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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

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。

3. 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。

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

US5097333A Interframe deinterleave switching circuit 失效
标题翻译： INTERFRAME灭火器切换电路
公开(公告)号：US5097333A
公开(公告)日：1992-03-17
申请号：US499350
申请日：1990-08-06
申请人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Toshiro Ohmura
发明人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Toshiro Ohmura
IPC分类号： H03M13/27 , H04N5/04 , H04N7/015 , H04N7/62
CPC分类号： H04N21/4302 , H03M13/2789 , H04N21/8106 , H04N7/0152
摘要： In processing the transfer of digital voice signals, an interframe deinterleave switching circuit automatically switches the interleaving length without requiring any switching signal from the external unit. The circuit detects a voice synchronizing signal, produces a switching signal when the voice synchronizing signal is not detected, and inputs the switching signal to an interframe deinterleaving circuit (I) so that the interleaving length is automatically switched in synchronism therewith.
摘要翻译： PCT No.PCT / JP89 / 01086 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 / 04905 日期为1990年5月3日。在处理数字语音信号的传送中，帧间去交织切换电路自动切换交织长度，而不需要来自外部单元的任何切换信号。该电路检测语音同步信号，当没有检测到语音同步信号时产生切换信号，并将切换信号输入到帧间解交织电路（I），使得交织长度与其自动切换。

6. 发明授权

US4963969A Automatic gain control device 失效
标题翻译：自动增益控制装置
公开(公告)号：US4963969A
公开(公告)日：1990-10-16
申请号：US314087
申请日：1989-02-23
申请人： Hiromu Kitaura , Mitsuo Isobe , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
发明人： Hiromu Kitaura , Mitsuo Isobe , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
IPC分类号： H04N5/04 , H04N5/52 , H04N7/015
CPC分类号： H04N5/52
摘要： Disclosed is an automatic gain control device which comprises: a first amplitude detection circuit for detecting an average amplitude value of a television video signal, a peak amplitude value of the same television video signal, or a value obtained by mixing the average amplitude value and the peak amplitude value with a predetermined mixing ratio; a second amplitude detection circuit for detecting an amplitude value of a vertical or horizontal synchronizing signal in the television video signal; an amplitude control circuit for controlling an amplitude of an input television video signal; a synchronization circuit for detecting a vertical synchronizing signal and a horizontal synchronizing signal in the television video signal so as to generate various pulses including a clock pulse synchronized with the input television video signal by controlling an oscillation frequency of an oscillation circuit; and a synchronization phase lock detection circuit for detecting whether the synchronization circuit has been pulled into synchronism with the input television video signal, so that the amplitude control circuit is controlled by an output of the second amplitude detection circuit when synchronization phase-lock is established while controlled by an output of the first amplitude detection circuit when the synchronization phase-lock comes out.
摘要翻译：公开了一种自动增益控制装置，包括：第一幅度检测电路，用于检测电视视频信号的平均振幅值，相同电视视频信号的峰值振幅值，或通过混合平均振幅值和具有预定混合比的峰值振幅值; 第二振幅检测电路，用于检测电视视频信号中的垂直或水平同步信号的振幅值; 幅度控制电路，用于控制输入电视视频信号的幅度; 用于检测电视视频信号中的垂直同步信号和水平同步信号的同步电路，以通过控制振荡电路的振荡频率产生包括与输入电视视频信号同步的时钟脉冲的各种脉冲; 以及同步锁相检测电路，用于检测同步电路是否已被拉入与输入的电视视频信号同步，使得当建立同步锁相时，幅度控制电路由第二幅度检测电路的输出控制，而当同步锁相出来时由第一幅度检测电路的输出控制。

