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1. 发明授权

US5493581A Digital down converter and method 失效
标题翻译：数字下变频器和方法
公开(公告)号：US5493581A
公开(公告)日：1996-02-20
申请号：US930170
申请日：1992-08-14
申请人： William R. Young , David B. Chester
发明人： William R. Young , David B. Chester
IPC分类号： H03D7/16 , H03H17/06 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04 , H04B1/10
CPC分类号： H04B1/0021 , H03D7/165 , H03H17/06 , H04B1/0003 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04
摘要： A digital down converter for extracting a signal from a complex digital signal wherein the real and imaginary components of the complex digital signal are each modulated to shift the center frequency of the desired signal to zero frequency, decimated digitally to limit the bandwidth of each to the bandwidth of the desired signal and filtered to alter the shape thereof. The digital down converter includes a formatter for arranging the output of the desired signal in one of multiple output formats and a controller for programmably controlling the modulation, decimation and filtering and for selecting the desired output format.
摘要翻译：一种用于从复数数字信号中提取信号的数字下变频器，其中复数数字信号的实分量和虚分量均被调制，以将期望信号的中心频率移位到零频率，数字地抽取以限制每个信号的带宽所需信号的带宽并被滤波以改变其形状。数字下变频器包括一个格式化器，用于以多种输出格式之一布置所需信号的输出，以及用于可编程地控制调制，抽取和滤波以及选择所需输出格式的控制器。

2. 发明授权

US5276633A Sine/cosine generator and method 失效
标题翻译：正弦/余弦发生器和方法
公开(公告)号：US5276633A
公开(公告)日：1994-01-04
申请号：US930926
申请日：1992-08-14
申请人： James G. Fox , William R. Young , David B. Chester
发明人： James G. Fox , William R. Young , David B. Chester
IPC分类号： G06F1/035 , G06F7/52 , G06F1/02
CPC分类号： G06F7/5338 , G06F1/0353 , G06F1/0356 , G06F2101/04 , G06F7/49994
摘要： A sine/cosine generator with coarse and fine angles having compressed sine and cosine read only memories (ROMS) by use of symmetry of coarse angles about .pi./4 and, optionally, symmetry of fine angles about 0. The output of the ROMs directly feed multiplexers for utilization of the compressed storage. Addressing of complementary coarse angles is with one's complementing of the address and of complementary fine angles is with two's commplementing of the address. Fine sines and cosines are stored in recoded version for direct use in multipliers for computations using the sum of angles formulas.
摘要翻译：具有粗糙和精细角度的正弦/余弦发生器，其具有通过使用约（pi）/ 4的粗略角度的对称性以及可选地为约为0的细角度的对称性而具有压缩的正弦和余弦只读存储器（ROMS）。ROM 直接供应多路复用器以利用压缩存储。互补粗角度的寻址是用地址的补充，互补精细角度是两个地址的补充。精细的正弦和余弦存储在重新编码的版本中，用于使用角度公式的和进行计算的乘法器。

3. 再颁专利

USRE36388E Sine/cosine generator and method 失效
标题翻译：正弦/余弦发生器和方法
公开(公告)号：USRE36388E
公开(公告)日：1999-11-09
申请号：US400811
申请日：1995-03-08
申请人： James G. Fox , William R. Young , David B. Chester
发明人： James G. Fox , William R. Young , David B. Chester
IPC分类号： G06F1/035 , G06F7/52 , G06F1/02
CPC分类号： G06F7/5338 , G06F1/0353 , G06F1/0356 , G06F2101/04 , G06F7/49994
摘要： A sine/cosine generator with coarse and fine angles having compressed sine and cosine read only memories (ROMS) by use of symmetry of coarse angles about .pi./4 and, optionally, symmetry of fine angles about 0. The output of the ROMs directly feed multiplexers for utilization of the compressed storage. Addressing of complementary coarse angles is with one's complementing of the address and of complementary fine angles is with two's commplementing of the address. Fine sines and cosines are stored in recoded version for direct use in multipliers for computations using the sum of angles formulas.
摘要翻译：具有粗糙和精细角度的正弦/余弦发生器，通过使用大约π/ 4的粗略角度的对称性和可选的约为0的微小角度的对称性，具有压缩的正弦和余弦只读存储器（ROMS）。ROM的输出直接馈送用于压缩存储器的多路复用器。互补粗角度的寻址是用地址的补充，互补精细角度是两个地址的补充。精细的正弦和余弦存储在重新编码的版本中，用于使用角度公式的和进行计算的乘法器。

