High-potential output stage
    11.
    发明申请
    High-potential output stage 有权
    高电位输出级

    公开(公告)号:US20060132478A1

    公开(公告)日:2006-06-22

    申请号:US11282311

    申请日:2005-11-18

    Abstract: A high-potential output stage includes an output circuit to power a load with a variable high potential when it receives a low-level active input logic signal. It also includes a driving circuit which produces a high-level control logic signal as a function of the input logic signal to drive the output circuit which is powered by a DC high potential. The output stage also synchronizes the input logic signal with variations of the variable high potential.

    Abstract translation: 高电位输出级包括输出电路,用于在接收到低电平有源输入逻辑信号时为具有可变高电位的负载供电。 它还包括驱动电路,其产生作为输入逻辑信号的函数的高电平控制逻辑信号,以驱动由DC高电位供电的输出电路。 输出级还将输入逻辑信号与可变高电位的变化同步。

    Method and circuit for controlling a plasma panel
    12.
    发明授权
    Method and circuit for controlling a plasma panel 有权
    用于控制等离子面板的方法和电路

    公开(公告)号:US06853146B2

    公开(公告)日:2005-02-08

    申请号:US10110449

    申请日:2001-08-09

    CPC classification number: G09G3/293 G09G3/296 G09G2310/0275 G09G2330/025

    Abstract: A method for controlling cells of a plasma screen of array type, formed of cells arranged at the intersections of lines and columns, including the step of sequentially applying to each line an activation potential and, during the activation of a line, applying an activation potential to selected columns, in which, while a line is activated, the selected columns are non-simultaneously activated.

    Abstract translation: 一种用于控制阵列型等离子体屏的细胞的方法,由排列在线和列交点处的细胞组成,包括依次向每行施加激活电位的步骤,并且在激活线期间施加激活电位 到选定的列,其中当行被激活时,所选择的列不被同时激活。

    Method and circuit for testing the output connections of a driver
circuit for a plasma display panel
    13.
    发明授权
    Method and circuit for testing the output connections of a driver circuit for a plasma display panel 有权
    用于测试等离子体显示面板的驱动电路的输出连接的方法和电路

    公开(公告)号:US6124677A

    公开(公告)日:2000-09-26

    申请号:US405974

    申请日:1999-09-27

    CPC classification number: G09G3/006 G01R31/043 G01R31/2825

    Abstract: A method for testing output connections of at least one driver circuit that drives a plasma display panel. According to the method, at least one output of the driver circuit is switched to a high level for a predetermined time period. The output of the driver circuit is switched to a low level, and the time to discharge the output of the driver circuit with a constant discharge current is measured. It is determined whether a capacitive load is connected to the output of the driver circuit based on the measured time to discharge. In one preferred method, these steps are repeated for each of the outputs of the driver circuit. A driver circuit for driving a plasma display panel is also provided. The driver circuit includes driver output stages, and means for selectively sinking a constant discharge current from the output of at least one of the driver output stages to ground. Additionally, the driver circuit includes means for producing a measuring logic pulse whose duration is a function of a time required to discharge the output, and means for determining whether a capacitive load is connected to the output based on the measuring logic pulse.

    Abstract translation: 一种用于测试驱动等离子体显示面板的至少一个驱动电路的输出连接的方法。 根据该方法,驱动电路的至少一个输出在预定时间段内被切换到高电平。 驱动电路的输出被切换到低电平,并且测量以恒定放电电流放电驱动电路的输出的时间。 基于测量的放电时间确定容性负载是否连接到驱动器电路的输出。 在一个优选的方法中,针对驱动器电路的每个输出重复这些步骤。 还提供了用于驱动等离子体显示面板的驱动电路。 驱动器电路包括驱动器输出级,以及用于选择性地将恒定放电电流从至少一个驱动器输出级的输出吸收到地的装置。 此外,驱动器电路包括用于产生其持续时间是放电输出所需时间的函数的测量逻辑脉冲的装置,以及用于基于测量逻辑脉冲确定容性负载是否连接到输出的装置。

    Method and facility for time/voltage conversion
    14.
    发明授权
    Method and facility for time/voltage conversion 失效
    时间/电压转换的方法和设施

