Abstract:
본 발명은 LED 전원용 압전회로부를 포함하는 전자식 카드에 관한 것으로, LED를 포함하는 박형 전자회로부와, 상기 전자회로부에 전원을 공급하는 압전회로부를 포함하는 플렉서블 인쇄회로기판(Flexible Printed Circuit Board)과, 상기 플렉서블 인쇄회로기판 상부에 형성되며, 상기 LED의 발광 빛을 측면으로 유도하는 도광 패턴을 포함하는 투명 코어 수지층 및 상기 투명 코어 수지층 상부에 형성되는 상측 커버층을 포함하는 전자식 카드를 제공하거나, 상기 카드의 상면 또는 하부면으로도 LED의 발광 빛이 투과될 수 있도록 하는 전자식 카드를 제공하여, 접촉식 또는 비접촉식 전자식 카드, 금융카드, 교통카드, RFID 태그 카드, NID카드(National Identification Card) 등 각종 카드에 문자, 도형, 그림, 상표 및 로고 중 선택된 하나 이상의 패턴 다양하게 나타낼 수 있으며, 우수한 디자인 효과 및 광고 효과를 부여할 수 있도록 하는 발명에 관한 것이다.
Abstract:
A semiconductor device capable of wireless communication which has low power consumption in a step for decoding an encoded signal to obtain data is provided. The semiconductor device includes an antenna configured to convert received carrier waves into an AC signal, a rectifier circuit configured to rectify the AC signal into a DC voltage, a demodulation circuit configured to demodulate the AC signal into an encoded signal, an oscillator circuit configured to generate a clock signal having a certain frequency by supply of the DC voltage, a synchronizing circuit configured to generate a synchronized encoded signal by synchronizing the encoded signal obtained by demodulating the AC signal with the clock signal, a decoder circuit configured to decode the synchronized encoded signal into a decoded signal, and a register configured to store the decoded signal as a clock (referred to as a digital signal).
Abstract:
An apparatus, a method and a computer program, the apparatus comprising: an interface configured to detect a first electrical signal, the first electrical signal being provided by a transceiver; secure transaction circuitry having a first power state and a second power state, the secure transaction circuitry being configured, when in the second power state, to perform a transaction, using the transceiver, with a further apparatus; memory circuitry having power states; and control circuitry configured, in response to detecting the first electrical signal, to control the secure transaction circuitry to switch from being in the first power state to being in the second power state, without changing a power state of the memory circuitry.
Abstract:
A near field RF communicator has an antenna circuit (102) to couple with the H field of an RF magnetic field and a power supply deriver (301) to derive a rectified auxiliary power supply from the received magnetic field. Rectification may be performed using an actively switched rectifier (502) having a passive mode of operation. A sub regulation system (506) is provided to regulate the auxiliary power supply to inhibit the possibility of temporally varying power requirements of the near field RF communicator or its host causing an apparent load modulation of a signal that is transmitted or received by the communicator.
Abstract:
Exemplary embodiments are directed to wireless power transfer including generating an electromagnetic field at a resonant frequency of a transmit antenna to create a coupling-mode region within a near-field of the transmit antenna. A receive antenna placed within the coupling-mode region resonates at or near the resonant frequency. The receive antenna extracts energy from a coupling between the two antennas. Signaling from the receive antenna to the transmit antenna is performed by generating a first power consumption state for the receive antenna to signal a first receive signal state and generating a second power consumption state for the receive antenna to signal a second receive signal state. Signaling from the transmit antenna to the receive antenna is performed by enabling the resonant frequency on the transmit antenna to signal a first transmit signal state and disabling the resonant frequency on the transmit antenna to signal a second transmit signal state.
Abstract:
Exemplary embodiments are directed to wireless power transfer. A transmitting device or a receiving device for use in a wireless transfer system may be equipment or a household appliance. The transmitting device includes a transmit antenna to wirelessly transfer power to a receive antenna by generating a near field radiation within a coupling-mode region. An amplifier applies an RF signal to the transmit antenna. A presence detector detects a presence of a receiver device within the coupling-mode region. A controller adjusts a power output of the amplifier responsive to the presence of a receiver device. The presence detector may also detect a human presence. The power output may be adjusted at or below the regulatory level when the presence signal indicates human presence and above a regulatory level when the presence signal indicates human absence.
Abstract:
In embodiments of the present invention improved capabilities are described for a radio frequency identification (RFID) tag substrate for the mounting of a plurality of RF network nodes. In this way, data communications among the plurality of RF network nodes may be coordinated such that the plurality of RF network nodes act as a single RFID tag when interrogated by an RFID reader, and where power may be shared amongst the plurality of RF network nodes.