公开(公告)号：US4831636A

公开(公告)日：1989-05-16

申请号：US134818

申请日：1987-12-18

申请人： Tomohiko Taniguchi ,  Kohei Iseda ,  Yoshihiro Tomita ,  Fumio Amano ,  Shigeyuki Unagami ,  Shoji Tominaga

发明人： Tomohiko Taniguchi ,  Kohei Iseda ,  Yoshihiro Tomita ,  Fumio Amano ,  Shigeyuki Unagami ,  Shoji Tominaga

IPC分类号： G06T9/00 ,  H04B14/04 ,  H04B14/06

CPC分类号： H04B14/046 ,  G06T9/005 ,  H04B14/068

摘要： Coding transmission equipment wherein an plurality of adaptive coding units having different processing characteristics are provided, and the adaptive coding unit having the optimum processing characteristic for a current input signal is selected from among the plurality of adaptive coding units, and an output signal from the optimum adaptive coding unit and the unit number thereof are transmitted to the receiver side. At the receiver side, the processing characteristic of a decoder is changed to become the optimum processing characteristic indicated by the received unit number, whereby a high quality recovered signal is realized.

摘要翻译： 编码传输设备，其中提供具有不同处理特性的多个自适应编码单元，并且从多个自适应编码单元中选择具有用于当前输入信号的最佳处理特性的自适应编码单元，以及来自最佳 自适应编码单元及其单元号被发送到接收机侧。 在接收机侧，将解码器的处理特性改变为由接收到的单元号表示的最佳处理特性，从而实现高质量的恢复信号。

公开(公告)号：US4951269A

公开(公告)日：1990-08-21

申请号：US216907

申请日：1988-06-24

申请人： Fumio Amano ,  Mohammad R. Asharif ,  Shigeyuki Unagami ,  Yoshihiro Sakai

发明人： Fumio Amano ,  Mohammad R. Asharif ,  Shigeyuki Unagami ,  Yoshihiro Sakai

IPC分类号： H03H21/00 ,  H04B3/23

CPC分类号： H04B3/23 ,  H03H21/00 ,  H03H21/0027 ,  Y10S367/901 ,  Y10S367/903

摘要： An echo canceller in a system, having a long impulse response such as in an acoustic system, which employs a fast Fourier transform to transform input data represented in the time domain into signals represented in the frequency domain to reduce calculations. To solve the problem of a long delay, the impulse response length is divided into a plurality of blocks. Each block then has a decreased number of samples within each block. Thus, a fast Fourier transform and finite impulse response type digital filtering are effected, so that the processing delay is decreased while the amount of calculations is kept small.

摘要翻译： PCT No.PCT / JP87 / 00833 Sec。 371日期1988年6月24日第 102（e）日期1988年6月24日PCT提交1987年10月29日PCT公布。 第WO88 / 03341号公报 日期：1988年5月5日。在具有诸如在声学系统中的长脉冲响应的系统中的回波消除器，其采用快速傅里叶变换来将在时域中表示的输入数据变换成在频域中表示的信号以减少计算 。 为了解决长延迟的问题，脉冲响应长度被分成多个块。 每个块在每个块内具有减少的采样数。 因此，实现快速傅里叶变换和有限脉冲响应型数字滤波，使得处理延迟减小，同时计算量保持较小。

公开(公告)号：US5091955A

公开(公告)日：1992-02-25

申请号：US545499

申请日：1990-06-29

申请人： Kohei Iseda ,  Kazumi Satoh ,  Hideaki Kurihara ,  Fumio Amano ,  Shigeyuki Unagami ,  Koji Okazaki

发明人： Kohei Iseda ,  Kazumi Satoh ,  Hideaki Kurihara ,  Fumio Amano ,  Shigeyuki Unagami ,  Koji Okazaki

IPC分类号： G10L19/18 ,  H03M3/04 ,  H03M7/42

CPC分类号： H03M7/42 ,  G10L19/18 ,  H03M3/042

摘要： Disclosed is a voice coding/decoding system having a transmitting part for transmitting a coded signal of an input voice signal at a bit rate lower than a predetermined transmission bit rate and a receiving part for receiving and decoding the coded signal transmitted from the transmission part. To enable the coding and transmitting of an input voice signal in an optimum state without passing through a buffer memory and without having a negative influence on the coder, the transmitting part provides coders for coding the input voice signal and groups of entropy coders. The inputs of the entropy coders in each group are connected to the output of one of the plurality of coders. The transmitting part further provides an evaluation part for evaluating the characteristics of the outputs of the coders and the entropy coders. The evaluation part extracts those entropy coders having output bit rates lower than the transmission bit rate and extracts, from the coders connected to the extracted entropy coders, a coder having the best output characteristic. Then, the evaluation part outputs a selecting signal indicating the combination of the selected coder and an entropy coder from the extracted entropy coders. The transmitting part further provides a selecting part for selecting, in response to the selecting signal, the codeword passed through the combination of the coder and the entropy coder to be transmitted.

