专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060115096A1 Adaptive noise reduction method and device 失效
标题翻译：自适应降噪方法及装置
公开(公告)号：US20060115096A1
公开(公告)日：2006-06-01
申请号：US10523638
申请日：2003-08-01
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： A61F11/06
CPC分类号： G11B20/10009 , H03H21/0012
摘要： An adaptive noise reduction method and apparatus capable of reducing efficiently variable period noise from a main input is provided. A variable period pulse signal and a sampling clock are supplied to a counter 32 within an adaptive signal processor 30, where an input period is counted by the sampling clock and the counted value is supplied to a timing generator 34. From the timing pulse, a variable read-address generator 33 generates in turn Xv addresses 0 to M and a write-address generator 35 generates in turn Xk−1 addresses 0 to M, respectively, and the results are input to an accumulator 36 as the read address and write address. A product 2μEk of an error signal Ek multiplied by a step gain μ and data Wk read from the address Xk are input to an adder 38, whose output signal is delayed by a unit sample time 37 and is written into Xk−1 address. An adaptive coefficient Wv is read from Xv address and input to a (−) terminal of an adder 9 through a data interpolation means 39. Accordingly, pitch of noise waveform to be reduced can be variable with a change in a period of motor noise occurring when the revolution period is changed by disc motor control of DVD-RAM, by revolution speed control of other motors, and revolution period change on starting a motor and the like. Therefore, the renewal of adaptive filter coefficient becomes almost unnecessary, thus allowing noise reduction to be performed without degrading a noise canceling effect.
摘要翻译：提供了一种能够有效地降低来自主输入的可变周期噪声的自适应噪声降低方法和装置。可变周期脉冲信号和采样时钟被提供给自适应信号处理器30内的计数器32，其中输入周期由采样时钟计数，并且计数值被提供给定时发生器34.从定时脉冲，可变读地址生成器33依次生成Xv地址0到M，并且写地址生成器35分别产生Xk-1地址0到M，并且将结果作为读地址和写地址输入到累加器36 。误差信号Ek乘以阶跃增益mu和从地址Xk读取的数据Wk的乘积2μEk被输入到加法器38，加法器38的输出信号被延迟单位采样时间37并写入Xk-1地址。自适应系数Wv从Xv地址读出，并通过数据插补装置39输入到加法器9的（ - ）端。因此，要减少的噪声波形的间距可随着发生电动机噪声周期的变化而变化当通过DVD-RAM的盘式电动机控制改变旋转周期时，通过其它电动机的转速控制以及启动电动机等时的转动周期变化。因此，自适应滤波器系数的更新变得几乎不必要，因此可以在不降低噪声消除效果的情况下执行降噪。

2. 发明授权

US4970126A Highly corrosion-resistant, multi-layer coated steel sheets 失效
标题翻译：高耐腐蚀，多层涂层钢板
公开(公告)号：US4970126A
公开(公告)日：1990-11-13
申请号：US162603
申请日：1988-03-01
申请人： Takeshi Adaniya , Masaaki Yamashita , Takahiro Kubota , Norio Nikaido , Yoshiaki Miyosawa , Tadashi Nishimoto , Kazuhiko Ozawa
发明人： Takeshi Adaniya , Masaaki Yamashita , Takahiro Kubota , Norio Nikaido , Yoshiaki Miyosawa , Tadashi Nishimoto , Kazuhiko Ozawa
IPC分类号： B05D7/00 , C23C22/83 , C23C28/00
CPC分类号： B05D7/51 , C23C22/83 , C23C28/00 , B05D2202/10 , B05D2350/20 , C23C2222/20 , Y10T428/12549 , Y10T428/12569 , Y10T428/12611 , Y10T428/12618 , Y10T428/12799
摘要： This invention relates to a highly corrosion-resistant, multi-layer coated steel sheet, and includes an undercoat film obtained by galvanization or zinc-alloy plating and a chromate coated film thereon, on which a resin-composition film is further applied, comprising an organic high-molecular weight resin having a glass transision temperature of 343.degree. to 423.degree. K. and soluble in organic solvent and hydrophobic silica.For the purpose of improvement of corrosion preventiveness, a sparingly water soluble Cr compound may be contained in this resin composition film. Together with this sparingly water soluble Cr compound, a di- or tri-alkoxysilane compound may be also contained in the resin composition film.

