公开(公告)号：US11800040B2

公开(公告)日：2023-10-24

申请号：US17326332

申请日：2021-05-21

申请人： Axis AB

发明人： Johan Jeppsson Karlin ,  Jimmie Jönsson

IPC分类号： H04N5/16 ,  H04N5/57 ,  H04N25/63 ,  H04N9/64

CPC分类号： H04N5/165 ,  H04N5/57 ,  H04N25/63 ,  H04N9/64

摘要： The present disclosure relates to a method performed by a deviation analyzing system (1) for black level drift assessment of a digital camera image sensor (21). The deviation analyzing system measures (1001) for pixels of an image captured by the image sensor, a respective luminance value and corresponding chromaticity value of each pixel. The deviation analyzing system further determines (1002) a respective average chromaticity value for differing luminance levels of the measured luminance values, based on for each luminance level averaging the corresponding measured chromaticity values. Moreover, the deviation analyzing system determines (1003), when the respective average chromaticity values of a range (4) of luminance levels indicate—to a predeterminable extent—chromaticity deviations (5) from the respective average chromaticity values (6) of other luminance levels (7), that a black level setting of the image sensor is drifted from a true black level.
The disclosure also relates to a deviation analyzing system in accordance with the foregoing, a digital camera comprising such a deviation analyzing system, and a respective corresponding computer program product and non-volatile computer readable storage medium.

公开(公告)号：US09392209B1

公开(公告)日：2016-07-12

申请号：US13083415

申请日：2011-04-08

申请人： Dominic M. Kotab

发明人： Dominic M. Kotab

IPC分类号： H04N5/76 ,  H04N5/445 ,  H04N7/18 ,  H04N7/173 ,  H04N21/231 ,  G06F13/00 ,  G06F15/16 ,  H04N5/781 ,  H04N5/16 ,  H04N5/44 ,  H04N7/10 ,  H04L29/06 ,  G06F12/02 ,  G06F3/06

CPC分类号： H04N5/76 ,  G06F3/0601 ,  G06F3/067 ,  G06F12/0246 ,  H04L29/06 ,  H04L67/1097 ,  H04N5/165 ,  H04N5/4401 ,  H04N5/765 ,  H04N5/781 ,  H04N7/106 ,  H04N7/17318 ,  H04N21/231 ,  H04N21/2393 ,  H04N21/4334 ,  H04N21/4335 ,  H04N21/4435 ,  H04N21/47214

摘要： In one general embodiment, a method includes, or a system has logic for, receiving a request to record a television program on a first output device; determining that recording the television program conflicts with a scheduled recording; and downloading the television program from a server in response to determining that the recording thereof conflicts with another scheduled recording. Additional systems and methods are also presented.

摘要翻译： 在一个一般实施例中，一种方法包括或者系统具有用于在第一输出设备上接收记录电视节目的请求的逻辑; 确定记录电视节目与预定的录制相冲突; 以及响应于确定其记录与另一预定记录相冲突，从服务器下载电视节目。 还介绍了其他系统和方法。

公开(公告)号：US08520151B2

公开(公告)日：2013-08-27

申请号：US12798947

申请日：2010-04-14

申请人： Carlos Correa ,  Cedric Thebault

发明人： Carlos Correa ,  Cedric Thebault

IPC分类号： H04N5/16 ,  H04N9/12 ,  G09G3/30

CPC分类号： G09G3/2003 ,  G09G2320/0242 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/106

摘要： Luminous elements of the three colors red, green and blue of video display devices have a different response time. Therefore, a colored edge and trail appear at edges in direction of a moving object. In order to reduce the disturbing character of such colored edges and trails, a horizontal spatial equalization of the response time of luminous elements having a shorter response time by low-pass filtering a component signal of the video component signals for driving luminous elements having a shorter response time dependent on a horizontal speed of changes of the component signal is recommended to reduce phosphor lag artifacts on display devices. The arrangement for processing video component signals of different color comprises a compensation unit which according to a preferred embodiment is realized by a FIR filter and a horizontal speed correction unit supplied with a horizontal and vertical motion estimation signal.

