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1.发明授权Communication receiver incorporating tone operated pulser circuit and electronic switch 失效通信接收机，用于操作音调操作的脉冲电路和电子开关
公开(公告)号：US3651413A
公开(公告)日：1972-03-21
申请号：US3651413D
申请日：1969-09-29
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/188 , H04W88/027
摘要： A communication receiver comprising a processing circuit for receiving modulated carrier signals and detecting one or more control tones therein, a pulser circuit coupled to the processing circuit and operative to produce a series of pulses for intermittently rendering the processing circuit operative, and a decoder circuit coupled to the processing circuit and responsive to the control tone or tones for generating at the output thereof a control signal, the pulser circuit being coupled to the output of the decoder circuit and responsive to the application thereto of the control signal to furnish a continuous supply voltage for the processing circuit for an interval substantially longer than the duration of each pulse in the series of pulses.
摘要翻译： 一种通信接收机，包括用于接收调制的载波信号并检测其中的一个或多个控制音调的处理电路;脉冲发生器电路，耦合到所述处理电路并且可操作地产生用于间歇地渲染所述处理电路的一系列脉冲，以及解码器电路耦合 到处理电路并且响应于控制音调或音调以在其输出处产生控制信号，脉冲发生器电路被耦合到解码器电路的输出并且响应于其对控制信号的应用以提供连续的电源电压 对于处理电路，其间隔大大长于该脉冲串中每个脉冲的持续时间。
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公开(公告)号：US3513399A
公开(公告)日：1970-05-19
申请号：US3513399D
申请日：1967-10-17
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/027
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公开(公告)号：US3867700A
公开(公告)日：1975-02-18
申请号：US41781773
申请日：1973-11-21
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
摘要： The system includes a transmitter in which is provided a tone generator having a first oscillator to generate a first signal of a fixed frequency and a second oscillator which is variable to generate a second signal of a selected frequency. A multiplier receives the signals and provides a pair of tones having frequencies respectively equal to the sum of and difference between their frequencies. A switch may be provided so that both inputs to the multiplier are received from the variable frequency oscillator, in which case the output of the multiplier will be a single tone having a frequency twice that of the signal produced by the variable frequency oscillator. In either event, the tones are modulated on an RF wave. The system further comprises a receiver which has processing apparatus to receive incoming single side-band signals and convert them into IF components. A product detector in conjunction with an IF carrier source is operated to detect the IF signal and provide an intelligence message contained therein. A loudspeaker converts the intelligence message into audio information. An AM detector mixes the single side-band components to provide a signal having a frequency equal to the difference in frequencies between the tones in the incoming single side-band signals. A tuned circuit is responsive to a difference frequency signal of a predetermined frequency to provide an output signal to operate an electronic switch. In the presence of the output signal, the electronic switch produces an enabling signal to render the audio circuit operative and also to render the product detector operative and to render the AM detector inoperative. In the absence of the enabling signal, the audio circuit is inoperative as is the product detector but the AM detector is operative.
摘要翻译： 该系统包括发射机，其中提供有具有第一振荡器以产生固定频率的第一信号的音调发生器，以及第二振荡器，该第二振荡器可变以产生所选频率的第二信号。 乘法器接收信号并提供一对频率，其频率分别等于它们的频率之和和之差。 可以提供开关，使得从可变频率振荡器接收到乘法器的两个输入，在这种情况下，乘法器的输出将是具有由可变频率振荡器产生的信号的频率的两倍的单音。 在任一情况下，在RF波上调制音调。
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公开(公告)号：US3076939A
公开(公告)日：1963-02-05
申请号：US5409660
申请日：1960-09-06
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
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5.发明授权
公开(公告)号：US3619784A
公开(公告)日：1971-11-09
申请号：US3619784D
申请日：1970-03-03
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/188
摘要： There is disclosed an electronic switching device having a transmitter-energized position for coupling a source of operating voltage to a carrier-wave-generating circuit, a further switch coupled to the electronic switch having one position causing the electronic switch to be placed in its transmitter-energized position, a control circuit which provides energizing signals when the further switch is placed in its first position and then in its second position, which energizing signals cause a circuit to generate information for modulation on the carrier wave, a holding circuit which, in the presence of the energizing signals, maintains the energizing switch closed, despite placement of the further switch in its second position.
