Abstract: A pn junction type solar cell is formed in a predetermined region on a substrate made of glass. Light emitted from a light emitting unit reaches an n-type semiconductor layer after it passed through substrate. The solar cell generates electromotive force corresponding to a quantity of the emitted light. A control circuit, a mask ROM, a transmitting circuit and an antenna are formed on an upper side of the solar cell. A surface of a semiconductor storage device is entirely covered with an insulating film to block entry of outside air. The insulating film is typically formed of physicochemically stable glass or silicon dioxide.

Abstract: An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a portion of the RFID tag that contains sensitive product identifying information. As a result, smaller tags can be used or multiple signatures can be written at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature schemes are also provided for adding multiple signatures to the RFID tags, for example in a supply chain.

Abstract: The invention relates to a sensor network for determining the position of devices and gear in an aircraft. The sensor network exhibits several sensor nodes, which have an autonomous power supply. The sensor nodes can communicate wirelessly with each other and with a central processing unit. The position of each individual sensor node can be determined by evaluating high-frequency signal parameters.

Abstract: Methods, and systems for efficiently reading data stored in an RFID tag memory are described. A delimited read command is issued by an RFID reader, causing a tag to truncate the data read-out process when a delimiter data pattern is detected in the stored data. Upon receipt of a delimited read command, a tag reads data until a delimiter pattern is detected. The tag determines whether the detected pattern is a valid delimiter pattern or a spurious one. If the detected pattern is a valid delimiter, the tag terminates the read process and transmits the data to the reader. The format of the delimiter pattern may be modified based on needs of a particular communications protocol or specific implementations.

Abstract: The electronic circuit includes a first comparator and a second comparator in which an induced electromotive force of a coil are compared with each of a first reference potential and a second reference potential and which output a pulse signal in accordance with conditions; the first signal processing circuit which outputs a first receiving rectangular wave signal and a first error signal in accordance with conditions of the pulse signal output from the first comparator and in which data held in accordance with conditions of pulse signal output from the second comparator is reset; and the second signal processing circuit which outputs a second receiving rectangular wave signal and a second error signal in accordance with conditions of the pulse signal output from the second comparator and in which data held in accordance with conditions of pulse signal output from the first comparator is reset.

Abstract: An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a portion of the RFID tag that contains sensitive product identifying information. As a result, smaller tags can be used or multiple signatures can be written at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature schemes are also provided for adding multiple signatures to the RFID tags, for example in a supply chain.

Abstract: A method and apparatus for operating a sensor system. A first wireless signal is transmitted from a base station to a sensor unit. At least a portion of the first wireless signal is changed into power for the sensor unit using a power harvesting unit in the sensor unit. Information is received from a number of sensors associated with the sensor unit. The information is transmitted to the base station using a second wireless signal.

Abstract: Provided are an RFID reader and a data recovery method which selectively selects only an integrity-checked phase signal, when receiving a backscattered signal of an RFID tag through an I signal path or a Q signal path, and may reduce a shadow area of a read range. The RFID reader includes a signal receiver which receives a plurality of phase signals; a symbol detector which recovers data with respect to each of the received phase signals; and a signal selector which selects a signal that satisfies a predetermined standard, from the data-recovered phase signals.

Abstract: A transmitter in an RFID system, the transmitter includes a signal generator which has a PIN diode and generates a first signal, a directional unit connected to a cathode of the PIN diode; and an antenna connected to the directional unit, wherein the signal generator has a first terminal configured to receive a first control signal to control a frequency band of the first signal and a second terminal configured to receive a second control signal to control a modulation depth of the first signal.

Abstract: Medical examination or treatment device, in particular x-ray or CT device, comprising a control device controlling the operation of one or a number of device elements, as well as at least one mobile control element assigned to the control device, the control element communicating wirelessly with the control device for operating the examination or treatment device to issue control signals, with a detector element for detecting an item of information which can be read out or sent by a control element assigned to the control device during a movement of the control element from the room containing the medical examination or treatment device, the room communicating with the control device which disables the control operation as a function of the detection result.

Abstract: Systems and methods are operable to initiate a pairing process and a de-pairing process between a controlled device and a radio frequency (RF) remote control. An exemplary embodiment detects presence of a radio frequency identifier (RFID) tag in an interrogation zone established by an RFID tag reader, automatically initiates a pairing process in response to detecting the presence of the RFID tag in the interrogation zone, and completes the pairing process between the RF remote control and the controlled device, wherein the pairing process identifies a unique identifier associated with the RF remote control. A subsequently received RF signal emitted by the RF remote control includes at least one command configured to control operation of the controlled device and includes the unique identifier.

