公开(公告)号：US4471168A

公开(公告)日：1984-09-11

申请号：US450420

申请日：1982-12-16

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H04M1/725 ,  H04Q7/04

CPC分类号： H04M1/72502

摘要： A wireless extension telephone system including a base unit connected to a telephone line and a remote extension unit. Included in both the base and extension units are a radio receiver and a radio transmitter. Also included in the remote unit is a bimodal tuned circuit operable as both a filter and as an oscillator.

摘要翻译： 一种无线分机电话系统，包括连接到电话线的基本单元和远程扩展单元。 基站和扩展单元都包括无线电接收机和无线电发射机。 还包括在远程单元中的是双模式调谐电路，其可操作为滤波器和振荡器。

公开(公告)号：US4469918A

公开(公告)日：1984-09-04

申请号：US450497

申请日：1983-03-23

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H04M1/725 ,  H04Q7/04

CPC分类号： H04M1/72502

摘要： A wireless extension telephone system including a base unit connected to a telephone line and a remote extension unit. Both base and remote units each include a radio receiver and a radio transmitter. The remote unit transmits tone signals of a first amplitude for line seizure and of a second amplitude for line pulsing in response to manually initiated dial pulses. A dial pulse detection circuit at the base unit differentiates between the two types of pulses breaking connections to the telephone line in response to incoming dial signals of the second amplitude.

摘要翻译： 一种无线分机电话系统，包括连接到电话线的基本单元和远程扩展单元。 基站和远程单元都包括无线电接收机和无线电发射机。 响应于手动启动的拨号脉冲，远程单元发送用于线路发送的第一幅度的音调信号和用于线路脉冲的第二幅度。 在基本单元处的拨号脉冲检测电路根据第二幅度的输入拨号信号来区分断开与电话线路的连接的两种类型的脉冲。

公开(公告)号：US5550865A

公开(公告)日：1996-08-27

申请号：US287194

申请日：1994-08-08

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H03C3/09 ,  H04B1/40 ,  H04L25/49 ,  H04L27/12 ,  H04L27/148 ,  H04L27/04

CPC分类号： H03C3/0975 ,  H04B1/40 ,  H04L25/4925 ,  H04L27/12 ,  H04L27/148

摘要： A full duplex data transceiver for transmitting and receiving trinary frequency-modulated ("FM") signals representing binary data includes separate transmit and receive antennas, and a single oscillator which serves as both the radio frequency ("RF") signal source for the transmitter and the local oscillator "LO") signal source for the receiver. During signal transmission, the oscillator output is frequency-modulated to provide a FM transmit signal to the transmit antenna. The oscillator output is frequency-modulated with binary transmit data by modulating an error feedback signal which serves as the control voltage for a voltage-controlled oscillator in a phase-lock-loop, thereby producing the FM transmit signal. During signal reception, the oscillator output, in the form of the transmitted FM signal, is received via the receive antenna along with a FM receive signal for mixing therewith to down-convert the FM receive signal. As part of the demodulation of the down-converted FM receive signal, the binary transmit data is subtracted out. The FM transmit and receive signals are trinary (f.sub.-P, f.sub.c, f.sub.+P) and represent encoded binary data. The center frequency f.sub.c corresponds to an absence of a binary data signal transition, the lower peak frequency f.sub.-P corresponds to a negative binary data signal transition and the upper peak frequency f.sub.+P corresponds to a positive binary data signal transition.

