JP2004088242A - Camera device and image transmitting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera device and its control method for efficiently performing retransmission when image transmission is failed. <P>SOLUTION: When transmission of a picked up image to a prescribed remote device is failed (NO: S109), if there is a time to spare more than a described time (M) until a next scheduled imaging, the retransmission of the image is performed after a prescribed time (N) (S111, S107), and the retransmission is not performed if there is no time to spare more than the described time (M) until the next scheduled imaging. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a camera device and an image transmission method for a remote monitoring system or the like.
[0002]
[Prior art]
A camera device used in a remote monitoring system, such as a building surveillance camera, that captures images at regular intervals or triggers signals from various sensors and sends the captured images to a remote device (remote device). Many things to transfer have been proposed.
[0003]
FIG. 7 is a diagram illustrating a configuration example of a conventional remote monitoring system. The conventional remote monitoring system transmits an image captured by the camera device (702) via a communication network (701) such as a public communication network. The transmission destination includes a server (703), a personal computer (704), and a mobile phone (706) via a base station (705) for mobile communication. The photographing operation and the transmission operation in the camera device (702) are performed by setting values and sensor inputs preset in the camera device, and by requests from the server (703), the personal computer (704), the mobile phone (706), and the like.
[0004]
In such a remote monitoring system, for example, when an image photographed at regular intervals is transmitted to a remote device using a public communication network, for example, the image is transmitted as an attached file of an e-mail by SMTP, or And uploading to a server as a remote device using FTP.
[0005]
By the way, when the camera device performs a dial-up connection to transmit an image, for example, the line is congested, the connection is not established, and the captured image may not be transmitted. Also, when sending image data to a server, there is a possibility that the data cannot be transmitted because the server is not operating in the first place. Further, when a public wireless network is used, photographed image data may not be able to be transmitted due to poor communication quality. If transmission fails for these reasons, the image will be retransmitted later.
[0006]
This retransmission technique is disclosed in, for example, JP-A-8-256325 and JP-A-2001-77939.
[0007]
First, Japanese Patent Application Laid-Open No. 8-256325 discloses a system for acquiring an image by a remote camera device using a public communication network, and discloses that if transmission of image data fails, retransmission is performed after a certain period of time. ing.
[0008]
Japanese Patent Application Laid-Open No. 2001-77939 discloses a wireless communication method in which transmission of image data fails because the transfer destination is out of the range of wireless communication, or transmission of image data fails due to deterioration of communication quality. It discloses resending the mail when communication becomes possible.
[0009]
[Problems to be solved by the invention]
However, the surveillance camera device can generally be set to automatically transfer images at regular time intervals. In such a setting state, as described above, simply retransmitting the image after a certain period of time when the image transmission fails, or simply retransmitting when the communication quality is restored, for example, the image Immediately before or immediately after the connection / disconnection of the line for automatic transfer of the image, there may be a case where the connection / disconnection of the line is further performed for retransmission of the image whose transmission has failed. In this case, a delay is caused in image transmission, and a communication fee is increased due to frequent line connection.
[0010]
The present invention has been made to address such a problem, and has as its object to provide a camera device and a control method thereof that can efficiently perform retransmission when image transmission fails. I do.
[0011]
[Means for Solving the Problems]
One aspect of the present invention relates to a camera device that transmits an image obtained by shooting to a predetermined remote device. The camera device includes a preset photographing schedule, a photographing control unit configured to control photographing according to a response of the sensor, and a determining unit configured to determine whether transmission to the remote device is successful. And transmission control means for controlling, when transmission to the remote device fails, the retransmission of the image in accordance with the time until the next shooting schedule.
[0012]
Another aspect of the present invention relates to a method of transmitting an image obtained by shooting to a predetermined remote device. The method includes a preset photographing schedule, a photographing control step of controlling a camera to perform photographing according to a response of a sensor, and a determining step of determining whether transmission to the remote device is successful. A transmission control step of, when transmission to the remote device fails, controlling to retransmit the image according to the time until the next photographing schedule.
