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    • 3. 发明授权
    • PNPN Light sensitive semiconductor switch with phototransistor connected
across inner base regions
    • PNPN光敏半导体开关,光电晶体管连接在内部基极区域
    • US4489340A
    • 1984-12-18
    • US228935
    • 1981-01-28
    • Jun UedaHaruo MoriKazuo HagimuraHirokazu TsukadaKotaro Kato
    • Jun UedaHaruo MoriKazuo HagimuraHirokazu TsukadaKotaro Kato
    • H01L27/144H01L31/111H04Q3/52H01L29/74
    • H01L31/1113H01L27/1443H04Q3/521
    • A PNPN semiconductor switch including an N type semiconductor substrate, spaced apart first and second P type diffused regions formed on a surface of an N type substrate, spaced apart first and second N type diffused regions formed in the second P type diffused region, a first gate insulating layer formed on the surface of the second P type diffused region between the first and second N type diffused regions to cover portions thereof, a first gate electrode formed on the first gate insulating layer between the first and second N type diffused regions, a resistance region disposed on the first gate insulating layer, one end of the resistance region on the side opposite to the first gate electrode, a second gate insulating layer overlying the first gate electrode and the resistance region, a semiinsulating layer formed on the surface of the substrate except over the first and second P type diffused regions, an insulating layer overlying the semiinsulating layer, a P gate electrode electrically connected to the second P type diffused region and the second N type diffused region, a second gate electrode formed on the second gate insulating layer at a portion above the first gate electrode, a cathode electrode connected to the first N type diffused region, an anode electrode connected to the first P type diffused region and the second gate electrode and a high resistance region formed immediately beneath the first gate insulating layer and between the first and second N type diffused regions.
    • 一种PNPN半导体开关,包括N型半导体衬底,形成在N型衬底的表面上的间隔开的第一和第二P型扩散区域,形成在第二P型扩散区域中的间隔开的第一和第二N型扩散区域,第一 栅极绝缘层,形成在第一和第二N型扩散区域之间的第二P型扩散区域的表面上以覆盖其部分;形成在第一和第二N型扩散区域之间的第一栅极绝缘层上的第一栅电极, 电阻区域,设置在所述第一栅极绝缘层上,所述电阻区域的与所述第一栅极电极相反一侧的一端,覆盖所述第一栅电极和所述电阻区域的第二栅极绝缘层,形成在所述第一栅极绝缘层的表面上的半绝缘层 基板除了第一和第二P型扩散区域之外,覆盖半绝缘层的绝缘层,P栅极电极 与第二P型扩散区域和第二N型扩散区域连接的第二栅电极,形成在第一栅极电极上方的第二栅极绝缘层上的第二栅电极,连接到第一N型扩散区域的阴极电极, 连接到第一P型扩散区域和第二栅电极的阳极电极和形成在第一栅极绝缘层正下方以及第一和第二N型扩散区域之间的高电阻区域。
    • 4. 发明授权
    • Clock signal reproducing network for PCM signal reception
    • 用于PCM信号接收的时钟信号再现网络
    • US4004162A
    • 1977-01-18
    • US651369
    • 1976-01-22
    • Kotaro KatoHaruki Takai
    • Kotaro KatoHaruki Takai
    • H04L1/00H03K3/86H03K5/00H03L7/00H03L7/06H04B7/155H04J3/06H04L5/22H04L7/02H04L7/027H03K3/78
    • H04L7/027
    • A clock signal reproducing network for PCM signal reception is capable of reproducing a clock signal even if the clock component is absent in the input digital signal for a prolonged period of time. The network includes a clock signal component extracting circuit and a bandpass filter for extracting and band-limiting the clock signal component in a received digital signal. An envelope detection circuit and a level decision circuit are connected to receive the output of the bandpass filter to provide a control signal to an output switching circuit. When the amplitude of the envelope of the filter output is high, the output of the bandpass filter is used directly as a reproduced clock signal. When the amplitude of the envelope is low, the clock signal obtained immediately before the filter amplitude becomes small is derived repeatedly from a delay circuit as a substituted clock signal.
