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1. 发明授权

US4893339A Secure communication system 失效
标题翻译：安全通信系统
公开(公告)号：US4893339A
公开(公告)日：1990-01-09
申请号：US903360
申请日：1986-09-30
申请人： Michael W. Bright , Eric F. Ziolko , Alan L. Wilson , Michelle M. Bray , Harry A. Hennen , David L. Weiss
发明人： Michael W. Bright , Eric F. Ziolko , Alan L. Wilson , Michelle M. Bray , Harry A. Hennen , David L. Weiss
IPC分类号： H04K1/02 , H04L9/12 , H04K1/00
CPC分类号： H04L9/12 , H04K1/02 , H04L9/0656 , H04L2209/34
摘要： Disclosed is a synchronous secure communication system wherein an information signal is encrypted in an encryption means. The encrypted signal is compressed to allow the insertion of a synchronization signal, and the combined signals are transmitted. At the receiver, the synchronization signal is extracted and used to synchronize the receiver to the incoming data stream thereby improving receiver sensitivity and range.
摘要翻译：公开了一种同步安全通信系统，其中信息信号在加密装置中被加密。加密信号被压缩以允许插入同步信号，并且传输组合的信号。在接收机处，同步信号被提取并用于使接收机与输入数据流同步，从而提高接收机的灵敏度和范围。

2. 发明授权

US4893308A Method and apparatus for time companding a digital voice signal 失效
标题翻译：用于时间压缩数字语音信号的方法和装置
公开(公告)号：US4893308A
公开(公告)日：1990-01-09
申请号：US903315
申请日：1986-09-03
申请人： Alan L. Wilson , Michael W. Bright , Michelle M. Bray , Eric F. Ziolko , David L. Weiss
发明人： Alan L. Wilson , Michael W. Bright , Michelle M. Bray , Eric F. Ziolko , David L. Weiss
IPC分类号： H04B1/66 , H04L7/04
CPC分类号： H04L7/04 , H04B1/662
摘要： Disclosed is a method and apparatus for time companding a digital voice signal wherein, single bits are periodically removed from the digital voice signal, which is then compressed thereby forming a contiguous area of removed bits. A synchronization signal is inserted into this area and the combined signal is transmitted. At the receiver, the synchronization signal is extracted and is used to synchronize the receiver. The digital voice signal is then expanded and the removed bits are predicted and replaced.
摘要翻译：公开了一种用于时间压缩数字语音信号的方法和装置，其中从数字语音信号周期性地移除单个比特，然后将其压缩，从而形成连续的去除比特的区域。将同步信号插入该区域，并传送组合信号。在接收机处，提取同步信号并用于同步接收机。然后数字语音信号被扩展，并且去除的位被预测和替换。

3. 发明授权

US4667327A Error corrector for a linear feedback shift register sequence 失效
标题翻译：线性反馈移位寄存器序列的误差校正器
公开(公告)号：US4667327A
公开(公告)日：1987-05-19
申请号：US719385
申请日：1985-04-02
申请人： Michael W. Bright , Eric F. Ziolko , Alan L. Wilson
发明人： Michael W. Bright , Eric F. Ziolko , Alan L. Wilson
IPC分类号： G01R31/3185 , G06F11/18 , H03M13/23 , H03M13/43 , G06F11/10
CPC分类号： G06F11/183 , G01R31/31853 , H03M13/23 , H03M13/43
摘要： Disclosed is an error corrector for a linear feedback shift register sequence employing an open loop linear feedback shift register (LFSR) having selected bits "tapped" and combined to form a feedback signal. The taps implement an orthogonal convolutional code that is inherently redundant, therefore, the transmission of parity bits is not required. The feedback signal is combined with the received synchronization signal to form an error estimate that is temporarily stored in a syndrome register. By majority voting a selected outputs of the syndrome register a reliable determination of a received error can be made. Once an error determination is made, a correction signal is generated to correct the bit in error thereby providing a high probability of initiating and maintaining synchronization.
摘要翻译：公开了一种使用具有选择的位“抽头”并组合以形成反馈信号的开环线性反馈移位寄存器（LFSR）的线性反馈移位寄存器序列的误差校正器。抽头实现固有冗余的正交卷积码，因此不需要奇偶校验位的传输。反馈信号与接收的同步信号组合，形成临时存储在校正子寄存器中的误差估计。通过多数表决选择的校正子寄存器的输出，可以确定接收到的错误。一旦作出错误确定，就产生校正信号以纠正错误的位，从而提供启动和维持同步的高概率。

