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41. 发明申请

US20120195372A1 JOINT FRAME RATE AND RESOLUTION ADAPTATION 有权
标题翻译：联合框架速度和分辨率适应
公开(公告)号：US20120195372A1
公开(公告)日：2012-08-02
申请号：US13018298
申请日：2011-01-31
申请人： Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
发明人： Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： H04N7/32 , H04N7/12
CPC分类号： H04N19/156 , H04N19/126 , H04N19/146 , H04N19/61
摘要： A video coder employs techniques for applying frame rate adaptation and variable resolution adaptation in response to environmental coding factors present at the coding terminal. According to such techniques, a coder may estimate a coding quality level to be applied based on the environmental coding factors. The coder may retrieve from a controller table, settings for resolution and frame rate based on the estimated quality level. Optionally, the coder further may retrieve settings identifying a range of quantization parameters that may be used during coding. Prior to coding, the coder may configure input video data to match the resolution and frame rate settings retrieved from the controller table. Thereafter, the coder may code the reconfigured input video data by motion-compensation prediction constrained, as applicable, by the retrieved quantization parameter range.
摘要翻译：视频编码器根据存在于编码终端处的环境编码因素，采用应用帧速率适配和可变分辨率自适应的技术。根据这样的技术，编码器可以基于环境编码因素估计要应用的编码质量等级。编码器可以根据估计的质量水平从控制器表检索分辨率和帧速率的设置。可选地，编码器还可以检索识别可能在编码期间使用的量化参数的范围的设置。在编码之前，编码器可以配置输入视频数据以匹配从控制器表检索的分辨率和帧率设置。此后，编码器可以通过运动补偿预测约束（如适用）通过检索的量化参数范围对重新配置的输入视频数据进行编码。

42. 发明授权

US08077256B1 Scene-aware automatic-exposure control 有权
标题翻译：场景感知自动曝光控制
公开(公告)号：US08077256B1
公开(公告)日：2011-12-13
申请号：US12793848
申请日：2010-06-04
申请人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
发明人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
IPC分类号： H04N5/238
CPC分类号： H04N5/2351
摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.
摘要翻译：场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

43. 发明授权

US09723315B2 Frame encoding selection based on frame similarities and visual quality and interests 有权
公开(公告)号：US09723315B2
公开(公告)日：2017-08-01
申请号：US13443745
申请日：2012-04-10
申请人： Douglas Scott Price , Xiaosong Zhou , Hsi-Jung Wu
发明人： Douglas Scott Price , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： H04N7/28 , H04N7/32 , H04N7/26 , H04N19/154 , H04N19/172 , H04N19/132 , H04N19/14 , H04N19/137
CPC分类号： H04N19/154 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/172
摘要： A system an method for determining to select frames from a video sequence that have high visual appeal and can be coded at high quality when frame rates of coded video drop to such low levels that perceptual sensations of moving video are lost. A metric is derived from a candidate input frame, and such metric is used to determine whether to increase or decrease a weight accorded to the candidate input frame. In an embodiment, the metric may be the auto-exposure data associated with the candidate input frame.

44. 发明授权

US09635374B2 Systems and methods for coding video data using switchable encoders and decoders 有权
公开(公告)号：US09635374B2
公开(公告)日：2017-04-25
申请号：US13564686
申请日：2012-08-01
申请人： Xiaosong Zhou , Hsi-Jung Wu , Chris Y. Chung , Feng Yi
发明人： Xiaosong Zhou , Hsi-Jung Wu , Chris Y. Chung , Feng Yi
IPC分类号： H04N19/42 , H04N19/12
CPC分类号： H04N19/42 , H04N19/12
摘要： A system and method for switching between multiple encoders or decoders may be implemented to quickly and seamlessly transfer coding operations between two encoders. Before switching from a first encoder to a second encoder, the second encoder is initialized and updated with a copy of the necessary information from the first encoder. Similarly when switching from a first decoder to a second decoder, the second decoder is initialized and the necessary information from the first decoder is passed to the second decoder. A controller may monitor the system to identify a condition that would trigger an encoder switch and identify the encoder that best suits the system conditions. A shared memory unit accessible by either encoder may store the initialization information. A shared decode unit accessible by either encoder may transmit decoded frames between encoders.