公开(公告)号：US4312075A

公开(公告)日：1982-01-19

申请号：US56641

申请日：1979-07-11

申请人： Kazuo Murano ,  Shigeyuki Unagami ,  Yoshikazu Itoh ,  Fumio Amano ,  Tatsuki Hayashi

发明人： Kazuo Murano ,  Shigeyuki Unagami ,  Yoshikazu Itoh ,  Fumio Amano ,  Tatsuki Hayashi

IPC分类号： H04L7/033 ,  H04L7/02

CPC分类号： H04L7/0334 ,  H04L7/0331

摘要： A timing-phase recovery circuit, which is suitably mounted on a digital LSI, includes a timing phase recovery circuit. The timing-phase recovery circuit includes a first circuit for extracting a digital timing signal from a received input analogue signal, a second circuit for detecting a virtual zero crossing included in the digital timing signal in synchronism with a sampling signal and a third circuit for carrying out a phase shift with respect to the sampling signal in order to tune the timing signal to the frequency of the virtual zero crossings in a very short period of time.

摘要翻译： 适当地安装在数字LSI上的定时相位恢复电路包括定时相位恢复电路。 定时相位恢复电路包括用于从接收到的输入模拟信号中提取数字定时信号的第一电路，用于与采样信号同步地检测包括在数字定时信号中的虚拟过零点的第二电路和用于承载的第三电路 相对于采样信号产生相移，以便在非常短的时间段内将定时信号调谐到虚拟过零点的频率。

公开(公告)号：US5003604A

公开(公告)日：1991-03-26

申请号：US321153

申请日：1989-03-09

申请人： Koji Okazaki ,  Yasuji Ohta ,  Fumio Amano ,  Shigeyuki Unnagami

发明人： Koji Okazaki ,  Yasuji Ohta ,  Fumio Amano ,  Shigeyuki Unnagami

IPC分类号： G10L19/00 ,  G10L25/90

CPC分类号： G10L19/00 ,  G10L25/90

摘要： A voice coding apparatus includes a pitch detecting circuit which detects a pitch period of a voice signal; a pitch waveform generating circuit which samples the voice signal for a plurality of pitches based on the pitch period detected by the pitch detecting circuit and which generates a waveform of one pitch from the waveform of the plurality of pitches; a band restriction circuit which restricts the frequency band of the one pitch waveform generated in the pitch waveform generating circuit; and a coding circuit for coding the voice waveform which is band restricted in the band restriction circuit. The sampling number of the waveform for a plurality of pitches and the restricted bandwidth can be changed in accordance with the amount of the pitch period extracted in the pitch detecting circuit. Further, the pitch detecting circuit is able to correctly detect the pitch period even when the pitch period is not a multiple of the sampling period.

公开(公告)号：US5136577A

公开(公告)日：1992-08-04

申请号：US658180

申请日：1991-02-20

申请人： Fumio Amano ,  Hector M. P. Meana

发明人： Fumio Amano ,  Hector M. P. Meana

IPC分类号： H04B3/21 ,  H04M9/08

CPC分类号： H04M9/082 ,  H04B3/21

摘要： A sub-band acoustic echo canceller includes a first division and decimation process part for dividing a reception signal from a line into first band signals of N channels and for decimating each of the first band signals to output decimated first band signals in a form of complex signals, where N is an integer greater than or equal to two, a second division and decimation process part for dividing a transmission signal into second band signals of N channels and for decimating each of the second band signals to output decimated second band signals in a form of complex signals, an echo canceller group made up of a group of echo cancellers for generating a pseudo echo in each band based on a corresponding one of the decimated first band signals received from the first division and decimation process part by referring to a corresponding one of the decimated second band signals received from the second division and decimation process part and for outputting a residual signal in each band by subtracting the pseudo echo of one band from the decimated second band signal of the same band, and an interpolation and synthesis process part for subjecting the residual signals received from the echo canceller group to interpolation and synthesis to output a synthesized residual signal which is transmitted to a line as the transmission signal, where the echo canceller group carries out an echo cancelling operation for each band in a complex signal region.

