JPH0486085A - Television monitoring system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television monitor system, and more particularly to a television monitor system in which the imaging direction of a television camera can be adjusted to a desired position.

[Prior Art] As television cameras have become smaller, lighter, and cheaper in recent years, various types of intercoms with monitor televisions (hereinafter referred to as video doorphones) have been developed.

Figure 3 shows the intercom handset (
FIG. 2 is an external side view showing an example of a camera unit.

FIG. 4 is an external front view of an intercom base unit (monitor unit) and an intercom slave unit (camera unit) of a conventional video door intercom and an embodiment of the present invention.

A conventional video door intercom has an integrated structure in which an intercom slave unit B shown in FIG. 3 is connected to an intercom base unit A via a signal line C as shown in FIG. 4. Referring to FIG. 3, the intercom handset B includes an intercom handset body 1, a television camera body 3, a television camera portion 6 including the lens stand 4 and a camera lens 5, and is attached to the top, bottom, left and right of the lens stand 4. 4 rods 2
a% 2b, 2c, and 2d are expanded and contracted by a motor (not shown) to drive the television camera section 6 vertically and horizontally.

A mechanism that combines a tilt mechanism that moves the television camera portion 6 in the vertical direction and a pan mechanism that moves it in the horizontal direction is generally referred to as a pan-tilt mechanism.

Here, the aforementioned four rods 2a, 2b, 2c, 2d
A mechanism for expanding and contracting the image by a motor (not shown) will be explained.

The motor and the four rods, which are loads related to the motor, are connected via a clutch.

That is, one shaft of the clutch is connected to the motor side and the other shaft is connected to each of the rods, and each of the rods is expanded and contracted while converting the rotational motion of the motor into linear motion via the clutch. I am exercising. At this time, the two shafts are coupled using the friction of the clutch plate, and power from the motor is applied to each rod via the coupled shaft to perform the telescoping motion.

Therefore, the television camera portion 6 is tilted vertically and horizontally due to the difference in expansion and contraction of each rod.

Referring to FIG. 4, the intercom base unit A includes an intercom base unit body 7, a handset 8 for communicating with a visitor by voice, a monitor screen 9 for projecting an image of a subject by the visitor, and a television camera portion 6. It includes a pan/tilt switch 10 that is operated to output a signal for driving vertically, horizontally, and horizontally, and a signal line C for exchanging signals with an intercom handset B.

With the above video doorphone, in response to a visitor's call, a person in the room operates the pan/tilt switch 10 of the intercom base unit A to move the TV camera portion 6 of the intercom slave unit B to the visitor's position. You can move towards it. A video signal from the visitor captured by the television camera body 3 is sent to the intercom base unit A via the signal line C. Then, the visitor's appearance is displayed on the monitor screen 9 of the intercom base unit A.

As a result, those in the room can converse with visitors not only by voice but also by looking at the screen, which is very convenient.

By the way, as a method for stopping the movement of the television camera section 6, it is conceivable that the end of the lens stand 4 comes into contact with the handset main body 1 to lock the vertical and horizontal drive sections 2. This state is shown in the diagram illustrating the case where the lens stand 4 hits the intercom handset 1 in FIG. 5.

Referring to FIG. 5, at this time, each rod 2a.

2b, 2c, and 2d are locked so that they cannot extend any further, but the motor continues to rotate as usual. Therefore, the clutch mechanism that transmits the rotation of the motor to the linear motion of each rod operates to separate the two motions in response to detecting an overload of the motor, so that the rotational motion of the motor is transferred to the linear motion of each rod. This prevents it from being transmitted to linear motion.

At this time, if the visitor is short and the TV camera section 6 is moved downward as far as it will go, the lower end of the lens stand 4 will hit the intercom handset main body 1 and damage the handset main body 1. . In addition, when a person in the room operates the pan/tilt switch 10 of the intercom base unit A,
Care must be taken to prevent the lens stand 4 from hitting the intercom handset body 1, which poses a problem in operability.

Further, if the visitor is not displayed, the pan/tilt switch 10 may be kept pressed in an attempt to direct the television camera portion 6 downward, which may cause the motor to burn out.

In view of this problem, a pan/tilt mechanism for an intercom with a monitor TV is provided that prevents the lens stand 4 from hitting the intercom handset body 1 as described above and improves the operability of the pan/tilt switch 10. It was done.

