System and method for updating electronic shelf labels and updating apparatus and method of an electronic shelf label

• Main Authors: LEE, YUEH-FENG, LEE, YANG-JUNG, WU, CHUN-HSIEN, TAI, YUANU
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2014
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DISPLAY; EDUCATION; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS; SEALS

A system for updating electronic shelf labels (ESLs) comprises multiple ESLs and a gateway connected to the multiple ESLs to update data of the multiple ESLs. Each ESL comprises a transceiver containing a medium condition detector to detect whether other ESL(s) is updated at the time slot, a controller, a memory and a random number generator selecting one of multiple time slots of a frame randomly when an ESL update procedure starts, wherein the time slot corresponds to an index stored in the memory by the controller. The ESL is updated at this time slot when no other ESL(s) is updated at the time slot. When other ESL(s) is updated at the time slot, the controller enables the random number generator to select another time slot randomly from next time frame.