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公开(公告)号：US3597690A
公开(公告)日：1971-08-03
申请号：US3597690D
申请日：1967-09-11
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/027 , H03G3/005
摘要： A tone control circuit is in a receiver adapted to respond to a sequence of control tones alternately selected from a first group of tones in a first band of frequencies and a second group of tones in a second band of frequencies, wherein the two bands are separated by an intermediate band and wherein the time duration of the gap between adjacent tones in the sequence of tones is substantially zero, the tone control circuit including a filter device which is tuned to the frequencies of the control tones as they are received, a plurality of AND circuits corresponding in number to the control tones and respectively having one input coupled to the filter device and another input coupled to the preceding AND circuit so that each AND circuit is operative to produce an output only in the presence of a tone being passed by the filter and an output signal from the preceding AND circuit, the filter device being tuneable either manually or electronically via the outlet signals from the AND circuits.
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公开(公告)号：US3866124A
公开(公告)日：1975-02-11
申请号：US37225073
申请日：1973-06-21
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/188
摘要： The system includes a transmitter which transmits a sequence of tones. The receiver in the system has a processing circuit to detect the tones. The sequence of tones itself and also a delayed sequence of tones are applied to a mixer, which provides a mixed signal with a frequency representative of the difference between tones in the sequence.
摘要翻译： 该系统包括发送一系列音调的发射机。 系统中的接收机具有检测音调的处理电路。 音调序列本身以及延迟的音调序列被应用于混频器，该混频器提供具有表示序列中的音调之间的差异的频率的混合信号。
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公开(公告)号：US3631345A
公开(公告)日：1971-12-28
申请号：US3631345D
申请日：1969-10-07
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W8/245 , H04W88/022
摘要： The present invention is directed to a monitor circuit for use in a communication receiver including an input circuit and a detecting circuit having applied thereto a carrier signal carrying intelligence from a transmitter, the monitor circuit comprising a monitor input circuit having the input thereof coupled to the detecting circuit and an output, the monitor input circuit being responsive to the application of the carrier signal to the receiver for providing a control signal on the output thereof, a monitor switch connected to the output of the monitor input circuit and having a first inoperative condition and a second operative condition, and a monitor indicator coupled to the monitor switch, the monitor switch being responsive to the application thereto of the control signal for actuating the monitor switch from the first inoperative position thereof to the second operative position thereof to operate the monitor indicator.
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9.发明授权
公开(公告)号：US3613004A
公开(公告)日：1971-10-12
申请号：US3613004D
申请日：1964-03-09
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
CPC分类号： H04W88/188
摘要： 1. In a communication system for selectively transmitting carrier signals carrying a control tone and a call-indicator tone and intelligence from a transmitter to at least one selected receiver, the combination comprising a transmitter including a tone-generating circuit for generating a preselected control tone, means for generating a call-indicator tone, a modulating circuit for modulating the carrier signals in accordance with the control tone and the control-indicator tone and the intelligence to be transmitted, a transmitter output circuit coupled to said modulating circuit for transmitting the carrier signals including the control tone and the call-indicator tone and the intelligence to be transmitted, a receiver including an input circuit for receiving the signals from