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1. 发明授权

US4559642A Phased-array sound pickup apparatus 失效
标题翻译：相控阵拾音装置
公开(公告)号：US4559642A
公开(公告)日：1985-12-17
申请号：US524777
申请日：1983-08-19
申请人： Naotaka Miyaji , Atsushi Sakamoto , Makoto Iwahara
发明人： Naotaka Miyaji , Atsushi Sakamoto , Makoto Iwahara
IPC分类号： G10K11/34 , H04R1/32 , H04R1/40 , H04R3/00 , H04R1/20
CPC分类号： H04R3/005 , G10K11/346 , H04R1/406
摘要： A phased-array sound pickup apparatus has an array of directional microphones having individual directivity patterns equally oriented in a given direction. The directivity patterns of the microphones combine into the main lobe of the array. A plurality of variable delay circuits are connected to be responsive respectively to individual signals from the microphones for providing incremental delays to the individual signals and combining the delayed signals for delivery as an output of the apparatus. A delay control circuit is coupled to the variable delay circuits for generating a delay control signal for controlling the amount of the incremental delays to cause the main lobe to be steered at an angle to the given direction as a function of the delay control signal.
摘要翻译：相控阵拾音装置具有定向麦克风阵列，其具有在给定方向上等同取向的各个方向性图案。麦克风的方向性图案组合成阵列的主瓣。连接多个可变延迟电路以分别响应来自麦克风的各个信号，以向各个信号提供增量延迟，并组合延迟的信号作为装置的输出。延迟控制电路耦合到可变延迟电路，用于产生用于控制增量延迟量的延迟控制信号，以使主瓣以与延迟控制信号的函数成一定角度转向给定方向。

2. 发明授权

US4696043A Microphone apparatus having a variable directivity pattern 失效
标题翻译：具有可变方向性图案的麦克风装置
公开(公告)号：US4696043A
公开(公告)日：1987-09-22
申请号：US766280
申请日：1985-08-16
申请人： Makoto Iwahara , Naotaka Miyaji , Atsushi Sakamoto
发明人： Makoto Iwahara , Naotaka Miyaji , Atsushi Sakamoto
IPC分类号： G10K11/34 , H04R3/00 , H04R1/40
CPC分类号： G10K11/348 , H04R3/005
摘要： A microphone apparatus includes an array of equally spaced microphones divided into a center subarray and a pair of side subarrays located one on each side of the center subarray. A first weighting network having a plurality of weighting factors impresses a first weighting function on signals from the center subarray. Second and third weighting networks each having a plurality of weighting factors impress second and third weighting functions respectively on signals from the side subarrays. The first, second and third weighting functions correspond respectively to center and side portions of a total function. Signals from the first weighting network are summed in a first adder, signals from the second and third weighting networks being summed in a second adder and cmbined with the output of the first adder in a third adder to produce an output signal. A variable directivity pattern is obtained by a level setting means which allows adjustment of the level of the output signal from the second adder in a predetermined relationship with the level of the output signal from the first adder.
摘要翻译：麦克风装置包括被分成中心子阵列的等间距麦克风的阵列和位于中心子阵列每侧的一对侧子阵列。具有多个加权因子的第一加权网络对来自中心子阵列的信号施加第一加权函数。每个具有多个加权因子的第二和第三加权网络分别对来自侧面子阵列的信号施加第二和第三加权函数。第一，第二和第三加权函数分别对应于总功能的中心和侧部。来自第一加权网络的信号在第一加法器中相加，来自第二和第三加权网络的信号在第二加法器中相加，并在第三加法器中与第一加法器的输出相加，以产生输出信号。可变方向性图案通过电平设置装置获得，该电平设置装置允许以与来自第一加法器的输出信号的电平预定关系来调整来自第二加法器的输出信号的电平。

