Compact omnidirectional RF system
    21.
    发明申请
    Compact omnidirectional RF system 审中-公开
    紧凑型全向RF系统

    公开(公告)号:US20060208898A1

    公开(公告)日:2006-09-21

    申请号:US11174412

    申请日:2005-06-30

    IPC分类号: G08B13/14 H01Q21/26

    摘要: A radio frequency (RF) system having omnidirectional functionality, such that the antenna is functional in a generally isotropic manner. The system in one embodiment includes a supporting substrate, a circuit coupled to the substrate, and an antenna coupled to the circuit, the antenna having multiple lobes, wherein responses from the lobes are demodulated and combined at baseband. The circuit can be positioned over a physical area of a portion of the antenna, the antenna acting as a virtual ground plane for the circuit.

    摘要翻译: 具有全向功能的射频(RF)系统,使得天线以大体各向同性的方式起作用。 在一个实施例中的系统包括支撑衬底,耦合到衬底的电路和耦合到电路的天线,天线具有多个波瓣,其中来自波瓣的响应在基带处被解调和组合。 电路可以位于天线的一部分的物理区域上,该天线用作电路的虚拟接地平面。

    Battery activation circuit
    23.
    发明申请
    Battery activation circuit 有权
    电池启动电路

    公开(公告)号:US20050121526A1

    公开(公告)日:2005-06-09

    申请号:US11007973

    申请日:2004-12-08

    IPC分类号: G06K19/07 G06K19/06

    摘要: A system and method for selectively activating a device based on an activate command. A circuit, in low power mode, listens for an activate command. The activate command includes a preamplifer centering sequence, an interrupt signal, and an activate code. The circuit receives a signal that may or may not be an activate command, self-biases the signal based on the preamplifer centering in the preamp/gain control, then determines whether the interrupt signal is of the proper length in the interrupt circuit. If the interrupt is not the proper length, the process stops. If it is the proper length, the command is recognized as an activate command, and a data slicer compares the activate code to a prestored value. If the activate code matches the prestored value, the device is powered up. If they do not match, the device is not initiated.

    摘要翻译: 一种用于基于激活命令选择性地激活设备的系统和方法。 在低功率模式下的电路监听激活命令。 激活命令包括前置放大器对中序列,中断信号和激活码。 该电路接收可能激活命令或不是激活命令的信号,根据前置放大器/增益控制中的前置放大器定心自身偏置信号,然后确定中断信号在中断电路中是否具有合适的长度。 如果中断不正确的长度,程序停止。 如果它是适当的长度,则该命令被识别为激活命令,并且数据限幅器将激活代码与预存值进行比较。 如果激活码与预先存储的值相匹配,则设备通电。 如果它们不匹配,则不启动该设备。

    Method and apparatus for generation of electrical power from solar energy
    24.
    发明申请
    Method and apparatus for generation of electrical power from solar energy 审中-公开
    从太阳能产生电力的方法和装置

    公开(公告)号:US20050081908A1

    公开(公告)日:2005-04-21

    申请号:US10803543

    申请日:2004-03-18

    申请人: Roger Stewart

    发明人: Roger Stewart

    摘要: A method of providing an apparatus and system comprising a complete smart solar electrical power generator system integrated into the form of a thin flat glass plate. The novel elements include: a micro-scale optical array, a new type of miniaturized photovoltaic cell, an inside-the-lens concentrator design, integral heat sinking and mechanical support, a sealed solid-state design with no air gaps and a new process for building it, combined reflective/refractive light concentration around the photovoltaic cell, variable solar concentration ratios, and a new integrated structure for interconnecting the system together.

