JP2016039543A - Camera unit, led illumination with camera unit, and remote camera system including camera unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constantly perform imaging in a desired direction and easily check image information even from a remote.SOLUTION: Since a camera unit 40 is capable of changing the orientation of a camera 46 on the basis of an operation command signal from a portable terminal 60 or an information processor 70 and transmitting image information captured with the camera 46 to the information processor 70, the camera unit 40 is capable of performing imaging with desired timing and easily checking captured information even with the portable terminal 60 or the information processor 70 that is a remote place.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a camera unit, an LED illumination having a camera unit, and a remote camera system including the camera unit.

  Conventionally, LED lighting with a security camera attached is known. For example, in Patent Document 1, an LED that is attached to an illuminating unit of an illuminating device and includes a detection unit and an imaging unit that detect the approach of an object, and whether the detection direction of the detection unit or the imaging direction of the imaging unit can be changed by the movable unit. Illumination is described. In this LED illumination, when the approach is detected by the detection unit, the shooting direction of the shooting unit can be changed, so that shooting in a plurality of directions can be performed.

JP 2014-110181 A

  However, such LED illumination has a problem that the video information cannot be easily confirmed from a remote place because the video information captured by the imaging unit is stored in a built-in storage medium. Further, since the storage capacity of the storage medium is limited, there is a problem that the video information cannot be stored more than the capacity of the storage medium and the necessary video information may not be obtained.

  The present invention has been made in view of such problems, and provides a camera unit that can always shoot in a desired direction and can easily check video information even from a remote location. The main purpose.

  The present invention adopts the following means in order to achieve at least one of the above-mentioned main objects.

The camera unit of the present invention is
It is a camera unit for LED lighting that uses a straight tube type LED attached to a socket part,
An attachment part attached to the socket part;
A power supply unit that attaches the straight tube type LED and supplies power to the straight tube type LED; and
Photographing means capable of changing the direction of a lens for photographing an object based on an external signal;
Communication means for transmitting video information including video captured by the imaging means and receiving a change command signal for changing the direction of the lens;
Control means for controlling the photographing means based on the change command signal;
Characterized by comprising
Is.

  In this camera unit, it is possible to easily attach to the LED illumination by attaching the attachment portion to the socket portion of the LED lighting instead of the straight tube type LED and attaching the straight tube type LED to the power supply portion of the camera unit. At this time, since the camera unit can change the direction of the lens based on a change command signal from the outside, it can take a desired direction. In addition, since it has communication means for transmitting video information captured by the imaging means, it is possible to store video information without being limited by the capacity of the storage medium. Can be confirmed.

  The camera unit of the present invention comprises storage means for storing the video information, and the control means transmits the video information stored in the storage means to the outside using the communication means at a predetermined timing. This may be a feature. In the camera unit of the present invention adopting this aspect, the control means transmits the video information by the communication means when the storage capacity that can be stored in the storage means is not more than a predetermined value. The video information may be deleted from the storage means. In this way, the video information captured by the imaging means is transmitted at a predetermined timing, so that the video information can be easily confirmed from a remote location. In addition, since the video information is deleted after being transmitted, the video information can be photographed and stored without being limited by the storage capacity of the storage means.

  In the camera unit of the present invention, the control unit may control power supplied from the power supply unit to the straight tube type LED to be ON or OFF. In this way, since the straight tube type LED can be turned on or off by operating the camera unit, for example, when the amount of light is small at the time of photographing, the straight tube type LED is turned on, or the straight tube type LED is used in the daytime. When it is not necessary to turn on the LED, the straight tube type LED can be turned off. In addition, when the amount of light is insufficient, the straight tube type LED is turned on to secure a sufficient amount of light to capture a clear image, and when the amount of light is sufficient, the straight tube type LED is turned off. Can contribute to power saving.

  The camera unit of the present invention may include sound collecting means for collecting sound. In this way, since audio information can be obtained in addition to the video information, for example, even when an abnormality occurs outside the imaging range of the imaging means, the occurrence of the abnormality can be confirmed by the audio information.

  The camera unit of the present invention may include sound emitting means for emitting sound, and the communication means may receive sound data emitted by the sound emitting means. In this way, sound can be emitted from the sound emitting means by transmitting sound data from the outside to the camera unit. For example, when an abnormality is found in the photographing means, an abnormality is detected around the camera unit. Can be notified or a warning can be issued.