Abstract: The invention relates to a method for coupling/uncoupling between a transmitter (1) and a receiver (2) capable of communicating with one another via a wireless link, characterized in that it comprises the following steps: transmission of a first signal by the transmitter (1), transmission of a second signal by said transmitter (1), amplitude processing by the receiver (2) of the first signal (30, 32) and of the second signal (31, 33) received and storage or deletion by the receiver of an identification code (C1, C2, Cn) of the transmitter (1) according to the processing carried out.

Abstract: A system is operated to transmit signals from a transmitter to a receiver. The transmitter is muted. A receiver transfer function for the receiver is adjusted so that an output signal of the receiver is minimized. A transmitter transfer function of the transmitter is set to be inverse to the adjusted receiver transfer function.

Abstract: A method and system for monitoring forestry products are provided in the present invention, wherein at least one active communicating device is disposed on a forestry product, and reading and transmitting devices are also disposed in specific locations for building a monitoring and management mechanism to protect the forestry products from stealing. By means the method and system of the present invention, it is capable of providing real-time monitoring information and collecting evidence of illegal actions immediately so that the management staff can control the situation and status of the forestry products, which is useful for improving the efficiency of forestry management. Meanwhile, the present invention may also help to find those lawless persons who steal and fell illegally the forestry resources so as to ensure the safety of working environment for forest managing staff and sustainable management of forest and natural resources.

Abstract: The invention relates to a device for analysing radio-frequency systems. Such a device comprises means for detecting radio-frequency electromagnetic signals, and means for determining at least one analog property of the radio-frequency signal received form the reader. According to the invention, the device further comprises means for producing an electromagnetic excitation signal in order to excite the radio-frequency tag, and means for determining at least one analog property of the return signal received from the radio-frequency tag. The device permits the effective analysis of RFID systems, for example, in system-installation and error-searching situations.

Abstract: Apparatus and methods are described which are useful for determining a location characteristic between an RFID tag and an RFID tag reader or a second RFID tag. In various embodiments, signals backscattered from a singulated tag over a range of frequencies are evaluated for in-phase I and in-quadrature Q signal components. The I-Q data is processed to determine phase delay angles associated with each signal frequency. The phase delay data can be processed by a sum of squared errors method or Fourier transform method to determine a distance to the singulated tag. The methods can also be used to determine any of a location, a radial velocity, a directional velocity of the singulated tag, and proximity of the singulated tag to a second tag.

Abstract: This invention relates to a novel wireless barcode MEMS canary which can be embedded in electronic systems and periodically monitored to measure degradation over a period of time. The material used to print the bars of the barcode is selected such that it is capable of changing one or more of its properties in response to a change in ambient conditions. Means are provided for reading out said change in properties such that when an interrogator is brought into proximity to the sensor, the change in properties can be detected. By establishing the relationship between the healthy state of the barcode and its degradation to that of the electronic system and the components, the residual life of the system can be established and preventive measures taken before failure.

Abstract: In embodiments of the present invention improved capabilities are described for a Radio Frequency ID (RFID) tag that contains multiple Radio Frequency (RF) network nodes that provide enhanced memory capabilities, redundant functionality, and multiple frequency capabilities to the RFID tag using an inter-RF network node communication connection. The inter-RF network node communication may allow the coordination of RFID tag memory and functionality.

Abstract: A real-time method and system for locating a mobile object or person in a tracking environment while conserving electrical energy in a battery-operated tracking tag associated with the object or person are provided. The method includes modulating a first carrier signal with a first packet including a first set of identification data having a first length to obtain a first modulated signal. The first set of data identifies the tag associated with the object or person. The method also includes transmitting the first modulated signal containing the first packet. Transmission of the first modulated signal consumes a first amount of electrical energy. The first modulated signal has a first precision and a first range within the environment. The method further includes modulating a second carrier signal with a second packet including a second set of identification data reduced in length from and based on the first set of identification data.

Abstract: The present invention is directed to reducing leakage of a transmitting signal to a receiving unit in a wireless communication system with a transmitting unit and the receiving unit sharing an antenna.

