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    • 2. 发明申请
    • Camera autofocus
    • 相机自动对焦
    • US20070177860A1
    • 2007-08-02
    • US10593100
    • 2005-03-14
    • Anthony HooleyDavid RichardsJames AllanRobert LeedhamMark Shepherd
    • Anthony HooleyDavid RichardsJames AllanRobert LeedhamMark Shepherd
    • G02B7/02G11B7/00G03B17/00
    • G02B7/08G03B13/36H04N5/23212
    • A camera comprises an image sensor arranged to generate an image signal, and a lens arrangement, which focuses an image onto the image sensor, the focus being variable in accordance with a control signal applied thereto. In the case that a piezoelectric actuator experiencing hysteresis is used to drive movement of the lens arrangement to vary the focus of the image, autofocusing is achieved by applying a control signal to the piezoelectric actuator with a value at an extreme of a predetermined range and subsequently changing the control signal monotonically across the predetermined range to determine a position at which the focus quality is at an acceptable level. Thus, this position may be returned to despite the hysteresis. In the case that an encoder is arranged to encode the image signal from the image sensor into an encoded signal compressed form, the encoder is operated in two modes in which different spatial frequency components are encoded preferentially, the amount of data in one of the modes being used as the basis for autofocusing. To assist in autofocusing the position of the lens arrangement may be determined using a light source and an optical element which is fixed to and movable with the lens arrangement, the optical element being arranged so that movement of the lens arrangement causes variation in the light incident on the image sensor.
    • 相机包括被配置为产生图像信号的图像传感器和将图像聚焦到图像传感器上的透镜装置,所述焦点可根据施加到其上的控制信号而变化。 在使用经历滞后的压电致动器来驱动透镜装置的移动以改变图像的焦点的情况下,通过将控制信号施加到具有预定范围的极端处的值的压电致动器来实现自动聚焦 在预定范围内单调地改变控制信号,以确定聚焦质量处于可接受水平的位置。 因此,尽管有迟滞,仍可能返回这个位置。 在编码器被配置为将来自图像传感器的图像信号编码成编码信号压缩形式的情况下,编码器以两种模式操作,其中不同的空间频率分量被优先编码,在一种模式中的数据量 被用作自动对焦的基础。 为了帮助自动对焦,可以使用光源和固定到透镜装置并可移动的光学元件来确定透镜装置的位置,光学元件布置成使得透镜装置的移动导致光入射的变化 在图像传感器上。
    • 4. 发明申请
    • Digital cinema projector module and retrofit therefor
    • 数字电影放映机模块及其改装
    • US20070030454A1
    • 2007-02-08
    • US11500484
    • 2006-08-08
    • David Richards
    • David Richards
    • G03B17/02
    • G03B21/20G03B21/145
    • A digital cinema projector set has a digital cinema projector module including a digital light engine and a lamp assembly having a light source and a light path dimensionally configured for the module to substantially occupy space intended for a lamphouse within a console for film projection. The module may include projector guide rails which allow the module to be installed in a console having corresponding console guide rails. The module or just its lamp assembly may be sufficient for use as a light source during projection of traditional film. The light path may include a folded light path using a prism with various coatings. The set may include an electrical filter circuit which maintains current ripple at or below a level sufficient for digital projection. The module may be removed and the original light equipment returned. A method of retrofitting all film projection consoles and a system therefor are provided.
    • 一种数字影院放映机组件包括一数字影院放映机模块,包括一数字光引擎和一灯具组件,该组件具有光源和一个尺寸为该模块构成的光路,以大致占据用于胶片投影的控制台内的灯箱的空间。 模块可以包括投影仪导轨,其允许将模块安装在具有对应的控制台导轨的控制台中。 模块或其灯组件可能足以在投影传统胶片期间用作光源。 光路可以包括使用具有各种涂层的棱镜的折叠光路。 该组可以包括电流滤波器电路,其将电流纹波保持在或低于足以进行数字投影的电平。 模块可能会被拆除,并返回原始的灯具。 提供了一种改装所有胶片投影台及其系统的方法。
    • 6. 发明授权
    • Event timer
    • 事件计时器
    • US06587958B1
    • 2003-07-01
    • US09337924
    • 1999-06-22
    • Jacob K. OshinsDavid Richards
    • Jacob K. OshinsDavid Richards
    • G06F104
    • G06F9/4825
    • A system and method for generating timing signals is disclosed. The memory mapped timer system provides the ability to easily and efficiently program a timer to generate a periodic interrupt signal to a processing unit or a one-shot interrupt signal after a defined time delay. The system also provides the ability to set a programmable rollover value for a counter to define the time between interrupts. A high-resolution counter provides the ability to generate a periodic interrupt every one hundred nanoseconds.
