Techniques for acquiring and processing statistics data in an image signal processor
    41.
    发明授权
    Techniques for acquiring and processing statistics data in an image signal processor 有权
    用于获取和处理图像信号处理器中的统计数据的技术

    公开(公告)号:US08531542B2

    公开(公告)日:2013-09-10

    申请号:US12873999

    申请日:2010-09-01

    IPC分类号: H04N5/228 H04N9/73 H04N9/64

    摘要: Various techniques are disclosed for processing statistics data in an image signal processor (ISP). In one embodiment, a statistics collection engine may be implemented in a front-end processing unit of the ISP, such that statistics are collected prior to processing by an ISP pipeline downstream from the front-end processing unit. In one embodiment, the statistics collection engine may be configured to acquire statistics relating to auto white-balance, auto-exposure, and auto-focus, as well as flicker detection. Collected statistics may be output to a memory and used by the ISP to process acquired image data.

    摘要翻译: 公开了用于处理图像信号处理器(ISP)中的统计数据的各种技术。 在一个实施例中,可以在ISP的前端处理单元中实现统计收集引擎,使得在从前端处理单元下游的ISP管道处理之前收集统计信息。 在一个实施例中,统计收集引擎可以被配置为获取与自动白平衡,自动曝光和自动对焦以及闪烁检测有关的统计。 收集的统计信息可以被输出到存储器,并由ISP用来处理所获取的图像数据。

    Spatial filtering for image signal processing
    42.
    发明授权
    Spatial filtering for image signal processing 失效
    图像信号处理的空间滤波

    公开(公告)号:US08471932B2

    公开(公告)日:2013-06-25

    申请号:US12895659

    申请日:2010-09-30

    IPC分类号: H04N5/217 H04N9/64 G06K9/40

    摘要: Systems and methods are disclosed for applying spatial filtering to raw image data. For example, a spatial filter may identify an n x n block of pixels from an image frame. The spatial filter has filter taps, each corresponding to one of the pixels of the n x n block. Pixel difference values between the input pixel and each of the neighboring pixels in the n x n block may be determined. Attenuation factors may be determined based on the pixel differences and brightness of the input pixel. Applying the attenuation factors to their respective filtering taps may produce attenuated filtering coefficients that are used to obtain filtered pixel values. By normalizing the sum of the filtered pixel values using the sum of the attenuated filtering coefficients, a spatially filtered output value corresponding to the current input pixel (e.g., located at the center of the n x n block) may be determined.

    摘要翻译: 公开了用于对原始图像数据应用空间滤波的系统和方法。 例如,空间滤波器可以从图像帧识别n×n个像素块。 空间滤波器具有滤波器抽头,每个滤波器抽头对应于n×n块的像素之一。 可以确定输入像素和n×n块中的每个相邻像素之间的像素差值。 可以基于输入像素的像素差和亮度来确定衰减因子。 将衰减因子应用于其各自的滤波抽头可以产生用于获得滤波像素值的衰减滤波系数。 通过使用衰减的滤波系数的和归一化滤波的像素值的和,可以确定对应于当前输入像素(例如,位于n×n块的中心)的空间滤波的输出值。

    Video bitstream transcoding method and apparatus
    43.
    发明授权
    Video bitstream transcoding method and apparatus 有权
    视频比特流代码转换方法和装置

    公开(公告)号:US08208540B2

    公开(公告)日:2012-06-26

    申请号:US11198457

    申请日:2005-08-05

    申请人: Guy Cote

    发明人: Guy Cote

    IPC分类号: H04B1/66

    摘要: A video transcoder is disclosed. The video transcoder generally comprises a processor and a video digital signal processor. The processor may be formed on a first die. The video digital signal processor may be formed on a second die and coupled to the processor. The video digital signal processor may have (i) a first module configured to perform a first operation in decoding an input video stream in a first format and (ii) a second module configured to perform a second operation in coding an output video stream in a second format, wherein the first operation and the second operation are performed in parallel.

