Apparatus and method for processing signals of an imaging device
    12.
    发明授权
    Apparatus and method for processing signals of an imaging device 失效
    用于处理成像装置的信号的装置和方法

    公开(公告)号:US5404165A

    公开(公告)日:1995-04-04

    申请号:US58672

    申请日:1993-05-10

    IPC分类号: H04N9/69 H04N9/73 H04N5/202

    CPC分类号: H04N9/69 H04N9/735

    摘要: An apparatus and method for processing signals of an imaging device comprising a detection circuit for detecting the color temperature of a light source for illuminating an object of which the image is picked up and a circuit for varying .gamma. correction characteristics for chrominance signals, whereby the .gamma. correction characteristics are changed to reduce the gains for low level regions of input signals to .gamma. correction circuits in accordance with the color temperature, thereby enabling the final quantize noise to be reduced.

    摘要翻译: 一种用于处理成像装置的信号的装置和方法,包括用于检测用于照亮被拍摄图像的物体的光源的色温的检测电路和用于改变色度信号的伽马校正特性的电路, 校正特性被改变以根据色温将输入信号的低电平区域的增益减小到伽马校正电路,从而能够减少最终的量化噪声。

    Digital signal processing apparatus having devices for delaying and
combining color signals
    13.
    发明授权
    Digital signal processing apparatus having devices for delaying and combining color signals 失效
    具有用于延迟和组合颜色信号的装置的数字信号处理装置

    公开(公告)号:US5170249A

    公开(公告)日:1992-12-08

    申请号:US510867

    申请日:1990-04-18

    CPC分类号: H04N5/142 H04N9/045

    摘要: In a digital signal processor for an imaging system, a first pixel signal including first and second color information items and a second pixel signal including third and fourth color information items are alternately outputted to generate an image signal, which is subdivided into a portion to be delayed by a horizontal scanning period and a portion not to be delayed such that these signals are thereafter combined to form an image signal having respective pixel signals so as to achieve a matrix processing on the resultant signal to attain red, blue, and green signals.

    摘要翻译: 在用于成像系统的数字信号处理器中,交替地输出包括第一和第二颜色信息项的第一像素信号和包括第三和第四颜色信息项的第二像素信号,以产生图像信号,其被细分成一部分 延迟水平扫描周期和不被延迟的部分,使得这些信号此后被组合以形成具有各个像素信号的图像信号,以便对所得到的信号进行矩阵处理,以获得红色,蓝色和绿色信号。

    Resolution conversion unit and apparatus having resolution conversion unit
    14.
    发明授权
    Resolution conversion unit and apparatus having resolution conversion unit 有权
    分辨率转换单元和具有分辨率转换单元的设备

    公开(公告)号:US06509931B1

    公开(公告)日:2003-01-21

    申请号:US09522366

    申请日:2000-03-09

    IPC分类号: H04N701

    摘要: The large circuit scale problem is avoided by applying a systematic algorithm for both enlargement and reduction. A resolution conversion unit for converting the resolution of an input video signal with a magnification of M/N is provided with a storage part for storing the arithmetic result, an arithmetic part having an adding part for adding a positive integer M to an output of the storage part and a subtracting part for subtracting a positive integer N from the output of the storage part, a memory part for temporarily storing a video signal, a memory control part for generating a reading and/or writing control signal based on an output supplied from the arithmetic part, and a pixel value arithmetic part for calculating an output pixel value corresponding to a pixel value included in an input video signal based on an output supplied from the arithmetic part.

    摘要翻译: 通过应用放大和缩小的系统算法避免了大电路规模问题。 用于以M / N的倍率转换输入视频信号的分辨率的分辨率转换单元设置有用于存储算术结果的存储部分,具有用于将正整数M加到 存储部分和用于从存储部分的输出中减去正整数N的减法部分,用于临时存储视频信号的存储部分,用于产生读取和/或写入控制信号的存储器控​​制部分,基于从 算术部分和像素值运算部分,用于基于从运算部分提供的输出来计算与输入视频信号中包括的像素值相对应的输出像素值。

    Video camera apparatus including programmable timing generation circuit
    15.
    发明授权
    Video camera apparatus including programmable timing generation circuit 失效
    包括可编程时序产生电路的摄像机装置

    公开(公告)号:US5483290A

    公开(公告)日:1996-01-09

    申请号:US132309

    申请日:1993-10-06

    摘要: A video camera in which an output signal from a solid-state image sensor is converted into the corresponding digital signal at the horizontal reading cycle of the output signal, and the digital signal is digital-processed with a first predetermined clock (fs) synchronous with the reading cycle to provide a luminance signal and a color difference signal. This video camera comprises data clock converter for latching the color signals; control circuit for detecting the phase of the changing point of the color signal generated; phase correction circuit for receiving the color signal after data clock conversion from said data clock converter, and producing a phase-corrected color difference signal by selecting, in accordance with said phase detecting signal from the control circuit, either one of the color difference signal having an intermediate phase obtained by interpolating the signals before and after the changing point of the received color signal and said color difference signal after data clock conversion; and modulation circuit for quadrature-balanced-modulating the color difference signal supplied from said phase correction circuit to provide a modulated color signal.