7. 发明授权

US4912556A Apparatus for compensating contour of television signal 失效
标题翻译：补偿电视信号轮廓的装置
公开(公告)号：US4912556A
公开(公告)日：1990-03-27
申请号：US314182
申请日：1989-02-23
申请人： Yoshio Hirauchi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
发明人： Yoshio Hirauchi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Yoshinori Izumi
IPC分类号： H04N5/208 , H04N7/015
CPC分类号： H04N5/208
摘要： There is provided an apparatus for compensating a contour of a television signal in a TV signal processing apparatus in which a predetermined control signal including a field interpolation control signal to control an interpolating method when reconstructing by an interpolation an image signal which was band compressed by the sub-Nyquist sampling is time sharingly multiplexed for a blanking period, wherein a signal of a still area processed by a still image system processing circuit and a signal of an animation area processed by an animation image system processing circuit are mixed by a mixing circuit every pixel, when the mixed signal is used as an input signal to the subsequent circuits, the OR of the binary signal of the movement amount and the field interpolation control signal transmitted from the transmission side is calculated, the still and animation areas are distinguished by the OR signal, and a contour is emphasized by a two-dimensional contour compensating circuit for the signal in the animation area.
摘要翻译：提供了一种用于补偿TV信号处理装置中的电视信号的轮廓的装置，其中包括场插值控制信号的预定控制信号，用于当通过内插重建由内插方法压缩的图像信号时控制内插方法子奈奎斯特采样在消隐期间进行时分复用，其中由静止图像系统处理电路处理的静止区域的信号和由动画图像系统处理电路处理的动画区域的信号由混合电路每个像素，当混合信号被用作后续电路的输入信号时，计算出从发送侧发送的移动量的二进制信号与场插值控制信号的“或”，静止和动画区域由 OR信号，并且轮廓被二维轮廓补偿电路强调信号在动画区域。

8. 发明授权

US4779131A Apparatus for detecting television image movement 失效
标题翻译：用于检测电视图像移动的装置
公开(公告)号：US4779131A
公开(公告)日：1988-10-18
申请号：US889224
申请日：1986-07-25
申请人： Kunio Matsumoto , Tadao Fujita , Kenji Takanashi , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
发明人： Kunio Matsumoto , Tadao Fujita , Kenji Takanashi , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
IPC分类号： G06T7/20 , H04N5/14 , H04N7/18
CPC分类号： H04N5/144 , G06T7/2053
摘要： In an apparatus for detecting movement of a television image in response to frame difference data corresponding to a difference between present frame data and previous frame data, a video signal is divided into a plurality of segmental areas for each frame, a pixel or picture element is selected to represent each of the segmental areas, frame difference data are produced for each of the segmental areas by calculating differences in the position or coordinates of a pixel representative of a segmental area of a previous frame from the respective picture element of the corresponding segmental area in the present frame, and each of the calculated differences smaller than a predetermined magnitude, and which would be characteristic of a stationary background portion of the television image, is omitted from the frame difference data. This is effective to improve the movement vector detection accuracy. The apparatus has a circuit for zeroing the frame difference data, and thereby improving, the movement vector detection reliability when the number of the calculated differences omitted from the frame difference data exceeds a predetermined value.
摘要翻译：在用于根据与当前帧数据和先前帧数据之间的差对应的帧差数据来检测电视图像的移动的装置中，视频信号被划分成每个帧的多个分段区域，像素或像素是被选择为表示每个分段区域，通过计算代表先前帧的分段区域的像素的位置或坐标的差异，从而对于每个分段区域产生帧差数据，该像素与相应分段区域的相应像素在帧差中，从帧差数据中省略计算出的差异小于规定大小，并且将是电视图像的静止背景部分的特征的各个。这对于提高运动矢量检测精度是有效的。该装置具有用于使帧差分数据归零的电路，从而提高当从帧差数据中省略的计算出的差异的数量超过预定值时的运动矢量检测可靠性。

9. 发明授权

US4663665A TV system conversion apparatus 失效
标题翻译：电视系统转换装置
公开(公告)号：US4663665A
公开(公告)日：1987-05-05
申请号：US814493
申请日：1985-12-30
申请人： Yutaka Tanaka , Taiji Nishizawa , Yuichi Ninomiya , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka
发明人： Yutaka Tanaka , Taiji Nishizawa , Yuichi Ninomiya , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka
IPC分类号： H04N7/01
CPC分类号： H04N7/014
摘要： The picture quality deterioration such as judder caused by TV frame number conversion can be mitigated by selecting either the stationary original picture signal or the motion-compensated interpolated picture signal based on the most adaptive motion vector corresponding to the smallest interframe difference between the original picture signal and the motion-compensated picture signals based on the motion vectors individually detected from divisional picture areas. The effect of this mitigation can be increased by weighting the detected motion vectors and by smoothing the contour between motion-compensated picture areas with the aid of filtering.
摘要翻译：可以通过基于与原始图像信号之间的最小帧间差最大的自适应运动矢量选择固定原始图像信号或运动补偿内插图像信号来减轻由TV帧数转换引起的抖动的图像质量恶化以及基于从分割图像区域单独检测的运动矢量的运动补偿图像信号。通过对检测到的运动矢量进行加权并借助于滤波来平滑运动补偿图像区域之间的轮廓，可以提高这种缓解的效果。

10. 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。

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