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    • 43. 发明授权
    • Data storage apparatus with an A/D converter having a reference voltage
control based upon a signal before and after discrimination
    • 具有A / D转换器的数据存储装置具有基于鉴别前后的信号的基准电压控制
    • US5546245A
    • 1996-08-13
    • US074297
    • 1993-06-09
    • Naoki Sato
    • Naoki Sato
    • G11B5/035G11B5/09G11B20/10H03M1/18H03M1/62H03M1/84H03M1/88
    • H03M1/182G11B20/10009G11B5/035G11B5/09
    • A data storage apparatus and method that allows the signal processing circuit to be in integrated form, so that the magnetic storage system may be reduced in size with increased performance is described. The apparatus includes a reproducing head that reproduces information stored on a recording medium, a preamplifier that amplifies the output of the reproducing head, and a low-pass filter. An A/D converter converts the output for the low-pass filter to a digital signal and has a reference voltage. A discriminator is coupled to an output of the A/D converter and discriminates the digital signal. A circuit, coupled to the discriminator, provides negative feedback control of the reference voltage of the A/D converter as a function of the digital signal before the discrimination by the discriminator and the digital signal that has been discriminated by the discriminator.
    • 一种允许信号处理电路集成的数据存储装置和方法,从而可以以增加的性能来减小磁存储系统的尺寸。 该装置包括再现记录介质上存储的信息的再现头,放大再现头的输出的前置放大器和低通滤波器。 A / D转换器将低通滤波器的输出转换为数字信号,并具有参考电压。 鉴别器耦合到A / D转换器的输出端并鉴别数字信号。 耦合到鉴别器的电路在鉴别器鉴别之前的数字信号和已被鉴别器识别的数字信号之间提供对A / D转换器参考电压的负反馈控制。
    • 45. 发明授权
    • Decoding method and apparatus with maximum likelihood sequence estimation
    • 具有最大似然序列估计的解码方法和装置
    • US5392316A
    • 1995-02-21
    • US010390
    • 1993-01-28
    • Hideki SawaguchiYasuhide OuchiNaoki SatoYosuke Hori
    • Hideki SawaguchiYasuhide OuchiNaoki SatoYosuke Hori
    • G11B20/18G11B20/10H03M13/23H03M13/31H03M13/39H03M13/41H04L25/03H04L25/08H04L25/49G11B5/02
    • H03M13/6343G11B20/10009H03M13/31H03M13/41H03M13/6502H04L25/03178
    • A magnetic recording apparatus includes a magnetic recording medium for recording a binary signal; a magnetic head for detecting the binary signal; an amplifier for amplifying the binary signal detected by the magnetic head; a channel for outputting the amplified binary signal in the form of a timing value sequence, the timing value sequence alternatively providing positive and negative peak values following the rule of the binary signal that recorded in the recording medium; a temporary judging unit for judging a presently input timing value of the timing value sequence supplied from the channel as one of the positive peak value, in accordance with the relationship with a preceding timing value temporarily judged as one of the positive and negative peak values; a final judging unit for finally setting the preceding timing value as one of the positive and negative peak values and the intermediate value, in accordance with the relationship with the presently input and temporarily judged timing value; a counter for counting the number of input bits of the timing value sequence; a unit for resetting the counter when the timing value temporarily judged as one of the positive and negative peak values is output; a register for storing a decoded binary bit value; and a unit for overwriting the bit value in the register at the bit position corresponding to the count of the counter.
    • 磁记录装置包括用于记录二进制信号的磁记录介质; 用于检测二进制信号的磁头; 用于放大由磁头检测的二进制信号的放大器; 用于以定时值序列的形式输出放大的二进制信号的通道,所述定时值序列交替地提供正和负峰值,遵循记录在记录介质中的二进制信号的规则; 根据与临时判断为正值和负峰值之一的先前定时值的关系,判断从通道提供的定时值序列的当前输入定时值作为正峰值之一的临时判断单元; 根据与当前输入和临时判断的定时值的关系,最终将前一定时值最后设置为正和负峰值和中间值之一的最终判断单元; 用于对定时值序列的输入位数进行计数的计数器; 当临时判断为正值和负峰值之一的定时值被输出时用于复位计数器的单元; 用于存储解码的二进制位值的寄存器; 以及用于在与计数器的计数相对应的位位置处重写寄存器中的位值的单元。
    • 50. 发明授权
    • Image forming apparatus having light guiding unit to provide stain prevention on latent-image carrier
    • 具有导光单元的图像形成装置,用于在潜像载体上提供防污染
    • US08768199B2
    • 2014-07-01
    • US13192258
    • 2011-07-27
    • Naoki SatoKuniaki Tanaka
    • Naoki SatoKuniaki Tanaka
    • G03G15/02
    • G03G21/08G03G2215/0177
    • An image forming apparatus includes a latent-image carrier that is rotatable and carries a latent image on an outer peripheral surface thereof; a transfer unit that transfers a developer image obtained by developing the latent image with developer onto a transfer medium; a cleaning unit that is disposed downstream of the transfer unit in a rotational direction of the latent-image carrier and removes the developer from the latent-image carrier after the developer image is transferred; a light source that is disposed between the transfer unit and the cleaning unit and emits light for removing electric charge from the latent-image carrier; and a guiding member that is disposed below the cleaning unit and above a transport path of the transfer medium, receives the developer that falls from the cleaning unit at an upper surface thereof, and guides the light to the latent-image carrier.
    • 图像形成装置包括可旋转并在其外周面上承载潜像的潜像载体; 将通过显影剂显影潜像获得的显影剂图像转印到转印介质上的转印单元; 清洁单元,其在所述潜像载体的旋转方向上设置在所述转印单元的下游,并且在所述显影剂图像转印之后从所述潜像载体上除去所述显影剂; 光源,设置在所述转印单元和所述清洁单元之间,并且发出用于从所述潜像载体去除电荷的光; 以及引导构件,其设置在所述清洁单元的下方并且位于所述转印介质的输送路径的上方,在其上表面接收从所述清洁单元落下的显影剂,并将所述光引导至所述潜像载体。