公开(公告)号：US06275164B1

公开(公告)日：2001-08-14

申请号：US09210500

申请日：1998-12-11

Applicant: John W. MacConnell ,  Richard W. D. Booth

Inventor： John W. MacConnell ,  Richard W. D. Booth

IPC: G08B2508

CPC classification number: G01S19/17 ,  G01S5/0027 ,  G01S5/02 ,  G01S5/0226 ,  G01S5/0231

Abstract: A low-cost emergency locator beacon (ELB) device that transmits an identifying serial number in addition to the beacon signal. This transmission includes an audio modulated Manchester encoded digital version of the serial number, and an analog, voice synthesized version of the serial number. In one embodiment, the device incorporates a receiver that enables the user of the device to enter into two-way, direct voice communication with a rescuer. The device also includes an automatic receive function which facilitates operation of the device by users not aware or not able to operate the device. In another embodiment, the ELB device includes an inhibit function which prevents non-emergency, ELB device to ELB device communication. In yet another embodiment, the present device incorporates a global positioning system (GPS) receiver which reads, processes and stores positioning information broadcast by GPS satellites, then broadcasts the GPS position information in conjunction with the beacon signal and identifying serial number.

Abstract translation: 一种低成本的紧急定位信标（ELB）设备，除了信标信号之外还发送识别序列号。 该传输包括序列号的音频调制曼彻斯特编码数字版本，以及序列号的模拟，语音合成版本。 在一个实施例中，该设备包括接收器，其使设备的用户能够与救援者进行双向，直接的语音通信。 该设备还包括自动接收功能，其便于用户不知道或不能操作设备的设备的操作。 在另一个实施例中，ELB装置包括防止非紧急ELB设备进行ELB设备通信的禁止功能。 在又一个实施例中，本装置包括全球定位系统（GPS）接收机，其读取，处理和存储由GPS卫星广播的定位信息，然后结合信标信号广播GPS位置信息并识别序列号。

公开(公告)号：US4061974A

公开(公告)日：1977-12-06

申请号：US699002

申请日：1976-06-21

Applicant: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  Richard L. Sydnor ,  John W. MacConnell

Inventor： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  Richard L. Sydnor ,  John W. MacConnell

IPC: G04G7/02 ,  H03L7/06 ,  H03L7/26 ,  H04B1/50

CPC classification number: H03L7/26 ,  G04G7/02 ,  H03L7/06 ,  H04B1/50

Abstract: A system for synchronizing a signal at a remotely located slave station with the phase and frequency of a signal generated at a master station. The signal transmitted at the master station and received by the slave station provides compensation for the phase shift caused by the transmission path delays between the master and slave station. The slave station transmits a signal to the master station at a frequency that is different from the frequency of the signal being transmitted by the master station. The signal transmitted by the slave station is received by the master station while the master station transmitter is off. The signal transmitted by the master station is received by the slave station while the slave station transmitter is off.

Abstract translation: 一种用于将远程定位的从站处的信号与在主站产生的信号的相位和频率同步的系统。 在主站发送并由从站接收的信号为由主站和从站之间的传输路径延迟引起的相移提供补偿。 从站以与主站发送的信号的频率不同的频率向主站发送信号。 由主站发送的信号由主站接收，而主站发射机关闭。 由主站发送的信号由从站接收，而从站发送器关闭。

公开(公告)号：US06417729B1

公开(公告)日：2002-07-09

申请号：US09491538

申请日：2000-01-26

Applicant: Normand T. Lemay ,  Brian T. Brunn ,  John W. MacConnell ,  Eric Sadowski ,  Eric W. Lofstad

Inventor： Normand T. Lemay ,  Brian T. Brunn ,  John W. MacConnell ,  Eric Sadowski ,  Eric W. Lofstad

IPC: H03G320

CPC classification number: G01R21/10 ,  G01R21/14 ,  H03B5/04 ,  H03C1/06 ,  H03F1/345 ,  H03F3/45475 ,  H03G3/004 ,  H03G3/3042 ,  H03L1/02 ,  H03L7/18 ,  Y10S323/907

Abstract: The present invention presents a closed loop system that utilizes a non-linear reference to control a power amplifier's output power in order to obtain a linear transfer function of dB per adjustment step of a reference input. The closed loop system demonstrates that each non-linear stage/step in an automatic gain control system can create a linear closed loop system when using a non-linear reference. The closed loop system of the present invention eliminates the need for a linearization circuit for the system's power detector. The closed loop system may be used with most power amplifiers when linear control in terms of dB vs. adjustment setting of the input reference signal is desired. Output power in terms of dBms can be accurately set in linear steps where power control over a wide dynamic range is desired.

Abstract translation: 本发明提出了一种闭环系统，其利用非线性参考来控制功率放大器的输出功率，以便获得参考输入的每个调节步长的dB的线性传递函数。 闭环系统表明，当使用非线性参考时，自动增益控制系统中的每个非线性阶段/步骤可以创建线性闭环系统。 本发明的闭环系统消除了对系统功率检测器的线性化电路的需要。 当对于输入参考信号的调整设置的dB进行线性控制时，闭环系统可以与大多数功率放大器一起使用。 以dBms为单位的输出功率可以在需要宽动态范围内的功率控制的线性步骤中精确设置。

公开(公告)号：US06333975B1

公开(公告)日：2001-12-25

申请号：US09261452

申请日：1999-03-03

Applicant: Brian T. Brunn ,  John W. MacConnell ,  Laurent Maleysson ,  Eric W. Lofstad

Inventor： Brian T. Brunn ,  John W. MacConnell ,  Laurent Maleysson ,  Eric W. Lofstad

IPC: H04M1100

CPC classification number: H04M11/002 ,  G01D4/004 ,  Y02B90/242 ,  Y02B90/246 ,  Y04S20/322 ,  Y04S20/42

Abstract: A meter reading system preferably includes an external modem module (EMM), a hub and a data collection system. The EMM communicates with one or more utility meters and, as such, is preferably selected on the basis that it incorporates a communication format that is compatible with the communication format of the utility meter such that the utility meter does not require modification to be communicatively coupled to the EMM. The EMM obtains meter data from the utility meter and converts to a radio frequency communication format. The radio frequency formatted data is then transferred to the hub. The hub then translates the radio frequency data into an analog or digital telephone communication format, which is then transferred to the data collection system for use by the utility as desired, e.g. utility billing, tracking, control, etc. The data collection system need only recognize one communication format rather than attempting to accommodate numerous message formats such as wires, coaxial cable, optical fiber, or radio frequency.

Abstract translation: 抄表系统优选地包括外部调制解调器模块（EMM），集线器和数据收集系统。 EMM与一个或多个公用事业计量表进行通信，因此优选地基于其包含与公用事业计量表的通信格式兼容的通信格式来选择，使得公用事业计量表不需要修改以通信耦合 到EMM。 EMM从公用事业仪表获取仪表数据，并转换为射频通信格式。 然后将射频格式化的数据传输到集线器。 中心然后将射频数据转换成模拟或数字电话通信格式，然后将其传送到数据收集系统，供实用程序根据需要使用，例如， 公用事业计费，跟踪，控制等。数据收集系统只需要识别一种通信格式，而不是尝试适应许多消息格式，如电线，同轴电缆，光纤或射频。