JP2002344927A - Image transmission method, image transmission program and image transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image transmission method that can provide immunity to an illegal access to an image by a 3rd party and reduce a time until a user terminal displays an image after the user terminal requests transmission of the image. SOLUTION: The image transmission method is configured such that a storage means 201 stores an encrypted image, encrypts a URL(Uniform Resource Locator) of the image, the encrypted URL is transmitted to a mobile phone 300 (user terminal) and the encrypted image is decoded and then sent to the mobile phone 300 (user terminal).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission method, an image transmission program, and an image transmission apparatus for transmitting an image picked up in a user's house or another place to a mobile phone or other user terminal.

[0002]

2. Description of the Related Art Conventionally, an image captured in a user's house is
The data is transmitted to a user terminal such as a personal computer or a mobile phone of the user via the Internet, and is displayed on the user terminal. For example, when an event such as a visitor's visit, an intruder's intrusion, a fire, or a gas leak is detected, an image captured when the event occurs is transmitted to a remote user terminal via the Internet. Sent to. Therefore, the user can remotely confirm the status of the house with images.

As a method of preventing a third party from accessing an image, a method of transmitting authentication information from a user terminal to an image transmission source, collating the authentication information at the image transmission source, and then transmitting the image. There is. However, the method relying only on the verification of the authentication information has a problem that a third party can relatively easily obtain information necessary for accessing an image by so-called eavesdropping or the like. Therefore, a method has been adopted in which all data transmitted between an image transmission source and a user terminal are encrypted to perform communication.

[0004]

However, such a conventional technique has a problem that if the size of an image to be transmitted is large, it takes a long time to perform an encryption process. In particular, since a mobile phone has a lower processing capacity than a device that transmits an image, the mobile phone spends time in decoding processing on the mobile phone, and requests an image on the mobile phone before displaying the image on the mobile phone. There was a problem that it took time before.

The present invention has been made to solve such a problem, and can be made robust against unauthorized access to an image by a third party, and can request an image at a user terminal. To provide an image transmission method, an image transmission program, and an image transmission apparatus capable of shortening the time required to display an image on a user terminal from the user.

[0006]

According to the image transmission method of the present invention, an image is encrypted and stored in storage means,
An RL (Uniform Resource Locator) is configured to be encrypted and transmitted to a user terminal, and the encrypted image is decrypted and transmitted to the user terminal. With this configuration, it is possible to be robust against unauthorized access to the image by a third party, and to shorten the time required from the request of the image at the user terminal to the display of the image at the user terminal. You can do it.

The image transmission method according to the present invention has a configuration in which the decoded image is deleted after being transmitted to the user terminal. With this configuration, since only the encrypted image is stored and the unencrypted image is deleted, it is more robust against unauthorized access to the image by a third party.

[0008] In the image transmission method according to the present invention, the UR of the image
The encryption of L is performed by encrypting an image menu including the URL of the image. With this configuration, the user terminal only has to decode the image menu for each page, and the decoding process in the user terminal is simplified.

An image transmission program according to the present invention has a function of encrypting a URL (Uniform Resource Locator) of an encrypted image and transmitting the encrypted URL to a user terminal. And a function of decoding the coded image and transmitting the decoded image to the user terminal. With this configuration, the third
It is possible to make the system robust against unauthorized access to the image by the user, and it is possible to shorten the time required from the request of the image at the user terminal to the display of the image at the user terminal.

[0010] The image transmission program of the present invention has a configuration in which a computer realizes a function of deleting the decoded image after transmitting it to the user terminal. With this configuration, since only the encrypted image is stored and the unencrypted image is deleted, it is more robust against unauthorized access to the image by a third party.

The image transmission program according to the present invention has a configuration in which the URL of the image is encrypted by encrypting an image menu including the URL of the image.
With this configuration, the user terminal only has to decode the image menu for each page, and the decoding process in the user terminal is simplified.

[0012] The image transmission apparatus of the present invention encrypts an image and a URL (Uniform Resource Locator) of the image and, when receiving an image request from a user terminal, decrypts the encrypted image. And a communication unit for transmitting the encrypted URL to the user terminal and transmitting the decrypted image to the user terminal. With this configuration, it is possible to be robust against unauthorized access to the image by a third party, and to shorten the time required from the request of the image at the user terminal to the display of the image at the user terminal. You can do it.

The image transmitting apparatus according to the present invention has a configuration in which the decoded image is deleted after being transmitted to the user terminal. With this configuration, since only the encrypted image is stored and the unencrypted image is deleted, it is more robust against unauthorized access to the image by a third party.

[0014] The image transmission apparatus according to the present invention is characterized in that the image UR
The encryption of L is performed by encrypting an image menu including the URL of the image. With this configuration, the user terminal only has to decode the image menu for each page, and the decoding process in the user terminal is simplified.

[0015]

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

FIG. 1 is a configuration diagram of a home security system to which an embodiment of an image transmission method according to the present invention is applied.