  The camera unit of the present invention may include power saving means for saving electric power. In this way, even if no power is supplied to the LED illumination, it is possible to take a picture with the camera unit. Moreover, even if it is a case where electric power is not supplied to LED illumination, straight tube | pipe type LED can be lighted.

  The LED illumination according to the present invention includes any one of the above-described camera units attached to the socket portion, and a straight tube LED attached to the attachment portion. Since this LED illumination has the camera unit described in any of the above, it is possible to store video information without being limited by the same effect as the camera unit described above, for example, the capacity of the storage medium, There is an effect that the video information can be easily confirmed even in a remote place.

  A remote camera system according to the present invention includes any one of the camera units described above, and a portable terminal connected to the camera unit via an electric communication line and operating the camera unit. is there. Since this remote camera system has one of the camera units described above, it can store the same effects as the camera unit described above, for example, video information without being limited by the capacity of the storage medium. The video information can be easily confirmed even at a remote place.

  A remote camera system of the present invention includes any one of the camera units described above and an information processing device connected to the camera unit via an electric communication line, and the information processing device is transmitted from the camera unit. Further, the video information may be stored. In this way, the video information transmitted from the camera unit can be stored in the information processing apparatus. For this reason, for example, the video information can be stored without being limited by the capacity of the storage medium, and the video information can be easily confirmed even at a remote place.

  The remote camera system of the present invention includes any one of the above-described camera units, a portable terminal connected to the camera unit via an electric communication line, and operating the camera unit, and the camera unit via an electric communication line. Connected to the information processing device, wherein the information processing device stores the video information transmitted from the camera unit, and the video information and the video information are captured on the portable terminal It may be characterized by transmitting information regarding. By doing so, video information captured by the camera unit can be provided to the portable terminal together with information about the camera unit. In this way, video information captured by a plurality of camera units can be easily confirmed on a portable terminal.

FIG. 1 is a block diagram showing an outline of the configuration of the camera unit 40. FIG. 2 is a block diagram showing electrical connection of the control unit 50. FIG. 3 is a flowchart showing an example of the video information management processing routine.

  Next, the remote camera system 20 will be described in detail as an example of an embodiment of the present invention. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. It can be changed as appropriate. In addition, the same or similar code | symbol is attached | subjected to the corresponding component in each figure. Also, an example of the control method of the camera unit of the present invention will be clarified in describing an example of the video information transmission processing routine.

  The remote camera system 20 is a system in which a camera unit 40 attached to each of a plurality of LED lights 30, a plurality of portable terminals 60, and an information processing device 70 are connected via an electric communication line. In the remote camera system 20, video information captured by the camera unit 40 is transmitted to the information processing device 70 and stored in the information processing device 70. In response to a request from the mobile terminal 60, the information processing apparatus 70 transmits video information to the mobile terminal 60 and information indicating which camera unit 40 has captured this video information to the mobile terminal 60. By doing so, it is possible to easily confirm video information captured by any of the plurality of camera units 40 on the plurality of portable terminals 60. Here, the information indicating which camera unit 40 has captured this video information may be an individual identification number such as a serial number of the camera unit 40 or in an electric communication line such as an IP address. The identification information specified may be sufficient.

  As shown in FIG. 1, the LED illumination 30 is an illumination device having a socket portion 34 to which a straight tube type LED 32 can be attached. The insertion portion 42 of the camera unit 40 is directly connected to the socket portion 34 and the power supply portion 44 is directly connected. Each tube-type LED 32 is attached and used. In this way, power supplied from a power source (not shown) is supplied to the camera unit 40 via the socket unit 34, and at the same time, power is supplied from the power supply unit 44 to the straight tube type LED 32, so that the straight tube type LED 32 is Can be lit. As described above, the insertion portion 42 of the camera unit 40 is attached and electrically connected to the socket portion 34 to which the straight tube type LED 32 is conventionally attached, and the straight tube type LED 32 is attached to the power supply portion 44 with an easy operation. The camera unit 40 can be attached to the LED illumination 30.

