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11. 发明授权

US6118567A Efficient encoding and detection method and device for binary intensity modulated optical data signals 失效
标题翻译：用于二进制强度调制光数据信号的高效编码和检测方法及装置
公开(公告)号：US6118567A
公开(公告)日：2000-09-12
申请号：US940905
申请日：1997-09-30
申请人： Rachid M. Alameh , Bruce C. Eastmond , Thomas J. Walczak
发明人： Rachid M. Alameh , Bruce C. Eastmond , Thomas J. Walczak
IPC分类号： H04L25/49 , H04L27/06 , H04B10/06 , H04B1/10 , H04B10/00
CPC分类号： H04L25/4902 , H04L27/06
摘要： A waveform encoding method and device provide for generating/receiving a power efficient binary intensity modulated optical data signal from a binary source signal which minimizes a time between adjacent pulse transitions and maximizes a pulse peak amplitude for transmission over a low-power wireless infrared link. In generating the signal, the method includes: generating a Q-ary pulse position modulation, Q-PPM, encoded data signal from binary data where Q represents 2.sup.L time slots and L is a predetermined integer representing a predetermined number of binary source bits of the power efficient binary intensity modulated optical data signal; generating an efficient binary intensity modulated signal by increasing the pulse peak amplitude of the Q-PPM encoded data signal by a factor of k, k a predetermined value, and decreasing a pulse width of the Q-PPM encoded data signal by k; and transmitting the efficient binary intensity modulated signal over the low-power wireless infrared link.
摘要翻译：波形编码方法和装置提供从二进制源信号产生/接收功率有效的二进制强度调制的光数据信号，其使相邻脉冲转变之间的时间最小化并且最大化用于在低功率无线红外线链路上传输的脉冲峰值幅度。在产生该信号时，该方法包括：从二进制数据产生Q-ary脉冲位置调制Q-PPM，其中Q表示2L时隙，L是表示预定数量的二进制源位的预定整数功率有效的二进制强度调制光数据信号; 通过将Q-PPM编码数据信号的脉冲峰值幅度增加k个k个预定值，并且将Q-PPM编码数据信号的脉冲宽度减小k来产生有效的二进制强度调制信号; 并通过低功率无线红外线链路传输有效的二进制强度调制信号。

12. 发明授权

US5193223A Power control circuitry for a TDMA radio frequency transmitter 失效
标题翻译： TDMA射频发射机的功率控制电路
公开(公告)号：US5193223A
公开(公告)日：1993-03-09
申请号：US920178
申请日：1992-07-27
申请人： Thomas J. Walczak , Stephen V. Cahill
发明人： Thomas J. Walczak , Stephen V. Cahill
IPC分类号： H03G3/20 , H04B1/04 , H04B1/40 , H04B1/56 , H04B7/005
CPC分类号： H04W52/52 , H03G3/3047 , H04B1/40 , H04B1/403 , H04B1/56
摘要： A TDMA cellular telephone (600) includes in its transmit signal path, microphone (608), vocoder (612), data format circuitry (601), quadrature modulator (602), 90 MHz local oscillator (606), transmitter with mixer (604), transmitter filter (618), and antenna (620). In its receive signal path, the TDMA cellular telephone (600) includes receiver filter (622) coupled to antenna (620), quadrature demodulator (624), and data deformat circuitry (625). The channel frequency of TDMA cellular telephone (600) is loaded into synthesizer (616) by microcomputer (614) and applied to transmitter (604) and demodulator (624). TDMA cellular telephone (600) is controlled by microcomputer (614) which includes a memory with a control and signaling computer program stored therein. Transmitter (604) includes novel power control circuitry (100) comprised of variable gain stage (104), mixer (106), bandpass filter (109), and directional coupler (112) in a forward path, and detector (116), A/D converter (118 ), digital controller (120), and D/A converter (126) in a feedback path.
摘要翻译： TDMA蜂窝电话（600）在其发射信号路径中包括麦克风（608），声码器（612），数据格式电路（601），正交调制器（602），90MHz本地振荡器（606），具有混频器），发射机滤波器（618）和天线（620）。在其接收信号路径中，TDMA蜂窝电话（600）包括耦合到天线（620），正交解调器（624）和数据去格局电路（625）的接收机滤波器（622）。 TDMA蜂窝电话（600）的信道频率由微计算机（614）加载到合成器（616）中并应用于发射机（604）和解调器（624）。 TDMA蜂窝电话（600）由微计算机（614）控制，微计算机（614）包括其中存储有控制和信令计算机程序的存储器。发射器（604）包括由前向路径中的可变增益级（104），混频器（106），带通滤波器（109）和定向耦合器（112）组成的新型功率控制电路（100），以及检测器 / D转换器（118），数字控制器（120）和D / A转换器（126）。