摘要翻译： 视频显示设备的红，绿，蓝三色发光元件具有不同的响应时间。 因此，在移动物体的方向上的边缘出现着色的边缘和轨迹。 为了减少这种彩色边缘和痕迹的干扰特性，通过对具有较短的发光元件的视频分量信号的分量信号进行低通滤波，对具有较短响应时间的发光元件响应时间的水平空间均衡 建议响应时间取决于分量信号变化的水平速度，以减少显示设备上的磷光体滞后伪影。 用于处理不同颜色的视频分量信号的装置包括一个补偿单元，该补偿单元根据优选实施例由FIR滤波器和被提供水平和垂直运动估计信号的水平速度校正单元来实现。

公开(公告)号：US08472792B2

公开(公告)日：2013-06-25

申请号：US11258496

申请日：2005-10-24

申请人： Abou Ul Aala Ahsan Butt ,  Steve R. Bramwell ,  Brian T. Fudge

发明人： Abou Ul Aala Ahsan Butt ,  Steve R. Bramwell ,  Brian T. Fudge

IPC分类号： H04N5/783 ,  H04N5/16 ,  H04N5/89 ,  H04N5/92 ,  H04N5/93 ,  H04N7/12 ,  H04N7/173 ,  H04N9/80 ,  G06F9/455 ,  G06F15/16 ,  G06F17/00 ,  G06K9/36

CPC分类号： G11B27/3027 ,  G11B20/10 ,  G11B27/322 ,  H04N7/17318 ,  H04N19/107 ,  H04N19/117 ,  H04N19/126 ,  H04N19/149 ,  H04N19/152 ,  H04N19/154 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/192 ,  H04N19/196 ,  H04N19/198 ,  H04N19/48 ,  H04N19/577 ,  H04N19/61 ,  H04N19/625 ,  H04N19/80 ,  H04N19/85 ,  H04N21/42646 ,  H04N21/8106 ,  H04N21/8133 ,  H04N21/84 ,  H04N21/8455 ,  H04N21/8456 ,  H04N21/85406 ,  H04N21/8543 ,  H04N21/8586

摘要： A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, a complete index that can be used to locate each data chunk in each of these tracks and an abridged index that can enable the location of a subset of the data chunks in each track, data that can be used to generate a menu interface to access the contents of the file and ‘meta data’ concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and ‘meta data’ external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames, a first index that includes information indicative of the location within the file and characteristics of each encoded video frame and a separate second index that includes information indicative of the location within the file of a subset of the encoded video frames.

摘要翻译： 描述多媒体文件以及生成，分发和使用多媒体文件的方法。 根据本发明的实施例的多媒体文件可以包含多个视频轨道，多个音轨，多个字幕轨道，可用于定位这些轨道中的每一个中的每个数据块的完整索引，以及可以使位置 每个轨道中的数据块的子集的数据，可用于生成用于访问文件内容的菜单界面的数据和关于文件内容的“元数据”。 根据本发明的多个实施例的多媒体文件还包括对文件外部的视频轨道，音轨，字幕轨道和“元数据”的引用。 根据本发明的多媒体文件的一个实施例包括一系列编码视频帧，包括指示文件内的位置的信息和每个编码视频帧的特征的第一索引以及包括指示 编码视频帧的子集中文件内的位置。

公开(公告)号：US08384795B2

公开(公告)日：2013-02-26

申请号：US12751495

申请日：2010-03-31

申请人： Ji-hyun Goh

发明人： Ji-hyun Goh

IPC分类号： H04N5/228 ,  H04N5/16

CPC分类号： H04N5/2351

摘要： Provided are a digital image signal processing method including determining a saturation condition by comparing a delta between a plurality of pieces of image data of an input image exhibiting different color components with a standard for white scene recognition, determining a bright condition by using a distribution of grey levels of the input image, and determining that the input image is a white scene when the input image satisfies the saturation condition and the bright condition, and a digital image signal apparatus for executing the method, and a medium having recorded thereon the method. Thus, a white scene is quickly and accurately determined. And settings of the digital image signal processing apparatus can be properly set for capturing the white scene.