[0013]
Still another aspect of the present invention relates to a program for controlling a camera device that transmits an image obtained by shooting to a predetermined remote device. The program includes a shooting schedule set in advance, a shooting control step of controlling shooting to be performed according to a reaction of the sensor, a determining step of determining whether transmission to the remote device has been successful, When the transmission to the apparatus fails, a transmission control step of controlling the image to be retransmitted is executed according to the time until the next photographing schedule.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
(Embodiment 1)
FIG. 8 is a diagram illustrating a network configuration including the camera device according to the embodiment.
[0016]
For example, the camera device 5 captures an image for monitoring purposes, and the camera device 5 uses, for example, a point-to-point protocol (PPP) to an ISP (Internet Service Provider) 10 via a public switched telephone network (PSTN) 50 in order to transfer the image to a remote device. Make a dial-up connection. Specifically, the ISP 10 includes a dial-up server 11 for providing a dial-up connection, a file server 12 for storing various data files, a mail server 13 for delivering an e-mail in accordance with SMTP (Simple Mail Transfer Protocol), and the Internet. It includes a gateway 14 that relays with other network organizations.
[0017]
A client PC 15 connected to the PSTN 50 functions as a mail client of the mail server 13. The mobile phone 20 also has an image display function and functions as a mail client of the mail server 13. The mobile phone 20 establishes a wireless link with a base station (BS) 23 and is further connected to the PSTN 50 via a mobile switching center (MSC) 23 and a gateway mobile switching center 21.
[0018]
The camera device 5 can be connected to the ISP 10 through a dial-up connection, and can transfer the photographed image to the client PC 15 or the mobile phone 20 as an attached file of an e-mail using the mail server 13, or by using FTP (File Transfer Protocol). It can also be transferred to the file server 12. The client PC 15 and the mobile phone 20 can access the file server 12 and browse images stored therein. That is, each of the client PC 15 and the mobile phone 20 functions as a remote device for monitoring the camera device 5.
[0019]
FIG. 6 is a block diagram illustrating a configuration of the camera device 5. The camera device 5 may shoot a still image or a moving image. Here, it is assumed that the camera device 5 shoots a still image, for example.
[0020]
As shown in the figure, the camera device 5 includes a camera 601 that captures an image, a camera controller 602 that controls the camera 601, a communication unit 603 that performs communication via the PSTN 50 to transmit the captured image, In addition to a microphone 604 for picking up sound, a sensor unit 605 for detecting a change or an abnormality in a shooting target or environment, an image storage unit 606 for storing a shot image, a system control unit 607 for controlling the entire system, and a shooting time interval And a timer 608 for measuring a moving image shooting time, and a memory 609 for storing various setting contents including a transmission destination address of a shot image.
[0021]
The sensor unit 605 includes, for example, a window sensor that detects that a window has opened, a moving object sensor that detects that an object has crossed, a sound sensor that detects sound, and an optical sensor that detects light. Detect changes and abnormalities in the environment.
[0022]
Subsequently, an outline of the operation of the camera device 5 will be described.
[0023]
The system control unit 607 causes the photographing to be performed according to a preset photographing schedule, and also causes the sensor unit 605 to perform the photographing in response to detecting a change or abnormality in the photographing target or environment. Specifically, for example, a shooting schedule is set such that the next shooting is started when a predetermined time L has elapsed from the previous shooting, and the system control unit 607 controls the shooting timing according to this shooting schedule. Further, the system control unit 607 causes the photographing to be performed in response to the fact that one of the sensors of the sensor unit 605 has detected an abnormality. That is, the camera device 5 can start shooting with the detection signal from the sensor unit 605 as a trigger.
[0024]
The system control unit 607 issues a photographing request to the camera controller 602 in response to the lapse of the predetermined time L from the previous photographing as described above or a detection signal from the sensor unit 605, thereby photographing the camera unit 601. Let it do. In addition, the system control unit 607 issues a transmission request to the communication unit 606 each time an image is captured, thereby transmitting the captured image. In the following description, these photographing requests and transmission requests are collectively referred to as photographing / transmission requests.
