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    • 1. 发明申请
    • NON-RESONANT AND QUASI-RESONANT SYSTEM FOR WIRELESS POWER TRANSMISSION TO MULTIPLE RECEIVERS
    • 用于多个接收器的无线电力传输的非共振和准谐振系统
    • US20120169136A1
    • 2012-07-05
    • US13329924
    • 2011-12-19
    • Gianpaolo LisiGerard G. SocciAli DjabbariKosha Mahmodieh
    • Gianpaolo LisiGerard G. SocciAli DjabbariKosha Mahmodieh
    • H01F38/14
    • H04B5/0037H02J5/005H02J7/025H02J50/12H02J50/40H04B5/0081
    • A wireless power transfer system includes: a non-resonant transmitter, or a transmitter with a resonant circuit; and a non-resonant receiver, or a receiver with a resonant circuit. In some implementations, a transmitter with a resonant circuit is operated away from its resonance frequency. In some implementations, a receiver with a resonant circuit is operated away from the transmitter resonance frequency and/or the transmitter operating frequency. In some implementations, the selection of receiver resonance frequency is based on receiver power requirements. Thus, wireless power transfer may be accomplished by operating away from resonance in a quasi-resonant or non-resonant mode, and further may be accomplished using a non-resonant transmitter and/or a non-resonant receiver. Effective power transfer may also be achieved between a transmitter and multiple receivers. A combination of resonant and non-resonant transmitter and receiver(s) may be used for power transfer.
    • 无线电力传输系统包括:非谐振发射器或具有谐振电路的发射器; 和非谐振接收器,或具有谐振电路的接收器。 在一些实施方式中,具有谐振电路的发射机的作用远离其谐振频率。 在一些实施方式中,具有谐振电路的接收器远离发射机谐振频率和/或发射机工作频率操作。 在一些实现中,接收机谐振频率的选择基于接收机功率要求。 因此,无线功率传输可以通过远离共振或非谐振模式的谐振来实现,并且还可以使用非谐振发射器和/或非谐振接收器来实现。 也可以在发射机和多个接收机之间实现有效的功率传输。 谐振和非谐振发射器和接收器的组合可用于功率传输。
    • 3. 发明申请
    • TRANSMITTER AND RECEIVER TUNING IN A WIRELESS CHARGING SYSTEM
    • 无线充电系统中的发射机和接收机调谐
    • US20120169133A1
    • 2012-07-05
    • US13150868
    • 2011-06-01
    • Gianpaolo LisiGerard G. SocciAli KiaeiKosha MahmodiehAli Djabbari
    • Gianpaolo LisiGerard G. SocciAli KiaeiKosha MahmodiehAli Djabbari
    • H01F38/14
    • H02J50/12H02J5/005H02J7/025H02J50/40H02J50/60H02J50/80
    • A transmitter includes an alternating current power source with tunable parameters. A tunable parameter may be capacitance, inductance, or frequency.A metric related to power transfer from the transmitter through a coil is used to determine an amount to modify a parameter. One metric is equal to |Vs|·|Is|·cos(φ), where |Vs| is magnitude of the power source voltage, |Is| is magnitude of the power source current, and φ is phase difference between the power source voltage and power source current. Another metric is equal to |Vs|·|Is|·cos(φ)·(Vcoil_ref/Vcoil), where |Vs| is magnitude of the power source voltage, |Is| is magnitude of the power source current, φ is phase difference between the power source voltage and power source current, Vcoil_ref is a normalization value, and Vcoil is voltage across the coil.The transmitter may further include a phase tracking and adjustment loop; for example, a phase-locked loop (PLL).
    • 发射机包括具有可调谐参数的交流电源。 可调参数可以是电容,电感或频率。 与发射机通过线圈的功率传输相关的度量用于确定修改参数的量。 一个度量等于| Vs |·| Is |·cos(&phgr;),其中| Vs | 是电源电压的大小,| Is | 是电源电流的大小,&phgr; 是电源电压和电源电流之间的相位差。 另一个度量值等于| Vs |·| Is |·cos(&phgr;)·(Vcoil_ref / Vcoil),其中| Vs | 是电源电压的大小,| Is | 是电源电流的大小,&phgr; 是电源电压和电源电流之间的相位差,Vcoil_ref是归一化值,Vcoil是线圈两端的电压。 发射机还可以包括相位跟踪和调节回路; 例如,锁相环(PLL)。
    • 4. 发明授权
    • Audio error mitigation technique for a TDMA communication system
    • 用于TDMA通信系统的音频误差减轻技术
    • US5802076A
    • 1998-09-01
    • US653531
    • 1996-05-24
    • David L. WeigandCharles J. MalekGerard G. SocciFatih UnalS. Dilip
    • David L. WeigandCharles J. MalekGerard G. SocciFatih UnalS. Dilip
    • H04L1/00H04L1/20
    • H04L1/0057H04L1/20
    • An audio error mitigation technique for a TDMA communication system is disclosed. An audio error is assumed if any one of the following criteria is met: a detection of a CRC error in the control data or audio data within a slot; the received signal strength is below a certain threshold; or, the detection of an invalid code word, such as an all zero nibble. If either of the criteria is met, and the slot contains audio data, an error mitigation routine is performed. In one embodiment, the error mitigation routine replaces the faulty burst with the previous non-faulty burst. In another mitigation routine, any dv/dt spikes in the faulty burst are detected and smoothed by averaging nearby samples. In one embodiment, both mitigation routines are selectable in the TDMA system.
