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1. 发明授权

US5331411A Integrated circuit for processing digital signals in video camera having electronic zooming function 失效
标题翻译：用于处理具有电子变焦功能的摄像机中的数字信号的集成电路
公开(公告)号：US5331411A
公开(公告)日：1994-07-19
申请号：US784228
申请日：1991-10-29
申请人： Kiyotada Kawakami , Masao Takuma , Tooru Asaeda , Tooru Yamamoto , Haruhiko Murata , Hirotsugu Murashima , Tohru Watanabe , Masashi Honzawa , Keiichi Tanii
发明人： Kiyotada Kawakami , Masao Takuma , Tooru Asaeda , Tooru Yamamoto , Haruhiko Murata , Hirotsugu Murashima , Tohru Watanabe , Masashi Honzawa , Keiichi Tanii
IPC分类号： H04N5/225 , H04N5/262 , H04N9/07 , H04N9/64 , H04N9/74 , H04N3/223 , H04N5/232 , H04N9/04
CPC分类号： H04N9/74 , H04N5/2628 , H04N2209/046
摘要： An output from a solid state image sensing device spatially modulated by a color filter is A/D converted and stored in a field memory. Digital signals read from the field memory during electronic zooming are successively delayed by 1H period by means of first, second and third 1H delay elements connected in series. The output from the field memory and outputs from the first, second and third 1H delay elements are separated into luminance components and line sequential color components by first to fourth Y/C separating circuits, respectively. A first set of three primary color signals are calculated based on outputs from the first, second and third Y/C separating circuits, and a second set of three primary color signals are calculated based on outputs from the second, third and fourth Y/C separating circuits. Three primary color signals corresponding to a new display point formed along with the execution of the electronic zooming function are formed based on the calculated two sets of three primary color signals, and a luminance signal corresponding to the new display point is formed based on outputs from the second and third Y/C separating circuits.
摘要翻译：由滤色器空间调制的固态图像感测装置的输出被A / D转换并存储在场存储器中。在电子变焦期间从现场存储器读取的数字信号通过串联连接的第一，第二和第三1H延迟元件连续延迟1H周期。来自场存储器的输出和来自第一，第二和第三1H延迟元件的输出分别由第一至第四Y / C分离电路分离成亮度分量和行顺序颜色分量。基于来自第一，第二和第三Y / C分离电路的输出计算第一组三原色信号，并且基于来自第二，第三和第四Y / C分离电路的输出来计算第二组三原色信号分离电路。基于计算出的两组三原色信号形成与执行电子缩放功能一起形成的新显示点的三原色信号，并且基于来自第二和第三Y / C分离电路。

2. 发明授权

US5369436A Automatic focusing apparatus for automatically matching focus in response to video signal based on extracted high frequency component of non-linear processed luminance signal 失效
标题翻译：自动对焦装置，用于基于提取的非线性处理亮度信号的高频分量来自动匹配对视频信号的聚焦
公开(公告)号：US5369436A
公开(公告)日：1994-11-29
申请号：US11527
申请日：1993-01-29
申请人： Kiyotada Kawakami , Masao Takuma , Tooru Asaeda , Tooru Yamamoto , Haruhiko Murata
发明人： Kiyotada Kawakami , Masao Takuma , Tooru Asaeda , Tooru Yamamoto , Haruhiko Murata
IPC分类号： G02B7/28 , H04N5/232 , H04N5/202
CPC分类号： H04N5/23212
摘要： The present invention relates to an automatic focusing apparatus which permits an automatic focusing operation to occur with a high accuracy irrespective of the luminance of an object being sensed. The automatic focusing apparatus includes a focus lens, an image sensor, a focus motor for changing the position of the focus lens, a Y/C separating circuit for separating a luminance signal Y from the output of the image sensor, a non-linear circuit for subjecting the separated luminance signal Y to a non-linear processing, a high pass filter (HPE) extracting a high frequency component from the output of the non-linear circuit, an integrating circuit for integrating the extracted high frequency component and an in-focus detecting circuit for controlling the position of the focus lens based on the result of integration.
摘要翻译：本发明涉及一种自动对焦装置，其允许以高精度发生自动聚焦操作，而不管被感测物体的亮度如何。自动对焦装置包括聚焦透镜，图像传感器，用于改变聚焦透镜的位置的聚焦电机，用于将亮度信号Y与图像传感器的输出分离的Y / C分离电路，非线性电路为了将分离的亮度信号Y进行非线性处理，从非线性电路的输出提取高频分量的高通滤波器（HPE），用于对提取的高频分量进行积分的积分电路，聚焦检测电路，用于根据积分的结果控制聚焦透镜的位置。

