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1. 发明授权

US5363384A Audio signal demodulation circuit 失效
标题翻译：音频信号解调电路
公开(公告)号：US5363384A
公开(公告)日：1994-11-08
申请号：US164996
申请日：1993-12-10
申请人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
IPC分类号： H04B14/04 , H04N7/088 , H04N5/76 , G06F11/00
CPC分类号： H04B14/046 , H04N7/088
摘要： A digital audio signal demodulation circuit comprises a synchronous detection circuit (18) and a muting circuit (17) for muting the output from an interpolation circuit (16) using a synchronization lock signal generated from the synchronous detection circuit (18) when synchronization has been lost. The differential signal output from the interpolation circuit (16) is muted by the muting circuit (17) and thereafter integrated by an integration circuit (19). Thus, an audio signal with high sound quality can be demodulated without producing interruption noise even when synchronization has been lost or forcible muting is done.
摘要翻译：数字音频信号解调电路包括同步检测电路（18）和静噪电路（17），用于在同步已经被同步时使用从同步检测电路（18）产生的同步锁定信号来使内插电路（16）的输出静音丢失。由内插电路（16）输出的差分信号由静噪电路（17）静音，然后由积分电路（19）进行积分。因此，即使在同步失去或强制静音完成的情况下，也能够解调高音质的音频信号而不产生中断噪声。

2. 发明授权

US5121212A Audio signal demodulating circuit with reduced power consumption 失效
标题翻译：具有降低功耗的音频信号解调电路
公开(公告)号：US5121212A
公开(公告)日：1992-06-09
申请号：US499353
申请日：1990-08-06
申请人： Naoji Okumura , Hisashi Arita , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Naoji Okumura , Hisashi Arita , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
IPC分类号： H04B1/16 , H04N5/60 , H04N7/015 , H04N7/088
CPC分类号： H04N5/602 , H04N7/015 , H04N7/088
摘要： In an audio signal demodulating circuit, an externally supplied reference clock signal is frequency-divided so that the frequency-divided clock signals are supplied to circuit units constituting the audio signal demodulating circuit as clock signals having lower frequencies. A logic circuit is provided to respond to a timing pulse generated synchronously with a video signal so as to set input data or clock signals supplied to the aforementioned circuit units to a low level or a high level during a time period other than the time period of an audio signal, whereby electric power consumption in the audio signal demodulating circuit is markedly reduced.
摘要翻译： PCT No.PCT / JP89 / 01087 Sec。 371日期1990年8月6日 102（e）日期1990年8月6日PCT提交1989年10月24日PCT公布。出版物WO90 / 04901 日期为1990年5月3日。在音频信号解调电路中，外部提供的参考时钟信号被分频，使得分频时钟信号被提供给构成音频信号解调电路的电路单元作为具有较低频率的时钟信号。提供逻辑电路以对与视频信号同步产生的定时脉冲进行响应，以将提供给前述电路单元的输入数据或时钟信号设置为低电平或高电平，而不是在时间段音频信号，由此音频信号解调电路中的功耗明显降低。

3. 发明授权

US5163053A Audio signal demodulation circuit 失效
标题翻译：音频信号解调电路
公开(公告)号：US5163053A
公开(公告)日：1992-11-10
申请号：US499349
申请日：1990-08-06
申请人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
IPC分类号： H04N5/60 , H04B1/10 , H04B14/04 , H04N7/088
CPC分类号： H04N7/088 , H04B14/046
摘要： An audio signal demodulating circuit comprises a counter circuit (11) for detecting the number of samples for which interpolation is to be successively made by counting the output from an error correction circuit (2) and an AND circuit 10 for taking the logical product of the output from the counter circuit and the mute signal generated when synchronization has been lost. If interpolation is to be successively made for m (integer) or more, an audio differential signal is muted using a mute signal so as to remove the signal with greatly deteriorated audio quality. This can remove large audio distortion generated if interpolation is only successively made for error correction when errors successively occur for samples.
摘要翻译： PCT No.PCT / JP89 / 01088 Sec。 371日期1990年8月6日 102（e）日期1990年8月6日PCT提交1989年10月14日PCT公布。出版物WO90 / 04890 日期：1990年5月3日。音频信号解调电路包括计数器电路（11），用于通过对来自纠错电路（2）的输出和AND电路10进行计数来检测要连续进行内插的采样数，取计数器电路输出的逻辑积和同步丢失时产生的静音信号。如果要连续进行m（整数）以上的插补，则使用静音信号使音频差分信号静音，以便消除音频质量大大恶化的信号。这可以消除当针对样本连续发生错误时仅针对纠错连续进行插值时产生的大音频失真。

