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1. 发明授权

US4445223A Apparatus and method for determining the presence and frequency of a periodic signal 失效
标题翻译：用于确定周期信号的存在和频率的装置和方法
公开(公告)号：US4445223A
公开(公告)日：1984-04-24
申请号：US222422
申请日：1981-01-05
申请人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
发明人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
IPC分类号： H04B1/10 , C30B29/62 , G01R23/02 , G01S1/24 , G01S5/10 , H03K3/78
CPC分类号： G01S1/245 , G01R23/02
摘要： An apparatus and method for determining the period and frequency of a signal intefering with a desired Loran C signal are provided. A sample of the interfering signal is generated at a time corresponding to the peak of the autocorrelation function of the interfering signal with respect to the predetermined pulse tracking reference point of the Loran C signal. Indicia of the period and frequency of the interferer is obtained from the timing of the sample generated at the autocorrelation function peak.
摘要翻译：提供了一种用于确定与期望的罗兰C信号的信号的周期和频率的装置和方法。在与干涉信号的自相关函数的峰值相对于罗兰C信号的预定脉冲跟踪参考点的峰值的时间产生干扰信号的样本。从自相关函数峰值处生成的样本的定时获得干扰源的周期和频率的标记。

2. 发明授权

US07170868B2 Method for preserving wireless resources in a wireless local area network 有权
标题翻译：用于在无线局域网中保存无线资源的方法
公开(公告)号：US07170868B2
公开(公告)日：2007-01-30
申请号：US10772832
申请日：2004-02-05
申请人： Joseph E. Phillips , Mario F. Derango , Randy L. Ekl , Michael H. Retzer
发明人： Joseph E. Phillips , Mario F. Derango , Randy L. Ekl , Michael H. Retzer
IPC分类号： H04J3/24
CPC分类号： H04W4/06 , H04W72/005 , H04W88/08
摘要： In one embodiment of the present invention, an access point (111) receives a multicast packet intended for a particular multicast group. Upon receipt, the access point only rebroadcast the multicast packet over a wireless segment if it determines that there is at least one wireless subscriber unit (131) belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. Optionally, if the multicast packet signals an automatic rebroadcast of the multicast packet over the wireless segment, the access point automatically rebroadcasts the multicast packet without determining whether there is at least one wireless subscriber unit belonging to the particular multicast group and associated with the access point that did not originate the multicast packet.
摘要翻译：在本发明的一个实施例中，接入点（111）接收用于特定多播组的组播分组。在接收到接收点时，如果它确定属于特定多播组并且与不是始发多播分组的接入点相关联的至少一个无线用户单元（131），则接入点仅在无线段上重播广播分组。可选地，如果组播分组通过无线分段发信号通知多播分组的自动转播，接入点将自动重播广播分组而不确定是否存在属于特定多播组并与接入点相关联的至少一个无线用户单元这不是源于组播数据包。

3. 发明授权

US4701944A Signalling system for trunked private calls 失效
标题翻译：用于中继私人呼叫的信令系统
公开(公告)号：US4701944A
公开(公告)日：1987-10-20
申请号：US908472
申请日：1986-09-17
申请人： Scott P. Howard , Ted A. Kozlowski , Michael H. Retzer
发明人： Scott P. Howard , Ted A. Kozlowski , Michael H. Retzer
IPC分类号： H04W84/08
CPC分类号： H04W84/08
摘要： Disclosed is a signalling system wherein a private call initiating trunked subscriber enters a private ID number on an entry means. The trunked subscriber unit decodes the entered number and forms the ID code required to request a channel. The central controller receives the request and encodes an appropriate channel grant for a trunked private call. In another aspect of the present invention, the called subscriber unit may decode and display the ID of the calling subscriber.
摘要翻译：公开了一种信令系统，其中专用呼叫发起中继用户在入口装置上输入专用ID号。中继用户单元解码输入的号码，并形成请求信道所需的ID码。中央控制器接收请求并对中继私有呼叫编码适当的信道授权。在本发明的另一方面，被叫用户单元可以对主叫用户的ID进行解码和显示。

