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1. 发明申请

US20080247332A1 Network Configuration Management Method, Network Band Management Method, Network Participation Method, and Communication Terminal Device 审中-公开
标题翻译：网络配置管理方法，网络带宽管理方法，网络参与方式和通信终端设备
公开(公告)号：US20080247332A1
公开(公告)日：2008-10-09
申请号：US10587044
申请日：2004-12-14
申请人： Toshimitsu Sato , Sadayuki Inoue , Tetsuro Shida , Tsuyoshi Kasaura , Soichiro Matsumoto , Masahiro Tsujishita
发明人： Toshimitsu Sato , Sadayuki Inoue , Tetsuro Shida , Tsuyoshi Kasaura , Soichiro Matsumoto , Masahiro Tsujishita
IPC分类号： H04L12/28
CPC分类号： H04W84/00 , H04L41/082 , H04L41/0856 , H04W8/22 , H04W48/08 , H04W48/16
摘要： A network configuration management includes the steps of sending from the management terminal (1100) participation terminal information stored in the management terminal; receiving by the participation terminal (1200, 1300, 1400) other than the management terminal, participation terminal information sent from the management terminal (1100); judging by the participation terminal other than the management terminal, whether or not the participation terminal can communicate with another participation terminal device that is participating in a wireless network (1010); sending a communication availability judgment result which is obtained by the judging step, from the participation terminal other than the management terminal to the management terminal (1100); and determining by the management terminal (1100), a participation terminal that should be excluded from the wireless network (1010) in accordance with the communication availability judgment result, and deleting by the management terminal device, from the participation terminal information the participation terminal that should be excluded from the wireless network (1010), thereby updating the participation terminal information which is stored in the management terminal.
摘要翻译：网络配置管理包括从管理终端（1100）发送存储在管理终端中的参与终端信息的步骤; 由管理终端以外的参与终端（1200,1300,1400）接收从管理终端（1100）发送的参与终端信息; 通过由管理终端以外的参与终端进行判断，参与终端能否与正在参与无线网络的另一参与终端装置进行通信（1010）。从管理终端以外的参与终端向管理终端（1100）发送通过判断步骤获得的通信可用性判断结果; 以及由管理终端（1100）根据通信可用性判断结果确定应从无线网络（1010）中排除的参与终端，以及由管理终端装置从参与终端信息中删除参与终端，应该从无线网络（1010）中排除，从而更新存储在管理终端中的参与终端信息。

2. 发明授权

US06795559B1 Impulse noise reducer detecting impulse noise from an audio signal 失效
标题翻译：脉冲降噪器检测来自音频信号的脉冲噪声
公开(公告)号：US06795559B1
公开(公告)日：2004-09-21
申请号：US09723201
申请日：2000-11-28
申请人： Kenichi Taura , Masahiro Tsujishita , Masayuki Tsuji , Masayuki Ishida
发明人： Kenichi Taura , Masahiro Tsujishita , Masayuki Tsuji , Masayuki Ishida
IPC分类号： H04B1500
CPC分类号： H04B1/1027
摘要： An impulse noise reducer detects impulse noise in an audio signal by detecting and smoothing the high-frequency amplitude of the audio signal, attenuating the non-smoothed amplitude according to the smoothed amplitude, and comparing the attenuated amplitude with a threshold. Impulse noise is discriminated from high-frequency audio components because the latter tend to occur in longer-lasting bursts and are therefore attenuated more strongly. The impulse noise reducer is simplified because it does not have to perform intermediate-frequency signal processing, and its sensitivity is not affected by adjacent-channel signals because these signals are substantially absent from the audio signal. The impulse noise reducer can be implemented by digital signal processing, and is suitable for use in a medium-wave AM audio broadcast receiver.
摘要翻译：脉冲噪声降低器通过检测和平滑音频信号的高频振幅来检测音频信号中的脉冲噪声，根据平滑的幅度衰减非平滑幅度，并将衰减幅度与阈值进行比较。脉冲噪声与高频音频分量区分开来，因为后者往往会发生在持续较长的脉冲串中，因此会更强烈地衰减。由于不需要执行中频信号处理，所以脉冲噪声减少器被简化，并且其灵敏度不受相邻信道信号的影响，因为这些信号基本上不存在于音频信号中。脉冲减噪器可以通过数字信号处理实现，适用于中波AM音频广播接收机。