45. 发明授权

US09264659B2 Video conference network management for a mobile device 有权
标题翻译：移动设备的视频会议网络管理
公开(公告)号：US09264659B2
公开(公告)日：2016-02-16
申请号：US12794774
申请日：2010-06-06
申请人： Joe S. Abuan , James O. Normile , Hsi-Jung Wu , Yan Yang , Hyeonkuk Jeong , Xiaosong Zhou , Roberto Garcia, Jr.
发明人： Joe S. Abuan , James O. Normile , Hsi-Jung Wu , Yan Yang , Hyeonkuk Jeong , Xiaosong Zhou , Roberto Garcia, Jr.
IPC分类号： H04L12/16 , H04N7/14 , H04N7/15 , G06F3/0484 , G09G5/14 , H04N5/262 , H04N5/272 , H04N5/225
CPC分类号： H04N7/141 , G06F3/04817 , G06F3/04842 , G06F3/04886 , G06F9/451 , G09G5/14 , H04M1/72583 , H04N5/2258 , H04N5/2624 , H04N5/272 , H04N7/147 , H04N7/15
摘要： Some embodiments provide a method for managing a video conference between a first device and a second device. The method identifies a first ceiling bit rate for transmitting video conference data to the second device through the communication channel. The method identifies a current bit rate that is less than the first ceiling bit rate. The method receives networking data regarding the communication channel from the second device. The method determines, from the received network data, that the communication channel will sustain an increase in the current bit rate. The method increments the current bit rate. The method iteratively performs the receiving, determining, and incrementing operations until a determination is made that the communication channel will not sustain the increase in the current bit rate.
摘要翻译：一些实施例提供了一种用于管理第一设备和第二设备之间的视频会议的方法。该方法通过通信信道识别用于将视频会议数据发送到第二设备的第一上限比特率。该方法识别当前比特率小于第一个上限比特率。该方法从第二设备接收关于通信信道的网络数据。该方法从接收到的网络数据确定通信信道将维持当前比特率的增加。该方法会增加当前的比特率。该方法迭代地执行接收，确定和递增操作，直到确定通信信道不会维持当前比特率的增加。

46. 发明授权

US08744420B2 Establishing a video conference during a phone call 有权
标题翻译：在电话会议期间建立视频会议
公开(公告)号：US08744420B2
公开(公告)日：2014-06-03
申请号：US12794766
申请日：2010-06-06
申请人： Elizabeth C. Cranfill , Stephen O. Lemay , Joe S. Abuan , Hsi-Jung Wu , Xiaosong Zhou , Roberto Garcia, Jr.
发明人： Elizabeth C. Cranfill , Stephen O. Lemay , Joe S. Abuan , Hsi-Jung Wu , Xiaosong Zhou , Roberto Garcia, Jr.
IPC分类号： H04M3/42
CPC分类号： H04N7/141 , G06F3/04817 , G06F3/04842 , G06F3/04886 , G06F9/451 , G09G5/14 , H04M1/72583 , H04N5/2258 , H04N5/2624 , H04N5/272 , H04N7/147 , H04N7/15
摘要： Some embodiments provide a method for initiating a video conference using a first mobile device. The method presents, during an audio call through a wireless communication network with a second device, a selectable user-interface (UI) item on the first mobile device for switching from the audio call to the video conference. The method receives a selection of the selectable UI item. The method initiates the video conference without terminating the audio call. The method terminates the audio call before allowing the first and second devices to present audio and video data exchanged through the video conference.
摘要翻译：一些实施例提供了使用第一移动设备发起视频会议的方法。该方法在通过具有第二设备的无线通信网络的音频呼叫期间呈现在第一移动设备上的用于从音频呼叫切换到视频会议的可选择的用户界面（UI）项目。该方法接收可选UI项目的选择。该方法启动视频会议而不终止音频通话。该方法在允许第一和第二设备呈现通过视频会议交换的音频和视频数据之前终止音频呼叫。