3. 发明授权

US08331583B2 Noise reducing apparatus and noise reducing method 失效
标题翻译：降噪装置和降噪方法
公开(公告)号：US08331583B2
公开(公告)日：2012-12-11
申请号：US12707906
申请日：2010-02-18
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00 , G10L21/00
CPC分类号： G10L21/0208 , G10L21/0264 , G10L25/90 , G11B20/24
摘要： A noise reducing apparatus includes: a voice signal inputting unit inputting an input voice signal; a noise occurrence period detecting unit detecting a noise occurrence period; a noise removing unit removing a noise for the noise occurrence period; a generation source signal acquiring unit acquiring a generation source signal with a time duration corresponding to a time duration corresponding to the noise occurrence period; a pitch calculating unit calculating a pitch of an input voice signal interval; an interval signal setting unit setting interval signals divided in each unit period interval; an interpolation signal generating unit generating an interpolation signal with the time duration corresponding to the noise occurrence period and alternately arranging the interval signal in a forward time direction and the interval signal in a backward time direction; and a combining unit combining the interpolation signal and the input voice signal, from which the noise is removed.
摘要翻译：降噪装置包括：语音信号输入单元，输入输入的语音信号; 噪声发生周期检测单元，检测噪声发生周期; 噪声去除单元去除噪声发生周期的噪声; 生成源信号获取单元，获取具有对应于与噪声发生周期相对应的持续时间的持续时间的发生源信号; 音调计算单元，计算输入语音信号间隔的音高; 间隔信号设定单元，以每单位周期间隔分割设定间隔信号; 内插信号生成单元，生成具有与噪声发生期间对应的持续时间的内插信号，并且将时间间隔信号交替排列在前进时间方向上，并且间隔信号在后退时间方向上交替排列; 以及组合单元，组合插值信号和去除噪声的输入语音信号。

4. 发明授权

US08036398B2 Circuit and apparatus having a delay unit for reducing periodic noise 失效
标题翻译：具有用于减少周期性噪声的延迟单元的电路和装置
公开(公告)号：US08036398B2
公开(公告)日：2011-10-11
申请号：US11440261
申请日：2006-05-23
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00
CPC分类号： H03H21/0023 , H03H17/0294
摘要： A signal processing circuit includes a delaying unit that is configured to carry out delay processing on the basis of periodicity information synchronized with the periodicity of a periodic noise included in an input signal and a filter unit that is configured to receive the input signal and has a notch characteristic at a frequency f. The frequency f satisfies f=N/T, where N represents an integer equal to or greater than one and T represents a delaying time applied by the delaying unit.
摘要翻译：信号处理电路包括：延迟单元，被配置为基于与包括在输入信号中的周期性噪声的周期性同步的周期性信息和被配置为接收输入信号的滤波器单元执行延迟处理，并且具有频率f处的陷波特性。频率f满足f = N / T，其中N表示等于或大于1的整数，T表示延迟单元施加的延迟时间。

5. 发明授权

US07711557B2 Audio signal noise reduction device and method 失效
标题翻译：音频信号降噪装置及方法
公开(公告)号：US07711557B2
公开(公告)日：2010-05-04
申请号：US11604403
申请日：2006-11-27
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： G10L704/226
CPC分类号： G10L21/01 , G10L21/0208 , G10L21/0232 , G10L21/0264
摘要： An audio signal reduction device that generates a gap period in accordance with a noise generation period of noise included in an input audio signal. Noise is removed from the audio signal, and the level envelope of the audio signal is continuously detected. A coefficient for the level envelope in the gap period is generated in accordance with the level envelope detection and is used to modulate an interpolated signal. The noise-removed audio signal and the modulated interpolated signal are mixed; and the mixed signal is output in a period corresponding to the gap period, while the audio signal is output, as is, not in the gap period.
摘要翻译：一种音频信号降低装置，其根据包括在输入音频信号中的噪声的噪声产生周期产生间隙周期。从音频信号中消除噪声，并连续检测音频信号的电平包络。根据电平包络检测产生间隙周期内的电平包络的系数，并用于调制内插信号。噪声去除音频信号和调制内插信号混合; 并且在与间隙周期相对应的周期中输出混合信号，而音频信号原样输出不在间隙周期中。