In the user's home 100, a visitor visits,
A sensor 101 for detecting the occurrence of an event such as an intruder, a fire, or a gas leak, a monitoring camera 102 for taking an image, and an image notification terminal 103 are provided.
The image notification terminal 103 includes a storage unit 104 and a control unit 1
05 and a communication means 106. The storage unit 104 of the image notification terminal 103 stores an image notification method. The control unit 105 of the image notification terminal controls the communication unit 106 of the image notification terminal. Communication means 1 of image notification terminal
06 transmits an image captured by the monitoring camera 102 to the server 200 via the telephone network 1 when the sensor 101 recognizes the occurrence of the event.

The service provider includes a server 200
(Image transmission device). The server 200 has a storage unit 201, a control unit 202, and a communication unit 203.

The control means 202 of the server encrypts an image picked up at the user's house or at another image pick-up place. Also,
The control means 202 of the server transmits a URL (Uniform Resource Information) indicating a protocol for accessing the image and a position of the image.
urce Locator). Further, when there is an image request from the mobile phone 300, the control means 202 of the server decrypts the encrypted image.

The communication means 203 of the server transmits the encrypted image menu to the mobile phone 300. The communication means 203 of the server transmits the decrypted image to the mobile phone 300.
Send to

The storage means 201 of the server stores the encrypted image. The storage means 201 of the server has
An image transmission program that causes the server 200 to realize a function for image transmission is recorded in advance. The server 2
00 uses an apparatus generally called a computer, and the computer executes an image transmission program.

A user carries a mobile phone 300. The mobile phone 300 has a storage unit, a display unit, an operation unit, a control unit, and a communication unit (each unit is not shown). A program called a browser is stored in the storage unit of the mobile phone 300 in advance. The browser program allows a mobile phone to realize a function of displaying an image, a function of decrypting encrypted reception data, and a function of encrypting transmission data.

FIG. 2 is a sequence diagram showing an embodiment of the image transmission method according to the present invention.

First, the occurrence of an event such as a visitor's visit, an intruder's intrusion, a fire, or a gas leak is detected by the sensor 1.
01, and the image notification terminal 103 recognizes the occurrence of the event (S111). Further, the original image at the time when the event occurs is captured by the monitoring camera 102, and the original image is input to the image notification terminal 103 (S11).
2). In the server 200, the communication unit receives, from the image notification terminal 103, the type of the event that has occurred and the original image captured when the event has occurred (S113).

In the server 200, the control means encrypts the image P (x, y) received from the image alerting terminal 103 with the encryption key k1 using the encryption function e, and the encrypted data is encrypted. An image S (u, v) is obtained (S114). Server 20
0 indicates that the storage means stores the encrypted image. In the server 200, the control unit deletes the unencrypted image P (x, y) and does not accumulate it in the storage unit.

Further, the server 200 notifies the communication means to the user's mobile phone 300 by e-mail that there is an image (S115). The mobile phone 300 logs in to the server 200 with the login URL described in the e-mail (S116).

In the server 200, the communication means transmits an image menu including the URL of the image to the mobile phone 300 (S117). At this time, the image menu including the URL of the image is encrypted by SSL (Secure Sockets Layer) and transmitted to the mobile phone 300. That is, the image menu is changed to the HTTPS (Hyper Text Transfer Protocol).
over transport layer security / Secure sockets lay
er) and transmitted. The mobile phone 300
Decrypt and display the encrypted image menu. Further, the mobile phone 300 makes an image request to the server 200 based on the URL of the image included in the image menu (S118). At this time, the image request including the URL of the image is encrypted by SSL and transmitted to the server 200. That is, the image request is transmitted after being encrypted by HTTPS. The server 200 decrypts the encrypted image request.

In the server 200, the control means uses the decryption key k2 to decrypt the encrypted image S (u, v) with the decryption function d.
To obtain a plaintext image P (x, y) (S
119). In the server 200, the communication unit transmits the decoded image to the mobile phone 300 (S120). It should be noted that the server 200 determines that the control means
(X, y) is deleted and not stored in the storage means. The mobile phone 300 displays an image. In addition, the mobile phone 300
When the user performs the logout operation, the logout is notified to the server 200 (S121).

FIG. 3 is a diagram showing an example of screen transition in the image transmission method according to the present invention.

The login screen is a screen displayed for performing a login operation on the mobile phone 300, and requests the user to input authentication information.

The main menu is a screen displayed when a user logs in. For example, it is a screen for selecting a menu of an image captured by an intercom (image menu 1), a menu of an image of an infant or a caregiver taken by an indoor camera (image menu 2), and a menu of other images. The image menu 1 to the image menu N are screens displayed when the image menu is selected in the main menu. For example, this is a screen for selecting an image captured at 9:00 on April 1 and an image captured at 10:00 on April 1 and an image captured at another time. Images 1 to N are images displayed when an image is selected in the image menu. The logout screen is a screen displayed when a browsing end operation is performed on the main menu. When the user logs out, the screen changes to a login screen.

