JPH11331820A - Image data receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the image data receiver that can reconnect to a network automatically, with respect to a prescribed image data supply section, on the occurrence of an event such as stop of supply of image data or an undesired end of connection to the network. SOLUTION: In the case that a 1st discrimination section 27 of the image data receiver 71 discriminates that a state of not receiving a moving image from an object monitor section connecting to itself through a network is consecutive for a prescribed time or longer, the connection is once released, and a connection processing section 23 connects again automatically to the object monitor section being a connection object, based on connection data stored in a storage section 31. In the case that a 2nd discrimination section 29 discriminates that the connection to the object monitor section is undesirably released without autonomous connection release by the connection processing section, the connection processing section 23 again connects to the object monitor section being the connection object automatically, based on the connection data of the storage section 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data receiving apparatus connected to a predetermined image data supply unit through a network and supplied with image data, and more particularly to a remote place having an imaging function of a monitoring object to be imaged. The present invention relates to an image data receiving device of a monitoring device for detecting occurrence of an abnormality based on a captured image transmitted from an installed image data supply unit via a predetermined network.

[0002]

2. Description of the Related Art As shown in FIG. 4, a monitoring apparatus to which this type of image data receiving apparatus is applied has at least one (generally, a plurality) of target monitoring units (generally a plurality) for imaging a predetermined target. Moving image data (image data) from each target monitoring unit 1 through a data supply unit 1 and a predetermined network 3
And a central monitoring unit 5 that receives the supply of the information.

Each target monitoring unit 1 captures an image of a predetermined monitoring target, and processes a moving image captured by the imaging camera 7 into predetermined moving image data, which is supplied to the central monitoring unit 5 through the network 3. And an image data supply device 9. The image data supply device 9 is connected to the network 3
The image signal supplied from the imaging camera 7 is converted into a digital signal by the image data supply device 9, further compressed, and then sent out as moving image data through the network 3. ing.

The central monitoring unit 5 is connected to the image data supply device 9 of each target monitoring unit 1 through the network 3, receives supply of moving image data from the image data supply device 9, and generates a video signal based on the moving image data. , And a display device 13 for displaying a moving image based on the video signal created by the image data receiving device 11.

The image data receiving device 11 is provided with an input receiving unit 11a for receiving a predetermined operation input to the image data receiving device 11. An operation input or the like for connecting to one image data supply device 9 and receiving moving image data is received.

[0006] In this monitoring apparatus, a connection is made to a desired target monitoring unit 1 via a network 3, and a moving image created based on the moving image data supplied from each target monitoring unit 1 is displayed on a display device 13. By monitoring this, each monitoring target at a remote location or the like is monitored.

By the way, when monitoring is performed through the network 3 as described above, supply of moving image data to be continuously transmitted is stopped due to factors such as congestion of transmission information on the network 3. The connection of the network 3 between the target monitoring unit 1 and the base station (communication server or the like) in the network 3 or the target monitoring unit 1 is undesirably disconnected due to automatic judgment (connection termination).
May be done. It is known that when the supply of moving image data is stopped, once the connection is terminated and the connection is re-established, the supply of moving image data is often performed smoothly.

On the other hand, the conventional image data receiving apparatus 1
In the first example, in the case where the supply of moving image data is stopped or the network connection is undesirably terminated as described above, the observer himself / herself performs a predetermined operation input from the input receiving unit 11a to monitor the target. This is achieved by reconnecting the network 3 with the unit 1.

[0009]

However, in the conventional image data receiving apparatus of the monitoring apparatus, when the supply of the moving image data is stopped as described above, the monitor himself / herself receives a predetermined operation input from the input receiving unit 11a. Must be performed to reconnect the network 3 to the target monitoring unit 1, which causes a problem that the monitoring person is troubled by complicated reconnection work, and the burden on the monitoring person is increased.

In view of the above-mentioned problems, the present invention provides an automatic network connection with a predetermined image data supply unit when the supply of image data is stopped or the network connection is undesirably terminated. It is an object of the present invention to provide an image data receiving device that can be reconnected to a device.