    • 公开了一种用于TDMA通信系统的音频纠错技术。 如果满足以下条件之一,则假设音频错误:检测控制数据中的CRC错误或时隙内的音频数据; 接收信号强度低于一定阈值; 或者检测无效代码字,例如全零字节。 如果符合任一条件,并且插槽包含音频数据,则执行错误减轻程序。 在一个实施例中,误差减轻程序用先前的非故障突发替换故障突发。 在另一个缓解程序中,通过对附近的采样进行平均,检测和平滑故障突发中的任何dv / dt峰值。 在一个实施例中,两个缓解例程都可在TDMA系统中选择。
    • 5. 发明授权
    • Equalization filter compensating for distortion in a surface acoustic
wave device
    • 均衡滤波器补偿声表面波器件的失真
    • US5768317A
    • 1998-06-16
    • US436678
    • 1995-05-08
    • Daniel E. FagueGerard G. SocciBenny Madsen
    • Daniel E. FagueGerard G. SocciBenny Madsen
    • H04L27/20H04L27/36H04L25/49
    • H04L27/2032H04L27/367
    • The preferred embodiment improves the modulation accuracy of a communication system having a surface acoustic wave (SAW) device filtering a modulated signal. An equalizer filter is used to predistort the signal to be filtered so as to equalize the SAW filter response. In the preferred approach, the equalizer also provides baseband filtering. In this particular embodiment, the original baseband filter impulse response is convolved with the inverse of the actual SAW filter impulse response. The resulting values provide the coefficients for a digital filter (i.e., a modified baseband filter) forming part of a DQPSK modem. When the signal filtered by the modified baseband filter is then up-converted and filtered by the SAW filter, the predistortion caused by the modified baseband filter equalizes the SAW filter distortion, and only the modulation errors of the original baseband filter occur. In other embodiments, the equalizer filter characteristics are derived solely from the SAW filter impulse response or frequency response to equalize any distortion resulting from the SAW filter. In the preferred embodiment, the coefficients for the digital filter are stored in a ROM lookup table.
    • 优选实施例提高具有对调制信号进行滤波的声表面波(SAW)装置的通信系统的调制精度。 均衡器滤波器用于预测要滤波的信号,以便均衡SAW滤波器响应。 在优选的方法中,均衡器还提供基带滤波。 在该特定实施例中,原始基带滤波器脉冲响应与实际SAW滤波器脉冲响应的倒数一起卷积。 得到的值为构成DQPSK调制解调器的一部分的数字滤波器(即,修改的基带滤波器)提供系数。 当被修改的基带滤波器滤波的信号被SAW滤波器上变频和滤波时,由修改的基带滤波器引起的预失真均衡了SAW滤波器失真,并且仅发生原始基带滤波器的调制误差。 在其他实施例中,均衡器滤波器特性仅从SAW滤波器脉冲响应或频率响应导出,以均衡由SAW滤波器产生的任何失真。 在优选实施例中,数字滤波器的系数存储在ROM查找表中。
    • 7. 发明授权
    • Non-resonant and quasi-resonant system for wireless power transmission to multiple receivers
    • 用于无线电力传输到多个接收器的非谐振和准谐振系统
    • US09088307B2
    • 2015-07-21
    • US13329924
    • 2011-12-19
    • Gianpaolo LisiGerard G. SocciAli DjabbariKosha Mahmodieh
    • Gianpaolo LisiGerard G. SocciAli DjabbariKosha Mahmodieh
    • H01F27/42H04B5/00H02J5/00H02J7/02
    • H04B5/0037H02J5/005H02J7/025H02J50/12H02J50/40H04B5/0081
    • A wireless power transfer system includes: a non-resonant transmitter, or a transmitter with a resonant circuit; and a non-resonant receiver, or a receiver with a resonant circuit. In some implementations, a transmitter with a resonant circuit is operated away from its resonance frequency. In some implementations, a receiver with a resonant circuit is operated away from the transmitter resonance frequency and/or the transmitter operating frequency. In some implementations, the selection of receiver resonance frequency is based on receiver power requirements. Thus, wireless power transfer may be accomplished by operating away from resonance in a quasi-resonant or non-resonant mode, and further may be accomplished using a non-resonant transmitter and/or a non-resonant receiver. Effective power transfer may also be achieved between a transmitter and multiple receivers. A combination of resonant and non-resonant transmitter and receiver(s) may be used for power transfer.