Figure 6 shows the intercom handset (
FIG. 7 is an internal circuit configuration diagram of the intercom handset body shown in FIG. 6 above.

Note that the configuration of the intercom base unit A is the same as that shown in FIG. 4 above, and a description thereof will be omitted.

Referring to FIG. 6, another example of the conventional intercom handset B
The difference in structure between this and the intercom slave unit B shown in FIG. A lower limit microswitch 12 is arranged at a position where the lower end of the lens stand 4 and the intercom handset main body 1 touch, and a left limit microswitch 13 is arranged at a position where the left end of the lens stand 4 and the intercom handset main body 1 touch.
is arranged, and a right limit microswitch 14 is arranged at a position where the right end of the lens stand 4 and the intercom handset body 1 are in contact with each other. Note that the other configurations are the same as the intercom handset B shown in FIG. 3 described above, so
Explanation regarding them will be omitted.

When each of the microswitches comes into contact with the lens stand 4,
In response, the contact is closed, and a low-level signal indicating that it has been detected that the lens stand 4 has come into contact with the intercom handset body 1, that is, that the television camera portion 6 has moved and reached its maximum movement range. Output.

In FIG. 7, the intercom handset body 1 includes terminals 23 and 24 to which a power supply voltage is applied, and a current limiting resistor Ra5Rb connected to the terminal 23.

Micro switch 11.1 connected between Rc, Rd, each of the resistors Ra, Rb, Re, Rd, and the terminal 24
2.13.14, an AND gate 15 which inputs the pan/tilt operation signal "right" from the intercom base unit A and a signal from the microswitch 14, and an AND gate 15 which inputs the pan/tilt operation signal "left" and the signal from the microswitch 13. an AND gate 16 that receives the pan/tilt operation signal "lower" and the signal from the microswitch 12 as inputs, and an AND gate 18 that receives the pan/tilt operation signal "up" and the signal from the microswitch 11 as inputs.
A motor control circuit 19 is provided that drives the left and right motors 21 or the vertical motors 22 via the connector 20 in response to the outputs of the AND gates.

When the output of the AND gate 15 becomes high level, the motor control circuit 19 rotates the left and right motors 21 in the normal direction, and
When the output of the D gate 16 becomes high level, the left and right motors 21 are reversed. Further, when the output of the AND gate 17 becomes high level, the vertical motor 22 is rotated in the forward direction, and the AND
When the output of the gate 18 becomes high level, the vertical motor 22
Reverse.

Next, the operation of the video door intercom shown in FIGS. 6 and 7 will be described.

Now, there is a visitor, and a ring tone is output from the intercom base unit A in the room, and the person in the room picks up the handset 8 and checks the face or figure of the visitor while looking at the monitor screen 9. Pan/tilt switch 10 shown in
Move it up, down, left, or right. For example, when the television camera section 6 is directed downward, the signal "down" in FIG. 7 is set to the /S level by operating the pan/tilt switch 10. Therefore, the AND gate 17 provides a high level signal to the motor control circuit 19 until the microswitch 12 outputs a low level signal. Motor control circuit 19 drives vertical motor 22 in response to the signal level from AND gate 17 . This causes the television camera portion 6 to face downward. and,
When the television camera section 6 moves and the microswitch 12 is turned on, a low level signal is output from the microswitch 12 and the output of the AND gate 17 changes to low level. In response to this signal change to low level, the motor control circuit 19 stops driving the vertical motor 22. This can prevent the lens stand 4 from hitting the intercom handset body 1. Similarly, even if the television camera part 6 is moved upward, to the left, or to the right, the contacts of the microswitches 11, 13, and 14 attached to the intercom handset body 1 are closed, so that the upper and lower motors 22 and the left and right The operation of the motor 21 is stopped, and the lens stand 4 no longer tilts. That is, the operation of the vertical, horizontal, and horizontal drive portions 2 is completely stopped.

[Problems to be Solved by the Invention] However, when a clutch mechanism is provided in the pan/tilt mechanism of a television camera as in the past, when each rod is locked and an overload is applied to the motor, the rotational movement of the motor is changed accordingly. The motor is controlled to be separated from the linear (expanding and contracting) movement of each rod, but if the pan/tilt signal input from the intercom base unit (monitor unit) continues to be input to the intercom slave unit (camera unit), the motor will not rotate. continue. Therefore, there is a problem that (1) noise such as the rotation sound of the motor and the operation sound of the clutch mechanism is generated, which gives a feeling of discomfort to visitors. Furthermore, (2) since the lifespan of a motor is determined by its operating time, there is a problem that the lifespan of the motor and the product itself equipped with the motor are shortened. moreover,(
3) The pan/tilt mechanism of a camera is usually constructed from a resin material, but as mentioned above, the clutch mechanism involves frictional motion, which causes significant wear and shortens its operating life. .

