公开(公告)号：EP2933757A4

公开(公告)日：2016-07-13

申请号：EP13863384

申请日：2013-11-28

Applicant: SONY CORP

Inventor： MASUDA KOTARO ,  AKAIDA TETSURO

IPC: H04B5/00

CPC classification number: G06K7/10297 ,  G06K7/10366 ,  H04B5/0062 ,  H04B5/0081

Abstract: The present technology relates to a communication device, a communication method, an integrated circuit, and an electronic instrument, which are capable of reducing a manufacturing cost of a communication device having both functions of an RF tag and reader/writer or an electronic instrument equipped with the communication device. A transmitting circuit transmits transmission data to a communication target by performing load modulation of changing an impedance of an antenna unit according to the transmission data using a first carrier generated in the antenna unit when the transmitting circuit operates in a first operation mode in which the transmitting circuit operates as an RFID reader/writer is performed, and the transmitting circuit transmits the transmission data to the RFID reader/writer by performing the load modulation of changing the impedance of the antenna unit according to the transmission data using a second carrier received by the antenna unit when the transmitting circuit operates in a second operation mode in which the transmitting circuit operates as a communication target of the RFID reader/writer is performed. For example, the present technology can be applied to a communication device having both functions of a reader/writer and an RF tag or an electronic instrument equipped with the communication device.

公开(公告)号：JP2010170248A

公开(公告)日：2010-08-05

申请号：JP2009010769

申请日：2009-01-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： MASUDA KOTARO ,  YAMADA TAKAYUKI

IPC: G06K19/07 ,  H04B5/02

Abstract: PROBLEM TO BE SOLVED: To achieve a stable reception state while suppressing increase of a circuit scale. SOLUTION: When the voltage supplied as a power supply voltage is larger than a predetermined voltage, by consuming the power equivalent to the excess voltage more than the predetermined voltage as a current, a shunt circuit 34 generates a constant power supply voltage. A current-voltage conversion circuit 36 converts the current consumed by the shunt circuit 34 into a control voltage of a voltage value according to its current value. A variable capacitor 37 is connected with a resonant circuit in parallel, and the capacitance value continuously changes according to the voltage value of the control voltage. The present invention is applicable to a contactless IC card, for example. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了在抑制电路规模的增加的同时实现稳定的接收状态。 解决方案：当作为电源电压提供的电压大于预定电压时，通过消耗等于超过预定电压的过电压的功率作为电流，分流电路34产生恒定的电源电压。 电流 - 电压转换电路36将分流电路34消耗的电流根据其电流值转换为电压值的控制电压。 可变电容器37与谐振电路并联连接，电容值根据控制电压的电压值连续变化。 本发明可应用于例如非接触IC卡。 版权所有（C）2010，JPO＆INPIT