  As shown in FIG. 1, the camera unit 40 includes an insertion portion 42 attached to the socket portion 34, a battery 43 that charges and discharges electricity, a power supply portion 44 to which a straight tube LED 32 is attached, and a camera that shoots an object. 46, a microphone 47 that collects ambient sounds, a speaker 48 that emits sound, a communication means 49 that communicates with the outside, and a control unit 50 that controls the movement of each camera unit 40. I have. The camera unit 40 transmits video information captured by the camera 46 to the information processing apparatus 70 via the communication unit 49. By doing so, it is possible to easily confirm the video information photographed by the camera 46 with the information processing apparatus 70 which is a remote place.

  The battery 43 is a storage battery that can be repeatedly charged and discharged. For example, various existing storage batteries such as a lithium ion battery and a nickel / hydrogen storage battery can be used. By doing so, for example, when the straight tube type LED 32 is turned on, power is supplied to the LED illumination 30, and when the straight tube type LED 32 is turned off, power is not supplied to the LED illumination 30, The camera unit 40 can be operated by power from the battery 43. For this reason, it is possible to take a picture with the camera 46 without always supplying power to the LED illumination 30. In addition, since the camera unit 40 can operate even when the external power supply is cut off for some reason, the effect of including the battery 43 is great when used for crime prevention purposes.

  The power supply unit 44 is a member to which the straight tube type LED 32 can be attached, and is screwed with the straight tube type LED 32 to supply power. Since the power supply unit 44 includes a power transformer 44a, when an AC current is supplied from the outside, the power supply unit 44 converts the DC current into a DC current, stabilizes the voltage and the current, and supplies the current to the straight tube LED 32. be able to. By doing so, the straight tube type LED 32 can be operated stably. The power transformer 44a may not be provided. In such a case, when power is supplied to the LED illumination 30, a DC current stabilized in advance may be supplied.

  The camera 46 corresponds to the photographing means of the present invention, and is a known digital video camera capable of photographing a moving image. The video information captured by the camera 46 is transmitted to the information processing apparatus 70 via the telecommunication line by the communication means 49 and stored. At this time, the video information may be transmitted at any time when captured by the camera 46, or may be transmitted after capturing for a certain period of time or a certain volume. If transmission is performed after shooting for a certain period of time or a certain volume, the amount of power consumption can be reduced. The camera 46 may be a digital camera that takes a picture. By doing so, the information amount of the video information can be reduced, and the communication amount when transmitting to the information processing apparatus 70 can be reduced. Note that the video information may include information that can identify the photographed camera 46, such as a serial number or ID. In this way, even when a plurality of camera units 40 are used at the same time, it is possible to easily check which video information has been captured.

  The camera 46 is attached to the camera unit 40 so that the direction of the camera 46 can be adjusted. The camera 46 can be directed in an arbitrary direction, and can start or stop shooting according to a command from the mobile terminal 60 or the information processing device 70. can do. By doing so, it is possible to photograph a wide range compared to the case where the direction of the camera 46 is fixed. At this time, various known methods can be used as a method of attaching the camera 46 in an adjustable manner. For example, you may attach rotatably using a ball joint (ball joint).

  The microphone 47 corresponds to the sound collecting means of the present invention, and a known sound collecting device that acquires sound information can be used. At this time, the microphone 47 can start or stop recording in accordance with a command from the mobile terminal 60 or the information processing device 70. By doing so, since recording can be started or stopped at a desired timing, it is possible to reduce power consumption as compared with the case of recording constantly. Further, as the microphone 47, a microphone having high directivity may be used. By using such a microphone and directing the microphone 47 in the same direction as the shooting direction of the camera 46, only the sound in the direction in which the camera 46 is shooting can be selectively recorded. By doing so, it is possible to obtain more detailed information regarding the situation of the scene being photographed by the camera 46.