Further, when detecting the limits of the pan/tilt operation of the camera unit using a sensor or a limit switch as in other conventional examples, it is necessary to independently detect the upper, lower, left, and right directions. Therefore, (4) a sensor or a limit switch must be installed in each of the four directions, resulting in the problem of an increase in the size and cost of the pan/tilt mechanism. In addition, (5) since the intercom handset (camera part) is installed outdoors, there is a problem that the sensors mentioned above may malfunction due to rainwater erosion, or may malfunction due to contamination with dust or dust. .

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a television monitor system that enables improved operability and simplified structure in adjusting the angle of a television camera.

[Means for Solving the Problems] A television monitor system according to the present invention includes a television camera, and a monitor television that is installed at a position away from the television camera and displays a screen based on a video signal sent from the television camera. and a monitor device having a setting switch for setting the imaging direction of the television camera to up, down, left, or right, and in detail, it includes an imaging direction moving means, a clocking means, a detection means, a stopping means, It is composed of:

The imaging direction moving means is provided to move the imaging direction of the television camera in response to a signal from the setting switch. The time measuring means operates to time the signal input duration period of the setting switch, and the detecting means operates to detect that the time measured by the time measuring means has passed a preset time, This detection output is given to the stopping means, and the stopping means operates accordingly to stop the imaging direction moving means.

[Operation] Since the television monitor system according to the present invention is configured as described above, the detection means activates the stop means based on the time measured by the time measurement means. By setting the detection reference time to a desired value, it is possible to prevent the imaging direction moving means from being driven more than necessary. Further, since the driving means is automatically stopped based on the detection reference time of the detecting means, the user can move the television camera in the imaging direction without worrying about over-driving the imaging direction moving means. You can perform operations for

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Note that the external appearance of the intercom with monitor television according to one embodiment of the present invention is similar to that shown in FIG. 4, so a detailed description thereof will be omitted.

Further, the side appearance of the intercom handset (camera unit) B is also the same as that shown in FIG. 3 described above, so a detailed explanation thereof will be omitted.

FIG. 1 is a functional configuration diagram of an intercom with monitor television according to an embodiment of the present invention.

As shown in the figure, the intercom with monitor TV consists of an intercom base unit (monitor unit) A installed indoors and an intercom slave unit (camera unit) B connected via a signal line C and installed outdoors. Ru.

The intercom base unit (monitor unit) A is the handset 8
, a monitor screen 9, a pan/tilt switch 10, a multiplexing circuit section 31, a video signal processing section 34, a microcomputer section 36, and an angle control signal sending section 38.

The handset 8 includes an indoor microphone 81 and an indoor speaker 82 for communicating with a visitor by voice.

The multiplexing circuit section 31 includes a power supply circuit and a modulation/demodulation processing circuit, and operates to perform modulation/demodulation processing by frequency multiplexing processing of input/output signals and supply power to each section. That is, it receives the video signal sent from the intercom handset (camera 11) B connected to the previous stage, demodulates it accordingly, and gives the demodulated video signal to the video signal processing section 34 of the next stage. There is. In parallel, the audio signal from the voice input from the indoor microphone 81 is modulated and given to the next stage intercom handset (camera part) B, and the audio signal sent from the intercom handset (camera part) B is received, demodulated accordingly, and the demodulated audio signal is provided to the next-stage indoor speaker 82.

As described above, the video signal sent from the preceding intercom handset (camera unit) B is demodulated by the multiplexing circuit unit 31 and displayed on the monitor screen 9 via the video signal processing unit 34, and the audio signal is Indoor microphone 81 and indoor speaker 8
2, and calls are made both indoors and outdoors.

