JP2002174840A - Preset monitoring device - Google Patents

Abstract

(57) [Problem] To provide an easy-to-monitor preset monitoring device by restricting the amount of image data while moving to a preset position and mainly displaying required image information. . SOLUTION: A camera device 11 including a turntable / lens and an imaging unit, a controller 13 such as a display control unit,
In the preset monitoring device constituted by the display device 14, during a period in which the turntable / lens moves to the preset position, one of the devices constituting the preset monitoring device has an image data amount equal to or less than the image data amount before the start of movement. To control the display device 14 to display an image having a data amount.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a preset image monitoring apparatus capable of controlling a display image of a subject to be freely changed when a turntable or a zoom lens moves to a predetermined position.

[0002]

2. Description of the Related Art Conventionally, when a video signal is monitored by a preset monitoring system including a turntable and a zoom lens, when the turntable and the zoom lens move from a current position to a preset position, The video signal being moved is also displayed on the monitor.

[0003]

However, in the above-mentioned conventional preset monitoring system apparatus, there is no problem in monitoring the displayed image while confirming the displayed image by operating the turntable or zoom lens at a low speed while watching the normal image. It can be used, but once it has been moved to the preset position, the image display until the operation is determined at the target position becomes a meaningless display. This is because recent preset systems can be operated at high speed, especially in an operating state where the preset position is moved and displayed while sequentially determining the preset position. In addition to image information, moving images were frequently displayed.

FIG. 7 shows a display image according to the conventional technique as an image, and a time t1 shows a still image before movement. At time t2, for example, the case where the surveillance camera is rotating and moving is shown, and the image shows a meaningless image such as a moving image. Time t3 is an image obtained when the surveillance camera is directed in a preset direction.

[0005] The image at time t2 is not only meaningless, but also has a relatively dramatic and troublesome display. In addition, when the subject of the high illuminance image enters during the movement to the preset point, a display monitor is required. There is a problem that the visibility of the observer watching the game is impaired, and this leads to a feeling of fatigue.

When a remote monitoring system is used to display an image with image compression or the like, a change component of the image is also transmitted as transmission data, so that the amount of data to be transmitted is inadvertently increased, and a display delay of a target object image is delayed. Or bring.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problem. By limiting the amount of image data while moving to a preset position, necessary image information is mainly displayed, and monitoring is performed. An object of the present invention is to provide an easy preset monitoring device.

[0008]

According to the present invention, there is provided a preset monitoring device, comprising: a camera device including at least one of a rotating base and a lens; and an imaging unit; and a memory unit for storing an image captured by the camera device. In a preset monitoring device including a control device that controls the turntable or the lens and a display device that displays an image captured by the camera device, at least one of the turntable portion and the lens moves to a preset position If you have
The memory unit displays a still image before the start of movement on the display device.

This has the effect of forcibly switching the image display when the turntable or zoom lens is moving to an image with a small amount of data and not displaying the moving image. In addition, the preset monitoring device of the present invention includes a camera device including at least one of the turntable and the lens and an imaging unit, a control device that controls the turntable or the lens, and a plurality of the camera devices connected. In a preset monitoring device including a switching unit for switching output and a display device for displaying an image captured by the camera device, when at least one of the turntable and the lens is moved to a preset position, The switching unit switches to the camera device in which the turntable and the lens are stopped.

[0010] Since the moving image is a fixed image, monitoring by the observer is not strengthened.

[0011] A preset monitoring device according to the present invention includes a camera device comprising at least one of a rotary table and a lens and an imaging unit; a control device for controlling the rotary table or the lens; And a display device for displaying a captured image, wherein at least one of the turntable and the lens is moved to a preset position, the imaging unit changes a signal level of the image. It is characterized by.

By forcibly setting the signal level of an image to, for example, 0, an operation of not displaying an image when moving without using a memory can be realized.

[0013] The preset monitoring device of the present invention is characterized in that when at least one of the turntable and the lens is moving, it is displayed on the display device that it is moving. According to the present invention, a device that can be easily monitored as a monitoring device can be provided.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a system diagram of a basic preset monitoring apparatus. In FIG. 1, a camera unit 11 with a built-in preset rotary base / zoom lens is a single camera at an arbitrary position. With the function to monitor images by manual remote control, it can be automatically moved to one or more positions arbitrarily predetermined by internal or external preset commands,
It comprises a turntable unit 111, a zoom lens 112, a camera unit (imaging unit) 113, and a control unit 114.

The memory unit 12 always writes a video signal from the camera device 11 to a frame memory. Also, the memory unit 12 is provided with a still image from the memory unit 122 from the control unit 114 of the camera device 11 or a control command from the controller in the memory unit 12 while the camera device 11 is moving the turntable / zoom lens. The control unit 123 includes a switch 121 for switching and outputting.

The moving image transmitting apparatus 71 forms a data transmission path together with the moving image receiving apparatus 72 via an ISDN line 73.