[0011]

The technical means for achieving the above object is to connect a predetermined image data to an image data supply unit capable of outputting the image data through a predetermined network through the network, and to connect the image data supply unit to the image data supply unit. An image data receiving apparatus that receives supply of the image data from a connection processing unit that performs a connection process with the image data supply unit through the network, and a network that is connected by the connection processing unit. An image data receiving unit that receives the supply of the image data from the image data supply unit, and whether or not a state in which the image data is not supplied from the connected image data supply unit continues for the predetermined time or more And a connection with the image data supply unit through the network, And at least one of a second determining unit that determines whether or not the processing unit has been disconnected without spontaneously disconnecting the connection, and is necessary for connecting to the connected image data supply unit through the network. If the result of the determination by the first determination unit is positive, the connection between the connected image data supply unit is released, and the storage unit storing the stored data is stored in the storage unit. While instructing the connection processing unit to reconnect to the connected image data supply unit through the network based on the data, while the determination result of the second determination unit is positive, An instruction unit for instructing the connection processing unit to reconnect via the network to the image data supply unit disconnected based on the data stored in the storage unit. The features.

[0012]

FIG. 1 is a block diagram of an image data receiving device of a monitoring device according to an embodiment of the present invention. The monitoring device to which the image data receiving device 21 according to the present embodiment is applied has the same configuration as the conventional monitoring device of FIG. 4 except that the image data receiving device 21 used is different. The same reference numerals are given and the description is omitted.

The image data receiving apparatus 21 according to the present embodiment
As shown in FIG. 1, a connection processing unit 23, an image data receiving unit 25, a first determining unit 27, a second determining unit 29, a storage unit 31, an input receiving unit 33, and a central processing unit that controls these units (Instruction unit) 35.

Here, the central processing unit 35 and the first determination unit 27
In addition, the second determination unit 29 may be realized by a CPU controlled by a program. Further, predetermined functions among the functions of the connection processing unit 23, the image data receiving unit 25, and the input receiving unit 33 may be realized on the CPU.

The connection processing unit 23 manages a connection process between the image data receiving device 21 and each of the target monitoring units 1 through the network 3, and includes a modem and the like. In accordance with an instruction from the central processing unit 35, connection processing is performed with each target monitoring unit 1 through the network 3, and an instruction to supply moving image data to each target monitoring unit 1 is issued.

The image data receiving unit 25 includes a connection processing unit 23
The moving image data is supplied from each target monitoring unit 1 via the network 3 connected by the above, and the moving image data is subjected to decompression processing and output to the display device 13 as a predetermined video signal.

The first judging section 27 judges whether or not a state in which no moving image data is supplied from each of the connected object monitoring sections 1 has continued for a predetermined time or more.
And the judgment result is sequentially output to the central processing unit 35.

The second judging unit 29 is connected to the connected object monitoring unit 1
It is determined through the connection processing unit 23 whether or not the connection of the network 3 between the connection processing unit 23 and the connection processing unit 23 has been disconnected without voluntarily releasing the connection, and the determination result is sequentially output to the central processing unit 35. It has become. Here, factors that cause the connection with the connected target monitoring unit 1 to be disconnected without the connection processing unit 23 voluntarily releasing the connection include:
Depending on factors such as the congestion state of the transmission information on the network 3, the target monitoring unit 1 is automatically determined by the base station (communication server or the like) in the network 3 or each target monitoring unit 1.
There is a case where the connection with the terminal is undesirably released (connection terminated).

The storage unit 31 is configured to include a nonvolatile storage element such as an EEPROM or the like, and is connected to the target monitoring unit 1 that is in a connected state at that time among the plurality of target monitoring units 1 that can be connected. Connection data (data) necessary for connection through the Internet is stored. This storage unit 3
The stored data 1 is sequentially rewritten by the central processing unit 35 each time the connected target monitoring unit 1 is changed. The connection data stored in the storage unit 31 includes address data (IP address) in the network 3 of the connected target monitoring unit 1 and the like.

Further, the supply of the moving image data to be supplied is stopped and the connection to the network 3 is spontaneously terminated based on the result of the judgment by the first judgment unit 23. When the connection to the network 3 is terminated by a communication server or the like, mode data indicating whether or not to reconnect automatically is also stored.

