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    • 163. 发明授权
    • PLL circuit of pulse swallow-type prescaler system
    • 脉冲吞咽型预分频器的PLL电路
    • US5640116A
    • 1997-06-17
    • US481832
    • 1995-06-07
    • Akira KobayashiShinji Saito
    • Akira KobayashiShinji Saito
    • H03J7/02H03K23/66H03L7/193H03L7/197H03H11/16
    • H03K23/667H03L7/193
    • A PLL circuit of the pulse swallow-type prescaler system prevents erroneous module count operations such as are caused by a delay in the module signal, without the need to use a device which operates at high speeds or a device of large power. In a synthesizer of the pulse swallow-type prescaler system, a PLL circuit has a PLL COUNTER circuit and a module pulse generating circuit and a prescaler circuit has a prescaler counter, an extender circuit and a module control circuit which outputs a module control signal MO, for controlling the module operation, upon sensing the logic state of the module pulse generating signal MK, which is output by the module pulse signal generating circuit in response to the output signal MD of the PLL counter circuit.
    • 脉冲吞咽型预分频器系统的PLL电路可防止模块信号延迟引起的错误模块计数操作,而不需要使用高速工作的器件或大功率器件。 在脉冲吞咽型预分频器系统的合成器中,PLL电路具有PLL计数器电路和模块脉冲发生电路,并且预分频器电路具有预分频器计数器,延长器电路和模块控制电路,其输出模块控制信号MO 用于控制模块操作,一旦检测出由模块脉冲信号发生电路响应于PLL计数器电路的输出信号MD而输出的模块脉冲产生信号MK的逻辑状态。
    • 167. 发明授权
    • PLL synthesizer having frequency dividers with reset control
    • PLL合成器具有复位电路的分频器
    • US5304954A
    • 1994-04-19
    • US89644
    • 1993-07-12
    • Shinji SaitoAkira Kobayashi
    • Shinji SaitoAkira Kobayashi
    • H03L7/113H03L7/18H03L7/199H03L7/089H03L7/095
    • H03L7/113H03L7/199Y10S331/02
    • This invention aims at providing a PLL synthesizer circuit that can shorten lock-up time while sufficiently securing a time constant of a low-pass filter, and has a structure wherein a phase comparator 3 outputs output signals .phi.R and .phi.P on the basis of a reference signal fr output from a reference frequency divider 2, and a comparison signal fp output from a comparison frequency divider 4; the output signals .phi.R and .phi.P are negatively fed back to the comparison frequency divider 4 through a charge pump 5, a low-pass filter 6 and a voltage controlled oscillator 7, and a lock detection circuit 8 outputs a lock signal LD when in a locked state. When an output signal SVCO of the voltage control oscillator 7 coincides with a set frequency, when the lock detection circuit 8 does not output the lock signal LD, a reset circuit 15 outputs a reset signal PC to the reference frequency divider 2 and to the comparison frequency divider 4, and the reset signal PC brings the phase of the reference signal fr into conformity with the phase of the comparison signal fp.
    • 本发明旨在提供一种PLL合成器电路,其可以在充分确保低通滤波器的时间常数的同时缩短锁定时间,并且具有其中相位比较器3输出输出信号(phi)R和(phi)P 基于从参考分频器2输出的参考信号fr和从比较分频器4输出的比较信号fp; 输出信号(phi)R和(phi)P通过电荷泵5,低通滤波器6和压控振荡器7负反馈给比较分频器4,锁定检测电路8输出锁 信号LD处于锁定状态。 当电压控制振荡器7的输出信号SVCO与设定频率一致时,当锁定检测电路8不输出锁定信号LD时,复位电路15将复位信号PC输出到基准分频器2并进行比较 分频器4,并且复位信号PC使参考信号fr的相位与比较信号fp的相位一致。
    • 169. 发明授权
    • Method for producing a magnetic recording medium
    • 磁记录介质的制造方法
    • US5032428A
    • 1991-07-16
    • US512228
    • 1990-04-20
    • Hiroshi OgawaShinji SaitoHitoshi Noguchi
    • Hiroshi OgawaShinji SaitoHitoshi Noguchi
    • G11B5/84B05D1/26B05D1/28G11B5/71G11B5/716G11B5/842
    • G11B5/716G11B5/71Y10S428/90
    • A method for producing a magnetic recording medium is disclosed, comprising coating on a nonmagnetic support a magnetic coating composition for forming a lower magnetic layer and a magnetic coating composition for forming an upper magnetic layer using a wet-on-wet coating method, thereby forming plural magnetic layers, followed by drying, and then conducting heat treatment thereof, wherein the magnetic coating composition for the upper magnetic layer contains ferromagnetic alloy particles are ferromagnetic particles and does not contain a lubricating agent which has polar groups and has a molecular weight of 3000 or less, the magnetic coating composition for the lower magnetic layer contains ferromagnetic iron oxide particles as ferromagnetic particles, a lubricating agent having polar groups and having a molecular weight of 3000 or less, and a curing agent, the lubricating agent as well as the curing agent in the lower magnetic layer being diffused into the upper magnetic layer by the heat treatment.
    • 公开了一种制造磁记录介质的方法,其包括在非磁性载体上涂覆用于形成下磁性层的磁性涂料组合物和使用湿式湿式涂布法形成上层磁性层的磁性涂料组合物,由此形成 多个磁性层,然后干燥,然后进行热处理,其中包含铁磁性合金颗粒的上磁性层的磁性涂层组合物是铁磁性颗粒,并且不含有具有极性基团并且分子量为3000的润滑剂 以下的磁性涂料组合物含有作为铁磁性粒子的铁磁性氧化铁粒子,具有极性基团且分子量为3000以下的润滑剂,固化剂,润滑剂以及固化物 下磁性层中的试剂通过该磁性层扩散到上磁性层中 热处理。