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    • 41. 发明授权
    • Optical disk drive
    • 光盘驱动器
    • US5751680A
    • 1998-05-12
    • US762436
    • 1996-12-09
    • Toshiaki IshibashiKunikazu OhnishiMasayuki InoueYoshio Suzuki
    • Toshiaki IshibashiKunikazu OhnishiMasayuki InoueYoshio Suzuki
    • G11B7/09G11B7/095G11B7/125G11B7/135H04B1/20
    • G11B7/0956
    • Concerning a tilt detecting optical pickup in an optical disk playback device, a highly precise tilt error signal can be obtained by a simple structure. As a structure for achieving this, there are provided a diffraction grating, on which a grating groove pattern has been engraved, capable of adding coma aberration components to + and - primary diffracted light on an optical path between a laser diode, which becomes a playback light source, and an optical disk, and a light-receiving element capable of receiving the diffracted light. The output from a signal processing circuit capable of calculating a difference between each light receiving strength becomes a tilt error signal. By deforming the aforesaid grating groove pattern, the layout of the coma aberration components can be changed. Also, a tilt error signal can be obtained from a difference in bit error numbers in playback signals from diffracted light having coma aberration. Addition of coma aberration components to the diffracted light makes it possible to easily improve the sensitivity of a tilt error signal to the tilt angle.
    • 关于光盘重放装置中的倾斜检测光学拾取器,可以通过简单的结构获得高精度的倾斜误差信号。 作为实现这一点的结构,提供了一种衍射光栅,其上刻有格栅槽图案,能够在成为回放的激光二极管之间的光路上将偏光成分加到+和 - 次衍射光上 光源和光盘,以及能够接收衍射光的光接收元件。 来自能够计算每个光接收强度之差的信号处理电路的输出成为倾斜误差信号。 通过使上述格栅凹槽图案变形,可以改变彗形像差分量的布局。 此外,可以从具有彗形像差的衍射光的重放信号中的位错误数的差异获得倾斜误差信号。 向衍射光添加彗形像差成分可以容易地提高倾斜误差信号对倾斜角的灵敏度。
    • 43. 发明申请
    • HEADPHONE
    • 耳机
    • US20130003983A1
    • 2013-01-03
    • US13636407
    • 2011-03-22
    • Toshiyuki HataToshiaki Ishibashi
    • Toshiyuki HataToshiaki Ishibashi
    • H04R1/10G10K11/16
    • H04R3/005G10K11/178G10K2210/1081G10K2210/3215G10L21/0208H04R1/10H04R1/406H04R5/033H04R2420/01
    • A headphone includes: a pair of earphone units each of which includes a speaker and a plurality of microphones which are arranged at a back side of the speaker in a given pattern and through which external sounds are picked up; a sound pickup signal generator configured to generate a plurality of sound pickup signals, each of which has a given directivity, by using a plurality of signals outputted from the plurality of microphones; an external source sound input section through which an external source sound signal from an external source is inputted; and a sound emission signal generator configured to generate sound emission signals, which are to be inputted to the speakers of the earphone units and each of which has a directivity, by using the external source sound signal and the plurality of sound pickup signals.
    • 耳机包括:一对耳机单元,每个耳机单元包括扬声器和多个麦克风,它们以给定的图案布置在扬声器的后侧,并通过该麦克风拾取外部声音; 拾音信号发生器,被配置为通过使用从所述多个麦克风输出的多个信号来产生具有给定方向性的多个拾音信号; 来自外部源的外部源声音信号通过该外部源声音输入部输入; 以及声音发射信号发生器,被配置为通过使用外部源声音信号和多个声音拾取信号来生成要被输入到耳机单元的扬声器并且每个具有方向性的声音发射信号。
    • 44. 发明授权
    • Sound emission and collection apparatus and control method of sound emission and collection apparatus
    • 声音发射采集仪器及声发射采集仪的控制方法
    • US08300839B2
    • 2012-10-30
    • US12302653
    • 2007-05-24
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • H04R29/00
    • H04R1/406H04R1/403H04R27/00H04R2201/403H04R2201/405
    • A level ratio calculation circuit calculates average signal level data of signal level data corresponding to each sound collection beam signal, and calculates a level ratio between the average signal level data and each of the signal level data. Since a diffraction sound is substantially equal to all the signal level data, a diffraction sound component of the average signal level data also becomes substantially equal. On the other hand, a collection sound from a speaker is specific to the signal level data of the corresponding sound collection beam signal. Therefore, at the level ratio, the portion corresponding to the diffraction sound is flat and a data level becomes high locally in only the portion corresponding to the collection sound. By using this, the sound collection beam signal including the collection sound is detected.
