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1. 发明授权

US07102610B2 Display system with frame buffer and power saving sequence 有权
公开(公告)号：US07102610B2
公开(公告)日：2006-09-05
申请号：US10421646
申请日：2003-04-21
申请人： Christopher A. Ludden
发明人： Christopher A. Ludden
IPC分类号： G09G3/36
CPC分类号： G09G3/3614 , G09G3/3648 , G09G3/3677 , G09G2310/0224 , G09G2310/0289 , G09G2330/021
摘要： A method is arranged to process a frame for an LCD with a modified polarity pattern. The pattern employs a polarity reversal scheme that results in line inversion and/or dot inversion patterns that are observable by pixel locations within the frame. The drive polarity for the column drivers in the LCD is toggled according to the modified polarity pattern. The scanning sequence for each row on the display is modified for cooperation with the pattern. A first subframe is scanned during a first interval while applying a first set of drive polarities. A second subframe is scanned during a second interval that is non-overlapping with the first time interval. The application of the method enables the column drivers in the LCD to operate with reduced power while retaining the benefits of line and dot inversion techniques.

2. 发明授权

US06861886B1 Clock deskew protocol using a delay-locked loop 有权
标题翻译：时钟偏移协议使用延迟锁定环路
公开(公告)号：US06861886B1
公开(公告)日：2005-03-01
申请号：US10443458
申请日：2003-05-21
申请人： Christopher A. Ludden , Richard Alexander Erhart , Mark D. Kuhns , Arif Alam
发明人： Christopher A. Ludden , Richard Alexander Erhart , Mark D. Kuhns , Arif Alam
IPC分类号： H03L7/06 , H03L7/081 , H04L7/00 , H04L7/10
CPC分类号： H03L7/0812 , H04L7/0008 , H04L7/0037 , H04L7/10
摘要： A data/clock deskewing methodology uses a delay-locked loop (DLL) circuit. The DLL circuit generates a number of clock phases in response to an input clock, where each clock phase is delayed relative to the input clock signal. The clock phases are used to sample data from a data line. The sampled data is checked against a preamble pattern (a sequence of known data). A digital deskew control block selects one of the clock phases after analyzing the results of preamble pattern check such that subsequently received data is sampled with the appropriately selected clock phase.
摘要翻译：数据/时钟偏移校正方法使用延迟锁定环（DLL）电路。 DLL电路响应于输入时钟产生多个时钟相位，其中每个时钟相位相对于输入时钟信号被延迟。时钟相位用于从数据线采样数据。根据前导码模式（已知数据的序列）检查采样数据。数字歪斜控制块在分析前导码模式检查的结果之后选择一个时钟相位，以便随后接收的数据被采用适当选择的时钟相位。

3. 发明授权

US5703617A Signal driver circuit for liquid crystal displays 失效
标题翻译：液晶显示器的信号驱动电路
公开(公告)号：US5703617A
公开(公告)日：1997-12-30
申请号：US240026
申请日：1994-05-09
申请人： Michael J. Callahan, Jr. , Christopher A. Ludden
发明人： Michael J. Callahan, Jr. , Christopher A. Ludden
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/2011 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2310/0281 , G09G2310/0289
摘要： The present invention relates to a signal driver circuit for driving a liquid crystal display panel. The signal driver circuit provides level shifting within the circuit to lower the power consumption of a liquid crystal display module while still providing a wide analog voltage range to the liquid crystal display elements. The decoding circuits utilize a strand of abutting decode input transistors which are connected in series. Further to reduce the physical size of the decoding circuits, multiple decode circuits may share circuitry that decodes the most significant bits of a data word. A cell layout is utilized such that the most significant bits data are bused into the cell through metal lines and the least significant bits are bused in polysilicon that also operates as the gate of the decode input transistors. Moreover, the decode cell input transistors may all be of the same conductivity type.
摘要翻译：本发明涉及用于驱动液晶显示面板的信号驱动电路。信号驱动器电路在电路内提供电平移位以降低液晶显示模块的功耗，同时仍向液晶显示元件提供宽的模拟电压范围。解码电路利用串联连接的解码输入晶体管。为了减少解码电路的物理尺寸，多个解码电路可以共享解码数据字的最高有效位的电路。利用单元格布局，使得最高有效位数据通过金属线被插入到单元中，并且最低有效位被叠加在也用作解码输入晶体管的栅极的多晶硅中。此外，解码单元输入晶体管可以都是相同的导电类型。

