Video delivery systems using wireless cameras

• US 9,282,297 B2
• Filed: 01/23/2009
• Issued: 03/08/2016
• Est. Priority Date: 01/24/2008
• Status: Active Grant

• Current Assignee: Axis AB (Canon Inc.)
• Original Assignee: MicroPower Technologies, Inc.
• Inventors: Wallace, Bradford S., Siann, Jon
• Primary Examiner(s): Chang, Jungwon
• Application Number:
  US12/359,259
• Publication Number:
  US 20090189981A1
• Time in Patent Office: 2,601 Days
• Field of Search: 348/151, 348/158, 348/143, 348/14.11
• US Class Current: 1/1
• CPC Class Codes: H04N 21/4223 Cameras H04N23/00 takes precedence
• CPC Class Codes: H04N 21/6181 involving transmission via a mobile phone network arrangements for providing broadcast or conference services to substation in data switching networks in combination with wireless systems H04L12/189; wireless uplink channel access H04W74/004
• CPC Class Codes: H04N 21/6373 for rate control , e.g. request to the server to modify its transmission rate flow control in packet networks H04L47/10
• CPC Class Codes: H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source
• CPC Class Codes: H04N 7/185 from a mobile camera, e.g. for remote control
• CPC Class Codes: H04N 7/188 Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position signal generation from motion picture films H04N5/253
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

Systems, apparatuses, and techniques for video delivery can include one or more of the following: a wireless camera arranged in a wearable form factor comprising a battery to provide energy, and configured to generate a video feed, and a base station in wireless communication with the wireless camera and configured to receive the video feed from the wireless camera and process the video feed, and a video portal device communicatively coupled with the base station and configured to receive the processed video feed from the base station and deliver at least a portion of the processed video feed to one or more remote clients. A base station can reserve a wireless channel for the wireless camera for a video transmission.

Claims

1. A wireless camera comprising:

an image sensor for capturing video;

a transmitter to transmit video to a video portal device over a wireless channel; and

video analytics software, the analytics software operating in a first mode of operation and a second mode of operation;

wherein the analytics software switches from the first mode of operation to the second mode of operation upon an occurrence of a trigger event;

wherein when in the first mode of operation, the transmitter transmits video at a slower bit rate;

wherein when in the second mode of operation, the transmitter transmits video at a faster bit rate; and

wherein the second mode of operation provides higher video quality than the first mode of operation.

2. The wireless camera of claim 1, wherein a burst transmission unit of the wireless camera comprises multiple output circuits with respective different power amplifier bias settings, wherein each of the output circuits comprise a power amplifier and antenna matching circuitry.

3. The wireless camera of claim 1, wherein the burst transmission unit is configured to select one of the output circuits for data transmission based a wireless link condition.

4. The wireless camera of claim 1, wherein the transmitter comprises a burst transmission unit to transmit information corresponding to burst periods, to a base station, wherein the burst transmission unit generates orthogonal frequency division modulation (OFDM) transmission symbols.

5. The wireless camera of claim 1, wherein the burst transmission unit generates the transmission symbols corresponding to one of 24 Mbps, 36 Mbps, 48 Mbps, 54 Mbps, and 65 Mbps data rates.

6. The wireless camera of claim 1, wherein the burst transmission unit generates the transmission symbols corresponding to a data rate that exceeds 22 Mbps.

7. The wireless camera of claim 1, wherein the trigger event includes a sound detection, an infrared motion detection, an ultrasonic detection, a relay switch, a micro switch, or a radio signaling circuitry.

8. The wireless camera of claim 7, wherein the sound detection trigger event includes a detection of a shock wave, a breaking of glass, or a shattering of glass.

9. The wireless camera of claim 1, wherein the trigger event is video processing based movement detection.

10. The wireless camera of claim 1, wherein when in the first mode of operation, the image sensor captures the video at a slower frame rate.

11. The wireless camera of claim 1, wherein when in the second mode of operation, the image sensor captures the video at a faster frame rate.

12. The wireless camera of claim 1, wherein the video portal device is located in a base station.

13. The wireless camera of claim 1, wherein the trigger event is initiated by a user input.

14. The wireless camera of claim 13, wherein the user input is provided to the camera via a base station.

15. The wireless camera of claim 1, wherein the wireless camera pulses a high efficient infrared or visible light LED synchronized to an image capture frequency and phase.

16. The wireless camera of claim 1, wherein the transmitter is a radio.

17. A method of video delivery comprising:

obtaining video from a wireless camera;

sending the video to a video portal device that is separate from the camera, the video portal device being in wireless communication with the camera;

receiving the video in a first mode of operation and a second mode of operation;

wherein receiving switches from the first mode of operation to the second mode of operation upon an occurrence of a trigger event;

wherein when in the first mode of operation, the transmitter transmits video at a slower bit rate;

wherein when in the second mode of operation, the transmitter transmits video at a faster bit rate; and

wherein the second mode of operation provides higher video quality than the first mode of operation.

18. The method of video delivery of claim 17, wherein the trigger event includes a sound detection, an infrared motion detection, an ultrasonic detection, a relay switch, a micro switch, or a radio signaling circuitry.

19. The method of video delivery of claim 17, wherein the trigger event is a video processing based movement detection.

20. The wireless camera of claim 17, wherein when in the first mode of operation, the image sensor captures the video at a slower frame rate.

21. The wireless camera of claim 17, wherein when in the second mode of operation, the image sensor captures the video at a faster frame rate.

22. The method of video delivery of claim 17, wherein the wireless camera pulses a high efficient infrared or visible light LED synchronized to an image capture frequency and phase.

23. The method of video delivery of claim 17, wherein the transmitter is a radio.