3. 发明授权

US4521908A Phased-array sound pickup apparatus having no unwanted response pattern 失效
标题翻译：没有不必要的响应模式的相控阵拾音装置
公开(公告)号：US4521908A
公开(公告)日：1985-06-04
申请号：US528100
申请日：1983-08-31
申请人： Naotaka Miyaji , Atsushi Sakamoto , Makoto Iwahara
发明人： Naotaka Miyaji , Atsushi Sakamoto , Makoto Iwahara
IPC分类号： G10K11/34 , H04R3/00 , H04M1/20
CPC分类号： G10K11/346 , H04R3/005 , Y10S367/905
摘要： In a phased-array sound pickup apparatus microphones are divided into a first and second subarrays, the microphones of the first subarray having individual unidirectional response patterns oriented on one side of the normal to the array and the microphones of the second subarray having their response patterns oriented on the other side of the normal so that the array's main lobe assumes different orientation from the orientation of the microphone's individual response patterns so that the array's unwanted back lobe falls outside of the microphone's response patterns. The microphones may be grouped into a plurality of pairs and the signals from the paired microphones are mixed so that different individual response patterns are generated in correlation with the array's main front lobe to cause the unwanted back lobe to occur outside of the individual response patterns.
摘要翻译：在相控阵拾音装置中，麦克风被分成第一和第二子阵列，第一子阵列的麦克风具有定向在阵列的法线的一侧上的单独的单向响应图案，并且第二子阵列的麦克风具有它们的响应模式定向在法线的另一侧，使得阵列的主瓣呈现与麦克风的各个响应图案的取向不同的方位，使得阵列的不需要的后瓣落在麦克风的响应图案之外。麦克风可以被分组成多个对，并且来自配对的麦克风的信号被混合，使得与阵列的主前沿相关地产生不同的个体响应模式，以使不需要的后瓣在各个响应模式之外发生。

4. 发明授权

US4739418A Information signal recording disc recorded with stereoscopic television signal 失效
标题翻译：以立体电视信号记录的信息信号记录盘
公开(公告)号：US4739418A
公开(公告)日：1988-04-19
申请号：US840588
申请日：1986-03-17
申请人： Makoto Iwahara , Kiyoaki Suzuki , Hidetsugu Suzuki , Atsushi Sakamoto
发明人： Makoto Iwahara , Kiyoaki Suzuki , Hidetsugu Suzuki , Atsushi Sakamoto
IPC分类号： G11B21/08 , G11B27/30 , H04N5/76 , H04N5/92 , H04N13/00
CPC分类号： G11B21/085 , G11B27/3054 , H04N5/7605 , H04N5/9205 , G11B2220/20 , Y10S358/907
摘要： An information signal recording disc is recorded with a stereoscopic television signal comprising a stereoscopic video signal and audio signals. The disc comprises a spiral track made up of a plurality of track turns, and video signals related to four fields are recorded on each of the plurality of track turns. Each track turn is time-sequentially recorded with right-eye and left-eye video signals of mutually different field numbers out of the right-eye and left-eye video signals of a simultaneous stereoscopic television signal in a sequence of field numbers together with audio signals, so that the right-eye video signal and the left-eye video signal are respectively recorded for a time period of two fields in each track turn. The right-eye and left-eye video signals related to identical fields are recorded side by side to each other in two mutually adjacent track turns. A predetermined sequence with which the right-eye and left-eye video signals are recorded on the spiral track is repeated with a period of eight fields.
摘要翻译：用包括立体视频信号和音频信号的立体电视信号记录信息信号记录盘。盘包括由多个轨道匝组成的螺旋轨道，并且与多个轨道匝中的每一个记录有与四个场相关的视频信号。时间顺序地记录具有相同不同场号的右眼和左眼视频信号的时间顺序记录在场序列中的同时立体电视信号的右眼和左眼视频信号以及音频信号，使得右眼视频信号和左眼视频信号分别在每个轨道转弯中记录两个场的时间段。与相同场相关的右眼和左眼视频信号在两个相互相邻的轨道匝中彼此并排记录。以8个字段的周期重复在螺旋轨道上记录右眼和左眼视频信号的预定顺序。

5. 发明授权

US4703506A Directional microphone apparatus 失效
标题翻译：定向麦克风设备
公开(公告)号：US4703506A
公开(公告)日：1987-10-27
申请号：US888057
申请日：1986-07-22
申请人： Atsushi Sakamoto , Makoto Iwahara
发明人： Atsushi Sakamoto , Makoto Iwahara
IPC分类号： H04R1/40 , H04R3/00
CPC分类号： H04R1/406 , H04R3/005
摘要： A directional microphone apparatus includes an array of at least three sets of microphone units, circuits for processing the output signals from the microphone units to produce a first signal which varies in accordance with the second order bidirectional sound pressure gradient characteristic of the array, weighting circuits for applying respective weighting coefficients to the output signals from the microphone units in accordance with a desired shape of directivity response characteristic, to produce corresponding weighted signals which are combined to form a second signal. The first and second signals are combined to produce an output signal which exhibits sharp directivity even at relatively low frequencies in the audio range.
摘要翻译：定向麦克风装置包括至少三组麦克风单元的阵列，用于处理来自麦克风单元的输出信号以产生根据阵列的二阶双向声压梯度特性变化的第一信号的电路，加权电路用于根据期望的方向性响应特性的形状将相应的加权系数应用于来自麦克风单元的输出信号，以产生组合以形成第二信号的相应的加权信号。第一和第二信号被组合以产生甚至在音频范围中的相对低的频率下表现出清晰方向性的输出信号。

