Multilevel modulator comprising a compact error correcting code
producing unit
    1.
    发明授权
    Multilevel modulator comprising a compact error correcting code producing unit 失效
    多级调制器,包括紧凑的纠错码产生单元

    公开(公告)号:US4716385A

    公开(公告)日:1987-12-29

    申请号:US889804

    申请日:1986-07-23

    摘要: In a multilevel modulator for use in modulating an input digital signal of N levels into a multilevel modulated signal, the input digital signal is converted by a code converting unit into a major converted signal for the input digital signal and a minor converted signal corresponding to the major converted signal. The major converted signal is rearranged into groups each of which consists of a predetermined number of levels smaller than N and which is produced in a time division fashion together with with minor converted signal. A signal producing unit processes each group to produce a Lee-error correcting code sequence. Alternatively, major and minor converted signals are produced on quadrature-phase amplitude modulation of a circular signal arrangement of N-levels to divide the circular signal arrangement into a square signal arrangement and the remaining signal arrangement. In a counterpart multilevel demodulator, an inverse operation is carried out to reproduce the input digital signal.

    摘要翻译: 在用于将N电平的输入数字信号调制成多电平调制信号的多电平调制器中,输入数字信号由码转换单元转换成用于输入数字信号的主转换信号和对应于 主要转换信号。 主转换信号被重新排列成组,每个组由预定数量的小于N的电平组成,并且与次转换信号一起以时分方式产生。 信号产生单元处理每个组以产生一个错误纠错码序列。 或者,主要和次要转换的信号在N电平的圆形信号布置的正交相位幅度调制上产生,以将圆形信号布置分成平方信号布置和剩余的信号布置。 在对应的多电平解调器中,执行逆运算以再现输入数字信号。

    Transversal equalizer
    2.
    发明授权
    Transversal equalizer 失效
    横向均衡器

    公开(公告)号:US4757516A

    公开(公告)日:1988-07-12

    申请号:US911937

    申请日:1986-09-26

    CPC分类号: H04L27/01

    摘要: An equalizer is provided with a branching device for branching a digitally modulated signal into two outputs. A series of weighting devices weights one of the outputs of the branching means, and a series of second weighting devices equal to or fewer in number than the first weighting devices weights the remaining output of the branching means. Combining elements equal in number to the first weighting devices combine two or three inputs, and delaying means fewer in number than the combining elements are interconnected with the combining elements in a sequential, alternating manner. The outputs of the first weighting devices are respectively applied to the combining elements while those of the second weighting devices are respectively applied to selected ones of the combining elements. The invention provides a construction where the number of taps of the equalizer may be easily increased without creating the necessity of combining circuits having an increased number of inputs.

    摘要翻译: 均衡器设置有用于将数字调制信号分支为两个输出的分支装置。 一系列加权装置对分支装置的输出之一进行加权,并且等于或少于第一加权装置的数量的一系列第二加权装置对分支装置的剩余输出进行加权。 组合数量相等于第一加权装置的元件组合两个或三个输入,并且延迟装置的数量少于组合元件以顺序,交替的方式与组合元件互连。 第一加权装置的输出分别施加到组合元件,而第二加权装置的输出分别施加到组合元件中的选定元件。 本发明提供了一种结构,其中可以容易地增加均衡器的抽头的数量,而不需要组合具有增加的输入数量的电路。

    DNA fragment encoding tumor cell growth inhibitors
    4.
    发明授权
    DNA fragment encoding tumor cell growth inhibitors 失效
    编码肿瘤细胞生长抑制剂的DNA片段

    公开(公告)号:US5523391A

    公开(公告)日:1996-06-04

    申请号:US244309

    申请日:1994-05-25

    摘要: DNA fragments encoding a tumor cell growth inhibitors and having a nucleotide sequence shown by formula (1) below, which are produced by preparing cDNA library from mRNA of the established 3T3 cell-derived cell line, amplifying various DNA fragments considered to encode the tumor cell growth inhibitors by the PCR method, analyzing the nucleotide sequences of these DNA fragments and determining the nucleotide sequences of the DNA fragments encoding the inhibitors: ##STR1## wherein X represents TTC TTT CTA or TTC (SEQ ID NO:1 or SEQ ID NO:2).

    摘要翻译: PCT No.PCT / JP92 / 01580 Sec。 371日期:1994年5月25日 102(e)日期1994年5月25日PCT提交1992年12月3日PCT公布。 公开号WO93 / 11233 日期:1993年6月10日。编码肿瘤细胞生长抑制剂并具有下述式(1)所示核苷酸序列的DNA片段,其通过从建立的3T3细胞来源的细胞系的mRNA制备cDNA文库产生,扩增各种DNA 被认为通过PCR方法编码肿瘤细胞生长抑制剂的片段,分析这些DNA片段的核苷酸序列并确定编码抑制剂的DNA片段的核苷酸序列: TGTGAGCACX。 。 。 。 。 。 。 。 。 。 。 (1)其中X表示TTC TTT CTA或TTC(SEQ ID NO:1或SEQ ID NO:2)。

    Transgenic non-human mammal
    5.
    发明授权
    Transgenic non-human mammal 失效
    转基因非人哺乳动物

    公开(公告)号:US07550649B2

    公开(公告)日:2009-06-23

    申请号:US10577302

    申请日:2004-10-28

    IPC分类号: A01K67/027 A01K67/00

    摘要: An object of the present invention is to provide a model animal of Parkinson's disease comprising an α-synuclein gene introduced therein. The present invention provides a transgenic non-human mammal or a portion thereof, wherein an α-synuclein gene is introduced and the gene is expressed in neurons, and the number of dopamine-producing neurons in the substantial nigra is significantly decreased as compared with that of a wild-type animal.