  The speaker 48 corresponds to the sound emitting means of the present invention, and a known speaker can be used. At this time, the speaker 48 can emit an arbitrary sound according to a command from the portable terminal 60 or the information processing device 70. In this way, not only the information obtained from the camera 46 or the microphone 47 is transmitted to the portable terminal 60 or the information processing apparatus 70, but also the sound is emitted from the portable terminal 60 or the information processing apparatus 70 via the speaker 48. Can do. By doing so, the video information can be confirmed by the portable terminal 60 or the information processing apparatus 70, and sound can be emitted from the speaker 48 as necessary. At this time, the sound emitted from the speaker 48 may be a sound that is stored in advance in the control unit 50 to be described later and is emitted by a command signal from the portable terminal 60 or the information processing device 70, or may be portable. The sound data transmitted from the terminal 60 or the information processing apparatus 70 may be emitted. By storing audio data in the control unit 50 in advance, the amount of communication with the mobile terminal 60 or the information processing device 70 can be reduced, and by transmitting audio data from the mobile terminal 60 or the information processing device 70, Arbitrary audio data can be reproduced.

  The communication unit 49 is a known wireless communication unit that can communicate with the mobile terminal 60 or the information processing apparatus 70. For example, a wireless communication unit such as a Wi-Fi standard or a WiMAX standard can be used. Video information is transmitted from the camera unit 40 to the portable terminal 60 or the information processing apparatus 70 via the communication means 49 and the electric communication line, and operation command signals, audio information, etc. are received from the portable terminal 60 or the information processing apparatus 70. can do.

  As shown in FIG. 2, the control unit 50 is a microcomputer centered on the CPU 51, and includes a ROM 52 that stores a video information transmission processing routine (to be described later), various control programs for controlling the movement of the camera unit 40, and the like. An interface 56 (hereinafter referred to as “I / F 56”) for controlling communication with various devices such as a camera 46, a microphone 47, and a speaker 48, video information and the like. Storage means 58 capable of storing a large amount of information, and each is electrically connected by a bus 59. Various devices such as the camera 46, the microphone 47, and the speaker 48 can be controlled by the control unit 50, and the camera unit 40 can be operated in accordance with a command signal from the portable terminal 60 or the information processing apparatus 70. . The control unit 50 may use an IC chip or the like that can perform the same control. By doing so, the camera unit 40 can be further reduced in size and weight.

  As the storage means 58, various known storage means capable of storing information can be used. The storage means may be, for example, a volatile memory such as a DRAM or a non-volatile memory such as a magnetic storage device. Since the camera unit 40 includes the battery 43, video information can be stored by supplying power from the battery 43 even when a volatile memory is used. For example, when using as a security camera, it is more preferable to use a non-volatile memory. By doing so, video information can be stored even after the power of the battery 43 is completely discharged. At this time, as the nonvolatile memory, a large-capacity storage unit such as a hard disk drive or a magnetic disk may be used, or various memory cards such as a USB memory or an SD card may be used. By using various memory cards or the like, the storage means 58 can be easily collected, and even if a part of the camera unit 40 (for example, the communication means 49 or the battery 43) does not operate for some reason. Video information can be obtained.

  Next, a method for transmitting the video information stored in the storage unit 58 will be described in detail with reference to FIG. Here, FIG. 3 is a flowchart showing an example of the video information transmission processing routine. This video information transmission processing routine is repeatedly executed when the video information photographed by the camera 46 is stored in the storage means 58. When the video information photographed by the camera 46 is stored in the storage unit 58, the CPU 51 calculates the remaining capacity that can be stored in the storage unit 58 (step S110), and whether or not the remaining capacity is equal to or greater than a threshold value. Is determined (step S120). Here, the threshold value is an arbitrary value not less than zero and not more than the capacity of the storage means 58.

  In step S120, when the CPU 51 determines that the remaining capacity is equal to or greater than the threshold value, this routine ends. In such a case, since the storage unit 58 has a capacity for storing video information, the video information can be continuously stored.

  On the other hand, when the CPU 51 determines that the remaining capacity is less than the threshold value in step S120, the video information stored in the storage unit 58 is transmitted to the information processing apparatus 70 (step S130), and the storage unit 58 is notified. The stored video information is erased (step S140), and this routine is terminated. As described above, the video information stored in the storage means 58 is deleted after being transmitted to the information processing apparatus 70, whereby infinite video information can be stored using the finite storage means 58.