The controller 13 has a function for multiplexing video signals and transmitting data, so that a command and a moving state are controlled between the controller of the controller 13 and the controller of the camera 11 and the controller 123 of the memory unit 12. The camera device 11 realizes various operation functions, and the memory unit 12 generates a moving memory control flag. The controller 13 corresponds to the display control unit described in claim 1. The monitor 14 is a commonly used monitoring video monitor, and corresponds to the display device according to the first aspect.

The operation of the preset monitoring device of the present invention configured as described above will be described with reference to FIG. First, when a control command to the preset position is issued from the controller 13, this command is
It is sent to 11 to recognize the moving state, but does not immediately start moving, but first waits until writing W of the memory unit has finished writing one frame. By monitoring the video synchronization signal of the camera, it is confirmed that the writing W has been completed, and at the same time, the writing W is stopped and only the reading R is performed.

At the same time as this timing, the movement of the turntable / zoom lens to the preset position is started, and during this operation, the memory control flag is activated until the movement is completed. Waiting for the end of the video frame at this timing after the return of this flag, and then displaying the new image, the video after the movement is displayed.

As described above, according to the embodiment of the present invention, the image displayed on the monitor 14 is shown in FIG. 3 by providing the frame memory so that the moving image becomes the image before the movement. In this manner, the moving image before moving → the still image before moving → the moving image after moving, so that the image that changes rapidly during moving as in the related art is not performed. That is, during the period when the lens or the like moves, an image having the same data amount as the image data amount before the movement is displayed, so that the display of the display device is not delayed due to the increase in the transmission data amount. In addition,
This effect becomes remarkable when a moving image transmitting / receiving apparatus is applied as a data transmission path.

(Second Embodiment) FIG. 4 shows an example in which the preset monitoring system is applied to a panoramic display system used for watching a fire or a tower. In FIG. 4, a camera device 41 is composed of a single unit, and is a preset rotary base / zoom lens-body camera, which is mounted at a high place like the camera device 11 of the first embodiment. The memory unit 42 controls reading and writing by external control, and stores the input video signal separately in two memories according to the movement of the preset position, and moves when writing is being performed. Display is performed by a memory storing the previous image, and is composed of eight frame memory units and a control unit for data multiplexed on video signals.

The controller 43 is the same as the controller 13 described above. The memory unit 42 monitors the communication state between the controller 43 and the camera device 41 and generates a moving memory control flag for each position. Multiple units, for example, 8
The monitors 44 to 51 are arranged such that eight monitor video monitors that are normally used are arranged in a circle, and surround the periphery of the monitor.
The visibility is enhanced by making a panoramic display of 0 °.

An example in which the present preset monitoring device configured as described above is applied to a panorama display system will be described.
The operation will be described with reference to FIG. First, the controller
From 43, a control command is sent to the camera device 41 so as to move while repeating the preset eight positions sequentially.

The camera device 41 moves accordingly.
After moving from position 8 to position 1 of the camera device 41, when moving to position 1, in the memory unit 1 of the memory unit 42, the image before moving is continuously read from one of the memories. Upon completion of the writing, the other memory is written, and after the writing is completed, the display is switched to the image display of this memory.

Then, the reading operation is maintained until the next image capture of the position 1 is performed by the memory on the opposite side. During this time, the memory for the position 2 displays the image updated last time, and when shifting from the position 8 to the position 1, when moving to the position 2, the memory unit 2 of the memory unit 42 moves from one of the memories. The reading of the previous image is continued, and the writing to the other memory is performed at the same time when the movement to the position 2 is completed.

Then, the read operation is maintained until the next image capture of the position 2 is performed by the memory on the opposite side. Similarly, when the camera advances to the position 8, as a result, the entire periphery can be monitored by displaying the fixed image without displaying an image during the period when the camera device 41 is moving.

As described above, according to the second embodiment of the present invention, by providing the frame memory so that the moving image becomes the image before the movement, the image displayed on the monitor can be replaced with the moving image. Do not show. In addition, one camera has 8
By displaying the video signal of the position, it is possible to display it as if it is monitoring using eight cameras, and to build a system of surveillance situation with a sense of realism such as looking up at fire and looking around be able to. Further, in the image in the zoom state according to the second embodiment, conventionally, it is difficult to realize the monitoring device from the viewpoint of a large low-speed rotation and a large convergence time of the camera due to the movement due to the large size. However, a suitable display system with a short image update time can be realized by applying a recent preset rotary table having a miniaturized high-speed operation mechanism system.

In the above description, an example has been described in which a dedicated image memory is added for an image to be displayed during the moving period. However, particularly in the case where the stored image is sufficient for one position as in the first embodiment, It is also possible to rationally realize functions without adding a new memory by displaying a moving image by diverting a memory used inside the device.

(Other Embodiment) Next, another embodiment of the present invention will be described with reference to FIG. In FIG. 6, a camera device 21 similar to the original camera device 11 is prepared. In the switching unit 62 of the camera device 11 from the beginning,
The input side of the switching unit 622 is switched to an input from another camera device 11. Therefore, the output side of the switching unit 622 is connected to the switch 621.

