公开(公告)号：US09407257B2

公开(公告)日：2016-08-02

申请号：US11855281

申请日：2007-09-14

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu ,  Harold Kutz

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu ,  Harold Kutz

IPC分类号： G09G3/36 ,  H03K17/687 ,  H03K19/003 ,  H03K19/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a method and apparatus to reduce power consumption in a passive matrix LCD driver circuit by using a plurality of drive buffers and active power management of sub-blocks in the passive matrix LCD drive circuit. Each drive buffer may operate in a first phase, which may include a high-drive mode to drive an LCD voltage to a threshold voltage level and a low-drive mode to modify the LCD voltage to approximate an input voltage of the drive buffer, and to maintain a constant LCD voltage level. The low-drive buffer consumes less current than the high-drive buffer, thus reducing power consumption. The drive buffer may also operate in a second phase, also a no-drive mode, in which the drive buffer and the bias voltage generator may be completely turned off, to further reduce power consumption. The drive buffer may be used to drive capacitive loads, as well as partially-resistive loads and inductive loads.

摘要翻译： 本发明的实施例涉及通过使用多个驱动缓冲器和无源矩阵LCD驱动电路中的子块的有功功率管理来减少无源矩阵LCD驱动器电路中的功耗的方法和装置。 每个驱动缓冲器可以在第一阶段中操作，其可以包括将LCD电压驱动到阈值电压电平的高驱动模式和用于修改LCD电压以接近驱动缓冲器的输入电压的低驱动模式，以及 保持恒定的LCD电压电平。 低驱动缓冲器比高驱动缓冲器消耗更少的电流，从而降低功耗。 驱动缓冲器还可以在驱动缓冲器和偏置电压发生器可以完全关闭的第二阶段也是非驱动模式下工作，以进一步降低功耗。 驱动缓冲器可用于驱动电容性负载，以及部分电阻负载和电感负载。

公开(公告)号：US20080259017A1

公开(公告)日：2008-10-23

申请号：US11855281

申请日：2007-09-14

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu ,  Harold Kutz

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu ,  Harold Kutz

IPC分类号： G09G3/36

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a method and apparatus to reduce power consumption in a passive matrix LCD driver circuit by using a plurality of drive buffers and active power management of sub-blocks in the passive matrix LCD drive circuit. Each drive buffer may operate in a first phase, which may include a high-drive mode to drive an LCD voltage to a threshold voltage level and a low-drive mode to modify the LCD voltage to approximate an input voltage of the drive buffer, and to maintain a constant LCD voltage level. The low-drive buffer consumes less current than the high-drive buffer, thus reducing power consumption. The drive buffer may also operate in a second phase, also a no-drive mode, in which the drive buffer and the bias voltage generator may be completely turned off, to further reduce power consumption. The drive buffer may be used to drive capacitive loads, as well as partially-resistive loads and inductive loads.

摘要翻译： 本发明的实施例涉及通过使用多个驱动缓冲器和无源矩阵LCD驱动电路中的子块的有功功率管理来减少无源矩阵LCD驱动器电路中的功耗的方法和装置。 每个驱动缓冲器可以在第一阶段中操作，其可以包括将LCD电压驱动到阈值电压电平的高驱动模式和用于修改LCD电压以接近驱动缓冲器的输入电压的低驱动模式，以及 保持恒定的LCD电压电平。 低驱动缓冲器比高驱动缓冲器消耗更少的电流，从而降低功耗。 驱动缓冲器还可以在驱动缓冲器和偏置电压发生器可以完全关闭的第二阶段也是非驱动模式下工作，以进一步降低功耗。 驱动缓冲器可用于驱动电容性负载，以及部分电阻负载和电感负载。

公开(公告)号：US20080258740A1

公开(公告)日：2008-10-23

申请号：US11768677

申请日：2007-06-26

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： G01R27/26

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： A self-calibration system includes a variable current source to generate a default source current for charging a capacitive load, and a load charge calibrator to detect a voltage associated with the capacitive load when charged by the default source current, and to generate a current control feedback according to the detected voltage and a desired charged voltage of the capacitive load, the current control feedback to indicate to the variable current source a charge current capable of charging the capacitive load to the desired charged voltage.