    摘要翻译: 一种提供一种装置和系统的方法,包括整合成薄平板玻璃板形式的完整的智能太阳能发电系统。 新颖的元素包括:微尺度光学阵列,新型微型光伏电池,内部透镜浓缩器设计,集成散热和机械支撑,无气隙的密封固态设计和新工艺 为了构建它,在光伏电池周围组合反射/折射光浓度,可变的太阳能集中比,以及用于将系统互连在一起的新的集成结构。

    Hierarchical electronic watermarks and method of use
    25.
    发明申请
    Hierarchical electronic watermarks and method of use 有权
    分层电子水印及其使用方法

    公开(公告)号:US20050007236A1

    公开(公告)日:2005-01-13

    申请号:US10731725

    申请日:2003-12-09

    摘要: A method and apparatus for authenticating currency and other important documents. A preferred embodiment may contain both a substrate, such as paper, and an embedded RFID transponder. An embedded RFID transponder or electronic watermark may contain multiple hierarchical layers of electronic passwords that are used to electronically protect the host currency from counterfeiting, or unauthorized modification. In addition, such intelligent RFID tags may uniquely identify a particular document and data related to the document. The authenticating agency can utilize a public or private Electronic Product Code database as a means for the authenticating agency and third parties to authenticate documents and data in documents. The intelligent interactive Electronic Product Code can be used as an anti-counterfeit mechanism enabling third parties requested to provide services, benefits or monetary payments to authenticate documents and prevent counterfeits.

    摘要翻译: 用于认证货币和其他重要文件的方法和装置。 优选实施例可以包含诸如纸的基板和嵌入式RFID应答器。 嵌入式RFID应答器或电子水印可以包含用于电子地保护主机货币免受伪造或未经授权的修改的电子密码的多个层级。 此外,这种智能RFID标签可以唯一地识别与该文档相关的特定文档和数据。 认证机构可以使用公共或私人电子产品代码数据库作为认证机构和第三方对文档中的文档和数据进行身份验证的手段。 智能交互式电子产品代码可用作防伪机制,使第三方能够提供服务,利益或货币支付来验证文档和防止假冒伪劣。

    Pixel circuits and methods for driving pixels
    26.
    发明授权
    Pixel circuits and methods for driving pixels 有权
    像素电路和驱动像素的方法

    公开(公告)号:US08531359B2

    公开(公告)日:2013-09-10

    申请号:US12692453

    申请日:2010-01-22

    申请人: Roger Stewart

    发明人: Roger Stewart

    IPC分类号: G09G3/30

    摘要: A circuit according to one embodiment includes a data line; a select line; a storage node coupled to the select line; a first transistor with a gate coupled to the select line, a first electrode thereof coupled to the storage node, and a second electrode thereof coupled to the data line; a second transistor with a gate coupled to the storage node, a first electrode thereof coupled to the data line; and a light emitting diode coupled to a second electrode of the second transistor. Additional systems and methods are claimed.

    摘要翻译: 根据一个实施例的电路包括数据线; 选择行 耦合到选择线的存储节点; 第一晶体管,其栅极耦合到所述选择线,其第一电极耦合到所述存储节点,其第二电极耦合到所述数据线; 第二晶体管,其栅极耦合到存储节点,其第一电极耦合到数据线; 以及耦合到第二晶体管的第二电极的发光二极管。 要求附加的系统和方法。

    PIXEL CIRCUITS AND METHODS FOR DRIVING PIXELS
    27.
    发明申请
    PIXEL CIRCUITS AND METHODS FOR DRIVING PIXELS 有权
    像素电路和驱动像素的方法

    公开(公告)号:US20100118018A1

    公开(公告)日:2010-05-13

    申请号:US12692453

    申请日:2010-01-22

    申请人: Roger Stewart

    发明人: Roger Stewart

    IPC分类号: G09G5/00 H03K5/00

    摘要: A circuit according to one embodiment includes a data line; a select line; a storage node coupled to the select line; a first transistor with a gate coupled to the select line, a first electrode thereof coupled to the storage node, and a second electrode thereof coupled to the data line; a second transistor with a gate coupled to the storage node, a first electrode thereof coupled to the data line; and a light emitting diode coupled to a second electrode of the second transistor. Additional systems and methods are claimed.

