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    • 1. 发明授权
    • Remote control system having symmetrical tone, send/receive signaling
circuits for radio communications
    • 具有对称音调的遥控系统,用于无线电通信的发送/接收信令电路
    • US4654881A
    • 1987-03-31
    • US568170
    • 1984-01-04
    • Armin V. DolikianMichael D. KotzinBrian J. Budnik
    • Armin V. DolikianMichael D. KotzinBrian J. Budnik
    • H03G1/02H04B1/00H04B7/00
    • H03G1/02
    • The remote control system having symmetrical signaling circuits for radio communications is coupled to a single wire line/audio channel and permits two or more units, base stations and/or remote consoles, to be coupled to the single wire line. Each signaling circuit comprises a wire line coupler for coupling to the wire line, an audio input line and an audio output line. An automatic gain control circuit is coupled between the wire coupler and the audio output line and a filter and line driver are coupled between the audio input line and the wire coupler. A control unit including a microprocessor, a tone encoder, a tone decoder, a timer, a clock, and a memory is coupled by output lines to the automatic gain control circuit for controlling the modes of operation thereof which include a slow decay mode, a fast decay mode, an adapt mode and a hold gain mode. The output from the gain control circuit is also routed through a band pass filter and a limiter to the control unit. Further, the tone encoder of the control unit is coupled to a summing circuit situated between the filter and line driver through a filter and level control circuit.The protocol programmed in the microprocessor enables any unit to take control of the audio channel by initiating the sending of a message. Also mute gates are provided for disabling audio output or audio input while a message is being sent or received over the audio channel.
    • 具有用于无线电通信的对称信令电路的遥控系统耦合到单个有线线路/音频信道,并且允许两个或更多个单元,基站和/或远程控制台耦合到单个有线线路。 每个信号电路包括用于耦合到有线线路的有线线路耦合器,音频输入线路和音频输出线路。 自动增益控制电路耦合在线耦合器和音频输出线之间,并且滤波器和线路驱动器耦合在音频输入线和线耦合器之间。 包括微处理器,音调编码器,音调解码器,定时器,时钟和存储器的控制单元通过输出线耦合到自动增益控制电路,用于控制其运行模式,其包括慢衰减模式, 快速衰减模式,适应模式和保持增益模式。 来自增益控制电路的输出也通过带通滤波器和限幅器被路由到控制单元。 此外,控制单元的音调编码器通过滤波器和电平控制电路耦合到位于滤波器和线路驱动器之间的求和电路。 微处理器中编程的协议使任何单元能够通过发送消息来控制音频通道。 还提供静音门,用于在通过音频通道发送或接收消息时禁用音频输出或音频输入。
    • 2. 发明授权
    • Automatic gain control for a remote control system having symmetrical
send/receive signaling circuits
    • 具有对称发送/接收信号电路的遥控系统的自动增益控制
    • US4627098A
    • 1986-12-02
    • US797722
    • 1985-11-13
    • Arman V. DolikianMichael D. KotzinBrian J. Budnik
    • Arman V. DolikianMichael D. KotzinBrian J. Budnik
    • H03G1/02H04B7/005H04B1/00H03G3/20H04B7/00
    • H03G1/02H04B7/005
    • The remote control system having symmetrical signaling circuits for radio communications is coupled to a single wire line/audio channel and permits two or more units, base stations and/or remote consoles, to be coupled to the single wire line. Each signaling circuit comprises a wire line coupler for coupling to the wire line, an audio input line and an audio output line. An automatic gain control circuit is coupled between the wire coupler and the audio output line and a filter and line driver are coupled between the audio input line and the wire coupler. A control unit including a microprocessor, a tone encoder, a tone decoder, a timer, a clock, and a memory is coupled by output lines to the automatic gain control circuit for controlling the modes of operation thereof which include a slow decay mode, a fast decay mode, an adapt mode and a hold gain mode. The output from the gain control circuit is also routed through a band pass filter and a limiter to the control unit. Further, the tone encoder of the control unit is coupled to a summing circuit situated between the filter and line driver through a filter and level control circuit.The protocol programmed in the microprocessor enables any unit to take control of the audio channel by initiating the sending of a message. Also mute gates are provided for disabling audio output or audio input while a message is being sent or received over the audio channel.
    • 具有用于无线电通信的对称信令电路的遥控系统耦合到单个有线线路/音频信道,并且允许两个或多个单元,基站和/或远程控制台耦合到单个有线线路。 每个信号电路包括用于耦合到有线线路的有线线路耦合器,音频输入线路和音频输出线路。 自动增益控制电路耦合在线耦合器和音频输出线之间,并且滤波器和线路驱动器耦合在音频输入线和线耦合器之间。 包括微处理器,音调编码器,音调解码器,定时器,时钟和存储器的控制单元通过输出线耦合到自动增益控制电路,用于控制其运行模式,其包括慢衰减模式, 快速衰减模式,适应模式和保持增益模式。 来自增益控制电路的输出也通过带通滤波器和限幅器被路由到控制单元。 此外,控制单元的音调编码器通过滤波器和电平控制电路耦合到位于滤波器和线路驱动器之间的求和电路。 微处理器中编程的协议使任何单元能够通过发送消息来控制音频通道。 还提供静音门,用于在通过音频通道发送或接收消息时禁用音频输出或音频输入。
    • 3. 发明授权
    • Control circuitry for a pulse-width-modulated switching power supply
    • 用于脉冲宽度调制开关电源的控制电路
    • US4521726A
    • 1985-06-04
    • US537555
    • 1983-10-03
    • Brian J. Budnik
    • Brian J. Budnik
    • H02M3/156G05F1/56
    • H02M3/156
    • Improved control circuitry for pulse-width-modulated power supplies is described that includes a pulse generator for generating a train of trigger pulses at a predetermined repetition frequency, a signal source for generating a reference voltage and a comparator for comparing the power supply output voltage to the reference voltage and generating a first state of a switching control signal in response to each trigger pulse from the pulse generator and a second state of the switching control signal when the magnitude of the power supply output voltage is equal to the magnitude of the reference voltage. The first state of the switching control signal enables switching transistors of the switching power supply, and the second state of the switching control signal disables the switching transistors. The comparator also includes circuitry for reducing the magnitude of the reference voltage when the switching control signal has the second state. Thus, once the switching transistors are disabled by the second state of the switching control signal, the magnitude of the reference voltage is reduced by a predetermined amount so that the switching transistors cannot be re-enabled until the next trigger pulse from the pulse generator causes the switching control signal to change states.
