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    • 3. 发明授权
    • Wireless power transmission audio system and device on transmitting end and loudspeaker for use in such a system
    • 无线电力传输音频系统和用于这种系统的发射端和扬声器上的装置
    • US08929563B2
    • 2015-01-06
    • US13329457
    • 2011-12-19
    • Keisuke KinoshitaJunichi KawamuraShutai Okamura
    • Keisuke KinoshitaJunichi KawamuraShutai Okamura
    • H04B5/00H02J17/00H04L25/49
    • H02J50/12H02J17/00H02J50/80H02J50/90H04L25/4902H04R2420/07
    • The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal.
    • 无线电力传输音频系统的发射机包括:发射信号产生部分,用于产生由RF信号组成的传输信号; 接收发送发送信号的第一谐振电路; 用于感测所述发送信号的变化的检测部; 和发送信号调整部。 该系统的扬声器包括:第二谐振电路,用于通过产生磁场谐振耦合现象来接收发射信号; 以及用于再现音频信号的音频输出部分。 发射机和扬声器中的至少一个包括阻抗调整部分,其改变传输信号的传输线上的阻抗值。 当阻抗调整部分改变阻抗值时,发送信号调整部分改变发送信号的信号波形。
    • 4. 发明授权
    • Wireless power transmission system
    • 无线电力传输系统
    • US08872385B2
    • 2014-10-28
    • US13329433
    • 2011-12-19
    • Keisuke KinoshitaJunichi KawamuraShutai Okamura
    • Keisuke KinoshitaJunichi KawamuraShutai Okamura
    • H01F27/42
    • H02J50/12H02J17/00H02J50/80H02J2007/0001
    • A wireless power transmission system transmits power wirelessly from a power transmitter to a power receiver. The power transmitter includes a class E amplifier, a transmitting-end resonant circuit, a detector that detects a voltage or current waveform at a predetermined position in the class E amplifier in accordance with the impedance of the transmitting-end resonant circuit as viewed from the class E amplifier, and a signal extractor that extracts a signal according to the waveform. The power receiver includes a receiving-end resonant circuit, a rectifier circuit, a power reproducing section, and an impedance changer connected between the rectifier circuit and the power reproducing section to change its impedance. When the impedance is changed, the detector detects the waveform variation and the signal extractor extracts and outputs a signal corresponding to the waveform detected by the detector.
    • 无线电力传输系统从电力发射机向电力接收器无线发射电力。 功率发射器包括E级放大器,发射端谐振电路,检测器,其根据从发射端谐振电路的阻抗检测E级放大器中的预定位置处的电压或电流波形 E级放大器,以及根据波形提取信号的信号提取器。 功率接收器包括接收端谐振电路,整流电路,功率再生部和连接在整流电路与功率再现部之间的阻抗变换器,以改变其阻抗。 当阻抗改变时,检测器检测波形变化,并且信号提取器提取并输出与检测器检测到的波形相对应的信号。
    • 7. 发明授权
    • Encoder, decoder, encoding method, and decoding method
    • 编码器,解码器,编码方法和解码方法
    • US08458577B2
    • 2013-06-04
    • US12745216
    • 2008-12-18
    • Shutai OkamuraYutaka MurakamiMasayuki Orihashi
    • Shutai OkamuraYutaka MurakamiMasayuki Orihashi
    • G06F11/00
    • H03M13/255H03M13/1128H03M13/116H03M13/118H03M13/23H03M13/6362H03M13/6502H03M13/6527
    • There is provided an encoder that provides a termination sequence with a simple structure for LDPC-CC encoding and reduces an amount of the termination sequence transmitted to a transmission line. The LDPC-CC encoder (200) connects a first encoder (230) to a second encoder (240) to perform encoding and thereby carry out LDPC-CC encoding, the first encoder (230) performing encoding based on an partial parity check matrix for information bits (110) obtained by extracting a sequence corresponding to the information bits in a parity check matrix (100) and the second encoder (240) performing encoding based on a partial parity check matrix for parity bits (120) obtained by extracting a sequence corresponding to the parity bits in the parity check matrix (100). A termination sequence generator (210) generates a termination sequence including the same number of bits as the memory length of the first encoder (230) and provides the generated termination sequence as an input sequence.
