US 11,696,247 B2Granted

Clock synchronization and data redundancy for a mesh network of user devices

AssigneesGetac Technology Corporation, WHP Workflow Solutions, Inc.

InventorsThomas Guzik, Muhammad Adeel

Life of this patent

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Abstract

A hub may receive event data captured by a body-worn device and store the event data in a memory of the hub. The event data is then backed up from the hub to a memory of an additional hub communicatively connected to the hub. A copy of event data for a predetermined period of time as included in the event data is then transferred from the memory of the hub to a data store of a network operations center (NOC). In response to the transfer being complete, the hub may delete the event data for the predetermined period of time, send a first command to the additional hub directing the additional hub to delete a backup of the event data for the predetermined period of time, or send a second command to the body-worn device directing the body-worn device to delete the event data for the predetermined period of time.

Claims20

Dependent claims

One or more non-transitory computer-readable media of a hub storing computer-executable instructions that upon execution cause one or more processors to perform acts comprising:

determining whether a time discrepancy exists between a first clock of a user device and a second clock of a hub when the user device is communicatively connected to the hub, the determining includes the hub sending a request for a current date and time tracked by the first clock of the user device to the user device and comparing the current date and time received from the user device to an additional date and time tracked by the second clock of the hub to determine the time discrepancy;
in response to determining that the time discrepancy exists, recording the time discrepancy between the first clock and the second clock in a clock discrepancy log maintained for the user device and then synchronizing the first clock of the user device with the second clock of the hub;
and
in response to determining that the time discrepancy does not exist, making a further determination as to whether the time discrepancy exists when a predetermined amount of time as measured by the second clock of the hub has passed or when the user device has communicatively disconnected or reconnected to the hub.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/354,835Filed 22 Jun 2021
Published: US 2022/0408391 A122 Dec 2022
Granted: 4 Jul 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 56/0055
Synchronisation arrangements: determining timing error of reception due to propagation delay
G06F 1/04
Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00: generating or distributing clock signals or signals derived directly therefrom
G06F 1/12
Generating or distributing clock signals or signals derived directly therefrom: synchronisation of different clock signals provided by a plurality…
G06F 1/163
For portable computers: wearable computers, e.g. on a belt