3. 发明授权

US06385261B1 Impulse noise detector and noise reduction system 有权
标题翻译：脉冲噪声检测器和降噪系统
公开(公告)号：US06385261B1
公开(公告)日：2002-05-07
申请号：US09233173
申请日：1999-01-19
申请人： Masayuki Tsuji , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
发明人： Masayuki Tsuji , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
IPC分类号： H03D104
CPC分类号： H04B1/10
摘要： An impulse noise detector detects impulse noise in an audio signal by filtering out the audio components of the signal, then comparing an envelope of a filtered signal with a threshold obtained as a moving average of the envelope. Short-duration impulse noise is thereby detected without detecting tone bursts and other fast-rising signals of longer duration. The envelope may be taken directly from the filtered signal, or from a difference signal obtained from a preliminary envelope of the filtered signal, to emphasize impulse noise when distorted audio components leak into the filtered signal.
摘要翻译：脉冲噪声检测器通过滤除信号的音频分量来检测音频信号中的脉冲噪声，然后将滤波信号的包络与作为包络的移动平均值获得的阈值进行比较。从而在没有检测到较长持续时间的音调脉冲串和其它快速上升信号的情况下检测短时脉冲噪声。可以从经滤波的信号或从滤波信号的初始包络获得的差分信号直接取包络线，以便在失真的音频分量泄漏到滤波信号中时强调脉冲噪声。

4. 发明授权

US5867503A Digital sound broadcasting receiver and automatic phase controlling method therefor 失效
标题翻译：数字声音广播接收机及其自动相位控制方法
公开(公告)号：US5867503A
公开(公告)日：1999-02-02
申请号：US785506
申请日：1997-01-17
申请人： Yoshiharu Ohsuga , Masahiro Tsujishita , Tadatoshi Ohkubo , Kenichi Taura
发明人： Yoshiharu Ohsuga , Masahiro Tsujishita , Tadatoshi Ohkubo , Kenichi Taura
IPC分类号： H03J7/04 , H04H40/18 , H04H60/11 , H04L1/00 , H04L1/20 , H04L27/26 , G06F11/00 , H03C5/00
CPC分类号： H04L27/2657 , H03J7/04 , H04H40/18 , H04H60/11 , H04L1/0057 , H04L1/20 , H04L27/2679 , H04H2201/20
摘要： A digital sound broadcasting receiver and method receives a radio wave from a digital sound broadcasting station, demodulates the radio wave into baseband signals at a tuner, subjects the signals to demodulation, performs error detection and error correction at signal processors to obtain digital data, and inputs the digital data into an audio circuit to obtain audio or data output. A CRC error rate detector 13 for a fast information channel (FIC) for APC pseudo lock releasing action on demodulating the signals is arranged to determine, based on the possibility of an error rate of an error-detecting code (CRC) of the FIC, whether an APC pseudo lock state occurs, and to control releasing action for the APC pseudo lock state.
摘要翻译：数字声音广播接收机和方法从数字声音广播台接收无线电波，在调谐器处将无线电波解调为基带信号，对信号进行解调，在信号处理器处执行错误检测和纠错以获得数字数据，以及将数字数据输入音频电路以获得音频或数据输出。布置了用于解调信号的用于APC伪锁释放动作的快速信息信道（FIC）的CRC错误率检测器13，基于FIC的错误检测码（CRC）的错误率的可能性，是否发生APC伪锁定状态，并且控制APC伪锁定状态的释放动作。