[0025]
The memory 609 stores, as a set value, the time length L when the next shooting is performed after a predetermined time L has elapsed from the previous shooting. The memory 609 stores, for each image, the reason for shooting (whether the detection signal from the sensor unit 605 is a trigger or whether a predetermined time L has elapsed since the previous shooting) and the transmission result (success / Failure information, additional information such as destination information (e-mail address, IP address, login name, etc.) and transmission method (e-mail transmission by SMTP / file transfer by FTP) are also stored as setting values. These setting values can be changed based on an input from an operation panel (not shown).
[0026]
The camera device 5 connects the image data to the PSTN 50 (hereinafter simply referred to as “line”) using the communication unit 603 and transmits the image data, and disconnects the line after the image data transmission is completed. If the transmission of the image data is successful, the data transmission ends, and the next photographing request is waited.
[0027]
On the other hand, if there is a possibility that image data transmission will succeed over time, such as when the image data transmission fails, the destination is busy or the power is turned off, etc. Later, retry transmission.
[0028]
Hereinafter, the operation of the camera device 5 in the present embodiment will be described in detail with reference to the flowchart of FIG.
[0029]
This processing is performed by a request to shoot / transmit an image output by the system control unit 607 in response to a detection signal from the sensor unit 605, or after a lapse of a predetermined time L (for example, one hour) from the end of the previous shooting (the timer unit 608). The process starts with a request to capture / transmit an image to be transmitted (step S101).
[0030]
In step S102, before photographing, it is determined whether or not the AC power supplied to the camera device 5 or the power supply capacity of the battery remains as necessary for photographing. Here, if there is not enough power supply capacity remaining for shooting, the process proceeds to step S106, and the process is abnormally terminated. On the other hand, if there is enough power to be captured, the process proceeds to step S103, where an image is captured using the camera unit 601 and the captured image is stored in the image storage unit 606.
[0031]
In step S104, it is determined whether there is sufficient power supply capacity to transmit an image to a preset destination. Here, if there is no remaining power supply capacity that can be transmitted, the process proceeds to step S106, and the process ends abnormally. On the other hand, if there is enough power to be transmitted, a line is connected according to the settings (step S105), image data is transmitted (step S107), and then the line is disconnected (step S108).
[0032]
Next, in step S109, it is determined whether the transmission of the image data in step S107 is successful. If the transmission is successful, the process proceeds to step S112, where the transmission result (transmission success / failure) is stored in the memory 609, the transmission of the image data is completed (step S113), and the process returns to step S101 to capture the next image. Wait for a transmission request.
[0033]
On the other hand, in step S109, the transmission of the image data in step S107 indicates that the data link with the wireless base station has been established because the connection destination is busy or the power is off. If the data transmission fails due to no call being made, the process proceeds to step S110, and a predetermined time M (for example, a predetermined time L has elapsed from the end of the imaging in step S103 after the end of the imaging in step S103). 10 minutes) or more. If the time is equal to or longer than M, the process proceeds to step S111, and waits for a predetermined time N (for example, three minutes). Thereafter, the process returns to step S104 and attempts retransmission while checking the remaining battery level. The reason for waiting for the predetermined time N in step S111 is that if the cause of the image transmission failure is that the transmission destination is busy or the power is turned off, etc. This is because it is considered that there is a possibility that the busy state is canceled in the meantime or the power of the transmission destination is turned on and the transmission of the image data is successful. Here, a relationship of L>M> N is established among the times L, M, and N. As long as this condition is satisfied, each value of L, M, and N may be configured so that the user can specify it.
[0034]
On the other hand, if the time until the next shooting schedule is less than M in step S111, the process proceeds to step S112 without performing retransmission, and prepares for a shooting / transmission request for the next image.
[0035]
As described above, according to the present embodiment, retransmission of an image for which transmission has failed is performed only when there is a margin for a predetermined time (M) or more before the next imaging schedule, and the predetermined image is not transmitted until the next imaging schedule. Since retransmission is not performed when there is no allowance for time (M) or more, efficiency of retransmission can be improved.
[0036]
In the above example, if there is not enough time before the next shooting schedule, the image that failed to be transmitted is not retransmitted, but is not retransmitted uniformly but is retransmitted at a timing according to the importance of the image. You can also do so. An example of such control processing related to retransmission will be described with reference to the flowchart in FIG.
