| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Reader for RFID tag for near-field wireless communication and near-field wireless communication system | US14768776 | 2013-12-16 | US09959436B2 | 2018-05-01 | Masakazu Tanikawa; Katsuyoshi Onishi |
| In a reader for a radio frequency identification (RFID) tag for near-field wireless communication, an antenna selection switch includes a plurality of antennae arranged with an extent within a predetermined range for transmitting and receiving data to and from an RFID tag, and selects one antenna to be used for transmission and reception of data from among the plurality of antennae. A detection part acquires, when a carrier wave transmitted from the RFID tag is received by any of the plurality of antennae, information indicative of an antenna selected by the antenna selection switch under the control of an antenna changeover controlling part. | ||||||
| 22 | Multicarrier communication system employing explicit frequency hopping | US15075891 | 2016-03-21 | US09912372B2 | 2018-03-06 | Erik Dahlman; Ylva Jading; Per Skillermark; Stefan Parkvall |
| Variable bandwidth assignment and frequency hopping are employed to make efficient use of radio resources. Variable bandwidth assignment is achieved by dynamically allocating different numbers of subcarriers to different wireless communication devices depending on their instantaneous channel conditions. The frequency hopping patterns are determined “on-the-fly” based on the current bandwidth assignments. The bandwidth assignments and frequency hopping patterns are signaled to the wireless communication devices in a scheduling grant. | ||||||
| 23 | RECEIVER AND COMMUNICATION SYSTEM | US15543711 | 2015-12-17 | US20170373726A1 | 2017-12-28 | Hiroaki Nakano; Uichiro Omae; Hiroaki Fujita; Masayoshi Abe; Ken Matsui |
| A receiver of the disclosure includes: a load modulator that transmits an active load modulation signal generated by active load modulation to a reader writer, in response to a carrier signal transmitted from the reader writer; and a controller that determines whether the active load modulation signal has reached the reader writer, and controls the load modulator to retransmit the active load modulation signal, after changing a phase of the active load modulation signal with respect to the carrier signal, in a case where the controller determines that the active load modulation signal has not reached the reader writer. | ||||||
| 24 | Keyless entry device | US15406464 | 2017-01-13 | US09849860B2 | 2017-12-26 | Akira Miyazawa |
| A vehicle-side device includes a vehicle-side control unit that controls transmission of a request signal and performs predetermined control when authentication is successful on the basis of an answer signal, a portable device includes a portable-device control unit that detects reception intensity information of the request signal transmitted from the vehicle-side device and transmits an answer signal based on the reception intensity, the vehicle-side control unit controls a vehicle-side transmission unit so that the vehicle-side transmission unit transmits the request signal including the determination signal having an intensity level different for each section, and the vehicle-side control unit or the portable-device control unit determines whether or not the request signal is a true signal on the basis of a fluctuation in the reception intensity in each section of the determination signal received by the portable device. | ||||||
| 25 | Communication System and Work Vehicle | US15514158 | 2015-02-27 | US20170294938A1 | 2017-10-12 | Eiji Mizutani; Takayuki Koshi |
| A communication system provided to a working vehicle includes: an information receiving unit that communicates with identification devices and receives identification information; a first area information storage that stores first area information indicating an area where use of the information receiving unit is permitted; a comparing unit that compares the first area information with second area information indicating an area where the working vehicle is used; and a communication control unit that prohibits the information receiving unit from outputting electric waves when the second area information is not included in the first area information. | ||||||
| 26 | System to extend battery power in remote tracking devices | US14190904 | 2014-02-26 | US09523775B2 | 2016-12-20 | Mrinmoy Chakraborty; Dadi Setiadi; Brian Lee; Jamshed Dubash; Jahangir Nakra |
| An RF asset-tracking device that has an extended operational life, thus increasing the duration between battery replacement or maintenance. The asset-tracking device is provided with an electro-mechanical energy-harvesting device to supplement the battery. The energy-harvesting device provides additional power to augment the battery on a temporary basis, when the battery level is low, until the battery can be replaced. In one particular embodiment, the tracking device has a power management system, a battery power source and a battery monitor, and an electro-mechanical energy-harvesting device and a high capacity supercapacitor operably connected to the power management system. | ||||||
| 27 | COMMUNICATION TERMINAL, COMPUTER-READABLE STORAGE MEDIUM, AND COMMUNICATION METHOD | US14976279 | 2015-12-21 | US20160119965A1 | 2016-04-28 | Norihito Aoki |
| A communication terminal includes a first communication unit which has a power supply function by electromagnetic induction and writes or reads information in an active or passive mode, and a second communication unit having a communication capability higher than that of the first communication unit. A mode in which the first communication unit is functioning, the active mode or the passive mode, is determined. Communication via the second communication unit is controlled based on the determination result. | ||||||
