| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | APPARATUS AND METHOD OF RECONSTRUCTING AMPLITUDE-CLIPPED SIGNAL | US11924928 | 2007-10-26 | US20090034408A1 | 2009-02-05 | Young-Doo KIM; Eung Sun Kim; Tae Soo Kwon; Ui Kun Kwon; Gi Hong Im; Dong Sik Kim |
| A method and apparatus for compensating a distortion due to a clipped amplitude when an amplitude of a signal is clipped to reduce a peak to average power ratio (PAPR) in a wireless communication system using an orthogonal frequency division multiplexing (OFDM) scheme and a transmit diversity method using an orthogonal coding.A wireless data transmission apparatus which transmits a data stream via a plurality of antennas, the apparatus including: a coding unit which Space-Time block codes a first data stream into a plurality of second data streams, the plurality of second data streams being orthogonal to each other; an inverse Fourier transform unit which performs an inverse Fourier transform of each of the Space-Time block coded second data stream and generates a plurality of time domain signals; and a plurality of amplitude clipping units which clips an amplitude of each of the plurality of generated time domain signals. | ||||||
| 82 | METHODS AND APPARATUS FOR GENERATING SYNCHRONIZATION/PILOT SEQUENCES FOR EMBEDDING IN WIRELESS SIGNALS | US12051535 | 2008-03-19 | US20090003308A1 | 2009-01-01 | Robert John BAXLEY; John Eric KLEIDER |
| An embodiment includes a method for generating a set of synchronization/pilot sequences (SPS) by generating a plurality of candidate SPS using different initial conditions. Correlations are performed among the candidate SPS to generate a plurality of correlation values, and a plurality of permutations of the candidate SPS are determined, where each permutation includes a different set of candidate SPS, and wherein each permutation includes a number, D, of candidate SPS. In addition a selected permutation is identified from the plurality of permutations, where the selected permutation corresponds to the set of SPS being generated. A system includes a transmitter adapted to generate a wireless signal in which an SPS is embedded by combining each SPS of the set with phase shifted input data, determining peak-to-average power ratios (PARs) for at least some of the combined signals, and identifying a selected combined signal based on the PARs. | ||||||
| 83 | Radio-Tag Reading System, Radio-Tag Reader, And Radio Tag | US11631677 | 2004-07-24 | US20080088414A1 | 2008-04-17 | Hiroyoshi Suga; Yukimassa Nagai |
| To obtain a radio-tag reading system that can steadily make a detection area of a radio tag match with a communication area, and can start read of ID of the radio tag, which enters the communication area, at a high speed, in a condition that a plurality of radio tags enter the communication area of a radio-tag reader at a time. The radio-tag reading system comprises a radio-tag reader 3 that includes a communication unit 31 that performs radio communication with a radio tag 2, a radio-tag detection processor 33 that allows the communication unit 31 to transmit a search signal for detecting the entrance of the radio tag 2 into a communication area in which the communication unit 31 can perform radio communication, at a predetermined time interval, to detect the entrance of the radio tag 2 into the communication area according to a response signal to the search signal, and a radio-tag information communication processor 34 that reads the radio tag information of the radio tag 2, upon receiving the response signal from the radio tag 2, and the radio tag 2 including a response processor 22 that, upon receiving a signal from the radio-tag reader 3, transmits a response signal to the signal. | ||||||
| 84 | Cable modem with integrated RF identification and methods for use therewith | US11527132 | 2006-09-26 | US20080076353A1 | 2008-03-27 | Ahmadreza (Reza) Rofougaran |
| A cable modem includes a cable transceiver that provides bidirectional broadband access to a wide area network in accordance with a first wired communication protocol. An RF transceiver provides bidirectional communication with a remote device over a short range radio frequency link. A memory module stores a secure access application. A processing module executes the secure access application, the secure access application reading identification data from the remote device via the short range radio frequency link that identifies a user. | ||||||
| 85 | RFID reader with adjustable filtering and adaptive backscatter processing | US11367061 | 2006-03-03 | US20070206705A1 | 2007-09-06 | Roger Stewart |
