speed mode). The mode changeover switch 28 is for switching the speed mode between the auto speed mode and the high speed mode. When the mode switch is operated to the high speed mode, an intermediate image is displayed. The set value of the highest moving speed set for when it is not necessary is taken in when the shot switch 25 is turned on in a state other than the write mode. Also, the setting value of the maximum moving speed is set by a separate adjusting mechanism as necessary, for example, if the maximum moving speed is set to the maximum limit speed in a studio, the driving noise increases. It is provided so as to be changeable. Next, FIG. 3 shows a schematic configuration of the controller. The controller 10 has a built-in CPU 30 for performing arithmetic processing, a RAM 31 (battery backup), a ROM
32 is connected by a data bus 33, and signals (voltages) of the potentiometers 35 to 37 operated by the zoom switch 23 and the joystick 24 are input via an A / D converter 34. Similarly, an I / O port A signal of a rotary encoder 39 operated by a focus knob 22, a signal of a shot switch 25 and a memo switch 26, an instruction signal of a speed adjustment knob 27, and a signal of a mode changeover switch 28 are input via 38. Further, the CPU 30 includes a D / A converter 41.
, A control signal, specifically a position signal, is output to the pan driving means 6, the tilt driving means 7 of the camera platform 4, and the zoom driving means 8 and the focus driving means 9 of the zoom lens 3. Servo motors 42 to 45 are installed in the respective driving means 6 to 9 to operate respective driving members to perform pan, tilt, zoom and focus operations, and the respective operating positions are used for position detection. Detected by potentiometers 46-49. Then, the position command signal from the D / A converter 41 and the position detection signals from the position detection potentiometers 46 to 49 are input to the position servo amplifiers 51 to 54, and the servo motors 42 to 45 are set so that they match. Is performed. The remote control of the shooting position of the television camera 1 by the arithmetic processing of the CPU 30 will be described with reference to the flowcharts of FIGS. In FIG. 4, after the control starts upon power-on, initialization is performed in step S1, and the on / off state of the memo switch 26 is read (S2). Then, in step S3, it is determined whether or not the memo switch 26 has been turned on. If this determination is NO, the process directly proceeds to step S5. If the determination is YES and the memo switch 26 is turned on, After setting the writing mode in step S4, the process proceeds to step S5. In step S5, the on / off state of the shot switch 25 is read. In step S6, it is determined whether or not the shot switch 25 has been turned on. When the determination is NO in which the shot switch 25 is in the OFF state, the operation states of the joystick 24, the focus knob 22, and the zoom switch 23 are captured from the signals of the potentiometers 35 to 37 and the rotary encoder 39 in step S7, and the operation amount is determined. The data is converted into position data of a function and added to the current position (S8), and the updated current position signal is output to the position servo amplifiers 51 to 54 of the driving means 6 to 9 via the D / A converter 41 (S8).
9) If there is a deviation from the position detection signals from the position detection potentiometers 46 to 49, the servo motors 42 to 45 are driven so as to match the positions of the input signals, and pan and tilt driving by operating the joystick 24 is performed. , And focus and zoom driving by operating the focus knob 22 and the zoom switch 23 are performed in accordance with the respective manual operation amounts. On the other hand, if the determination in step S6 is YES and any one of the shot switches 25 is turned on, it is determined in step S10 whether or not the writing mode has been set, that is, whether the memo switch 26 has been turned on. It is determined whether or not the current position of the pan, tilt, zoom, and focus (position detection potentiometer) is stored in the address of the memory corresponding to the number of the shot switch 25 that was turned on in step S11.
After writing the position information input to the D / A converter 41 based on the signals 46 to 49), the write mode is released (S12). Subsequently, if the determination in step S10 is NO and only the shot switch 25 is turned on without being in the write mode, the process proceeds to step S13 in FIG. Memory (R
AM31), the pan, tilt,
Reads information on zoom and focus target position Am
In step S14, information on the current position of each function is fetched and substituted into An. Then, the current position An is subtracted from the target position Am of each function to calculate the movement amount D of each (S15), and a function M having the maximum movement amount is selected in step S16. The selection of the function with the maximum movement amount is specifically performed as shown in the routine of FIG. In steps S30 to S33, the target position Pm of each function
FFm and the current positions Pn〜Fn, that is, the movement amounts Pd〜Fd, in which case the movement amounts of the respective functions cannot be simply compared, so the coefficients K1〜K4 in consideration of the maximum movement speed and the like. To unify the comparison levels. Then, in step S34, the pan movement amount Pd and the tilt movement amount Td are compared to determine whether or not the tilt movement amount Td is large.
