US 10,853,435 B2 · Systems and methods for aligning event data

Abstract

System and methods for aligning event data recorded by recording devices. Recording devices create, transmit, and store alignment data. Alignment data created by a recording device is stored in the memory of the recording device with a time that is maintained by the recording device and that is relative to the time of event data recorded by the recording device that creates the alignment data. Recording devices further receive and store transmitted alignment data. Alignment data received by a recording device is stored in the memory of the recording device with a time that is maintained by the receiving recording device and that is relative to the time of event data recorded by the recording device that creates alignment data. Stored alignment data may be used to align the playback of event data of devices that have the same alignment data.

Claims20

Dependent claims

A method performed by a first body-worn camera of a plurality of body-worn cameras, the method comprising:

tracking time independent of each other body-worn camera of the plurality of body-worn cameras;
recording video data of an event, the plurality of body-worn cameras positioned at a location of the event within wireless transmission range of each other, the video data stored in a memory of the first body-worn camera;
broadcasting an alignment beacon while recording the video data, the alignment beacon includes an alignment data, the alignment data includes a serial number of the first body-worn camera, the alignment data does not include any indication of the tracked time;
storing the alignment data and a first time in the memory of the first body-worn camera, the first time is a time of the storing of the alignment data in the memory of the first body-worn camera as measured by the tracked time, the first time relates the alignment data to the video data being recorded at the first time;
wherein:
a second body-worn camera of the plurality of body-worn cameras receives the alignment beacon;
the second body-worn camera stores the alignment data in a memory of the second body-worn camera with a second time as measured by the second body-worn camera independent of the tracked time of the first body-worn camera;
and
the alignment data relates the second time to the first time and thereby relates the video data recorded by the first body-worn camera to the second time.

6 more elements

A method performed by a first recording device and a second recording device for relating a first event data recorded by the first recording device to a second event data recorded by the second recording device, the first event data and the second event data record an event, the method comprising:

while the first recording device records the first event data in a first memory of the first recording device:
transmitting by the first recording device an alignment beacon, the alignment beacon includes an alignment data, the alignment data includes a serial number of the first recording device, the alignment data does not include any indication of time as tracked by the first recording device;
and
storing by the first recording device the alignment data and a first time in the first memory, the first time relates the alignment data to a time of recording a portion of the first event data by the first recording device, the first time tracked by the first recording device independent of the second recording device;
and
while the second recording device records the second event data in a second memory of the second recording device:
receiving by the second recording device the alignment beacon;
and
storing by the second recording device the alignment data and a second time in the second memory, the second time relates the alignment data to a time of recording a portion of the second event data by the second recording device, the second time tracked by the second recording device independent of the first recording device;
wherein:
the alignment data relates the first time stored by the first recording device to the second time stored by the second recording device, whereby the alignment data relates the first event data to the second event data.

8 more elements

while the first recording device records the first event data in a first memory of the first recording device:
periodically transmitting by the first recording device an alignment beacon, each alignment beacon includes a respective alignment data, each respective alignment data includes a serial number of the first recording device and a sequence number, the sequence number of each respective alignment data is different, each respective alignment data does not include any indication of time as tracked by the first recording device;
and
for each alignment beacon, storing by the first recording device the respective alignment data of the alignment beacon and a respective first time in the first memory, the respective first time relates the respective alignment data to a respective time of recording a respective portion of the first event data by the first recording device, the respective first time tracked by the first recording device independent of the second recording device;
and
while the second recording device records the second event data in a second memory of the second recording device:
receiving by the second recording device each alignment beacon transmitted by the first recording device;
and
for each alignment beacon, storing by the second recording device the respective alignment data of the alignment beacon and a respective second time in the second memory, the respective second time relates the respective alignment data to a respective time of recording a respective portion of the second event data by the second recording device, the respective second time tracked by the second recording device independent of the first recording device;
wherein:
the respective alignment data of each alignment beacon relates the respective first time stored by the first recording device for the alignment beacon to the respective second time stored by the second recording device for the alignment beacon.

8 more elements

Dependencies are inferred from the claim text.

Systems and methods for aligning event data

Life of this patent

Systems and methods for aligning event data

Life of this patent

Abstract

Claims20