In the above screen, at least the data of the image menu 1 to the image menu N including the URL of the image are encrypted, transmitted to the mobile phone, and decrypted and displayed on the mobile phone. The data of the images 1 to N are decoded, transmitted to the mobile phone, and displayed on the mobile phone.

As described above, the image transmission method, the image transmission program, and the image transmission apparatus of the present embodiment encrypt the URL (Uniform Resource Locator) of the image and transmit it to the user terminal, and decrypt the encrypted image. Since the image is transmitted to the user terminal, the image can be made robust against unauthorized access to the image by a third party, and the processing speed is lower than that of an image transmission source such as a server. There is no need to decode the image at the user terminal, and it is possible to shorten the time required from when the image is requested at the user terminal to when the image is displayed at the user terminal. Since the image data does not include information necessary for accessing the image, the image data hardly affects damage caused by so-called eavesdropping.

Further, the image transmission method, the image transmission program and the image transmission apparatus of the present embodiment store only the encrypted image and delete the plaintext image, so that unauthorized access to the image by a third party is prevented. And become more robust.

Further, since the image transmission method, the image transmission program, and the image transmission apparatus of the present embodiment perform encryption in units of image menus including the URL of the image, the user terminal can decrypt the image menu for each page. Often, the decoding process at the user terminal is simplified.

Further, the image transmission method, the image transmission program and the image transmission device of the present embodiment are designed so that the service provider encrypts and decrypts the image, but the present invention is not limited to this. The image is transmitted to the user terminal by encrypting the image in the image issuing terminal and storing it in the storage means, and the URL of the image is encrypted and transmitted to the user terminal. When the user terminal requests the image, the image is decrypted and transmitted to the user terminal. It may be transmitted. In this case, the image notification terminal uses a device generally called a computer,
This computer may execute the image transmission program.

The encryption method is not limited to SSL,
S (Data Encryption Standard) private key encryption, RSA
(Rivest Shamir Adleman) Public key encryption or the like may be used. The transmission protocol is HTTP (Hyper Text Trans
fer Protocol), FTP (File Transfer Prot)
ocol).

The image transmission program of the present embodiment may be recorded on a memory, a disk, a CD-ROM, or any other recording medium, and may be downloaded via a network such as the Internet. May be performed. Further, the image transmission program of the present embodiment may be described in any language.

[0039]

According to the present invention, it is possible to make the system robust against unauthorized access to the image by a third party, and from when the image is requested at the user terminal to when the image is displayed at the user terminal. An image transmission method, an image transmission program, and an image transmission method having an excellent effect that the time can be shortened;
Also, an image transmission device can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a home security system to which an image transmission method according to the present invention is applied.

FIG. 2 is a sequence diagram showing an embodiment of an image transmission method according to the present invention.

FIG. 3 is a diagram showing an example of screen transition in the image transmission method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Sensor 102 Surveillance camera 103 Image alert terminal 104 Image alert terminal storage means 105 Image alert terminal control means 106 Image alert terminal communication means 200 Server (image transmission device) 201 Server memory means 202 Server control Means 203 Communication means of server 300 Mobile phone (user terminal)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 7/38 H04B 7/26 109R F-term (Reference) 5B085 AE00 BA07 BC01 BE07 BG07 5C054 AA02 AA05 CA04 CC03 CD04 DA09 EA01 EA03 EA05 HA18 HA24 5C064 BA07 BB02 BC17 BC22 BC23 BD02 BD07 BD08 5J104 AA01 PA02 PA07 5K067 AA30 BB04 BB21 DD52 HH36

Claims (9)

[Claims] 1. An image is encrypted and stored in storage means, a URL (Uniform Resource Locator) of the image is encrypted and transmitted to a user terminal, and the encrypted image is decrypted and transmitted to the user terminal. An image transmission method characterized by transmitting. 2. The image transmission method according to claim 1, wherein the decrypted image is deleted after being transmitted to the user terminal. 3. The image transmission method according to claim 1, wherein the encryption of the URL of the image is performed by encrypting an image menu including the URL of the image. 4. The URL of the encrypted image (Uniform Re
source Locator) to the computer, and a function of encrypting and transmitting the encrypted image to the user terminal when receiving an image request from the user terminal. An image transmission program characterized by being realized. 5. The computer-readable storage medium according to claim 4, wherein a function of deleting the decoded image after transmitting the image to the user terminal is realized by a computer. 6. The image transmission program according to claim 4, wherein the encryption of the URL of the image is performed by encrypting an image menu including the URL of the image. 7. An image and a URL (Uniform Resource Code) of the image.
urce Locator), and when there is an image request from the user terminal, control means for decoding the encrypted image, and transmitting the encrypted URL to the user terminal. Communication means for transmitting the decoded image to the user terminal. 8. The image transmission apparatus according to claim 7, wherein the decoded image is deleted after being transmitted to the user terminal. 9. The image transmission apparatus according to claim 7, wherein the encryption of the URL of the image is performed by encrypting an image menu including the URL of the image.