    • 提供了一种编码器,其提供具有用于LDPC-CC编码的简单结构的终止序列,并减少发送到传输线的终止序列的量。 LDPC-CC编码器(200)将第一编码器(230)连接到第二编码器(240)以执行编码,从而执行LDPC-CC编码,第一编码器(230)基于部分奇偶校验矩阵执行编码, 通过提取与奇偶校验矩阵(100)中的信息比特相对应的序列获得的信息比特(110)和基于通过提取序列获得的奇偶校验比特(120)的部分奇偶校验矩阵执行编码的第二编码器(240) 对应于奇偶校验矩阵(100)中的奇偶校验位。 终止序列生成器(210)生成包括与第一编码器(230)的存储器长度相同数量的位的终止序列,并且将生成的终止序列提供为输入序列。
    • 8. 发明申请
    • ERROR CORRECTING DECODING DEVICE AND ERROR CORRECTING DECODING METHOD
    • 错误纠正解码设备和错误修正解码方法
    • US20130139038A1
    • 2013-05-30
    • US13814219
    • 2011-08-03
    • Naoya YosokuShutai Okamura
    • Naoya YosokuShutai Okamura
    • H03M13/13
    • H03M13/13H03M13/1111H03M13/1131H03M13/1137H03M13/116H03M13/1188H03M13/616H03M13/6527
    • The error correcting decoding device of the present invention performs Low-Density Parity-Check (LDPC) decoding which accommodates a plurality of code rates while sharing circuits to suppress increase in circuit scale. If the set code rate is a second code rate which is a higher code rate than a first code rate, a column processing and row processing calculating unit (120A) uses a distributed submatrix in which a number of columns are selected and combined, wherein the number of columns is equal in number to the number of columns with which a first submatrix is constructed from a distributed check matrix corresponding to a second check matrix which accommodates the second code rate. At this time, the column processing and row processing calculating unit (120A) uses a distributed submatrix such that the row degree is less than or equal to the row degree of the first submatrix.
    • 本发明的纠错解码装置执行低密度奇偶校验(LDPC)解码,该解码容纳多个码率,同时共享电路以抑制电路规模的增加。 如果设定码率是比第一码率高的码率的第二码率,列处理和行处理计算单元(120A)使用其中选择并组合列数的分布子矩阵,其中, 列数与从适应第二代码率的第二校验矩阵相对应的分布式校验矩阵构成第一子矩阵的列数相等。 此时,列处理和行处理计算单元(120A)使用分散子矩阵,使得行度小于或等于第一子矩阵的行度。
    • 9. 发明授权
    • Encoding device and decoding device
    • 编码设备和解码设备
    • US08429503B2
    • 2013-04-23
    • US12671188
    • 2008-07-29
    • Shutai OkamuraMasayuki OrihashiAtsushi Sumasu
    • Shutai OkamuraMasayuki OrihashiAtsushi Sumasu
    • H03M13/00
    • H03M13/1128H03M13/1102H03M13/1105H03M13/27H03M13/373H03M13/6356H03M13/6362H03M13/6516H04L1/0041H04L1/005H04L1/0057H04L1/0071
    • Disclosed are an encoding device and a decoding device which can effectively reduce the decoding failure frequency in LDPC encoding/decoding. A loss correction encoding device (120) includes a padding unit (121) which adds a padding packet to an information packet sequence; an interleave unit (122) which rearranges the padding packet and the information packet; and a loss correction encoding unit (123) which performs loss correction encoding for the packet string after the interleave. The interleave unit (122) rearranges the padding packet and the information packet according to variable nodes constituting a minimum stopping set of the inspection matrix which defines a low-density parity inspection code. The interleave unit (122) uses such a rearrangement pattern that avoids a loss correction failure by the minimum stopping set of the LDPC inspection matrix so as to reduce the probability of the loss correction failure by the minimum stopping set.
    • 公开了可以有效地降低LDPC编码/解码中的解码失败频率的编码装置和解码装置。 丢失校正编码装置(120)包括将填充分组添加到信息分组序列的填补单元(121) 交织单元(122),其重新排列所述填充分组和所述信息分组; 以及丢失校正编码单元(123),其在交织之后对分组串执行丢失校正编码。 交错单元(122)根据构成检查矩阵的最小停止集合的可变节点重新排列填充分组和信息分组,该检查矩阵定义了低密度奇偶校验检验码。 交错单元(122)使用这样的重排模式,通过LDPC检查矩阵的最小停止集合来避免丢失校正失败,从而通过最小停止集合来降低丢失校正失败的可能性。