JP7123156B2 - Communication equipment and communication system - Google Patents

Description

The present invention relates to communication equipment and communication systems.

2. Description of the Related Art In imaging systems equipped with surveillance cameras, the surveillance cameras are provided with WiFi (registered trademark) functions (hereinafter referred to as “wireless LAN functions”), enabling distribution of surveillance images and various settings through wireless communication. Also, various techniques have been proposed from the viewpoint of improving the convenience of the system (see, for example, Patent Document 1). In the technology disclosed in Patent Document 1, in a networked monitoring system, each device is instructed to transmit its own status by broadcasting. Also, when collecting device status on a one-to-one basis, such as with WiFi Direct (registered trademark) or Bluetooth (registered trademark), some technologies acquire the status of the device after performing connection processing to the device. Are known.

JP 2011-249912 A

In the technique disclosed in Patent Document 1, since it is necessary to wait for responses from all devices, it takes time to collect information, and another technique has been desired from the viewpoint of efficiency. Also, with technology that collects information on a one-to-one basis, when checking the status of another terminal, it is necessary to disconnect the currently connected device and reconnect. A different technique was called for.

The present invention has been made in view of such circumstances, and an object thereof is to solve the above problems.

The present invention is a communication device having a wireless communication function, comprising a control unit and a communication unit, wherein the control unit includes a management number for identifying the communication device, a password generation rule, and a password generation rule. generating wireless communication identification information of the communication device including status information of the communication device; generating a password from the wireless communication identification information based on the password generation rule; The login password of the communication device is set, and the communication unit transmits notification information including the identification information for wireless communication .
The control unit may include setting information of the communication device in the wireless communication identification information.
The control unit generates second wireless communication identification information of the communication device including a second password generation rule different from the current password generation rule, and based on the second password generation rule to generate a second password from the identification information on the second wireless communication, change the login password of the communication device to the second password, and You may transmit the alerting|reporting information containing identification information.
The present invention is a communication system comprising the communication device described above and a terminal device connectable to the communication device by wireless communication, wherein the terminal device relates to the generation rule of the password included in the identification information. Information is discriminated, a password is generated based on the discriminated generation rule, and the password is used to log in to the communication device.
The present invention is a communication system comprising the communication device described above and a terminal device connectable to the communication device by wireless communication, wherein the terminal device has a generation rule for the second password included in the identification information. information is discriminated, a password is generated based on the discriminated second password generation rule, and the password is used to log in to the communication device.

Advantageous Effects of Invention According to the present invention, it is possible to provide a technology for efficiently grasping device information of a communication device having a wireless communication function.

1 is a diagram showing a schematic configuration of a monitoring system according to an embodiment; FIG. 1 is a block diagram showing a schematic configuration of a monitoring camera according to an embodiment; FIG. 1 is a block diagram showing a schematic configuration of a tablet device according to an embodiment; FIG. It is a figure explaining relation between SSID and a password concerning an embodiment. FIG. 5 is a diagram illustrating a specific example of device status included in an SSID, according to the embodiment; FIG. 10 is a diagram showing a display example of a tablet terminal according to the embodiment; 4 is a flowchart of processing for connecting a tablet terminal to a surveillance camera according to an embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic configuration of a monitoring system 1 according to this embodiment. The monitoring system 1 includes a plurality of monitoring cameras 100 (host devices) having communication functions, and a tablet terminal 200 (client device) capable of communicating with the monitoring cameras 100 . Although three monitoring cameras 100 are shown here, the scope is not limited to this.

The surveillance camera 100 and the tablet terminal 200 are connected by a wireless LAN. A surveillance camera 100 serving as a host device (device on the connected side) of the wireless LAN function transmits an SSID (Service Set Identifier) as identification information, and a tablet terminal serving as a client terminal (device on the connecting side). 200 establishes communication using the password for that SSID.

In this embodiment, the monitoring camera 100 makes the SSID and password variable according to a predetermined rule, and includes the device status in the SSID. The tablet terminal 200 grasps the device status without establishing communication from the SSID, and when establishing communication, determines a password based on the password generation rule included in the SSID, and can communicate using the determined password. and

FIG. 2 is a functional block diagram showing a schematic configuration of the surveillance camera 100. As shown in FIG. Surveillance camera 100 includes main control unit 101 , video acquisition unit 102 , camera 103 , video distribution unit 104 , wireless communication control unit 105 , data control unit 106 , RAM 107 , ROM 108 , and wireless communication module 109 . and

The main control unit 101 is, for example, a CPU (Central Processing Unit), and controls the entire inside of the surveillance camera 100 in an integrated manner. In addition, the main control unit 101 manages SSIDs and passwords, and changes them at predetermined timings. At the time of the change, the model-specific information (MAC address and serial number), the operating state and settings of the monitoring camera 100, and the password generation rule are added again to the SSID. The timing for changing the SSID and password is, for example, when the surveillance camera 100 is activated, when the wireless LAN communication ends, or when a certain period of time has elapsed (regularly and except during connection). In addition, such timing settings may be set/changed from the tablet terminal 200 .