    摘要翻译: 公开了视频代码转换器。 视频代码转换器通常包括处理器和视频数字信号处理器。 处理器可以形成在第一管芯上。 视频数字信号处理器可以形成在第二裸片上并耦合到处理器。 视频数字信号处理器可以具有(i)第一模块,其被配置为执行以第一格式对输入视频流进行解码的第一操作,以及(ii)被配置为执行第二操作以对输出视频流进行编码的第二模式 第二格式,其中并行执行第一操作和第二操作。

    Method and/or apparatus for multiple pass digital image stabilization
    44.
    发明授权
    Method and/or apparatus for multiple pass digital image stabilization 有权
    用于多次数字图像稳定的方法和/或装置

    公开(公告)号:US08149911B1

    公开(公告)日:2012-04-03

    申请号:US11675715

    申请日:2007-02-16

    IPC分类号: H04N7/12

    摘要: An apparatus including a first circuit and a second circuit. The first circuit may be configured to generate (i) a first series of sequential frames, (ii) a plurality of local motion vectors for each of said frames, (iii) one or more global motion vectors for each of said frames, (iv) a second series of stabilized sequential frames, (v) a plurality of rough motion vectors and (vi) a digital bitstream in response to (i) a video input signal. The second circuit may be configured to store (i) the first series of sequential frames, (ii) the plurality of local motion vectors, (iii) the one or more global motion vectors, (iv) the second series of stabilized sequential frames and (v) the plurality of rough motion vectors.

    摘要翻译: 一种包括第一电路和第二电路的装置。 第一电路可以被配置为产生(i)第一系列连续帧,(ii)每个所述帧的多个局部运动矢量,(iii)每个所述帧的一个或多个全局运动矢量,(iv )第二系列稳定的顺序帧,(v)多个粗略运动矢量和(vi)响应于(i)视频输入信号的数字比特流。 第二电路可以被配置为存储(i)第一系列连续帧,(ii)多个局部运动矢量,(iii)一个或多个全局运动矢量,(iv)第二系列稳定的顺序帧,以及 (v)多个粗略运动矢量。

    Mobile device with a mobility analyzer and associated methods
    45.
    发明授权
    Mobile device with a mobility analyzer and associated methods 失效
    移动设备与移动分析仪及相关方法

    公开(公告)号:US08140078B2

    公开(公告)日:2012-03-20

    申请号:US11553760

    申请日:2006-10-27

    IPC分类号: H04W36/00 H04W4/00

    CPC分类号: H04W36/32 H04W36/14 H04W36/36

    摘要: A method for operating a wireless mobile device moving through different types of networks includes storing within the wireless mobile device a type of network associated with a respective access node as the wireless mobile device moves through the different types of networks. A type of connectivity available for each access node is stored within the wireless mobile device, as well as location of each access node. The wireless mobile device is operated with a current access node corresponding to one type of network based on a current location of the wireless mobile device. Handoff is initiated by the wireless mobile device from the current access node to another access node corresponding to a different type of network based on movement of the wireless mobile device.

    摘要翻译: 用于操作移动通过不同类型的网络的无线移动设备的方法包括当无线移动设备移动穿过不同类型的网络时,在无线移动设备内存储与相应接入节点相关联的一类网络。 每个接入节点可用的连接类型存储在无线移动设备内,以及每个接入节点的位置。 基于无线移动设备的当前位置,无线移动设备使用与一种类型的网络相对应的当前接入节点来操作。 基于无线移动设备的移动,切换由无线移动设备从当前接入节点发起到对应于不同类型的网络的另一个接入节点。

    Integrated Camera Image Signal Processor and Video Encoder
    46.
    发明申请
    Integrated Camera Image Signal Processor and Video Encoder 有权
    集成摄像机图像信号处理器和视频编码器

    公开(公告)号:US20110090364A1

    公开(公告)日:2011-04-21

    申请号:US12979550

    申请日:2010-12-28

    IPC分类号: H04N5/225

    摘要: An apparatus including a first circuit and a second circuit. The first circuit may be configured to perform image signal processing using encoding related information. The second circuit may be configured to encode image data using image signal processing related information, wherein said first circuit is further configured to pass said image signal processing related information to said second circuit and said second circuit is further configured to pass said encoding related information to said first circuit.

    摘要翻译: 一种包括第一电路和第二电路的装置。 第一电路可以被配置为使用编码相关信息来执行图像信号处理。 第二电路可以被配置为使用图像信号处理相关信息对图像数据进行编码,其中所述第一电路还被配置为将所述图像信号处理相关信息传递到所述第二电路,并且所述第二电路还被配置为将所述编码相关信息传递到 说第一个电路。

    Method and apparatus for H.264 to MPEG-2 video transcoding
    47.
    发明授权
    Method and apparatus for H.264 to MPEG-2 video transcoding 有权
    用于H.264到MPEG-2视频转码的方法和装置

    公开(公告)号:US07881384B2

    公开(公告)日:2011-02-01

    申请号:US11198455

    申请日:2005-08-05

    IPC分类号: H04B1/66

    摘要: A method for transcoding from an H.264 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the H.264 format to generate a picture having a plurality of macroblock pairs that used an H.264 macroblock adaptive field/frame coding; (B) determining a mode indicator for each of the macroblock pairs; and (C) coding the macroblock pairs into an output video stream in the MPEG-2 format using one of (i) an MPEG-2 field mode coding and (ii) an MPEG-2 frame mode coding as determined from the mode indicators.

