-
1.发明专利
公开(公告)号：JP2004336747A
公开(公告)日：2004-11-25
申请号：JP2004129330
申请日：2004-04-26
Inventor： BORG MATTHEW M , VOOK DIETRICH WERNER
CPC classification number: H04N5/3698 , H04N5/235 , H04N5/2351 , H04N5/374
Abstract: PROBLEM TO BE SOLVED: To provide a means for minimizing pixel noise and maximizing a dynamic range by optimizing a power source for a pixel array of an image sensor.
SOLUTION: A power source 205 is adjusted in accordance with an exposure level of a pixel array 203 when the pixel array 203 captures an image. When the exposure level is comparatively high, voltage of the power source 205 is increased to widen the dynamic range of the pixel array 203. In a state that the exposure level is comparatively low and the dynamic range of the pixel array 203 is not fully used, the voltage of the power source 205 is decreased to lower a level of the pixel noise, thereby reducing an influence of the pixel noise upon picture quality.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供通过优化图像传感器的像素阵列的电源来最小化像素噪声并最大化动态范围的装置。 解决方案：当像素阵列203捕获图像时，根据像素阵列203的曝光水平调整电源205。 当曝光水平相对较高时，电源205的电压增加，以加宽像素阵列203的动态范围。在曝光水平相对较低并且像素阵列203的动态范围未被完全使用的状态 电源205的电压被降低以降低像素噪声的电平，从而减少像素噪声对图像质量的影响。 版权所有（C）2005，JPO＆NCIPI
-
2.发明专利
公开(公告)号：JP2006325211A
公开(公告)日：2006-11-30
申请号：JP2006136260
申请日：2006-05-16
Applicant: AGILENT TECHNOLOGIES INC
Inventor： ZHANG XUEMEI , BAER RICHARD L , VOOK DIETRICH WERNER
Abstract: PROBLEM TO BE SOLVED: To provide an image processing system and method for subtracting dark noise from images without requiring use of "black pixel". SOLUTION: An image processing system 10 subtracts dark noise out of images based on a dark noise scale factor 220. The image processing system 10 includes an image sensor 20 for capturing a current image and producing current image data 50 representing the current image. The current image data 50 include both a dark noise signal and an image signal 90. The dark noise scale factor 220 for the current image is estimated from the current image data 50 and reference image data 80 representing a reference dark noise signal. The reference dark noise signal is scaled by the dark noise scale factor 220 to produce a scaled dark noise signal, and this signal is subtracted from the current image data 50 to produce the image signal 90. COPYRIGHT: (C)2007,JPO&INPIT
-
公开(公告)号：JP2007159132A
公开(公告)日：2007-06-21
申请号：JP2006325604
申请日：2006-12-01
Inventor： VOOK DIETRICH WERNER , SRIKANTAM VAMSI KRISHNA , FERNANDEZ ANDREW
IPC: H03K5/00
CPC classification number: G06F1/04 , H03K5/135 , H03K2005/00058 , H03K2005/00241
Abstract: PROBLEM TO BE SOLVED: To trigger an event in a fraction of a clock cycle.
SOLUTION: A trigger circuit (200) can have two or more input circuits for outputting event signals. The event signals are received by one of two or more delay circuits (204) that trigger the event signal (118) at given phase of the clock cycle, by transferring the event signal from the first clock region to another clock region. By triggering event with phase division, the trigger circuit (200) can output the signal at a speed higher than the clock cycle.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 要解决的问题：以几分之一时钟周期触发事件。 触发电路（200）可以具有用于输出事件信号的两个或多个输入电路。 事件信号由在时钟周期的给定阶段触发事件信号（118）的两个或更多个延迟电路（204）中的一个接收，通过将事件信号从第一时钟区域传送到另一时钟区域。 通过触发相位分配事件，触发电路（200）可以以比时钟周期高的速度输出信号。 版权所有（C）2007，JPO＆INPIT
-
4.发明专利
公开(公告)号：JP2007157147A
公开(公告)日：2007-06-21
申请号：JP2006325603
申请日：2006-12-01
IPC: G06F1/06
CPC classification number: H04L7/0338
Abstract: PROBLEM TO BE SOLVED: To time-stamping events for fractions of a clock cycle. SOLUTION: A time-stamping circuit (200) is provided with two or more detection circuits (202). Each detection circuit (202) receives an event-in signal (114) so as to generate an event signal on the basis of a clock phase at which the event-in signal is received. A decoder (204) receives the event signal and outputs an event-out signal (118) and a time stamp (116) showing a phase at which the event-in signal is detected. By time-stamping the event-in signal (114) to the phase division, the time-stamping circuit (200) detects the event signal occurring at a rate faster than the clock cycle. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：对时钟周期的一小部分进行时间戳。 时间戳电路（200）具有两个或更多个检测电路（202）。 每个检测电路（202）接收事件输入信号（114），以便基于接收到事件输入信号的时钟相位产生一个事件信号。 解码器（204）接收事件信号并输出表示检测到事件输入信号的相位的事件输出信号（118）和时间戳（116）。 通过将事件输入信号（114）时间戳到相位分割，时间戳电路（200）以比时钟周期更快的速率检测出事件信号。 版权所有（C）2007，JPO＆INPIT
-
公开(公告)号：JP2003092707A
公开(公告)日：2003-03-28
申请号：JP2002182265
申请日：2002-06-24
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BAHARAV IZHAK , KAKARALA RAMAKRISHNA , ZHANG XUEMEI , VOOK DIETRICH WERNER