公开(公告)号：US08033569B2

公开(公告)日：2011-10-11

申请号：US12480178

申请日：2009-06-08

申请人： Mitsutoshi Yamanishi ,  Fumio Amano

发明人： Mitsutoshi Yamanishi ,  Fumio Amano

IPC分类号： B60R21/213 ,  B60R21/232 ,  B60R21/2338

CPC分类号： B60R21/2338 ,  B60R21/213 ,  B60R21/232 ,  B60R21/237 ,  B60R22/195 ,  B60R2021/23386

摘要： A curtain member has a bending portion which is formed by a rear portion of the curtain member in a folded stored state being bent forward, i.e., toward an opposite side to the vertically-extending vehicle-body pillar. A second tether member is made of a long cloth member. Its rear end is fixed to a specified lower-side position of a fifth pillar which is located below the middle portion of this pillar in the vertical direction via a fixing pin. Its front end is fixed to a body portion of a curtain member via a seam portion. Accordingly, there can be provided the interior structure of a vehicle equipped with a curtain airbag which can properly form the tension line at the curtain member.

摘要翻译： 帘式构件具有弯曲部，该弯曲部由折叠存储状态的帘幕构件的后部形成，向前弯曲，即朝向垂直延伸的车身柱的相对侧。 第二系绳构件由长布构件制成。 其后端通过固定销固定在位于该柱的中间部分下方的第五柱的指定的下侧位置。 其前端经由接缝部固定于帘部件的主体部。 因此，可以提供一种车辆的内部结构，该车辆配备有能够在帘部件上适当地形成张力线的帘式气囊。

公开(公告)号：US06871175B2

公开(公告)日：2005-03-22

申请号：US09816032

申请日：2001-03-22

申请人： Fumio Amano

发明人： Fumio Amano

IPC分类号： G10L19/00 ,  G10L19/04 ,  G10L19/12 ,  H03M7/30

CPC分类号： G10L19/00

摘要： A voice encoding method includes the steps of encoding a first frame that contains a plurality of voice data into encoded parameters, locally decoding the encoded parameters of the first frame into a second frame, performing a plurality of interpolation recovery processes that generate respective frames approximating to the first frame by using a frame or frames other than the first frame, comparing the second frame with the frames approximating to the first frame generated by the plurality of interpolation recovery processes, calculating a signal to noise ratio of each of the frames approximating to the first frame by treating the second frame as the signal, determining an index number that indicates an interpolation recovery process which provides a highest signal to noise ratio, and multiplexing and transmitting the index number with the encoded parameters.

摘要翻译： 语音编码方法包括以下步骤：将包含多个语音数据的第一帧编码为编码参数，将第一帧的编码参数本地解码为第二帧，执行多个内插恢复处理，该多个内插恢复处理生成近似于 通过使用除了第一帧之外的帧或帧来比较第一帧，将第二帧与由多个内插恢复处理生成的与第一帧近似的帧进行比较，计算接近于第一帧的每个帧的信噪比 通过处理第二帧作为信号，确定指示提供最高信噪比的内插恢复处理的索引号，以及使用编码参数来复用和发送索引号的第一帧。

公开(公告)号：US4959863A

公开(公告)日：1990-09-25

申请号：US203300

申请日：1988-06-02

申请人： Mitsuhiro Azuma ,  Fumio Amano ,  Ryota Akiyama ,  Naoya Torii

发明人： Mitsuhiro Azuma ,  Fumio Amano ,  Ryota Akiyama ,  Naoya Torii

IPC分类号： H04K1/04

CPC分类号： H04K1/04

摘要： Disclosed is a secret speech equipment for ensuring the secrecy of an analog voice signal, and used in voice communication systems such as an analog telephone and mobile radio. The equipment comprises a sub-band signal generating unit for treating input digital samples as frequency-multiplexed signals of voice spectra, to split the frequency-multiplexed signals into a plurality of frequency bands, and thus obtain sub-band signals of the frequency bands, a sub-band signal permutating unit for permuting the sequence of the sub-band signals, and a sub-band signal multiplexing unit for multiplexing the permutated sub-band signals.