公开(公告)号：US20130057639A1

公开(公告)日：2013-03-07

申请号：US13407732

申请日：2012-02-28

申请人： John D. Ralston

发明人： John D. Ralston

IPC分类号： H04N7/14

CPC分类号： H04N7/152 ,  H04L12/1827 ,  H04L65/103 ,  H04L65/604 ,  H04L65/80 ,  H04N21/2402 ,  H04N21/2404 ,  H04N21/2405 ,  H04N21/4728 ,  H04N21/64707

摘要： Systems and methods for video communication services are presented herein. In particular, systems and methods in which multiple participants can simultaneously create and share video in real-time are presented herein. Other systems and methods are also presented herein.

公开(公告)号：US08279098B2

公开(公告)日：2012-10-02

申请号：US12422157

申请日：2009-04-10

申请人： Steven E. Saunders ,  William C. Lynch ,  Krasimir D. Kolarov

发明人： Steven E. Saunders ,  William C. Lynch ,  Krasimir D. Kolarov

IPC分类号： H03M3/00

CPC分类号： H04N19/1883 ,  H04N19/115 ,  H04N19/124 ,  H04N19/13 ,  H04N19/146 ,  H04N19/61 ,  H04N19/63

摘要： A system, method and computer program product provide finer rate control in data compression by processing a data stream through a plurality of parallel subbands, wherein a first subband processes the data differently than a second subband. Separate shift quantization parameters for each separate run-of-zeros compressed storage area or pile can be provided, instead of a single common shift parameter for every coefficient as in the prior art. The parameter value for each such area or pile can be recorded in the compressed output file. The separate shift quantization parameters can also be adjusted dynamically as data is being compressed.

摘要翻译： 系统，方法和计算机程序产品通过处理通过多个并行子带的数据流来提供数据压缩中的更精细的速率控制，其中第一子带处理不同于第二子带的数据。 可以提供针对每个单独的零级压缩存储区域或堆的单独的移位量化参数，而不是如现有技术中的每个系数的单个公共移位参数。 每个这样的区域或桩的参数值可以记录在压缩的输出文件中。 单独的移位量化参数也可以随着数据被压缩而动态地调整。

公开(公告)号：US20120016926A1

公开(公告)日：2012-01-19

申请号：US12863118

申请日：2010-07-15

申请人： James Toga ,  Siddhartha Gupta ,  Kenneth Cox ,  Rafal K. Boni

发明人： James Toga ,  Siddhartha Gupta ,  Kenneth Cox ,  Rafal K. Boni

IPC分类号： G06F15/16

CPC分类号： H04L65/403 ,  H04L12/00 ,  H04L67/38

摘要： Scalable techniques for rendering emissions represented using segments of streaming data, the emissions being potentially perceivable from many points of perception and the emissions and the points of perception having relationships that vary in real time. The techniques filter the segments by determining for a time slice whether a given emission is perceptible to a given point of perception. If it is not, the segments of streaming data representing the emission are not used to render the emissions as perceived from the given point of perception. The techniques are used in networked virtual environments to render audio emissions at clients in a networked virtual reality system. With audio emissions, one determinant of whether a given emission is perceivable at a given point of perception is whether psychoacoustic properties of other emissions mask the given emission. The segments representing the streaming data also contain metadata which is used both in the filtering and in rendering the streaming data for a point of perception at which the emission is perceived.

摘要翻译： 用于渲染使用流数据片段表示的排放的可扩展技术，该排放量可以从许多观察点和排放以及具有实时变化关系的感知点感知到。 该技术通过确定时间片来过滤分段，给定的发射是否可以被感知到给定的感知点。 如果不是，表示发射的流数据的段不用于从给定的感知点感知到排放。 这些技术用于联网虚拟环境中，以在网络虚拟现实系统中的客户端上呈现音频排放。 在音频排放方面，在给定的感知点处，给定排放是​​否可感知的一个决定因素是其他排放物的心理声学特性是否掩盖了给定的排放。 表示流数据的段也包含元数据，这些元数据既用于过滤，也用于呈现感知发射点的流数据。