会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 63. 发明授权
    • Method and device for frequency hopping communication by changing a
carrier frequency
    • 通过改变载波频率进行跳频通信的方法和装置
    • US6148020A
    • 2000-11-14
    • US816785
    • 1997-03-19
    • Tetsuichi Emi
    • Tetsuichi Emi
    • H04B1/713H04B1/7156H04B7/26H04B27/30
    • H04B1/7156H04B1/713H04B7/2621H04B2001/71563
    • A receiver block comprises a receiver circuit, a down-converter, a mixer, a modulator circuit, a decoding circuit, a synchronization circuit, a spread code control unit, and a frequency synthesizer. No synchronization holding circuit is needed. MSFK and PSK are used as a primary modulation. Synchronization is initially acquired by repeatedly mixing a part of the frequency hopping code sequence. Synchronization is improved during a period arranged separately from data communication periods. Before data transmission, the primary modulation components are fixed and transmitted for two code periods. The time changes in phases attributed to secondary modulation components will be known. After this, the primary modulation components are found.
    • 接收器块包括接收器电路,下变频器,混频器,调制器电路,解码电路,同步电路,扩展码控制单元和频率合成器。 不需要同步保持电路。 MSFK和PSK被用作一次调制。 最初通过重复混合一部分跳频码序列获得同步。 在与数据通信周期分开设置的时段期间改进了同步。 在数据传输之前,一次调制分量固定并传输两个码周期。 归因于二次调制分量的相位的时间变化将是已知的。 之后,发现一次调制组件。
    • 65. 发明授权
    • Automatic transmission power level control method in a frequency hopping
communication system
    • 跳频通信系统中的自动发射功率电平控制方法
    • US6115408A
    • 2000-09-05
    • US54877
    • 1998-04-03
    • Alon GendelOren EliezerDan Michael
    • Alon GendelOren EliezerDan Michael
    • H04B1/713H04B1/715H04B7/005H04B7/26H04L12/56H04L27/30H04B15/00H04J1/00H04K1/00
    • H04W52/42H04B1/713H04B1/715H04B7/2621H04W52/20H04B2001/7154H04W12/10H04W24/00
    • The present invention is an apparatus and method thereof for performing frequency hopping communication with another party over a subset of hopping frequencies from available frequencies. The spectrum is arranged into a plurality of segments, with each segment corresponding to a subset of the spectrum of frequencies, preferably a contiguous subset of the spectrum. The apparatus includes a communication device for communicating with another party. The communication device receives data over a used segment from a plurality of the segments and signal strength data indicating a current reception power level for the hopping frequency from the other party. A processing unit analyzes the received data to determine an occurrence or non-occurrence of an error over the used segment and notifies the other party to modify the current transmission power level for that used segment according to the occurrence or non-occurrence of an error, via said communication means. Through such information exchange, the other party can independently control and optimize the transmission power level for each used segment, e.g., to a minimum transmission power level at which no error has occurred.
    • 本发明是一种用于在来自可用频率的跳频的子集上与另一方进行跳频通信的装置和方法。 频谱被布置成多个段,其中每个段对应于频谱频谱的子集,优选地是频谱的连续子集。 该装置包括用于与另一方进行通信的通信装置。 通信设备从多个段接收使用的段的数据,并且指示来自另一方的跳频的当前接收功率电平的信号强度数据。 处理单元分析接收到的数据以确定所使用的段的错误的发生或不发生,并且根据错误的发生或不发生通知另一方修改该使用段的当前发送功率电平, 通过所述通信装置。 通过这样的信息交换,另一方可以独立地控制和优化每个使用的段的发射功率电平,例如到没有发生错误的最小发射功率电平。
    • 69. 发明授权
    • Mobile communication system using base station frequency correction
scheme
    • 移动通信系统采用基站频率校正方案
    • US5826197A
    • 1998-10-20
    • US605065
    • 1996-03-06
    • Kiyohito NagataTeruya FujiiKatsunori HamadaKazuhiko KakinumaMasaaki YoshimiTatsuaki Wakabayashi
    • Kiyohito NagataTeruya FujiiKatsunori HamadaKazuhiko KakinumaMasaaki YoshimiTatsuaki Wakabayashi
    • H03J1/00H04B1/3822H04B1/40H04B7/208H04B7/26H04W24/00H04W88/02H04W88/08H04W92/20H04B7/00
    • H04W88/08H03J1/0008H04B1/403H04B7/2621H04W24/00H04W88/02H04B7/208
