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1. 发明授权

US06378099B1 Blind frame identification in a communication system 有权
标题翻译：通信系统中盲框识别
公开(公告)号：US06378099B1
公开(公告)日：2002-04-23
申请号：US09239561
申请日：1999-01-29
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H03M116
CPC分类号： H04L1/1829 , H04L1/1845
摘要： The present invention is a novel and improved method and apparatus for performing frame identification. In accordance with one embodiment of the invention, a received frame of data is processed by generating estimates of the received frame, measuring a correlation between said estimates and stored estimates of a previously improperly received frame, processing the received frame as a retransmitted frame when said correlation is greater than a first threshold, processing the received frame as a new frame when said correlation is less than a second threshold, wherein said second threshold is less than or equal to said first threshold.
摘要翻译：本发明是用于执行帧识别的新颖且改进的方法和装置。根据本发明的一个实施例，通过产生所接收的帧的估计来对接收的数据帧进行处理，测量所述估计与先前不正确接收的帧的存储的估计之间的相关性，当所述帧相关性大于第一阈值，当所述相关性小于第二阈值时，将接收到的帧处理为新帧，其中所述第二阈值小于或等于所述第一阈值。

2. 发明授权

US06522277B2 Circuit, system and method for performing dynamic element matching using bi-directional rotation within a data converter 有权
标题翻译：用于在数据转换器内使用双向旋转执行动态元件匹配的电路，系统和方法
公开(公告)号：US06522277B2
公开(公告)日：2003-02-18
申请号：US09778049
申请日：2001-02-05
申请人： Ichiro Fujimori , Armond Hairapetian , Lorenzo Longo
发明人： Ichiro Fujimori , Armond Hairapetian , Lorenzo Longo
IPC分类号： H03M116
CPC分类号： H03M1/0665 , H03M1/74 , H03M1/806 , H03M3/464 , H03M3/502
摘要： A circuit, system, and method are provided for imparting improved randomness into the selection of components or elements of a data converter, such as a D/A converter. The elements are intended to be of equal value, however, regardless of whether they are or not. A circuit is used to randomly select subsets of elements according to a bi-directional selection technique in order to effectively rending the elements or components of equal value. Associated with each component is a switch, and a subset of the plurality of components are correspondingly switched in successive order progressing in a first direction and, subsequently, in successive order progressing in a second direction opposite the first direction. Connecting components in a first direction from left-to-right follows by selecting components in a second direction from right-to-left, and then again selecting components in the first direction from left-to-right, and so forth. A pointer will note the starting element of odd values and another pointer will note the starting element of even values. The pointers are updated each time a corresponding odd code value and even code value is sent to the data converter.
摘要翻译：提供了一种电路，系统和方法，用于将改进的随机性提供给数据转换器（例如D / A转换器）的组件或元件的选择。然而，这些要素是有同等价值的，不管它们是否是。电路用于根据双向选择技术随机选择元素子集，以有效地渲染相同值的元素或元素。与每个部件相关联的是开关，并且多个部件的子集在第一方向上以连续顺序相继顺序地进行切换，并且随后以与第一方向相反的第二方向顺序地进行。从右到左依次从第二方向选择组件，然后从左到右依次选择第一方向的组件，从左到右依次连接组件。一个指针将记录奇数值的起始元素，另一个指针将记录偶数值的起始元素。每当相应的奇码值和偶数码值被发送到数据转换器时，指针被更新。

3. 发明授权

US06307497B1 Programmable gain ADC 有权
标题翻译：可编程增益ADC
公开(公告)号：US06307497B1
公开(公告)日：2001-10-23
申请号：US09638095
申请日：2000-08-11
申请人： Ka Y. Leung , Douglas S. Piasecki
发明人： Ka Y. Leung , Douglas S. Piasecki
IPC分类号： H03M116
CPC分类号： H03M1/129 , H03M1/46
摘要： A programmable gain circuit for analog-to-digital converter. A switched capacitor network capacitively couples an analog reference from a DAC to a comparator so that the sampled amplitude of the input analog signal can be compared with said analog reference. The ratio of the capacitance of the sampling capacitor to that of the switched capacitor network establishes an effective gain to the analog signal being converted.
摘要翻译：用于模数转换器的可编程增益电路。开关电容器网络将来自DAC的模拟基准电容耦合到比较器，使得可以将输入模拟信号的采样幅度与所述模拟参考值进行比较。采样电容器的电容与开关电容网络的电容之比建立了要转换的模拟信号的有效增益。

4. 发明授权

US06522273B1 Circuits systems and methods for power digital-to-analog converter protection 有权
标题翻译：用于电源数模转换器保护的电路系统和方法
公开(公告)号：US06522273B1
公开(公告)日：2003-02-18
申请号：US09825091
申请日：2001-04-02
申请人： Xiaofan Fei , Johann Guy Gaboriau , Jason Powell Rhode , John Laurence Melanson , Eric Walburger
发明人： Xiaofan Fei , Johann Guy Gaboriau , Jason Powell Rhode , John Laurence Melanson , Eric Walburger
IPC分类号： H03M116
CPC分类号： H03M1/0604 , H03M1/822 , H03M3/506 , H03M3/51
摘要： An apparatus and method for power digital-to-analog converter protection are implemented. An attenuation value is set in response to the value of the supply voltage. The attenuation value is provided to a gain control, along with the input signal. A gain, offset by the attenuation value, determines the gain-adjusted output signal of the gain control generated from the input signal.
摘要翻译：实现了功率数模转换器保护的装置和方法。响应于电源电压的值设置衰减值。衰减值与输入信号一起提供给增益控制。通过衰减值偏移的增益确定从输入信号产生的增益控制的增益调整输出信号。

5. 发明授权

US06288657B1 Encoding apparatus and method, decoding apparatus and method, and distribution media 失效
标题翻译：编码装置和方法，解码装置和方法以及分发媒体
公开(公告)号：US06288657B1
公开(公告)日：2001-09-11
申请号：US09409799
申请日：1999-09-30
申请人： Hiroyuki Ino
发明人： Hiroyuki Ino
IPC分类号： H03M116
CPC分类号： H03M5/06
摘要： The subtracter performs subtraction processing between a pointer outputted from the pointer register and code words candidate outputted from the code word count storing circuit, and in accordance with whether the result is negative or positive, determines the code words of input data words. Code word candidates stored in the code word count storing circuit are created according to a finite-state transition diagram stored in the state transition storing circuit. An encoder and a decoder are thus made compact and faster.
摘要翻译：减法器在从指针寄存器输出的指针和从代码字计数存储电路输出的代码字候选之间执行减法处理，并且根据结果是否定还是正的，确定输入数据字的代码字。根据存储在状态转换存储电路中的有限状态转移图来创建存储在代码字计数存储电路中的代码字候选。因此，编码器和解码器紧凑且更快。

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