The present invention relates to a transponder tag (10) that is operable by a mobile telephone, a mobile telephone for operating such a transponder tag (10), a method of operating the transponder tag (10), and a method for detecting the presence of a portable object. The transponder tag comprises a receiving unit (20) for receiving a wireless input signal. The transponder tag (10) is configured to obtain energy (EG) from the received input signal and to use the energy (EG) obtained from the input signal for transmitting by way of a wireless short-range connection a wireless output signal (SSR) that corresponds to a tag information (ITG) of the transponder tag (10). The receiving unit (20) is configured to receive a wireless input signal (STUP) at a frequency of at least one uplink band of a mobile telephone network. In this way, radiation energy of the mobile phone is used to achieve an energy-efficient and reliable operation of the transponder tag as long as the latter is located within a short distance of the mobile phone. This is useful for numerous applications. For example a person may use his/her mobile telephone to obtain a quick overview and/or a reliable confirmation that all his/her personnel belongings, e.g. keys or medical box, are “on board” at the moment the person leaves home.

An absorbent article has one or more fluid filter layers to inhibit electrode traces from being exposed to low volumes of fluid to reduce the number of false positives that are indicated by an RFID tag of the incontinence detection pad. An antenna inlay has a sacrificial trace portion to permit testing for proper operation of an RFID chip electrically coupled to the antenna inlay. After testing, the sacrificial trace portion is severed. A fluid barrier layer blocks fluid from reaching portions of electrode traces that are located on a backsheet outside a periphery of an absorbent core of an incontinence detection pad. The power at which an antenna transmits to wirelessly energize a passive RFID tag of an incontinence detection pad is controlled to reduce the number of false positives indicated by the RFID tag.

Exemplary embodiments relate to updatable displays for transaction cards, such as credit cards or event passes. The displays may be, for instance, an electrophoretic or memory liquid crystal diode display. The transaction card may include a contact pad capable of engaging in wireless communication. Information may be exchanged between the transaction card and a mobile device or terminal, where a processor on the mobile device processes the received information to generate displayable information. The processor updates the display with the displayable information. The contact pad may be electrically connected to the display, and the display may derive electrical power to perform the updating from the wireless communication. For example, where the wireless communication is a near field communication (NFC), a radio frequency field may be generated that supplies enough power to run the processor and at least partially update the display.

A hybrid high-security document includes a document and one or more independent light-emitting modules disposed on or embedded in the document. Each module comprises an antenna with multiple turns, an electronic circuit, and a light emitter mounted and electrically connected on a substrate separate from the document. The electronic circuit is responsive to electrical power provided from the antenna to control the light emitter to emit light. The electronic circuit can include a memory storing information relevant to the hybrid high-security document or its use. The information can be accessed by external readers providing electromagnetic energy to the hybrid high-security document. The hybrid high-security document can be a hybrid banknote.

In the present invention, by connecting a band-gap reference voltage module unit to a threshold unit of a limiter circuit, the ON-voltage of the threshold unit can be dynamically and continuously controlled; and the output voltage value of the band-gap reference voltage module unit can be arbitrarily set as needed for operating the circuit. When a voltage of the antenna terminal is higher than the sum of this band-gap reference voltage value and the respective threshold voltage of the serial MOS transistors, the threshold unit is turned ON to switch on a grounded path, so that charge at the antenna is output to the ground; in this way, the amount of charge at the antenna terminal is reduced and the rectified DC voltage is thus reduced. When the voltage at the antenna terminal is lower than the sum of this band-gap reference voltage value and the respective threshold voltage of the serial MOS transistors, the threshold unit is turned off to switch off the grounded path. The rectifier circuit rectifies all the charges at the antenna end into DC power for powering the load circuit. In this way, the function of continuously adjust the limited voltage is achieved, so that the limited voltage value has continuity and accuracy, and the stability of the operating voltage value of the circuits is guaranteed.

Disclosed herein is a data communications system configured to execute data communication between three parties of a reader/writer, an integrated circuit card wirelessly communicable with the reader/writer in a non-contact manner, and an information processing terminal connected to the intergraded circuit card via a wired interface, the data communications system including: the reader/writer having a read/write wireless control block; the integrated circuit card having an integrated circuit card wireless control block; and the information processing terminal having a request acceptance block, a data storage block, and a data transmission block.

This disclosure is generally directed to an RFID system that includes a hybrid RFID tag offering a functionality of a passive RFID tag and an active RFID tag. When operating as a passive RFID tag, an RF signal received from an RFID reader is harvested to produce a DC voltage for powering the hybrid RFID tag. The harvested DC voltage is coupled into a capacitor at a slow-charging rate so as to avoid a capacitor inrush current causing an abrupt power supply voltage drop. A controller chip in the hybrid RFID tag can execute some RFID functions at this time, thereby speeding up a response to the RFID reader. The capacitor is then charged at a fast-charging rate for storing a reserve charge. The hybrid RFID tag can subsequently use the reserve charge to operate as an active RFID tag without waiting for an RF signal from the RFID reader.

An RFID tag for capacitively coupled RFID communication with an RFID reader. The RFID tag comprising an integrated circuit (IC), the IC including a first RFID tag electrode arranged to capacitively couple with a first electrode of the RFID reader to form a first capacitor, and a second RFID tag electrode arranged to capacitively couple with a second electrode of the RFID reader to form a second capacitor when the RFID tag is in a first position relative to the RFID reader; power supply circuitry configured to extract power from a first time-varying signal received from the RFID reader via at least one of the first RFID tag electrode and the second RFID tag electrode, and supply the extracted power to circuitry of the RFID tag; and data transmission circuitry configured to receive the extracted power from the power supply circuitry, and transmit data to the RFID reader via at least one of the first RFID tag electrode and the second RFID tag electrode.

A substrate for contactless transaction card, which is equipped with an integrated chip (IC) connected to at least one organic light-emitting diode (OLED) and an inductively powered tag.

In accordance with various embodiments, a radio communication processor arrangement including a chip and a battery integrated into the chip is provided.