摘要翻译： 提供了一种数字图像信号处理方法，包括通过将表现出不同颜色分量的输入图像的多个图像数据与白色场景识别的标准之间的差值进行比较来确定饱和度条件，通过使用 输入图像的灰度级，并且当输入图像满足饱和条件和亮度条件时，确定输入图像是白色场景，以及用于执行该方法的数字图像信号装置，以及记录有该方法的介质。 因此，快速准确地确定白色场景。 并且可以适当地设置数字图像信号处理装置的设置以捕获白色场景。

公开(公告)号：US20120194746A1

公开(公告)日：2012-08-02

申请号：US13417798

申请日：2012-03-12

申请人： RAYMOND WILLIAM HALL ,  DONALD E. PARRECO

发明人： RAYMOND WILLIAM HALL ,  DONALD E. PARRECO

IPC分类号： H04N5/16

CPC分类号： H04N9/72

摘要： A feedback circuit for restoration of DC in electrical signals is presented. A sample pulse representing a DC portion of an electrical signal is generated. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the electrical signal during this DC portion. The offset voltage feeds back through a summing node to the electrical signal thereby restoring the video signal to the desired DC voltage level with respect to ground.

摘要翻译： 提出了一种用于恢复电信号中DC的反馈电路。 产生表示电信号的DC部分的采样脉冲。 采样脉冲触发采样和保持电路以在该DC部分期间获取电信号中的正确偏移电压。 偏移电压通过加法节点反馈到电信号，从而将视频信号恢复到相对于地面的期望的DC电压电平。

公开(公告)号：US07940335B2

公开(公告)日：2011-05-10

申请号：US11571913

申请日：2005-07-04

申请人： Kinya Takama ,  Daisuke Onishi

发明人： Kinya Takama ,  Daisuke Onishi

IPC分类号： H04N5/16

CPC分类号： H04N5/16

摘要： A video signal output circuit includes a sync-tip clamp circuit fixing a sync-tip level of an input video signal at a constant voltage, a low-pass filter receiving the video signal output from the sync-tip clamp circuit and eliminating a predetermined high-frequency component, a dummy circuit receiving the video signal output from the sync-tip clamp circuit and outputting the video signal having substantially the same sync-tip level as that of the video signal output from the low-pass filter, and an output driver receiving the video signal output from the low-pass filter and outputting the video signal with a low output impedance. The sync-tip clamp circuit controls the sync-tip level of the video signal output from the dummy circuit such that the sync-tip level of the video signal is equal to a predetermined reference voltage.

摘要翻译： 视频信号输出电路包括固定恒定电压的输入视频信号的同步电平的同步尖端钳位电路，接收从同步钳位电路输出的视频信号的低通滤波器，并消除预定的高电平 接收从同步尖端钳位电路输出的视频信号的虚拟电路，并输出具有与从低通滤波器输出的视频信号基本相同的同步尖电平的视频信号，以及输出驱动器 接收从低通滤波器输出的视频信号并以低输出阻抗输出视频信号。 同步尖端钳位电路控制从虚拟电路输出的视频信号的同步尖端电平，使得视频信号的同步尖端电平等于预定的参考电压。

公开(公告)号：US07692607B2

公开(公告)日：2010-04-06

申请号：US11453929

申请日：2006-06-16

申请人： Hsu-Pin Kao ,  Yi-Sheng Yu ,  Yi-Chia Shan ,  Tsan-Hung Tsai

发明人： Hsu-Pin Kao ,  Yi-Sheng Yu ,  Yi-Chia Shan ,  Tsan-Hung Tsai

IPC分类号： G09G3/28 ,  G09G3/10 ,  H04N5/202 ,  H04N9/64 ,  H04N5/16 ,  H04N9/097

CPC分类号： G09G3/20 ,  G09G3/2059 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0666 ,  G09G2360/16