Abstract: Device for reading radio frequency identifiers (RFID) ensuring volumetric confinement at UHF of the detection of RFID tags to a desired volume above a reading surface, which includes one or more metallic transmission lines (6) printed on a dielectric substrate (8), on a metallic reference ground plane (7), an RFID reader or interrogator (3) at one end and a load (10) at the other end whereby a structure (19,21,22,23), that comprises the reading surface, in which the one or more transmission lines (6), the dielectric substrate (8) and the metallic reference ground plane (7) are embedded or attached, and the electric fields (11) are contained in planes perpendicular to the one or more transmission lines (6) with one to five wavelengths that extend over all or part of the length of the reading surface, and wherein the dielectric substrate (8) has a low permittivity, less than 1.5 and the width of the transmission line (6) is comprised between 8 and 15% of the wavelength.

Abstract: Disclosed is a tire pressure monitoring system for motor vehicles, including a central unit (2, 7) with at least one trigger module (4), which is integrated into the central unit or connects through control lines (3) to the central unit, and with at least one tire module (6) arranged in a vehicle wheel (5), with the tire module being in communication with the central unit and the trigger module by means of wireless transmission technology, and with the tire pressure monitoring system including fewer trigger modules than tire modules.

Abstract: Apparatus for orientating a user in a space wherein the space comprises a plurality of zones of which only certain zones constitute functional zones wherein each functional zone includes a first type device containing information relating to the position of the zone in the space and wherein the first type device is reactive to the presence of a second type device associated with the user to provide the user with the information to determine the orientation of the user in the space. A method of orientating the user within the space and guiding the user toward one or more features in the space is also disclosed.

Abstract: A wireless identification system can include a directed-energy device configured as a reader. The reader can include a charged particle generator configured to generate energized particles and a charge transformer configured to receive the energized particles that include charged particles from the charged particle generator and to output a wavefront including energized particles that include particles having substantially zero charge. The system can also include an identification tag configured to be activated when impinged by the wavefront from the reader so as to transmit a signal configured to be used by the reader. A method of using a directed-energy device as a tag reader in a wireless identification system can include generating a wavefront that includes particles at substantially zero charge, impinging an identification tag with the wavefront so as to activate the identification tag so as to send a signal and detecting a signal transmitted by the identification tag.

Abstract: There is provided a system for secure profile setting that includes at least one shared device and an RFID reader module embedded in the at least one shared device. The system further includes a database that is in communication with the at least one shared device. In the system, an RFID transponder module associated with a user transmits a signal that enables the at least one shared device to identify the user. The RFID transponder module can include a fingerprint scanner module, which can be used to acquire a user's fingerprint data to authenticate the user. Thus, after identifying the user, the at least one shared device retrieves a profile corresponding to the user from the database and sets the profile.

Abstract: Systems and methods for interactively interfacing handheld devices and RFID media are described. A method for interactively interfacing HHDs and RFID media. The method includes starting an application on a HHD for interfacing with RFID media, the HHD including a RFID reader, receiving user input relating to the storing of commands or messages of RFID media, creating one or more commands or messages based on the received user input, and storing the one or more commands or messages on a RFID media using the RFID reader.

Abstract: A battery includes one or more rechargeable cells, a wireless power coil, a battery charger circuit, and may further include an RFID module. The wireless power coil is operable to generate an AC voltage from a wireless power electromagnetic field. The battery charger circuit is operable to generate a battery charge voltage from the AC voltage in accordance with a battery charge control signal and, when enabled, to charge the one or more rechargeable cells via the battery charge voltage. If the battery further includes the RFID module, it is operable to generate the battery charge control signal and communicate with a wireless power transmitter device.

Abstract: Methods of determining patch cord connectivity information include receiving, at each of a plurality of RFID readers, a signal from an RFID tag that is associated with a first patch cord and then, identifying the one of a plurality of connector ports that the first patch cord is connected to based at least in part on respective strengths of the signals received at each of the plurality of RFID readers. RFID triangulation systems and methods of calibrating such systems are also provided.

Abstract: A system for controlling the operation of a remote device via wireless communication. The remote device includes resources for communication via at least two different short-range wireless mediums with different operational ranges. The sensing of a scanning communication signal from a first wireless medium may trigger the disconnection of the remote device from an already established connection, through a second wireless communication medium, to the scanning device. The remote device may provide a remote device ID to the scanning device. As a result of this transaction, one or both devices may experience a mode change, which may be signaled by a audible, visual or tactile confirmation to a user.

Abstract: The semiconductor device includes a signal processing circuit, an antenna circuit that is connected to the signal processing circuit, and a storage means that supplies electric power to the signal processing circuit. The signal processing circuit receives and transmits information through the antenna circuit, generates a direct current voltage from signals received by the antenna circuit, and stores the direct current voltage in the storage means. Furthermore, the antenna circuit has an antenna portion that receives signals by an electromagnetic induction method and an antenna portion that receives signals by a microwave method so that signals of frequencies from a wide band can be received. Because signals from a wide band can be received, the environment in which the storage means can be charged is widened.