4. 发明授权

US5570392A Phase generator 失效
标题翻译：相位发生器
公开(公告)号：US5570392A
公开(公告)日：1996-10-29
申请号：US456859
申请日：1995-06-01
申请人： William R. Young , David B. Chester
发明人： William R. Young , David B. Chester
IPC分类号： H03D7/16 , H03H17/06 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04 , H04L27/20
CPC分类号： H04B1/0021 , H03D7/165 , H03H17/06 , H04B1/0003 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04
摘要： A digital down converter with a programmable mixing down frequency and a programmable extraction bandwidth uses a ROM based sin/cos generator plus a programmable high decimation filter followed by a gain compensating scaling multiplier and a fixed FIR filter. Output format options are also programmable, and programming commands are serially loaded into registers. Various components may be isolated for efficient testing and also subsystem operation.
摘要翻译：具有可编程混频低频和可编程提取带宽的数字下变频器使用基于ROM的sin / cos发生器加上可编程高抽取滤波器，随后是增益补偿缩放乘法器和固定FIR滤波器。输出格式选项也是可编程的，并且编程命令被串行加载到寄存器中。可以隔离各种组件用于有效测试和子系统操作。

5. 发明授权

US5617344A Fixed coefficient high decimation filter 失效
标题翻译：固定系数高抽取滤波器
公开(公告)号：US5617344A
公开(公告)日：1997-04-01
申请号：US457234
申请日：1995-06-01
申请人： William R. Young , David B. Chester
发明人： William R. Young , David B. Chester
IPC分类号： H03D7/16 , H03H17/06 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04 , G06F15/31
CPC分类号： H04B1/0021 , H03D7/165 , H03H17/06 , H04B1/0003 , H04B1/26 , H04B1/30 , H04J1/05 , H04Q11/04
摘要： A digital down converter with a programmable mixing down frequency and a programmable extraction bandwidth uses a ROM based sin/cos generator plus a programmable high decimation filter followed by a gain compensating scaling multiplier and a fixed FIR filter. Output format options are also programmable, and programming commands are serially loaded into registers. Various components may be isolated for efficient testing and also subsystem operation.
摘要翻译：具有可编程混频低频和可编程提取带宽的数字下变频器使用基于ROM的sin / cos发生器加上可编程高抽取滤波器，随后是增益补偿缩放乘法器和固定FIR滤波器。输出格式选项也是可编程的，并且编程命令被串行加载到寄存器中。可以隔离各种组件用于有效测试和子系统操作。

6. 发明授权

US5455782A Decimation filter and method 失效
标题翻译：抽取滤波器和方法
公开(公告)号：US5455782A
公开(公告)日：1995-10-03
申请号：US930169
申请日：1992-08-14
申请人： William R. Young , David B. Chester
发明人： William R. Young , David B. Chester
IPC分类号： H03H17/04 , G06F15/31
CPC分类号： H03H17/0671 , H03H17/0664
摘要： Programmable decimation filter made of integrators and combs with a shortened first integrator register and with a single subtractor plus memory for the combs subtractions. The comb subtractions are serially performed with read/write accesses to the memory. A shifter between the first and second integrator registers provides application to low decimation rates and the shortened register relates to device error rate at high decimation rates.
摘要翻译：可编程抽取滤波器由积分器和梳子组成，具有缩短的第一积分器寄存器，并具有单个减法器加上存储器用于梳子减法。梳状减法通过对存储器的读/写访问来连续执行。第一和第二积分器寄存器之间的移位器提供了对低抽取率的应用，并且缩短的寄存器与高抽取率相关的器件错误率。

7. 发明授权

US5450339A Noncanonic fully systolic LMS adaptive architecture 失效
标题翻译：非综合性收缩期LMS自适应架构
公开(公告)号：US5450339A
公开(公告)日：1995-09-12
申请号：US774620
申请日：1991-10-10
申请人： David B. Chester , William R. Young
发明人： David B. Chester , William R. Young
IPC分类号： G06F17/00 , H03H21/00 , G06F15/31 , G06F7/38
CPC分类号： H03H21/0012
摘要： A noncanonic fully systolic least mean squares adaptive filter architecture encompasses both tap weight updates and filtering and allows cascadability without penalties in speed or accuracy. A systolic tap weight update section is followed by a systolic FIR filter section. An array control and alignment section and a forward loading shift register provides a modified coefficient update circuit which facilitates the interface between the two sections. This architecture allows for efficient microprocessor control of the filter algorithm.
摘要翻译：非综合全收缩最小均方自适应滤波器架构包括抽头重量更新和滤波，并允许级联，而不会在速度或精度上受到惩罚。收缩压重量更新部分之后是收缩期FIR滤波器部分。阵列控制和对准部分和正向加载移位寄存器提供了一种改进的系数更新电路，其有利于两部分之间的接口。该架构允许对滤波器算法进行有效的微处理器控制。