摘要： A method for adjusting an image on the basis of characteristics of a display system is provided. The image includes M horizontal lines. Each of the M horizontal lines respectively includes N pixels. Each pixel has an original gray level. A look-up table previously stores a plurality of conversion coefficients related to the characteristics of the display system. The method first calculates an ith loading according to the N original gray levels of the N pixels in the ith horizontal line. Based on the ith loading, an ith conversion coefficient corresponding to the ith loading is selected from the plurality of conversion coefficients in the look-up table. The method respectively multiplies the N original gray levels of the N pixels in the ith horizontal line by the ith conversion coefficient to generate N new gray levels for the N pixels in the ith horizontal line, whereby the image is adjusted.

摘要翻译： 提供了一种基于显示系统的特性来调整图像的方法。 图像包括M个水平线。 M个水平线中的每一个分别包括N个像素。 每个像素都有一个原始的灰度级。 查找表预先存储与显示系统的特性相关的多个转换系数。 该方法首先根据第i个水平行中的N个像素的N个原始灰度级来计算第i个加载。 基于第i个加载，从查找表中的多个转换系数中选择对应于第i个加载的第i个转换系数。 该方法分别将第i个水平行中的N个像素的N个原始灰度级乘以第i个转换系数，以对第i个水平行中的N个像素产生N个新的灰度级，从而调整图像。

公开(公告)号：US20100020243A1

公开(公告)日：2010-01-28

申请号：US12521968

申请日：2008-09-09

申请人： Katsuyuki Kitano ,  Keiichi Kuzumoto ,  Atsuhisa Kageyama

发明人： Katsuyuki Kitano ,  Keiichi Kuzumoto ,  Atsuhisa Kageyama

IPC分类号： H04N5/16

CPC分类号： H04N5/18 ,  G09G5/003 ,  H04N5/46 ,  H04N21/426 ,  H04N21/4436

摘要： In a video signal processor (10), a video signal is given to a video input terminal (101) via a coupling capacitor (200). A clamp circuit (104) clamps the video signal input via the video input terminal (101). A format detector section (105) detects a format of the video signal. A controller section (107) changes power supply capability of the clamp circuit (104) according to a detection result of the format detector section (105).

摘要翻译： 在视频信号处理器（10）中，通过耦合电容器（200）向视频输入端子（101）提供视频信号。 钳位电路（104）经由视频输入端（101）钳位输入的视频信号。 格式检测器部分（105）检测视频信号的格式。 控制部（107）根据格式检测部（105）的检测结果来改变钳位电路（104）的供电能力。

公开(公告)号：US07652723B1

公开(公告)日：2010-01-26

申请号：US11082370

申请日：2005-03-16

申请人： David Patton ,  Richard Frey ,  Edward Brannan

发明人： David Patton ,  Richard Frey ,  Edward Brannan

IPC分类号： H04N5/16

CPC分类号： H04N5/16

摘要： In one embodiment, a signal processing system is provided that includes: (a) a video input 400 operable to receive a first analog video signal and remove the DC voltage offset component from the video signal to form a DC-adjusted analog video signal; and (b) DC restore circuitry 416 operable to set an average DC voltage of a first portion of the DC-adjusted analog video signal to a ground reference voltage to yield a DC-adjusted analog video signal. The DC-restored analog video signal is then provided to an Analog-to-Digital or A/D converter 112 for conversion into a digital video signal.

摘要翻译： 在一个实施例中，提供了一种信号处理系统，其包括：（a）视频输入端400，用于接收第一模拟视频信号，并从视频信号中去除直流电压偏移分量以形成直流调节的模拟视频信号; 和（b）DC恢复电路416，其可操作以将DC调整的模拟视频信号的第一部分的平均DC电压设置为接地参考电压，以产生DC调整的模拟视频信号。 然后将DC恢复的模拟视频信号提供给模拟数字或A / D转换器112，以转换成数字视频信号。