    • A mobile communication system having a high precision frequency base station device with a high precision frequency generator, and the other low precision frequency base station device with a low precision frequency generator which receives transmission waves from the high precision frequency base station device using a transmission frequency in a prescribed frequency precision, and carries out transmission and reception by controlling transmission and reception frequencies of own station in accordance with the frequency precision of the received transmission waves. It is also fine to provide a mobile station device for a mobile station which receives the transmission waves from the high precision frequency base station device, controls a reference frequency to be a reference for transmission and reception frequencies of own station in accordance with the frequency precision of the received transmission waves, and carries out transmission and reception with respect to a base station using transmission and reception frequencies according to the controlled reference frequency, and make the low precision frequency base station device to receive the transmission waves from the mobile station device carrying out transmission and reception using the transmission and reception frequencies according to the controlled reference frequency, control a reference frequency to be a reference for transmission and reception frequencies of own station in accordance with the frequency precision of the received transmission waves, and carry out transmission and reception with respect to the mobile station using transmission and reception frequencies according to the controlled reference frequency. (FIG. 1)
    • PCT No.PCT / JP95 / 01353 Sec。 371日期:1996年3月5日 102(e)1996年3月5日PCT PCT。1995年7月6日PCT公布。 第WO96 / 01545号公报 日期1996年1月18日具有高精度频率发生器的高精度频率基站装置的移动通信系统和具有低精度频率发生器的低精度频率基站装置,其接收来自高精度频率基站的传输波 设备以规定的频率精度使用发送频率,并且根据接收的发送波的频率精度来控制本台的发送和接收频率来进行发送和接收。 提供从高精度频率基站装置接收发送波的移动台的移动站装置,根据频率精度,将参考频率控制为本台站的发送和接收频率的基准 的接收发送波,并且使用根据受控基准频率的发送和接收频率对基站进行发送和接收,并且使低精度频率基站装置从携带有移动台的装置接收发送波 根据受控参考频率使用发送和接收频率进行发送和接收,根据接收到的发送波的频率精度,将参考频率控制为本台站的发送和接收频率的基准,并进行发送和 接收 根据受控参考频率使用发送和接收频率的移动台。 (图。1)
    • 70. 发明授权
    • Cellular specialized mobile radio system
    • 蜂窝专用移动无线电系统
    • US5697052A
    • 1997-12-09
    • US498510
    • 1995-07-05
    • James E. Treatch
    • James E. Treatch
    • H04B7/26H04W16/24H04B7/14
    • H04B7/2621H04B7/1555H04W16/24
    • An SMR repeater is made agile by adding a microprocessor controlled frequency selection circuit to enable the repeater to operate on any one of several available frequencies in a band. For dispatch service, the output of the repeater is switched to a power amplifier feeding an omni-directional antenna. The repeater scans several frequencies sequentially. If a signal is detected, scanning is halted to provide repeater service, after which scanning is resumed. The frequency agile repeater is coupled to an antenna system having a narrow beam which can be steered electronically. A control computer scans the azimuth of the beam. The computer divides a service area into a plurality of cells extending radially from the antenna system and assigns channels as needed to service a subscriber. More than one cell can be on the same frequency without interference. The microprocessor includes a table in memory of call signs corresponding to particular transmission frequencies and causes the repeater to transmit the appropriate call sign when transmitting at a particular frequency.
    • 通过添加微处理器控制的频率选择电路以使中继器能够在频带中的几个可用频率中的任何一个上操作,使得SMR中继器变得敏捷。 对于调度服务,中继器的输出切换到馈送全向天线的功率放大器。 中继器依次扫描多个频率。 如果检测到信号,则停止扫描以提供中继器服务,之后恢复扫描。 频率敏捷转发器耦合到具有可以电子转向的窄波束的天线系统。 控制计算机扫描光束的方位角。 计算机将服务区域划分成从天线系统径向延伸的多个小区,并根据需要分配信道来为用户服务。 多个单元可以在相同的频率上没有干扰。 微处理器包括与特定传输频率相对应的呼叫符号存储器中的表格,并且当以特定频率发送时,使得中继器发送适当的呼号。