The input receiving unit 33 includes a predetermined operation input key (switch) and a reading device for reading information stored in a predetermined storage medium (floppy disk or the like) as required. The operation information necessary for operating the image data receiving device 21 is received through such means.

Therefore, from the input receiving unit 33,
An input for connecting to the image data supply device 9 of each target monitoring unit 1 through the network 3 to receive supply of moving image data, an input for changing a mode as to whether or not to perform automatic reconnection, and the like are performed. It has become.

The central processing unit 35 controls the connection processing unit 23, the image data receiving unit 25, and the like based on the contents of the input from the input receiving unit 33, and the moving image data supplied from each of the connected object monitoring units 1 The moving image of the monitoring target created from the display device 1 through the image data receiving unit 25
3 is displayed.

When a positive determination result is given from the first determination unit 27, the central processing unit 35 disconnects the connected network 3 and, at the same time, releases the contents of the mode data in the storage unit 31. Indicates that automatic reconnection is to be performed, and reconnects to the target monitoring unit 1 that has been connected up to that time based on the connection data stored in the storage unit 31 via the network 3 in accordance with this, An instruction to supply the moving image data to the target monitoring unit 1 is given to the connection processing unit 23.

The central processing unit 35 includes a storage unit 31
If the content of the mode data indicates that automatic reconnection should be performed, and the second determination unit 29 gives a positive determination result, the connection data stored in the storage unit 31 Based on this, the connection is re-connected to the target monitoring unit 1 that has been connected up to that point through the network 3, and an instruction to cause the target monitoring unit 1 to supply moving image data is given to the connection processing unit 23.

FIG. 2 is a flow chart showing the contents of processing when the mode is changed in the image data receiving apparatus 21 as to whether or not to perform automatic reconnection. In step S1, when an operation input for changing the operation mode of the image data receiving device 21 to the operation mode for changing the mode is input from the input receiving unit 33, the process proceeds to step S2, and the storage unit 31 The contents of the current setting state are displayed on the display device 13 through the image data receiving unit 25, and the process proceeds to step S3 to wait for an input for changing the setting.

If an input for changing the setting is made in step S3, the process proceeds to step S4, and the central processing unit determines whether or not the input content input in step S3 indicates that automatic reconnection should be performed. If it is determined by 35 that it indicates that automatic reconnection should be performed, the process proceeds to step S5. If the instruction does not indicate that automatic reconnection should be performed, the process proceeds to step S6.

In step S5, the central processing unit 35 stores the mode data indicating that automatic reconnection should be performed in the storage unit 31.
And the operation mode of the image data receiving apparatus 21 is switched to the normal operation mode. Step S
In 6, the mode data indicating that automatic reconnection is not performed is registered in the storage unit 31 by the central processing unit 35, and the operation mode of the image data receiving apparatus 21 is switched to the normal operation mode.

FIG. 3 is a flowchart showing a part of the processing contents of the image data receiving apparatus 21 relating to the automatic reconnection processing. In step S11, a connection process to the desired target monitoring unit 1 is performed, and preparations for starting supply of moving image data from the target monitoring unit 1 are completed.

In step S12, a determination is made by the first determination unit 27 as to whether or not the supply of moving image data has been stopped for a predetermined time or longer. If the supply has not been stopped for a predetermined time or longer, the process proceeds to step S13. If it has been stopped for a predetermined time or more, the process proceeds to step S14. In step S14, the connection of the network 3 with the connected target monitoring unit 1 is terminated by the connection processing unit 23 according to the instruction of the central processing unit 35, and the process proceeds to step S15.

In step S13, the central processing unit 35 determines whether or not the connected network 3 has been disconnected. The disconnection here includes the case where the connection is voluntarily released from the image data receiving device 21 side by the regular connection releasing process and the case where the connection releasing process is not performed from the image data receiving device 21 side. Regardless, the case where the connection with the target monitoring unit 1 is undesirably disconnected by the communication server or the like in the network 3 is included. If it is determined in step S13 that the connection has not been released, the process returns to step S12. If it is determined that the connection has been released, the process proceeds to step S16.

In step S16, the second determination unit 29 determines whether the disconnection is not spontaneous and is undesirable, as described above. If it is not, disconnection of the moving image data is performed. If the processing is ended and the processing is not desired, the process proceeds to step S15.

