Patent ID: 9268977
Filing Date: 2016-02-23
CPC Classification: G06K,G06Q

Claim Text:
1. A method for transmitting information in an electronic price label system which includes at least a base station and a plurality of electronic labels for transferring information between the base station and electronic labels, said method comprising: transmitting a first message from a base station to a plurality of electronic labels, the first message containing at least identification information of one electronic label, receiving the first message at the electronic label, recognizing the identification information in the first transmitted message by the electronic label, transmitting a second message from the base station to the electronic label, receiving the second message and sending an acknowledgement message to the second message from the electronic label with an unspecified modulation frequency in a certain frequency range, wherein the base station is adapted to search a predefined frequency range to find acknowledgement messages sent by the electronic label and to identify a response from a given display of the electronic label based upon a given time period after transmitting the second message to the electronic label.