    摘要翻译: 一种摄像机,其中来自固态图像传感器的输出信号在输出信号的水平读取周期被转换成相应的数字信号,数字信号以与第一预定时钟(fs)同步的数字处理 提供亮度信号和色差信号的读取周期。 该摄像机包括用于锁存彩色信号的数据时钟转换器; 控制电路,用于检测所生成的彩色信号的变化点的相位; 相位校正电路,用于在从所述数据时钟转换器进行数据时钟转换之后接收彩色信号,并且通过根据来自控制电路的所述相位检测信号选择色差信号中的任一个,产生相位校正的色差信号,所述色差信号具有 通过在数据时钟转换之后内插所接收的彩色信号的变化点之前和之后的信号和所述色差信号而获得的中间相位; 以及用于对从所述相位校正电路提供的色差信号进行正交平衡调制以提供调制色信号的调制电路。

    Picture synthesizing apparatus with gain control system
    16.
    发明授权
    Picture synthesizing apparatus with gain control system 失效
    具有增益控制系统的图像合成装置

    公开(公告)号:US4855812A

    公开(公告)日:1989-08-08

    申请号:US133360

    申请日:1987-12-15

    IPC分类号: H04N5/45

    CPC分类号: H04N5/45

    摘要: A picture synthesizing apparatus in which a main picture is displayed with a part inlaid with a subsidiary picture. The apparatus includes an AGC circuit for regulating the gain of the main video signal and an AGC circuit for regulating the gain of a subsidiary video signal. Alternatively, the chrominance signal level of the subsidiary video signal can be regulated in accordance with the chrominance signal level of the main video signal.

    摘要翻译: 一种图像合成装置,其中显示具有附属图像的部分的主图像。 该装置包括用于调节主视频信号的增益的AGC电路和用于调节辅助视频信号的增益的AGC电路。 或者,可以根据主视频信号的色度信号电平来调整辅助视频信号的色度信号电平。

    Image processing system
    17.
    发明授权
    Image processing system 失效
    图像处理系统

    公开(公告)号:US4984083A

    公开(公告)日:1991-01-08

    申请号:US373630

    申请日:1989-06-28

    IPC分类号: H04N5/45

    CPC分类号: H04N5/45

    摘要: An image processing system comprising a first and second video signal sources providing a main-field video signal and sub-field video signal, respectively, means for compressing the sub-field video signal on the time axis, and a signal merging unit which merges the compressed sub-field video signal into the main-field video signal and delivers the resulting signal to a television receiver set, wherein the signal compressing means comprising a dual-port memory having a first and second ports and operating to compress the sub-field video signal on the time axis and store the compressed signal, and control means for controlling the reading and writing of the memory for the sub-field video signal, the control means comprising a first control section for writing the sub-field video signal into the first port of said memory, a second control section for transferring a signal from the first port to the second port, and a third control section for reading out a signal from the second port, said memory implementing the reading operation and writing operation in asynchronous manner.

    摘要翻译: 一种图像处理系统,包括分别提供主视频信号和副场视频信号的第一和第二视频信号源,用于在时间轴上压缩子场视频信号的装置,以及合并该视场信号的信号合并单元 将压缩的子场视频信号转换成主视频信号并将所得到的信号传送到电视接收机组,其中信号压缩装置包括具有第一和第二端口的双端口存储器,并且操作以压缩子场视频 信号在时间轴上并存储压缩信号,以及控制装置,用于控制子场视频信号的存储器的读和写,该控制装置包括第一控制部分,用于将子视频信号写入第一 所述存储器的端口,用于将信号从第一端口传送到第二端口的第二控制部分,以及用于从第二端口读出信号的第三控制部分, d存储器以异步方式实现读操作和写操作。

    Video camera with a function to correct defective pixels of solid state
image pickup device and method of correcting defective pixels of solid
state image pickup device
    18.
    发明授权
    Video camera with a function to correct defective pixels of solid state image pickup device and method of correcting defective pixels of solid state image pickup device 失效
    具有校正固态图像拾取装置的有缺陷像素的功能的摄像机以及校正固态图像拾取装置的有缺陷像素的方法