At the time of S determination, T is written into the maximum function M (S
37) The tilt movement amount Td is written in the maximum movement amount Dmax (S38). On the other hand, when the determination is NO, that is, when the pan movement amount Pd is large, P is written in the maximum function M (S35).
The pan movement amount Pd is written in the maximum movement amount Dmax (S36). Subsequently, in step S39, the maximum movement amount D
It is determined whether or not max is smaller than the zoom movement amount Zd.
If the zoom movement amount Zd is large in the S determination, step S
At 40, Z is written into the maximum function M, and the zoom movement Zd is written into the maximum movement Dmax (S41).
The process proceeds to step S42 together with the time of the O determination, and the maximum movement amount Dma
It is determined whether or not x is smaller than the focus movement amount Fd.
If the focus movement amount Fd is large in the ES determination, F is written in the maximum function M in step S43, and finally the maximum in step S16 is determined by the function names P, T, Z, and F written in the maximum function M. Select the function that will be the amount of movement. Step S17 in FIG. 5 is for determining whether or not the mode changeover switch 28 is in the automatic speed mode in which the automatic mode has been operated. Proceeds to step S19, reads the maximum moving speed Vmax set by the mode changeover switch 28 , and, based on this , calculates the moving amount Mm-Mn of the function of the maximum moving amount at the maximum moving speed Vmax. The minimum movement time t is calculated by the division. When the determination in step S17 is YES and the automatic speed mode is set, the set value V of the moving speed is fetched from the operating position of the speed adjusting knob 27 in step S18. In step S20, it is determined whether or not the function M of the maximum movement amount is the zoom Z. In the case of zooming, the movement time t is calculated by dividing the zoom movement amount Zm-Zn by the set speed V in step S23. I do. On the other hand, if the determination in step S20 is NO and the function M of the maximum movement amount is other than the zoom Z, the current angle of view θ is fetched from the current zoom position Zn in step S21. Then, in step S22, the moving time t is calculated while also performing the speed correction based on the current angle of view θ.
The movement time t is calculated by dividing the movement amount Mm-Mn of the function of the maximum movement amount by the product of the set speed V and the angle of view θ (actually, a coefficient corresponding to the magnitude of the angle of view θ). This
The moving speed according to the current angle of view.
Is corrected so that the moving speed is fast at a large angle of view.
Note that the relationship between the zoom position Zn and the angle of view θ in the above step S21 is obtained by a calculation formula or a conversion table, but since the relationship differs depending on the lens system, the calculation formula or It is necessary to switch the conversion table. Next, in step S24, as described above, the movement amount Am-An of each function is divided by the movement time t obtained in step S19, S22 or S23 as appropriate to calculate the movement amount in each unit time. And each current position An
And updates it as the new current position An. Then, in step S25, the elapse of the unit time t = 1 (for example, several msec to several tens msec) is waited for in synchronization with the update timer, and when the unit time has elapsed, the process proceeds to step S26 to update the updated current position signal to D. Output to the A / A converter 41,
Based on this signal, a position signal is inputted to the position servo amplifiers 51 to 54 of the respective driving means 6 to 9, and the servo motors 42 to 45 are driven by comparison with the position detection signals.
27, it is determined whether or not the target position has been reached. The processing in steps S17 to S26 is repeated until the target position is reached, the current position is updated, and the servo motors 42 to 45 are driven. Is driven so as to stop at the same time at the shooting position corresponding to. According to the above-described embodiment, when moving the photographing position from the movement start position to the target position, the operator instructs the movement speed by the mode switch 28 and the speed adjustment knob 27. However, based on the designated speed, the image moves to the target position at a predetermined speed regardless of where the movement start position is, and performs high-speed movement in the high-speed mode in which the image moves in the shortest time possible. The appropriate moving speed in the auto speed mode to move while requiring
In the case of, the moving speed is corrected in accordance with the size of the angle of view, and even when the zoom is changed in accordance with the movement, control is performed so that the moving speed of the subject on the screen is substantially constant. A desired operation can be obtained only by operating the speed instruction. In particular, in the above-described embodiment, the moving speed is indicated by the speed instead of the time, so that the moving speed is changed at the start time as compared with the case where the moving to the target position is set in time. Regardless of the indication value, it is possible to perform at a speed suitable for moving the image,
The instruction operation is simple, the number of rehearsals can be reduced, and operability can be improved. In the above embodiment, the target position
When the shot switch 25 is operated to move , the speed indicated by the speed adjustment knob 27 and the mode changeover switch 28 is taken in.