摘要翻译： 用于发送和接收代表二进制数据的三进制调频（“FM”）信号的全双工数据收发器包括单独的发射和接收天线，以及用作发射机的射频（“RF”）信号源的单个振荡器 和本地振荡器“LO”）信号源。 在信号传输期间，振荡器输出被调频以向发射天线提供FM发射信号。 振荡器输出通过调制作为锁相环中的压控振荡器的控制电压的误差反馈信号进行二进制发送数据的频率调制，从而产生FM发送信号。 在信号接收期间，经发送的FM信号形式的振荡器输出与FM接收信号一起经FM接收信号接收，以便与FM接收信号下变频。 作为对下变频FM接收信号的解调的一部分，二进制发送数据被减去。 FM发送和接收信号是三进制（f-P，fc，f + P），并表示编码的二进制数据。 中心频率fc对应于二进制数据信号转换的缺失，较低的峰值频率f-P对应于负的二进制数据信号转换，而上峰值频率f + P对应于正的二进制数据信号转换。

公开(公告)号：US4471166A

公开(公告)日：1984-09-11

申请号：US450408

申请日：1982-12-16

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H04M1/725 ,  H04Q7/04

CPC分类号： H04M1/72502

摘要： A wireless extension telephone system including a base unit connected to a telephone line and a remote extension unit. Both base and remote units each include a radio receiver and a radio transmitter. Also included in the remote unit is a modulator connected to said remote unit radio transmitter and circuitry limiting the amplitude of the modulated signals produced by said transmitter. A dialing circuit connected to said modulator causes the amplitude of each outgoing dial pulse to be transmitted at a level substantially higher than when no dial pulses are present.

摘要翻译： 一种无线分机电话系统，包括连接到电话线的基本单元和远程扩展单元。 基站和远程单元都包括无线电接收机和无线电发射机。 还包括在远程单元中的是调制器，其连接到所述远程单元无线电发射机和限制由所述发射机产生的调制信号的幅度的电路。 连接到所述调制器的拨号电路使得每个输出拨号脉冲的振幅以比不存在拨号脉冲的程度更高的电平传输。

公开(公告)号：US4964138A

公开(公告)日：1990-10-16

申请号：US271614

申请日：1988-11-15

申请人： Greg A. Nease ,  Peter K. Cripps

发明人： Greg A. Nease ,  Peter K. Cripps

IPC分类号： G06F17/15 ,  H04B1/707 ,  H04B1/709

CPC分类号： H04B1/709 ,  H04B1/70718

摘要： A spread spectrum communications system includes an encoder for differentially encoding a spread spectrum spreading code sequence in accordance with an input data signal. Each chip of the spreading code sequence is inverted, or not inverted, relative to the polarity of a corresponding chip of the spreading code sequence a fixed time delay previously, depending on whether the input data is a logic one or zero, respectively. At the receiver, the data is recovered in a differential data decoder wherein the presently received chip of the spread spectrum signal and a corresponding previously received chip of spread spectrum signal, received a fixed time delay previously, are compared one chip at a time. Since it is the spreading code sequence that is differentially encoded and differentially decoded, there is no need for a synchronized code sequence generator at the receiver, and data synchronization is achieved after one cycle time of the received spread spectrum spreading code sequence has elapsed.

公开(公告)号：US4468538A

公开(公告)日：1984-08-28

申请号：US450405

申请日：1982-12-16

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H04M1/725 ,  H04Q7/04

CPC分类号： H04M1/72502

摘要： A wireless extension telephone system including a base unit connected to a telephone line and a remote extension unit. Both base and remote units each include a radio receiver and a radio transmitter. Also included in the remote unit is a modulator connected to the radio transmitter and circuitry limiting the amplitude of modulated signals produced by said transmitter. A dialing circuit connected to the modulator causes the amplitude of each outgoing signal representing a dial pulse to be transmitted at a level substantially higher than when no dial pulses are present. At the base unit a dial pulse detection circuit differentiates between the modulated signals received by the associated radio receiver, providing connections to the telephone line in response to signals of a first amplitude and breaking the line in response to each received pulse of a higher level amplitude.