said transmitter, a detecting circuit coupled to said input circuit for detecting the control tone and the call-indicator tone and the intelligence in the signals, an audio circuit for converting the intelligence into sound waves, a coupling circuit coupling said detecting circuit to said audio circuit for coupling the intelligence and the control tone thereto, a squelch circuit coupled to said coupling circuit and operative in a first condition thereof to render said coupling circuit inoperative and operative in a second condition thereof to render said coupling circuit operative, a first control circuit coupled to said squelch circuit and responsive to the application of the carrier signals to said receiver for generating a first control signal, a second tone control circuit coupled to said squelch circuit and responsive to the application of the control tone to said receiver for generating a second control signal, and squelch circuit being responsive to the application thereto of said first and second control signals for actuating said squelch circuit from the first condition thereof into the second condition thereof to render said coupling circuit operative to pass the call-indicator tone therethrough, means for maintaining said squelch circuit in the second condition thereof until the removal of said first control signal therefrom, a third tone control circuit coupled to said coupling circuit and responsive to the application thereto of the call-indicator tone from said coupling circuit for producing an output from said third tone control circuit, and a call-indicator annunciator coupled to said third control circuit and actuated by the output therefrom, whereby said receiver is operative to operate said call-indicator annunciator upon the application thereto of both the control tone and the call-indicator tone from said transmitter, the removal of said first control signal from said squelch circuit changing said squelch circuit from the second condition thereof to the first condition thereof to render said coupling circuit inoperative. 16. A communication system comprising: TRANSMITTER FOR TRANSMITTING A SIGNAL INCLUDING A RADIO FREQUENCY CARRIER, MODULATING MEANS FOR MODULATING SAID CARRIER, CONTROL MEANS FOR INITIATING THE OPERATION OF SAID MODULATION MEANS FOR FIRST CAUSING SAID MODULATION MEANS TO MODULATE SAID CARRIER WITH A FIRST FREQUENCY SIGNAL FOR A TIME PERIOD OF PREDETERMINED LIMITED DURATION AND FOR IMMEDIATELY THEREAFTER CAUSING SAID MODULATION MEANS TO MODULATE SAID CARRIER WITH A DIFFERENT FREQUENCY SIGNAL TO THEREBY CAUSE SAID TRANSMITTER MEANS TO FIRST TRANSMIT SAID CARRIER MODULATED BY A BURST OF SAID FIRST FREQUENCY SIGNAL AND THEN TRANSMIT SAID CARRIER MODULATED BY A SECOND FREQUENCY SIGNAL, A RECEIVER INCLUDING MEANS FOR RECEIVING AND DEMODULATING THE SIGNAL TRANSMITTED FROM SAID TRANSMITTER TO PROVIDE AN OUTPUT INCLUDING SAID BURST OF SAID FIRST FREQUENCY SIGNAL FOLLOWED BY SAID SECOND FREQUENCY SIGNAL, A NORMALLY OPERATIVE FIRST DECODING CIRCUIT MEANS AND A NORMALLY INOPERATIVE SECOND DECODING CIRCUIT MEANS EACH CONNECTED TO BE SUPPLIED WITH SAID OUTPUT AND A UTILIZATION CIRCUIT MEANS CONTROLLED BY SAID SECOND DECODING CIRCUIT MEANS, SAID FIRST DECODING CIRCUIT MEANS HAVING MEANS RESPONSIVE TO SAID BURST OF SAID FIRST FREQUENCY SIGNAL IN THE OUTPUT FROM SAID RECEIVER FOR RENDERING SAID SECOND DECODING CIRCUIT OPERATIVE FOR A TIME PERIOD OF PREDETERMINED LIMITED DURATION OVERLAPPING THE TIME DURING WHICH SAID OUTPUT INCLUDES SAID SECOND FREQUENCY SIGNAL, SAID SECOND DECODING CIRCUIT MEANS HAVING MEANS RESPONSIVE TO SAID SECOND FREQUENCY SIGNAL IN THE OUTPUT OF SAID RECEIVER FOR CAUSING ENERGIZATION OF SAID UTILIZATION CIRCUIT MEANS.
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公开(公告)号：US2525745A
公开(公告)日：1950-10-10
申请号：US75752047
申请日：1947-06-27
申请人： WYCOFF KEITH H
发明人： WYCOFF KEITH H
IPC分类号： A61J11/00
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