Circuitry and method for reducing power consumption in gamma correction circuitry
    1.
    发明申请
    Circuitry and method for reducing power consumption in gamma correction circuitry 有权
    用于降低伽马校正电路中功耗的电路和方法

    公开(公告)号:US20100156944A1

    公开(公告)日:2010-06-24

    申请号:US12317119

    申请日:2008-12-19

    IPC分类号: G09G5/10 G09G3/36

    摘要: Gamma curve correction circuitry includes first (24-1,2 . . . 11) and second (24-12,13 . . . 22) groups of gamma correction buffers and corresponding DACs (28-1,2 . . . 22). Each buffer has an input coupled to an output of a corresponding DAC, respectively, and an output coupled by a corresponding output conductor, respectively, to a corresponding resistor string tap point. A midrange voltage (V30) is produced with a value approximately midway between a first voltage (VDD) and a second voltage (GND) and is coupled to provide power to the first and second groups of buffers. The first voltage is coupled to a first voltage terminal of a first buffer (24-11) of the first group. A second voltage terminal of the first buffer is coupled to the midrange voltage. The midrange voltage is coupled to a first voltage terminal of a first buffer (24-12) of the second group. A second voltage terminal of the first buffer of the second group is coupled to the second voltage.

    摘要翻译: 伽马曲线校正电路包括第一(24-1,2.1,11)和第二(24-12,13 ...)组伽马校正缓冲器和相应的DAC(28-1,2 ... 22)。 每个缓冲器分别具有耦合到对应的DAC的输出的输入端和由相应的输出导体分别耦合到对应的电阻器串点的输出端。 产生中间电压(V30),其值大约在第一电压(VDD)和第二电压(GND)之间的中间,并被耦合以向第一和第二组缓冲器提供电力。 第一电压耦合到第一组的第一缓冲器(24-11)的第一电压端子。 第一缓冲器的第二电压端子耦合到中频电压。 中间电压耦合到第二组的第一缓冲器(24-12)的第一电压端子。 第二组的第一缓冲器的第二电压端子耦合到第二电压。

    Method of limiting charge pressure

    公开(公告)号:US06584772B2

    公开(公告)日:2003-07-01

    申请号:US10012744

    申请日:2001-11-05

    IPC分类号: F02B3344

    摘要: In a method of limiting the charge pressure of an internal combustion engine charged using an exhaust gas turbocharger, a control unit performs an actual value/setpoint value comparison of a controlled variable with a predefined limit value and generates or limits actuating signals for an actuator drive of an actuator acting upon the controlled variable. The setpoint value is taken from a characteristic map memory as a function of the instantaneous operating state of the internal combustion engine. In order to allow the internal combustion engine to operate at the highest possible charge pressure and corresponding power output, measured values of the temperature and of the pressure upstream and downstream, respectively, from a compressor of the exhaust gas turbocharger are used for reading the limit value from the characteristic map memory.

    Method and apparatus for setting gamma correction voltages for LCD source drivers
    3.
    发明授权
    Method and apparatus for setting gamma correction voltages for LCD source drivers 有权
    用于设置LCD源驱动器的伽马校正电压的方法和装置

    公开(公告)号:US07554517B2

    公开(公告)日:2009-06-30

    申请号:US11079357

    申请日:2005-03-14

    IPC分类号: G09G3/36

    摘要: A gamma reference voltage generator (10B) for an LCD display includes a control interface logic circuit (48) having an output bus coupled to inputs of a first register (46) having outputs coupled to inputs of a second register (42) the outputs of which are coupled to corresponding inputs of plurality of DACs (28). The control interface logic circuit receives gray scale codes representative of gamma reference voltages and transfers the codes via the output bus into the first register and controls further transfer of the codes to inputs of the DACs to instantaneously or rapidly update gamma correction voltages applied to the LCD display.

    摘要翻译: 用于LCD显示器的伽马参考电压发生器(10B)包括控制接口逻辑电路(48),其具有耦合到具有耦合到第二寄存器(42)的输入的输出的第一寄存器(46)的输入的输出总线, 其耦合到多个DAC(28)的相应输入端。 控制接口逻辑电路接收代表伽马参考电压的灰度代码,并将代码经由输出总线传送到第一寄存器中,并控制进一步传输代码到DAC的输入端以瞬时或快速更新施加到LCD的伽马校正电压 显示。

    Method and apparatus for setting gamma correction voltages for LCD source drivers
    4.
    发明申请
    Method and apparatus for setting gamma correction voltages for LCD source drivers 有权
    用于设置LCD源驱动器的伽马校正电压的方法和装置

    公开(公告)号:US20060202929A1

    公开(公告)日:2006-09-14

    申请号:US11079357

    申请日:2005-03-14

    IPC分类号: G09G3/36

    摘要: A gamma reference voltage generator (10B) for an LCD display includes a control interface logic circuit (48) having an output bus coupled to inputs of a first register (46) having outputs coupled to inputs of a second register (42) the outputs of which are coupled to corresponding inputs of plurality of DACs (28). The control interface logic circuit receives gray scale codes representative of gamma reference voltages and transfers the codes via the output bus into the first register and controls further transfer of the codes to inputs of the DACs to instantaneously or rapidly update gamma correction voltages applied to the LCD display.

