Video over ethernet

• US 8,208,033 B2
• Filed: 07/09/2009
• Issued: 06/26/2012
• Est. Priority Date: 07/11/2008
• Status: Active Grant

• Current Assignee: Axis AB (Canon Inc.)
• Original Assignee: Axis AB (Canon Inc.)
• Inventors: Lundberg, Stefan, Hansson, Jon
• Primary Examiner(s): WHIPKEY, JASON T
• Application Number:
  US12/500,249
• Publication Number:
  US 20100007750A1
• Time in Patent Office: 1,083 Days
• Field of Search: 725/105, 348/211.3, 370/297, 370/529, 375/216
• US Class Current: 348/211.3
• CPC Class Codes: G08B 13/19656 Network used to communicate with a camera, e.g. WAN, LAN, Internet
• CPC Class Codes: H04N 23/65 Control of camera operation in relation to power supply
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source

Abstract

The present invention relates to a network enabled digital video camera arranged to be connected to a digital network. The network enabled digital video camera includes a digital network module arranged to transmit and receive digital signals, an input/output port being an electrical connector and being connected to the digital network module, and an analog video generator arranged to output an analog video signal. The input/output port connected to the digital network module is also connected to the analog video generator. The present invention also relates to an adaptor used to connect the network enabled digital video camera to an off-the-shelf video preview device.

Claims

1. A network enabled digital video camera arranged to be connected to a digital network, the network enabled digital video camera comprising:

an image sensor arranged to capture digital images;

an image processor to which the captured digital images are forwarded, the image processor being arranged to render digital video images from the captured digital images;

a digital network module arranged to transmit and receive digital signals, wherein the digital network module is arranged to transmit and receive basic digital signals that are not additionally modulated by a carrying wave using an input/output port;

the input/output port being an electrical connector and being connected to the digital network module; and

an analog video generator, connected to the image processor, arranged to convert the rendered digital video images into an analog video signal and to output the analog video signal;

wherein the input/output port connected to the digital network module is also being connected to the analog video generator,

wherein the analog video generator is arranged to generate a basic analog video signal that is not additionally modulated by a carrying wave and transmit the generated basic analog video signal using an input/output port;

wherein an input and/or output line from the digital network module is connected to an output line from the analog video generator, thereby an analog video signal and a digital signal are transmitted on the same signaling wire.

2. The network enabled digital video camera according to claim 1, wherein the input/output port is connected to an electrical power receiving unit being arranged to receive power via the input/output port, and being arranged to power the network enabled digital video camera.

3. The network enabled digital video camera according to claim 1, further comprising an enable/disable unit arranged to enable/disable the sending of the signal from the analog video generator.

4. The network enabled digital video camera according to claim 3, wherein the enable/disable unit automatically disables the analog video generator when digital signals are transmitted through the input/output port.

5. The network enabled digital video camera according to claim 3, wherein the enable/disable unit automatically enables the analog video generator when no digital signals are transmitted through the input/output port.

6. The network enabled digital video camera according to claim 3, wherein the enable/disable unit is arranged to be enabled/disabled in response to signals received via the digital network.

7. The network enabled digital video camera according to claim 1, wherein the input/output port is a network port.

8. An adaptor, comprising:

a first modular input/output port arranged to receive a modular connector and to carry digital network traffic in the form of basic digital signals and to carry basic analog video signals through the same signal wires, wherein the basic digital signals are digital signals that are not additionally modulated by a carrying wave and the basic analog video signals are analog video signals that are not additionally modulated by a carrying wave;

a second modular input/output port, connected to the first modular input/output port, arranged to receive a modular connector and to carry digital network traffic to and from the first input/output port;

a third output port, connected to the first input/output port, arranged to carry analog video signals from the first input/output port, wherein the third output port is an analog video output port; and

a separation unit, connected to the first input/output modular port and the third output port, arranged to separate the digital network traffic from the analog video signal, wherein the separation unit is based on a transformer.

9. The adaptor according to claim 8, wherein the third output port is an analog video output port that includes at least one of a BNC connector, an RCA connector and a mini-DIN connector.

10. The adapter according to claim 8, further comprising a battery connected to the first input/output port and arranged to deliver power though said first input/output port.

11. The adaptor according to claim 8, wherein the transformer is a 10/100 BASE-TX transformer.