    • 电平比计算电路计算与每个声音采集束信号相对应的信号电平数据的平均信号电平数据,并且计算平均信号电平数据与每个信号电平数据之间的电平比。 由于衍射声音基本上等于所有信号电平数据,平均信号电平数据的衍射声分量也变得基本相等。 另一方面,来自扬声器的收集声音特定于对应的声音采集束信号的信号电平数据。 因此,在电平比上,对应于衍射声的部分是平坦的,并且数据电平仅在与收集声音对应的部分中局部变高。 通过使用它,检测包括收集声音的声音采集束信号。
    • 46. 发明申请
    • LOUDSPEAKER SYSTEM AND SOUND EMISSION AND COLLECTION METHOD
    • 扬声器系统和声发射和收集方法
    • US20110268287A1
    • 2011-11-03
    • US13143836
    • 2010-01-08
    • Toshiaki Ishibashi
    • Toshiaki Ishibashi
    • H04B3/20H04R1/00
    • H04R27/00H04R1/403H04R1/406
    • A loudspeaker system with a high degree of versatility, which, even when a microphone or a person speaking moves, can adequately response to the movement is provided. A plurality of linkage terminals 2 are connected to a central control device 1. A lecturer operates the central control device 1 to designate whether each of the linkage terminals 2 functions as a speaker or as a microphone. It is possible to, through the central control device 1, designate which linkage terminals 2 function as a microphone or as a speaker. Therefore, the lecturer can switch with one touch operation the locations and the number of microphones and speakers in accordance with the situation during a lecture, such as a situation where the lecturer makes a lecture, that where a questioner is asking a question, or that where the master of meeting gives an explanation. For example, an assistant is not required to go to the trouble of bringing a microphone to a questioner, it is possible to adequately response to the moving state of the person speaking, and the versatility and the convenience are extremely high.
    • 具有高度通用性的扬声器系统,即使在麦克风或人讲话移动时,也可以充分响应运动。 多个联动终端2连接到中央控制装置1.讲师操作中央控制装置1以指定联动终端2中的每个是作为扬声器还是麦克风。 通过中央控制装置1可以指定哪个连接端子2用作麦克风或扬声器。 因此,讲师可以根据演讲中的情况,例如讲师做演讲的情况,在提问者提出问题的情况下,单击操作,切换麦克风和扬声器的位置和数量,或者 会议大师做了解释。 例如,助手不需要将麦克风带到询问者的麻烦,可以充分响应说话人的移动状态,多功能性和方便性极高。
    • 47. 发明申请
    • Position Detecting System, Audio Device and Terminal Device Used in the Position Detecting System
    • 位置检测系统,位置检测系统中使用的音频设备和终端设备
    • US20100322435A1
    • 2010-12-23
    • US12085724
    • 2006-11-29
    • Satoshi SuzukiToshiaki IshibashiRyo Tanaka
    • Satoshi SuzukiToshiaki IshibashiRyo Tanaka
    • H04R3/12
    • G01S5/18G01S5/0027G01S5/26H04R1/323H04R1/403H04R3/12H04R2430/01H04R2430/20H04S7/301
    • A position detecting system is provided, which is capable of effectively preventing erroneous detection of audio to be measured. The position detecting system includes a terminal device that inputs an audio signal from an audio device and a microphone. The audio device sequentially inputs measurement audio signals that have been formed by two or more audio signals of different frequencies to a speaker and receives a notification signal, wherein the report signal indicates that the audio of the measurement audio signal has been collected from the terminal device. The audio device clocks a time t1 and a time t2, namely clocks after the audio of the measurement audio signal is output from the speakers SP1-SP2 until the notification signals of the measurement audio signals are received by the signal receiving unit. The audio device calculates the position of the microphone by using the times t1 and t2. For each frequency component of the measurement audio signal, when an audio signal exceeding a predetermined level is inputted from the microphone, the terminal device detects it as a component of the measurement audio signal and transmits a notification signal upon detection of the measurement audio signal.