13. 发明授权

US5163159A Dual mode automatic frequency control 失效
标题翻译：双模自动频率控制
公开(公告)号：US5163159A
公开(公告)日：1992-11-10
申请号：US559775
申请日：1990-07-30
申请人： Randall W. Rich , Rashid M. Osman , Thomas J. Walczak , Stephen V. Cahill
发明人： Randall W. Rich , Rashid M. Osman , Thomas J. Walczak , Stephen V. Cahill
IPC分类号： H03J7/06 , H04B1/40 , H04L27/227 , H04Q7/22 , H04Q7/24 , H04Q7/26 , H04Q7/30 , H04Q7/36 , H04Q7/38
CPC分类号： H04B1/0032 , H03J7/065 , H04B1/0003 , H04B1/406 , H04L27/2272
摘要： A frequency control system for a dual-mode radiotelephone (152-238; 252-320) operative to receive either an FM signal or a DQPSK signal. In a first embodiment, when operative to receive the FM signal, the frequency of the reference oscillator (192) of the radiotelephone (152-222) is maintained in a fixed relation with the frequency of the FM signal. When operative to receive the DQPSK signal, the reference oscillator (192) is maintained in a fixed relation with the frequency of the DQPSK signal as determined by a digital signal processor (212). In a second embodiment, when operative to receive the FM signal, the frequency of an offset control oscillator (320) is maintained in a fixed relation with the frequency of the FM signal. When operative to receive the DQPSK signal, the reference oscillator (292) is maintained in a fixed relation with the frequency of the DQPSK signal as determined by a digital signal processor (312).
摘要翻译：一种用于双模式无线电话（152-238; 252-320）的频率控制系统，其操作以接收FM信号或DQPSK信号。在第一实施例中，当操作以接收FM信号时，无线电话（152-222）的参考振荡器（192）的频率与FM信号的频率保持固定关系。当操作以接收DQPSK信号时，参考振荡器（192）与由数字信号处理器（212）确定的DQPSK信号的频率保持固定的关系。在第二实施例中，当操作以接收FM信号时，偏移控制振荡器（320）的频率与FM信号的频率保持固定关系。当操作以接收DQPSK信号时，参考振荡器（292）与由数字信号处理器（312）确定的DQPSK信号的频率保持固定的关系。

14. 发明授权

US4523155A Temperature compensated automatic output control circuitry for RF signal power amplifiers with wide dynamic range 失效
标题翻译：用于具有宽动态范围的射频信号功率放大器的温度补偿自动输出控制电路
公开(公告)号：US4523155A
公开(公告)日：1985-06-11
申请号：US682805
申请日：1984-12-17
申请人： Thomas J. Walczak , Richard M. Stone , Gary M. Cristiano
发明人： Thomas J. Walczak , Richard M. Stone , Gary M. Cristiano
IPC分类号： H03G3/20 , H03G3/30
CPC分类号： H03G3/3042
摘要： Improved temperature compensated, automatic output control (AOC) circuitry for RF signal power amplifiers is described that maintains the output power within one-half dB of a selected one of eight power levels varying from nine milliwatts to five watts, a dynamic range of twenty-eight dB. The amplification of the RF signal amplifier is proportional to a drive current signal provided by a current amplifier. A half-wave rectifier is coupled to the output of final amplifiers for generating an output power signal that has a magnitude proportional to the output power. The half-wave rectifier is temperature compensated for and biased by a diode coupled to the rectifier by one resistor and coupled to supply voltage by another resistor. The output power voltage is further coupled to an amplifier having an amplification factor selected by level control signals. The amplified output power signal is coupled to a comparator which varies the drive current provided by the current amplifier in response to the voltage difference between the amplified output power signal and a reference voltage.
摘要翻译：描述了用于RF信号功率放大器的改进的温度补偿的自动输出控制（AOC）电路，其将输出功率维持在从9毫瓦变化到5瓦的八个功率电平中选定的八分之一的二分之一dB的范围内，八分贝。 RF信号放大器的放大率与由电流放大器提供的驱动电流信号成比例。半波整流器耦合到最终放大器的输出端，用于产生具有与输出功率成比例的幅度的输出功率信号。半波整流器通过一个电阻器对耦合到整流器的二极管进行温度补偿和偏置，并被另一个电阻器供电。输出功率电压进一步耦合到具有由电平控制信号选择的放大系数的放大器。放大的输出功率信号耦合到比较器，该比较器响应于放大的输出功率信号和参考电压之间的电压差而改变由电流放大器提供的驱动电流。

