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    • 1. 发明授权
    • Method for channel adaptive detecting/equalizing
    • 通道自适应检测/均衡方法
    • US5375143A
    • 1994-12-20
    • US985474
    • 1992-12-03
    • Henry L. KazeckiSteven H. GoodeDonald W. DennisJames C. BakerKevin L. BaumBruce D. Mueller
    • Henry L. KazeckiSteven H. GoodeDonald W. DennisJames C. BakerKevin L. BaumBruce D. Mueller
    • H04B7/005H04L27/22H03H7/30
    • H04B7/005H04L27/22
    • In a communications device, two coherent detection algorithms (102 and 103), one of which has a decision feedback equalizer (103), and a detector selection algorithm (104) are used to dynamically select a detector depending on whether delay spread distortion is present. First the correlation of the detector without the equalizer (102) is measured. If this correlation is greater than a predetermined threshold, the data from that detector (102) is used by the communications device. If the correlation is less than the threshold, the correlation of the detector with the equalizer (103) is measured. If this is less than the correlation of the detector without the equalizer (102), the data from the detector without the equalizer (102) is used, otherwise the data is taken from the equalizer (103). In any case, if the detector without the equalizer is used, the detector with the equalizer is turned off.
    • 在通信设备中,使用两个相干检测算法(102和103),其中之一具有判决反馈均衡器(103)和检测器选择算法(104),以根据是否存在延迟扩展失真来动态地选择检测器 。 首先测量没有均衡器(102)的检测器的相关性。 如果该相关性大于预定阈值,则来自该检测器(102)的数据由通信设备使用。 如果相关性小于阈值,则测量检测器与均衡器(103)的相关性。 如果这小于没有均衡器(102)的检测器的相关性,则使用来自没有均衡器(102)的检测器的数据,否则数据取自均衡器(103)。 在任何情况下,如果使用没有均衡器的检测器,则使用均衡器的检测器关闭。
    • 6. 发明授权
    • Time division multiplex system suited for burst analog transmission
    • 时分复用系统适用于突发模拟传输
    • US4930126A
    • 1990-05-29
    • US362634
    • 1989-06-05
    • Henry L. KazeckiJames C. Baker
    • Henry L. KazeckiJames C. Baker
    • H04B1/66H04B14/06
    • H04B1/662H04B14/064
    • The transmission and reception of burst analog signals, such a voice signal, over a TDM system is improved according to the present invention by minimizing discontinuities between the signal at the end of its time slot in one frame relative to the beginning signal at its next time slot in the following TDM frame. In the TDM transmitter, stored digital information transmitted during its time slot is reprocessed during the preceding time slot in the next frame in order to maintain magnitude continuity. In the TDM receiver, the feedback signal to an analog to digital conversion circuit is switched during non-active time slots to follow data being clocked out of a digital storage element at a frame rate such that the data clocked out preceding the next active time slot will correspond to the data present at the end of the preceding active time slot.
    • 根据本发明,改进了通过TDM系统的突发模拟信号(例如语音信号)的发送和接收,通过最小化其帧中相对于起始信号在其下一时间的一帧结束时的信号之间的不连续性 在以下TDM帧中的时隙。 在TDM发射机中,在其时隙期间发送的存储的数字信息在下一帧的前一时隙内重新处理,以便保持大小连续性。 在TDM接收机中,在非有效时隙期间切换到模数转换电路的反馈信号,以跟随数据以帧速率从数字存储元件输出的数据,使得在下一活动时隙之前计时的数据 将对应于在前一活动时隙结束时存在的数据。
    • 8. 发明授权
    • Apparatus and method for recovering a time-varying signal using multiple
sampling points
    • 使用多个采样点恢复时变信号的装置和方法
    • US5241545A
    • 1993-08-31
    • US769068
    • 1991-09-30
    • Henry L. KazeckiJames C. Baker
    • Henry L. KazeckiJames C. Baker
    • H04Q7/38H04J3/00H04L7/04H04L7/10H04L27/22H04L27/227
    • H04L27/22H04L27/2275H04L7/042H04L7/10
    • The present invention presents an apparatus and method for recovering symbols in a data packet (101) transmitted to a receiver from a remote signal source (204) in a time-varying channel using multiple sampling points. In a digital cellular radiotelephone TDMA system, the receiver (202) performs a complex correlation on the desired slot sync word (DSSW) and the coded digital verification color code (CDVCC) in the data packet (101), and on the adjacent slot sync word (ASSW) in an adjacent data packet (102) to produce a first, second and third optimum sampling point, respectively. The data packet (101) is divided into four regions (A, B, C and D). The symbols in each region (A, B, C and D) are serially recovered using one or more of the multiple sampling points depending on the quality of the sampling point adjacent to each region (A, B, C and D).
    • 本发明提供一种用于在使用多个采样点的时变信道中从远程信号源(204)发送到接收机的数据分组(101)中恢复符号的装置和方法。 在数字蜂窝无线电话TDMA系统中,接收机(202)对数据分组(101)中的所需时隙同步字(DSSW)和编码数字验证色码(CDVCC)以及相邻时隙同步 字(ASSW)在相邻数据包(102)中分别产生第一,第二和第三最佳采样点。 数据包(101)被分成四个区域(A,B,C和D)。 每个区域(A,B,C和D)中的符号根据与每个区域(A,B,C和D)相邻的采样点的质量,使用多个采样点中的一个或多个来连续恢复。
    • 10. 发明授权
    • Coiled tubing hanger
    • 卷管衣架
    • US5727631A
    • 1998-03-17
    • US614433
    • 1996-03-12
    • Dwight BakerJames C. Baker
    • Dwight BakerJames C. Baker
    • E21B19/22E21B33/04E21B19/10
    • E21B19/22E21B33/0422
    • A coiled tubing hanger including a hanger bowl, a slip bowl supported in the hanger body, a plurality of slip segments disposed in the slip bowl so as to be movable between a retracted position wherein the tubular member is able to pass through the coiled tubing hanger and an extended position wherein a serrated surface of the slip segments engages the coiled tubing and forces the slip segments along the slip bowl so as to wedge the slip segments between the slip bowl and the coiled tubing to hold the coiled tubing. The slip segments are biased in the retracted position with a pair of slip retaining rings and the slip segments are moved between the retracted portion and the extended position with a plurality of spring-loaded pins disposed through the hanger body and engagable against the outer side of the slip segments such that the slip segments are disposed in the extended position when the pins are urged inwardly and such that the slip segments are biased in the retracted position when the pins are urged outwardly.
    • 一种连续油管悬挂器,包括衣架碗,支撑在衣架主体中的滑动碗,设置在滑动碗中的多个滑动部分,以便能够在缩回位置之间移动,其中管状构件能够穿过连续油管衣架 以及延伸位置,其中滑动段的锯齿形表面接合连续油管并且迫使滑动部分沿着滑动碗,以便将滑动部分楔在滑动碗和连续油管之间以保持连续油管。 滑动片段在缩回位置被一对滑动保持环偏置,并且滑动部分在缩回部分和延伸位置之间移动,并且多个弹簧加载的销穿过衣架主体并且可抵靠在 滑动部分使得当销被向内推动时滑动部分设置在伸出位置,并且当销被向外推动时,滑动部分被偏压在缩回位置。