    公开(公告)号:US5796430A

    公开(公告)日:1998-08-18

    申请号:US786733

    申请日:1997-01-27

    摘要: When defective pixels of a solid state image pickup device of a video camera are corrected by signal processes, a white spot noise is detected by closing an iris and by comparing the signal level and a level of only a dark current. Further, in this case, a gain of an AGC circuit for controlling a gain of a video signal is raised and a precise detection is executed. By executing such a detecting operation at the time of turn-on or turn-off of a power source, the user is not annoying. In the ordinary photographing, a reference level in detection of a white spot noise is set to an optimum value in accordance with a temperature of the solid state image pickup device or its peripheral temperature or the gain of the AGC circuit so that the white spot noise detection is not influenced by the temperature of the solid state image pickup device or the operating state of the AGC circuit.

    摘要翻译: 当通过信号处理校正摄像机的固态图像拾取装置的缺陷像素时,通过闭合光圈并通过比较信号电平和仅暗电流的电平来检测白点噪声。 此外,在这种情况下,提高用于控制视频信号的增益的AGC电路的增益,并且执行精确的检测。 通过在电源的接通或断开时执行这种检测操作,用户不烦人。 在普通拍摄中,根据固体摄像装置的温度或其周围温度或AGC电路的增益,将白点噪声检测的基准电平设定为最佳值,使得白点噪声 检测不受固态图像拾取装置的温度或AGC电路的操作状态的影响。

    Editing circuit for a magnetic recording and reproducing apparatus
    19.
    发明授权
    Editing circuit for a magnetic recording and reproducing apparatus 失效
    磁记录和再现装置的编辑电路

    公开(公告)号:US5060087A

    公开(公告)日:1991-10-22

    申请号:US305005

    申请日:1989-01-31

    摘要: In order to attain such editing that the fade in/fade out effect is obtained at a joint between scenes, an editing circuit for magnetic recording and reproducing apparatus includes memory for storing therein the last field (or one frame) of a video signal of a first scene recorded on magnetic tape, and operation processing circuit for adding an output signal obtained by repetitively reading out signals from the memory to a video signal of a second scene supplied from outside with proportions sucessively changed. The output signal of the operation processing circuit is supplied to the magnetic tape as a recording signal.

    摘要翻译: 为了获得在场景之间的联合获得淡入/淡出效果的编辑,用于磁记录和再现装置的编辑电路包括用于在其中存储一个视频信号的最后一个字段(或一个帧)的存储器 第一场景记录在磁带上,以及操作处理电路,用于将从存储器重复读出的信号获得的输出信号与从外部提供的第二场景的视频信号相加而变化。 操作处理电路的输出信号作为记录信号提供给磁带。

    Video camera with a function to correct defective pixels of solid state
image pickup device and method of correcting defective pixels of solid
state image
    20.
    发明授权
    Video camera with a function to correct defective pixels of solid state image pickup device and method of correcting defective pixels of solid state image 失效
    具有校正固态图像拾取装置的有缺陷像素的功能的摄像机以及校正固态图像的有缺陷像素的方法

    公开(公告)号:US5625413A

    公开(公告)日:1997-04-29

    申请号:US470010

    申请日:1995-06-06

    摘要: When defective pixels of a solid state image pickup device of a video camera are corrected by signal processes, a white spot noise is detected by closing an iris and by comparing the signal level and a level of only a dark current. Further, in this case, a gain of an AGC circuit for controlling a gain of a video signal is raised and a precise detection is executed. By executing such a detecting operation at the time of turn-on or turn-off of a power source, the user is not annoying. In the ordinary photographing, a reference level in detection of a white spot noise is set to an optimum value in accordance with a temperature of the solid state image pickup device or its peripheral temperature or the gain of the AGC circuit so that the white spot noise detection is not influenced by the temperature of the solid state image pickup device or the operating state of the AGC circuit.

    摘要翻译: 当通过信号处理校正摄像机的固态图像拾取装置的缺陷像素时,通过闭合光圈并通过比较信号电平和仅暗电流的电平来检测白点噪声。 此外,在这种情况下,提高用于控制视频信号的增益的AGC电路的增益,并且执行精确的检测。 通过在电源的接通或断开时执行这种检测操作,用户不烦人。 在普通拍摄中,根据固体摄像装置的温度或其周围温度或AGC电路的增益,将白点噪声检测的基准电平设定为最佳值,使得白点噪声 检测不受固态图像拾取装置的温度或AGC电路的操作状态的影响。