| 28 | READER FOR RFID TAG FOR NEAR-FIELD WIRELESS COMMUNICATION AND NEAR-FIELD WIRELESS COMMUNICATION SYSTEM | US14768776 | 2013-12-16 | US20160004894A1 | 2016-01-07 | Masakazu Tanikawa; Katsuyoshi Onishi |
| In a reader for a radio frequency identification (RFID) tag for near-field wireless communication, an antenna selection switch includes a plurality of antennae arranged with an extent within a predetermined range for transmitting and receiving data to and from an RFID tag, and selects one antenna to be used for transmission and reception of data from among the plurality of antennae. A detection part acquires, when a carrier wave transmitted from the RFID tag is received by any of the plurality of antennae, information indicative of an antenna selected by the antenna selection switch under the control of an antenna changeover controlling part. | ||||||
| 29 | SYSTEM TO EXTEND BATTERY POWER IN REMOTE TRACKING DEVICES | US14190904 | 2014-02-26 | US20150241566A1 | 2015-08-27 | Mrinmoy Chakraborty; Dadi Setiadi; Brian Lee; Jamshed Dubash; Jahangir Nakra |
| An RF asset-tracking device that has an extended operational life, thus increasing the duration between battery replacement or maintenance. The asset-tracking device is provided with an electro-mechanical energy-harvesting device to supplement the battery. The energy-harvesting device provides additional power to augment the battery on a temporary basis, when the battery level is low, until the battery can be replaced. In one particular embodiment, the tracking device has a power management system, a battery power source and a battery monitor, and an electro-mechanical energy-harvesting device and a high capacity supercapacitor operably connected to the power management system. | ||||||
| 30 | Real-time blood detection system | US14121598 | 2014-09-22 | US20150087935A1 | 2015-03-26 | Alice McKinstry Davis; Dennis Willard Davis; Russell Denning Davis; Harry Michael Pellegrino |
| Disclosed is a system for real-time detection and annunciation of blood associated with menstruation and surgical wounds. The system comprises blood detection means, communication means for relay of blood detection information, and annunciation means to inform the user of the emanation of blood. Various system embodiments include local and remote as well as covert and non-covert annunciation to users or medical personnel, various forms of real-time blood detection sensors, blood analysis capability, and smart bandage telemetry. | ||||||
| 31 | Base station apparatus, mobile station apparatus, and communications control method | US12672874 | 2008-08-08 | US08830905B2 | 2014-09-09 | Hiroyuki Ishii |
| A base station apparatus in a radio communications system is disclosed. The radio communications system has a mobile station apparatus and the base station apparatus in communication with the mobile station apparatus to which is applied a scheduling scheme which allocates a radio resource for each of constant periods. The base station apparatus includes a first transmitting unit which conducts a first transmission of a first signal for each of the constant periods based on the scheduling scheme; and a second transmitting unit which conducts second and subsequent transmissions at predetermined timings when an error occurs in the first transmission. | ||||||
| 32 | Methods and apparatus for wirelessly communicating signals that include embedded synchronization/pilot sequences | US13359205 | 2012-01-26 | US08331863B2 | 2012-12-11 | John Eric Kleider; Robert John Baxley |
| An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time domain transformations of the combined signals to produce a plurality of candidate signals, determining peak-to-average ratios for at least some of the plurality of candidate signals, identifying a selected signal from the plurality of candidate signals based on the peak-to-average ratios, and transmitting the selected signal over a wireless communication channel. An embodiment further includes a receiver receiving a channel-affected version of the transmitted, selected signal, determining an estimate of a selective mapping index, which identifies the synchronization/pilot sequence from the plurality of synchronization/pilot sequences, applying corrections to the received signal based on estimated channel perturbations to produce an equalized combined signal, and producing an output data symbol from the equalized combined signal. | ||||||
| 33 | DOPPLER SENSOR AND ILLUMINATION DEVICE INCLUDING SAME | US13371730 | 2012-02-13 | US20120206288A1 | 2012-08-16 | Tadashi MURAKAMI; Shigeo GOTOU |
| A doppler sensor includes a doppler signal generation unit and a determining unit. The doppler signal generation unit serves to transmit an electric wave to a detection range and receiving electric waves from a detection range, and generating a doppler signal based on a transmission signal used in transmitting the electric wave and a reception signal obtained from the received electric waves, and the determining unit serves to determine whether or not there exists a human body in the detection range through a spectrum analysis using a peak frequency, which is a frequency having the highest intensity in a difference spectrum obtained by subtracting a background spectrum from the spectrum of the doppler signal. | ||||||
| 34 | METHODS AND APPARATUS FOR WIRELESSLY COMMUNICATING SIGNALS THAT INCLUDE EMBEDDED SYNCHRONIZATION/PILOT SEQUENCES | US13359205 | 2012-01-26 | US20120121003A1 | 2012-05-17 | John Eric KLEIDER; Robert John BAXLEY |
