US 9,792,468 B2Granted

Time slot communication system

AssigneeImagotag GmbH

InventorsAndreas Röβl, Andreas Hechenblaickner, Christian Frieβnegg

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Abstract

A system, comprising a communication station for communicating with a number of radio tags in a time slot communication process, in which a number of time slots per time slot cycle in a repeating sequence are available for communication, and each time slot is characterized by a distinct time slot symbol, wherein the communication station is designed to send out a synchronization data signal comprising the time slot symbol for the currently present time slot, and wherein a radio tag is designed for changing from a sleep state into an active state at a wakeup instant, and for receiving the synchronization data signal in the active state and, if the received time slot symbol indicates a time slot intended for it, for defining a new wakeup instant corresponding to the next appearance of the time slot intended for it in a time slot cycle that follows the currently present time slot cycle.

Claims20

Dependent claims

A system (1), exhibiting

a communication station (3, 4) for communicating with a number of radio tags (7-14) in a time slot communication process, in which a number of time slots (Z1-ZN) per time slot cycle in a repeating sequence are available for communication, and each time slot (Z1-ZN) is characterized by a distinct time slot symbol (ZS1-ZSN), wherein the communication station is designed to send out a synchronization data signal (SD) exhibiting the time slot symbol (Z1-ZN) for the currently present time slot (Z1-ZN), and wherein
a radio tag (7-14) is designed:
for changing from a sleep state (S) into an active state (E) at a wakeup instant (TA1), and
for receiving the synchronization data signal (SD) in the active state (E) and,
if the received time slot symbol (ZS1-ZSN) indicates a time slot (Z1-ZN) intended for it, for defining a new wakeup instant (TA2) corresponding to the next appearance of the time slot (Z1-ZN) intended for it in a time slot cycle that follows the currently present time slot cycle.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/119,259Filed 20 Feb 2014
Published: US 2017/0011238 A112 Jan 2017
Granted: 17 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06K 7/10029
Resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.: the collision being…
G06Q 30/02
Commerce: marketing; Price estimation or determination; Fundraising
Y02D 30/70
Reducing energy consumption in communication networks: in wireless communication networks
G06K
Graphical data reading