In step S15, the central processing unit 35 determines whether or not the mode data in the storage unit 31 is in the automatic reconnection mode. On the other hand, if it is determined that the automatic reconnection mode is set, the process proceeds to step S17.

In step S17, based on the connection data stored in the storage unit 31, the connection to the target monitoring unit 1 disconnected in the previous step S13 is reconnected via the network 3, and the supply of the moving image data is monitored by the target monitoring unit. The instruction to be performed by the unit 1 is given from the central processing unit 35 to the connection processing unit 23. In step S18, the preparation for the supply of the moving image data from the target monitoring unit 1 is completed.
Return to 2.

As described above, according to the present embodiment, when the automatic reconnection mode is set, the state where no moving image data is supplied from the connected object monitoring unit 1 has continued for the predetermined time or more. After the connection is once released, the connection is automatically re-connected to the target monitoring unit 1 to be connected based on the connection data stored in the storage unit. Network 3 between
If the connection is undesirably disconnected without the connection processing unit 23 spontaneously releasing the connection, the connection is automatically reconnected to the target monitoring unit 1 to be connected. Therefore, when the supply of moving image data is stopped and the network connection is undesirably terminated, there is no need for the observer to perform a reconnection operation, thereby reducing the burden on the observer. Can be.

Further, since it is possible to change the mode of whether or not to perform automatic reconnection, there is an advantage that various modes of use can be accommodated.

In this embodiment, the case where the image data receiving apparatus according to the present invention is applied to a monitoring apparatus has been described. However, the present invention can be applied to a case where image data (particularly moving image data) can be supplied through a predetermined network. It can be applied to anything.

[0038]

According to the first aspect of the present invention, the first judging section is provided, and the state in which the image data is not supplied from the connected image data supplying section has continued for the predetermined time or more. When the first determination unit determines that the connection has been established, the connection is once released, and then automatically reconnected to the image data supply unit to be connected based on the data stored in the storage unit. And the second
A determination unit is provided, and when the second determination unit determines that the connection of the network with the connected image data supply unit has been disconnected without the connection processing unit voluntarily releasing the connection, Automatically reconnects to the image data supply unit to be connected, which is stored in the storage unit, so that the supply of image data is stopped and the network connection is undesirably terminated. When this occurs, there is no need for the observer to perform any operation for reconnection, and the burden on the observer can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of an image data receiving device of a monitoring device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing content at the time of mode change of whether or not to perform automatic reconnection in the image data receiving apparatus of FIG.

3 is a diagram showing a flowchart of a part related to an automatic reconnection process in the processing content of the image data receiving device in FIG. 1;

FIG. 4 is a diagram showing a configuration of a typical monitoring device to which a conventional image data receiving device is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Target monitoring part 3 Network 5 Central monitoring part 7 Imaging camera 9 Image data supply device 13 Display device 21 Image data receiving device 23 Connection processing part 25 Image data receiving part 27 First judging part 29 Second judging part 31 Storage part 33 Input Reception unit 35 Central processing unit

Claims (1)

[Claims] 1. An image data receiving apparatus connected to an image data supply unit capable of outputting predetermined image data through a predetermined network through the network, and receiving supply of the image data from the image data supply unit, A connection processing unit that performs connection processing with the image data supply unit through the network; and image data that is supplied with the image data from the image data supply unit through the network connected by the connection processing unit. A receiving unit, a first determining unit that determines whether or not the state in which the image data is not supplied from the connected image data supplying unit continues for the predetermined time or more, and the image data transmitted through the network. Whether the connection with the supply unit has been released without the connection processing unit spontaneously releasing the connection At least one of a second determination unit that determines whether or not the storage unit stores data necessary for connecting to the connected image data supply unit through the network; If the determination result is affirmative, the connection with the connected image data supply unit is released, and the connected image data supply unit is connected based on the data stored in the storage unit. While instructing the connection processing unit to reconnect through the network, if the determination result of the second determination unit is affirmative, the connection is released based on the data stored in the storage unit. An instruction unit that instructs the connection processing unit to reconnect to the image data supply unit via the network.