US 10,332,089 B1Granted

Data synchronization system

AssigneeAmazon Technologies, Inc.

InventorsYasser Baseer Asmi, Frank Florian Liberato, Jr., Daniel Bibireata, Bradley David Volen, Prafulla Jinendra Masalkar, Todd Nelson Schoepflin

Life of this patent

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Abstract

Frames of sensor data may be obtained from many sensors arranged throughout a facility. These frames may be time synchronized to support further processing. For example, frames containing image data obtained at about the same time from many cameras within the facility may be used to create an aggregate or “stitched” view of the facility at that time. The synchronization may involve storing the frames from several sensors in buffers. A time window may be specified and used in conjunction with timestamps of the frames to select a set of sensor data from the buffers that are deemed to be synchronized data. The synchronized data may then be used for further processing.

Claims21

Dependent claims

A system comprising:

a plurality of cameras within a facility;
a first memory storing a first sequence of computer-executable instructions;
and
a hardware processor to execute the first sequence of computer-executable instructions in an order set forth to:
access a plurality of feeds of frames, each feed sent from one of the plurality of cameras, each frame including image data and a timestamp;
store, in a separate buffer for each camera, the frames from the each camera, with the frames in each separate buffer ordered by the timestamp of the frames;
determine a first set of frames including an oldest frame from each of the separate buffers;
designate a time window extending from a prior oldest point in time to a timestamp value of a newest frame in the first set of frames;
discard from the separate buffers any frames having timestamps before the prior oldest point in time of the time window;
determine, for the each separate buffer, a frame within the time window that has a timestamp value closest to a newest point of the time window;
and
designate as synchronized data a frame from each of the separate buffers that is within the time window and has the timestamp value closest to the newest point of the time window.

9 more elements

A system comprising:

a sensor cluster comprising a plurality of sensors;
a memory, storing a first sequence of computer-executable instructions;
and
a hardware processor to execute the first sequence of computer-executable instructions in an order set forth to:
access a plurality of feeds of frames, wherein each feed comprises data from a different sensor in the sensor cluster;
determine a first set of frames including an oldest frame in the each feed;
determine a timestamp value of a newest frame in the first set of frames;
designate a newest point of a time window as the timestamp value of the newest frame in the first set of frames;
determine, for the each feed, a frame within the time window, wherein the frame has a newest timestamp;
and
designate as synchronized data the frame from the each of the feeds having the newest timestamp.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/674,487Filed 31 Mar 2015
Granted: 25 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

G06Q 20/203
Point-of-sale [POS] network systems: inventory monitoring
G06K 17/0022
Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g.…:…
G06Q 10/087
Logistics, e.g. warehousing, loading or distribution; Inventory or stock management: inventory or stock management, e.g. order filling,…
G06Q 10/0874
Inventory or stock management, e.g. order filling, procurement or balancing against orders: inventory fulfillment