The video acquisition unit 102 acquires video from a camera 103 that captures a predetermined surveillance area. The video distribution unit 104 distributes the acquired data through wireless LAN communication (that is, the wireless communication control unit 105 and the wireless communication module 109).

The wireless communication control unit 105 is a device that performs wireless LAN communication according to the WiFi standard, for example, and communicates with an external device having wireless communication functions of the same standard, ie, the tablet terminal 200 , using the wireless communication module 109 . In addition, the wireless communication control unit 105 transmits an SSID including model-specific information, the operating state and settings of the monitoring camera 100, and password generation rule information as notification information. To realize communication, other security functions and countermeasures, such as MAC address filtering and PSK authentication of WPA2PSK, can be used in combination.

A data control unit 106 saves and reads data captured by the camera 103 and other data. A RAM 107 (volatile memory) and a ROM 108 (nonvolatile memory, an external recording medium such as a memory card) functioning as areas for saving and reading data are provided.

FIG. 3 is a functional block diagram showing a schematic configuration of the tablet terminal 200. As shown in FIG. The tablet terminal 200 includes a main control section 201 , a display section 202 , a user operation control section 204 , a wireless communication control section 205 , a RAM 207 , a ROM 208 and a wireless communication module 209 .

The main control unit 201 comprehensively controls each component of the tablet terminal 200 . A display unit 202 displays images distributed by the monitoring camera 100, which is a host-side device, and displays various applications. A user operation control unit 204 is an interface that acquires operations from the user, and is configured, for example, as various buttons (software) displayed on the display unit 202 or as physical buttons.

The wireless communication control unit 205 is a device that performs wireless LAN communication according to the WiFi standard, for example, and communicates with an external device having wireless communication functions of the same standard, here the monitoring camera 100 , using the wireless communication module 209 .

A RAM 207 (volatile memory) and a ROM 208 (nonvolatile memory, external recording medium such as HDD and memory card) functioning as areas for saving and reading data are provided.

Next, the form of each communication device will be described. Here, with reference to FIG. 4, the method of generating the SSID and password, which is a characteristic function of the present embodiment, will be described.

Explain the basic concept. As shown in FIG. 1, there are a plurality of surveillance cameras 100 serving as host devices, each of which has a "unique number or character string for identifying the device" such as a MAC address or serial number (hereinafter referred to as a "management number"). ). The main control unit 101 of the monitoring camera 100 has means for generating an SSID and password from the management number by a specific method, and performing communication using wireless LAN technology based on the generated SSID and password.

The specific method means, for example, "performing an encryption process such as addition of numbers/character strings from the control number and rearrangement of the arrangement order". A specific method is shared within the monitoring system 1, and the tablet terminal 200 can also generate the SSID and password by the same method. However, in the present embodiment, it is not necessary to generate an SSID and a password using a specific method on the tablet terminal 200 side, so only the surveillance camera 100 can generate the SSID and password using a specific method.

Conversion example 1 will be described. If the management number is "01234", as conversion processing A (SSID generation processing), a character string [A-1] representing the password generation method is added to the front position of the management number, and the device A character string [B] representing the state is added. The character string of the SSID generated at this stage is [A-1]01234[B].

Next, as conversion processing B (password generation processing), the sequence of SSIDs is reversed (front position→last position). The character string at this stage becomes [B]43210[A-1]. Furthermore, character strings [C-1] [C-2] for password generation are added to the front and rear positions of the character string. The generated password is [C-1][B]43210[A-1][C-2].

There are multiple types of generation rules for password generation, which are shared with the tablet terminal 200 . For example, information about what production rule is used for any of the character strings [C-1] [C-2] is included.

Conversion example 2 will be described. If the management number is [56789], as conversion processing A (SSID generation processing), a character string [A-2] representing the password generation method is added to the front position of the management number. A character string [B] representing the state is added. The SSID character string generated at this stage is [A-2]56789[B].

Next, as conversion processing C (password generation processing), the sequence of SSIDs is rearranged according to the number of characters. The character string at this stage is, for example, 89567[A-2][B]. Furthermore, character strings [C-3][C-24 for password generation are added to the front and rear positions of the character string. The generated password is [C-3]89567[A-2][B][C-4].

FIG. 5 is a diagram for explaining a specific example showing the device status included in the SSID. Conversion example 1 above will be described. The character string [B] in the SSID "[A-1]01234[B]" represents device status information, and this information is expressed as numbers and character strings. For example, each bit of 1 octet (8 bits) is assigned the state of the monitoring camera 100 (abnormal occurrence, recording, positioning, etc.), and is provided to the SSID.

Here, "Recording", "Positioning", "Spare (unused)", "Spare (unused)", "A error (FAN error)", "B error (insufficient recording capacity)", "C error (power supply error)" )” and “D abnormality (positioning abnormality)”. The first four bits indicate ON/OFF of a certain function, and "0" indicates "OFF", and "1" indicates "ON". The latter four bits indicate whether or not there is an abnormality in the device, and "0" indicates "no abnormality" and "1" indicates "abnormality present". In this example, the recording function is "ON", the positioning function is "OFF", and "C abnormality (power supply abnormality)" indicates that there is an abnormality.