| An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time domain transformations of the combined signals to produce a plurality of candidate signals, determining peak-to-average ratios for at least some of the plurality of candidate signals, identifying a selected signal from the plurality of candidate signals based on the peak-to-average ratios, and transmitting the selected signal over a wireless communication channel. An embodiment further includes a receiver receiving a channel-affected version of the transmitted, selected signal, determining an estimate of a selective mapping index, which identifies the synchronization/pilot sequence from the plurality of synchronization/pilot sequences, applying corrections to the received signal based on estimated channel perturbations to produce an equalized combined signal, and producing an output data symbol from the equalized combined signal. | ||||||
| 35 | RF ID tag device | US10590882 | 2005-02-21 | US08179263B2 | 2012-05-15 | Hitoshi Kitayoshi; Kunio Sawaya |
| The present invention aims to overcome the drawback with conventional RFID tag devices having a short communication range, and expand the communication range to several times or more that in the conventional scheme. The conventional scheme is based on equilibrium feeding/equilibrium modulation (a two-terminal circuit for antenna operation), whereas the present invention is based on disequilibrium feeding/equilibrium modulation (a three-terminal circuit for antenna operation). The conventional scheme is based on simple rectification of received RF signals, whereas the present invention employs a circuit based on a combination of a stub resonance-based, impedance transformation boosting scheme and a ladder boosting scheme. The conventional scheme is based on ASK or BPSK modulation, whereas the present invention is based on passive modulation, but can employ a QPSK modulation circuit. | ||||||
| 36 | Methods and apparatus for wirelessly communicating signals that include embedded synchronization/pilot sequences | US12038983 | 2008-02-28 | US08131218B2 | 2012-03-06 | John Eric Kleider; Robert John Baxley |
| An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time domain transformations of the combined signals to produce a plurality of candidate signals, determining peak-to-average ratios for at least some of the plurality of candidate signals, identifying a selected signal from the plurality of candidate signals based on the peak-to-average ratios, and transmitting the selected signal over a wireless communication channel. An embodiment further includes a receiver receiving a channel-affected version of the transmitted, selected signal, determining an estimate of a selective mapping index, which identifies the synchronization/pilot sequence from the plurality of synchronization/pilot sequences, applying corrections to the received signal based on estimated channel perturbations to produce an equalized combined signal, and producing an output data symbol from the equalized combined signal. | ||||||
| 37 | DATA COMMUNICATION SYSTEM, DEVICE FOR EXECUTING IC CARD FUNCTION, CONTROL METHOD FOR THE DEVICE, AND INFORMATION PROCESSING TERMINAL | US13172296 | 2011-06-29 | US20110254666A1 | 2011-10-20 | Toyokazu OTA; Yasumasa Nakatsugawa |
| An information processing terminal defines a data transfer state for permitting a contactless data communication through an IC card and a data not transfer state for not permitting the contactless data communication so that the IC card manages the communication state of the information processing terminal. The IC card can transfer data to the terminal side depending on whether it is in any of the data transfer state and the data not transfer state without depending on the notification from the information processing terminal, synchronization can be easily established, a transfer speed can be increased, and a large amount of data can be transmitted. | ||||||
| 38 | Multicarrier Communication System Employing Explicit Frequency Hopping | US12672299 | 2008-05-16 | US20110235684A1 | 2011-09-29 | Erik Dahlman; Ylva Jading; Per Skillermark; Stefan Parkvall |
| Variable bandwidth assignment and frequency hopping are employed to make efficient use of radio resources. Variable bandwidth assignment is achieved by dynamically allocating different numbers of subcarriers to different mobile terminals depending on their instantaneous channel conditions. The frequency hopping patterns are determined “on-the-fly” based on the current bandwidth assignments. The bandwidth assignments and frequency hopping patterns are signaled to the mobile terminals in a scheduling grant. | ||||||
| 39 | Method of encoding data | US12387382 | 2009-05-01 | US07932842B2 | 2011-04-26 | Joseph M. Ryan, II; Joseph M. Ryan, III; Gary D. Hamor |
| A data encoder-decoder which generates an encoded data element which can be stored in and retrieved from a reduced space memory element. | ||||||
| 40 | Radio-tag reading system, radio-tag reader, and radio tag | US11631677 | 2004-07-29 | US07889058B2 | 2011-02-15 | Hiroyoshi Suga; Yukimasa Nagai |
| The radio-tag reading system includes a radio-tag reader and a radio tag storing therein radio tag information. In the radio-tag reader, a radio-tag detection processor transmits via the communication unit a search signal at a predetermined time interval, and detects that the radio tag enters into the communication area of the communication unit based on a response signal to the search signal. A radio-tag information communication processor reads the radio tag information from the radio tag upon receiving the response signal from the radio tag. In the radio tag, a response processor transmits, upon receiving a signal from the radio-tag reader, a response signal in response to the signal. | ||||||
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