| A Radio Frequency Identification (RFID) reader in one embodiment of the invention includes an amplifier for amplifying an incoming RF signal, a switchable filter receiving an amplified signal from the amplifier, and mixers receiving a filtered signal from the filter. An RFID reader in another embodiment of the invention includes an RF section with an RF signal level control. A baseband section with baseband signal level control receives a signal from the RF section. The RF signal level control and the baseband signal level control are dynamically adjustable independently of each other. An RFID reader in another embodiment of the invention includes RF signal level control, and mixers receiving a signal from the RF signal level control. A level of a signal between the RF signal level control and the mixers is monitored. The RF signal level control is adjusted based on the monitored signal for preventing saturation of the mixers. Methods are also presented. | ||||||
| 86 | Half duplex device and signal processing method thereof | US10895904 | 2004-07-22 | US07095846B2 | 2006-08-22 | Yueh-Chang Chen |
| A half duplex device and signal processing method thereof. First, a signal detection unit of a signal detector of a half duplex device obtains a short-term power and long-term power. Next, a data update unit of the signal detector sets a short-term power threshold as a default threshold, determines whether the long-term power is greater than the default threshold, sets the short-term power threshold value equal to the long-term power value if the long-term power value is greater than the default threshold value, and provides smooth performance in a noisy environment. | ||||||
| 87 | Apparatus for relaying a transmission signal | US09888465 | 2001-06-25 | US20010046874A1 | 2001-11-29 | Jong Sun Kim; Seon Ho Sim; Joong Kil Kang; Soo Young Lee |
| An apparatus relays a signal transmitted from a specified base station to a mobile station in CDMA wireless telecommunications systems. To this purpose, the apparatus, installed in an area where signals transmitted from a plurality of base stations co-exist or a soft blocking occurs, operates by following the steps of receiving the signal transmitted from a specified base station having smaller number of calls than the other neighboring base stations, filtering a signal within a service frequency band from the received signal, amplifying the filtered signal, adjusting a gain of the amplified signal and finally transmitting the gain-adjusted signal to the mobile station. Accordingly, a pilot pollution phenomenon is removed and an effective call distribution is achieved, so that the efficiency in using system resources can be greatly improved. | ||||||
| 88 | INFORMATION COLLECTION SYSTEM | US16041864 | 2018-07-23 | US20190005282A1 | 2019-01-03 | Yoshihisa USAMI; Takayoshi YOKOYAMA; Yuki OWASHI; Hiroyuki MATSUI; Junichi TAKEYA |
| An information collection system includes a plurality of radio tags and a reading device. Each of the radio tags stores identification information and includes a sensor, an antenna that receives a carrier wave from the reading device, and a data transmission unit that sends measurement data including the identification information and information obtained by the sensor to the reading device after the carrier wave is received by the antenna. The plurality of radio tags send the identification information and the information obtained by the sensor with different natural periods from the data transmission units. The reading device transmits the carrier wave to each of the radio tags, receives data from each of the radio tags, and obtains the data. | ||||||
| 89 | SENSING SYSTEM | US16024119 | 2018-06-29 | US20180307872A1 | 2018-10-25 | Yoshihisa USAMI; Takayoshi YOKOYAMA; Yuki OWASHI; Hiroyuki MATSUI; Junichi TAKEYA |
| A sensing system includes an electronic tag and a reading device that transmits and receives information to and from the electronic tag. The reading device includes a transmission unit that sends an alternating-current radio wave including a high-frequency component and a low-frequency component. The electronic tag does not include a power supply and includes a receiving unit that obtains a power supply voltage from the high-frequency component of the alternating-current radio wave and obtains a clock signal from the low-frequency component and a return unit that maintains a maximum amplitude of the clock signal and sends a combination of information and the clock signal as a return signal. The reading device further includes a processing unit that decodes the return signal sent from the electronic tag on the basis of the clock signal. | ||||||
| 90 | ON-VEHICLE DEVICE, MOBILE DEVICE, AND WIRELESS COMMUNICATION SYSTEM FOR VEHICLES | US15991731 | 2018-05-29 | US20180276923A1 | 2018-09-27 | NAOKI HAYASHI |