4. 发明授权

US4416017A Apparatus and method for attenuating interfering signals 失效
标题翻译：用于衰减干扰信号的装置和方法
公开(公告)号：US4416017A
公开(公告)日：1983-11-15
申请号：US222459
申请日：1981-01-05
申请人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
发明人： Steven C. Jasper , Robert V. Janc , David S. Robins , Michael H. Retzer
IPC分类号： H04B1/10 , G01S1/24 , G01S5/10 , H04B1/12 , H04B15/00
CPC分类号： G01S1/245 , H04B1/123
摘要： A method and apparatus for attenuating an interfering signal corrupting a desired Loran C signal is provided. An interfering signal sample is determined which occurs at the peak of the autocorrelation function of the interfering signal such that the period of the interferer is known. The sample occurring at the peak of the autocorrelation function is added to or subtracted from the desired Loran C signal sample taken at a predetermined reference point during the pulses thereof such that the interfering signal is cancelled or substantially attenuated.
摘要翻译：提供了一种用于衰减干扰信号的方法和装置，其破坏了所需的罗兰C信号。确定发生在干扰信号的自相关函数的峰值处的干扰信号样本，使得干扰源的周期是已知的。在自相关函数的峰值处出现的样本被添加到或从其在脉冲期间在预定参考点处获取的期望的Loran C信号样本中减去，使得干扰信号被消除或基本上衰减。

5. 发明授权

US5554988A Apparatus and method for generating a data signal 失效
标题翻译：用于产生数据信号的装置和方法
公开(公告)号：US5554988A
公开(公告)日：1996-09-10
申请号：US295967
申请日：1994-08-23
申请人： Michael H. Retzer , Alan D. Muehlfeld
发明人： Michael H. Retzer , Alan D. Muehlfeld
IPC分类号： H03M1/76 , H03M1/46 , H03M1/66 , H03M1/78
CPC分类号： H03M1/765
摘要： An apparatus is provided for generating a multiple-level amplitude modulated data signal. The circuit provides accurate data signal level control while minimizing transient errors. A controlling level, relative to an analog reference level is provided. Multiple bit reference levels are generated from the controlling level and analog reference level. A method is provided for selecting one of the reference levels.
摘要翻译：提供一种用于产生多电平幅度调制数据信号的装置。该电路提供精确的数据信号电平控制，同时最小化瞬态误差。提供了相对于模拟参考电平的控制电平。从控制电平和模拟参考电平产生多位参考电平。提供了一种用于选择参考水平之一的方法。

6. 发明授权

US5465404A Communications receiver with an adaptive squelch system 失效
标题翻译：具有自适应静噪系统的通信接收机
公开(公告)号：US5465404A
公开(公告)日：1995-11-07
申请号：US10690
申请日：1993-01-29
申请人： Michael H. Retzer , Alan D. Muehlfeld
发明人： Michael H. Retzer , Alan D. Muehlfeld
IPC分类号： H03G3/34 , H04B1/10
CPC分类号： H03G3/344
摘要： A wireless communications receiver having an adaptive squelch system and operable in multiple states including a receiver (11) that provides a received signal when operating in a clear (unscrambled) state and when operating in a secure (scrambled) state; a squelch function (13) that generates an unsquelch signal when the received signal satisfies a quality level; and a controller (15) that sets the quality level to a predetermined level that corresponds to the receiver operating state.
摘要翻译：一种具有自适应静噪系统并且在多种状态下可操作的无线通信接收机，包括接收机（11），所述接收机（11）在以清除（未扰频）状态工作时以及当以安全（加扰）状态工作时提供接收信号; 当所述接收信号满足质量水平时，产生非叠加信号的静噪功能（13）; 以及控制器（15），其将质量等级设置为与接收器操作状态相对应的预定水平。

7. 发明授权

US5239691A Resilient housing actuated multi-level switch 失效
标题翻译：弹性壳体启动多级开关
公开(公告)号：US5239691A
公开(公告)日：1993-08-24
申请号：US765271
申请日：1992-01-06
申请人： Michael H. Retzer , Timothy W. Markison
发明人： Michael H. Retzer , Timothy W. Markison
IPC分类号： H04B1/38
CPC分类号： H04B1/38 , H04B2001/3894
摘要： A resilient housing actuated multi-level housing switch comprises a compression sensitive circuit which is actuated by compressing a resilient housing. The compression sensitive circuit comprises a compression sensing device which produces an analog signal, an A to D converter, and a microprocessor. The microprocessor is programmed with algorithms to control the power levels of communication equipment and volume levels based on signals produced by compressing the compression sensing device.
摘要翻译：弹性壳体致动多级壳体开关包括通过压缩弹性壳体致动的压缩敏感电路。压缩敏感电路包括产生模拟信号的压缩感测装置，A至D转换器和微处理器。微处理器采用算法编程，以通过压缩压缩感测装置产生的信号来控制通信设备的功率电平和音量级别。

