专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5557653A Headset for hands-free wireless telephone 失效
标题翻译：耳机为免提无线电话
公开(公告)号：US5557653A
公开(公告)日：1996-09-17
申请号：US97881
申请日：1993-07-27
申请人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
发明人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
IPC分类号： H04B1/38 , H04M1/60 , H04M11/00
CPC分类号： H04M1/6058 , H04B1/38
摘要： A wireless telephone using an RF receiver unit and an RF transmitter unit and having a removable headset, the telephone and headset particularly suitable for applications where the RF transmitter unit is switched on and off at a frequency less than twenty kilohertz. The wireless telephone is coupled to the headset using a conventional stereo plug and jack. A headset detect logic signal is generated from the speaker audio line. A microphone current detect logic signal is generated from the microphone audio line. A digital logic circuit, preferably including a microprocessor, monitors the headset detect logic signal and microphone current detect logic signals and generates a programmed response to the headset detect logic signal. The programmed response reduces audible noise to the headset user, generates a ringing signal on the speaker audio line when an incoming call is received and allows the headset user to answer incoming calls, and place outgoing calls while touching only the headset. The wireless telephone and headset include circuitry to reject RF noise and circuitry to attenuate RF noise passed into the wireless telephone by a long multi-conductor wire coupling the headset to the wireless telephone.
摘要翻译：一种使用RF接收器单元和RF发射器单元并具有可移动耳机的无线电话，该电话和耳机特别适用于RF发射器单元以小于二十千赫兹的频率被接通和断开的应用。无线电话使用传统的立体声插头和插孔耦合到耳机。从扬声器音频线产生耳机检测逻辑信号。从麦克风音频线产生麦克风电流检测逻辑信号。优选地包括微处理器的数字逻辑电路监视耳机检测逻辑信号和麦克风电流检测逻辑信号，并产生对耳机检测逻辑信号的编程响应。编程的响应减少耳机用户的可听见的噪音，当接收到来电时，会在扬声器音频线路上产生振铃信号，并允许耳机用户接听来电，并在仅触摸耳机时拨打电话。无线电话和耳机包括拒绝RF噪声的电路和用于衰减通过将耳机连接到无线电话的长的多导线来传送到无线电话中的RF噪声的电路。

2. 发明授权

US5794163A Headset for hands-free wireless telephone 失效
公开(公告)号：US5794163A
公开(公告)日：1998-08-11
申请号：US482895
申请日：1995-06-07
申请人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
发明人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
IPC分类号： H04B1/38 , H04M1/60 , H04Q7/32
CPC分类号： H04M1/6058 , H04B1/38
摘要： A wireless telephone using an RF receiver unit and an RF transmitter unit and having a removable headset, the telephone and headset particularly suitable for applications where the RF transmitter unit is switched on and off at a frequency less than twenty kilohertz. The wireless telephone is coupled to the headset using a conventional stereo plug and jack. A headset detect logic signal is generated from the speaker audio line. A microphone current detect logic signal is generated from the microphone audio line. A digital logic circuit, preferably including a microprocessor, monitors the headset detect logic signal and microphone current detect logic signals and generates a programmed response to the headset detect logic signal. The programmed response reduces audible noise to the headset user, generates a ringing signal on the speaker audio line when an incoming call is received and allows the headset user to answer incoming calls, and place outgoing calls while touching only the headset. The wireless telephone and headset include circuitry to reject RF noise and circuitry to attenuate RF noise passed into the wireless telephone by a long multi-conductor wire coupling the headset to the wireless telephone.

3. 发明授权

US5596638A Headset for hands-free wireless telephone 失效
标题翻译：耳机为免提无线电话
公开(公告)号：US5596638A
公开(公告)日：1997-01-21
申请号：US475020
申请日：1995-06-06
申请人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
发明人： Graeme S. Paterson , Gary L. Bliss , Mark R. Boyd
IPC分类号： H04B1/38 , H04M1/60 , H04M1/00
CPC分类号： H04M1/6058 , H04B1/38
摘要： A wireless telephone using an RF receiver unit and an RF transmitter unit and having a removable headset, the telephone and headset particularly suitable for applications where the RF transmitter unit is switched on and off at a frequency less than twenty kilohertz. The wireless telephone is coupled to the headset using a conventional stereo plug and jack. A headset detect logic signal is generated from the speaker audio line. A microphone current detect logic signal is generated from the microphone audio line. A digital logic circuit, preferably including a microprocessor, monitors the headset detect logic signal and microphone current detect logic signals and generates a programmed response to the headset detect logic signal. The programmed response reduces audible noise to the headset user, generates a ringing signal on the speaker audio line when an incoming call is received and allows the headset user to answer incoming calls, and place outgoing calls while touching only the headset. The wireless telephone and headset include circuitry to reject RF noise and circuitry to attenuate RF noise passed into the wireless telephone by a long multi-conductor wire coupling the headset to the wireless telephone.
摘要翻译：一种使用RF接收器单元和RF发射器单元并具有可移动耳机的无线电话，该电话和耳机特别适用于RF发射器单元以小于二十千赫兹的频率被接通和断开的应用。无线电话使用传统的立体声插头和插孔耦合到耳机。从扬声器音频线产生耳机检测逻辑信号。从麦克风音频线产生麦克风电流检测逻辑信号。优选地包括微处理器的数字逻辑电路监视耳机检测逻辑信号和麦克风电流检测逻辑信号，并产生对耳机检测逻辑信号的编程响应。编程的响应减少耳机用户的可听见的噪音，当接收到来电时，会在扬声器音频线路上产生振铃信号，并允许耳机用户接听来电，并在仅触摸耳机时拨打电话。无线电话和耳机包括拒绝RF噪声的电路和用于衰减通过将耳机连接到无线电话的长的多导线来传送到无线电话中的RF噪声的电路。

4. 发明授权

US5334952A Fast settling phase locked loop 失效
标题翻译：快速稳定锁相环
公开(公告)号：US5334952A
公开(公告)日：1994-08-02
申请号：US38147
申请日：1993-03-29
申请人： Steven L. Maddy , Graeme S. Paterson
发明人： Steven L. Maddy , Graeme S. Paterson
IPC分类号： H03L7/189 , H03L7/199 , H03L7/08 , H03L7/085 , H03L7/10 , H03L7/16
CPC分类号： H03L7/189 , H03L7/199
摘要： A phase locked loop including a switch between a phase detector output and a VCO input to open the PLL during a frequency change is provided. While the PLL is open, an analog error correction signal is generated by sampling any residual error coming from the phase detector, and generating the analog error correction signal to counter the residual error. Once analog error correction signal is available, the switch is closed and the error correction signal is added to the phase detector output and the PLL is allowed to settle to an optimized frequency.
摘要翻译：提供了一种锁相环，其包括在频率变化期间在相位检测器输出和VCO输入之间切换以打开PLL的开关。当PLL打开时，通过对来自相位检测器的任何残余误差进行采样，产生模拟错误校正信号，并产生模拟误差校正信号以抵消残余误差。一旦模拟错误纠正信号可用，开关闭合，纠错信号加到相位检测器输出端，允许PLL稳定到最佳频率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式