Image distribution method employing both a first network whose bandwidth is not assured and second network whose bandwidth is assured for control and image transmission

• US 7,239,343 B2
• Filed: 03/10/2003
• Issued: 07/03/2007
• Est. Priority Date: 03/29/2002
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kawai, Tomoaki, Ohsawa, Hiroyuki, Suzuki, Kazuko
• Primary Examiner(s): Vu; Ngoc-Yen
• Assistant Examiner(s): HENDERSON, ADAM
• Application Number:
  US10/383,651
• Publication Number:
  US 20030184651A1
• Time in Patent Office: 1,576 Days
• Field of Search: 34821199-21114, 348/552, 725/105
• US Class Current: 348/211.3
• CPC Class Codes: H04N 1/00209 Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
• CPC Class Codes: H04N 1/00307 with a mobile telephone apparatus constructional features of portable telephone sets H04M1/0202; mobile radio systems H04W84/00
• CPC Class Codes: H04N 1/00312 with a digital transmission apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, SMS or ISDN device transmitting or receiving via a computer, e.g. using e-mail, a computer network or the internet H04N1/00214; transmission of digital information H04L
• CPC Class Codes: H04N 2201/0015 Control of image communication with the connected apparatus, e.g. signalling capability
• CPC Class Codes: H04N 2201/0039 Connection via a network
• CPC Class Codes: H04N 2201/0084 Digital still camera
• CPC Class Codes: H04N 23/62 Control of parameters via user interfaces
• CPC Class Codes: H04N 23/66 Remote control of cameras or camera parts, e.g. by remote control devices
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 23/695 Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects

Abstract

An image distribution method for distributing an image acquired by a camera on a network includes the steps of receiving control information for the camera from an image reception apparatus via a packet-switched network; and sending an image acquired by the camera to the image reception apparatus via a circuit-switched network.

Claims

1. An image distribution method for distributing an image acquired by a camera on a network, comprising the steps of:

receiving control information to control the camera from an image reception apparatus via a first network whose bandwidth is not assured; and

sending an image acquired by the controlled camera to the image reception apparatus via a second network whose bandwidth is assured,

wherein the image acquired by the camera is sent to the image reception apparatus via the second network when the image reception apparatus forms a connection via the first network with a control server for sending control information to control the camera, and

wherein the image reception apparatus obtains, via the first network, information for obtaining the image, and forms the connection for sending the image via the second network based on the information.

2. An image distribution method according to claim 1, wherein the image acquired by the camera is sent to the image reception apparatus via the second network when the image reception apparatus acquires a control right of the camera.

3. An image distribution method according to claim 2, wherein the image reception apparatus lets a distribution apparatus for distributing an image acquired by the camera call back the image reception apparatus via the second network when the image reception apparatus acquires the control right of the camera.

4. An image distribution method according to claim 1, wherein the connection via the first network is disconnected when sending of the image acquired by the camera is started.

5. An image distribution method according to claim 1, wherein the control server executes authentication of a user of the image reception apparatus when a connection with the image reception apparatus is formed.

6. An image distribution method according to claim 1, wherein the control information for the camera includes information relating to at least one of pan, tilt, and zoom of the camera.

7. An image distribution method according to claim 1, wherein the information for obtaining the image is obtained by the image reception apparatus via the first network, and the image reception apparatus forms the connection for sending the image to the image reception apparatus, said connection forming comprising dialing a telephone number corresponding to another apparatus, the telephone number being determined in accordance with the information.

8. An image distribution method according to claim 1, wherein the first network is a packet-switched network and the second network is a circuit-switched network.

9. A computer-readable storage medium storing a program that causes a computer to execute a process of distributing an image acquired by a camera on a network, the program comprising steps of:

receiving control information to control the camera from an image reception apparatus via a first network whose bandwidth is not assured; and

sending an image acquired by the controlled camera to the image reception apparatus via a second network whose bandwidth is assured,

wherein the image acquired by the camera is sent to the image reception apparatus via the second network when the image reception apparatus forms via the first network with a control server for sending control information to control the camera, and

wherein the image reception apparatus obtains, via the first network, information for obtaining the image, and forms the connection for sending the image via the second network based on the information.

10. A control server for controlling a camera, comprising:

a receiving device for receiving control information for the camera from an image reception apparatus via a first network whose bandwidth is not assured; and

a sending device for sending an image acquired by the camera via a second network whose bandwidth is assured,

wherein the image acquired by the camera is sent to the image reception apparatus via the second network when the image reception apparatus forms a connection via the first network with the control server for sending control information to control the camera, and

wherein the image reception apparatus obtains, via the first network, information for obtaining the image, and forms the connections for sending the image via the second network based on the information.

11. A control server according to claim 10, wherein the information for obtaining the image is obtained from said control server by the image reception apparatus via the first network, and the image reception apparatus forms the connection for sending the image to the image reception apparatus, the connection forming comprising dialing a telephone number corresponding to said control server, the telephone number being determined in accordance with the information.

12. An image reception apparatus for receiving an image sensed by a camera, comprising:

a sending device for sending control information for the camera via a first network whose bandwidth is not assured; and

a receiving device for receiving the image acquired by the camera via a second network whose bandwidth is assured,

wherein the image acquired by the camera is sent to the image reception apparatus via the second network when the image reception apparatus forms a connection via the first network with a control server for sending control information to control the camera, and

wherein the image reception apparatus obtains, via the first network, information for obtaining the image, and forms the connection for sending the image via the second network based on the information.