8. 发明授权

US08848909B2 Permission-based TDMA chaotic communication systems 有权
标题翻译：基于权限的TDMA混沌通信系统
公开(公告)号：US08848909B2
公开(公告)日：2014-09-30
申请号：US12507512
申请日：2009-07-22
申请人： Alan J. Michaels , David B. Chester
发明人： Alan J. Michaels , David B. Chester
IPC分类号： H04L29/06 , H04K1/02
CPC分类号： H04K1/02 , H04K1/025
摘要： Systems (100) and methods for selectively controlling access to data streams communicated from a first communication device (FCD) using a timeslotted shared frequency spectrum and shared spreading codes. Protected data signals (1301, . . . , 130S) are modulated to form first modulated signals (1321, . . . , 132S). The first modulated signals are combined with first chaotic spreading codes to form digital chaotic signals. The digital chaotic signals are additively combined to form a protected data communication signal (PDCS). The PDCS (136) and a global data communication signal (GDCS) are time division multiplexed to form an output communication signal (OCS). The OCS (140) is transmitted from FCD (102) to a second communication device (SCD) over a communications channel. The SCD (106, 108, 110) is configured to recover (a) only global data from the OCS, or (b) global data and at least some protected data from the OCS.
摘要翻译：用于使用时隙共享频谱和共享扩展码来选择性地控制从第一通信设备（FCD）传送的数据流的访问的系统（100）和方法。受保护的数据信号（1301，...，130S）被调制以形成第一调制信号（1321，...，132S）。第一调制信号与第一混沌扩频码组合形成数字混沌信号。数字混沌信号被加法组合以形成受保护的数据通信信号（PDCS）。时分复用PDCS（136）和全局数据通信信号（GDCS）以形成输出通信信号（OCS）。 OCS（140）通过通信信道从FCD（102）发送到第二通信设备（SCD）。 SCD（106,108,110）被配置为仅恢复（a）来自OCS的全局数据，或（b）全局数据和至少一些来自OCS的受保护数据。

9. 发明授权

US08457077B2 Communications system employing orthogonal chaotic spreading codes 有权
标题翻译：采用正交混沌扩频码的通信系统
公开(公告)号：US08457077B2
公开(公告)日：2013-06-04
申请号：US12396828
申请日：2009-03-03
申请人： Alan J. Michaels , David B. Chester
发明人： Alan J. Michaels , David B. Chester
IPC分类号： H04B7/216
CPC分类号： H04L9/001 , H04J13/0018 , H04J13/0074 , H04L9/12 , H04L2209/20
摘要： Systems and methods for code-division multiplex communications. The methods involve forming orthogonal or statistically orthogonal chaotic spreading sequences (CSC1,1, CSCD,1), each comprising a different chaotic sequence. The methods also involve generating an offset chaotic spreading sequence (CSC1,2, CSC1,3, . . . , CSC1,K(1), CSCD,2, . . . , CSCD,K(D)) which is the same as a first one of the orthogonal or statistically orthogonal chaotic spreading sequences, but temporally offset. Spread spectrum communications signals (SSCs) are each respectively generated using one of the orthogonal or statistically orthogonal chaotic spreading sequences. Another SSC is generated using the offset chaotic spreading sequence. The SSCs are concurrently transmitted over a common RF frequency band.
摘要翻译：用于码分多址通信的系统和方法。该方法包括形成正交或统计正交的混沌扩展序列（CSC1,1，CSCD，1），每个包含不同的混沌序列。该方法还涉及产生与...相同的偏移混沌扩展序列（CSC1,2，CSC1,3，...，CSC1，K（1），CSCD，2，...，CSCD，K（D）正交或统计正交混沌扩展序列中的第一个，但是在时间上偏移。扩频通信信号（SSC）分别使用正交或统计正交混沌扩频序列之一分别生成。使用偏移混沌扩展序列生成另一个SSC。 SSCs通过公共RF频带同时发送。

10. 发明授权

US08374217B2 Permission-based multiple access communications systems 有权
公开(公告)号：US08374217B2
公开(公告)日：2013-02-12
申请号：US12496170
申请日：2009-07-01
申请人： Alan J. Michaels , David B. Chester
发明人： Alan J. Michaels , David B. Chester
IPC分类号： H04B1/00
摘要： Systems (100) and methods (400) for selectively controlling access to multiple data streams which are communicated using a shared frequency spectrum and shared spreading codes. The methods involve generating a first product signal (FPS) by spreading first symbols of a first amplitude modulated (AM) signal using a first spreading code (SC). The methods also involve generating a second product signal (SPS) by spreading second symbols of a complimentary AM signal using a second SC. The FPS (124) and SPS 126 are combined to form a protected data communication signal (PDCS) including first data recoverable by a receiver (106). A global data communication signal (GDCS) is combined with PDCS (128) to form an output signal (140) having a spread spectrum format. The GDCS is generated using a digital modulation process and includes second data recoverable by a plurality of receivers (106, 108).

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