    • 描述了用于脉冲宽度调制电源的改进的控制电路,其包括用于产生预定重复频率的一串触发脉冲的脉冲发生器,用于产生参考电压的信号源和用于将电源输出电压与 参考电压,并且响应于来自脉冲发生器的每个触发脉冲产生开关控制信号的第一状态,并且当电源输出电压的大小等于参考电压的幅度时,切换控制信号的第二状态 。 开关控制信号的第一状态使得开关电源的开关晶体管能够切换控制信号的第二状态禁止开关晶体管。 比较器还包括当开关控制信号具有第二状态时减小参考电压幅度的电路。 因此,一旦开关晶体管被开关控制信号的第二状态禁用,则参考电压的幅度减小预定量,使得开关晶体管不能被重新使能,直到来自脉冲发生器的下一个触发脉冲导致 切换控制信号改变状态。
    • 4. 发明授权
    • Amplifier with adaptive output allocation and method thereof
    • 具有自适应输出分配的放大器及其方法
    • US5778307A
    • 1998-07-07
    • US625502
    • 1996-03-29
    • Brian J. Budnik
    • Brian J. Budnik
    • H04B1/04H04B7/005H04B1/02
    • H04W52/343H04B1/0483H04W52/346H04W52/52
    • An amplifier with adaptive output capacity allocation (201) including a processor (203), coupled to a signal, for examining the signal to determine a first capacity requirement and a second capacity requirement, and an amplifier (213), coupled to the processor and the signal, for processing the signal in accordance with the first capacity requirement and the second capacity requirement to provide an output signal thus maximizing power out of the amplifier given incoming signal conditions. A corresponding method of dynamically allocating spectral power in a transmitter having a peak power capability for transmitting information on a plurality of subcarriers during a plurality of predetermined sequential frame periods includes sampling the information (503) corresponding to a frame period to obtain a subcarrier envelope amplitude corresponding to each of the plurality of subcarriers; summing these subcarrier envelope amplitudes (505) to obtain a total envelope amplitude; examining the total envelope amplitude (507) to identify a maximum total envelope amplitude; and setting for the frame period a gain (509) in the transmitter such that the maximum total envelope amplitude substantially produces the peak power capability.
    • 一种具有自适应输出容量分配(201)的放大器,包括耦合到信号的处理器(203),用于检查信号以确定第一容量要求和第二容量要求;以及放大器(213),耦合到处理器和 用于根据第一容量要求处理信号的信号和第二容量要求,以提供输出信号,从而在给定输入信号条件下使放大器的功率最大化。 在多个预定的连续帧周期期间,在具有用于在多个子载波上发送信息的峰值功率能力的发射机中动态分配频谱功率的相应方法包括对与帧周期对应的信息(503)进行采样,以获得副载波包络幅度 对应于所述多个子载波中的每一个; 将这些子载波包络幅度(505)相加以获得总包络幅度; 检查总包络幅度(507)以识别最大总包络幅度; 并且在帧周期中设置发射机中的增益(509),使得最大总包络幅度基本上产生峰值功率能力。
    • 5. 发明授权
    • Method and apparatus for improved message reception at a fixed system
receiver
    • 用于在固定系统接收机处改进消息接收的方法和装置
    • US5521926A
    • 1996-05-28
    • US283369
    • 1994-08-01
    • Douglas I. AyerstBrian J. BudnikMalik J. Khan
    • Douglas I. AyerstBrian J. BudnikMalik J. Khan
    • H04J3/16H04W84/02H04W88/18H04J3/06
    • H04W84/025H04W88/185
    • A fixed system receiver (107), which includes a forward receiver (305), a reverse receiver (310), and a response timer (215), is for use in a radio communication system (100) having a forward radio channel and a reverse radio channel. A command is transmitted in a forward channel radio signal to a selective call transceiver. The forward receiver (305) is for receiving, demodulating, and decoding the command. The reverse receiver (310) is for receiving and demodulating the reverse channel radio signal. The response timer (215), which is coupled to the forward receiver (305) and the reverse receiver (310), is for determining a response period beginning substantially at a scheduled response time included in the command and having a duration which is substantially a designated length of the data unit included in the command, and for generating a control signal which enables the reverse receiver (310) during the response period.
    • 包括正向接收器(305),反向接收器(310)和响应定时器(215)的固定系统接收器(107)用于具有正向无线电信道和无线电信道的无线电通信系统(100) 反向无线电频道。 在正向信道无线电信号中将命令发送到选择性呼叫收发器。 前向接收机(305)用于接收,解调和解码该命令。 反向接收机(310)用于接收和解调反向信道无线电信号。 耦合到正向接收器(305)和反向接收器(310)的响应定时器(215)用于确定基本上在包括在命令中的调度的响应时间开始的响应周期,并且具有基本为 包括在命令中的数据单元的指定长度,并且用于生成在响应周期期间使反向接收器(310)能够使能的控制信号。