15. 发明授权

US07532164B1 Circular polarized antenna 有权
标题翻译：圆极化天线
公开(公告)号：US07532164B1
公开(公告)日：2009-05-12
申请号：US11778790
申请日：2007-07-17
申请人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
发明人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
IPC分类号： H01Q1/38 , H01Q11/12
CPC分类号： H01Q9/0428
摘要： A circular polarized signal receiving antenna (100) including an active element having first and second ends separated by a gap, a dimension of the active element, between the first and second ends thereof, corresponding to approximately one wavelength of a resonant operating frequency of the antenna. A feed-point is coupled to the active element, wherein the feed-point is located approximately one-quarter of the wavelength from the first end of the active element and approximately three-quarters of the wavelength from the second end of the active element. In one embodiment, the feed-point is reactively coupled to the active element.
摘要翻译：圆偏振信号接收天线（100）包括有源元件，所述有源元件具有由间隙分开的第一和第二端，所述有源元件的第一和第二端之间的尺寸对应于所述有源元件的谐振工作频率的大约一个波长天线。馈电点耦合到有源元件，其中馈电点位于离有源元件的第一端大约四分之一波长的距离处，并且距离有源元件的第二端的波长大约是四分之三。在一个实施例中，馈电点反应地耦合到有源元件。

16. 发明授权

US07267592B1 Latching system for an outboard motor cowl 有权
标题翻译：舷外电机罩的锁定系统
公开(公告)号：US07267592B1
公开(公告)日：2007-09-11
申请号：US11491649
申请日：2006-07-24
申请人： Jolayne K. Ingebritson , Thomas J. Walczak
发明人： Jolayne K. Ingebritson , Thomas J. Walczak
IPC分类号： B63H20/32
CPC分类号： B63H20/32
摘要： A latch mechanism for a cowl of an outboard motor provides a handle and retaining mechanism for the handle which define a detent position when the handle is in a latching or closed position. A protrusion of the handle rotates in a plane which places it between a roller and a metallic ball when the handle is in a latching position. The metallic ball is shaped to be received in a groove formed in the protrusion in order to define the detent position when the handle is in its latched position.
摘要翻译：用于舷外马达的整流罩的闩锁机构提供了一种用于手柄的把手和保持机构，其在手柄处于闩锁或关闭位置时限定制动位置。当把手处于锁定位置时，手柄的突起在平面中旋转，将其放置在辊和金属球之间。金属球被成形为容纳在形成在突起中的凹槽中，以便当手柄处于其锁定位置时限定制动位置。

17. 发明授权

US06932662B1 Air induction system within a cowl of a marine propulsion system 有权
标题翻译：船用推进系统内的空气感应系统
公开(公告)号：US06932662B1
公开(公告)日：2005-08-23
申请号：US10793408
申请日：2004-03-04
申请人： Thomas J. Walczak
发明人： Thomas J. Walczak
IPC分类号： B63H20/32
CPC分类号： B63H20/32
摘要： A flow conditioning member is attached to a distal end, or lip, of an air conduit within a space formed by inner and outer walls of a cowl for an outboard motor. The flow conditioning member is shaped to decrease the likelihood that a thickened boundary layer will form within the conduit as air flows from an air passage formed through the cowl to an air intake system of an internal combustion engine. The flow conditioning member is shaped to block the passage of water from the air passage to the air conduit while improving the efficiency of air flow from the air passage, into a space between the inner and outer walls, and into the air conduit.
摘要翻译：流动调节构件附接到由用于舷外马达的整流罩的内壁和外壁形成的空间内的空气管道的远端或唇缘。流动调节构件成形为降低当空气从形成通过整流罩的空气通道流入内燃机的进气系统时，在管道内形成增厚的边界层的可能性。流动调节构件被成形为阻止水从空气通道到空气管道的通过，同时提高从空气通道到内壁和外壁之间的空间以及空气管道中的空气流动的效率。