8. 发明授权

US4377866A Time multiplexed Loran signal processing apparatus 失效
标题翻译：时间复用罗兰信号处理装置
公开(公告)号：US4377866A
公开(公告)日：1983-03-22
申请号：US222458
申请日：1981-01-05
申请人： Robert V. Janc , David S. Robins , Michael H. Retzer
发明人： Robert V. Janc , David S. Robins , Michael H. Retzer
IPC分类号： G01S1/24
CPC分类号： G01S1/245
摘要： Loran C signal processing apparatus is provided which employs a single signal channel or path to process and sample Loran C RF signals and envelope derived Loran C RF signals which in conventional approaches are processed and sampled in separate signal paths.
摘要翻译：提供了Loran C信号处理装置，其采用单个信号信道或路径来处理和采样Loran C RF信号和包络导出的Loran C RF信号，其在常规方法中以单独的信号路径进行处理和采样。

9. 发明授权

US06714795B1 Radio telephone system with one-to-many dispatch system 有权
标题翻译：无线电话系统具有一对多调度系统
公开(公告)号：US06714795B1
公开(公告)日：2004-03-30
申请号：US09603099
申请日：2000-06-26
申请人： Earle G. Long , Michael H. Retzer , Nuruddin Ladhani
发明人： Earle G. Long , Michael H. Retzer , Nuruddin Ladhani
IPC分类号： H04B700
CPC分类号： H04W76/45 , H04W4/10
摘要： A one-to-many dispatch method for use in a TDMA or other wireless telephone system. The one-to-many dispatch call is placed by sending a Request message 204 from a Personal Station PS 112 to a Control Center Station (CS) 120 which assigns a channel with an Assignment message 208. The PS 112 sends a call setup message over the control channel resulting in a channel assign message 242 being broadcast repeatedly. Call connect messages over the Assigned Channel AC 244 are also repeated from the CS 120 to indicate the open connection. A hang timer is started when the PS 112 ceases transmission of voice and the connection is torn down upon expiry of the hang timer unless another PS transmits a call setup message 234 on the Assigned Channel AC before the expiry of the hang timer.
摘要翻译：一种用于TDMA或其他无线电话系统的一对多调度方法。通过从个人站PS 112向控制中心站（CS）120发送请求消息204来分配一对多调度呼叫，控制中心站（CS）120向分配消息208分配信道.PPS 112发送呼叫建立消息所述控制信道导致重复广播信道分配消息242。通过分配的信道AC 244的呼叫连接消息也从CS 120重复以指示打开的连接。当PS 112停止语音传输时，启动挂机定时器，并且在挂机定时器期满之后连接被拆除，除非另外的PS在挂起定时器到期之前在分配的信道AC上发送呼叫建立消息234。

10. 发明授权

US5793989A Dual function interface for PCMCIA compatible peripheral cards and method of use therein 失效
标题翻译： PCMCIA兼容外设卡的双功能接口及其使用方法
公开(公告)号：US5793989A
公开(公告)日：1998-08-11
申请号：US746048
申请日：1996-11-06
申请人： Barry Moss , Denis Beaudoin , Michael H. Retzer
发明人： Barry Moss , Denis Beaudoin , Michael H. Retzer
IPC分类号： H04L12/28 , H04L29/06 , H04M11/06 , G06F13/00
CPC分类号： H04M11/06 , H04L29/06 , H04W88/06 , H04W92/00
摘要： A dual function interface operating in a Personal Computer Memory Card International Association (PCMCIA) mode of operation switches to an alternative interface operating in the appropriate mode of operation as defined by the alternative interface system specification. This is accomplished by setting a unique combination of address lines (203) and/or control lines (202) and automatically and transparently switching from the PCMCIA mode of operation to the alternate mode operation in response to the unique combination.
摘要翻译：在个人计算机存储卡国际协会（PCMCIA）操作模式下操作的双功能接口切换到以替代接口系统规范定义的适当操作模式操作的备用接口。这是通过设置地址线（203）和/或控制线（202）的独特组合来实现的，并且响应于唯一组合，自动且透明地从PCMCIA操作模式切换到替代模式操作。

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