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    • 2. 发明授权
    • Rotation drive apparatus
    • 旋转驱动装置
    • US6005749A
    • 1999-12-21
    • US35845
    • 1998-03-06
    • Hiroshi IkutaFumiharu SudoToru NakaharaMitsuhiro UenoYuji Shishido
    • Hiroshi IkutaFumiharu SudoToru NakaharaMitsuhiro UenoYuji Shishido
    • F16F15/36G01M1/36G11B25/04G11B33/08H02K15/16G11B17/02H02K5/24
    • G01M1/36F16F15/363G11B25/043G11B33/08H02K15/165
    • A magnet is provided which holds spherical balancers in the central portion of a rotor when the rotation of the rotor is stopped. When rotations of the rotor is started, a larger torque T.sub.0 is transmitted from the rotor to the balancers. Thus, the balancers quickly start rotating. When the rotor rotates at high speed, the centrifugal force separates the balancers from the magnet and moves the same to the outer wall portion of the rotor. At this time, a torque T.sub.0 which is transmitted from the rotor to the balancer is reduced so that the balancers are moved in the circumferential direction. Thus, the automatic aligning operation is performed. The number (n) of the balancers is made to be a value obtained by the following equation:n=180/.theta.+0.5 (all digits to the right of the decimal point are discarded)wherein .theta.: angle of balancer balls disposed in the outer portion, in which .theta.=2sin.sup.-1 {r/(R-r)}R: radius of movable spacer: radius of each balancer ball
    • 提供一种磁体,当转子的旋转停止时,磁体在转子的中心部分保持球形平衡器。 当转子的转动开始时,转矩越大,转矩越大,平衡器转速越大。 因此,平衡机迅速开始旋转。 当转子高速旋转时,离心力将平衡器与磁体分开并将其移动到转子的外壁部分。 此时,从转子传递到平衡器的转矩T0减小,使得平衡器沿圆周方向移动。 因此,执行自动对准操作。 平衡器的数量(n)为通过以下等式获得的值:n = 180 /θ+0.5(舍弃小数点右侧的所有数字)其中theta:平衡器球的角度位于 外部,其中θ= 2sin-1 {r /(Rr)} R:可移动空间的半径r:每个平衡球的半径
    • 6. 发明授权
    • Telephone apparatus for multiplexing digital speech samples and data
signals using variable rate speech coding
    • 使用可变速率语音编码来复用数字语音样本和数据信号的电话设备
    • US5754554A
    • 1998-05-19
    • US550106
    • 1995-10-30
    • Toru Nakahara
    • Toru Nakahara
    • H04M1/00H04B7/26H04J3/00H04J3/16H04J3/22H04M11/06H04Q7/38
    • H04M11/064H04J3/1682H04J3/22
    • In a mobile telephone set, a speech coder is provided for converting an analog speech signal to a digital speech signal. A voice activity sensor determining whether the analog speech signal is present or not. A storage level detector determines the amount of a data signal waiting for transmission from a non-telephonic communications apparatus. A switching control logic determines the rate for the speech coder according to the outputs of the voice activity sensor and the storage level detector. When the analog speech signal is present and the amount of the waiting data signal is zero, the data rate is set at a high rate and a digital speech signal from the speech coder is transmitted along with an indication of the high data rate. When the analog speech signal is present and the amount of the waiting data signal is non-zero, the data rate of the speech coder is set at a rate which is lower than the high data rate and is variable in accordance with the amount of the waiting data signal and the digital speech signal from the speech coder and the data signal from the non-telephonic communications apparatus are transmitted along with an indication of the variable data rate. When the analog speech signal is absent and the amount of the waiting data signal is non-zero, the data signal from the apparatus is exclusively transmitted.
    • 在移动电话机中,提供语音编码器,用于将模拟语音信号转换为数字语音信号。 确定模拟语音信号是否存在的语音活动传感器。 存储电平检测器确定等待从非电话通信设备发送的数据信号的量。 开关控制逻辑根据语音活动传感器和存储电平检测器的输出来确定语音编码器的速率。 当存在模拟语音信号并且等待数据信号的量为零时,数据速率被设置为高速率,并且来自语音编码器的数字语音信号连同高数据速率的指示一起发送。 当存在模拟语音信号并且等待数据信号的量不为零时,语音编码器的数据速率被设置为低于高数据速率的速率,并且可以根据 来自语音编码器的等待数据信号和数字语音信号以及来自非电话通信装置的数据信号与可变数据速率的指示一起发送。 当模拟语音信号不存在并且等待数据信号的量不为零时,来自该装置的数据信号是专门发送的。
    • 7. 发明授权
    • Digital cordless telephone system readily capable of setting up
    • 数字无绳电话系统容易设置
    • US5473668A
    • 1995-12-05
    • US278264
    • 1994-07-21
    • Toru Nakahara
    • Toru Nakahara
    • H04B7/26H04J3/06H04W88/08H04Q7/20H04J3/00
    • H04W88/08H04B7/269H04J3/0652
    • In a digital cordless telephone system including master and slave radio stations that are operable in response to first and second frame synchronization signals synchronized with each other to produce first and second TDMA signals in the form of radio signals, respectively, a timing signal whch is produced on the basis of the first frame synchronization signal by the master radio station is transmitted to the slave radio station through a signal line to synchronize the slave radio station with the master radio station and is received by the slave radio station after lapse of a time delay determined by a length of the signal line. The timing signal is delayed in the master radio station by a single period of the first frame synchronization signal to produce the first TDMA signal synchronized with the delayed timing signal while the timing signal received with the time delay by the slave radio station is timed by the second frame synchronization signal to produce an output synchronization signal synchronized with the second frame synchronization signal and to obtain the second TDMA signal timed by the output synchronization signal. As a result, the first and the second TDMA signals are produced at an instant coincident with each other. The timing signal may be a TDMA frame synchronization signal.
    • 在包括主和从无线电台的数字无绳电话系统中,分别响应于彼此同步的第一和第二帧同步信号可操作以产生无线电信号形式的第一和第二TDMA信号,产生定时信号 基于主无线电台的第一帧同步信号通过信号线被发送到从无线电站,以使从无线电台与主无线电站同步,并且在经过时间延迟之后被从无线电台接收 由信号线的长度决定。 定时信号在主无线电台中通过第一帧同步信号的单个周期被延迟,以产生与延迟定时信号同步的第一TDMA信号,而由从无线电台以时间延迟接收的定时信号由 第二帧同步信号,以产生与第二帧同步信号同步的输出同步信号,并获得由输出同步信号定时的第二TDMA信号。 结果,第一和第二TDMA信号在彼此重合的时刻产生。 定时信号可以是TDMA帧同步信号。