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    • 9. 发明申请
    • Storage device with protection against inadvertent writing
    • 存储设备,防止无意写入
    • US20050237355A1
    • 2005-10-27
    • US11017206
    • 2004-12-21
    • Takakazu FukanoNoboru AsauchiTomio YokoyamaMitsuto Yanagisawa
    • Takakazu FukanoNoboru AsauchiTomio YokoyamaMitsuto Yanagisawa
    • B41J2/175B41J29/393G06F3/00G06F12/16
    • B41J2/17546
    • The present invention provides a storage device. The storage device includes a reset signal terminal, a clock signal terminal, a non-volatile memory, and a pull down resistance. The reset signal terminal is electrically connected to external equipment at a contact point, for receiving a reset signal. The clock signal terminal is electrically connected to the external equipment at a contact point, for receiving a clock signal. The data signal terminal is electrically connected to the external equipment at a contact point, for sending and receiving a data signal. The pull down resistance is connected to a lower side of electric potentials used by the storage device, at one terminal of the pull down resistance. The controller is initialized in response to the reset signal. The controller also writes to and reads from the non-volatile memory according to the clock signals and the data signals. The data signal includes a signal configured to raise a voltage of the data signal terminal to a higher side of the electric potentials, for instructing to write to the non-volatile memory. The data signal terminal is connected to the other terminal of the pull down resistance.
    • 本发明提供一种存储装置。 存储装置包括复位信号端子,时钟信号端子,非易失性存储器和下拉电阻。 复位信号端子在接触点处电连接到外部设备,用于接收复位信号。 时钟信号端子在接触点处电连接到外部设备,用于接收时钟信号。 数据信号端子在接触点处电连接到外部设备,用于发送和接收数据信号。 下拉电阻在下拉电阻的一个端子处连接到存储装置使用的电位的下侧。 响应于复位信号对控制器进行初始化。 控制器还根据时钟信号和数据信号写入和读取非易失性存储器。 数据信号包括被配置为将数据信号端子的电压升高到电位的较高侧的信号,用于指示写入非易失性存储器。 数据信号端子连接到下拉电阻的另一端。
    • 10. 发明授权
    • Driving waveform generator and method of generating driving waveform
    • 驱动波形发生器和产生驱动波形的方法
    • US06890046B1
    • 2005-05-10
    • US09661265
    • 2000-09-13
    • Takakazu FukanoNoboru TamuraNoboru AsauchiMasahiko YoshidaYuichi NishiharaToshihiko Katayama
    • Takakazu FukanoNoboru TamuraNoboru AsauchiMasahiko YoshidaYuichi NishiharaToshihiko Katayama
    • B41J2/045H03K4/02B41J29/38H03B21/00
    • B41J2/04508B41J2/04541B41J2/04573B41J2/04581B41J2/04588H03K4/026
    • The present invention provides a technique that prevents a shift of a driving waveform due to accumulation of errors in a process of generating the driving waveform to drive driving elements on a print head. The technique of the present invention successively sums up a plurality of gradient data at a preset calculation period to give a result of summation and carries out digital-to-analog (D-A) conversion with regard to only specific upper columns in the result of summation in synchronism with the preset calculation period, so as to generate a driving waveform. Each gradient data represents a local gradient of the driving waveform and is stored in a memory. In the process of generating the driving waveform, the technique of the present invention corrects the result of summation to a preset value under a predetermined condition. One preferable embodiment clears specific lower bits in the result of summation in synchronism with a floor signal. Another preferable embodiment forcibly corrects the result of summation to an upper limit value or a lower limit value of a preset range when the result of summation exceeds the preset range. Such correction effectively cancels the potential effects of cumulative error on the driving waveform.
    • 本发明提供了一种技术,其防止在产生驱动波形的过程中由误差积累引起的驱动波形的偏移以驱动打印头上的驱动元件。 本发明的技术在预设的计算周期连续地总结多个梯度数据,以给出求和的结果,并且仅在相加结果中的特定上列进行数 - 模(DA)转换 与预设的计算周期同步,以产生驱动波形。 每个梯度数据表示驱动波形的局部梯度并存储在存储器中。 在产生驱动波形的过程中,本发明的技术在预定条件下将求和的结果校正为预设值。 一个优选实施例与地板信号同步地清除求和结果中的特定低位。 另一个优选实施例在求和结果超过预设范围时强制将求和结果校正为预设范围的上限值或下限值。 这种校正有效地消除了累积误差对驱动波形的潜在影响。