The microcomputer unit 36 includes a CPU (abbreviation for central processing unit), memory, counter, timer, and the like. The microcomputer section 36 is given an ON10FF signal FS of a hook switch whose opening/closing is controlled in conjunction with the raising and lowering of the handset 8, and accordingly the execution of a built-in program (described later) is controlled. Further, it drives and controls the signal sending of the angle control signal sending section 38 connected to the next stage in accordance with the signal given from the pan/tilt switch 10 connected to the previous stage. The angle control signal sending unit 38 generates a control signal for rotating the left and right motors 21 or the vertical motor 22 in the forward or reverse direction according to the control of the microcomputer unit 36 in the previous stage, as described in FIG. It operates so as to provide the signal to the conversion circuit section 31.

On the other hand, the intercom handset (camera section) B includes an outdoor speaker 25, an outdoor microphone 26, a camera head section 40, a CCD
(Charge Coupled Device) includes a signal processing section 43, a multiplexing circuit section 44, and further includes:
A pan/tilt mechanism unit 49 incorporating a call switch 45, an angle control signal receiving unit 46, a motor drive unit 47, and a motor 48
It consists of:

The camera head section 40 further includes an auto iris lens section 41 and a 000 section 42, and the incident light from the subject whose light intensity is automatically adjusted by the auto iris lens section 41 is transmitted to the light receiving surface of the next stage 000 section 42. Light is received and photoelectrically converted accordingly. The optical signal thus obtained is provided to the CCD signal processing section 43 at the next stage.

The CCD signal processing section 43 processes the applied optical signal, converts it into a video signal, and supplies this to the multiplexing circuit section 44 at the next stage.

The multiplexing circuit section 44 inputs the video signal from the CCD signal processing section 43 connected at the previous stage, modulates it accordingly, and sends it to the intercom main unit (monitor section) via the signal line C.
to the multiplexing circuit section 31. Furthermore, audio signals are transmitted and received between the outdoor speaker 25 and the outdoor microphone 26 and the intercom base unit (monitor unit) A for indoor and outdoor calls.

The call switch 45 is an intercom handset (camera part)
The contact point is configured to be opened/closed in conjunction with a call button (not shown) provided on the outside of B and pressed by the visitor. When the call button is pressed by the visitor and the contact of the call switch 45 is closed, a predetermined signal is sent to the microcontroller via the multiplex circuit section 44 and the multiplex circuit section 31 of the intercom base unit (monitor section) A. It is given to the computer section 36. Therefore, the microcomputer section 36 can confirm the presence or absence of a visitor in response to the signal from the call switch 45.

The angle control signal receiving section 46 receives the control signal transmitted from the angle control signal transmitting section 38 of the intercom base unit (monitor section) A via the multiplexing circuit sections 31 and 44, and decodes the received control signal accordingly. (decode) and provide this to the motor drive unit 47 at the next stage.

The motor drive unit 47 includes a motor control circuit 19 and a connector 20, as shown in FIG.
Based on the applied decoded control signal, the rotation of the motor 48 connected to the next stage is controlled.

The motor 48 includes the left and right motors 21 and the vertical motors 22 shown in FIG. Transmitted to the linear motion of the rod. Therefore, the lens stand 4 is tilted vertically and horizontally by the telescopic movement of the vertical and horizontal rods of the vertical and horizontal drive portions 2, and the tilt of the camera head section 40 placed on the stand is controlled. In this way, the viewing range of the outdoor camera head section 40 is adjusted, and an image within the viewing range desired by the user can be displayed on the indoor monitor screen 9.

FIG. 2 is a schematic process flow diagram showing the operation of the intercom with monitor television shown in FIG. 1 when the pan/tilt mechanism is driven.

The illustrated process is performed by a visitor using an intercom handset (
It is started in response to detecting that a call button provided on the outside of camera unit (B) has been pressed. Further, this processing flow is stored in advance as a program in the internal memory of the microcomputer unit 36 shown in FIG. 1, and is executed under the control of the CPU.

Furthermore, a maximum operation time that limits the duration of the angle adjustment operation of the camera head section 40 is predetermined and stored in the internal memory of the microcomputer section 36.

This maximum operation time is such that when the angle adjustment is performed, for example, the camera part 6 facing the lowest (left) direction is the most upper (
Right) is the time required to turn to the right direction.

Next, the operation of the intercom with monitor television according to an embodiment of the present invention when the pan/tilt mechanism is driven will be described in detail with reference to FIGS. 1 and 2.

CPU of the microcomputer section 36 shown in FIG.
is set to a standby mode state, which is normally a waiting state.