4. 发明授权

US4747105A Linear feedback sequence detection with error correction 失效
标题翻译：线性反馈序列检测与纠错
公开(公告)号：US4747105A
公开(公告)日：1988-05-24
申请号：US903335
申请日：1986-09-03
申请人： Alan L. Wilson , Michael W. Bright , Eric F. Ziolko
发明人： Alan L. Wilson , Michael W. Bright , Eric F. Ziolko
IPC分类号： H03M13/33 , H04L7/04 , G06F11/10
CPC分类号： H03M13/33 , H04L7/043 , H04L7/048
摘要： A detector locates a shift register sequence within a digital data stream by correlating the data stream with a sequence generated locally from a portion of the data stream. Error correction circuitry estimates errors that may have corrupted the sequence during transmission across a noisy channel and corrects them to the extent possible. The data stream and local sequence are correlated during an interval that is shifted either ahead or behind the portion of the error-corrected data stream used to initialize the local sequence generator, thereby avoiding the region during which short-term correlation between the data stream and local sequence would otherwise cause false indications of detection when only noise or random data is being received.
摘要翻译：检测器通过将数据流与从数据流的一部分本地生成的序列相关联来定位数字数据流内的移位寄存器序列。误差校正电路估计可能在穿过嘈杂信道的传输期间损坏序列的错误，并尽可能地校正它们。数据流和本地序列在被用于初始化本地序列发生器的纠错数据流的部分之前或之后移动的间隔期间相关，从而避免数据流和数据流之间的短期相关性否则当仅接收到噪声或随机数据时，本地序列将导致错误的检测指示。

5. 发明授权

US5729559A Method and apparatus for correcting errors using multiple estimates 失效
标题翻译：使用多个估计来校正错误的方法和装置
公开(公告)号：US5729559A
公开(公告)日：1998-03-17
申请号：US411243
申请日：1995-03-27
申请人： Michael W. Bright , Eric F. Ziolko
发明人： Michael W. Bright , Eric F. Ziolko
IPC分类号： H03M13/23 , H03M13/43 , H03M13/12
CPC分类号： H03M13/43 , H03M13/23
摘要： An apparatus for and method of correcting errors in a received signal comprised of a rate-one orthogonal convolutional code generated by an LFSR involved feeding (403) a received signal into a multiple-stage shift register (201). Estimates of one of the stages of the shift register are performed by estimators (203, 205, 207, 209, 211, 213, and 215) and are based on the outputs of several of the other stages of the shift register (201). These estimates are combined on a bit-by-bit basis to provide a corrected received signal, which is used as the output of the shift register (201).
摘要翻译：一种用于校正由LFSR生成的速率一正交卷积码的接收信号中的误差的装置和方法，包括将接收的信号馈送（403）到多级移位寄存器（201）中。估计器（203,205,207,209,211,213和215）执行移位寄存器的一个级的估计，并且基于移位寄存器（201）的其他几个级的输出。这些估计被逐位地组合以提供用作移位寄存器（201）的输出的校正接收信号。

6. 发明授权

US4406010A Receiver for CVSD modulation with integral filtering 失效
标题翻译：接收器用于具有积分滤波的CVSD调制
公开(公告)号：US4406010A
公开(公告)日：1983-09-20
申请号：US221189
申请日：1980-12-30
申请人： David L. Weiss , Eric F. Ziolko , Tim A. Williams
发明人： David L. Weiss , Eric F. Ziolko , Tim A. Williams
IPC分类号： H03K7/02 , H03M3/02 , H03K13/22
CPC分类号： H03M3/024
摘要： CVSD modulation is detected by applying a digital signal containing CVSD information to a digital filter that is in the CVSD loop that includes a syllabic filter and a rule circuit. The digital filter includes voltage-operated switches that switch one of two voltages to a resistor network and thereby combine multiplication and digital filtering. The output of the digital filter is the output of the circuit.
摘要翻译：通过将包含CVSD信息的数字信号应用于包括音节滤波器和规则电路的CVSD循环中的数字滤波器来检测CVSD调制。数字滤波器包括电压操作开关，其将两个电压中的一个切换到电阻器网络，从而组合乘法和数字滤波。数字滤波器的输出是电路的输出。

