Motion detection for A/V recording and communication devices

• US 10,068,610 B2
• Filed: 11/23/2016
• Issued: 09/04/2018
• Est. Priority Date: 12/04/2015
• Status: Active Grant

• Current Assignee: A9.com Incorporated (Amazon.com, Inc.)
• Original Assignee: Amazon Technologies, Inc. (Amazon.com, Inc.)
• Inventors: Jeong, Changsoo
• Primary Examiner(s): HUNTER, MISHAWN N
• Application Number:
  US15/359,772
• Publication Number:
  US 20170160144A1
• Time in Patent Office: 650 Days
• CPC Class Codes: G01J 1/4204 with determination of ambient light solar light G01J2001/4266
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 5/0025 Living bodies ear thermometers G01J5/0011; detecting, measuring or recording for diagnostic purposes A61B5/00
• CPC Class Codes: G01J 5/025 Interfacing a pyrometer to an external device or network; User interface
• CPC Class Codes: G01J 5/026 Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control
• CPC Class Codes: G01K 3/10 in respect of time, e.g. reacting only to a quick change of temperature
• CPC Class Codes: G08B 13/19 using infrared-radiation detection systems G08B13/194 takes precedence
• CPC Class Codes: G08B 13/19656 Network used to communicate with a camera, e.g. WAN, LAN, Internet
• CPC Class Codes: G08B 13/19695 Arrangements wherein non-video detectors start video recording or forwarding but do not generate an alarm themselves
• CPC Class Codes: G08B 29/185 Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
• CPC Class Codes: G11B 20/00891 embedded in audio data
• CPC Class Codes: G11B 20/00905 multiple watermarks used in combination
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10537 Audio or video recording
• CPC Class Codes: G11B 31/006 with video camera or receiver
• CPC Class Codes: H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 23/64 Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 7/186 : Video door telephones

Abstract

Audio/video (A/V) recording and communication devices according to the present embodiments comprise a processor, a motion sensor, and a camera. In various embodiments, the A/V recording and communication devices are configured to reduce latency and/or to reduce false positive indications of motion.

Claims

1. A method for an audio/video (A/V) recording and communication device including a processor, a motion sensor, and a temperature sensor, the method comprising:

measuring, by the temperature sensor, temperature during an interval;

calculating, by the processor, a rate of change in the temperature during the interval;

comparing, by the processor, the rate of change in the temperature during the interval to a threshold value; and

ignoring, by the processor, any signals from the motion sensor that were generated during the interval when the rate of change in the temperature during the interval is greater than the threshold value.

2. The method of claim 1, wherein the motion sensor comprises at least one passive infrared (PIR) sensor.

3. The method of claim 1, wherein the A/V recording and communication device comprises one of a doorbell or a security camera.

4. The method of claim 1, wherein the A/V recording and communication device further includes a battery, and wherein the measuring the temperature during the interval comprises measuring the temperature of the battery of the A/V recording and communication device during the interval.

5. The method of claim 1, wherein the threshold value comprises 1°

C./min.

6. An audio/video (A/V) recording and communication device, comprising:

a processor;

a motion sensor;

a temperature sensor; and

a computer-readable medium storing instructions that, when executed by the processor, cause the processor to perform operations comprising;

measuring, by the temperature sensor, temperature during an interval;

calculating, by the processor, a rate of change in the temperature during the interval;

comparing, by the processor, the rate of change in the temperature during the interval to a threshold value; and

ignoring, by the processor, signals from the motion sensor generated during the interval when the rate of change in the temperature during the interval is greater than the threshold value.

7. The A/V recording and communication device of claim 6, wherein the motion sensor comprises at least one passive infrared (PIR) sensor.

8. The A/V recording and communication device of claim 6, wherein the A/V recording and communication device comprises one of a doorbell or a security camera.

9. The A/V recording and communication device of claim 6, further comprising a battery, and wherein the measuring the temperature during the interval comprises measuring the temperature of the battery of the A/V recording and communication device during the interval.

10. The A/V recording and communication device of claim 6, wherein the threshold value comprises 1°

C./min.