4. 发明授权

US4967183A Method of intrusion detection over a wide area 失效
标题翻译：广泛的入侵检测方法
公开(公告)号：US4967183A
公开(公告)日：1990-10-30
申请号：US195748
申请日：1988-05-18
申请人： George C. D'Ambrosia , Christopher A. Ludden
发明人： George C. D'Ambrosia , Christopher A. Ludden
IPC分类号： G01C3/06 , G01S7/481 , G01S17/02 , G01S17/87 , G01S17/89 , G01V8/12 , G08B13/181 , G08B13/187
CPC分类号： G01S17/026 , G01S17/87 , G01S17/89 , G01S7/4811 , G08B13/187
摘要： A method of scanning intrusion detection which is capable of monitoring a large volume of either interior or exterior space from a single relatively inexpensive unit. This method of intrusion detection comprises the steps of scanning a beam of infrared radiation about a field of view and receiving the radiation of the beam reflected from the field of view, generating a signal indicative of the distance from the device at which the beam has been reflected for each of a plurality of azimuthal sectors of the field of view, storing a plurality of reference signals which are indicative of the distance of reflection of the beam from each azimuthal sector of the field of view during a reference time period, comparing the signals from a selected time period with the reference signals, and generating an output signal if one of the signals is different from the respective reference signal.
摘要翻译：一种扫描入侵检测的方法，其能够从单个相对便宜的单元监测内部空间或外部空间的大量。这种入侵检测方法包括以下步骤：围绕视野扫描一束红外线辐射，并接收从视场反射的光束的辐射，产生一个信号，该信号指示与该光束已经被束缚的装置的距离对于视场的多个方位角扇区中的每一个反射，存储指示在参考时间段期间来自视场的每个方位角扇区的波束的反射距离的多个参考信号，比较信号从参考信号的选定时间段开始，并且如果信号中的一个与相应的参考信号不同，则产生输出信号。

5. 发明授权

US07843422B1 Apparatus and method for ambient light compensation for backlight control in small format displays 有权
标题翻译：用于环境光补偿的装置和方法，用于小格式显示器中的背光控制
公开(公告)号：US07843422B1
公开(公告)日：2010-11-30
申请号：US11289103
申请日：2005-11-29
申请人： Christopher A. Ludden , Imre Knausz
发明人： Christopher A. Ludden , Imre Knausz
IPC分类号： G09G5/00
CPC分类号： G09G3/3406 , G09G2320/0247 , G09G2320/064 , G09G2360/144
摘要： An ambient light compensation circuit for controlling a backlight brightness is provided. The circuit automatically adjusts the LCD backlight brightness based on a reading of the ambient light. The circuit includes a non-linear ADC and a backlight control circuit. The non-linear ADC provides a digital signal from a photodiode signal. The backlight control circuit adjusts the brightness of the backlighting based on the digital signal. The brightness adjustment is performed gradually, e.g., one significant bit of the digital signal per second.
摘要翻译：提供了用于控制背光亮度的环境光补偿电路。电路根据环境光的读数自动调整LCD背光亮度。该电路包括非线性ADC和背光控制电路。非线性ADC提供来自光电二极管信号的数字信号。背光控制电路基于数字信号来调整背光的亮度。逐渐执行亮度调整，例如每秒数字信号的一个有效位。