  As described in detail above, the camera unit 40 can be easily attached by inserting the insertion part 42 of the camera unit 40 into the socket part 34 of the LED illumination 30 and attaching the straight tube type LED 32 to the power supply part 44. The camera unit 40 can change the direction of the camera 46 based on an operation command signal from the portable terminal 60 or the information processing device 70, and can transmit video information captured by the camera 46 to the information processing device 70. Therefore, a desired direction can be photographed at a desired timing, and the photographed information can be easily confirmed by the mobile terminal 60 or the information processing apparatus 70 which are remote locations.

  Further, since the camera unit 40 is provided with the storage means 58, it is possible to store video information taken by the camera 46. At this time, after the video information is temporarily stored in the storage unit 58, the video information is transmitted via the communication unit 49, so that the communication unit 49 may not always communicate. This contributes to power saving.

  Further, when the information amount of the video information stored in the storage means 58 is equal to or greater than a predetermined threshold, the video information is transmitted to the information processing device 70 (step S120), and the video information is deleted (step S130). Therefore, video information can be stored for a long time, and the video information can be confirmed even at a remote place where the information processing apparatus 70 is provided.

  Furthermore, since the camera unit 40 is provided with the microphone 47, in addition to the video information captured by the camera 46, audio information recorded by the microphone 47 can be obtained.

  And since the camera unit 40 is provided with the speaker 48, it can emit a sound based on the command signal from the portable terminal 60 or the information processing apparatus 70. In this way, for example, when an abnormality occurs near the camera unit 40, a warning sound can be emitted.

  Further, since the camera unit 40 is provided with the battery 43, the camera unit 40 can be operated by the power of the battery 43 even when the camera unit 40 is not supplied with power from the outside. By doing so, the camera unit 40 can be operated without supplying power from the outside when it is not necessary to turn on the straight tube type LED 32 such as in the daytime.

  In addition, this invention is not limited to embodiment mentioned above at all, and as long as it belongs to the technical scope of this invention, it cannot be overemphasized that it can implement with a various aspect.

  For example, in the above-described embodiment, power is supplied from the power supply unit 44 to the straight tube LED 32. At this time, the control unit 50 turns on or off the power supply to the straight tube LED 32. May be. In this way, even when external power is always supplied to the LED illumination 30, the straight tube LED 32 can be turned on or off, which contributes to power saving. In addition, by turning on or off the power supply to the straight tube type LED 32 based on the ON signal or the OFF signal from the portable terminal 60 or the information processing device 70, the straight tube type LED 32 is turned off or off. Can be controlled from the place.

  At this time, the control unit 50 may intermittently supply power to the power supply unit 44 to cause the straight tube type LED 32 to blink, or to control a current amount to the straight tube type LED 32 to a specific color. You may make it shine in (for example, red). In this way, it is possible to notify the outside of the abnormality by lighting the straight tube LED 32 in a state different from the normal state. Such control may be executed based on a command signal from the portable terminal 60 or the information processing device 70, but is executed by the COU 51 based on audio information recorded by the microphone 47 or video information photographed by the camera 46. It may be done. For example, it may be executed when sound information includes a sound with a specific frequency or higher that is likely to be a female scream, or may be executed based on signals from an infrared camera or various sensors. Good. By doing so, it is more effective when used as a security camera.

  In the above-described embodiment, the microphone 47 is provided. However, when the camera 46 having a recording function is used, the microphone 47 may not be provided. Also in this case, the same effect as the above-described embodiment can be obtained. Further, the microphone 47 may not be provided.

  In the embodiment described above, the speaker 48 is provided, but the speaker 48 may not be provided.

  In the embodiment described above, the storage unit 58 is provided, but the storage unit 58 may not be provided. In such a case, information taken by the camera 46 may be temporarily stored in the RAM 54 or may be transmitted to the information processing device 70 via the sequential communication means 49. By doing so, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiment, the video information captured by the camera 46 is transmitted to the information processing apparatus 70, but may be transmitted to the portable terminal 60. Even in this case, the same effect as the above-described embodiment can be obtained.

  In the embodiment described above, the battery 43 is provided, but the battery 43 may not be provided. Even in this case, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiment, the straight tube LED 32 is turned on or off according to a command from the mobile terminal 60, but it may be controlled to be turned on or off according to a predetermined condition. Here, the predetermined condition is, for example, provided with a sensor such as an infrared sensor, and may be turned on or off based on a signal from the sensor, or provided with timing means such as a timer, based on a predetermined time. May be turned ON or OFF. In any case, the same effect as the above-described embodiment can be obtained.