[0037]
This processing is performed for a request to shoot / transmit an image output in response to a detection signal from the sensor unit 605 or an image to be transmitted after a predetermined time L has elapsed from the end of the previous shooting (timed by the timer unit 608). The process is started by a photographing / transmission request (step S201).
[0038]
In step S202, the image is photographed, and the photographed image is stored in the image storage unit 606. In step S203, it is determined whether there is an untransmitted image that has failed to be transmitted at the present time. As described above, the transmission result (transmission success / failure) is recorded for each captured image in the memory 609, so that it can be determined by referring to this whether or not there is an image for which transmission failed. it can. The presence of an untransmitted image means that, when transmission to the remote device has failed, the image was not retransmitted because the time until the next shooting schedule was less than the predetermined time M. (See step S110 in FIG. 1).
[0039]
Here, when there is an untransmitted image, the process proceeds to step S204, and when there is no untransmitted image, the process proceeds to step S206. In step S204, it is recorded in the memory 609 whether the untransmitted image was captured using the detection signal from the sensor unit 605 as a trigger or captured after a predetermined time L has elapsed since the previous capturing. It is determined based on the attached information of the unsent image. If the untransmitted image is captured using the detection signal from the sensor unit 605 as a trigger, it is considered to be a very important image, which is nothing other than the image captured due to an abnormality in the imaging target. Conceivable. Therefore, in this case, the process proceeds to step S205, and a setting is made to transmit both the untransmitted image and the latest image captured in step S202.
[0040]
On the other hand, if the untransmitted image has been captured after the lapse of the predetermined time L from the previous capturing, the importance of the untransmitted image is considered to be not so high. In this case, step S206 is performed. Then, the setting is made so that only the latest image captured in step S202 is transmitted.
[0041]
Then, in step S207, the image according to the setting in step S205 or S206 is transmitted to a preset destination by a preset transmission method (e-mail / FTP).
[0042]
Then, in step S208, the image data transmission processing is completed, and the process returns to step S201, where the apparatus enters a standby state until there is a request to shoot / transmit the next image.
[0043]
In this way, when transmission of a particularly important image fails, the image is transmitted together with a new image by the next shooting, and when transmission of a non-important image fails, the image is transmitted. Since transmission is not intentionally performed, it is possible to improve the efficiency of retransmission while ensuring monitoring performance in a remote place.
[0044]
(Embodiment 2)
Here, when the camera device 5 is configured to connect to the PSTN 50 using wireless communication in the same manner as the mobile phone 20, when the image data transmission fails due to the deterioration of the wireless communication quality, The transmission process will be described.
[0045]
Hereinafter, the operation of the camera device 5 according to the present embodiment will be described with reference to the flowchart of FIG.
[0046]
This processing is performed by a request for photographing / transmission of an image output by the system control unit 607 in response to a detection signal from the sensor unit 605, or after a predetermined time L has elapsed from the end of the previous photographing (timed by the timer unit 608). (Step S301).
[0047]
In step S302, before photographing, it is determined whether the AC power supplied to the camera device 5 or the power supply capacity of the battery remains as necessary for photographing. Here, if there is not enough power supply capacity to allow shooting, the process proceeds to step S306, and the process ends abnormally. On the other hand, if there is enough power to be captured, the process advances to step S303 to capture an image using the camera unit 601 and store the captured image in the image storage unit 606.
[0048]
In step S304, it is determined whether there is sufficient power supply capacity to transmit an image to a preset destination. Here, if there is no remaining power supply capacity that can be transmitted, the process proceeds to step S306, and the process ends abnormally. On the other hand, if the power supply capacity that can be transmitted remains, the line is connected according to the set contents (step S305), the image data is transmitted (step S307), and then the line is disconnected (step S308).
[0049]
Next, in step S309, it is determined whether the transmission of the image data in step S307 is successful. If the transmission is successful, the process proceeds to step S312, where the transmission result (transmission success / failure) is stored in the memory 609, the transmission of the image data is completed (step S313), and the process returns to step S301 to capture the next image. Wait for a transmission request.