That is, the CPU is in a state of waiting for an input signal from the call switch 45 when the call button is pressed. Therefore, C.P.
U performs the loop processing of step 510 (abbreviated as S10 in the figure) and step S15 in FIG.
The process is repeated until it is determined in step 5 that a signal has been input by pressing the call button from the call switch 45, thereby continuing the standby mode.

In the process of step S15, when the CPU determines that there is a signal input by pressing the call button, it starts executing the processes from step S20 onwards.

First, in the processing of steps S20 and S25, power is supplied to the indoor and outdoor microphones 26 and 81 and speakers 25 and 82, and they are set to a state where they can talk. In parallel with this, power is also supplied to the monitor screen 9, and the monitor screen 9 is set in a state where it can display the visitor.

As a result, the image based on the video signal captured by the camera head section 40 is displayed on the monitor screen 9, so that it is possible to have a conversation while displaying the visitor on the monitor screen 9.

Now, the person in the room checks the image on the monitor screen 9 to confirm the visitor. At this time, if the visitor is not displayed, operate the pan/tilt switch 10 to bring the visitor into the camera's imaging range. Adjust the angle of the camera head section 40 so that the image can be captured. This pan tilt switch 10
An angle setting signal generated by the operation is given to the microcomputer section 36.

In the process of the next step S30, the CPU determines whether the angle setting signal is input or not, and branches the process to either step S35 or step S40 based on the determination result.

As a result of the judgment based on whether or not the angle setting signal is input, there is no input of the angle setting signal, that is, the pan/tilt switch 10
If it is determined that the angle setting signal is not operated, the process moves to the next step S35, and conversely, the angle setting signal is input.
That is, if it is determined that the pan/tilt switch 10 has been operated, the process branches to the next step S40 and subsequent steps.

In response to the above-described pressing of the call button by the visitor, the handset 8 is raised and a call is made, so the call is made in step S35.
In the process, it is determined whether or not this call has ended. In other words, while the CPU detects that the hook switch ON10 FF signal FS is given by raising and lowering the handset 8 and that the call has not ended (
While the signal FS is 'ON', the process returns to step S30 described above, and thereafter the process is repeated in the same manner.

On the other hand, if the end of the call is detected (the signal FS changes to "OFF"), the angle adjustment process for projecting the visitor is not necessary, so the CPU repeats the step S described above again.
Returning to the IO process, the system enters a standby mode in preparation for the next visitor.

As described above, the loop processing of steps S30 and S35 is performed immediately when the angle setting signal is input from the camera head section 40 even if the handset 8 is used to talk to a visitor outdoors. The process is executed so that it can branch to the process after step S40 based on the angle setting signal.

In the above-described determination process of step S30, if it is determined that there is an angle setting signal input, the process moves to the next step S40, and an angle control signal corresponding to the input angle setting signal is transmitted to the intercom handset (camera unit). ) The angle control signal transmitting section 38 is controlled so that the angle control signal is transmitted to B.

In the process of the next step S45, the CPU resets the internal timer and starts measuring the angle adjustment operation time of the camera head section 40 at the same time as the above-mentioned angle control signal transmission starts.

After that, the process moves to the next step S50.

In the process of step S50, the CPU determines whether or not an angle setting signal is input due to the operation of the pan/tilt switch 10, and based on the determination result, the CPU determines whether or not the angle setting signal is inputted.
5 and step S60.

In the determination process of step S50, if it is determined that the angle setting signal is not input, the process moves to the next step 355.

In the process of step S55, in response to the stop of the input of the angle setting signal due to the stop of the operation of the pan/tilt switch 10, the CPU controls the next stage angle control signal sending unit 38 to stop sending the angle control signal. Process as follows. When the transmission of the angle control signal is stopped in this way, the process returns to step S30, and the process is repeated thereafter in the same manner.

On the other hand, in the process of step S50 described above, while it is determined that the angle setting signal is input, the next step S6
Shift to process 0.

In the process of step S60, the CPU determines whether the time measured by the above-mentioned timer exceeds the maximum operating time previously stored in the internal memory. This determination process is performed based on a comparison between the time measured by the timer and the stored maximum operating time. At this time, while (clocked time≦maximum operation time) is satisfied, the process returns to step S50 again and continues until step S50 is determined that there is no angle setting signal input.
And the loop process of step S60 is repeatedly executed.