    • 即使长时间在输入数字信号中不存在时钟分量,用于PCM信号接收的时钟信号再现网络能够再现时钟信号。 网络包括时钟信号分量提取电路和带通滤波器,用于提取和限制接收的数字信号中的时钟信号分量。 连接包络检测电路和电平判定电路以接收带通滤波器的输出以向输出开关电路提供控制信号。 当滤波器输出的包络的幅度高时,带通滤波器的输出被直接用作再现的时钟信号。 当包络的振幅低时,紧接在滤波器幅度变小之前获得的时钟信号作为替代时钟信号从延迟电路重复地导出。
    • 5. 发明授权
    • Digital communication system including an error correcting
encoder/decoder and a scrambler/descrambler
    • 数字通信系统包括纠错编码器/解码器和加扰器/解扰器
    • US4639548A
    • 1987-01-27
    • US718725
    • 1985-04-01
    • Goro OshimaKotaro Kato
    • Goro OshimaKotaro Kato
    • H04L1/00H03M13/00H03M13/33H04L7/00H04L25/03H04L9/00
    • H04L25/03872H03M13/00H03M13/33
    • An error correction code data communication system scrambles and descrambles both non-coded data and coded data by using substantially the same code process at the opposite ends of a transmission path. The frequency of the occurrence of an error correction pulse in a decoder is monitored to set up synchronization for descrambling. The transmitter includes an encoder for adding a correction code to a data signal to be transmitted, and a scrambler for randomizing the data signal. The receiver includes a descrambler for descrambling the data signal which was randomized by the scrambler, and a decoder for correcting a code error responsive to the error correction code. The scrambler modulo 2 adds an output of a random signal generator to both an input data signal and an output data signal. The descrambler modulo 2 adds an output of a second random signal generator to both an input data signal and an output data signal.
    • 错误校正码数据通信系统通过在传输路径的相对端使用基本上相同的码过程来加扰和解扰非编码数据和编码数据。 监视解码器中发生纠错脉冲的频率,以建立用于解扰的同步。 发射机包括用于将校正码添加到要发射的数据信号的编码器,以及用于使数据信号随机化的加扰器。 该接收机包括一个解扰器,用于对由扰频器进行随机化的数据信号进行解扰,以及解码器,用于响应纠错码校正码错误。 加扰器模2将随机信号发生器的输出添加到输入数据信号和输出数据信号。 解扰器模2将第二随机信号发生器的输出添加到输入数据信号和输出数据信号。
    • 6. 发明授权
    • Clock recovery circuit for burst communications systems
    • 用于突发通信系统的时钟恢复电路
    • US4339817A
    • 1982-07-13
    • US183333
    • 1980-09-02
    • Masaharu HataKotaro Kato
    • Masaharu HataKotaro Kato
    • H04J3/06H04B7/155H04L7/027H04L7/033H04L7/10H04L27/22H04L7/00H04J6/00
    • H04L7/033
    • A clock recovery circuit includes an oscillator having a frequency which is substantially equal to the clock frequency of bursts which are transmitted from a plurality of stations. A phase difference detector circuit responds to phase differences between clock signals extracted from each of the bursts and from the output from the oscillator. An averaging circuit averages the detected phase differences over an interval which is designated by a first control signal. A memory circuit stores the averaged phase difference in response to a second control signal and reads out the stored phase differences in response to a third control signal. A control circuit generates the first to third control signals in response to the output from the oscillator. A phase shift circuit shifts the phase of the output from the oscillator, based on the phase difference read out from the memory circuit. This generates and recovers the original clock pulse signal. The clock of the first burst corresponding to the stored phase difference is used as the clock for a second burst from the same station which transmits the first burst.
    • 时钟恢复电路包括具有基本上等于从多个站发送的突发的时钟频率的频率的振荡器。 相位差检测器电路响应从每个突发提取的时钟信号与来自振荡器的输出的相位差。 平均电路在由第一控制信号指定的间隔上对检测到的相位差进行平均。 存储电路响应于第二控制信号存储平均的相位差,并响应于第三控制信号读出存储的相位差。 控制电路响应于来自振荡器的输出而产生第一至第三控制信号。 基于从存储器电路读出的相位差,相移电路使振荡器的输出的相位移位。 这将产生并恢复原始时钟脉冲信号。 对应于所存储的相位差的第一脉冲串的时钟被用作来自发送第一脉冲串的同一电台的第二脉冲串的时钟。