摘要翻译： 一种无线分机电话系统，包括连接到电话线的基本单元和远程扩展单元。 基站和远程单元都包括无线电接收机和无线电发射机。 远程单元中还包括连接到无线电发射机的调制器和限制由所述发射机产生的调制信号幅度的电路。 连接到调制器的拨号电路使得表示拨号脉冲的每个输出信号的振幅以比不存在拨号脉冲的程度更高的电平发送。 在基本单元处，拨号脉冲检测电路区分由相关联的无线电接收机接收的调制信号，响应于第一幅度的信号提供与电话线路的连接，并响应于每个接收到的较高电平幅度的接收脉冲而断开该线路 。

公开(公告)号：US5838730A

公开(公告)日：1998-11-17

申请号：US439083

申请日：1995-05-11

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H04B1/713 ,  H04B1/7143 ,  H04B1/7156 ,  H04L12/28 ,  H04L27/10

CPC分类号： H04B1/7143 ,  H04B1/713 ,  H04B1/7156 ,  H04W36/08 ,  H04W76/02 ,  H04B2001/71563 ,  H04W24/00 ,  H04W28/26 ,  H04W36/00 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W74/004 ,  H04W74/006 ,  H04W74/0808 ,  H04W8/005 ,  H04W84/12 ,  H04W88/08

摘要： A wireless local area network includes a radio transmitter/receiver for transmitting and receiving in accordance with the FCC rules for the ISM band. The receiver/transmitter supports spread spectrum frequency hopping in the 2.4 GHz ISM band and can be tuned to one of e.g. 82 different frequencies spaced at 1 MHz intervals. The radio transmitter/receiver is a low cost, low power, small size unit located on a printed circuit board in a PCMCIA form factor. Third order mixers are used in combination with a switched prescaler for a low cost and compact frequency control system capable of rapid switching of the radio between transmitting and receiving functions. No special shielding is needed between the frequency control circuitry and the receiver IF circuitry.

摘要翻译： 无线局域网包括用于根据用于ISM频带的FCC规则进行发送和接收的无线电发射机/接收机。 接收机/发射机支持在2.4GHz ISM频带中的扩频跳频，并且可以调谐到例如 82个不同的频率间隔1 MHz。 无线电发射机/接收机是一种低成本，低功耗，小尺寸的单元，位于PCMCIA外形尺寸的印刷电路板上。 三阶混频器与切换预分频器结合使用，可实现低成本和紧凑的频率控制系统，能够在发射和接收功能之间快速切换无线电。 在频率控制电路和接收机IF电路之间不需要特殊的屏蔽。

公开(公告)号：US5493583A

公开(公告)日：1996-02-20

申请号：US406775

申请日：1996-03-17

申请人： Peter K. Cripps

发明人： Peter K. Cripps

IPC分类号： H03C3/09 ,  H04B1/40 ,  H04L25/49 ,  H04L27/12 ,  H04L27/148 ,  H04B1/38 ,  H04L5/16

CPC分类号： H03C3/0975 ,  H04B1/40 ,  H04L25/4925 ,  H04L27/12 ,  H04L27/148

摘要： A full duplex data transceiver for transmitting and receiving frequency-modulated ("FM") signals representing binary data includes separate transmit and receive antennas, and a single oscillator which serves as both the radio frequency ("RF") signal source for the transmitter and the local oscillator ("LO") signal source for the receiver. During signal transmission, the oscillator output is frequency-modulated to provide a FM transmit signal to the transmit antenna. The oscillator output is frequency-modulated with binary transmit data by modulating an error feedback signal which serves as the control voltage for a voltage-controlled oscillator in a phase-lock-loop, thereby producing the FM transmit signal. During signal reception, the oscillator output, in the form of the transmitted FM signal, is received via the receive antenna along with a FM receive signal for mixing therewith to down-convert the FM receive signal. As part of the demodulation of the down-converted FM receive signal, the binary transmit data is subtracted out.