Abstract: The present invention relates to a powerless electronic notepad and a powerless wireless transmission system using the same, and more particularly, to a powerless electronic notepad that stores data recorded on an electronic notepad using piezoelectric elements and transmits the stored data using a passive RFID tag without the use of a power source, and a powerless wireless transmission system using the same.

Abstract: A manner of creating an electronic device directory containing the identity of electronic devices that registered in an area associated with a plurality of events, which events are similar in certain respects. The directory is useful, for example, investigating criminal cases. When such an event occurs, an application server is notified and generates one or more device registration capture requests to determine which electronic devices are registered in the area and at approximately the same time at which the event occurs. The device registration capture associated with this event is compared with other device registration captures associated with other, similar events to create the electronic device directory. The electronic device directory entries are preferable filtered to select the devices most likely to be associated with the actual events in question.

Abstract: The integration of surface acoustic wave (SAW) filters, microfabricated transmission lines, and sensors onto polymer substrates in order to enable a passive wireless sensor platform is described herein. Incident microwave pulses on an integrated antenna are converted to an acoustic wave via a SAW filter and transmitted to an impedance based sensor, which for this work is a photodiode. Changes in the sensor state induce a corresponding change in the impedance of the sensor resulting in a reflectance profile. Data collected at a calibrated receiver is used to infer the state of the sensor. Based on this principal, light levels were passively and wirelessly demonstrated to be sensed at distances of up to about 12 feet.

Abstract: A response system and method of receiving remotely entered user input selections at a central location includes providing at least one base unit and a plurality of response units. A user input selection is received with each of the response units. The user input selection is communicated to the at least one base unit utilizing wireless communication. Personality data is received at each of the response units. The at least one base unit communicates with each of the response units according to the personality data of the particular one of the response units to receive a user input selection. The personality data is received by an individual one of the response units communicating with the at least one base unit at close proximity to provide personality data to that response unit.

Abstract: The invention relates to a data tag (6, 21, 32) storing at least one setting (13, 43) for controlling one or more lights (4, 18, 29). There is also provided a system and method for controlling a plurality of lights by receiving information (43) indicative of lighting settings for the plurality of lights (18, 29) from a data tag (21, 32) and controlling the plurality of lights (18, 29) in accordance with the lighting settings.

Abstract: A radio frequency identification (RFID) device includes: a first amplifier configured to amplify a level of a first radio signal applied through a first antenna, and output an amplified signal; a second amplifier configured to amplify the amplified signal to a predetermined level, and output a power signal; a demodulator configured to demodulate the amplified signal and generate a command signal; a transmission switch configured to selectively output the power signal according to a response signal corresponding to the command signal; and a modulator configured to output a second radio signal, which is generated by modulating the power signal, to a second antenna.

Abstract: A method and system for providing enhanced interactivity and immersion in a theme park environment. The system uses a token having a tag that is able to communicate with a reader that is associated with a theme park device. The tag communicates to the reader identification data that correlates to the theme of the theme park and the theme park device. The theme park device will act or behave in response to the identification data.

Abstract: An ultra low power, low complexity, low collision, deterministic modulation method that also works as a massive medium access mechanism for communication systems is based on positioning data in a communication resource space, such as time and frequency, such that the position of a symbol in that space determines its value and its access to the medium. The number base of the symbol is determined by the size of the subset of the resource space it is positioning itself in and, thereby, a few sparsely located symbols can convey a large value, while the remainder of the space can be simultaneously and massively used by other sparsely resource using members of the network.

Abstract: An image-forming system includes a transmission device and an image-forming device. The transmission device includes a transmitting unit that transmits image data, command data instructing to form an image corresponding to the image data on a recording medium having a storing part and to write embedded data to the storing part, and first selection data indicating whether or not the image should be formed when the embedded data cannot be written in the storing part. The image-forming device includes an image-forming unit and a controlling unit. The controlling unit controls, when the image-forming unit cannot write the embedded data in the storing unit, the image-forming unit to form the image if the first selection data indicates that the image should be formed, and to fail to form the image if the first selection data indicates that the image should not be formed.

Abstract: RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more thresholds are used to digitize the received signal implemented by two or more demodulators. Multiple low pass and digital filters may be implemented with the demodulators, allowing removal of narrow pulses caused by the interference and reduction of beat tone amplitude.