47. 发明申请

US20130223525A1 PIXEL PATCH COLLECTION FOR PREDICTION IN VIDEO CODING SYSTEM 审中-公开
标题翻译：在视频编码系统中预测的PIXEL PATCH收集
公开(公告)号：US20130223525A1
公开(公告)日：2013-08-29
申请号：US13463547
申请日：2012-05-03
申请人： Xiaosong Zhou , James Oliver Normile , Hsi-Jung Wu
发明人： Xiaosong Zhou , James Oliver Normile , Hsi-Jung Wu
IPC分类号： H04N7/32
CPC分类号： H04N19/97 , H04N19/103 , H04N19/105 , H04N19/176 , H04N19/20
摘要： In a video coding system, an encoder may include a coding engine to predictively code input video, a decoder to reconstruct reference pictures generated by the coding engine, a reference picture cache to store the reconstructed reference pictures, a patch cache to store prediction patches generated from other sources, and a prediction search unit to search among the reference picture cache and the patch cache to generate prediction references for use by the coding engine while coding input video. The prediction patches may be assembled from a variety of sources including: predefined image content, reference pictures being evicted from the reference picture cache, image content of prior coding sessions and image data stored by applications on a common terminal where the encoder resides. A decoder may store prediction patches in its own patch cache for synchronous decoding.
摘要翻译：在视频编码系统中，编码器可以包括用于预测性地编码输入视频的编码引擎，解码器，以重构由编码引擎生成的参考图片，用于存储重构的参考图片的参考图像高速缓存，用于存储生成的预测补丁的补丁高速缓存以及预测搜索单元，用于在参考图像高速缓存和片段高速缓存之间进行搜索，以生成预测参考，供编码引擎在编码输入视频时使用。预测补丁可以从各种来源进行组合，包括：预定图像内容，从参考图像缓存中逐出的参考图片，先前编码会话的图像内容以及存储在编码器驻留的公共终端上的应用程序存储的图像数据。解码器可以将预测补丁存储在其自己的补丁缓存中用于同步解码。

48. 发明授权

US08451994B2 Switching cameras during a video conference of a multi-camera mobile device 有权
公开(公告)号：US08451994B2
公开(公告)日：2013-05-28
申请号：US12794775
申请日：2010-06-06
申请人： Joe S. Abuan , David A. Eldred , Hyeonkuk Jeong , Roberto Garcia, Jr. , Hsi-Jung Wu , Xiaosong Zhou , Elizabeth C. Cranfill , James O. Normile
发明人： Joe S. Abuan , David A. Eldred , Hyeonkuk Jeong , Roberto Garcia, Jr. , Hsi-Jung Wu , Xiaosong Zhou , Elizabeth C. Cranfill , James O. Normile
IPC分类号： H04M11/00
CPC分类号： H04N7/141 , G06F3/04817 , G06F3/04842 , G06F3/04886 , G06F9/451 , G09G5/14 , H04M1/72583 , H04N5/2258 , H04N5/2624 , H04N5/272 , H04N7/147 , H04N7/15
摘要： Some embodiments provide a method for conducting a video conference between a first mobile device and a second device. The first mobile device includes first and second cameras. The method selects the first camera for capturing images. The method transmits images captured by the first camera to the second device. The method receives selections of the second camera for capturing images during the video conference. The method terminates the transmission of images captured by the first camera and transmits images captured by the second camera of the first mobile device to the second device during the video conference.

49. 发明申请

US20120328018A1 OPTIMIZED SEARCH FOR REFERENCE FRAMES IN PREDICTIVE VIDEO CODING SYSTEM 有权
标题翻译：在预测视频编码系统中优化参考框架的搜索
公开(公告)号：US20120328018A1
公开(公告)日：2012-12-27
申请号：US13397291
申请日：2012-02-15
申请人： Yao-Chung Lin , Xiaosong Zhou , Hsi-Jung Wu
发明人： Yao-Chung Lin , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/573 , H04N19/105 , H04N19/14 , H04N19/51
摘要： A system and method for efficiently performing motion estimation during temporal prediction for coding. When a new frame is presented for coding, an encoder may identify a limited number of pixel blocks within the input frame that are complex. The encoder may perform motion estimation searches to find reference frame(s) that are adequate prediction references for the complex pixel blocks. The encoder may search for prediction references for the remaining pixel blocks of the new frame, confining the search to the reference frame(s) that were selected as prediction references of the complex pixel blocks.
摘要翻译：一种用于在编码的时间预测期间有效执行运动估计的系统和方法。当提供用于编码的新帧时，编码器可以识别输入帧内有限数量的复杂的像素块。编码器可以执行运动估计搜索以找到作为复数像素块的足够的预测参考的参考帧。编码器可以搜索新帧的剩余像素块的预测参考，将搜索限制为被选为复数像素块的预测参考的参考帧。

50. 发明申请

US20120057073A1 Scene-Aware Automatic-Exposure Control 有权
标题翻译：场景感知自动曝光控制
公开(公告)号：US20120057073A1
公开(公告)日：2012-03-08
申请号：US13292353
申请日：2011-11-09
申请人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
发明人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
IPC分类号： H04N5/238
CPC分类号： H04N5/2351
摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.
摘要翻译：场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

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