4. 发明授权

US4998106A Reference voltage regulation apparatus for an automatic gain control system 失效
标题翻译：用于自动增益控制系统的参考电压调节装置
公开(公告)号：US4998106A
公开(公告)日：1991-03-05
申请号：US318538
申请日：1989-03-03
申请人： Toyokastu Koga , Isao Kawahara , Yoshimichi Ohtsuka , Tadashi Kawashima , Yuichi Ninomiya
发明人： Toyokastu Koga , Isao Kawahara , Yoshimichi Ohtsuka , Tadashi Kawashima , Yuichi Ninomiya
IPC分类号： H04N5/52 , H03M1/00 , H04N5/53 , H04N7/24
CPC分类号： H04N5/53 , H03M1/1295 , H03M1/182 , H04N7/24
摘要： An automatic gain control system for controlling a gain of an A/D converter automatically by controlling reference voltages of said A/D converter at the time of analog-to-digital conversion of a signal which signal being clamped by a clamp circuit to a clamp level which is set to a center level before entering said A/D converter, comprising a clamp level control circuit for detecting the clamp level from an output of said A/D converter to control the clamp level; a first A/D converter for digital-to-analog converting an output of said clamp level control circuit; an automatic clamp level control system.

5. 发明授权

US4307420A Motion-compensated interframe coding system 失效
标题翻译：运动补偿帧间编码系统
公开(公告)号：US4307420A
公开(公告)日：1981-12-22
申请号：US155786
申请日：1980-06-02
申请人： Yuichi Ninomiya , Yoshimichi Ohtsuka
发明人： Yuichi Ninomiya , Yoshimichi Ohtsuka
IPC分类号： G06T7/20 , G06T9/00 , H04N7/26 , H04N7/32 , H04N7/36 , H04M7/12
CPC分类号： G06T7/2013 , H04N19/124 , H04N19/50 , H04N19/51 , G06T2207/10016
摘要： An interframe coding system provided for highly efficient transmission of coded television picture signal is improved by compensating prediction error of predicted picture motion in response to interframe correlation detected by shifting moving blocks in a direction opposite to a motion vector detected for predicting interframe picture motion in order to reduce an amount of coded signals to be transmitted, and further improved regarding the detection of motion vector by examining interframe correlation referred to accumulated logarithms of absolute values of interframe differential picture element signals, and still further improved regarding the compensation of predicted picture motion by changing a coding threshold level in response to picture motion and further by effecting more exact secondary prediction of picture motion. According to these improvements, an extremely high efficiency of transmission of precisely and correctly coded interframe picture signal can be attained.
摘要翻译：提供用于编码电视图像信号的高效传输的帧间编码系统通过补偿预测的图像运动的预测误差来补偿预测图像运动的预测误差，该帧间相关检测是通过沿与检测到的运动矢量相反的方向移动运动块来检测的，以预测帧间图像运动为了减少要发送的编码信号的数量，并且通过检查涉及帧间差分图像信号的绝对值的累积对数的帧间相关性来检测运动矢量，并进一步改进，并且关于预测图像运动的补偿进一步改进响应于图像运动改变编码阈值水平，并进一步通过对图像运动进行更准确的二次预测。根据这些改进，可以获得精确和正确编码的帧间图像信号的极高的传输效率。

6. 发明授权

US4943858A TV signal recording and reproducing apparatus employing a digital interface and including signal drop-out compensation 失效
标题翻译： TV信号记录和再现装置采用数字接口并包括信号丢失补偿
公开(公告)号：US4943858A
公开(公告)日：1990-07-24
申请号：US314089
申请日：1989-02-23
申请人： Hiromu Kitaura , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
发明人： Hiromu Kitaura , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
IPC分类号： H04N7/015 , H04N9/88
CPC分类号： H04N9/88 , H04N7/0152
摘要： A recording and reproducing apparatus is disclosed in whic
摘要翻译：公开了一种记录和再现装置

7. 发明授权

US4884136A Motion detection circuit 失效
标题翻译：运动检测电路
公开(公告)号：US4884136A
公开(公告)日：1989-11-28
申请号：US250160
申请日：1988-09-28
申请人： Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi , Seiichi Gohshi , Yoshiaki Shishikui
发明人： Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi , Seiichi Gohshi , Yoshiaki Shishikui
IPC分类号： H04N19/50 , H04N5/14 , H04N7/015 , H04N11/04 , H04N19/00 , H04N19/423 , H04N19/59 , H04N19/80 , H04N19/85
CPC分类号： H04N7/0152 , H04N19/503 , H04N5/144
摘要： The motion detection circuit is so constructed that an interframe difference signal is passed through a horizontal direction LPF and a vertical direction LPF in cascade connection, and the interframe difference signal thus obtained is divided by the value obtained by mixing an edge signal of an image and the image level signal of the image by a mixing circuit, thus providing a motion signal.
摘要翻译：运动检测电路被构造成使得帧间差分信号在级联连接中通过水平方向LPF和垂直方向LPF，并且将由此获得的帧间差分信号除以通过混合图像的边缘信号和通过混合电路的图像的图像级信号，从而提供运动信号。

