Radio frequency identification system
AssigneeCompal Electronics, Inc.
InventorLi-Te Hung
Life of this patent
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Abstract
A radio frequency identification (RFID) system has a reader, a first antenna, a second antenna and a transponder. The first antenna is electrically connected to the reader, and the reader is used to generate a control signal and transmit the control signal through the first antenna. The second antenna is used to receive the control signal. The transponder is integrated into an electronic element of a portable electronic device and is electrically connected to the second antenna. The transponder is arranged to select a data signal according to the control signal and transmit the data signal to the reader through the second and first antennas.
Claims19
A radio frequency identification system, comprising:
- a reader arranged to generate a control signal;
- a first antenna electrically connected to the reader, wherein the reader is arranged to transmit the control signal through the first antenna;
- a second antenna arranged to receive the control signal;
- and
- a transponder integrated into an electronic element of a portable electronic device and electrically connected to the second antenna, the transponder arranged to select a data signal according to the control signal and transmit the data signal to the reader through the second antenna and the first antenna, wherein the transponder comprises:
- a codec arranged to convert the control signal into a control code;
- a memory unit storing a plurality of predetermined codes;
- and
- a control unit electrically connected to the codec and the memory unit, wherein the control unit is arranged to select a data code from the predetermined codes according to the control code, and the codec is arranged to convert the data code into the data signal.
A transponder for a radio frequency identification system, the radio frequency identification system having a reader arranged to generate a control signal and transmit the control signal to the transponder through an antenna set, the transponder characterized by:
- the transponder being integrated into an electronic element of a portable electronic device, wherein the transponder is arranged to select a data signal according to the control signal and transmit the data signal to the reader through the antenna set, and the transponder further comprising:
- a codec arranged to convert the control signal into a control code;
- a memory unit storing a plurality of predetermined codes;
- and
- a control unit electrically connected to the codec and the memory unit, wherein the control unit is arranged to select a data code from the predetermined codes, and the codec is arranged to convert the data code into the data signal.
Dependencies are inferred from the claim text.