6. 发明申请

US20100277505A1 REDUCTION IN LATENCY BETWEEN USER INPUT AND VISUAL FEEDBACK 有权
标题翻译：用户输入和视觉反馈之间的延迟减少
公开(公告)号：US20100277505A1
公开(公告)日：2010-11-04
申请号：US12770415
申请日：2010-04-29
申请人： Christopher A. Ludden , Thomas A. Mackin , Shawn P. Day , David W. Gillespie
发明人： Christopher A. Ludden , Thomas A. Mackin , Shawn P. Day , David W. Gillespie
IPC分类号： G09G5/00
CPC分类号： G06F3/0416 , G06F3/041 , G06F3/048 , G06F3/0486 , G06F3/04886 , G09G5/006 , H01L27/323
摘要： A system comprising a display screen configured for displaying images, a touch sensor having a sensing region, a host processing system and a touch screen control system. The touch screen control system comprising touch sensor control circuitry configured to operate the touch sensor and display control circuitry configured to operate the display screen. The display circuitry comprising a first memory configured to hold a primary image and a second memory configured to hold a secondary image and display refresh circuitry. The display refresh circuitry configured to update the display screen, and in response to the user input and without requiring intervention by the host processing system, generate a blended image comprising the primary image and the secondary image, and update the display screen with the blended image.
摘要翻译：一种包括被配置为显示图像的显示屏幕的系统，具有感测区域的触摸传感器，主机处理系统和触摸屏控制系统。触摸屏控制系统包括触摸传感器控制电路，其被配置为操作触摸传感器和配置成操作显示屏的显示控制电路。所述显示电路包括被配置为保持主图像的第一存储器和被配置为保持次级图像和显示刷新电路的第二存储器。显示刷新电路被配置为更新显示屏幕，并且响应于用户输入而不需要主机处理系统的干预，生成包括主图像和次图像的混合图像，并且用混合图像更新显示屏幕。

7. 发明授权

US06970152B1 Stacked amplifier arrangement for graphics displays 有权
标题翻译：用于图形显示的堆叠放大器布置
公开(公告)号：US06970152B1
公开(公告)日：2005-11-29
申请号：US10287900
申请日：2002-11-05
申请人： Marshall J. Bell , Christopher A. Ludden , Richard Alexander Erhart
发明人： Marshall J. Bell , Christopher A. Ludden , Richard Alexander Erhart
IPC分类号： G09G3/36 , G09G5/00
CPC分类号： G09G3/3688 , G09G3/3655 , G09G2310/0235 , G09G2330/023
摘要： A column driver for a graphics display has reduced power consumption by sharing power between upper and lower column amplifiers. The upper column amplifier operates over an upper supply range, while the lower column amplifier operates over a lower supply range. The upper and lower amplifiers have the substantially the same quiescent operating current such that the total operating current for the column drivers in the graphics display is reduced by a factor of two. Each column amplifier can be driven over half of the power-supply range such that lower voltage amplifiers may be employed for the column driver amplifiers.
摘要翻译：用于图形显示的列驱动器通过在上下列放大器之间共享功率来降低功耗。上列放大器在较高电源范围内工作，而下列放大器在较低电源范围内工作。上部和下部放大器具有基本上相同的静态工作电流，使得图形显示器中的列驱动器的总工作电流减少了2倍。每个列放大器可以驱动超过一半的电源范围，使得可以使用较低电压放大器用于列驱动放大器。

8. 发明授权

US5245398A Time-multiplexed multi-zone rangefinder 失效
标题翻译：时间多通道多区域范围
公开(公告)号：US5245398A
公开(公告)日：1993-09-14
申请号：US719181
申请日：1991-06-21
申请人： Christopher A. Ludden
发明人： Christopher A. Ludden
IPC分类号： G01B11/00 , G01C3/06 , G01S17/46 , G02B7/32
CPC分类号： G01S17/48 , G02B7/32
摘要： A low cost, reflectivity insensitive rangefinder for performing time-multiplexed multi-zone auto-ranging comprises a light projecting means energizable for projecting a beam of light to illuminate a spot on an object in a scene. A linear array of N photosensitive elements views the scene and produces N photosignals representing the brightness of the scene, wherein each photosensitive element corresponds to one of N discrete subject distance zones, in sequence, from a far zone to a near zone. A control signal generating means generates process control signals for initiating intermediate zone ranging operations. A selection signal supply means supplies selection signals for effectuating a time-multiplexed multi-zone ranging operation. An analog multiplexer means, responsive to the selection signals, inputs the N photosignals, in parallel, and outputs selected time-multiplexed pairs of photosignals. Each pair of photosignals represents, in sequence, the scene brightness of an intermediate FAR zone and an intermediate NEAR zone. Signal processing electronics responsive to the pairs of photosignals and responsive to the process control signals periodically energizes the light projecting means and produces N-1 intermediate FAR/NEAR zone determinations. A final subject distance selection means selects a final subject distance zone from the intermediate zone determinations.
摘要翻译：用于执行时分复用多区域自动测距的低成本，反射率不灵敏测距装置包括能够投射光束以照亮场景中物体上的斑点的光投射装置。 N个感光元件的线性阵列观看场景，并且产生表示场景的亮度的N个光信号，其中每个光敏元件依次从远区域到近区域对应于N个离散对象距离区域中的一个。控制信号发生装置产生用于启动中间区测距操作的过程控制信号。选择信号提供装置提供用于实现时间多路复用多区域测距操作的选择信号。模拟多路复用器装置响应于选择信号并入输入N个光信号，并输出所选择的时间复用的光信号对。每对光信号依次表示中间FAR区域和中间近区域的场景亮度。响应于光信号对并且响应于过程控制信号的信号处理电子器件周期地激励光投射装置并产生N-1个中间FAR /近区确定。最终被摄体距离选择装置从中间区域确定中选择最终被摄体距离区域。

