公开(公告)号：US20130060829A1

公开(公告)日：2013-03-07

申请号：US13223974

申请日：2011-09-01

申请人： Christopher L. Spencer ,  Yun-Xiao Zou ,  Brian L. Sumner

发明人： Christopher L. Spencer ,  Yun-Xiao Zou ,  Brian L. Sumner

IPC分类号： G06F7/38

CPC分类号： G06F7/548

摘要： A method and apparatus for additive range reduction are disclosed. A constant may be pre-stored in a look-up table (LUT), and at least one section of the constant may be retrieved from the LUT for generating a product of an input argument and the constant such that a precision of the product may be controlled in any granularity. For a trigonometric function, 2/π is stored in the LUT, and at least one section of 2/π may be retrieved from the LUT. The argument is multiplied with the retrieved sections of 2/π. The retrieved sections are determined to correctly generate the two least significant bits (LSBs) of an integer portion and a scalable number of most significant bits of the multiplication result. An output of the trigonometric function is generated for the argument with a fractional portion of the multiplication result based on two LSBs of the integer portion of the multiplication result.

摘要翻译： 公开了一种用于附加范围缩小的方法和装置。 常数可以预先存储在查找表（LUT）中，并且可以从LUT中检索常数的至少一个部分，以生成输入参数和常数的乘积，使得产品的精度可以 以任何粒度进行控制。 对于三角函数，2 /＆pgr; 存储在LUT中，并且至少有一个2 / pgr; 可以从LUT检索。 参数乘以2 /＆pgr的检索部分。 确定所检索的部分以正确地生成乘法结果的整数部分的两个最低有效位（LSB）和最高有效位的可缩放数目。 根据乘法结果的整数部分的两个LSB，对于具有乘法结果的小数部分的参数，生成三角函数的输出。

公开(公告)号：US20060072426A1

公开(公告)日：2006-04-06

申请号：US10945554

申请日：2004-09-20

申请人： Yu Lin ,  Xiao Zou

发明人： Yu Lin ,  Xiao Zou

IPC分类号： G11B7/00

CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1403

摘要： A method and a signal processing unit are proposed, for converting an asynchronous discrete-time signal to a synchronous discrete-time signal by performing sector-based timing recovery. The timing recovery includes aligning an initial portion of the asynchronous discrete-time signal to a first portion of a predetermined signal, and a later portion of the asynchronous discrete-time signal to a second portion of a predetermined signal. Optionally, the method and signal processing unit further perform sector based gain control, and sector-based removal of any dc component.

公开(公告)号：US20130031643A1

公开(公告)日：2013-01-31

申请号：US13406237

申请日：2012-02-27

申请人： Lawrence S. Rogel ,  John M. Ossenmacher ,  Micha Moffie ,  Amihai Viks ,  Xiao Zou

发明人： Lawrence S. Rogel ,  John M. Ossenmacher ,  Micha Moffie ,  Amihai Viks ,  Xiao Zou

IPC分类号： G06F21/24

CPC分类号： G06F21/10 ,  G06F21/604 ,  G06F21/6245 ,  G06F2221/2107 ,  H04L63/10 ,  H04L63/123 ,  H04L67/10 ,  H04L2463/101 ,  H04N21/4627

摘要： The invention provide systems and methods for management of digital media objects, comprising first and second client digital data processors (e.g., personal (or private) computers, laptops, dedicated music devices, electronic book readers, and so forth) that are in communications coupling with one or more stores (e.g., dedicated disk drives, flash drives, cloud storage, etc.). At least one digital media object (DMO) or copy thereof is stored in one or more of those stores and is accessible by at least one of the first and second client digital data processors.

摘要翻译： 本发明提供了用于管理数字媒体对象的系统和方法，包括处于通信耦合中的第一和第二客户端数字数据处理器（例如，个人（或私人）计算机，笔记本电脑，专用音乐设备，电子书籍阅读器等） 具有一个或多个商店（例如，专用磁盘驱动器，闪存驱动器，云存储等）。 至少一个数字媒体对象（DMO）或其副本被存储在这些存储中的一个或多个中，并且可由第一和第二客户数字数据处理器中的至少一个访问。

公开(公告)号：US09563402B2

公开(公告)日：2017-02-07

申请号：US13223974

申请日：2011-09-01

申请人： Christopher L. Spencer ,  Yun-Xiao Zou ,  Brian L. Sumner

发明人： Christopher L. Spencer ,  Yun-Xiao Zou ,  Brian L. Sumner

IPC分类号： G06F7/548

CPC分类号： G06F7/548

摘要： A method and apparatus for additive range reduction are disclosed. A constant may be pre-stored in a look-up table (LUT), and at least one section of the constant may be retrieved from the LUT for generating a product of an input argument and the constant such that a precision of the product may be controlled in any granularity. For a trigonometric function, 2/π is stored in the LUT, and at least one section of 2/π may be retrieved from the LUT. The argument is multiplied with the retrieved sections of 2/π. The retrieved sections are determined to correctly generate the two least significant bits (LSBs) of an integer portion and a scalable number of most significant bits of the multiplication result. An output of the trigonometric function is generated for the argument with a fractional portion of the multiplication result based on two LSBs of the integer portion of the multiplication result.

摘要翻译： 公开了一种用于附加范围缩小的方法和装置。 常数可以预先存储在查找表（LUT）中，并且可以从LUT中检索常数的至少一个部分，以生成输入参数和常数的乘积，使得产品的精度可以 以任何粒度进行控制。 对于三角函数，2 /π存储在LUT中，并且可以从LUT检索至少一个2 /π的部分。 该参数与2 /π的检索部分相乘。 确定所检索的部分以正确地生成乘法结果的整数部分的两个最低有效位（LSB）和最高有效位的可缩放数目。 根据乘法结果的整数部分的两个LSB，对于具有乘法结果的小数部分的参数，生成三角函数的输出。

公开(公告)号：US09021608B2

公开(公告)日：2015-04-28

申请号：US13406237

申请日：2012-02-27

申请人： Lawrence S. Rogel ,  John M. Ossenmacher ,  Micha Moffie ,  Amihai Viks ,  Xiao Zou

发明人： Lawrence S. Rogel ,  John M. Ossenmacher ,  Micha Moffie ,  Amihai Viks ,  Xiao Zou

IPC分类号： G06F7/04 ,  H04L29/06 ,  G06F21/62 ,  G06F21/10 ,  G06F21/60 ,  H04N21/4627

CPC分类号： G06F21/10 ,  G06F21/604 ,  G06F21/6245 ,  G06F2221/2107 ,  H04L63/10 ,  H04L63/123 ,  H04L67/10 ,  H04L2463/101 ,  H04N21/4627

摘要： The invention provide systems and methods for management of digital media objects, comprising first and second client digital data processors (e.g., personal (or private) computers, laptops, dedicated music devices, electronic book readers, and so forth) that are in communications coupling with one or more stores (e.g., dedicated disk drives, flash drives, cloud storage, etc.). At least one digital media object (DMO) or copy thereof is stored in one or more of those stores and is accessible by at least one of the first and second client digital data processors.

摘要翻译： 本发明提供了用于管理数字媒体对象的系统和方法，包括处于通信耦合中的第一和第二客户端数字数据处理器（例如，个人（或私人）计算机，笔记本电脑，专用音乐设备，电子书籍阅读器等） 具有一个或多个商店（例如，专用磁盘驱动器，闪存驱动器，云存储等）。 至少一个数字媒体对象（DMO）或其副本被存储在这些存储中的一个或多个中，并且可由第一和第二客户数字数据处理器中的至少一个访问。