[0050]
On the other hand, in step S309, the transmission of the image data in step S307 is caused by a deterioration in wireless communication quality, such as a failure in receiving a broadcast signal from the wireless base station or a failure in establishing a data link with the wireless base station. If the data transmission has failed, the process proceeds to step S310, and it is determined whether or not there is a predetermined time M or more before the next shooting schedule (after a predetermined time L has elapsed from the end of shooting in step S303).
[0051]
Here, if the time is equal to or longer than M, the process proceeds to step S311 to determine whether or not the radio communication quality has been restored to a level sufficient for performing data communication. Whether the wireless communication quality is sufficient is determined by, for example, whether the communication unit 603 has the electric field strength equal to or higher than the threshold or the bit error rate equal to or higher than the threshold. If it is determined that the communication quality is insufficient, the process returns to step S310 and repeats the process. On the other hand, if it is determined that the communication quality is sufficient, the process returns to step S304, and retransmission is attempted.
[0052]
On the other hand, if it is determined in step S310 that the time until the next image shooting / transmission request is performed is less than M, the process proceeds to step S312 without performing retransmission, and prepares for the next image shooting / transmission request.
[0053]
As described above, according to the present embodiment, when image data transmission fails due to deterioration in wireless communication quality, the wireless communication quality recovers as long as there is enough time until the next shooting schedule. Retransmission is performed as soon as transmission is possible, and retransmission is not performed if there is not enough time until the next shooting schedule, so that retransmission efficiency can be improved. .
[0054]
(Embodiment 3)
Here, a description will be given of a case where the transmission of the image data fails due to the power of the remote device (for example, the file server 12) being turned off or the destination (IP address) of the remote device being wrong.
[0055]
Hereinafter, the operation of the camera device 5 according to the present embodiment will be described with reference to the flowchart of FIG.
[0056]
This processing is performed by a request for photographing / transmission of an image output by the system control unit 607 in response to a detection signal from the sensor unit 605, or after a predetermined time L has elapsed from the end of the previous photographing (timed by the timer unit 608). (Step S401).
[0057]
In step S402, before photographing, it is determined whether the AC power supplied to the camera device 5 or the power supply capacity of the battery remains as necessary for photographing. Here, if there is no remaining power supply capacity for taking a picture, the process proceeds to step S406, and the process ends abnormally. On the other hand, if there is enough power to be captured, the process advances to step S403 to capture an image using the camera unit 601 and store the captured image in the image storage unit 606.
[0058]
In step S404, it is determined whether there is sufficient power supply capacity for transmitting an image to a preset destination. Here, if there is no remaining power supply capacity that can be transmitted, the process proceeds to step S406, and the process ends abnormally. On the other hand, if there is enough power supply capacity to transmit, the line is connected according to the settings (step S405), the image data is transmitted (step S407), and then the line is disconnected (step S408).
[0059]
Next, in step S409, it is determined whether the transmission of the image data in step S407 is successful. If the transmission is successful, the process proceeds to step S414, the transmission result (transmission success / failure) is stored in the memory 609, the transmission of the image data is completed (step S414), and the process returns to step S401 to capture the next image. Wait for a transmission request.
[0060]
On the other hand, if the transmission of the image data in step S407 has failed in step S409, the process advances to step S410 to search for another accessible server. If there is another accessible server, the process proceeds to step S411, the server is changed to the destination, and the process returns to step S404 to perform data transmission. If no accessible server is found, the process proceeds to step S412.
[0061]
In step S412, it is determined whether or not there is a predetermined time M or more before the next shooting schedule (after a predetermined time L has elapsed from the end of shooting in step S403). If the time is equal to or longer than M, the process proceeds to step S413 and waits for a predetermined time N, and then returns to step S404 to attempt retransmission. Here, a relationship of L>M> N is established among the times L, M, and N. As long as this condition is satisfied, each value of L, M, and N may be configured so that the user can specify it.
[0062]
On the other hand, if it is determined in step S412 that the time until the request to shoot / transmit the next image is less than M, the process proceeds to step S414 without performing retransmission and prepares for the request to shoot / transmit the next image.
[0063]
Note that the order of the above-described determination processing in step S410 and the determination processing in step S412 may be reversed.