3. 发明授权

US5337083A Digital video camera suppressing low-saturation chrominance 失效
标题翻译：数字摄像机抑制低饱和度色度
公开(公告)号：US5337083A
公开(公告)日：1994-08-09
申请号：US45738
申请日：1993-04-14
申请人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Tooru Yamamoto , Tooru Asaeda
发明人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Tooru Yamamoto , Tooru Asaeda
IPC分类号： H04N5/243 , H04N9/04 , H04N9/64 , H04N9/68 , H04N9/70
CPC分类号： H04N9/68 , H04N9/045
摘要： A digital video camera includes a pseudo-saturation calculating circuit by which a pseudo-saturation corresponding to an actual saturation is calculated on the basis of two color difference signals, and a suppression coefficient is calculated by a suppression coefficient calculating circuit on the basis of the pseudo-saturation. Each of the color difference signals are outputted by a selecting circuit in a dot sequential manner, and multiplied by the suppression coefficient in a multiplying circuit. Therefore, a signal in which a low-saturation chrominance signal is outputted from the multiplying circuit, whereby the low-saturation chrominance signal can be suppressed even though a sampling frequency is not increased.
摘要翻译：数字摄像机包括伪饱和度计算电路，通过该伪饱和度计算电路基于两个色差信号计算与实际饱和度相对应的伪饱和度，并且抑制系数由抑制系数计算电路基于伪饱和度。每个色差信号以点顺序方式由选择电路输出，并乘以乘法电路中的抑制系数。因此，从乘法电路输出低饱和度色度信号的信号，即使采样频率没有增加，也可以抑制低饱和度色度信号。

4. 发明授权

US5325182A Video signal processing circuit incorporated in a integrated circuit 失效
标题翻译：视频信号处理电路并入集成电路中
公开(公告)号：US5325182A
公开(公告)日：1994-06-28
申请号：US903075
申请日：1992-06-22
申请人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Tooru Yamamoto , Tooru Asaeda
发明人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Tooru Yamamoto , Tooru Asaeda
IPC分类号： H04N5/228 , H04N9/07 , H04N9/64 , H04N9/77 , H04N5/20 , H04N5/202 , H04N9/78
CPC分类号： H04N9/64
摘要： A video signal processing circuit is incorporated in an IC for camcorder in which a camera signal outputted from a CCD image sensor is processed in a digital manner such that luminance and color signals can be outputted. In the IC, a vertical interpolation circuit produces two kinds of vertically interpolated data on the basis of a digital camera signal of one channel within an image area being set by an electronic zoom function. A YC separation circuit receives the two kinds of vertically interpolated data, and an output of the YC separation circuit is applied a horizontal interpolation circuit or an RGB composition circuit. If the YC separation output is applied to the horizontal interpolation circuit, the same outputs two kinds of horizontally interpolated data upon which three primary color signals are composed by the RGB composition circuit. If the YC separation output is applied to the RGB composition circuit, the horizontal interpolation circuit produces two kinds of horizontally interpolated data on the basis of three primary color data outputted by the RGB composition circuit.
摘要翻译：视频信号处理电路被结合在用于摄像机的IC中，其中以数字方式处理从CCD图像传感器输出的相机信号，从而可以输出亮度和颜色信号。在IC中，垂直内插电路根据由电子变焦功能设定的图像区域内的一个通道的数字照相机信号，生成两种垂直内插数据。 YC分离电路接收两种垂直内插数据，YC分离电路的输出被施加水平内插电路或RGB合成电路。如果将YC分离输出应用于水平内插电路，则相同的输出由RGB合成电路构成三个原色信号的两种水平内插数据。如果YC分离输出被施加到RGB合成电路，则水平内插电路基于由RGB合成电路输出的三原色数据产生两种水平内插数据。

