Method and apparatus for controlling a servo motor using a stepper motor
controller integrated circuit
    41.
    发明授权
    Method and apparatus for controlling a servo motor using a stepper motor controller integrated circuit 有权
    使用步进电机控制器集成电路控制伺服电机的方法和装置

    公开(公告)号:US5936371A

    公开(公告)日:1999-08-10

    申请号:US250522

    申请日:1999-02-16

    CPC classification number: H02P8/42 B41J19/202 H02P7/03 H02P7/285

    Abstract: An improved DC servo motor driver circuit is provided that is based upon a readily available conventional stepper motor driver integrated circuit (IC). The IC's current "Sense" line that is usually connected to a low value resistor is instead tied to DC common or to ground. The IC's "Comparator" input, which is usually connected to the current Sense line, is connected to a pulsing input signal that provides the comparators with an appropriate voltage to make the comparators believe that more current is required at the very times the remaining portions of the circuit are attempting to provide current to the DC servo motor. An RC circuit is provided at the IC's "Pulse Time" input so that the monostable timer is properly triggered. An ASIC provides the proper logic signals to not only control the direction of the DC servo motor, but also to provide pulses of an appropriate frequency and duty cycle to emulate a pulse-width modulator. The direction signal is connected to the "Phase" input, and the pulse-width modulated signal is provided to interface circuitry that drives the Comparator and Pulse Time inputs. The output transistors in an H-bridge driver stage within the stepper motor driver IC are controlled so as to provide pulse-width modulated voltage pulses across the motor winding of the DC servo motor, such that this DC servo motor can operate exactly as if it were being driven by an integrated circuit that was specifically designed to act as a DC servo motor driver circuit. The average current supplied over time to the DC servo motor is directly related to the duty cycle of the pulse-width modulated voltage pulses across its winding, which in turn is directly related to the duty cycle of the main input control signal.

    Abstract translation: 提供了一种改进的直流伺服电机驱动器电路,其基于容易获得的常规步进电机驱动器集成电路(IC)。 通常连接到低电阻电阻的IC当前的“Sense”线连接到DC通用或接地。 通常连接到当前Sense线的IC的“比较器”输入端连接到脉冲输入信号,为比较器提供适当的电压,使比较器认为在其余部分 电路正试图向直流伺服电机提供电流。 在IC的“脉冲时间”输入端提供RC电路,以便正确触发单稳定时器。 ASIC提供了适当的逻辑信号,不仅可以控制直流伺服电机的方向,而且提供适当的频率和占空比的脉冲来仿真脉冲宽度调制器。 方向信号连接到“相”输入,脉冲宽度调制信号提供给驱动比较器和脉冲时间输入的接口电路。 控制步进电机驱动器IC内H桥驱动级的输出晶体管,以便在直流伺服电机的电机绕组上提供脉冲宽度调制的电压脉冲,使得该直流伺服电机可以精确地操作 由专门设计用作直流伺服电机驱动电路的集成电路驱动。 直流伺服电机随时间提供的平均电流与其绕组上的脉冲宽度调制电压脉冲的占空比直接相关,而脉冲宽度调制电压脉冲又与主输入控制信号的占空比直接相关。

    Apparatus and method for a resolution quality redefinition control system for a multi-function device
    42.
    发明授权
    Apparatus and method for a resolution quality redefinition control system for a multi-function device 有权
    一种用于多功能设备的分辨率质量重新定义控制系统的装置和方法

    公开(公告)号:US07872775B2

    公开(公告)日:2011-01-18

    申请号:US10154655

    申请日:2002-05-24

    CPC classification number: H04N1/40068 H04N1/40

    Abstract: A resolution quality redefinition control system for a multi function scanner/printer controls a plurality of functions executable such as scanning, printing, copying and faxing. Multiple resolution qualities may be selected by a user for any of the functions through a user input in communication with the controller. A designated quality resolution may not be appropriate for a designated function, however. Some of the functions have an optimal resolution and/or a significant range of resolutions. When the designated quality resolution is not appropriate for a designated function, the controller re-defines the designated quality resolution as an execute resolution for each execution of one of the functions. The execute resolution may be a higher one of the multiple designatable resolutions when the designated resolution is below the optimal resolution but within said significant range, may be a lower of the multiple designatable resolutions when the designated resolution is above the optimal resolution but within said significant range, may be a maximum resolution, may be a minimum resolution or may be a single optimal resolution.

