公开(公告)号：US5594432A

公开(公告)日：1997-01-14

申请号：US564468

申请日：1995-11-29

申请人： David C. Oliva ,  Max W. Rogers

发明人： David C. Oliva ,  Max W. Rogers

IPC分类号： G08G1/0965 ,  G08G1/0967 ,  G08G1/16 ,  G08G1/09

CPC分类号： G08G1/096758 ,  G08G1/0965 ,  G08G1/096775 ,  G08G1/16 ,  G08G1/162

摘要： A traffic information warning system for conveying traffic information from a traffic advisory site to a vehicle is disclosed. The traffic warning site comprises an emergency vehicle, a roadside hazard, or the like. The system comprises a transmitter adapted for placement at the advisory site and a receiver adapted for placement at the vehicle. The transmitter includes a first oscillator for transmitting a first carrier signal having a first carrier frequency and a second oscillator for transmitting a second carrier signal having a second carrier frequency. The first carrier frequency and the second carrier frequency are spaced apart by a predetermined frequency difference. The transmitter also includes a modulator for modulating both carrier signals with an identical modulating signal reflective of a traffic situation. The receiver includes scanning circuitry, in the form of a microprocessor, for scanning across a predetermined frequency range to detect carrier signals separated by the predetermined frequency difference and a demodulator for retrieving a first retrieved modulating signal about the first carrier signal and a second retrieved modulating signal about the second carrier signal. The receiver also uses the microprocessor to compare the first retrieved modulating signal to the second retrieved modulating signal and to determine whether the first and second retrieved modulating signal are identical. Additionally, the receiver includes an announcing device for announcing a message regarding the traffic situation.

摘要翻译： 公开了一种用于将交通信息从交通咨询站点传送到车辆的交通信息警报系统。 交通警示站包括紧急车辆，路边危险物等。 该系统包括适于放置在咨询地点的发射器和适于放置在车辆处的接收器。 发射机包括用于发射具有第一载波频率的第一载波信号的第一振荡器和用于发射具有第二载波频率的第二载波信号的第二振荡器。 第一载波频率和第二载波频率间隔开预定的频率差。 发射机还包括调制器，用于调制具有反映交通状况的相同调制信号的两个载波信号。 接收机包括微处理器形式的扫描电路，用于跨预定频率范围进行扫描，以检测由预定频率差分开的载波信号;以及解调器，用于检索关于第一载波信号的第一检索调制信号和第二检索调制信号 关于第二载波信号的信号。 接收机还使用微处理器将第一检索到的调制信号与第二检索调制信号进行比较，并确定第一和第二检索调制信号是否相同。 此外，接收机包括用于通知关于交通状况的消息的通知装置。

公开(公告)号：US4876709A

公开(公告)日：1989-10-24

申请号：US240702

申请日：1988-09-08

申请人： Max W. Rogers ,  Daniel R. Skinner

发明人： Max W. Rogers ,  Daniel R. Skinner

IPC分类号： H01Q1/22 ,  H01Q1/24 ,  H01Q1/44 ,  H04M1/02 ,  H04Q7/32

CPC分类号： H04M1/0202 ,  H01Q1/243

摘要： An antenna internally contained within a housing of a cordless telephone is configured generally as a plate disposed opposite the earphone transducer, and away from the user's face in position for normal use. The antenna is disposed to lie generally vertically, and is counterpoised against a generally vertically disposed circuit board. Configuring the antenna generally as a plate and placing it outboard away from the user's face minimizes detuning effects during normal handling in use. Optional side extensions to the plate increase the antenna capacitance. An optional counterpoising shield may be interposed between the receiver-transducer and the antenna plate to further minimize detuning effects. Mode switches are disposed in a position on the handset remote from the antenna to further minimize detuning effects during switching operations. A similar antenna may be disposed within the cordless telephone base unit with the antenna disposed remote from the surface on which the base unit is mounted, and further having its associated mode switch disposed at a location remote from the antenna so as to minimize detuning effects from proximity to metallic surfaces and mode switching.

摘要翻译： 内部容纳在无绳电话的壳体内的天线通常被配置为与耳机换能器相对设置的板，并且远离用户的脸部正常使用。 天线被设置为大致垂直地放置，并且与大致垂直布置的电路板相平衡。 通常将天线配置为平板，并将其放置在远离使用者脸部的位置，使正常使用过程中的失谐效应最小化。 板的可选侧面扩展增加了天线电容。 在接收器 - 换能器和天线板之间可以插入可选的平衡屏蔽件，以进一步最小化失谐效应。 模式开关设置在远离天线的手机上的位置，以进一步最小化开关操作期间的失谐效应。 类似的天线可以设置在无绳电话基座单元内，其中天线布置成远离安装有基座单元的表面，并且还具有设置在远离天线的位置处的相关联的模式开关，以便最小化从 靠近金属表面和模式切换。

公开(公告)号：US5351284A

公开(公告)日：1994-09-27

申请号：US823177

申请日：1992-01-21

申请人： Max W. Rogers

发明人： Max W. Rogers

IPC分类号： H01Q1/24 ,  H01Q1/46 ,  H04B1/38 ,  H04M11/00 ,  H04H1/02

CPC分类号： H01Q1/46 ,  H01Q1/243 ,  H04B1/3833

摘要： A base unit antenna for a cordless telephone system where the cordless telephone system comprises a base unit coupled via wires contained in a telephone cord to a telephone distribution system and a handset coupled to the base unit by a duplex radio communication link. The base unit includes a base unit antenna for transmitting and receiving the duplex radio communication with the handset. The antenna is preferably integrally contained in the telephone cord, but spaced from the telephone wires therein distribution system.

摘要翻译： 一种用于无绳电话系统的基本单元天线，其中无绳电话系统包括通过电话线中包含的电线耦合到电话分配系统的基座单元和通过双工无线电通信链路耦合到基本单元的手机。 基本单元包括用于发送和接收与手机的双工无线电通信的基本单元天线。 天线优选地一体地容纳在电话线中，但是与其中的电话线分布在分配系统中。