RFID SYSTEM INCLUDING MEMORY FOR CORRECTING FAIL CELL AND METHOD FOR CORRECTING FAIL CELL USING THE SAME

摘要

PPROBLEM TO BE SOLVED: To improve yield of an RFID system by comparing data of a unit cell for each group and correcting effectively cell data distributed randomly in memories in RFID in a state in which the same data are written in many unit cells belonging to one group. PSOLUTION: Such technology is disclosed that a failed cell correcting circuit is included in a memory in the RFID system, and yield of the RFID system is improved by correcting effectively cell data distributed randomly concerning the RFID system including a memory which can correct a failed cell and its failed cell correcting method. Therefore, a predetermined number of unit cells are separated into one memory group, and the same data are stored in each memory group at a write mode, At a read mode, the cell data of the selected memory group are compared, the same data are identified as effective data to improve yield of the RFID system. PCOPYRIGHT: (C)2007,JPO&INPIT