5. 发明授权

US07756233B2 Data receiving device and data receiving method 失效
标题翻译：数据接收装置和数据接收方法
公开(公告)号：US07756233B2
公开(公告)日：2010-07-13
申请号：US10588380
申请日：2005-02-02
申请人： Sadayuki Inoue , Toshimitsu Sato , Tsuyoshi Kasaura , Tetsuro Shida , Takashi Fujiwara , Soichiro Matsumoto , Masahiro Tsujishita
发明人： Sadayuki Inoue , Toshimitsu Sato , Tsuyoshi Kasaura , Tetsuro Shida , Takashi Fujiwara , Soichiro Matsumoto , Masahiro Tsujishita
IPC分类号： H04L7/00
CPC分类号： H04N21/4344 , H04J3/0632 , H04N5/4401 , H04N21/23608 , H04N21/4305 , H04N21/4325 , H04N21/43615 , H04N21/43632 , H04N21/43637 , H04N21/44
摘要： A receiving device (50) is provided to allow appropriate clock regeneration even for a VBR TS when a stream including video and audio data, such as an MPEG2 TS, is transmitted or received in real time through a network having jitter. When the received packet data is stored in a memory (53) and the packet data is output in accordance with time information added to the received packet data, a clock frequency deviation between a sending device and a receiving device is calculated on the basis of the integration result of the amount of the received packets temporarily stored in the memory (53), the number of the received packets which have been processed, and the measurement result of the integration time used for integrating the amount of the received packets. A read timing offset of the received packet is obtained on the basis of the calculation result of the clock frequency deviation.
摘要翻译：当通过具有抖动的网络实时发送或接收包括诸如MPEG2 TS的视频和音频数据的流时，提供接收设备（50），以便即使对于VBR TS也允许适当的时钟再生。当接收到的分组数据被存储在存储器（53）中并且根据添加到接收分组数据的时间信息输出分组数据时，基于以下方式计算发送设备和接收设备之间的时钟频率偏差临时存储在存储器（53）中的接收到的分组的量的积分结果，已经处理的接收分组的数量以及用于积分接收分组量的积分时间的测量结果。基于时钟频率偏差的计算结果，获得接收到的分组的读取定时偏移。

6. 发明授权

US06690805B1 Audio signal noise reduction system 失效
标题翻译：音频信号降噪系统
公开(公告)号：US06690805B1
公开(公告)日：2004-02-10
申请号：US09315035
申请日：1999-05-20
申请人： Masayuki Tsuji , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
发明人： Masayuki Tsuji , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
IPC分类号： H04R1500
CPC分类号： H04B1/1661 , H03G3/345
摘要： An audio signal noise reduction system comprises a noise detecting circuit 11 for detecting a noise from an audio signal and outputting a detection signal indicating a start time and an end time of a noise period of the noise, an LPF 12 for extracting a low frequency component of the audio signal, an HPF 14 for extracting intermediate and high frequency components of the audio signal, a polynomial interpolation circuit 13 for polynomial-interpolating the noise period of the low frequency component being extracted, a mute circuit 15 for muting an output level of the noise period of the intermediate and high frequency components being extracted, and a signal synthesizing circuit 16 for synthesizing the low frequency component whose noise period is polynomial-interpolated and the intermediate and high frequency components the level of whose noise period is suppressed to thus output the audio signal.
摘要翻译：音频信号噪声降低系统包括：噪声检测电路11，用于检测来自音频信号的噪声，并输出表示噪声的噪声周期的开始时间和结束时间的检测信号; LPF12，用于提取低频分量音频信号的中频和高频分量的HPF14，用于多项式插值所提取的低频分量的噪声周期的多项式插值电路13，用于使音频信号的输出电平静音的静音电路15，中间和高频分量的噪声周期被提取，以及信号合成电路16，用于合成噪声周期被多项式插值的低频分量，并且中间和高频分量抑制其噪声周期的电平从而输出音频信号。

7. 发明授权

US6028900A Digital broadcast receiver 失效
公开(公告)号：US6028900A
公开(公告)日：2000-02-22
申请号：US861072
申请日：1997-05-21
申请人： Kenichi Taura , Masahiro Tsujishita , Tadatoshi Ohkubo , Masayuki Ishida , Yoshiharu Ohsuga
发明人： Kenichi Taura , Masahiro Tsujishita , Tadatoshi Ohkubo , Masayuki Ishida , Yoshiharu Ohsuga
IPC分类号： H04L27/22 , H04J11/00 , H04L1/00 , H04L27/26 , H04L27/06
CPC分类号： H04L27/2656 , H04L27/2659 , H04L27/266 , H04L27/2675 , H04L27/2679 , H04L1/0054
摘要： To control the oscillation frequency of a local oscillator, a digital broadcast receiver demodulates a phase-reference symbol contained in an orthogonal frequency-division multiplexed broadcast signal, modifies the resulting frequency-domain data by multiplication with complex conjugates of known data encoded in the phase-reference signal, under different assumed frequency offsets, converts the modified data to time-domain data, and thereby detects a first frequency error equal to a multiple of the subcarrier spacing and a second frequency error not exceeding the subcarrier spacing. Differential phase error is also detected. The oscillation frequency is adjusted to correct the first frequency error and differential phase error; then the second frequency error is used to correct for ambiguity in the differential phase error.