18. 发明授权

US5777856A Integrated shielding and mechanical support 失效
标题翻译：集成屏蔽和机械支撑
公开(公告)号：US5777856A
公开(公告)日：1998-07-07
申请号：US692548
申请日：1996-08-06
申请人： James P. Phillips , Thomas J. Walczak , Michael W. Schellinger , Scott Semenik , Thomas Carey Reardon, deceased
发明人： James P. Phillips , Thomas J. Walczak , Michael W. Schellinger , Scott Semenik , Thomas Carey Reardon, deceased
IPC分类号： H04M1/02 , H05K9/00
CPC分类号： H04M1/0277 , H05K9/0037
摘要： The integrated shielding and mechanical support simultaneously addresses the problems of providing RF shielding for an electronic device such as a radio transceiver and providing a rigid mechanical assembly for the electronic device. Two conductive rails (120, 130) hold together multiple printed circuit boards (PCBs) (140, 160) having conductive layers (145, 165) to produce a four-sided shielding box (180) that protects certain electronic circuits on the PCBs from electromagnetic interference. An internal conductive shield (150) subdivides the inside of the shielding box to provide additional protection for sensitive circuitry. The shielding box inserts into an opening in a five-sided housing section (110) using guides (112, 114, 116, 118), which simplifies assembly of PCBs in the housing and facilitates automated assembly. A second housing section (190) attaches to the shielding box (180) once it is inserted into the five-sided housing section (110).
摘要翻译：集成屏蔽和机械支持同时解决了为电子设备（例如无线电收发器）提供RF屏蔽并为电子设备提供刚性机械组件的问题。两个导电轨道（120,130）将具有导电层（145,165）的多个印刷电路板（PCB）（140,160）保持在一起以产生四边屏蔽盒（180），该四边屏蔽盒保护PCB上的某些电子电路，电磁干扰。内部导电屏蔽（150）细分屏蔽盒的内部，为敏感电路提供额外的保护。屏蔽盒使用引导件（112,114,116,118）插入五边壳体部分（110）中的开口中，这简化了壳体中PCB的组装并且有助于自动组装。一旦第二壳体部分插入到五面壳体部分110中，第二壳体部分190连接到屏蔽盒180。

19. 发明授权

US5150359A Multiplexed synchronous/asynchronous data bus 失效
标题翻译：多路同步/异步数据总线
公开(公告)号：US5150359A
公开(公告)日：1992-09-22
申请号：US563364
申请日：1990-08-06
申请人： Gregory P. Wilson , Bryan A. Potratz , Thomas J. Walczak , Jeffery L. Mullins , Mark E. Prill
发明人： Gregory P. Wilson , Bryan A. Potratz , Thomas J. Walczak , Jeffery L. Mullins , Mark E. Prill
IPC分类号： H04L29/04 , H04L5/02 , H04L5/16 , H04L25/49 , H04L29/08
CPC分类号： H04L25/4904 , H04L5/16
摘要： A multiplexed synchronous/asynchronous data bus is disclosed in which three bus lines are used to convey bidirectional synchronous data between at least two data devices at a relatively low data rate. Valid half duplex asynchronous data is applied at a higher data transfer rate to one of the three bus lines when only one of the bus lines is held in a logic high state.
摘要翻译：公开了一种复用的同步/异步数据总线，其中三条总线用于以相对低的数据速率在至少两个数据设备之间传送双向同步数据。当只有一条总线保持在逻辑高电平状态时，有效的半双工异步数据以较高的数据传输速率应用于三条总线之一。

20. 发明授权

US5020076A Hybrid modulation apparatus 失效
标题翻译：混合调制装置
公开(公告)号：US5020076A
公开(公告)日：1991-05-28
申请号：US526156
申请日：1990-05-21
申请人： Stephen V. Cahill , Steven F. Gillig , Thomas J. Walczak
发明人： Stephen V. Cahill , Steven F. Gillig , Thomas J. Walczak
IPC分类号： H04B14/00 , H04L27/20
CPC分类号： H04B14/006 , H04L27/2075
摘要： A .pi./4-shift DQPSK modulator modulates a digitized voice signal and other information. An FM modulator modulates the analog voice signal and other information. The FM modulator is coupled to the quadrature mixers (109 and 110) of the .pi./4-shift DQPSK modulator. When an FM modulated signal is required, the mixers (109 and 110) are biased (114) to allow carrier feedthrough by applying a fixed, non-zero DC signal to one or both mixers (109 and 110). The carrier is then FM modulated using conventional methods such as voltage-modulation of a phase locked loop (PPL) (113). When .pi./4-shift DQPSK is to be generated, the conventional baseband I and Q vector-length signals (101 and 102) are applied to the mixers (109 and 110), and the carrier is left unmodulated by switching (115) out the input signal to the PLL (113). The PPL (113) will then generate only the carrier frequency to be mixed with the I and Q vector-length signals (101 and 102).
摘要翻译： pi / 4位DQPSK调制器调制数字化语音信号和其他信息。 FM调制器调制模拟语音信号和其他信息。 FM调制器耦合到pi / 4位DQPSK调制器的正交混频器（109和110）。当需要FM调制信号时，通过向一个或两个混频器（109和110）施加固定的非零DC信号，混频器（109和110）被偏置（114）以允许载波馈通。然后使用诸如锁相环（PPL）（113）的电压调制的常规方法对载波进行FM调制。当要生成pi / 4位DQPSK时，传统的基带I和Q向量长度信号（101和102）被施加到混频器（109和110），并且通过切换（115）输出使载波不被调制输入到PLL（113）的信号。然后，PPL（113）将仅生成要与I和Q矢量长度信号（101和102）混合的载波频率。

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