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43 条记录 (耗时 0.039 秒)

    Circuit for controlling sequential access to SDRAM
    14.
    发明授权
    Circuit for controlling sequential access to SDRAM 有权
    用于控制顺序访问SDRAM的电路

    公开(公告)号：US06859848B2

    公开(公告)日：2005-02-22

    申请号：US10417087

    申请日：2003-04-17

    申请人： Akira Kuronuma ,  Souhei Tanaka ,  Masafumi Wataya ,  Toru Nakayama ,  Takuji Katsu

    发明人： Akira Kuronuma ,  Souhei Tanaka ,  Masafumi Wataya ,  Toru Nakayama ,  Takuji Katsu

    IPC分类号： G06F12/02 ,  G06F12/00 ,  G06F13/28

    CPC分类号： G06F13/28

    摘要： A DMA controller arbitrates and selects a DMA control information signal received from at least one of a plurality of DMA request blocks and accesses an SDRAM on the basis of the selected DMA control information signal. In the DMA controller, an SDRAM controller detects using a detector the number of possible sequential accesses on the basis of a DMA start address signal, compares using a comparator this number of possible sequential accesses with the burst DMA request number designated by a BSTNUM signal, selects not larger one of the two numbers, and sets the number of sequential DMAs to be actually executed to the selected number. Accordingly, with a simple configuration, sequential access is made possible starting from an arbitrary address.

    摘要翻译： DMA控制器仲裁并选择从多个DMA请求块中的至少一个接收的DMA控制信息信号，并且基于所选择的DMA控制信息信号访问SDRAM。 在DMA控制器中，SDRAM控制器基于DMA开始地址信号检测使用检测器可能的顺序访问次数，使用比较器将该数量的可能顺序访问与由BSTNUM信号指定的突发DMA请求号进行比较， 选择两个数字中较大的一个，并将实际执行的连续DMA数设置为所选数字。 因此，通过简单的配置，可以从任意地址开始顺序访问。

    Signal output circuit, parallel interface circuit and printer apparatus
    15.
    发明授权
    Signal output circuit, parallel interface circuit and printer apparatus 失效
    信号输出电路，并行接口电路和打印机

    公开(公告)号：US6087878A

    公开(公告)日：2000-07-11

    申请号：US6198

    申请日：1998-01-13

    申请人： Noriyuki Suzuki ,  Sohei Tanaka ,  Masafumi Wataya ,  Hiroshi Uemura ,  Nobuyuki Tsukada

    发明人： Noriyuki Suzuki ,  Sohei Tanaka ,  Masafumi Wataya ,  Hiroshi Uemura ,  Nobuyuki Tsukada

    IPC分类号： B41J29/38 ,  G06F3/00 ,  G06F3/12 ,  H03K5/08 ,  H03K19/0175 ,  H04L29/10

    CPC分类号： H03K19/01759 ,  B41J2/04541 ,  B41J2/04586 ,  H03K19/017581

    摘要： An interface in accordance with IEEE 1284 has a signal output stage which is a totem pole circuit. The totem pole circuit may be damaged if its output signal line is left grounded for an extended period of time or if outputs are being delivered at both ends of the signal line. Drive by the totem pole circuit is limited to a case where a signal to be output is at a low level and to a length of time equivalent to, say, one clock period from the moment the signal makes a transition from the low to a high level. A high impedance is established at all other times during which the high level is in effect, with the high level being maintained by a pull-up resistor connected to the output signal line. As a result, the totem pole circuit will not be damaged even if the output line is grounded while at the high level.