[0064]
As described above, according to the present embodiment, when the transmission destination cannot be found due to the power of the remote device being turned off or the like, another accessible server is searched, and the image data is stored in the found server. Is retransmitted.
[0065]
(Embodiment 4)
Here, a description will be given of a case in which the connection to the remote device is established, but the setting value for authentication is incorrect, so that the remote device cannot be negotiated and image data transmission fails.
[0066]
Hereinafter, the operation of the camera device 5 in the present embodiment will be described with reference to the flowchart of FIG.
[0067]
This processing is performed by a request for photographing / transmission of an image output by the system control unit 607 in response to a detection signal from the sensor unit 605, or after a predetermined time L has elapsed from the end of the previous photographing (timed by the timer unit 608). (Step S501).
[0068]
In step S502, before shooting, it is determined whether the AC power supplied to the camera device 5 or the power capacity of the battery remains as necessary for shooting. Here, if there is not enough power supply capacity to allow shooting, the process proceeds to step S506, and the process ends abnormally. On the other hand, if there is enough power to be captured, the process advances to step S503 to capture an image using the camera unit 601 and store the captured image in the image storage unit 606.
[0069]
In step S504, it is determined whether there is sufficient power supply capacity for transmitting an image to a preset destination. Here, if there is no remaining power supply capacity that can be transmitted, the process proceeds to step S506, and the process ends abnormally. On the other hand, if there is enough power supply capacity to transmit, the line is connected according to the settings (step S505), the image data is transmitted (step S507), and then the line is disconnected (step S508).
[0070]
Next, in step S509, it is determined whether the transmission of the image data in step S507 is successful. If the transmission is successful, the process proceeds to step S516, the transmission result (transmission success / failure) is stored in the memory 609, the transmission of the image data is completed (step S517), and the process returns to step S501 to capture the next image. Wait for a transmission request.
[0071]
On the other hand, when it is determined in step S509 that the transmission of the image data in step S507 has failed because the connection with the remote device was rejected in the authentication stage due to, for example, an incorrect setting value for authentication. Proceeds to step S510, and searches for any other set values for authentication (authentication data). If there is another set value for authentication, the process advances to step S511 to change the set value and try authentication to the remote device. When the authentication is successful and the connection is established, the process returns to step S504 to transmit an image.
[0072]
If no other set value for authentication is found in step S510, the process proceeds to step S512. In step S512, it is determined whether or not there is a predetermined time M or more before the next shooting schedule (after a predetermined time L has elapsed from the end of shooting in step S503). If the time is equal to or longer than M, the process proceeds to step S513, waits for a predetermined time N, and then returns to step S504 to attempt retransmission. Here, a relationship of L>M> N is established among the times L, M, and N. As long as this condition is satisfied, each value of L, M, and N may be configured so that the user can specify it.
[0073]
On the other hand, if it is determined in step S512 that the time until the next image capturing / transmission request is less than M, the process proceeds to step S514 without performing retransmission, and the transmission result (transmission success / failure) is stored in the memory 609. After the saving, in step S515, the process ends as an abnormal end of data transmission.
[0074]
As described above, according to the present embodiment, if authentication to the remote device fails, if there is other authentication data, retransmission can be attempted using the authentication data.
[0075]
(Other embodiments)
As described above, the embodiments of the present invention have been described in detail. However, the configuration of the surveillance camera device described above may be a device including one device or a plurality of devices (for example, an imaging device and an image processing device). It may be a system configuration.
[0076]
According to the present invention, a software program (a program corresponding to any one of the flowcharts in FIGS. 1 to 5) for realizing the functions of the above-described embodiments is directly or remotely supplied to a system or an apparatus. The present invention also includes a case where the present invention is also achieved by a computer reading and executing the supplied program.
[0077]
Therefore, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. That is, the claims of the present invention also include the computer program itself for implementing the functional processing of the present invention.
[0078]
In this case, any form of the program, such as an object code, a program executed by an interpreter, and script data supplied to the OS, is applicable as long as the program has the function of the program.
[0079]
Examples of the storage medium for supplying the program include a flexible disk, an optical disk (CD-ROM, CD-R, CD-RW, DVD, etc.), a magneto-optical disk, a magnetic tape, a memory card, and the like.