FIG. 6 shows an example of screen A1 displayed on tablet terminal 200 when the above two SSIDs can be searched.

As shown in FIG. 6, the tablet terminal 200 determines the device status from the respective SSIDs transmitted by the two monitoring cameras 100, and displays them in the areas A2 and A3 corresponding to them. Connection buttons A6 and A7 for connecting to and logging in to the surveillance cameras 100 are provided below the areas A2 and A3.

For example, the surveillance camera 100 with SSID [01234] and the surveillance camera 100 with SSID [56789] are communicable, and their states are displayed from the SSID.

For the surveillance camera 100 with SSID [01234], the tablet terminal 200 has acquired the SSID shown in FIG. Based on the SSID, the wireless communication control unit 205 of the tablet terminal 200 determines from the SSID that “abnormality C” is occurring and that positioning is OFF during recording. It is displayed so that the effect can be understood. When an abnormality occurs, for example, the "connection button" A6 is highlighted, and by pressing it, a password corresponding to the SSID can be generated and logged in. Note that the areas A2 and A3 may function as buttons for logging in.

FIG. 7 shows a flow of processing for connecting the tablet terminal 200 to the surveillance camera 100 . First, in the tablet terminal 200, which is a client terminal, when the wireless communication control unit 205 connects to the monitoring camera 100, which is a host device, static scanning (passive scanning) in wireless LAN technology is used to identify the SSID of the peripheral device. (S10).

Note that since the static scan is used to acquire all peripheral SSIDs, the acquired SSIDs may include SSIDs unrelated to the monitoring system 1 . In order not to display irrelevant SSIDs, the tablet terminal 200 as shown in FIG. can be displayed in an easy-to-understand manner using buttons or the like on the display unit 202 of the tablet terminal 200 having a touch panel function, for example.

Subsequently, the main control unit 201 analyzes the SSID acquired by the wireless communication control unit 205 to determine the management number and device status of the surveillance camera 100 (S11). The main control unit 201 causes the display unit 202 to display the management number and device status using the determination result (S12).

Furthermore, when the user 210 performs a login operation to a specific camera 100, the main control unit 201 analyzes the password generation rule from the SSID of the camera (S13), and generates a password based on the rule (S14). , log in (S15). By logging in to the camera 100 specified by the user 210 in this way, the tablet terminal 200 can acquire the video recorded from the monitoring camera 100 and display it on the display unit 202, and can also view details of the device status. can be checked and various settings can be made.

As described above, according to the present embodiment, in the wireless communication between the monitoring camera 100 and the tablet terminal 200 in the monitoring system 1, it is possible to prevent communication failure and password leakage due to password transmission error. Moreover, the tablet terminal 200 can use wireless communication without being conscious of the SSID and password of the surveillance camera 100 . Also, by making the rule for generating a password from an SSID variable, it is possible to prevent the password from being easily guessed. Furthermore, the tablet terminal 200 can read information (device status (presence or absence of abnormality, setting information)) of the connected monitoring camera 100 from the SSID without establishing communication.

The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is an example, and that various modifications can be made to the combination of each component, and that such modifications are within the scope of the present invention.

1 surveillance system (communication system) 100 surveillance camera (communication device/host device) 101, 201 main control unit 102 image acquisition unit 103 camera 104 image distribution unit 105, 205 wireless communication control unit 106 data control unit 107, 207 RAM 108, 208 ROMs 109 and 209 wireless communication module 200 tablet terminal (client device) 202 display unit 204 user operation control unit 210 user

Claims (5)

A communication device having a control unit and a communication unit and having a wireless communication function,
The control unit
generating wireless communication identification information of the communication device, including a management number for identifying the communication device, a password generation rule, and status information of the communication device;
generating a password from the wireless communication identification information based on the password generation rule;
Set the generated password as the login password of the communication device,
The communication device, wherein the communication unit transmits notification information including identification information on the wireless communication. 2. The communication device according to claim 1, wherein said control unit includes setting information of said communication device in said wireless communication identification information. A communication system comprising the communication device according to claim 1 and a terminal device connectable to the communication device by wireless communication,
wherein the terminal device determines information relating to the password generation rule included in the identification information, generates a password based on the determined generation rule, and logs into the communication device with the password. system. The control unit
generating second wireless communication identification information of the communication device including a second password generation rule different from the current password generation rule;
generating a second password from the second wireless communication identification information based on the second password generation rule;
changing the login password of the communication device to the second password;
The communication unit
2. The communication device according to claim 1, wherein the notification information including the identification information on the second wireless communication is transmitted. A communication system comprising the communication device according to claim 4 and a terminal device connectable to the communication device by wireless communication,
The terminal device determines information relating to the second password generation rule included in the identification information, generates a password based on the determined second password generation rule, and logs in to the communication device with the password. A communication system characterized by:

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