摘要翻译： 自校准系统包括可变电流源以产生用于为容性负载充电的默认电流源，以及负载电荷校准器，用于当由默认电源电流充电时检测与电容性负载相关联的电压，并且产生电流控制 根据检测到的电压和所需的电容性负载的充电电压进行反馈，电流控制反馈以向可变电流源指示能够将电容性负载充电到期望的充电电压的充电电流。

公开(公告)号：US08164365B2

公开(公告)日：2012-04-24

申请号：US11843216

申请日：2007-08-22

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： H03B1/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a method and apparatus to drive non-resistive loads. The non-resistive load driver may include two or more drivers, such as a high-drive circuit and a low-drive circuit, to drive rail-to-rail output voltages and to stabilize the output voltages at a substantially constant level. The high-drive circuit may drive the output voltage of the non-resistive load driver to a threshold level, whereas the low-drive circuit may modify the output voltage of the non-resistive load driver to approximate an input voltage of the non-resistive load driver, and compensate any leakage associated with the non-resistive loads to provide a substantially constant output voltage. The low-drive circuit consumes less current than the high-drive circuit. The non-resistive load driver consumes less power and use less chip space. Alternatively, the non-resistive load driver may be implemented using a single driver with multiple modes, such as a low-drive mode and a high-drive mode, by changing a bias current of the non-resistive load driver between a high current mode and a low current mode.

摘要翻译： 本发明的实施例涉及一种驱动非阻性负载的方法和装置。 非阻性负载驱动器可以包括两个或更多个驱动器，例如高驱动电路和低驱动电路，以驱动轨至轨输出电压并将输出电压稳定在基本上恒定的水平。 高驱动电路可以将非阻力负载驱动器的输出电压驱动到阈值电平，而低驱动电路可以修改非阻性负载驱动器的输出电压以近似非阻性负载驱动器的输入电压 负载驱动器，并补偿与非电阻负载相关的任何泄漏，以提供基本恒定的输出电压。 低驱动电路比高驱动电路消耗更少的电流。 非阻性负载驱动器消耗更少的功率并减少芯片空间。 或者，可以使用具有多种模式的单个驱动器来实现非阻性负载驱动器，例如低驱动模式和高驱动模式，通过改变非电阻负载驱动器在高电流模式之间的偏置电流 和低电流模式。

公开(公告)号：US20110234264A1

公开(公告)日：2011-09-29

申请号：US13100876

申请日：2011-05-04

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： H03K3/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： A method for driving a load includes driving a load to an initial voltage within a voltage window, the voltage window based on an input voltage and an offset voltage, and driving the load to approximately the input voltage.

摘要翻译： 用于驱动负载的方法包括将负载驱动到电压窗内的初始电压，基于输入电压和偏移电压的电压窗口，并将负载驱动到大约输入电压。

公开(公告)号：US08570073B2

公开(公告)日：2013-10-29

申请号：US13100876

申请日：2011-05-04

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： H03B1/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： A method for driving a load includes driving a load to an initial voltage within a voltage window, the voltage window based on an input voltage and an offset voltage, and driving the load to approximately the input voltage.

摘要翻译： 用于驱动负载的方法包括将负载驱动到电压窗内的初始电压，基于输入电压和偏移电压的电压窗口，并将负载驱动到大约输入电压。

公开(公告)号：US08035401B2

公开(公告)日：2011-10-11

申请号：US11768677

申请日：2007-06-26

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： G01R27/26 ,  G01R35/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： A self-calibration system includes a variable current source to generate a default source current for charging a capacitive load, and a load charge calibrator to detect a voltage associated with the capacitive load when charged by the default source current, and to generate a current control feedback according to the detected voltage and a desired charged voltage of the capacitive load, the current control feedback to indicate to the variable current source a charge current capable of charging the capacitive load to the desired charged voltage.

摘要翻译： 自校准系统包括可变电流源以产生用于为容性负载充电的默认电流源，以及负载电荷校准器，用于当由默认电源电流充电时检测与电容性负载相关联的电压，并且产生电流控制 根据检测到的电压和所需的电容性负载的充电电压进行反馈，电流控制反馈以向可变电流源指示能够将电容性负载充电到期望的充电电压的充电电流。

公开(公告)号：US20080259065A1

公开(公告)日：2008-10-23

申请号：US11864137

申请日：2007-09-28

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： G09G5/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a configurable LCD driver system having a plurality of configurable LCD drivers. Each LCD driver may be configured as a common or segment driver by selecting a drive voltage from an appropriate set of drive voltages associated with a common or segment driver in accordance with certain parameters, such as whether a user may configure the LCD driver as a common driver or segment driver, a multiplex ratio, and/or bias ratio of an LCD panel. The drive time and drive strength associated with the LCD driver may also be configurable. The selected drive voltage may be provided to a drive buffer to output an LCD drive voltage waveform for driving one or more segments or pixels in an LCD panel. A memory may store appropriate display data for both the segment and common drivers to control the output drive capability of the LCD driver.