9. 发明授权

US4949074A Method of intrusion detection 失效
标题翻译：入侵检测方法
公开(公告)号：US4949074A
公开(公告)日：1990-08-14
申请号：US195747
申请日：1988-05-18
申请人： George C. D'Ambrosia , Christopher A. Ludden
发明人： George C. D'Ambrosia , Christopher A. Ludden
IPC分类号： G01C3/06 , G01S17/02 , G01S17/46 , G01S17/48 , G08B13/181 , G08B13/187
CPC分类号： G01S17/48 , G01S17/026 , G08B13/187
摘要： A method of intrusion detection which comprises the steps of: projecting a beam of infrared radiation toward a field of view from a detection device and receiving the radiation of the beam reflected from the field of view, determining the distance from the device at which the beam is reflected by the field of view, generating a signal indicative of the distance from the device at which the beam has been reflected by the field of view during a selected time period, storing a reference signal which is indicative of the distance of reflection of the beam from the field of view during a reference time period, comparing a signal from a selected time period with the reference signal, and generating an output signal if the signal differs from the reference signal in a preselected manner.
摘要翻译：一种入侵检测方法，包括以下步骤：从一个检测装置向一个视场投射一束红外辐射，并接收从该视场反射的光束的辐射，确定该光束的装置的距离由视场反射，产生指示在所选时间段期间光束已经被反射的视场的设备的距离的信号，存储指示反射的距离的参考信号在参考时间段期间从视场的光束，将来自所选择的时间段的信号与参考信号进行比较，以及如果信号以预选的方式与参考信号不同，则产生输出信号。

10. 发明授权

US08416173B2 Display system with frame buffer and power saving sequence 有权
标题翻译：显示系统具有帧缓冲和省电顺序
公开(公告)号：US08416173B2
公开(公告)日：2013-04-09
申请号：US11470247
申请日：2006-09-05
申请人： Christopher A. Ludden
发明人： Christopher A. Ludden
IPC分类号： G09G3/36
CPC分类号： G09G3/3614 , G09G3/3648 , G09G3/3677 , G09G2310/0224 , G09G2310/0289 , G09G2330/021
摘要： A method is arranged to process a frame for an LCD with a modified polarity pattern. The pattern employs a polarity reversal scheme that results in line inversion and/or dot inversion patterns that are observable by pixel locations within the frame. The drive polarity for the column drivers in the LCD is toggled according to the modified polarity pattern. The scanning sequence for each row on the display is modified for cooperation with the pattern. A first subframe is scanned during a first interval while applying a first set of drive polarities. A second subframe is scanned during a second interval that is non-overlapping with the first time interval. The application of the method enables the column drivers in the LCD to operate with reduced power while retaining the benefits of line and dot inversion techniques.
摘要翻译：一种用于处理具有修改的极性图案的LCD的框架的方法。该模式采用极性反转方案，其导致由框架内的像素位置可观察到的线反转和/或点反转模式。 LCD中的列驱动器的驱动极性根据修改的极性模式切换。修改显示器上每一行的扫描顺序，以与图案协作。在施加第一组驱动极性的同时，在第一间隔期间扫描第一子帧。在与第一时间间隔不重叠的第二间隔期间扫描第二子帧。该方法的应用使得LCD中的列驱动器能够以较低的功率运行，同时保留了线和点反转技术的优点。

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