8. 发明授权

US4891699A Receiving system for band-compression image signal 失效
标题翻译：带式压缩图像信号接收系统
公开(公告)号：US4891699A
公开(公告)日：1990-01-02
申请号：US314088
申请日：1989-02-23
申请人： Masanori Hamada , Takeshi Inoue , Mitsuo Isobe , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
发明人： Masanori Hamada , Takeshi Inoue , Mitsuo Isobe , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
IPC分类号： H04N7/015 , H04N7/12
CPC分类号： H04N7/125 , H04N7/015
摘要： When the receiving system for a band-compression image signal receives a dropout signal representing a dropout portion of an image signal, an output of the third delay circuit of the temporal filter for motion detection processing, that is, motion information of an image signal, which precedes by one field, and a dropout signal activate the signal selection control circuit to produce an output signal for controlling the operation of the signal selection circuit, so that an output signal of the first delay circuit is selected for a static portion of an image, and an output signal of the dropout compensation circuit is selected for a moving portion of an image, so as to effect compensation control of the dropout portion of an image signal, thereby preventing deterioration of the quality of an image.
摘要翻译：当带式压缩图像信号的接收系统接收到表示图像信号的压差部分的压差信号时，用于运动检测处理的时间滤波器的第三延迟电路的输出，即图像信号的运动信息，其前置一个场，并且一个丢失信号激活信号选择控制电路以产生用于控制信号选择电路的操作的输出信号，使得第一延迟电路的输出信号被选择用于图像的静态部分，并且为图像的运动部分选择压差补偿电路的输出信号，以便实现图像信号的压差部分的补偿控制，从而防止图像质量的劣化。

9. 发明授权

US4757272A Four phase PSK demodulator 失效
标题翻译：四相PSK解调器
公开(公告)号：US4757272A
公开(公告)日：1988-07-12
申请号：US880836
申请日：1986-07-01
申请人： Yukihiro Okada , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi , Sei'ichi Goushi
发明人： Yukihiro Okada , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi , Sei'ichi Goushi
IPC分类号： H04L27/227 , H03D3/18 , H03D3/24 , H03K9/04 , H04L7/04
CPC分类号： H04L27/2277
摘要： A demodulator for regenerating and demodulating a carrier signal from a four-phase PSK received signal having a data symbol preamble and a fixed phase (one of four phases) of a particular time width using a synchronous detection type demodulating system (remodulation type demodulating system). The demodulator includes an orthogonal demodulating circuit and a remodulating circuit for regenerating a carrier signal which is the data signal during a preamble transmission period from a received modulated signal. The remodulating circuit includes a demodulator having an AFC circuit for detecting a frequency change using a narrow band filter, means for suppressing frequency changes of the four-phase PSK modulated signal received and means for rendering constant the frequency of the regenerated carrier signal passing through the narrow band filter.
摘要翻译：一种用于使用同步检测型解调系统（再调制型解调系统）从具有数据符号前导码和特定时间宽度的固定相位（四相一个）的四相PSK接收信号再生和解调载波信号的解调器，。解调器包括正交解调电路和再生电路，用于在从接收的调制信号的前导码传输周期期间再生作为数据信号的载波信号。再调制电路包括具有用于使用窄带滤波器检测频率变化的AFC电路的解调器，用于抑制接收的四相PSK调制信号的频率变化的装置，以及用于使再生的载波信号的频率恒定的装置，窄带滤波器。

10. 发明授权

US4745459A Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal 失效
标题翻译：用于高分辨率彩色电视图像信号的分时间压缩子采样传输和运动补偿再现系统
公开(公告)号：US4745459A
公开(公告)日：1988-05-17
申请号：US33878
申请日：1987-04-02
申请人： Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
发明人： Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
IPC分类号： H04N7/12 , H04N11/24 , H04N11/02
CPC分类号： H04N11/006 , H04N7/12
摘要： A high definition color television picture signal is unified by time-axis compressed integration (TCI) and the bandwidth thereof is extremely narrowed by dot-interlace subsampling. As a result, a narrow band transmission picture signal accompanied with a control signal adapted to the restoration of the received original picture signal, which is suitable for satellite broadcast, can be obtained through a comparatively simple arrangement. The received narrow band transmission picture signal can be restored by the interpolation adapted respectively to the stationary picture and the motion picture under control of the control signal or the picture-motional information detected from the received picture signal in combination with the control signal, so that the original high definition can be sufficiently maintained through comparatively simple receiving equipment.
摘要翻译：高分辨率彩色电视图像信号通过时间轴压缩积分（TCI）统一，其带宽由点间隔二次采样极大地缩小。结果，可以通过相对简单的布置来获得伴随适用于恢复接收到的原始图像信号的适合于卫星广播的控制信号的窄带传输图像信号。控制信号或从接收到的图像信号检测到的图像运动信息与控制信号相结合，分别适应于静止图像和运动图像的接收窄带传输图像信号可以恢复，从而通过比较简单的接收设备可以充分保持原有的高分辨率。

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