摘要翻译： 本发明的实施例涉及具有多个可配置LCD驱动器的可配置LCD驱动器系统。 每个LCD驱动器可以被配置为公共或段驱动器，通过根据某些参数（例如用户是否可以将LCD驱动器配置为公共的）从与公共或段驱动器相关联的适当的驱动电压组中选择驱动电压 驱动器或段驱动器，多路复用比率和/或LCD面板的偏置比。 与LCD驱动器相关的驱动时间和驱动强度也可以是可配置的。 可以将所选择的驱动电压提供给驱动缓冲器，以输出用于驱动LCD面板中的一个或多个段或像素的LCD驱动电压波形。 存储器可以存储用于段和公共驱动器的适当的显示数据，以控制LCD驱动器的输出驱动能力。

公开(公告)号：US08902131B2

公开(公告)日：2014-12-02

申请号：US11864137

申请日：2007-09-28

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： G09G3/18 ,  G09G3/36 ,  H03K19/00 ,  H03K19/003

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a configurable LCD driver system having a plurality of configurable LCD drivers. Each LCD driver may be configured as a common or segment driver by selecting a drive voltage from an appropriate set of drive voltages associated with a common or segment driver in accordance with certain parameters, such as whether a user may configure the LCD driver as a common driver or segment driver, a multiplex ratio, and/or bias ratio of an LCD panel. The drive time and drive strength associated with the LCD driver may also be configurable. The selected drive voltage may be provided to a drive buffer to output an LCD drive voltage waveform for driving one or more segments or pixels in an LCD panel. A memory may store appropriate display data for both the segment and common drivers to control the output drive capability of the LCD driver.

摘要翻译： 本发明的实施例涉及具有多个可配置LCD驱动器的可配置LCD驱动器系统。 每个LCD驱动器可以被配置为公共或段驱动器，通过根据某些参数（例如用户是否可以将LCD驱动器配置为公共的），从与公共或段驱动器相关联的适当的驱动电压组中选择驱动电压 驱动器或段驱动器，多路复用比率和/或LCD面板的偏置比。 与LCD驱动器相关的驱动时间和驱动强度也可以是可配置的。 可以将所选择的驱动电压提供给驱动缓冲器，以输出用于驱动LCD面板中的一个或多个段或像素的LCD驱动电压波形。 存储器可以存储用于段和公共驱动器的适当的显示数据，以控制LCD驱动器的输出驱动能力。

公开(公告)号：US20080258797A1

公开(公告)日：2008-10-23

申请号：US11843216

申请日：2007-08-22

申请人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

发明人： David Wright ,  Jason Muriby ,  Erhan Hancioglu

IPC分类号： H03L5/00

CPC分类号： H03K17/687 ,  H03K19/0016 ,  H03K19/00369

摘要： Embodiments of the invention relate to a method and apparatus to drive non-resistive loads. The non-resistive load driver may include two or more drivers, such as a high-drive circuit and a low-drive circuit, to drive rail-to-rail output voltages and to stabilize the output voltages at a substantially constant level. The high-drive circuit may drive the output voltage of the non-resistive load driver to a threshold level, whereas the low-drive circuit may modify the output voltage of the non-resistive load driver to approximate an input voltage of the non-resistive load driver, and compensate any leakage associated with the non-resistive loads to provide a substantially constant output voltage. The low-drive circuit consumes less current than the high-drive circuit. The non-resistive load driver consumes less power and use less chip space. Alternatively, the non-resistive load driver may be implemented using a single driver with multiple modes, such as a low-drive mode and a high-drive mode, by changing a bias current of the non-resistive load driver between a high current mode and a low current mode.

摘要翻译： 本发明的实施例涉及一种驱动非阻性负载的方法和装置。 非阻性负载驱动器可以包括两个或更多个驱动器，例如高驱动电路和低驱动电路，以驱动轨至轨输出电压并将输出电压稳定在基本上恒定的水平。 高驱动电路可以将非阻力负载驱动器的输出电压驱动到阈值电平，而低驱动电路可以修改非阻性负载驱动器的输出电压以近似非阻性负载驱动器的输入电压 负载驱动器，并补偿与非电阻负载相关的任何泄漏，以提供基本恒定的输出电压。 低驱动电路比高驱动电路消耗更少的电流。 非阻性负载驱动器消耗更少的功率并减少芯片空间。 或者，可以使用具有多种模式的单个驱动器来实现非阻性负载驱动器，例如低驱动模式和高驱动模式，通过改变非电阻负载驱动器在高电流模式之间的偏置电流 和低电流模式。