On the other hand, if (clocked time > maximum operating time) holds,
The process immediately moves to the next step S65. In other words, if the operation of the pan/tilt switch 10 is continued, the CPU
If the angle setting signal continues to be input after exceeding the maximum operation time, the transmission of the angle control signal is stopped in the process of the next step S65 in the same manner as the process of step S55 described above. Operate.

Thereafter, in the process of step S70, it is determined whether or not the angle setting signal is continuously input.
While it is determined that there is an input, the determination process in step S70 is repeatedly executed, and on the contrary, when it is determined that there is no input, the process returns to step S30 again, and thereafter the process is repeatedly executed in the same manner.

As described above, if the operation of the pan/tilt switch 10 is continued after the maximum operation time is exceeded, the microcomputer section 36 processes to stop transmitting the angle control signal, and adjusts the angle of the camera head section 40. Processing is performed to forcibly terminate (stop) the operation. therefore,
Since the pan/tilt mechanism 49 will not operate beyond the maximum operating time, that is, beyond the upper limit (limit) of the angle adjustment range, the motor 4
Noises such as the rotating sound of the engine 8 and the operating sound of the clutch mechanism will no longer cause discomfort. Furthermore, since the upper limit of the angle adjustment range is detected without providing a detection section such as a sensor, the configuration of the pan/tilt mechanism section 49 can be simplified, and the intercom with monitor TV itself can be made smaller and lower in cost. It is also possible to aim for

In this embodiment, the maximum operation time is the maximum time required for angle adjustment, but a shorter time may be set. In this way, the time during which the pan/tilt mechanism section 49 operates unnecessarily can be further shortened.

Furthermore, although this embodiment describes the case where the TV monitor system is applied to an intercom with a monitor TV, the applicable light is not limited to this, and may be applied to TV cameras in general, such as security cameras, surveillance cameras, etc. It's okay.

[Effects of the Invention] As described above, according to the present invention, it is possible to detect when the duration of the imaging direction adjustment operation of the television camera in the imaging direction moving means exceeds a preset maximum time by using the timing means and the detection means. Detected.

Since the stopping means is activated in response to the detection result, the imaging direction moving means will not be driven beyond the maximum time, and the operational life of the television monitor system itself can be extended.

Furthermore, since it is not necessary to provide the imaging direction moving means with a sensor for detecting an angle that determines the imaging direction of the television camera, the angle adjustment mechanism of the television camera itself can be simplified, and as a result, the angle adjustment mechanism of the television camera itself can be simplified. As a result, the television monitor system itself can be made smaller and lower in price.

[Brief explanation of the drawing]

FIG. 1 is a functional configuration diagram of an intercom with monitor television according to an embodiment of the present invention. FIG. 2 is a schematic processing flow diagram showing the operation of the intercom with monitor television shown in FIG. 1 when the pan/tilt mechanism is driven. FIG. 3 is an external side view showing an example of an intercom handset (camera section) of a conventional video door intercom. FIG. 4 is an external front view of an intercom base unit (monitor unit) and an intercom slave unit (camera unit) of a conventional video door intercom and an embodiment of the present invention. FIG. 5 is a diagram illustrating a case where the lens stand comes into contact with the intercom handset. FIG. 6 is an external side view showing another example of the intercom handset (camera unit) of the conventional video door intercom. Figure 7 shows the 6th
FIG. 3 is an internal circuit configuration diagram of the intercom handset body shown in the figure. In the figure, A is the intercom base unit (monitor unit), B is the intercom slave unit (camera unit), 9 is the monitor screen, and 10 is the intercom base unit (monitor unit).
is a pan/tilt switch; 36 is a microcomputer section; 38 is an angle control signal sending section; 40 is a camera head section;
45 is a call switch, 46 is an angle control signal receiving section, 47
48 is a motor, and 49 is a pan/tilt mechanism. In each figure, the same reference numerals indicate the same or corresponding parts. Figure Figure A: A;
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Claims (1)

[Scope of Claims] A television camera, a monitor television that is installed at a position away from the television camera and displays a screen based on a video signal sent from the television camera, and the imaging direction of the television camera is set to vertical or horizontal directions. A television monitor system comprising: a monitor device having a setting switch for setting the setting switch; a clock means for measuring the duration of the signal input; a detecting means for detecting that the time measured by the clock means has elapsed a preset time; A television monitor system comprising a stopping means for stopping a moving means.