    • 无线电力传输系统包括:非谐振发射器或具有谐振电路的发射器; 和非谐振接收器,或具有谐振电路的接收器。 在一些实施方式中,具有谐振电路的发射机的作用远离其谐振频率。 在一些实施方式中,具有谐振电路的接收器远离发射机谐振频率和/或发射机工作频率操作。 在一些实现中,接收机谐振频率的选择基于接收机功率要求。 因此,无线功率传输可以通过远离共振或非谐振模式的谐振来实现,并且还可以使用非谐振发射器和/或非谐振接收器来实现。 也可以在发射机和多个接收机之间实现有效的功率传输。 谐振和非谐振发射器和接收器的组合可用于功率传输。
    • 8. 发明授权
    • Seamless handover in a cordless TDMA system
    • 无绳TDMA系统中的无缝切换
    • US5822313A
    • 1998-10-13
    • US655355
    • 1996-05-24
    • Charles J. MalekDavid L. WeigandDennis M. RoseGerard G. Socci
    • Charles J. MalekDavid L. WeigandDennis M. RoseGerard G. Socci
    • H04L1/00H04W28/04H04W36/18H04W72/04H04J3/16
    • H04W36/023H04L1/0061
    • A technique is disclosed for allowing a seamless handover between base stations in a TDMA controller as a telephone handset is transported from one base station's area to another. The disclosed circuitry enables the TDMA controller to assess the quality of the handover before switching to the new base station. When it is determined that a handover operation is to commence, transmissions are made in the original slot time and a handover slot time within the same frame. Also during the same frame, data is received at two separate slot times. Only when it is determined that the data received in the handover slot time contains no transmission errors is the handover completed by then only transmitting on the handover slot transmit time and receiving on the handover slot receive time. In the preferred embodiment, it is determined whether the received data contains no transmission errors by detecting the CRC codes, the signal strength, and the existence of any invalid words.
    • 公开了一种用于在TDMA控制器中的基站之间进行无缝切换的技术,因为电话手机从一个基站的区域传送到另一个基站。 所公开的电路使得TDMA控制器能够在切换到新的基站之前评估切换的质量。 当确定切换操作开始时,在相同帧内的原始时隙时间和切换时隙时间进行传输。 同样在同一帧期间,在两个分开的时隙接收数据。 只有当确定在切换时隙时间中接收的数据不包含传输错误时,则仅通过切换时隙发送时间发送并且在切换时隙接收时间上接收完成的切换。 在优选实施例中,通过检测CRC码,信号强度和任何无效字的存在来确定接收的数据是否不包含传输错误。
    • 9. 发明授权
    • Inter-base synchronization technique for a TDMA communication system
    • TDMA通信系统的基站间同步技术
    • US5666366A
    • 1997-09-09
    • US655576
    • 1996-05-24
    • Charles J. MalekDavid L. WeigandDennis M. RoseGerard G. Socci
    • Charles J. MalekDavid L. WeigandDennis M. RoseGerard G. Socci
    • H04B7/26H04J3/06H04J3/07H04L7/04
    • H04L7/042H04B7/269H04J3/073H04B7/2693H04J3/0685
    • A synchronization method for synchronizing a plurality of base stations in a TDMA communication system is disclosed. The synchronization topology may be via dedicated hardwire, via any DSL from the PSTN, or via an ad-hoc RF synchronization technique. Slots containing data are arranged in frames and these frames are transmitted to the base stations, and received from the base stations, by wireless telephone handsets. Each of the slots in a frame have a guard field comprising a plurality of guard bits. The base stations derive frame sync pulses via the received Unique Word correlation detect. These derived frame sync pulses are ultimately synchronized with frame sync signals received from the master base station. The slave base stations are maintained in synchronization with the master base station by using a phase locked loop (DPLL) which adds or deletes a final bit in the guard field of a frame to either advance or delay the frame sync pulse generated within the slave base station as necessary to maintain synchronization between the frame sync pulses generated by the slave base station and the frame sync pulses generated by the master base station.
    • 公开了一种在TDMA通信系统中同步多个基站的同步方法。 同步拓扑可以经由专用硬线,经由来自PSTN的任何DSL,或经由ad-hoc RF同步技术。 包含数据的时隙被布置成帧,并且这些帧被发送到基站,并且通过无线电话手机从基站接收。 帧中的每个时隙具有包括多个保护位的保护字段。 基站通过接收的唯一字相关检测导出帧同步脉冲。 这些导出的帧同步脉冲最终与从主基站接收的帧同步信号同步。 从基站通过使用锁相环(DPLL)与主基站保持同步,该锁相环(DPLL)在帧的保护域中增加或删除最后一位,以提前或延迟在从基站内产生的帧同步脉冲 站,以保持由从基站产生的帧同步脉冲与由主基站产生的帧同步脉冲之间的同步。