6. 发明授权

US08150061B2 Sound generating method, sound generating apparatus, sound reproducing method, and sound reproducing apparatus 有权
标题翻译：声音产生方法，声音产生装置，声音再现方法和声音再现装置
公开(公告)号：US08150061B2
公开(公告)日：2012-04-03
申请号：US11209724
申请日：2005-08-24
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04R3/00
CPC分类号： H04S7/30 , H04R3/005 , H04R2499/15
摘要： The present invention provides a sound generating method of generating sound signals related to a video signal, which comprises a step of generating independently each of the sound signals matched to a horizontal direction and a vertical direction of a video, and a step of allowing the horizontal and the vertical sound signals that have been generated to be reproduced independently with horizontal sound output means and vertical sound output means, respectively.
摘要翻译：本发明提供了一种产生与视频信号有关的声音信号的声音产生方法，其包括独立地产生与视频的水平方向和垂直方向匹配的每个声音信号的步骤，以及允许水平以及分别使用水平声音输出装置和垂直声音输出装置独立地再生的垂直声音信号。

7. 发明授权

US07697699B2 Method of and apparatus for reducing noise 失效
标题翻译：减少噪音的方法和装置
公开(公告)号：US07697699B2
公开(公告)日：2010-04-13
申请号：US11103116
申请日：2005-04-11
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： G10L21/02
CPC分类号： G10L21/0208
摘要： An apparatus for reducing noise includes a comparator for generating a noise timing signal corresponding to a noise producing period of noise introduced from a noise source and contained in an audio signal, a gap time generator for generating a gap period in which to remove noise from the audio signal, a selector switch for selectively outputting the audio signal and a noise-removed signal, a level detector for detecting a signal level of the audio signal, and a masking degree determining unit for determining from the signal level detected by the level detector a gap period for which the audio signal is masked by the human auditory system. The selector switch outputs the noise-removed signal in a period corresponding to the gap period within the noise producing period of the noise timing signal, and outputs the audio signal in other than the gap period.
摘要翻译：一种用于降低噪声的装置包括：比较器，用于产生对应于从噪声源引入并包含在音频信号中的产生噪声的噪声周期的噪声定时信号;间隙时间发生器，用于产生用于从音频信号，用于选择性地输出音频信号和去除噪声的信号的选择开关，用于检测音频信号的信号电平的电平检测器，以及屏蔽度确定单元，用于根据电平检测器a检测到的信号电平音频信号由人类听觉系统掩蔽的间隔期间。选择器开关在与噪声定时信号的噪声产生周期内的间隙周期相对应的周期内输出噪声去除信号，并且输出除了间隙周期之外的音频信号。

8. 发明申请

US20050238183A1 Automatic wind noise reduction circuit and automatic wind noise reduction method 有权
标题翻译：自动风降噪电路和自动降噪方法
公开(公告)号：US20050238183A1
公开(公告)日：2005-10-27
申请号：US10525112
申请日：2003-08-19
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04R3/04 , G10L21/02 , H04R3/00 , H04S5/02 , H04B15/00
CPC分类号： H04R3/005 , H04R2410/07
摘要： An object is to provide an automatic wind noise reducing circuit and an automatic wind noise reducing method, which are capable of coping with a multichanneling trend of audio signals, and improving performance as well as the degree of freedom in system design. Arithmetic units (26, 27, 28) obtain added signals of audio signals of audio channels excluding respective selected audio channels, which are selected so as to be different from each other. Arithmetic units (29, 30, 31) subtract respective added signals of the arithmetic units (26, 27, 28) from corresponding audio signals of the selected audio channels. The subtraction signals from the arithmetic units (29, 30, 31) are subjected to a band limit control and limited to a frequency band of a wind noise signal by LPFs (21, 23, 25). After level-controlling of the subtraction signals from the arithmetic units (29, 30, 31) which are limited to the wind noise signal band by variable level amplifiers (32, 33, 34), the subtraction signals are subtracted from respective audio signals of corresponding audio channels.
摘要翻译：目的是提供一种自动降噪电路和自动降噪方法，能够应对音频信号的多信号化趋势，提高系统设计的性能和自由度。算术单元（26,27,28）获得除了相互选择的音频通道之外的音频信号的相加信号，这些音频信号被选择为彼此不同。算术单元（29,30,31）从所选择的音频信道的相应音频信号中减去运算单元（26,27,28）的各个相加信号。来自算术单元（29,30,31）的减法信号经受频带限制控制，并被LPF（21,23,25）限制在风噪声信号的频带上。在通过可变电平放大器（32,33,34）限制到风噪声信号频带的算术单元（29,30,31）的减法信号进行电平控制之后，从相应的音频信号中减去相减信号相应的音频通道。