Abstract: A system and method for controlling a variable light source where a variation in the light source can be triggered by utilizing a product identifier, such as for example RFIDs associated with the product being displayed to tell the controller to control the variable display case lighting to vary its color/intensity to change the lighting to best showcase the product; or utilizing UPC codes, scanned using a handheld device to accomplish the same objective; or utilizing motion/infrared/ultrasonic sensors particularly when lighting is to be turned off to conserve on power consumption. For example, red meat and poultry each may require their respective different lighting to be best displayed; thus red meat products may have a different RFID than poultry items; and gold jewelry items may have a different RFID than sterling silver jewelry items.

Abstract: This disclosure discloses an RFID tag communication apparatus comprising: a housing including a bottom surface; an antenna provided at a distance h from the bottom surface; and a radio frequency circuit including a carrier wave transmitting device that generates a carrier wave of a frequency fc; wherein the correlation as fo<fc<fm is satisfied under the conditions of a resonance frequency fm of the antenna when the bottom surface is fixed in contact with a metal surface, a resonance frequency fo of the antenna when the bottom surface is fixed in contact with a non-metal surface.

Abstract: Systems, methods and computer program products for storing, securing, identifying, authenticating and retrieving multimedia messages using low-cost barcode or RFID tags are disclosed. Additionally, a set of software features facilitate the easy and intuitive storage and retrieval of multimedia information using a mobile telephone acting on the media tags. Such tags can be attached or affixed to physical, real-world objects thus allowing multimedia messages associated with the tags to be retrieved with the real-world objects in a time-shifted and space-shifted manner from when and where they were recorded. The present invention uses low-cost (metal, paper or plastic) tags—encoded using barcodes or RFID—as virtual message storage units and commercially-available terminals equipped with appropriate software and sensors, such as mobile telephones, as recording and reading devices.

Abstract: When multiple readers for RF transponders have to be placed in close proximity, such as in adjacent lanes of a highway toll barrier, they can be set to operate at different frequencies. When signals from two adjacent ones of the readers interfere, the resulting signal includes interference terms whose frequencies equal the sum of the reader frequencies and the difference between the reader frequencies. To remove such interference terms while passing the desired terms, a tag includes a low-pass or other frequency-selective filter.

Abstract: A radio frequency identification (RFID) system comprises a reader, a memory, and a processor. When initiated, the reader receives an identification code of a first tag within a wireless communication range. The memory stores a time setting and an identification code of a second tag. The processor initiates the reader at a predetermined time indicated by the time setting, thus to determine whether the second tag exists in the wireless communication range.

Abstract: The present invention provides a wireless service purchasing system used for getting a service provided by a service provider. In one embodiment, the system comprises a mobile device including a SIM card, wherein a RFID tag is integrated, the user being identified by the same identification number in both SIM card and RFID tag. The RFID tag is adapted to communicate with a service controller booth so that the user of the mobile device be authorized to get the service. The system comprises a service provider server adapted to receive a request when it has received the identification number from the RFID tag to verify whether an account associated with the user has enough credit to gain access to the requested service and to send back a reply to the service controller booth authorizing or denying the user access to the service according to whether there is enough credit in the account.

Abstract: A system and method for partially pre-programming RFID labels. Common data associated with items to which RFID labels are to be applied is pre-programmed into the labels. Item specific data is programmed by a RFID label programmer in the application process.

Abstract: Embodiments of the disclosure relate to method and apparatus for efficient wireless adaptive uplink protocols for communication networks.

Abstract: A betting apparatus for game includes a betting board, antennas and a control unit. The antennas are arranged to regions on the betting board and detect a gaming chip placed on the betting board. The control unit turns on or off an electric current to each of the antennas. When the control unit turns on an electric current to one antenna arranged to one region, the control unit shorts another antenna arranged to another region adjacent to the one region.

Abstract: Disclosed are embodiments of a radio frequency identification (RFID) authentication system and an associated authentication methodology. The embodiments incorporate an identification device (e.g., an identification badge, a key fob, etc.) with an embedded RFID tag. The embedded RFID tag is associated with a specific user and stores a private key generated as part of a public key-private key encryption scheme. The private key is read by an RFID reader and used to decode public key encrypted data stored within or accessible by a computer system (e.g., a desktop computer system, a laptop computer system, a personal digital assistant (PDA), a digital fax machine, wireless telephone, etc.). Thus, the embodiments provide a portable way to use public key-private key encryption scheme data anywhere using RFID technology.