| A transmitter of an on-vehicle device transmits a request signal from a first antenna, and transmits first measurement signals at different timings from the first antenna and a second antenna. The receiver receives a first response signal including information on transmission intensities of a second measurement signals to be transmitted from the first and second antennas. The transmitter further transmits the second measurement signals at different timings from the first and second antennas. The second measurement signals have transmission intensities respectively set based on the information on transmission intensities included in the first response signal. The receiver receives a second response signal transmitted when a relationship between the reception intensities of the second measurement signals transmitted from the first and second antennas agrees with the information on the transmission intensities included in the first response signal. | ||||||
| 91 | WIRELESS COMMUNICATION SYSTEM, ELECTRONIC APPARATUS, READER/WRITER | US15750827 | 2017-02-09 | US20180232547A1 | 2018-08-16 | Masayuki HAYAKAWA; Seiji TANAKA |
| The present invention addresses the problem of preventing the malfunction of an electronic apparatus containing an RFID module with a wired communication port. A reader/writer compares the model of setting information that was inputted by a user and is to be written, with the model of a temperature controller wirelessly transmitted from an RFID module of the temperature controller, and if the models match one another, the setting information corresponding to the model of the temperature controller is wirelessly written to the memory of the RFID module. | ||||||
| 92 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM | US15750351 | 2016-07-27 | US20180225486A1 | 2018-08-09 | Katsuyuki TERUYAMA |
| There is provided an information processing device including: a processing unit configured to select a first processing mode in which static information is transmitted or a second processing mode in which dynamic information according to a process is transmitted on a basis of a predetermined request recognized in contactless communication with an external device and to perform a process corresponding to a selected processing mode. The processing unit selects the first processing mode in a case in which the recognized predetermined request is a read request for causing information to be transmitted and selects the second processing mode in a case in which the recognized predetermined request is a write request for causing information to be written in a recording medium. | ||||||
| 93 | READER FOR RFID TAG FOR NEAR-FIELD WIRELESS COMMUNICATION AND NEAR-FIELD WIRELESS COMMUNICATION SYSTEM | US15854228 | 2017-12-26 | US20180129840A1 | 2018-05-10 | Masakazu Tanikawa; Katsuyoshi Onishi |
| In a reader for an 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. | ||||||
| 94 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM, AND INFORMATION PROCESSING SYSTEM | US15560304 | 2016-02-24 | US20180059208A1 | 2018-03-01 | YU HAMADA |
| [Object] To provide an information processing device, information processing method, program, and information processing system that are capable of appropriately performing processes based on radio wave intensities. [Solution] Provided is the information processing device including: an acquisition unit configured to acquire a measurement result of a radio wave; an extraction unit configured to extract a measurement result indicating an intensity included in a range from top 10% to top 30% from a plurality of measurement results acquired by the acquisition unit; and a processing unit configured to perform a predetermined process by using the measurement result extracted by the extraction unit. | ||||||
| 95 | COMMUNICATION DEVICE AND COMMUNICATION METHOD | US15545135 | 2016-01-28 | US20180013596A1 | 2018-01-11 | Hiroaki Nakano; Uichiro Omae; Hiroaki Fujita; Masayoshi Abe |
| A communication device according to the disclosure includes: a signal generator that generates, on the basis of the first signal received from a communication partner through a coil, a second signal that synchronizes with the first signal; a first modulator configured to be able to modulate the first signal on the basis of the second signal; a second modulator configured to be able to modulate the first signal; and a communication controller that selects, on the basis of the first signal, whichever modulator is to be operated, from the first modulator and the second modulator. | ||||||
| 96 | Real-time blood detection system | US15731343 | 2017-05-31 | US20170340254A1 | 2017-11-30 | Alice McKinstry Davis; Dennis Willard Davis; Russell Denning Davis |