9. 发明授权

US5506620A Recording/reproducing apparatus for providing indications of abnormal states 失效
标题翻译：用于提供异常状态的指示的记录/再现装置
公开(公告)号：US5506620A
公开(公告)日：1996-04-09
申请号：US327214
申请日：1994-10-21
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： G01R31/36 , G11B31/00 , G11B33/10 , H04N5/232 , H04N5/765 , H04N17/06 , H04N5/225 , H04N5/222
CPC分类号： G01R31/3648 , G11B31/006 , G11B33/10 , H04N17/06 , H04N5/23293 , G01R31/3675 , H04N5/765
摘要： An electronic apparatus for providing indications on a display device representative of respective ones of a plurality of abnormal states of the apparatus. The apparatus includes a detection device for detecting a state of the electronic apparatus from among a plurality of states; a judgment device for judging whether the detected state is one of a plurality of predetermined abnormal states and for providing therefrom an output signal representative of the detected state; and a display controller device responsive to the output signal for controlling the display device so as to cause a respective indication to be displayed on the display device in a predetermined color. The display controller device may be arranged so as to control the display device so as to cause an indication representative of the remaining capacity of a battery to be displayed on the display device in one of a plurality of predetermined colors, in which the color of the indication is dependent upon the detected remaining capacity of the battery.
摘要翻译：一种电子设备，用于在表示设备的多个异常状态中的各个异常状态的显示设备上提供指示。该装置包括用于从多个状态中检测电子设备的状态的检测装置; 判断装置，用于判断检测到的状态是否为多个预定异常状态之一，并从其中提供表示检测状态的输出信号; 以及响应于输出信号的显示控制器装置，用于控制显示装置，以使各个指示以预定颜色显示在显示装置上。显示控制器装置可以被布置为控制显示装置，以便以多种预定颜色中的一种将表示电池的剩余容量的指示显示在显示装置上，其中，指示取决于检测到的电池的剩余容量。

10. 发明授权

US08411165B2 Microphone apparatus, reproducing apparatus, and image taking apparatus 失效
标题翻译：麦克风装置，再现装置和摄像装置
公开(公告)号：US08411165B2
公开(公告)日：2013-04-02
申请号：US10968700
申请日：2004-10-19
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04N5/76 , H04R3/00 , H03M7/00
CPC分类号： H04R3/005 , H04N5/23293 , H04R2201/403 , H04R2430/23
摘要： A microphone apparatus of the present invention is applied to a camera including a panel type view finder for displaying a picture taken by the camera, a touch panel for pointing a desired position of the picture displayed on the view finder, determining circuit for determining a direction of the real picture in accordance with the position pointed by the touch panel, a microphone device having a plurality of microphone units for collecting a sound that comes from the picture taken by the camera; and directivity generating circuit for generating a sound directivity signal with which the microphone device collects the sound coming from the direction determined by the determining circuit.
摘要翻译：本发明的麦克风装置应用于包括用于显示照相机拍摄的照片的面板型取景器的相机，用于指示在取景器上显示的图像的期望位置的触摸面板，用于确定方向的确定电路根据触摸面板指示的位置的实际图像，具有多个麦克风单元的麦克风装置，用于收集来自照相机拍摄的图像的声音; 以及指向性产生电路，用于产生声音指向性信号，麦克风装置利用该方向信号收集来自由确定电路确定的方向的声音。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式