摘要翻译： 用于发送和接收表示二进制数据的调频（“FM”）信号的全双工数据收发器包括单独的发射和接收天线以及用作发射机的射频（“RF”）信号源的单个振荡器， 接收机的本地振荡器（“LO”）信号源。 在信号传输期间，振荡器输出被调频以向发射天线提供FM发射信号。 振荡器输出通过调制作为锁相环中的压控振荡器的控制电压的误差反馈信号进行二进制发送数据的频率调制，从而产生FM发送信号。 在信号接收期间，经发送的FM信号形式的振荡器输出与FM接收信号一起经FM接收信号接收，以便与FM接收信号下变频。 作为对下变频FM接收信号的解调的一部分，二进制发送数据被减去。

公开(公告)号：US5444737A

公开(公告)日：1995-08-22

申请号：US150401

申请日：1993-11-10

申请人： Peter K. Cripps ,  Tomany Szilagyi

发明人： Peter K. Cripps ,  Tomany Szilagyi

IPC分类号： H03C3/09 ,  H04B1/40 ,  H04L25/49 ,  H04L27/12 ,  H04L27/14 ,  H04L27/148 ,  H04B1/38 ,  H04L5/16

CPC分类号： H03C3/0975 ,  H04B1/40 ,  H04L25/4925 ,  H04L27/12 ,  H04L27/148

摘要： A full duplex data transceiver for transmitting and receiving trinary frequency-modulated ("FM") signals representing binary data includes at least one antenna and a single oscillator which serves as both the radio frequency ("RF") signal source for the transmitter and the local oscillator ("LO") signal source for the receiver. During signal transmission, the oscillator output is frequency-modulated to provide a FM transmit signal to the antenna. The oscillator output is frequency-modulated with binary transmit data by modulating an error feedback signal which serves as the control voltage for a voltage-controlled oscillator in a phase-lock-loop, thereby producing the FM transmit signal. During signal reception, the oscillator output, in the form of the transmitted FM signal, is attenuated and coupled into the receiver along with a FM receive signal from the antenna, or alternatively is received via a separate receive antenna along with the FM receive signal, for mixing therewith to down-convert the FM receive signal. As part of the demodulation of the down-converted FM receive signal, the binary transmit data is subtracted out. The FM transmit and receive signals are trinary (f.sub.-P, f.sub.C, f.sub.+P) and represent encoded binary data. The center frequency f.sub.C corresponds to an absence of a binary data signal transition, the lower peak frequency f.sub.-P corresponds to a negative binary data signal transition and the upper peak frequency f.sub.+P corresponds to a positive binary data signal transition.

摘要翻译： 用于发送和接收表示二进制数据的三进制调频（“FM”）信号的全双工数据收发器包括至少一个天线和单个振荡器，其用作发射机的射频（“RF”）信号源和 接收机的本地振荡器（“LO”）信号源。 在信号传输期间，振荡器输出被调频以向天线提供FM发射信号。 振荡器输出通过调制作为锁相环中的压控振荡器的控制电压的误差反馈信号进行二进制发送数据的频率调制，从而产生FM发送信号。 在信号接收期间，以发射的FM信号的形式的振荡器输出与来自天线的FM接收信号一起被衰减并耦合到接收机中，或者可选地经由与FM接收信号一起分开的接收天线接收， 用于与其混合以对FM接收信号进行下变频。 作为对下变频FM接收信号的解调的一部分，二进制发送数据被减去。 FM发送和接收信号是三进制（f-P，fC，f + P），并且表示编码的二进制数据。 中心频率fC对应于二进制数据信号转换的缺失，较低的峰值频率f-P对应于负的二进制数据信号转换，而上峰值频率f + P对应于正的二进制数据信号转换。

公开(公告)号：US4930140A

公开(公告)日：1990-05-29

申请号：US297412

申请日：1989-01-13

申请人： Peter K. Cripps ,  Michael A. Plotnick

发明人： Peter K. Cripps ,  Michael A. Plotnick

IPC分类号： H04J13/16

CPC分类号： H04J13/16

摘要： A code division multiplex system for use in a spread spectrum communication system utilizes selectable length spread spectrum spreading code sequences. At the encoder, one of a pluraluty of a spread spectrum spreading code sequences having a given fixed length is selected for differential encoding in accordance with the input data to be transmitted. At the receiver correlator, a selectable length differential decoder is set to be responsive to a spread spectrum spreading code sequence having a length substantially equal to the length of the encoded spread spectrum spreading code sequence.