    公开(公告)号:US5440307A

    公开(公告)日:1995-08-08

    申请号:US97704

    申请日:1993-07-27

    CPC classification number: H03K9/08

    Abstract: A more accurate voltage-to-time and then time-to-voltage conversion is accomplished by tailoring the amplitude versus time characteristics of the pulses generated in the voltage-to-time conversion. One embodiment includes applying a ramped voltage supply to an amplifier coupled between the voltage/time converter and the time/voltage converter. The ramped supply is arranged to condition the amplitude of a portion of respective pulses to include a slope similar to the ramped voltage applied to the time/voltage converter. This tends to effect a more accurate response in the time/voltage converter.

    Abstract translation: 通过调整在电压 - 时间转换中产生的脉冲的幅度 - 时间特性来实现更准确的电压 - 时间,然后时间 - 电压转换。 一个实施例包括向连接在电压/时间转换器和时间/电压转换器之间的放大器施加斜坡电压源。 斜坡电源被布置成调节各个脉冲的一部分的幅度以包括类似于施加到时间/电压转换器的斜坡电压的斜率。 这将在时间/电压转换器中产生更准确的响应。

    Apparatus for providing contrast and/or brightness control of a video
signal
    15.
    发明授权
    Apparatus for providing contrast and/or brightness control of a video signal 失效
    用于提供视频信号的对比度和/或亮度控制的装置

    公开(公告)号:US5317401A

    公开(公告)日:1994-05-31

    申请号:US77843

    申请日:1993-06-15

    CPC classification number: G09G3/2011 G09G3/3688 H04N3/127 H04N5/57

    Abstract: The present invention is a video drive apparatus of the two ramp type which includes facility to selectively adjust the brightness and/or the contrast of an image reproduced on a display device. In this apparatus, at least one of the ramp signals is generated digitally by for example a counter. Provision is made to change the counting rate of such counter which effects a change in display contrast. Provision is also made to selectively change the phase of the ramp signal applied to the second stage relative to the start of respective pulses of the PWM signal thereby effecting brightness changes in the reproduced image.

    Abstract translation: 本发明是两种斜坡型视频驱动装置,它包括有选择地调节在显示装置上再现的图像的亮度和/或对比度的设备。 在该装置中,斜坡信号中的至少一个由例如计数器以数字方式产生。 规定了改变这种计数器的计数率,从而影响显示对比度的变化。 还提供了相对于PWM信号的相应脉冲的开始选择性地改变施加到第二级的斜坡信号的相位,从而实现再现图像中的亮度变化。

    Method of determining sound propagation
    16.
    发明授权
    Method of determining sound propagation 失效
    确定声音传播的方法

    公开(公告)号:US4480313A

    公开(公告)日:1984-10-30

    申请号:US334469

    申请日:1981-12-28

    Applicant: Eric Benoit

    Inventor: Eric Benoit

    CPC classification number: G01N29/024 G01H5/00

    Abstract: A method of and an apparatus for determining sound propagation speed in a medium which is subject to variations in this speed. A measuring tube containing the medium is energized by a loudspeaker (ultraacoustic transducers) with a controllable energizing frequency in resonance with the measuring tube containing a column of the medium to be evaluated. The resonant output frequency is detected and modulated with a low frequency signal and the mean value of the modulated output signal is formed and counted. For a predetermined count, the elapsed time is measured and from this value the propagation velocity is calculated.

    Abstract translation: 用于确定在该速度变化的介质中的声音传播速度的方法和装置。 含有介质的测量管由具有可控激励频率的扬声器(超声换能器)激励,该测量管与包含待评估介质柱的测量管共振。 用低频信号检测和调制谐振输出频率,并形成并计数调制输出信号的平均值。 对于预定的计数,测量经过的时间,并从该值计算传播速度。

    Image display on an array screen
    18.
    发明授权
    Image display on an array screen 有权
    图像显示在阵列屏幕上

    公开(公告)号:US07463252B2

    公开(公告)日:2008-12-09

    申请号:US10622417

    申请日:2003-07-18

    CPC classification number: G09G3/3208 G09G5/346 G09G2320/043 G09G2320/046

    Abstract: A method and circuit for displaying an image by activation of pixels of an array screen based on an image stored in digital form in memory point rows of a frame memory, having a stand-by mode that provides, at a frequency proportional to the display frequency, a cyclic succession of offset values; and for each row address of the frame memory, activating pixels of a screen line associated with said address offset by a same offset value based on the read states of the row associated with the address, and/or activating pixels of a screen line associated with the row address based on the read states of the frame memory row associated with the address offset by a same offset value.