6. 发明授权

US4672434A Stereoscopic television system and apparatus with 4 to 1 interlace display 失效
标题翻译：立体电视系统和具有4到1隔行显示的设备
公开(公告)号：US4672434A
公开(公告)日：1987-06-09
申请号：US838385
申请日：1986-03-11
申请人： Kiyoaki Suzuki , Makoto Iwahara , Hidetsugu Suzuki , Atsushi Sakamoto
发明人： Kiyoaki Suzuki , Makoto Iwahara , Hidetsugu Suzuki , Atsushi Sakamoto
IPC分类号： H04N13/04 , H04N13/00
CPC分类号： H04N13/0438 , H04N13/0003 , H04N13/0497
摘要： A stereoscopic television system and apparatus comprise a memory for storing right-eye information related to odd and even fields and left-eye information related to the odd and even fields, a circuit for producing a main scanning direction synchronizing signal for synchronizing a scanning in a vertical direction of a reproduced picture and a sub scanning direction synchronizing signal for synchronizing a scanning in a horizontal direction of the reproduced picture, where the sub scanning direction synchronizing signal has a frequency which is m.+-.1/4 times a frequency of the main scanning direction synchronizing signal and m is a natural number, and a display device for reproducing and displaying in synchronism with the main and sub scanning direction synchronizing signals the right-eye information related to the odd and even fields and the left-eye information related to the odd and even fields which are successively read out from the memory in synchronism with the main scanning direction synchronizing signal.
摘要翻译：立体电视系统和装置包括用于存储与奇数和偶数场相关的右眼信息和与奇数和偶数场相关的左眼信息的存储器，用于产生用于同步扫描的主扫描方向同步信号的电路再现图像的垂直方向和用于使再现图像的水平方向上的扫描同步的副扫描方向同步信号，其中副扫描方向同步信号的频率为主要频率的m +/- 1/4倍扫描方向同步信号和m是自然数，并且显示装置用于与主扫描方向和副扫描方向同步地同步信号再现和显示与奇数和偶数场有关的右眼信息和与与主扫描方向同步地从存储器中连续地读出的奇数和偶数场表示同步信号。

7. 发明授权

US4143244A Binaural sound reproducing system 失效
标题翻译：双重声音再现系统
公开(公告)号：US4143244A
公开(公告)日：1979-03-06
申请号：US752964
申请日：1976-12-21
申请人： Makoto Iwahara , Fumio Maruyama , Goro Fujiki , Toshinori Mori , Norio Hiyama , Mitsuru Kikuchi
发明人： Makoto Iwahara , Fumio Maruyama , Goro Fujiki , Toshinori Mori , Norio Hiyama , Mitsuru Kikuchi
IPC分类号： H04S1/00 , H04R5/04
CPC分类号： H04S1/005
摘要： A binaural sound reproducing system includes a transducer for translating the recorded binaural information into an electrical signal on each of separate channels and a convolution integrator on each separate channel connected to receive the output from the transducer to compensate for acoustical differences resulting from the facial difference between the dummy head used for recording the binaural signal and a particular listener.