When the controller 13 causes the display monitor 14 to transmit the output of the camera device 11 that is initially capturing an image,
The movement of the other camera device is not particularly limited and may or may not be moved. The image moves following the camera device 11 or is an image of the camera device 21 that is uniquely determined.If the image moves following the camera device 11, the camera device 11 on the side that is initially capturing the image is moving. Then, the display is switched to the camera device 21 and the movement of the camera device 21 on the other side is executed immediately after the display is completed. Therefore, image input to the controller 13 is performed by the camera device 11
The image on the monitor 14 can be maintained in a real-time monitoring state without causing a drop in the image during the moving period to make the image stationary.

Another embodiment will be described.
In this embodiment, the memory unit 12 shown in FIG.
Use those excluding. When the camera device 11 starts moving to the preset position, the camera device 11 simultaneously performs a process of limiting the amplitude of the moving output signal (for example, a process of forcibly setting the signal level to 0). for that reason,
The video signal display required for monitoring is not performed. An image having a data amount equal to or less than the image data amount before the movement is started is transmitted to the display device. That is, the amplitude of the image signal reaching the controller 13 is limited to an extremely small amplitude, and even if monitored on the monitor 14, the image cannot be substantially understood. The indication of a temporary drop in signal level makes it easier for the observer to recognize that there is no need for enhanced surveillance. When the camera device 11 finishes moving and starts imaging again, the controller 13 suspends the operation of limiting the amplitude.

Next, another embodiment will be described. In this embodiment, in a component shown as a memory unit 12 in FIG. 1, there is a camera device as a portion having a recording unit, and other than the memory unit, the inside of a peripheral device such as a display control unit, a display device, and the like can be mentioned. it can. Since the recording unit is installed at an appropriate location, any of the devices constituting the system can often effectively use the memory mounted on the device, and reduce the total cost. Implementation of the present invention is easy.

In another embodiment, as for the control method of the controller 13 shown in FIG. 1, data on the operation of the camera at the start of movement, during the movement, and at the end of the movement are transferred to the camera device 11 respectively. Side, and the display image on the monitor 14 can be switched according to the information. Alternatively, it is checked whether or not the time required for the movement has been exceeded, and when the time has been exceeded, the image on the display device is switched.

The next embodiment will be described. While the camera device 11 is moving, the fact that the camera device 11 is moving is displayed on the screen of the monitor 14 as a display device. The display can call attention to the monitor.

[0036]

As described above, according to the present invention, when the turntable or the zoom lens is moved to the preset position, during the movement, whether the image data amount is the same as the image data amount compared to the image before the movement. Since an image having a data amount smaller than that is transmitted, it is possible to provide a preset monitoring device with improved visibility by displaying only image information necessary for monitoring.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a basic preset monitoring device according to a first embodiment of the present invention;

FIG. 2 is a timing chart for explaining a memory control operation before and after movement to a preset position according to the first embodiment of the present invention;

FIG. 3 is a display image image diagram when the display is performed by memory control according to the first embodiment of the present invention;

FIG. 4 is a system diagram of a panorama display system according to a second embodiment of the present invention,

FIG. 5 is a timing chart for explaining a memory control operation before and after movement to each preset position according to the second embodiment of the present invention;

FIG. 6 is a schematic configuration diagram showing another embodiment of the present invention;

FIG. 7 is a diagram showing that a monitor screen is changed by a preset monitoring device having a conventional configuration.

[Explanation of symbols]

 11 Camera unit 12 Memory unit 13 Controller 14 Monitor 21 Other camera 41 Camera unit with turntable 42 Memory unit 43 Controller unit 44 to 51 Monitor unit 62 Switching unit 71 Video transmitter 72 Video receiver 73 ISDN line 111 Turntable 113 Imaging unit 114 Control unit 121 Switch 122 Memory unit 123 Signal control unit 621 Switch 622 Switching unit

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Claims (4)

[Claims] 1. A camera device comprising at least one of a turntable and a lens and an image pickup unit, a memory unit for storing video captured by the camera device, and a control device for controlling the turntable or the lens And a display device for displaying an image captured by the camera device. If at least one of the turntable and the lens is moving to a preset position, the memory unit starts moving. A present monitoring device wherein a previous still image is displayed on the display device. 2. A camera device comprising at least one of a turntable unit and a lens and an image pickup unit, a control device for controlling the turntable unit or the lens, and a plurality of the camera devices are connected and output is switched. In a preset monitoring device including a switching unit and a display device that displays an image captured by the camera device, when at least one of the turntable unit and the lens is moving to a preset position, the switching unit is A preset monitoring device for switching to the camera device in which the turntable and the lens are stopped. 3. A camera device comprising at least one of a turntable and a lens and an image pickup unit, a control device for controlling the turntable or the lens, and a display for displaying an image captured by the camera device. Wherein at least one of the turntable and the lens is moved to a preset position, the imaging section changes the signal level of the image, wherein the preset monitoring is performed. apparatus. 4. The preset according to claim 1, wherein when at least one of the turntable and the lens is moving, the display device indicates that it is moving. Monitoring device.