7. 发明授权

US4914697A Cryptographic method and apparatus with electronically redefinable algorithm 失效
标题翻译：具有电子重定义算法的加密方法和装置
公开(公告)号：US4914697A
公开(公告)日：1990-04-03
申请号：US150876
申请日：1988-02-01
申请人： Ezzat A. Dabbish , John P. Byrns , Michael J. McClaughry , Larry C. Puhl , Daniel P. Brown , Eric F. Ziolko , Michael W. Bright
发明人： Ezzat A. Dabbish , John P. Byrns , Michael J. McClaughry , Larry C. Puhl , Daniel P. Brown , Eric F. Ziolko , Michael W. Bright
IPC分类号： H04L9/10 , G06F21/00 , H04K1/00 , H04L9/06 , H04L9/14
CPC分类号： G06F21/72 , H04K1/00 , H04L9/06 , H04L2209/26
摘要： A cryptographic apparatus for encrypting and decrypting digital words includes a mechanism that permits a cipher algorithm to be electronically stored after the manufacture of the apparatus. The storing mechanism includes at least one electrically erasable, programmable gate array containing a portion of the cipher algorithm and at least one random access memory device coupled to the array for storing digital data generated by the algorithm. A mechanism which is coupled to the gate array and memory device controls the execution of the algorithm for each digital word thereby decrypting encrypted digital words and encrypting non-encrypted digital words.
摘要翻译：用于对数字字进行加密和解密的加密装置包括允许在制造装置之后电子地存储加密算法的机制。存储机构包括至少一个包含密码算法的一部分的电可擦除可编程门阵列，以及耦合到该阵列的至少一个随机存取存储器件，用于存储该算法生成的数字数据。耦合到门阵列和存储器装置的机构控制每个数字字的算法的执行，从而解密加密的数字字和加密未加密的数字字。

8. 发明授权

US5377229A Multi-modulation scheme compatible radio 失效
标题翻译：多调制方案兼容无线电
公开(公告)号：US5377229A
公开(公告)日：1994-12-27
申请号：US629931
申请日：1990-12-19
申请人： Alan L. Wilson , Mark C. Cudak , Bradley M. Hiben , Eric F. Ziolko , Steven C. Jasper
发明人： Alan L. Wilson , Mark C. Cudak , Bradley M. Hiben , Eric F. Ziolko , Steven C. Jasper
IPC分类号： H04L27/10 , H04L27/00 , H04L27/18
CPC分类号： H04L27/0008
摘要： A transceiver compatible with both wide channel constant envelope 4 level FSK FM modulation and narrow channel .pi./4 differential QPSK linear modulation allows compatible interaction between modified constant envelope and non-constant envelope transmitters. All Nyquist filtering occurs in the transmitters, and none in the receiver.
摘要翻译：兼容宽通道恒定包络4级FSK FM调制和窄通道pi / 4差分QPSK线性调制的收发器允许修改的恒定包络和非恒定包络发射机之间的兼容交互。所有奈奎斯特滤波发生在发射机中，接收机中不发生。

9. 发明授权

US4882751A Secure trunked communications system 失效
标题翻译：安全集群通信系统
公开(公告)号：US4882751A
公开(公告)日：1989-11-21
申请号：US926311
申请日：1986-10-31
申请人： Michael D. Kotzin , Kenneth J. Zdunek , Eric F. Ziolko
发明人： Michael D. Kotzin , Kenneth J. Zdunek , Eric F. Ziolko
IPC分类号： H04K1/00
CPC分类号： H04K1/00
摘要： A trunked communications system that accommodates encrypted secure communications. The system uses both non-encrypted message detectors and encrypted message detectors to assure that the trunked central control unit receives the signals it must receive in order to properly allocate and maintain channel assignments.
摘要翻译：一种集群通信系统，适用于加密的安全通信。系统使用非加密消息检测器和加密消息检测器来确保中继中央控制单元接收它必须接收的信号，以便正确地分配和维护信道分配。

10. 发明授权

US4827514A Method and apparatus to detect and recover a pseudo-random sequence 失效
标题翻译：检测和恢复伪随机序列的方法和装置
公开(公告)号：US4827514A
公开(公告)日：1989-05-02
申请号：US163684
申请日：1988-03-03
申请人： Eric F. Ziolko , Harry A. Hennen
发明人： Eric F. Ziolko , Harry A. Hennen
IPC分类号： H04L9/12 , H04K1/04
CPC分类号： H04L9/12 , H04L9/0656
摘要： A synchronization detector is disclosed wherein a portion of the received data stream is parallel loaded into a sequence generating means. The sequence generating means provides a local synchronization sequence that is compared to the transmitted synchronization signal, and an error count is tallied. If the number of errors occurring in a predetermined "window" is below a predetermined threshold, a synchronization detect signal is asserted. However, if the errors in a predetermined window exceed the threshold, the sequence generating means is reloaded with another portion of the received data stream and the process is repeated until the synchronization detect signal is asserted.
摘要翻译：公开了一种同步检测器，其中接收的数据流的一部分被并行加载到序列生成装置中。序列生成装置提供与发送的同步信号进行比较的本地同步序列，并且计数错误计数。如果在预定“窗口”中出现的错误数低于预定阈值，则断言同步检测信号。然而，如果预定窗口中的错误超过阈值，则序列发生装置被重新加载接收的数据流的另一部分，并重复处理，直到同步检测信号被断言。

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