    摘要翻译: 本发明的目的是提供一种帕金森病的模型动物,其中包含引入其中的α-突触核蛋白基因。 本发明提供了一种转基因非人哺乳动物或其部分,其中引入α-突触核蛋白基因并且该基因在神经元中表达,并且与该方法相比,大部分黑质中产生多巴胺的神经元的数量显着降低 的野生型动物。

    Transgenic non-human mammal
    6.
    发明申请
    Transgenic non-human mammal 失效
    转基因非人哺乳动物

    公开(公告)号:US20070192879A1

    公开(公告)日:2007-08-16

    申请号:US10577302

    申请日:2004-10-28

    IPC分类号: A01K67/027

    摘要: An object of the present invention is to provide a model animal of Parkinson's disease comprising an α-synuclein gene introduced therein. The present invention provides a transgenic non-human mammal or a portion thereof, wherein an α-synuclein gene is introduced and the gene is expressed in neurons, and the number of dopamine-producing neurons in the substantial nigra is significantly decreased as compared with that of a wild-type animal.

    摘要翻译: 本发明的目的是提供一种帕金森病的模型动物,其中包含引入其中的α-突触核蛋白基因。 本发明提供了一种转基因非人哺乳动物或其部分,其中引入α-突触核蛋白基因并且该基因在神经元中表达,并且与该方法相比,大部分黑质中产生多巴胺的神经元的数量显着降低 的野生型动物。

    Synchronization circuit for digital communication systems
    8.
    发明授权
    Synchronization circuit for digital communication systems 失效
    数字通讯系统同步电路

    公开(公告)号:US4779275A

    公开(公告)日:1988-10-18

    申请号:US846451

    申请日:1986-03-31

    申请人: Makoto Yoshimoto

    发明人: Makoto Yoshimoto

    IPC分类号: H04L7/04 G06F11/10 H04L7/06

    CPC分类号: H04L7/048

    摘要: In a digital communication system, a sync word is generated at intervals at the transmitting end and appended to a data bit stream having redundant bits generated by an error correction encoder. The sync word indicates the position of the redundant bits in the data bit stream. At a receiving end of the system, a syndrome generator is responsive to the data bit stream for deriving therefrom a syndrome and applying it to the error corrector to cause it to correct error which may exist in the data bit stream. A word synchronizer detects the sync word contained in one of the syndromes and causes the syndrome generator to establish synchronism with the data bit stream. The word synchronizer includes a detector for detecting a prescribed set of binary states in the syndromes which indicate that there is no errors in the data bit stream and causing the syndrome generator to generate a syndrome synchronously with data words in the data bit stream.

    摘要翻译: 在数字通信系统中,在发送端以间隔生成同步字,并附加到具有由纠错编码器生成的冗余位的数据比特流。 同步字表示数据位流中冗余位的位置。 在系统的接收端,校正子发生器响应于数据比特流,从而从中导出校正子并将其应用于误差校正器,以使其校正可能存在于数据比特流中的错误。 字同步器检测包含在一个校正子中的同步字,并使校正子发生器与数据比特流建立同步。 词同步器包括检测器,用于检测校正子中的规定的二进制状态集合,其指示数据比特流中没有错误,并使校正子发生器与数据比特流中的数据字同步地产生校正子。

    Channel quality monitoring apparatus
    9.
    发明授权
    Channel quality monitoring apparatus 失效
    通道质量监测仪

    公开(公告)号:US4688207A

    公开(公告)日:1987-08-18

    申请号:US789486

    申请日:1985-10-21

    申请人: Makoto Yoshimoto

    发明人: Makoto Yoshimoto

    CPC分类号: H04L1/24

    摘要: A channel quality monitoring apparatus provided in terminal equipment of digital radio communication system comprises a syndrome generator circuit responsive to a digital multiplexed signal of a receiving signal, a signal converter circuit for converting an error-corrected digital multiplexed signal into a digital multiplexed signal with which a predetermined parity detection is possible, a parity detector circuit for effecting a parity detection of the digital multiplexed signal from the signal converter circuit, and computing circuitry configured as an error rate detector circuit responsive to outputs from the syndrome generator means and the parity detector circuit. When occurrence of code error detected on the basis of the syndrome continues for the duration more than a predetermined time period, the computing circuitry is operative to compute an error rate of the receiving digital multiplexed signal on the basis of the syndrome. In contrast, when occurrence of code error detected continues for the duration equal to or less than the predetermined time period, the computing circuitry is operative to compute an error rate of the receiving digital multiplexed signal on the basis of the output from the parity detector circuit. Thus, this apparatus provides an improved detection accuracy of a channel error rate in the equipment of receiving and demodulating system.

    摘要翻译: 在数字无线电通信系统的终端设备中提供的信道质量监测装置包括响应于接收信号的数字多路复用信号的校正子发生器电路,用于将经纠错的数字多路复用信号转换为数字多路复用信号的信号转换器电路, 可以进行预定的奇偶校验检测,用于进行来自信号转换器电路的数字多路复用信号的奇偶校验检测的奇偶校验检测器电路,以及响应于来自校正子发生器装置和奇偶校验检测器电路的输出的配置为错误率检测器电路的计算电路 。 当基于校正子检测到的代码错误的发生持续超过预定时间段的持续时间时,计算电路可操作以基于综合征计算接收数字多路复用信号的错误率。 相反,当检测到的代码错误的发生持续等于或小于预定时间段的持续时间时,计算电路可操作以基于奇偶检测器电路的输出来计算接收数字多路复用信号的错误率 。 因此,该装置在接收和解调系统的设备中提供了改进的信道误码率的检测精度。