    摘要翻译: 用于LCD显示器的伽马参考电压发生器(10B)包括控制接口逻辑电路(48),其具有耦合到具有耦合到第二寄存器(42)的输入的输出的第一寄存器(46)的输入的输出总线, 其耦合到多个DAC(28)的相应输入端。 控制接口逻辑电路接收代表伽马参考电压的灰度代码,并将代码经由输出总线传送到第一寄存器中,并控制进一步传输代码到DAC的输入端以瞬时或快速更新施加到LCD的伽马校正电压 显示。

    Process for preparing sulfate-containing basic solutions of polyaluminumchloride
    5.
    发明授权
    Process for preparing sulfate-containing basic solutions of polyaluminumchloride 失效
    制备聚氯化铝的含硫酸盐碱性溶液的方法

    公开(公告)号:US06241958B1

    公开(公告)日:2001-06-05

    申请号:US08107656

    申请日:1993-08-12

    IPC分类号: C01B1745

    摘要: The process of preparing a solution of basic sulfate-containing polyaluminum chloride includes digesting an aluminum-containing substance with hydrochloric acid to form a resulting solution and an insoluble residue; filtering the resulting solution to separate the insoluble residue therefrom and to form a solids-free solution; concentrating the solids-free solution by evaporation to form a concentrated solution having an AlCl3 content of about 30 percent by weight; recovering AlCl3·6 H2O from the concentrated solution by crystallization; thermally decomposing the recovered AlCl3·6 H2O by heating at 150 to 200° C. so as to form a solid basic aluminum chloride containing Al and OH in a molar ratio of OH/Al of 1.35:1 to 2.25:1; dissolving the solid basic aluminum chloride in an aqueous sulfuric acid solution and heat-treating at 40 ° C. to 70 ° C. for 1 to 3 hours to form a solution of basic sulfate-containing polyaluminum chloride having a sulfate content of 1 to 6 percent by weight, an aluminum concentration of 3 to 10 percent by weight and a molar ratio of OH/Al in the solution of the basic sulfate-containing polyaluminum chloride from 1.05:1 to 1.95:1.

    摘要翻译: 制备含碱性硫酸盐的聚氯化铝溶液的方法包括用盐酸消化含铝物质以形成所得溶液和不溶残留物; 过滤所得溶液以从其中分离不溶性残余物并形成无固体的溶液; 通过蒸发浓缩无固体溶液以形成AlCl 3含量为约30重量%的浓缩溶液; 通过结晶从浓缩溶液中回收AlCl3.6H2O; 通过在150至200℃下加热热分解回收的AlCl 3·6H 2 O,以形成OH / Al摩尔比为1.35:1至2.25:1的Al和OH的固体碱性氯化铝; 将固体碱性氯化铝溶解在硫酸水溶液中,并在40℃至70℃下热处理1至3小时,以形成硫酸盐含量为1至6的含碱性硫酸盐的聚氯化铝溶液 重量百分比,铝浓度为3〜10重量%,碱性硫酸盐聚合氯化铝溶液中OH / Al的摩尔比为1.05:1〜1.95:1。

    Circuitry and method for reducing power consumption in gamma correction circuitry
    6.
    发明授权
    Circuitry and method for reducing power consumption in gamma correction circuitry 有权
    用于降低伽马校正电路中功耗的电路和方法

    公开(公告)号:US08610658B2

    公开(公告)日:2013-12-17

    申请号:US12317119

    申请日:2008-12-19

    IPC分类号: G09G3/36

    摘要: Gamma curve correction circuitry includes first (24-1,2 . . . 11) and second (24-12,13 . . . 22) groups of gamma correction buffers and corresponding DACs (28-1,2 . . . 22). Each buffer has an input coupled to an output of a corresponding DAC, respectively, and an output coupled by a corresponding output conductor, respectively, to a corresponding resistor string tap point. A midrange voltage (V30) is produced with a value approximately midway between a first voltage (VDD) and a second voltage (GND) and is coupled to provide power to the first and second groups of buffers. The first voltage is coupled to a first voltage terminal of a first buffer (24-11) of the first group. A second voltage terminal of the first buffer is coupled to the midrange voltage. The midrange voltage is coupled to a first voltage terminal of a first buffer (24-12) of the second group. A second voltage terminal of the first buffer of the second group is coupled to the second voltage.

    摘要翻译: 伽马曲线校正电路包括第一(24-1,2.1,11)和第二(24-12,13 ...)组伽马校正缓冲器和相应的DAC(28-1,2 ... 22)。 每个缓冲器分别具有耦合到对应的DAC的输出的输入端和由相应的输出导体分别耦合到对应的电阻器串点的输出端。 产生中间电压(V30),其值大约在第一电压(VDD)和第二电压(GND)之间的中间,并被耦合以向第一和第二组缓冲器提供电力。 第一电压耦合到第一组的第一缓冲器(24-11)的第一电压端子。 第一缓冲器的第二电压端子耦合到中频电压。 中间电压耦合到第二组的第一缓冲器(24-12)的第一电压端子。 第二组的第一缓冲器的第二电压端子耦合到第二电压。