Abstract:
PROBLEM TO BE SOLVED: To provide an encoding method for two-dimensional optical identification (2D-OID), which uniformly distributes encoding identification bodies, so as to bear more pieces of encoding information. SOLUTION: The 2D-OID includes a positioning block 101 and multiple data coding blocks 102-109 around the positioning block. Each of the positioning block and the data coding blocks includes multiple dots arranged in an N×M matrix, where N, M are natural numbers. An asymmetric-shaped specific pattern formed of a row and a column of the dots in the positioning block is filled up. At least one dot in a center of the data coding blocks is filled up. The remaining dots of each of the data coding blocks are selectively filled up to thereby represent a binary code. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A radio frequency identification communication method for collision reduction with low power consumption and radio frequency identification communication system using the same are provided in the present invention. The radio frequency identification communication method includes the steps of: setting different delay periods according to different RFID tags; in each preset time, enabling a RFID reader and detecting whether a RFID tag is on the RFID reader; detecting whether there is only one RFID tag on the RFID reader; when two or more RFID tags on the RFID reader are detected in a specific time slot, entering a suspend mode to stop providing RF power such that the RFID tags perform power on reset when the reader is enabled next time.