    • 公开了一种用于产生定时信号的系统和方法。 存储器映射定时器系统提供了在定义的时间延迟之后容易且有效地编程定时器以产生周期性中断信号到处理单元或单稳中断信号的能力。 该系统还提供了为计数器设置可编程滚动值以定义中断之间的时间的能力。 高分辨率计数器提供每百纳秒产生周期性中断的能力。
    • 7. 发明授权
    • Digital filters
    • 数字滤波器
    • US06581080B1
    • 2003-06-17
    • US09549403
    • 2000-04-14
    • David Richards
    • David Richards
    • G06F1710
    • H03H17/02H03H17/0294
    • A technique for generating coefficients for a digital filter. A gain control signal with a value of reference gain and a frequency control signal with a value of reference frequency are provided. A plurality of gain and/or frequency points are calculated, according to a model of the frequency/gain characteristic of a prototype analog filter, at frequencies equal to and less than a Nyquist frequency (where the Nyquist frequency is half the sampling frequency of the digital frequency) and which match corresponds to gain and/or frequency points in the corresponding digital filter characteristic. Pre-warped parameters of a model of the analogue filter are calculated from the calculating points and a transform is applied to the resulting pre-warped analogue model, thus, converting the pre-warped analog model into the digital domain. Coefficients from the transformed model are generated and applied to the filter, thereby generating the coefficients of the digital filter.
    • 一种用于产生数字滤波器系数的技术。 提供具有参考增益值的增益控制信号和具有参考频率值的频率控制信号。 根据原型模拟滤波器的频率/增益特性的模型,在等于并小于奈奎斯特频率(奈奎斯特频率是等于或等于奈奎斯特频率的采样频率的一半)的频率下计算多个增益和/或频率点 数字频率),哪个匹配对应于相应数字滤波器特性中的增益和/或频率点。 从计算点计算模拟滤波器模型的预弯曲参数,并将变换应用于所产生的预翘曲模拟模型,从而将预翘曲模拟模型转换为数字域。 产生来自变换模型的系数并将其应用于滤波器,由此产生数字滤波器的系数。
    • 8. 发明授权
    • Automated tournament gaming system: apparatus and method
    • 自动比赛游戏系统:装置和方法
    • US6039648A
    • 2000-03-21
    • US811551
    • 1997-03-04
    • Robert GuinnDavid Richards
    • Robert GuinnDavid Richards
    • G07F17/32A63F9/22
    • G07F17/32
    • An apparatus and method for an automated tournament gaming system (10) comprising a central server computer (20) operatively coupled to, inter alia, a plurality of gaming machine G.sub.1, G.sub.2 . . . G.sub.N for automatically harnessing any of the gaming machines for automatically inciting and running a tournament where a group of players are participating for a period after which prizes are awarded to the winning tournament play participants. In addition, the system (10) includes a host site computer (200) operatively coupled to a plurality of the central servers (20) at a variety of remote gaming sites C.sub.1, C.sub.2 . . . C.sub.N for providing a multi-site progressive automated tournament gaming system (210). The multi-site system (210) is integrated into the system (10) to increase the winnings, progressive amounts and the total buy-ins.
    • 一种用于自动比赛游戏系统(10)的装置和方法,包括可操作地耦合到多个游戏机G1,G2的中央服务器计算机(20)。 。 。 GN用于自动利用任何游戏机自动煽动和运行一组玩家参加的比赛,奖品颁发给获胜的比赛参赛者。 另外,系统(10)包括主机站点计算机(200),可操作地耦合到多个远程游戏站点C1,C2处的多个中央服务器(20)。 。 。 CN,用于提供多站点渐进自动游戏系统(210)。 多站点系统(210)被集成到系统(10)中以增加奖金,渐进量和总买入。
    • 10. 发明申请
    • Poker game and apparatus for play thereof
    • 扑克游戏和玩具的玩具
    • US20070241502A1
    • 2007-10-18
    • US11404572
    • 2006-04-14
    • Darrell CampbellDavid RichardsSpencer Peterson
    • Darrell CampbellDavid RichardsSpencer Peterson
    • A63F1/00
    • A63F3/00157A63F2001/005
    • A poker card game and apparatus for its play are disclosed, particularly adapted for casino play, in which each player in a given game, using only a single dealt hand, plays simultaneously separately against the dealer (the house) and against the other players. Betting for the two lines of play may be separate or linked, and a player can elect to play only against the dealer or to play both games together. The game is played as a form of five-card stud with betting before each deal. At the end of each game a player's status as to whether he/she beat the dealer, beat the other players or both is determined and displayed, and winners are paid accordingly. Conventional dealing may be used, but it is preferred that a biased deal, which enhances the opportunities for players to be dealt reasonably good poker hands, be used.
    • 公开了一种扑克牌游戏及其玩具的装置,特别适用于娱乐场游戏,其中仅使用单个手牌的给定游戏中的每个玩家同时独立地与经销商(房屋)和其他玩家共同玩。 两场比赛的投注可能是单独的或相互关联的,玩家可以选择仅对付经销商或同时玩两个游戏。 该游戏是在每次交易之前以一张五张牌的形式进行投注。 在每场比赛结束时,玩家的状态是他/她是否击败经销商,击败其他玩家或二者都被确定和显示,并且获胜者被相应地支付。 可以使用传统交易,但是优选地,使用有利的交易,其增加玩家被合理地处理好的扑克牌的机会。