5. 发明授权

US5345264A Video signal processing circuit for a video camera using a luminance signal 失效
标题翻译：用于使用亮度信号的摄像机的视频信号处理电路
公开(公告)号：US5345264A
公开(公告)日：1994-09-06
申请号：US21590
申请日：1993-02-24
申请人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Asaeda , Toshiyuki Okino , Toshiya Iinuma , Akio Kobayashi , Toshinobu Haruki
发明人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Asaeda , Toshiyuki Okino , Toshiya Iinuma , Akio Kobayashi , Toshinobu Haruki
IPC分类号： H04N5/217 , H04N5/228 , H04N5/232 , H04N5/235 , H04N9/73 , H04N9/78 , H04N9/68
CPC分类号： H04N5/357 , H04N5/23212 , H04N5/23248 , H04N5/23254 , H04N5/23267 , H04N5/2352 , H04N5/378
摘要： Auto focus control and/or auto exposure control is carried out by using a luminance signal before gamma correction, before addition of aperture signal but after hand shake correction. Auto white balance control is carried out by using a color signal after hand shake correction. Consequently, precise auto focus control, auto exposure control and/or auto white balance control can be done. The field memory for electronic zooming and/or hand shake correction is also used as a field memory for noise reduction. Consequently, a video signal processing circuit which is inexpensive and simple can be implemented.
摘要翻译：在添加光圈信号之前但是在手抖动校正之后，通过使用伽马校正之前的亮度信号来执行自动聚焦控制和/或自动曝光控制。使用手抖动校正后的彩色信号进行自动白平衡控制。因此，可以进行精确的自动对焦控制，自动曝光控制和/或自动白平衡控制。用于电子变焦和/或手抖动校正的场存储器也用作用于降噪的场存储器。因此，可以实现廉价且简单的视频信号处理电路。

6. 发明授权

US5428391A Video signal processing circuit for a video camera having a recursive-type noise reducer 失效
标题翻译：具有递归型降噪器的摄像机的视频信号处理电路
公开(公告)号：US5428391A
公开(公告)日：1995-06-27
申请号：US255728
申请日：1994-06-07
申请人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Asaeda , Toshiyuki Okino , Toshiya Iinuma , Akio Kobayashi , Toshinobu Haruki
发明人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Asaeda , Toshiyuki Okino , Toshiya Iinuma , Akio Kobayashi , Toshinobu Haruki
IPC分类号： H04N5/217 , H04N5/228 , H04N5/232 , H04N5/235 , H04N9/73 , H04N9/78 , H04N5/262
CPC分类号： H04N5/357 , H04N5/23212 , H04N5/23248 , H04N5/23254 , H04N5/23267 , H04N5/2352 , H04N5/378
摘要： Auto focus control and/or auto exposure control is carried out by using a luminance signal before gamma correction, before addition of aperture signal but after hand shake correction. Auto white balance control is carried out by using a color signal after hand shake correction. Consequently, precise auto focus control, auto exposure control and/or auto white balance control can be done. The field memory for electronic zooming and/or hand shake correction is also used as a field memory for noise reduction. Consequently, a video signal processing circuit which is inexpensive and simple can be implemented.
摘要翻译：在添加光圈信号之前但是在手抖动校正之后，通过使用伽马校正之前的亮度信号来执行自动聚焦控制和/或自动曝光控制。使用手抖动校正后的彩色信号进行自动白平衡控制。因此，可以进行精确的自动对焦控制，自动曝光控制和/或自动白平衡控制。用于电子变焦和/或手抖动校正的场存储器也用作用于降噪的场存储器。因此，可以实现廉价且简单的视频信号处理电路。