    Abstract translation: 一种用于通过基于以数字形式存储的图像通过激活阵列屏幕的像素来显示图像的方法和电路,该帧存储器的存储器点行具有备用模式,其以与显示频率成比例的频率 ,偏移值的循环连续; 并且对于帧存储器的每个行地址,基于与地址相关联的行的读取状态来激活与所述地址偏移相关联的屏幕线的像素相同的偏移值,和/或激活与该地址相关联的屏幕线的像素 基于与地址偏移相关联的帧存储器行的读取状态相同的偏移值的行地址。

    Control circuit drive circuit for a plasma panel
    19.
    发明授权
    Control circuit drive circuit for a plasma panel 有权
    等离子面板的控制电路驱动电路

    公开(公告)号:US07122968B2

    公开(公告)日:2006-10-17

    申请号:US10169895

    申请日:2001-11-14

    CPC classification number: G09G3/296 G09G3/293 G09G2330/06

    Abstract: The invention concerns a drive circuit for a plasma panel consisting of cells arranged at the intersections of lines and columns, comprising, for each column of the panel, a column drive unit (14′) for selecting the column by applying a voltage window, the column having a different capacitance (C2) depending on whether or not the neighboring columns are selected, each drive unit (14′) comprising first elements (T1, C, CS1) for changing the capacitance in a first predetermined time interval during the low-to-high transition of the voltage window, and second elements (T2, 28) for discharging said capacitance in a second predetermined time interval during the high-to-low transition of the voltage window, the second elements being controlled on the basis of an estimation of the capacitance obtained from data (Qi−1, Qi+1) indicating whether or not the neighboring columns of said columns have been selected.

    Abstract translation: 本发明涉及一种用于等离子体面板的驱动电路,其由布置在线和列的交叉点处的单元组成,包括对于面板的每列,列驱动单元(14'),用于通过施加电压窗选择列, 每个驱动单元(14')包括用于在第一预定时间间隔期间改变电容的第一元件(T 1,C,CS 1),其中第一元件(T 1,C,CS 1) 电压窗的低到高的转变,以及用于在电压窗的高电平到低电平转变期间以第二预定时间间隔放电所述电容的第二元件(T 2,28),第二元件被控制在 从用于指示是否已经选择了所述列的相邻列的数据(Qi- 1,Qi + 1)获得的电容的估计的基础。

    Method for the control of an image display screen using the principle of
the modulation of duration of light emission and display device
implementing the method
    20.
    发明授权
    Method for the control of an image display screen using the principle of the modulation of duration of light emission and display device implementing the method 失效
    使用发光持续时间的调制原理和实现该方法的显示装置来控制图像显示屏的方法

    公开(公告)号:US06034654A

    公开(公告)日:2000-03-07

    申请号:US803282

    申请日:1997-02-20

    CPC classification number: G09G3/2029 G09G2320/0266 G09G2330/025 G09G3/288

    Abstract: A method for the control of a display screen whose pixels are cells producing light is used to minimize certain image defects known as excess brightness defects caused by major variations in the number of cells activated. For this purpose, the invention operates on the sub-division of the activation times of the cells during a given cycle time to reduce a time during which cells, selected as a function of their luminance level, are the only ones to be activated. The disclosed method can be applied especially to the control of alternating type plasma panels.

    Abstract translation: 用于控制其像素是产生光的单元的显示屏幕的方法用于最小化被称为由激活的单元数量的主要变化引起的过度亮度缺陷的某些图像缺陷。 为此,本发明在给定的循环时间内对单元的激活时间进行细分,以减少在其中被选择作为其亮度级的函数的单元是仅被激活的单元的时间。 所公开的方法可以特别适用于交替型等离子体面板的控制。

Patent Agency Ranking