When recording the target position information at the address of the memory corresponding to the number 25, the designated speed at that time may be written at the same time, and the target speed information may be read at the same time. Also,
When the maximum movement amount from the movement start position to the destination position is extremely large and the movement time is excessive, the designated speed V in step S18 may be automatically changed (increased) to an appropriate value. . Further, the instruction of the moving speed may be performed by setting the moving time. On the other hand, when the moving speed is calculated as described above, when the photographing position moves in both the pan and tilt directions, the moving speed of the subject is combined with the movement in both directions. In order to move at a speed, the calculation may be performed based on the combined moving speed of the two. In addition, since the pan speed decreases as the tilt angle increases, speed correction based on the tilt angle may be performed. According to the present invention as described above, the movement is started.
Position angle input means for reading the current angle of view including during movement to the target position is provided from the large size screen angle slow moving speed in the small angle of movement speed in accordance with the angle by the speed correction means
It corrected so moving speed increases, the movement start position of each function at the moving time required to move to the target position
Move the maximum amount of function so that the movement ends simultaneously.
By calculating and setting the movement speed of each function based on the movement time of the screen, the set speed is corrected based on the current angle of view, no matter what angle of view the movement starts from. be one subject is moving at a desired speed, becomes unnecessary readjustment of set speed according to the angle of view, and the movement speed to adjust accordingly be angle in the middle of the movement is changed, during movement This makes it possible to improve the unnaturalness of the image, to simplify the operation, to reduce the number of rehearsals, and to improve the operability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a basic configuration diagram for clearly showing the configuration of a television camera remote control device according to the present invention. FIG. 2 is an overall configuration diagram of a television camera remote control device showing a specific example. 3 is a circuit diagram showing a schematic configuration of the controller. [FIGS. 4 to 6] is a main part flowchart for explaining the processing of the controller. [Description of References] 1 TV camera 3 Zoom lens 4 Pan head 6 Pan driving means 7 Tilt driving Means 8 Zoom drive means 9 Focus drive means 10 Controller 11 Drive control means 12 Shot storage means 13 Speed setting means 14 Angle-of-view input means 15 Speed correction means 16 Speed calculation means 25 Shot switch 27 Speed adjustment knob 28 Mode switch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-129579 (JP, A) JP-A-1-248876 (JP, A) JP-A-1-256876 (JP, A) JP-A 52-1982 13086 (JP, A) JP-A-3-78373 (JP, A) Japanese Utility Model Application Sho 55-102265 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/222

Claims (1)

(57) [Claims] [Claim 1] A plurality of functions to be controlled are
Providing a separate drive unit for driving each function of the television camera having, a shot storage unit for storing in advance the position information of each function at a specific shooting position, the target position recorded in the shot storage unit Moving open
A remote control device for a television camera which the control by the drive control means the operation of the drive means so as to end at the same time at the same time start the function from the start position, to the target position stored in the shot storage means and speed setting means that will be set by the speed or time to move speed <br/> degree, the angle input means for reading the current angle including during movement from the movement start position to the target position, the speed setting means and field Receiving the signal of the angle input means, the angle of view input means
Movement speed according to the obtained current angle of view
Speed correction means for correcting the moving speed to be fast at a large angle of view, and the position information of the target position stored in the shot storage means and the speed signal corrected by the speed correcting means.
Response to the issue, required to move to the target position from the movement start position
And a speed calculation means for moving each of the functional in travel time to each operation sets the movement speed of each function based on the travel time of the function of maximum travel to end at the same time, the the speed signal by the speed detector shot A remote control device for a television camera, wherein target position information from a storage unit is input to the drive control unit, and the drive control unit outputs a control signal for moving a drive unit of each function at a respective speed.