    Abstract translation: 用于多功能扫描器/打印机的分辨率质量重新定义控制系统控制可执行的多个功能,例如扫描,打印,复印和传真。 用户通过与控制器通信的用户输入可以为任何功能选择多个分辨率质量。 然而,指定的质量决议可能不适合指定的职能。 一些功能具有最佳分辨率和/或显着的分辨率范围。 当指定的质量分辨率不适用于指定的功能时,控制器将指定的质量分辨率重新定义为每次执行其中一个功能的执行分辨率。 当指定的分辨率低于最佳分辨率但在所述有效范围内时,执行分辨率可以是多个可指定分辨率中较高的一个,当指定的分辨率高于最佳分辨率但在所述显着范围内时,可以是多个可指定分辨率中的较低者 范围,可以是最大分辨率,可以是最小分辨率,或者可以是单个最优分辨率。

    RFID linking device-based switchable sensor, component with switchable sensor, and system for detecting component unseated
    43.
    发明授权
    RFID linking device-based switchable sensor, component with switchable sensor, and system for detecting component unseated 有权
    基于RFID连接装置的可切换传感器,具有可转换传感器的部件,以及用于检测部件不合格的系统

    公开(公告)号:US07834776B2

    公开(公告)日:2010-11-16

    申请号:US12024298

    申请日:2008-02-01

    CPC classification number: B41J2/1752 B41J2/17546

    Abstract: A RFID linking device-based switchable sensor can be used to detect an unseated condition of one component with another component. The switchable sensor includes a RFID linking device, such as a RFID tag, with an electrical circuitry mountable on the one component and a switchable device incorporated with two portions of the electrical circuitry physically and electrically separated from one another such that the switchable device is exposed and normally in a first condition disabling the RFID linking device to a communicatively unavailable state. The switchable device is accessible from externally of the switchable sensor and thus switchable to a second condition, due to contact with an actuator element on the other component, enabling the RFID linking device to a communicatively available state in response to the one component being placed in the seated condition with the other component.

    Abstract translation: 可以使用基于RFID连接装置的可切换传感器来检测具有另一部件的一个部件的不合格状态。 可切换传感器包括RFID连接装置,例如RFID标签,其具有可安装在一个部件上的电路;以及可转换装置,其与所述电路的两部分相互物理地和电气地分离,使得可切换装置暴露 并且通常处于禁用RFID链接设备到可通信不可用状态的第一状态。 可切换装置可从可切换传感器的外部访问,并且由于与另一部件上的致动器元件的接触而可切换到第二状态,使得RFID连接装置响应于一个部件被放置在可通信可用状态 与其他组件的就座状态。

    Method and System for Improving Output Quality of Image Forming Devices
    44.
    发明申请
    Method and System for Improving Output Quality of Image Forming Devices 审中-公开
    提高图像形成装置输出质量的方法和系统

    公开(公告)号:US20100245937A1

    公开(公告)日:2010-09-30

    申请号:US12410948

    申请日:2009-03-25

    Abstract: The invention includes a method and system for improving the output quality of an image forming device. The method includes comparing an amount of speckle present in the images with a predefined amount of speckle. Thereafter, it is evaluated whether an adjustment of an angle of inclination of an image capture assembly in the image forming device is required for improving the output quality of the images. Accordingly, the height of one or more spacers of a spacer assembly may be altered for inclining the image capture assembly with respect to a transparent surface on which an object to be scanned by the image forming device is placed. The height of the spacer assembly may be adjustable by a user or pre-set to an optimum level for reducing the speckle to a value less than or equal to the predefined amount of speckle.

    Abstract translation: 本发明包括一种用于提高图像形成装置的输出质量的方法和系统。 该方法包括将图像中存在的斑点的量与预定量的斑点进行比较。 此后,评估是否需要图像捕获组件在图像形成装置中的倾斜角度的调整以提高图像的输出质量。 因此,可以改变间隔件组件的一个或多个间隔件的高度,以相对于其上放置图像形成装置的要被扫描的物体的透明表面倾斜图像捕获组件。 间隔件组件的高度可以由使用者调整,或预设为最佳水平,以将散斑减小到小于或等于预定量的散斑值。

    System and method for controlling current density in thermal printheads
    48.
    发明授权
    System and method for controlling current density in thermal printheads 有权
    用于控制热敏打印头中电流密度的系统和方法

    公开(公告)号:US06409298B1

    公开(公告)日:2002-06-25

    申请号:US09583687

    申请日:2000-05-31

    Abstract: Electromigration within heater resistors of printheads is prevented by taking into account a resistance degradation characteristic of the heater resistors. In one method a burn in operation of the printhead heater resistors is provided in order to bring the heater resistor resistance to a substantially stable resistance value. Alternatively, a method of controlling firing of a heater resistor within a printhead of an ink jet printer involves establishing a desired current density or maximum acceptable current density for the heater resistor. A resistance of the heater resistor is thereafter monitored during printing operations. Based at least in part upon the monitored resistance, a firing voltage across the heater resistor is adjusted in order to maintain the desired current density through the heater resistor or in order to hold current density through the heater resistor at or below the maximum acceptable current density.

