Methods and apparatus for error detection and correction of an electronic shelf label system communication error

Abstract

In one aspect, the ESL system automatically detects ESL communication errors which result in incorrect data in the ESL's registers, and then automatically takes corrective action to update the ESL's memory with the correct data. In one aspect, the host computer transmits a register update message to an ESL. If a negative acknowledgment message or no response is received, then the host computer resends the register update message, or takes other appropriate corrective action. If the host computer receives a positive acknowledgement message, the host computer then automatically transmits one or more messages to the ESL to verify the contents of the ESL's registers to ensure that a positive acknowledgement was actually transmitted.