专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20080034027A1 Method for reducing round-off error in fixed-point arithmetic 审中-公开
标题翻译：减少定点运算中的舍入误差的方法
公开(公告)号：US20080034027A1
公开(公告)日：2008-02-07
申请号：US11498319
申请日：2006-08-01
申请人： Linfeng Guo , Yang Li , Mark Sydorenko , Jun Tian , Hua Zheng
发明人： Linfeng Guo , Yang Li , Mark Sydorenko , Jun Tian , Hua Zheng
IPC分类号： G06F7/38
CPC分类号： G06F7/49942 , G06F7/4991 , G06F7/49936 , G06F7/523
摘要： Round-off error in fixed-point arithmetic is minimized by changing the magnitudes of two multipliers simultaneously. The dynamic range of an intermediate output is thus maximized to increase computation precision. A much smaller round-off error, caused by fixed-point arithmetic, thus results.
摘要翻译：通过同时改变两个乘法器的幅度来最小化定点运算中的舍入误差。因此，中间输出的动态范围被最大化以增加计算精度。因此，由定点算术引起的更小的舍入误差就会导致。

2. 发明申请

US20080034026A1 Method for improving computation precision in fast Fourier transform 审中-公开
标题翻译：提高快速傅里叶变换计算精度的方法
公开(公告)号：US20080034026A1
公开(公告)日：2008-02-07
申请号：US11498317
申请日：2006-08-01
申请人： Linfeng Guo , Yang Li , Mark Sydorenko , Jun Tian , Hua Zheng
发明人： Linfeng Guo , Yang Li , Mark Sydorenko , Jun Tian , Hua Zheng
IPC分类号： G06F17/14 , G06F17/10 , G06F17/40
CPC分类号： G06F17/142
摘要： A method for improving precision in FFT calculations. For each iteration in an FFT implementation, a constant normalization multiplier is inserted such that the dynamic ranges of the input and output are the same. The final FFT output is multiplied by a constant normalization factor given by the number of iterations and the constant normalization multiplier.
摘要翻译：一种提高FFT计算精度的方法。对于FFT实现中的每次迭代，插入常数归一化乘数，使得输入和输出的动态范围相同。最终FFT输出乘以由迭代次数和常数归一化乘数给出的常数归一化因子。

3. 发明申请

US20080294446A1 Layer based scalable multimedia datastream compression 审中-公开
标题翻译：基于层的可扩展多媒体数据流压缩
公开(公告)号：US20080294446A1
公开(公告)日：2008-11-27
申请号：US11805245
申请日：2007-05-22
申请人： Linfeng Guo , Hua Zheng , Mark Sydorenko , Yang Li
发明人： Linfeng Guo , Hua Zheng , Mark Sydorenko , Yang Li
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/0017 , G10L19/0204 , G10L19/24
摘要： Source signals, such as audio and/or video data, are encoded into multiple, consecutive frequency bands. These bands are referred to as coding layers. Rather than performing complex bit-slice operations, a disclosed technique enables an agile and simplified response to transmission channel throughput variations. Specifically, if it becomes necessary to restrict the rate of data transmission to avoid receiver buffer underflow resulting from transmission channel degradation, layers from the transmitted signal are omitted, beginning with the highest frequency bands. Efficient and agile bit rate scalability during data streaming through wired or wireless networks and during local playback is thus enabled.
摘要翻译：诸如音频和/或视频数据的源信号被编码成多个连续的频带。这些频带被称为编码层。所公开的技术不是执行复杂的位片操作，而是能够对传输信道吞吐量变化进行敏捷和简化的响应。具体地，如果需要限制数据传输速率以避免由于传输信道恶化导致的接收机缓冲器下溢，则从最高频带开始，从发送信号中省去层。因此，通过有线或无线网络和本地播放期间的数据流传输期间，高效且敏捷的比特率可扩展性得以实现。

4. 发明申请

US20070192086A1 Perceptual quality based automatic parameter selection for data compression 审中-公开
标题翻译：基于感知质量的数据压缩自动参数选择
公开(公告)号：US20070192086A1
公开(公告)日：2007-08-16
申请号：US11352952
申请日：2006-02-13
申请人： Linfeng Guo , Yang Li , Mark Sydorenko , Hua Zheng
发明人： Linfeng Guo , Yang Li , Mark Sydorenko , Hua Zheng
IPC分类号： G10L19/00
CPC分类号： G10L19/16 , G10L25/30
摘要： The automatic and optimal selection of coding parameter values according to analyses of coding trials is disclosed. The Neural Encoding Model (NEM) provides a method for providing a quantitative measure of the likelihood that a human observer can distinguish an original sensory signal from an approximation thereof, thus providing a metric by which the effect of various coding parameters may be analyzed and optimized. Optimal coding parameters can be defined for an entire data set, such as a digitized audio file, or for discrete portions of the data set. A trial coded data set or portion thereof is analyzed to determining if certain coding parameters have been assigned optimal values. If not, parameter manipulation is performed in an intelligent order and the objective analysis is repeated until predetermined objective perceptual distance criteria are achieved.
摘要翻译：公开了根据编码试验分析的编码参数值的自动优化选择。神经编码模型（NEM）提供了一种方法，用于提供对人类观察者可以区分原始感觉信号与其近似的可能性的定量测量，从而提供可以分析和优化各种编码参数的效果的度量。可以为整个数据集（例如数字化音频文件）或数据集的离散部分定义最佳编码参数。分析试验编码数据集或其部分，以确定某些编码参数是否已被分配最佳值。如果不是，则以智能顺序执行参数操作，并且重复客观分析，直到达到预定的客观感知距离标准。

5. 发明申请

US20090125636A1 Payload allocation methods for scalable multimedia servers 审中-公开
标题翻译：可扩展多媒体服务器的有效负载分配方法
公开(公告)号：US20090125636A1
公开(公告)日：2009-05-14
申请号：US11985054
申请日：2007-11-13
申请人： Qiong Li , Linfeng Guo , Michael David Vernick , Mark Sydorenko
发明人： Qiong Li , Linfeng Guo , Michael David Vernick , Mark Sydorenko
IPC分类号： G06F15/16
CPC分类号： H04L65/4092 , H04L65/602 , H04L65/608
摘要： The dynamic streaming of multimedia data between a data server and one or more clients is disclosed. Dynamic streaming enables the rapid and accurate characterization of the end-to-end path conditions in a server-client streaming session, as well as the rapid and intelligent response to those conditions in terms of source compression prior to data packetization. The most significant bits of an original bit stream can be adaptively and immediately selected in response to network conditions. The adaptive selection process is informed by feedback from the client receiver indicative of a time-to-transit the network from server to client. A control protocol and server architecture, including file format, data structure, data processing procedures, cache control mechanisms, and adaptation algorithms useful in implementing dynamic streaming are also disclosed.
摘要翻译：公开了数据服务器与一个或多个客户端之间的多媒体数据的动态流传输。动态流可以快速准确地表征服务器 - 客户端流媒体会话中的端到端路径条件，以及在数据分组化之前对源压缩的这些条件的快速和智能响应。可以根据网络条件自适应地立即选择原始位流的最高有效位。自适应选择过程通过来自客户端接收器的反馈通知，指示网络从服务器到客户端的转发时间。还公开了一种控制协议和服务器架构，包括文件格式，数据结构，数据处理过程，高速缓存控制机制和适用于实现动态流传输的适配算法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式