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1. 发明授权

US07760258B2 Apparatus and method for stabilizing image sensor black level 有权
标题翻译：用于稳定图像传感器黑色电平的装置和方法
公开(公告)号：US07760258B2
公开(公告)日：2010-07-20
申请号：US11715808
申请日：2007-03-07
申请人： Ying Huang , Giuseppe Rossi , Roberto Marchesini , Qianjiang (Bob) Mao , John Wallner , John Richardson , Laurent Blanquart , Joey Shah
发明人： Ying Huang , Giuseppe Rossi , Roberto Marchesini , Qianjiang (Bob) Mao , John Wallner , John Richardson , Laurent Blanquart , Joey Shah
IPC分类号： H04N5/335 , H04N5/217
CPC分类号： H04N5/361 , H04N5/2176 , H04N5/3658
摘要： A black clamp stabilization circuit for an image sensor utilizes a mixed-signal SoC block comprising sub-blocks to dynamically and precisely adjust the black level based on comparison to a reference black level. The black level adjustments include a first level regulation using digital control of an analog signal in a feedback loop that includes a programmable gain amplifier and high-resolution A/D converter. By applying the black clamping in the analog domain, dynamic range is extended. Additional black level regulation is subsequently performed in the digital domain to differentially eliminate line noise and column noise generated within the imaging System-on-Chip. By providing information between the sub-blocks, the algorithms can converge more quickly. The technique enables multiple signal paths to separately handle individual colors and to increase imaging data throughput.
摘要翻译：用于图像传感器的黑色钳位稳定电路利用包括子块的混合信号SoC块，以基于与参考黑色电平的比较来动态且精确地调整黑色电平。黑电平调节包括使用包括可编程增益放大器和高分辨率A / D转换器的反馈环路中的模拟信号的数字控制的第一电平调节。通过在模拟域中施加黑色钳位，可以延长动态范围。随后在数字域中执行额外的黑电平调节，以差分消除在成像片上系统中产生的线噪声和列噪声。通过在子块之间提供信息，算法可以更快地收敛。该技术使得多个信号路径可以分开处理各种颜色并增加成像数据吞吐量。

2. 发明申请

US20080218615A1 Apparatus and method for stabilizing image sensor black level 有权
标题翻译：用于稳定图像传感器黑色电平的装置和方法
公开(公告)号：US20080218615A1
公开(公告)日：2008-09-11
申请号：US11715808
申请日：2007-03-07
申请人： Ying Huang , Giuseppe Rossi , Roberto Marchesini , Qianjiang (Bob) Mao , John Wallner , John Richardson , Laurent Blanquart , Joey Shah
发明人： Ying Huang , Giuseppe Rossi , Roberto Marchesini , Qianjiang (Bob) Mao , John Wallner , John Richardson , Laurent Blanquart , Joey Shah
IPC分类号： H04N5/335
CPC分类号： H04N5/361 , H04N5/2176 , H04N5/3658
摘要： A black clamp stabilization circuit for an image sensor utilizes a mixed-signal SoC block comprising sub-blocks to dynamically and precisely adjust the black level based on comparison to a reference black level. The black level adjustments include a first level regulation using digital control of an analog signal in a feedback loop that includes a programmable gain amplifier and high-resolution A/D converter. By applying the black clamping in the analog domain, dynamic range is extended. Additional black level regulation is subsequently performed in the digital domain to differentially eliminate line noise and column noise generated within the imaging System-on-Chip. By providing information between the sub-blocks, the algorithms can converge more quickly. The technique enables multiple signal paths to separately handle individual colors and to increase imaging data throughput.
摘要翻译：用于图像传感器的黑色钳位稳定电路利用包括子块的混合信号SoC块，以基于与参考黑色电平的比较来动态且精确地调整黑色电平。黑电平调节包括使用包括可编程增益放大器和高分辨率A / D转换器的反馈环路中的模拟信号的数字控制的第一电平调节。通过在模拟域中施加黑色钳位，可以延长动态范围。随后在数字域中执行额外的黑电平调节，以差分消除在成像片上系统中产生的线噪声和列噪声。通过在子块之间提供信息，算法可以更快地收敛。该技术使得多个信号路径可以分开处理各种颜色并增加成像数据吞吐量。

3. 发明申请

US20090278951A1 Apparatus and methods for multi-sensor synchronization 审中-公开
标题翻译：多传感器同步的装置和方法
公开(公告)号：US20090278951A1
公开(公告)日：2009-11-12
申请号：US12151917
申请日：2008-05-08
申请人： Markus Loose , Ying Huang , Giuseppe Rossi , Roberto Marchesini , Gaurang Patel , Qianjiang (Bob) Mao , Gregory Chow , John Wallner
发明人： Markus Loose , Ying Huang , Giuseppe Rossi , Roberto Marchesini , Gaurang Patel , Qianjiang (Bob) Mao , Gregory Chow , John Wallner
IPC分类号： H04N5/228 , H04N5/225 , H04N5/04 , H03L7/00
CPC分类号： H04N5/247 , H04N5/04
摘要： Apparatus and methods for synchronizing a plurality of image sensors in a video camera system. In one embodiment, a method includes generating a video sync signal, and resetting at least one internal clock divider in each image sensor in synchronization with the video sync signal at the beginning of each video frame. Another embodiment of a method of synchronizing a plurality of image sensors in a video camera system includes detecting a phase state of a signal of at least one internal clock divider in each sensor, wherein the phase state is relative to a system sync signal, and selecting a video output signal for each sensor based on the detected phase state of the at least one internal divider. In a third embodiment, the method includes asserting an asynchronous reset signal, stopping the system clocks in the system, de-asserting the asynchronous reset signal, while the system clocks are stopped, and restarting the system clocks. Each method may be used individually, or the methods can be combined in any combination. A video camera apparatus is also described.
摘要翻译：用于在摄像机系统中同步多个图像传感器的装置和方法。在一个实施例中，一种方法包括在每个视频帧的开始处与视频同步信号同步地生成视频同步信号，并且在每个图像传感器中复位至少一个内部时钟分频器。在摄像机系统中同步多个图像传感器的方法的另一实施例包括检测每个传感器中的至少一个内部时钟分频器的信号的相位状态，其中相位状态相对于系统同步信号，并且选择基于所述至少一个内部分配器的检测到的相位状态的每个传感器的视频输出信号。在第三实施例中，该方法包括断言异步复位信号，停止系统中的系统时钟，在系统时钟停止时取消断言异步复位信号，并重启系统时钟。每种方法可以单独使用，也可以以任何组合的方式组合。还描述了摄像机装置。

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