    Abstract translation: 通过考虑加热电阻器的电阻劣化特性来防止打印头的加热电阻器内的电迁移。 在一种方法中,提供打印头加热电阻器的操作烧录,以使加热器电阻器电阻达到基本上稳定的电阻值。 或者,控制在喷墨打印机的打印头内的加热电阻器的点火的方法包括为加热电阻器建立期望的电流密度或最大可接受的电流密度。 此后在打印操作期间监视加热电阻的电阻。 至少部分地基于所监测的电阻,调节加热电阻器两端的点火电压,以便通过加热电阻器保持期望的电流密度,或者为了保持通过加热电阻器的电流密度达到或低于最大可接受电流密度 。

    Driver circuit with low side data for matrix inkjet printhead, and method therefor
    49.
    发明授权
    Driver circuit with low side data for matrix inkjet printhead, and method therefor 有权
    用于矩阵喷墨打印头的低边数据的驱动电路及其方法

    公开(公告)号:US06299292B1

    公开(公告)日:2001-10-09

    申请号:US09371458

    申请日:1999-08-10

    CPC classification number: B41J2/04541 B41J2/04543 B41J2/0455 B41J2/0458

    Abstract: A driver circuit for an matrix type inkjet printhead having a plurality of first heater resistors arranged in a matrix comprising a plurality of groups of heater resistors. The driver circuit comprises a plurality of first switches and a plurality of second switches. Each of the plurality of first switches is coupled to a heater resistor in each of the plurality of groups and is responsive to one of a plurality of first control signals to supply a current to the associated heater resistor. Each of the plurality of second switches is associated with one of the plurality of first switches, and comprises an input, an output and a gate. The input of each of the plurality of second switches is coupled to one of the plurality of first control signals, and the output of each of the plurality of second switches is coupled to the plurality of first switches for one of the plurality of groups of heater resistors. Each of the plurality of second switches is responsive to one of a plurality of second control signals coupled to the gate thereof to transfer one of the plurality of first control signals coupled to its input to an associated one of the plurality of first switches from its output, thereby driving one of the plurality of heater resistors in a group.

    Abstract translation: 一种用于矩阵型喷墨打印头的驱动电路,具有多个第一加热电阻器,该多个第一加热电阻器以矩阵形式布置,包括多组加热电阻器。 驱动器电路包括多个第一开关和多个第二开关。 多个第一开关中的每一个耦合到多个组中的每个组中的加热电阻器,并且响应于多个第一控制信号中的一个向相关联的加热电阻器提供电流。 多个第二开关中的每一个与多个第一开关中的一个相关联,并且包括输入,输出和门。 多个第二开关中的每一个的输入耦合到多个第一控制信号中的一个,多个第二开关中的每一个的输出耦合到多个第一开关,用于多组加热器 电阻 多个第二开关中的每一个响应耦合到其栅极的多个第二控制信号中的一个,以将耦合到其输入的多个第一控制信号中的一个耦合到多个第一开关中的相关联的一个从其输出 从而驱动一组中的多个加热电阻器中的一个。

    Identification of thermal inkjet printer cartridges
    50.
    发明授权
    Identification of thermal inkjet printer cartridges 失效
    识别热喷墨打印机墨盒

    公开(公告)号:US6161915A

    公开(公告)日:2000-12-19

    申请号:US99814

    申请日:1998-06-19

    CPC classification number: B41J2/17546 H05K1/0266 H05K3/361 Y10S439/955

    Abstract: The invention relates to an apparatus for providing information to a printer controller in order to identify the type of printer cartridge installed in a thermal ink jet printer. The apparatus includes a printer cable containing a set of electrically-conductive wires connected to contacts in a printer cable connector. The contacts of the printer cable connector make physical connection to an identification circuit on the printer cartridge. The identification circuit includes an electrical conductor which is at an electrical reference potential. When none, or one or more contacts on the cable connector are in electrical contact with the electrical conductor of the identification circuit, a signal corresponding to the identification of the printer cartridge is produced which is used by the printer controller to determine the type of printer cartridge installed in the printer. Selective contact between the connector contacts and the identification circuit, so as to produce an electrical code, may be obtained using a label having apertures, contact pads, electrical traces, or a combination thereof. Accordingly, various cartridge identification codes can be produced using various methods which allow encoding of the information on a cartridge during or after the manufacture of the cartridge body is substantially complete.

    Abstract translation: 本发明涉及一种用于向打印机控制器提供信息以便识别安装在热喷墨打印机中的打印机盒的类型的装置。 该设备包括一个打印机电缆,该打印机电缆包含连接到打印机电缆连接器中的触点的一组导电线。 打印机电缆连接器的触点与打印机墨盒上的识别电路进行物理连接。 识别电路包括处于电参考电位的电导体。 当电缆连接器上没有一个或多个触点与识别电路的电导体电接触时,产生与打印机盒的识别相对应的信号,由打印机控制器用于确定打印机的类型 墨盒安装在打印机中。 可以使用具有孔,接触垫,电迹线或其组合的标签来获得连接器触点和识别电路之间的选择性接触以产生电码。 因此,可以使用允许在盒体的制造期间或之后对盒的信息进行编码的各种方法来生产各种盒识别码,这些方法基本上完成。

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