8. 发明授权

US4137510A Frequency band dividing filter 失效
标题翻译：频带分频滤波器
公开(公告)号：US4137510A
公开(公告)日：1979-01-30
申请号：US888561
申请日：1978-03-20
申请人： Makoto Iwahara
发明人： Makoto Iwahara
IPC分类号： H03H11/34 , H04R3/14 , H03H7/46
CPC分类号： H03H11/34 , H04R3/14
摘要： A frequency band dividing filter comprises at least two unit circuits connected in cascade connection of at least two stages, and at least one supplemental delay circuit. Each of the unit circuits comprises a low-pass filter having a specific filtering frequency band with a steep cut-off characteristic, a delay circuit connected in parallel with said low-pass filter and having a frequency phase characteristic substantially equal to the frequency phase characteristic of said low-pass filter in the pass band thereof, and a subtraction circuit connected to the output sides of said low-pass filter and said delay circuit thereby to carry out subtraction of the outputs of said low-pass filter and said delay circuit. The supplemental delay circuit is connected in parallel with the second stage unit circuit, which is connected to the first stage unit circuit in cascade connection, and has the same characteristic as the characteristic of the delay circuit of the second stage unit circuit.
摘要翻译：频带分割滤波器包括至少两个连接在至少两级的级联中的单元电路和至少一个辅助延迟电路。每个单元电路包括具有陡峭截止特性的特定滤波频带的低通滤波器，与所述低通滤波器并联连接并具有基本上等于频率相位特性的频率相位特性的延迟电路的所述低通滤波器和所述延迟电路的输出相减，所述减法电路连接到所述低通滤波器的输出侧和所述延迟电路，从而执行所述低通滤波器和所述延迟电路的输出的相减。补充延迟电路与第二级单元电路并联连接，第二级单元电路以级联方式连接到第一级单元电路，并且具有与第二级单元电路的延迟电路的特性相同的特性。

9. 发明授权

US4628525A M-S type stereophonic microphone 失效
标题翻译： M-S型立体声麦克风
公开(公告)号：US4628525A
公开(公告)日：1986-12-09
申请号：US709209
申请日：1985-03-07
申请人： Makoto Iwahara , Hiroshi Ogawa
发明人： Makoto Iwahara , Hiroshi Ogawa
IPC分类号： H04R1/02 , H04R1/08 , H04R1/40 , H04R5/027 , H04R5/00
CPC分类号： H04R1/086 , H04R5/027
摘要： An M-S type stereophonic microphone comprises a mid microphone unit having a main axis thereof directed to the front of the M-S type stereophonic microphone, a side microphone unit having a main axis thereof directed to the side of the M-S type stereophonic microphone and perpendicular to the direction of the main axis of the mid microphone unit, a unit support body for unitarily supporting the mid and side microphone units, a main microphone body frame, and a resilient support mechanism comprising resilient support members for resiliently supporting the unit support body on the frame. The resilient support mechanism resiliently supports the unit support body so that the unit support body is movable in the main axis direction of the mid microphone unit and in the main axis direction of the side microphone unit.
摘要翻译： MS型立体声麦克风包括具有主轴指向MS型立体声麦克风前部的中麦克风单元，侧麦克风单元，其主轴指向MS型立体声麦克风侧并垂直于方向中间麦克风单元的主轴线，用于一体地支撑中间和侧面麦克风单元的单元支撑体，主麦克风主体框架和弹性支撑机构，其包括弹性支撑构件，用于将单元支撑体弹性地支撑在框架上。弹性支撑机构弹性地支撑单元支撑体，使得单元支撑体可在中间麦克风单元的主轴线方向和侧麦克风单元的主轴线方向上移动。

10. 发明授权

US4349698A Audio signal translation with no delay elements 失效
标题翻译：音频信号转换，无延迟元件
公开(公告)号：US4349698A
公开(公告)日：1982-09-14
申请号：US160543
申请日：1980-06-18
申请人： Makoto Iwahara
发明人： Makoto Iwahara
IPC分类号： H04S1/00 , H04S5/00
CPC分类号： H04S1/005 , H04S1/002
摘要： Spatially correlated input audio signals are combined in a first combination of adder and subtracter to produce an input summation signal and an input difference signal, which are respectively translated by first and second filter circuits. The transfer function of the first filter circuit describes the relationship between the input summation signal and a summation of output audio signals and the transfer function of the second filter circuit describes the relationship between the input difference signal and a difference between the output audio signals. The translated signals are combined in a second combination of adder and subtracter to produce the output audio signals. Each of the filter circuits is designed with a minimum amount of phase shift which allows elimination of delay elements.
摘要翻译：空间相关的输入音频信号在加法器和减法器的第一组合中组合以产生分别由第一和第二滤波器电路转换的输入求和信号和输入差分信号。第一滤波器电路的传递函数描述输入和信号与输出音频信号的和的关系，第二滤波器电路的传递函数描述输入差分信号与输出音频信号之间的差值之间的关系。转换的信号以加法器和减法器的第二组合组合以产生输出音频信号。每个滤波器电路被设计为具有最小量的相移，其允许消除延迟元件。

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