[0080]
In addition, the method of supplying the program includes a mode in which the program of the present invention is obtained by file transfer via the Internet.
[0081]
Further, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM and distributed to users, and a user who clears predetermined conditions is caused to obtain key information for decrypting via the Internet, It is also possible to execute the encrypted program by using the key information and install the program on a computer to realize the program.
[0082]
The functions of the above-described embodiments are implemented when the computer executes the read program, and the OS or the like running on the computer executes a part or a part of the actual processing based on the instructions of the program. The entire process is performed, and the functions of the above-described embodiment can be realized by the processing.
[0083]
Furthermore, after the program read from the storage medium is written into the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion board or the The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the processing also realizes the functions of the above-described embodiments.
[0084]
【The invention's effect】
According to the present invention, it is possible to provide a camera device and a control method thereof that can efficiently perform retransmission when image transmission fails.
[Brief description of the drawings]
FIG. 1 is a flowchart illustrating an operation of a camera device according to a first embodiment.
FIG. 2 is a flowchart illustrating retransmission processing of an untransmitted image by the camera device according to the embodiment.
FIG. 3 is a flowchart illustrating an operation of the camera device according to the second embodiment.
FIG. 4 is a flowchart illustrating an operation of a camera device according to a third embodiment.
FIG. 5 is a flowchart illustrating an operation of a camera device according to a fourth embodiment.
FIG. 6 is a diagram illustrating a configuration of a camera device according to the embodiment.
FIG. 7 is a diagram illustrating a configuration example of a conventional remote monitoring system.
FIG. 8 is a diagram illustrating a network configuration including a camera device according to the embodiment.

Claims (8)

A camera device for transmitting an image obtained by shooting to a predetermined remote device,
A photographing control means for controlling photographing according to a preset photographing schedule and a sensor response;
Determining means for determining whether the transmission to the remote device was successful,
When transmission to the remote device fails, transmission control means for controlling to retransmit the image according to the time until the next shooting schedule,
A camera device comprising: When the transmission to the remote device fails, if the time until the next shooting schedule is longer than a predetermined time M, the transmission control unit waits for a predetermined time N and then retransmits the image. The camera device according to claim 1, wherein: The transmission control means,
When the transmission to the remote device fails, if the image is not retransmitted because the time until the next imaging schedule is less than the predetermined time, the image captured according to the response of the sensor is displayed. 3. The camera device according to claim 1, wherein the control is performed so as to transmit the image at the time of transmitting a new image by the next photographing. A monitoring unit that monitors communication quality related to transmission to the remote device,
The transmission control means, when transmission to the remote device fails due to deterioration of communication quality, if the time until the next shooting schedule is a predetermined time or more, and the communication quality is sufficiently restored to perform image transmission 2. The camera device according to claim 1, wherein the camera is controlled to retransmit the image. The transmission control means searches for another accessible remote device when transmission to the remote device fails, and when another accessible remote device is found, the image is displayed on the other remote device. The camera device according to claim 1, wherein the camera device is controlled to retransmit. When transmission to the remote device fails because the connection with the remote device is rejected at the authentication stage, another data for authentication is searched, and if another data for authentication is found, the other authentication data is searched. 2. The camera device according to claim 1, further comprising an authentication trial unit that attempts to authenticate the remote device using the data for use. An image transmission method for transmitting an image obtained by shooting to a predetermined remote device,
A shooting control step of controlling a camera to shoot according to a preset shooting schedule and a sensor response;
A determining step of determining whether transmission to the remote device is successful;
When transmission to the remote device fails, a transmission control step of controlling to retransmit the image according to the time until the next shooting schedule,
An image transmission method comprising: A program for controlling a camera device that transmits an image obtained by shooting to a predetermined remote device,
A shooting control step of controlling shooting to be performed in accordance with a preset shooting schedule and a reaction of a sensor,
A determining step of determining whether transmission to the remote device is successful;
In the case where transmission to the remote device has failed, according to the time until the next shooting schedule, a transmission control step of controlling to retransmit the image,
The program to execute.

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