Philtech Inc.

Kabushiki Kaisha Toshiba

Katsuhiko Mishima

Shinji Nishihara

Yuji Furumura

Naomi Mura

Katsuhiro Fujino

Susumu Kamihashi

Haruki Yahata

Satoru Tsujimura

Provided are an RF powder particle, an RF powder, and an RF powder-containing base that can make it difficult to fabricate, for example, forged documents or forged bank notes with respect to sheet-like objects having high proprietary values, such as bank notes, and that allow necessary information to be stored in each of the large number of particles which are each provided with a tank circuit having a predetermined resonant frequency. The RF powder particle includes a coil(inductance element) as a magnetic filed coupling element and a condenser(capacitance element) connected to the both ends of the coil on an insulating surface of a substrateand is configured so as to form a tank circuitby the inductance element and the capacitance element. The tank circuitfunctions as a circuit in a resonance state or in a non-resonance state in accordance with conditions in response to a high-frequency magnetic field from outside.

RF powder particle, RF powder, and RF powder-containing base

A base data management system is provided which can grasp specific data recorded in a plate-like or sheet-like object having high property values, such as a variety of cards, paper money, and securities, in real time, and can manage and track circulating paper money or the like. The base data management system includes a base data reader including a reading mechanism that reads specific data or resonance frequency recorded in a base with a magnetic field coupling and a transmitting mechanism that transmits the specific frequency date read by the reading mechanism and reader information. The system also includes a host computer including a data receiving mechanism that receives the specific frequency date and reader information transmitted from the base data reader through a network, a storage device that stores the specific data and reader information received by the data receiving mechanism, and an output mechanism that processes the data stored in the storage device or compares the data with other data and thus outputs the data.

Base data management system

A method is provided for adding an RF powder to a sheet-like object having a high property value, such as a variety of cards, paper money, and securities. The RF powder makes it very difficult to produce, for example, counterfeit cards, documents and bills. Also, an RF powder-added base sheet to which the RF powder has been added is provided. In the method for adding the RF powder, the RF powder includes a plurality of RF powder particlesand is disposed on a surface of a base sheetto add the RF powder to the base sheet. Each RF powder particlehas a magnetic field coupling circuit element in a high frequency magnetic field having a specific frequency. The RF powder is disposed on a surface of a base sheet by a printing technique. The RF powder-added base sheetincludes an RF powder including a plurality of RF powder particlesdisposed within a printed object on a surface of a base sheet. Each RF powder particlehas a magnetic field coupling circuit element in a high frequency magnetic field having a high frequency.

Method for adding RF powder and RF powder-added base sheet

RF particles that can render more difficult fabrication of counterfeit notes and the like, can generate radiofrequency magnetic fields by oscillation of a tank circuit having a particular resonant frequency, and that can easily and reliably supply electric power for oscillation, RF powder, and a method for exciting the RF powder are provided. In an RF powder particle, a coil (inductance element) serving as an antenna and a capacitor (capacitance element) connected to the coil are formed on an insulating film surface of a substrate. The inductance element and the capacitance element form a tank circuit, and a photovoltaic cell for supplying power to the tank circuit is disposed on the substrate.

RF powder particles including an inductance element, a capacitance element, and a photovoltaic cell and method for exciting RF powder

Provided are a method for providing an RF powder that is easily handled because it is used as a powder (powdery state), not used as individual elements, and is high in applicability and extensibility, extremely low in manufacturing cost in respect of the unit price of each particle, and extremely high in practicability; and an RF powder-containing liquid. In the method for providing an RF powder, an RF powder composed of a large number of RF powder particlesis provided to a user in a state of being stored in a container. The RF powder is stored in the containertogether with a medium that prevents the large number of RF powder particlesfrom adhering to one another. The medium is a liquid having a specific color determined so as to correspond to the characteristic frequency of the RF powder.

Method for providing RF powder and RF powder-containing liquid

A base sheethas a structure that stably couples a particular chip measuring 1 mm or less on paper with an antenna line by only disposing the chip and antenna line in such a manner that the chip and antenna line are close to each other, without electrically bringing the chip and antenna line into contact with each other. The base sheetincludes a chiphaving a spiral coilwith at least one turn disposed on a surface of the chip, or inside the chip and near the surface thereof and an antenna linehaving a conductor partA orbiting around the coilA of the chipor directly over or directly below the coilA so that the conductor part is magnetically coupled with the coilA. This base sheet has a structure that stably couples even a chip measuring 1 mm or less on paper or the like with an antenna line by only disposing the chip and antenna line in such a manner that the chip and antenna line are close to each other, without physically bringing the chip and antenna line into contact with each other.

Base sheet

A method for manufacturing RF powder wherein the RF powder is composed of a large amount of particles and used as collective RF powder (a powdery entity); and a large amount of RF powder particles can be obtained from a wafer in a stable manner and at a high yield is provided. The method for manufacturing RF powder is a method for manufacturing RF powder composed of a large amount of particleseach having a substrateand a magnetic coupling circuit device. This method includes a step Sof forming many antenna circuit deviceson a wafer; a gas dicing step Sfor drawing dicing grooves on a wafer to locate positions of separation of magnetic coupling circuit devices; a protection film formation step Sfor coating surrounding areas of the magnetic coupling circuit devices with a protection film; a reinforcement step Sfor attaching the wafer to a supporting plate using an adhesive sheet; a grinding step Sfor grinding the backside of the wafer until the dicing grooves are reached; and a separation step Sfor separating the circuit devices by removing the supporting plate.

Method for manufacturing RF powder

The disclosure concerns an inter-base station frame synchronization system for use in a mobile communication system having at least one master base station and a plurality of slave base stations. The master base station is arranged to transmit a control channel signal to the slave base stations located around the master base station in synchronization with a reference frame timing. The slave base stations set a control channel signal observation period. The slave base stations are arranged to generate frame timing based on timings of a received control channel signal from the master base station or other slave base stations when the received control channel signal is received during the control channel signal observation period.

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Yokohama, Japan

Katsuhiko Mishima