  In the embodiment described above, the communication unit 49 is a wireless communication unit, but may be a communication unit such as a wired LAN. Even in this case, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiment, an arbitrary sound is emitted in response to a command from the mobile terminal 60 or the information processing device 70. However, when sound is emitted, video information captured by the camera 46, A sound may be emitted based on the sound information recorded by the microphone 47. In this way, when used as a security camera, the security effect can be enhanced. Specifically, for example, a specific face is emitted when sound information of a specific volume or higher is recorded by the microphone 47, or a human face is extracted from the video information photographed by the camera 46 by face recognition processing. In this case, a specific sound may be emitted, or sound may be emitted based on a combination of audio information recorded by the microphone 47 and video information captured by the camera 46. By so doing, it is possible to give an impression as if being constantly monitored by the remote camera system 20, so that a higher crime prevention effect can be obtained.

  In the above-described embodiment, when the CPU 51 determines that a sound of a specific volume or higher has been recorded by the microphone 47, the camera 46 may be activated to start shooting. By doing so, since shooting is performed by the camera 46 when some abnormality occurs, it contributes to power saving as compared with the case of always shooting.

  As shown in the above-described embodiment, the present invention can be used particularly as a security camera as a photographing apparatus that can view photographed information at other places.

20 ... Remote camera system, 30 ... LED lighting, 32 ... Straight tube type LED, 34 ... Socket part,
40 ... Camera unit, 42 ... Insertion unit, 43 ... Battery, 44 ... Power supply unit,
44a ... power transformer, 46 ... camera, 47 ... microphone, 48 ... speaker,
49 ... Communication means, 50 ... Control unit, 51 ... CPU, 52 ... ROM, 54 ... RAM,
56 ... interface, 58 ... storage means, 59 ... bus,
60 ... mobile terminal, 70 ... information processing apparatus.

Claims (11)

It is a camera unit for LED lighting that uses a straight tube type LED attached to a socket part,
An attachment part attached to the socket part;
A power supply unit that attaches the straight tube type LED and supplies power to the straight tube type LED; and
Photographing means capable of changing the direction of a lens for photographing an object based on an external signal;
Communication means for transmitting video information including video captured by the imaging means and receiving a change command signal for changing the direction of the lens;
Control means for controlling the photographing means based on the change command signal;
Characterized by comprising
Camera unit. The camera unit according to claim 1,
Storage means for storing the video information;
With
The control means transmits the video information stored in the storage means to the outside using the communication means at a predetermined timing.
Camera unit. The control means deletes the video information from the storage means after transmitting the video information by the communication means when the storage capacity storable in the storage means becomes a predetermined value or less. And
The camera unit according to claim 2. The control means controls the power supplied to the straight tube type LED from the power supply unit to ON or OFF,
The camera unit according to claim 1. The camera unit according to any one of claims 1 to 4,
A sound collecting means for collecting sounds;
Characterized by comprising
Camera unit. The camera unit according to any one of claims 1 to 5,
Sound emission means for emitting sound;
With
The communication means receives voice data emitted by the sound emission means,
Camera unit. The camera unit according to any one of claims 1 to 6,
A power saving means for saving power;
Characterized by comprising,
Camera unit. The camera unit according to any one of claims 1 to 7, attached to the socket part,
The straight tube type LED attached to the attachment part;
Characterized by comprising
LED lighting. The camera unit according to any one of claims 1 to 7,
A portable terminal connected to the camera unit via an electrical communication line and operating the camera unit;
Remote camera system equipped with. The camera unit according to any one of claims 1 to 7,
An information processing apparatus connected to the camera unit via an electric communication line;
With
The information processing apparatus stores the video information transmitted from the camera unit.
Remote camera system. A plurality of camera units according to any one of claims 1 to 7,
A portable terminal connected to the camera unit via an electrical communication line and operating the camera unit;
An information processing apparatus connected to the camera unit via an electric communication line;
With
The information processing apparatus stores the video information transmitted from the camera unit, and transmits the video information and information regarding the camera unit in which the video information is captured to the portable terminal.
Remote camera system.

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