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    • 52. 发明授权
    • Selection diversity system using decision feedback equalizer in digital
mobile telecommunication systems
    • 在数字移动电信系统中使用决策反馈均衡器的选择分集系统
    • US5455844A
    • 1995-10-03
    • US181197
    • 1994-01-13
    • Hiroyasu IshikawaHideo Kobayashi
    • Hiroyasu IshikawaHideo Kobayashi
    • H04B7/005H04B7/08H03H7/30H03D1/00H03D1/04
    • H04B7/082H04B7/005
    • A selection diversity system using a decision feedback equalizer which has excellent tracking ability performance and equalization ability performance for frequency selective fading and a diversity effect against Rayleight fading. In a selection diversity system using a decision feedback equalizer, a decision data symbol of the equalizer output of a branch in which an average estimation error over a plurality of symbols is minimum is selected and combined, and the selected decision data symbol is used to recalculate the estimation error of every decision feedback equalizer and the tap gain coefficient of the decision feedback equalizer is updated using the recalculated estimation error, thereby overcoming the step out by the integration of the estimation error and the random selection error which is caused by the selective combined diversity system.
    • 一种使用判决反馈均衡器的选择分集系统,其对于频率选择性衰落具有优异的跟踪能力性能和均衡能力性能以及对瑞利衰落的分集效应。 在使用判决反馈均衡器的选择分集系统中,选择并组合多个符号中的平均估计误差最小的分支的均衡器输出的判定数据符号,并且使用所选择的判定数据符号重新计算 使用重新计算的估计误差来更新每个判决反馈均衡器的估计误差和判定反馈均衡器的抽头增益系数,从而克服由选择性组合引起的估计误差和随机选择误差的积分 多样性系统。
    • 53. 发明授权
    • Transmission line switching apparatus including connected optical fibers
    • 包括连接的光纤的传输线路切换装置
    • US5436987A
    • 1995-07-25
    • US240581
    • 1994-05-10
    • Kazuhito SaitoMakoto SatoHideo Kobayashi
    • Kazuhito SaitoMakoto SatoHideo Kobayashi
    • G02B6/35G02B6/38G02B6/26B25J11/00G02B6/28
    • G02B6/3502G02B6/3817G02B6/3556G02B6/358G02B6/3582G02B6/3887G02B6/389G02B6/3897
    • A transmission line switching apparatus comprises an optical fiber connecting board for holding a plurality of first optical fibers, an optical fiber arranging board, arranged apart from the connecting board with a predetermined spacing between them in the horizontal direction, for holding a plurality of second optical fibers, and a robot for handling the second fibers. Each second optical fiber extends to the connecting board through the arranging board, and the distal end of the second optical fiber is detachably attached to the connecting board so as to be selectively connected to one of the first optical fibers. When the distal end of the second optical fiber is attached to the connecting board, the second optical fiber is laterally extended in a loosened state between the two boards. In this state, the entangled states of the second optical fibers near the two boards are sparser than that in the intermediate position between the two boards. Therefore, the robot can easily handle the second optical fiber.
    • 一种传输线路切换装置,包括:用于保持多个第一光纤的光纤连接板;光纤布置板,沿着水平方向以预定间隔布置在连接板上,用于保持多个第二光纤 纤维和用于处理第二纤维的机器人。 每个第二光纤通过布置板延伸到连接板,并且第二光纤的远端可拆卸地附接到连接板,以便选择性地连接到第一光纤中的一个。 当第二光纤的远端附接到连接板时,第二光纤在两个板之间的松动状态下横向延伸。 在这种状态下,两个板附近的第二光纤的纠缠状态比两个板之间的中间位置的缠结状态更加困难。 因此,机器人可以容易地处理第二光纤。
    • 55. 发明授权
    • Optical recording medium and optical recording method using the same
    • 光记录介质及使用其的光记录方法
    • US5341358A
    • 1994-08-23
    • US757058
    • 1991-09-09
    • Hideo KobayashiOsamu UenoKiichi Ueyanagi
    • Hideo KobayashiOsamu UenoKiichi Ueyanagi
    • B41M5/26G11B7/00G11B7/0045G11B7/0055G11B7/006G11B7/24G11B7/243
    • G11B7/006G11B7/00557
    • An optical recording medium having a layer of recording material provided on a substrate, the material having an optical property which is changed reversibly by means of light or heat, so that writing/reproducing or writing/reproducing/erasing of information is performed by using the reversible change of the optical property of the recording material layer. The recording material is composed of a plurality of elements and is capable of taking, as a melt state thereof, a selected one of a single phase state and a two-phase coexistent state. An optical recording method for performing writing/reproducing/erasing of information uses a reversible change of an optical property of the recording material layer by irradiating the recording material layer with a high-power light beam so as to melt it into a single phase state and then cooling the recording material layer so as to form a phase-changed portion corresponding to a recording state or an erasing state. The recording material layer is irradiated with a low-power light beam so as to be melted into a two-phase coexistence state and then cooled so as to form a phase-changed portion corresponding to an erasing state or a recording state.