    摘要翻译: 公开了一种从H.264格式转换为MPEG-2格式的方法。 该方法通常包括以下步骤:(A)以H.264格式解码输入视频流,以产生具有使用H.264宏块自适应字段/帧编码的多个宏块对的图像; (B)确定每个宏块对的模式指示符; 以及(C)使用MPEG-2场模式编码和(ii)从模式指示符确定的MPEG-2帧模式编码之一,将宏块对编码为MPEG-2格式的输出视频流。

    Integrated camera image signal processor and video encoder
    48.
    发明授权
    Integrated camera image signal processor and video encoder 有权
    集成摄像机图像信号处理器和视频编码器

    公开(公告)号:US07859574B1

    公开(公告)日:2010-12-28

    申请号:US11410729

    申请日:2006-04-25

    摘要: An apparatus including a first circuit and a second circuit. The first circuit may be configured to perform image signal processing using encoding related information. The second circuit may be configured to encode image data using image signal processing related information, wherein said first circuit is further configured to pass said image signal processing related information to said second circuit and said second circuit is further configured to pass said encoding related information to said first circuit.

    摘要翻译: 一种包括第一电路和第二电路的装置。 第一电路可以被配置为使用编码相关信息来执行图像信号处理。 第二电路可以被配置为使用图像信号处理相关信息对图像数据进行编码,其中所述第一电路还被配置为将所述图像信号处理相关信息传递到所述第二电路,并且所述第二电路还被配置为将所述编码相关信息传递到 说第一个电路。

    System and method for improving transrating of MPEG-2 video
    49.
    发明授权
    System and method for improving transrating of MPEG-2 video 有权
    改进MPEG-2视频转换的系统和方法

    公开(公告)号:US07804899B1

    公开(公告)日:2010-09-28

    申请号:US09905600

    申请日:2001-07-13

    IPC分类号: H04B1/66

    CPC分类号: H04N7/24

    摘要: The present invention discloses how a transcoder may be used to reduce the bit rate of an MPEG-2 stream by transmitting only the visible area of the movie specified by pan-scan directives. Because the pan-scan conversion is performed prior to transmission, not immediately before display, the non-viewed portion of video does not need to be transmitted.

    摘要翻译: 本发明公开了如何通过仅传送由pan-scan指令指定的电影的可见区域来降低MPEG-2流的比特率的代码转换器。 由于在发送前进行全景扫描转换,不是在显示之前立即进行,所以不需要发送视频的非观看部分。

    Programmable quantization dead zone and threshold for standard-based H.264 and/or VC1 video encoding
    50.
    发明授权
    Programmable quantization dead zone and threshold for standard-based H.264 and/or VC1 video encoding 有权
    基于标准的H.264和/或VC1视频编码的可编程量化死区和阈值

    公开(公告)号:US07620103B2

    公开(公告)日:2009-11-17

    申请号:US11010029

    申请日:2004-12-10

    IPC分类号: H04N7/30 H04N7/50

    摘要: A video encoder is disclosed that includes an encoder circuit, a quantizer circuit and a control circuit. The encoder circuit may be configured to generate a number of coefficient values in response to a video stream and a number of quantized values. The quantizer circuit may be configured to generate the number of quantized values in response to the coefficient values, two or more quantization dead zones and two or more offsets. The control circuit may be configured to set the two or more quantization dead zones and the two or more offsets to different values. The two or more quantization dead zones and the two or more offsets are independently programmable.

    摘要翻译: 公开了包括编码器电路,量化器电路和控制电路的视频编码器。 编码器电路可以被配置为响应于视频流和多个量化值而生成多个系数值。 量化器电路可以被配置为响应于系数值,两个或更多个量化死区和两个或更多个偏移量而产生量化值的数量。 控制电路可以被配置为将两个或更多个量化死区和两个或更多个偏移设置为不同的值。 两个或多个量化死区和两个或更多个偏移是可独立编程的。