    • 提供一种位置检测系统,其能够有效地防止要测量的音频的错误检测。 位置检测系统包括从音频设备和麦克风输入音频信号的终端设备。 音频装置将已经由两个或更多个不同频率的音频信号形成的测量音频信号顺序地输入到扬声器并接收通知信号,其中报告信号指示测量音频信号的音频已从终端设备收集 。 音频设备对时间t1和时间t2进行计时,即从扬声器SP1-SP2输出测量音频信号的音频之后的时钟,直到由信号接收单元接收测量音频信号的通知信号。 音频设备使用时间t1和t2计算麦克风的位置。 对于测量音频信号的每个频率分量,当从麦克风输入超过预定电平的音频信号时,终端设备将其作为测量音频信号的分量进行检测,并且在检测到测量音频信号时发送通知信号。
    • 48. 发明申请
    • Array speaker system and array microphone system
    • 阵列扬声器系统和阵列麦克风系统
    • US20100220877A1
    • 2010-09-02
    • US11988625
    • 2006-03-28
    • Toshiaki IshibashiTakuya Tamaru
    • Toshiaki IshibashiTakuya Tamaru
    • H04R25/00
    • H04R1/403H04R1/406H04R3/12H04R2201/401H04R2201/403
    • A plurality of speakers are linked in the present invention. The linked position of each speaker can be detected. Audio signal is input to any one of the master speakers. The master speaker synchronizes the other linked speakers, and supplies audio signals to other speakers. It also controls the delay quantity of the speaker unit of each speaker. For a single speaker, the apparent width of this array speaker system becomes twice the width, and the speaker unit spacing becomes one third the spacing. Consequently, the frequency band at which direction is controllable becomes enhanced.Additionally, a plurality of microphone devices are linked at the top, bottom, left and right sides in the present invention. The linked position of each microphone device can be detected. Audio data is output from each microphone device to the master microphone device. The master microphone device synchronizes with other linked microphone devices, treats them as array microphones in the entire linked array microphone system, and controls the delay quantity of the microphone unit of the microphone device. For a single microphone device, the apparent width of this array microphone system becomes twice the width, and the microphone unit spacing becomes one-third the spacing. Consequently, the frequency band at which direction is controllable becomes enhanced.
    • 在本发明中连接多个扬声器。 可以检测每个扬声器的链接位置。 音频信号输入到任何一个主扬声器。 主扬声器同步其他连接的扬声器,并将音频信号提供给其他扬声器。 它还控制每个扬声器的扬声器单元的延迟量。 对于单个扬声器,该阵列扬声器系统的表观宽度变为宽度的两倍,并且扬声器单元间距变成间距的三分之一。 因此,方向可控制的频带增强。 此外,在本发明中,多个麦克风装置在顶部,底部,左侧和右侧连接。 可以检测每个麦克风装置的链接位置。 音频数据从每个麦克风设备输出到主麦克风设备。 主麦克风设备与其他链接的麦克风设备同步,将其视为整个链接阵列麦克风系统中的阵列麦克风,并控制麦克风设备的麦克风单元的延迟量。 对于单个麦克风设备,该阵列麦克风系统的表观宽度变为宽度的两倍,麦克风单元间距变成间距的三分之一。 因此,方向可控制的频带增强。
    • 50. 发明申请
    • AUDIO CONFERENCE APPARATUS AND AUDIO CONFERENCE SYSTEM
    • 音频会议设备和音频会议系统
    • US20090310794A1
    • 2009-12-17
    • US12441698
    • 2007-12-17
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • H04B3/20
    • H04M3/56G10L2021/02082G10L2021/02161H04M3/567H04M3/568H04M9/082H04M2250/62H04R3/02
    • To provide an audio conference apparatus and an audio conference system which can smoothly proceed with the audio conference by removing a recursion sound of the conference voice is achieved. An audio conference apparatus 1 outputs ring tones from corresponding channels before a communication control unit 12 outputs audio signals from the unused channels (S1 to S3). Speakers SP1 to SP16 emits the ring tone from predetermined sound source positions corresponding to the respective channels. Microphones MIC1A to MIC16A and microphones MIC1B to MIC16B collect audio signals including a recursion sound of the ring tone. The echo cancel unit 20 generates a pseudo-recursion sound signal on the basis of an input signal, and subtracts the pseudo-recursion sound signal from the collected audio signals. An audio conference system is configured to connect a plurality of the audio conference apparatuses to each other.
    • 提供可以通过去除会议语音的递归声音来平滑地进行音频会议的音频会议装置和音频会议系统。 音频会议装置1在通信控制单元12从未使用的信道(S1至S3)输出音频信号之前,从对应的信道输出铃音。 扬声器SP1至SP16从对应于相应通道的预定声源位置发出铃声。 麦克风MIC1A至MIC16A和麦克风MIC1B至MIC16B收集音频信号,包括铃声的递归声音。 回波消除单元20基于输入信号产生伪递归声音信号,并从收集的音频信号中减去伪递归声音信号。 音频会议系统被配置为将多个音频会议装置彼此连接。