8. 发明授权

US06993309B2 Noise removal apparatus and an FM receiver 失效
公开(公告)号：US06993309B2
公开(公告)日：2006-01-31
申请号：US09949755
申请日：2001-09-12
申请人： Masahiro Tsujishita , Masayuki Tsuji , Kenichi Taura , Masayuki Ishida
发明人： Masahiro Tsujishita , Masayuki Tsuji , Kenichi Taura , Masayuki Ishida
IPC分类号： H04B1/10
CPC分类号： H04H40/72 , H04B1/1081 , H04B1/1661
摘要： A noise removal unit mounted on a car radio according to the invention removes multipath noise and pulse noise from FM demodulated signals. At this time, the noise removal unit removes all of the multipath noise. Also, in case where the generation density of noise is high, the noise removal unit reduces the detection sensitivity so as not to detect pulse noise, particularly of small level, as noise. Comparing to multipath noise, pulse noise is noise rendering a large correction error than multipath noise. Therefore, in case where the generation density of pulse noise is high, by adapting the unit not to remove pulse noise of small level, it is made possible to reduce distortion of the FM demodulated signals to a minimum. Accordingly, it is made to reduce deterioration of the quality of FM voices to a minimum.

9. 发明授权

US06788923B2 Receiver noise reduction with expanding gated pulses 失效
标题翻译：接收机降噪与扩展选通脉冲
公开(公告)号：US06788923B2
公开(公告)日：2004-09-07
申请号：US09783098
申请日：2001-02-15
申请人： Masahiro Tsujishita , Kenichi Taura , Masayuki Tsuji , Masayuki Ishida
发明人： Masahiro Tsujishita , Kenichi Taura , Masayuki Tsuji , Masayuki Ishida
IPC分类号： H04B110
CPC分类号： H03G3/345
摘要： A noise reducer generates a gate signal by detecting noise in a demodulated signal, and changes the lengths the gate pulses indicating the presence of noise according to the electric-field strength of a radio signal from which the demodulated signal has been obtained. The demodulated signal is modified during intervals indicated by the gate pulses, to reduce the noise. The amount of change of the gate-pulse lengths is preferably increased as the electric-field strength decreases. Noise can then be removed satisfactorily under even weak electric-field conditions.
摘要翻译：噪声降低器通过检测解调信号中的噪声来产生门信号，并且根据获得解调信号的无线电信号的电场强度改变指示噪声存在的门脉冲的长度。在由门脉冲指示的间隔期间修改解调信号，以减少噪声。栅极脉冲长度的变化量优选随着电场强度的降低而增加。在弱电场条件下，可以令人满意地去除噪声。

10. 发明授权

US06665526B2 Multipath noise reducer, audio output circuit, and FM receiver 失效
标题翻译：多路径减噪器，音频输出电路和FM接收器
公开(公告)号：US06665526B2
公开(公告)日：2003-12-16
申请号：US09735647
申请日：2000-12-14
申请人： Masayuki Tsuji , Eizi Asano , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
发明人： Masayuki Tsuji , Eizi Asano , Masahiro Tsujishita , Kenichi Taura , Masayuki Ishida
IPC分类号： H04B110
CPC分类号： H04B1/1669
摘要： A multipath noise reducer detects and removes the individual noise spikes occurring in an interval of multipath noise, thereby reducing the multipath noise with relatively little distortion of the output signal. The threshold signal used to detect multipath noise is varied depending on reception conditions. The gate pulses indicating the presence of multipath noise spikes are preferably expanded by variable amounts, depending on both reception conditions and the signal level. Multipath noise spikes are preferably replaced by a smoothed signal. These provisions further reduce perceived distortion of the audio output signal.
摘要翻译：多路径降噪器检测和去除在多径噪声间隔中发生的各个噪声尖峰，从而以相对较小的输出信号失真减小多路径噪声。用于检测多路径噪声的阈值信号根据接收条件而变化。优选地，根据接收条件和信号电平两者，扩展指示存在多径噪声尖峰的门脉冲可变量。多路径噪声尖峰优选地被平滑的信号代替。这些规定进一步降低了音频输出信号的感知失真。

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