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    • 2. 发明授权
    • Semiconductor memory device with a data clear circuit
    • 半导体存储器件具有数据清除电路
    • US4879686A
    • 1989-11-07
    • US163750
    • 1988-03-03
    • Azuma SuzukiTakayuki OotaniMitsuo Isobe
    • Azuma SuzukiTakayuki OotaniMitsuo Isobe
    • G11C11/401G11C7/20G11C11/419
    • G11C7/20G11C11/419
    • A semiconductor memory device comprising a memory cell-selecting section, an input supply control section, and a bit-line potential control section. The memory cell-selecting section includes a row decoder and a first gate circuit coupled to the output thereof. The memory cell-selecting section drives all the memory cells making up the memory device, when it is set in the mode for clearing the memory device, and the input data supply control section disconnects a pair of bit lines from a write circuit when the control section is set in this same mode. When the bit-line potential control section is set in the memory-clearing mode, it sets the potential of one of the bit lines at a high level, and the potential of the other bit line at a low potential.
    • 一种半导体存储器件,包括存储单元选择部分,输入电源控制部分和位线电位控制部分。 存储单元选择部分包括与其输出耦合的行解码器和第一门电路。 当存储单元选择部分被设置为用于清除存储器件的模式时,驱动构成存储器件的所有存储器单元,并且当控制器的控制被切换时,输入数据提供控制部件从写入电路断开一对位线 部分设置在同一模式。 当位线电位控制部分设定在存储器清零模式时,它将位线之一的电位设置在高电平,另一位线的电位设置在低电位。
    • 3. 发明授权
    • Output buffer control circuit of memory device
    • 存储器件的输出缓冲器控制电路
    • US4858197A
    • 1989-08-15
    • US198052
    • 1988-05-24
    • Akira AonoMitsuo Isobe
    • Akira AonoMitsuo Isobe
    • G11C7/10G11C8/18
    • G11C7/1057G11C7/1051G11C8/18
    • In an output buffer control circuit of a memory, the set/reset state of a flip-flop is controlled by an address transition detection output and a read detection output supplied when completion of data read from a memory cell is detected, and the active/inactive state of an output buffer for outputting the readout data from the memory cell is controlled by an output from the flip-flop. According to this arrangement, when an address input transits and the address transition detection output is enabled, the output buffer is inactivated. When data is read out from the memory cell and the read detection output is enabled after the address input transits, the output buffer can be activated.
    • 在存储器的输出缓冲器控制电路中,触发器的置位/复位状态由地址转变检测输出和当检测到从存储器单元读取的数据完成时提供的读取检测输出来控制, 用于从存储单元输出读出数据的输出缓冲器的非活动状态由触发器的输出控制。 根据该结构,当地址输入转换并且地址转换检测输出被使能时,输出缓冲器被禁止。 当从存储单元中读出数据并且在地址输入转换后读取检测输出被使能时,可以激活输出缓冲器。
    • 9. 发明授权
    • Automatic gain control device
    • 自动增益控制装置
    • US4963969A
    • 1990-10-16
    • US314087
    • 1989-02-23
    • Hiromu KitauraMitsuo IsobeYuichi NinomiyaYoshimichi OhtsukaYoshinori Izumi
    • Hiromu KitauraMitsuo IsobeYuichi NinomiyaYoshimichi OhtsukaYoshinori Izumi
    • H04N5/04H04N5/52H04N7/015
    • H04N5/52
    • Disclosed is an automatic gain control device which comprises: a first amplitude detection circuit for detecting an average amplitude value of a television video signal, a peak amplitude value of the same television video signal, or a value obtained by mixing the average amplitude value and the peak amplitude value with a predetermined mixing ratio; a second amplitude detection circuit for detecting an amplitude value of a vertical or horizontal synchronizing signal in the television video signal; an amplitude control circuit for controlling an amplitude of an input television video signal; a synchronization circuit for detecting a vertical synchronizing signal and a horizontal synchronizing signal in the television video signal so as to generate various pulses including a clock pulse synchronized with the input television video signal by controlling an oscillation frequency of an oscillation circuit; and a synchronization phase lock detection circuit for detecting whether the synchronization circuit has been pulled into synchronism with the input television video signal, so that the amplitude control circuit is controlled by an output of the second amplitude detection circuit when synchronization phase-lock is established while controlled by an output of the first amplitude detection circuit when the synchronization phase-lock comes out.
    • 公开了一种自动增益控制装置,包括:第一幅度检测电路,用于检测电视视频信号的平均振幅值,相同电视视频信号的峰值振幅值,或通过混合平均振幅值和 具有预定混合比的峰值振幅值; 第二振幅检测电路,用于检测电视视频信号中的垂直或水平同步信号的振幅值; 幅度控制电路,用于控制输入电视视频信号的幅度; 用于检测电视视频信号中的垂直同步信号和水平同步信号的同步电路,以通过控制振荡电路的振荡频率产生包括与输入电视视频信号同步的时钟脉冲的各种脉冲; 以及同步锁相检测电路,用于检测同步电路是否已被拉入与输入的电视视频信号同步,使得当建立同步锁相时,幅度控制电路由第二幅度检测电路的输出控制,而 当同步锁相出来时由第一幅度检测电路的输出控制。