Abstract: PROBLEM TO BE SOLVED: To provide an image sensing device for detecting/correcting a bad pixel where memory requirements of buffers are minimized. SOLUTION: A sensor includes an array of photodetectors each generating an output signal of pixel data indicative of incident light intensity. The pixel data are read out from the array one line at a time and stored in a line buffer (116). A bad pixel processor (110) includes a first buffer (104) that stores pixel data obtained from the line buffer (116) for a certain pixel in a currently read out line and pixel signal light data for pixels adjacent to the certain pixel (108). An included second buffer (122) stores features (124) that are indicative of whether the pixels in a previously read out line were identified as bad pixels. Using the information in the first and second buffers, the processor identifies whether the certain pixel is a bad pixel.
-
Patent Agency Ranking
公开(公告)号：DE102006011702A1
公开(公告)日：2006-11-23
申请号：DE102006011702
申请日：2006-03-14
Applicant: AGILENT TECHNOLOGIES INC
Inventor： ZHANG XUEMEI , BAER RICHARD L , VOOK DIETRICH WERNER
Abstract: An image processing system subtracts dark noise out of images based on a dark noise scale factor. The image processing system includes an image sensor for capturing a current image and producing current image data representing the current image. The current image data includes both a dark noise signal and an image signal. The dark noise scale factor for the current image is estimated from the current image data and reference image data representing a reference dark noise signal. The reference dark noise signal is scaled by the dark noise scale factor to produce a scaled dark noise signal from which the current image data is subtracted to produce the image signal.
-
公开(公告)号：GB2401274B
公开(公告)日：2006-05-10
申请号：GB0406232
申请日：2004-03-19
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BORG MATTHEW M , VOOK DIETRICH WERNER
Abstract: A method and apparatus for optimizing the voltage supply of an image sensor pixel array to minimize pixel noise and maximize dynamic range is disclosed. The voltage supply is adjusted in response to the exposure level of the pixel array when it captures an image. The voltage supply is increased in higher exposure levels to expand the dynamic range of the pixel array. In lower exposure levels, when the full dynamic range of the pixel array is not utilized, the voltage supply is decreased to lower pixel noise level and reduce its effect on image quality.
-
公开(公告)号：DE102007049805A1
公开(公告)日：2008-05-08
申请号：DE102007049805
申请日：2007-10-17
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BARFORD LEE A , HAMILTON BRUCE , VOOK DIETRICH WERNER
Abstract: Labeling asymmetric network cables for improved network clock synchronization. Time asymmetries between pairs in a network cable are identified and associated with individual cables. This time asymmetry information is used to improve clock synchronization according to the IEEE-1588 standard. The time asymmetry information may be stored in a database and associated with a serial number on the cable, or may be associated with the cable in human and/or machine readable form.
-
公开(公告)号：DE60215726D1
公开(公告)日：2006-12-14
申请号：DE60215726
申请日：2002-03-04
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BAHARAV IZHAK , KAKARALA RAMAKRISHNA , ZHANG XUEMEI , VOOK DIETRICH WERNER
-
公开(公告)号：GB2426402A
公开(公告)日：2006-11-22
申请号：GB0609025
申请日：2006-05-05
Applicant: AGILENT TECHNOLOGIES INC
Inventor： ZHANG XUEMEI , BAER RICHARD L , VOOK DIETRICH WERNER
Abstract: An image processing system 10 subtracts dark noise out of images based on a dark noise scale factor. The image processing system includes an image sensor (20, Fig 1) for capturing a current image and producing current image data representing the current image. The current image data includes both a dark noise signal and an image signal. The dark noise scale factor for the current image is estimated 430 from the current image data and reference image data representing a reference dark noise signal. The reference dark noise signal is scaled 440 by the dark noise scale factor to produce a scaled dark noise signal from which the current image data is subtracted to produce 450 the image signal. Regression coefficients, representing linear relations between the current and reference images, may be used. Selected raw sensor values of the current and reference images may be from a dark image portion, randomly selected, or uniformly sample the images.
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.025 seconds)