| Disclosed is a system for real-time detection and annunciation of blood associated with menstruation and surgical wounds. The system comprises a real-time, wide area blood detector, 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. | ||||||
| 97 | Method for determining the timing of the receipt of a radio message | US15026997 | 2014-09-26 | US09804254B2 | 2017-10-31 | Nils Willart; Bengt Johansson; Anders Bergström |
| A method for determining the time of receipt by a radio receiver of a binary coded radio message emitted by a sender. A radio signal containing the message is received by the receiver. An analog electrical signal is generated, sampled and optionally demodulated. The data content of the message is determined based upon the demodulated signal as a stream of data bits. The stream of data bits comprises a predetermined signal element whose time of receipt is determined. A digitally stored, constructed comparison signal is created based upon the stream of data bits. The constructed comparison signal is constructed to correspond to the sampled signal, in that a time variable which maximizes a correlation between the constructed comparison signal and the sampled signal is determined, and in that the time variable is then used to correct the time determination of the receipt of the predetermined signal element. | ||||||
| 98 | Amplifier circuit, antenna module, and radio communication device | US14762060 | 2014-02-04 | US09473199B2 | 2016-10-18 | Masaaki Tsuji; Koji Kawahata; Nobunari Tsukamoto; Takashi Otsuki |
| An amplifier circuit performs an amplification of a carrier signal received by a transmitting and receiving unit. The amplifier circuit includes an impedance matching circuit that performs matching of an impedance of the amplifier circuit when the transmitting and receiving unit and the amplifier circuit are connected. A superposition wave generating unit generates a superposition wave which is superimposed on the received carrier signal. A driver outputs an amplified carrier signal which is obtained by adding the superposition wave to the received carrier signal. An amplitude detecting unit detects whether the received carrier signal is a predetermined carrier signal superimposed with a predetermined communication signal, based on changes of an amplitude value of the received carrier signal. When the predetermined carrier signal is detected, the amplifier circuit outputs the amplified carrier signal. | ||||||
| 99 | WAVEFORM SYNTHESIS FOR RFID TRANSMITTERS | US15037205 | 2013-12-13 | US20160294601A1 | 2016-10-06 | Thomas Frederick |
| A waveform synthesis technique for radio frequency identification (RFID) transmitters and an RFID system making us of the technique are disclosed. The RFID transmitter in example embodiments synthesizes a continuous transmitter waveform from a symbol alphabet without Nyquist or interpolation filters. High spectral occupancy waveforms are achieved which include the ability to do both linear and nonlinear predistortion with no increase in computational load once the signal set has been adapted to compensate for linear and nonlinear distortion in the transmitter analog circuitry. A polarity generator can be used to impart the required polarity to each waveform. The RFID transmitter can be employed in RFID readers to reduce the computational requirements of the digital signal processor (DSP). | ||||||
| 100 | METHOD FOR DETERMINING THE TIMING OF THE RECEIPT OF A RADIO MESSAGE | US15026997 | 2014-09-26 | US20160259031A1 | 2016-09-08 | Nils WILLART; Bengt JOHANSSON; Anders BERGSTRÖM |
| Method for determining the time of receipt by a radio receiver (320,330,340) of a binary coded radio message emitted by a sender (310), whereby the radio signal is received by the receiver so that an analogue electrical signal is achieved, which analogue signal is sampled and optionally demodulated, whereby the data content of the message is determined based upon the demodulated signal as a stream of data bits, which stream of data bits comprises a predetermined signal element whose time of receipt is determined. The invention is characterised in that a digitally stored, constructed comparison signal is created based upon the said stream of data bits, so that the constructed comparison signal is constructed to correspond to the sampled signal, in that a time variable which maximizes a correlation between the constructed comparison signal and the sampled signal is determined, and in that the time variable is then used to correct the said time determination of the receipt of the predetermined signal element. | ||||||
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