Abstract:
A tag of an apparatus to simultaneously identify massive tags according to the present invention may include an analog circuit unit to communicate with a reader through an analog signal and to receive energy via magnetic coupling with the reader. Furthermore, the tag may include a digital circuit unit to be supplied with power from the analog circuit unit. The digital circuit unit may support a sleep mode for the tag to stand by in a low power state after transmitting an identifier (ID) to the reader and a wait mode to control random access to the reader. [Reference numerals] (110) Reader; (130) Recognition area; (140,AA,BB,CC,DD,EE,FF,GG,HH,II) Tag
Abstract:
본 발명은 다량의 태그를 보다 신속하게 인식할 수 있도록 하는 수동형 RFID 시스템 및 방법에 관한 것으로, 상기 리더는 슬롯 명령어와 슬립 명령어를 동시에 생성하여 충돌 및 간섭이 발생하지 않는 서브채널을 파악함과 동시에 이전 슬롯에서 충돌 및 간섭이 발생하지 않는 서브채널을 사용한 태그는 슬립 상태로 진입되도록 하는 프로세서; 상기 슬롯 명령어와 슬립 명령어를 동시에 인코딩 및 크기지터 변조하여 송출하는 송신부; 및 슬롯별로, 다중 서브채널로 수신되는 태그신호를 복조하여 상기 프로세서에 제공하는 수신부를 포함할 수 있다.
Abstract:
PURPOSE: A reader antenna and an RFID electronic shelf including thereof are provided to form the time varying near field on the electronic shelf, thereby improving the recognition rate. CONSTITUTION: A horizontal dipole antenna (1) has the horizontally polarized wave property. A vertical dipole antenna (2) is perpendicularly equipped in the horizontal dipole antenna. The vertical dipole antenna has the vertically polarized wave property. A dipole antenna (3) comprises the horizontal dipole antenna and the vertical dipole antenna. The reader antenna has the circular polarization property.
Abstract:
PURPOSE: A passive RFID system and method are provided to transmit a tag signal with one slot and a frequency band. CONSTITUTION: A processor(110) transits a sub channel in which collision and interference does not generate to a sleep status. A transmitting unit(120) performs the encoding of a command generated in the processor and size jitter modulation. In order that the processor grasps the sub channel by slot in which collision and interference does not generate, a receiving unit(130) performs the acquisition and demodulation of a tag signal by slot received through a plurality of sub channels. The receiving unit offers the processed tag signal to the processor.
Abstract:
본 발명에 따르는 근역장 RFID 리더 안테나는, 단일 유전체층의 접지면에 복수 개의 쌍으로 형성되어, 필드를 방사하는 슬롯, 및 상기 단일 유전체층의 다른 면을 형성하되 종단이 개방(open-end)되어, 상기 슬롯을 급전하는 마이크로스트립 라인을 포함하는 것을 특징으로 한다. RFID, 근역장, 슬롯, 마이크로스트립 라인
Abstract:
PURPOSE: A synchronization apparatus for precisely decoding the reception signal within a phase jitter modulation tag and a tag including the same are provided to determine the decoding starting point of payload data by using a MFM(Modified Frequency Modulation) flag and a correlator. CONSTITUTION: A plurality of correlators(120, 150, 170) implements a correlation calculation for a reception signal which is phase jitter modulated with a template of an internal match filter having the same shape with a part of the frequency modulation flag. An optimal signal selector(100) divides the signal received through a single path into various paths.
Abstract:
PURPOSE: A near field RFID reader antenna is provided to efficiently and easily recognize a plurality of tags by uniformly forming the size and a phase of an electric filed formed on a slot and forming a ground surface of a single dielectric layer. CONSTITUTION: A slot(200) is formed on the ground surface of a single dielectric layer(400). The slot radiates a filed. A microstrip line(100) is formed on the other surface of the single dielectric layer and suddenly changes the slot by opening an end side. A uniform near field is formed on a wide range by rapidly changing the slot.
Abstract:
A channel zone production method and a tag identifying method for using a channel zone in a radio frequency identifying for forming a channel zone sharing the channel selected by an arbitration reader are provided to improve the recognition rate of the RFID tag by identifying the tag through a plurality of the channel zone. One of a plurality of channels is selected by a reader(S101). The reader determines the presence of a channel zone sharing the selected channel according to predetermined sync signal(S103). In case the channel zone exists, it determines the reader is in the channel zone(S107). In case it is classified into the channel zone, the channel zone is formed with the arbitration reader for the channel zone(S109).