    • 一种具有设置在基板上的记录材料层的光学记录介质,该材料具有通过光或热可逆地改变的光学特性,从而通过使用信息的写入/再现或写入/再现/擦除来执行信息的写/ 记录材料层的光学特性的可逆变化。 记录材料由多个元件组成,并且能够将熔融状态作为单相状态和两相共存状态中的一个选择。 用于执行信息的写入/再现/擦除的光学记录方法使用通过用高功率光束照射记录材料层来使记录材料层的光学特性的可逆变化,从而将其熔化成单相状态, 然后冷却记录材料层,以形成对应于记录状态或擦除状态的相变部分。 用低功率光束照射记录材料层,使其熔化成两相共存状态,然后冷却,形成与擦除状态或记录状态对应的相变部。
    • 60. 发明授权
    • Phase synchronization system
    • 相位同步系统
    • US4862104A
    • 1989-08-29
    • US296897
    • 1989-01-12
    • Takuro MurataniHideo KobayashiToshinari Kimura
    • Takuro MurataniHideo KobayashiToshinari Kimura
    • H03L7/081H03L7/087H03L7/10H04L7/033H04L27/227H04L27/38
    • H03L7/087H03L7/081
    • A phase synchronization circuit for processing a received signal, the phase of which is detected by a first reference carrier from a fixed oscillator and a second reference carrier orthogonal to the first reference carrier. Two baseband signals are thus obtained and sampled with a certain period. Converters convert these two signals into digital values. Phase and amplitude values at each sample point are obtained from these digital values orthogonal to each other. The frequency and phase differences between the received signal and each of the first and second reference carriers are estimated by an optimization method by utilization of pluralities of phase and amplitude data obtained with a fixed period of time. The voltage-controlled oscillator and the phase shifter are controlled with the estimated values for generating a recovered carrier of a phase synchronized with the received signal. A circuit is provided in which the hysteresis of frequency and phase differences are stored at the time of current estimation. The stored values and currently-estimated values are compared with each other. On the basis of the results of the comparison of these values, the received signal is analogized. The numbers of data samples for use in the estimation of the frequency and phase differences are made variable according to the result analogy, thereby achieving an optimum phase synchronization in accordance with the state of the received signal.
    • 一种用于处理接收信号的相位同步电路,其相位由来自固定振荡器的第一参考载波和与第一参考载波正交的第二参考载波检测。 从而获得两个基带信号并在一定周期内采样。 转换器将这两个信号转换为数字值。 从这些彼此正交的数字值获得每个采样点的相位和振幅值。 通过利用在固定时间段内获得的多个相位和幅度数据的优化方法来估计接收信号与第一和第二参考载波中的每一个之间的频率和相位差。 压控振荡器和移相器由用于产生与接收信号同步的相位的恢复载波的估计值来控制。 提供一种电路,其中在当前估计时存储频率和相位差的滞后。 将存储的值和当前估计值彼此进行比较。 基于这些值的比较结果,接收到的信号被类比。 根据结果​​类推,使用于估计频率和相位差的数据样本数量可变,从而根据接收信号的状态实现最佳相位同步。