7. 发明授权

US5333055A Video camera circuit for processing image signals from an image pickup device having a mosaic color filter 失效
标题翻译：用于处理具有马赛克滤色器的图像拾取装置的图像信号的摄像机电路
公开(公告)号：US5333055A
公开(公告)日：1994-07-26
申请号：US21473
申请日：1993-02-23
申请人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Yamamoto , Toru Asaeda
发明人： Haruhiko Murata , Yukio Mori , Akihiro Maenaka , Masao Takuma , Kiyotada Kawakami , Toru Yamamoto , Toru Asaeda
IPC分类号： H04N9/04 , H04N3/223
CPC分类号： H04N9/045 , H04N2209/046
摘要： A video camera circuit for processing an image signal from an image pickup device having a mosaic color filter comprises a field memroy control circuit for reading out a predetermined line of signal (CCD output data) from a field memory when the position of vertical interpolation has changed, first, second and third line memories for storing the signal from the field memory, a line memory control circuit for controlling signal writing in and reading out from the line memories to concurrently retrieve three lines of signal, a vertical interpolation block for preparing a signal at the position of interpolation based on the four lines of signal, and a Y/C separation block for separating a luminance signal and color difference signals from the signal at the position of interpolation.
摘要翻译：用于处理具有马赛克滤色器的图像拾取装置的图像信号的摄像机电路包括一个场记忆控制电路，用于当垂直内插的位置已经改变时从场存储器中读出预定的信号线（CCD输出数据）用于存储来自场存储器的信号的第一，第二和第三行存储器;行存储器控制电路，用于控制写入行存储器并从线存储器读出并同时检索三行信号的行存储器控制电路;准备信号的垂直内插块在基于四行信号的插值位置处，以及用于将亮度信号和色差信号与插值位置处的信号分离的Y / C分离块。

8. 发明授权

US4922346A Automatic focusing apparatus having a variable focusing speed and particularly suited for use with interlaced scanning 失效
标题翻译：自动对焦装置具有可变的聚焦速度，并且特别适用于隔行扫描
公开(公告)号：US4922346A
公开(公告)日：1990-05-01
申请号：US211434
申请日：1988-06-24
申请人： Masaru Hidaka , Hirotsugu Murashima , Masao Takuma , Toshinobu Haruki , Kenichi Kikuchi
发明人： Masaru Hidaka , Hirotsugu Murashima , Masao Takuma , Toshinobu Haruki , Kenichi Kikuchi
IPC分类号： H04N5/232
CPC分类号： H04N5/23212
摘要： In an automatic focusing apparatus of a video camera, a first focus evaluating value which steeply changes and a second focus evaluating value which gently changes relative to the position of a lens, are detected in response to a video signal obtained in an image sensing circuit (4). A switching circuit (19) alternately selects the first and second focus evaluating values every one field to apply the same to in-focus state detecting circuits (20, 21), respectively. The in-focus state detecting circuits (20, 21), together with a focusing motor control circuit (10), perform an automatic focusing operation by hill-climbing control. In addition, a calculating circuit (22) calculates the relative ratio of the first focus evaluating value to the second focus evaluating value. The focusing motor control circuit (10) sets the rotational speed of a focusing motor (3) to a normal speed when the calculated relative ratio is smaller than a predetermined value while setting the rotational speed of the focusing motor (3) to a low speed when it is larger than the predetermined value. Therefore, a lens (1) is moved at low speed when the focusing lens is in the vicinity of the in-focus position while being moved at high speed when it is in the defocused state.
摘要翻译：在摄像机的自动聚焦装置中，响应于在图像感测电路中获得的视频信号来检测相对于镜头的位置而急剧变化的第一焦点评估值和温和变化的第二焦点评估值 4）。开关电路（19）每隔一场交替地选择第一和第二焦点评估值，以将其分别应用于对焦状态检测电路（20,21）。聚焦状态检测电路（20,21）与聚焦电机控制电路（10）一起通过爬山控制进行自动聚焦操作。此外，计算电路（22）计算第一焦点评价值与第二焦点评价值的相对比。聚焦电动机控制电路（10）在将聚焦电动机（3）的转速设定为低速时，将计算出的相对比例小于规定值，将聚焦电动机（3）的转速设定为正常速度当它大于预定值时。因此，当聚焦透镜在处于散焦状态的同时高速移动时，在聚焦位置附近，透镜（1）以低速移动。