    摘要翻译： 根据IEEE 1284的接口具有作为图腾柱电路的信号输出级。 如果图腾柱电路的输出信号线长时间接地，或输出端在信号线的两端传输，可能会损坏图腾柱电路。 图腾柱电路的驱动限于要输出的信号处于低电平的时间和等于从信号从低电平向高电平转变的时刻的一个时钟周期的时间长度 水平。 在高电平有效的所有其他时间建立高阻抗，高电平由连接到输出信号线的上拉电阻保持。 因此，即使在高电平时输出线接地，图腾柱电路也不会损坏。

    Recording apparatus for effecting multi-pass printing
    16.
    发明授权
    Recording apparatus for effecting multi-pass printing 失效
    用于进行多遍打印的记录装置

    公开(公告)号：US6027197A

    公开(公告)日：2000-02-22

    申请号：US885813

    申请日：1997-06-30

    申请人： Yoshiaki Kaburagi ,  Sohei Tanaka ,  Masafumi Wataya ,  Noriyuki Suzuki ,  Hiroshi Uemura

    发明人： Yoshiaki Kaburagi ,  Sohei Tanaka ,  Masafumi Wataya ,  Noriyuki Suzuki ,  Hiroshi Uemura

    IPC分类号： B41J2/205 ,  B41J2/21 ,  B41J29/38 ,  G06K15/10

    CPC分类号： G06K15/105 ,  G06K2215/0077 ,  G06K2215/101 ,  G06K2215/111

    摘要： A recording apparatus records an image on a recording medium by scanning by a recording head. Mask data for masking record data is set in registers, a record timing signal synchronized with the scan of the recording head is counted up by a counter, and the mask data set in the registers is selected by selectors in accordance with the count. The selected mask data is logically ANDed with the record data to drive the recording head. A load to software is reduced and the recording is attained while the record data is masked with a simple construction.

    摘要翻译： 记录装置通过记录头的扫描将图像记录在记录介质上。 用于掩蔽记录数据的掩模数据被设置在寄存器中，与记录头的扫描同步的记录定时信号由计数器向上计数，并且根据计数由选择器选择在寄存器中设置的掩码数据。 所选择的掩码数据与记录数据进行逻辑与运算，以驱动记录头。 降低对软件的加载，并且以简单的结构掩蔽记录数据来实现记录。

    Printing apparatus and printing system
    20.
    发明授权
    Printing apparatus and printing system 失效
    印刷设备和印刷系统

    公开(公告)号：US06789865B2

    公开(公告)日：2004-09-14

    申请号：US10080675

    申请日：2002-02-25

    申请人： Noriyuki Suzuki ,  Sohei Tanaka ,  Masafumi Wataya ,  Yasutomo Watanabe ,  Akira Kuronuma ,  Toru Nakayama ,  Shinichiro Takahama ,  Takuji Katsu

    发明人： Noriyuki Suzuki ,  Sohei Tanaka ,  Masafumi Wataya ,  Yasutomo Watanabe ,  Akira Kuronuma ,  Toru Nakayama ,  Shinichiro Takahama ,  Takuji Katsu

    IPC分类号： B41J2938

    CPC分类号： G06K15/02 ,  G06K15/1805

    摘要： This invention provides a low-cost, economical printing apparatus and printing system. For example, characteristic information of a printhead which is described, printed, adhered, or formed on a printhead or its accessory (e.g., a packaging paper box) in a format identifiable to human or an electronic device is man-machine-interactively inputted to a host or electronically inputted to the host by a barcode reader or the like. The printing apparatus discriminates whether or not a command sent from the host via an interface is a command that includes characteristic information of the printhead, and control is made to write the characteristic information of the print head into a non-volatile memory (EEPROM) in accordance with the discriminating result. The printhead is controlled in accordance with the characteristic information written into the non-volatile memory to execute a print process.

    摘要翻译： 本发明提供了一种低成本，经济的打印设备和打印系统。 例如，以人或电子设备的格式描述，打印，粘贴或形成在打印头或其附件（例如，包装纸盒）上的打印头的特征信息被人机交互地输入到 主机或通过条形码读取器等电子地输入到主机。 打印装置判断从主机经由接口发送的命令是否是包括打印头的特性信息的命令，并且进行控制以将打印头的特性信息写入到非易失性存储器（EEPROM）中 根据辨别结果。 打印头根据写入非易失性存储器的特征信息进行控制，以执行打印处理。