9. 发明授权

US5432552A Automatic focusing apparatus including improved digital high-pass filter 失效
标题翻译：自动对焦装置包括改进的数字高通滤波器
公开(公告)号：US5432552A
公开(公告)日：1995-07-11
申请号：US144718
申请日：1993-10-28
申请人： Masao Takuma , Kiyotada Kawakami
发明人： Masao Takuma , Kiyotada Kawakami
IPC分类号： H04N5/232
CPC分类号： H04N5/23212
摘要： An automatic focusing apparatus includes a focus lens, an image sensing circuit, a circuit for generating a focus evaluating value in response to a video signal from image sensing circuit, a hill-climbing control circuit, a focus motor for moving focus lens in response to a control signal from hill-climbing control circuit, and a circuit for detecting the position of focus motor. The focus evaluating value generating circuit includes an A/D converter, a digital HPF, a digital integrator for integrating the level of the high frequency component in a digital luminance signal in response to a control signal from an integration period setting circuit and sequentially supplies the resultant value as a focus evaluating value to the hill-climbing control circuit for every field, and a timer circuit for producing a reset signal at H level. Thus, after passage of prescribed time period from the end of the horizontal blanking period, a reset signal is applied to digital HPF, delay register in the digital HPF is set to zero, and the digital HPF is reset. Ringing due to a rising in the horizontal blanking period disappears, part of ringing will not be integrated, and therefore accurate automatic focusing operation can be performed.
摘要翻译：自动对焦装置包括聚焦透镜，图像感测电路，用于响应于来自图像感测电路的视频信号产生聚焦评估值的电路，爬山控制电路，用于响应于来自爬山控制电路的控制信号，以及用于检测聚焦电机的位置的电路。焦点评估值产生电路包括A / D转换器，数字HPF，用于响应于来自积分周期设置电路的控制信号而将数字亮度信号中的高频分量的电平进行积分的数字积分器，作为每个场的登山控制电路的焦点评估值的合成值，以及用于产生H电平的复位信号的定时器电路。因此，在水平消隐期结束后经过规定时间后，将复位信号施加到数字HPF，数字HPF中的延迟寄存器设置为零，数字HPF复位。由于水平消隐期间的上升而振铃消失，部分振铃将不会整合，因此可以进行精确的自动对焦操作。

10. 发明授权

US4833541A Image sensing apparatus having function of automatically matching focus and exposure in response to video signal 失效
标题翻译：具有响应于视频信号自动匹配焦点和曝光功能的图像感测装置
公开(公告)号：US4833541A
公开(公告)日：1989-05-23
申请号：US238890
申请日：1988-08-31
申请人： Masao Takuma , Kiyotada Kawakami
发明人： Masao Takuma , Kiyotada Kawakami
IPC分类号： H04N5/232 , H04N5/235
CPC分类号： H04N5/23212 , H04N5/235
摘要： In a video camera, a level of a high frequency component and a luminance level of a video signal in the same area set on a picture are detected to find a focus evaluating value and an exposure evaluating value. Automatic focusing control and automatic iris control are performed in response to these evaluating values. When it is determined that the detected exposure evaluating value fluctuated over a predetermined width or more, an automatic focusing operation is immediately stopped and performed again from the beginning if the automatic focusing operation is being performed, while the automatic focusing operation is prohibited from being started if the automatic focusing operation is being stopped.
摘要翻译：在摄像机中，检测在图像上设定的相同区域中的高频分量和视频信号的亮度电平，以找到焦点评估值和曝光评估值。响应于这些评估值执行自动聚焦控制和自动光圈控制。当确定检测到的曝光评估值在预定宽度或更大的范围内波动时，如果正在执行自动聚焦操作，则在自动聚焦操作被禁止开始的同时立即停止并且从头开始执行自动聚焦操作如果自动对焦操作正在停止。

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