    摘要翻译: 根据一个实施例的电路包括数据线; 选择行 耦合到选择线的存储节点; 第一晶体管,其栅极耦合到所述选择线,其第一电极耦合到所述存储节点,其第二电极耦合到所述数据线; 第二晶体管,其栅极耦合到存储节点,其第一电极耦合到数据线; 以及耦合到第二晶体管的第二电极的发光二极管。 要求附加的系统和方法。

    Pixel circuits and methods for driving pixels
    28.
    发明授权
    Pixel circuits and methods for driving pixels 失效
    像素电路和驱动像素的方法

    公开(公告)号:US07679586B2

    公开(公告)日:2010-03-16

    申请号:US11759796

    申请日:2007-06-07

    申请人: Roger Stewart

    发明人: Roger Stewart

    IPC分类号: G09G3/30 G09G3/10

    摘要: A circuit according to one embodiment includes a data line; a select line; a storage node coupled to the select line; a first transistor with a gate coupled to the select line, a first electrode thereof coupled to the storage node, and a second electrode thereof coupled to the data line; a second transistor with a gate coupled to the storage node, a first electrode thereof coupled to the data line; and a light emitting diode coupled to a second electrode of the second transistor. Additional systems and methods are claimed.

    摘要翻译: 根据一个实施例的电路包括数据线; 选择行 耦合到选择线的存储节点; 第一晶体管,其栅极耦合到所述选择线,其第一电极耦合到所述存储节点,其第二电极耦合到所述数据线; 第二晶体管,其栅极耦合到存储节点,其第一电极耦合到数据线; 以及耦合到第二晶体管的第二电极的发光二极管。 要求附加的系统和方法。

    PIXEL CIRCUITS AND METHODS FOR DRIVING PIXELS
    29.
    发明申请
    PIXEL CIRCUITS AND METHODS FOR DRIVING PIXELS 有权
    像素电路和驱动像素的方法

    公开(公告)号:US20080062091A1

    公开(公告)日:2008-03-13

    申请号:US11759817

    申请日:2007-06-07

    申请人: Roger Stewart

    发明人: Roger Stewart

    IPC分类号: G09G3/30

    摘要: A display driver according to one embodiment includes a digital to analog converter producing a current at a selected level an output of the digital to analog converter being coupleable to a data line of a display; and a voltage source being coupleable to the data line for precharging the data line. A method for precharging a data line of a display according to another embodiment includes determining a voltage level on a data line during a frame period; storing the voltage level; and prior to or during a subsequent frame period, precharging the data line voltage to a derivative of the stored voltage level. Additional systems and methods are claimed.

    摘要翻译: 根据一个实施例的显示驱动器包括产生选定电平的电流的数模转换器,数模转换器的输出可耦合到显示器的数据线; 以及电压源可耦合到数据线以预充电数据线。 根据另一实施例的用于对显示器的数据线进行预充电的方法包括在帧周期期间确定数据线上的电压电平; 存储电压电平; 并且在随后的帧周期之前或之后,将数据线电压预充电到所存储的电压电平的导数。 要求附加的系统和方法。

    RFID reader with adaptive carrier cancellation
    30.
    发明申请
    RFID reader with adaptive carrier cancellation 审中-公开
    RFID读写器具有自适应载波消除

    公开(公告)号:US20070206704A1

    公开(公告)日:2007-09-06

    申请号:US11367060

    申请日:2006-03-03

    摘要: An RFID reader includes first and second mixers receiving an incoming signal, circuitry for adding a portion of an outgoing signal to an incoming signal, first and second analog feedback loops coupling outputs of the first and second mixers to the circuitry for adding the outgoing signal to the incoming signal. An amount of outgoing signal added to the incoming signal depends on signals in the feedback loops. An RFID reader in another embodiment of the present invention includes a first mixer receiving an incoming signal, a second mixer receiving the incoming signal, an AC-coupled section coupled to the mixer outputs, and a DC-coupled section coupled to the mixer outputs. An RFID reader in another embodiment of the present invention includes an analog loop for adaptive carrier signal cancellation from an incoming signal, and a digital loop for controlling a gain of the incoming signal. Methods are also presented.

    摘要翻译: RFID读取器包括接收输入信号的第一和第二混频器,用于将输入信号的一部分添加到输入信号的电路;第一和第二模拟反馈回路,将第一和第二混频器的输出耦合到电路,用于将输出信号加到 传入信号。 输入信号的输出信号量取决于反馈回路中的信号。 本发明另一实施例中的RFID读取器包括接收输入信号的第一混频器,接收输入信号的第二混频器,耦合到混频器输出端的AC耦合部分,以及耦合到混频器输出端的DC耦合部分。 本发明的另一实施例中的RFID读取器包括用于从输入信号中自适应载波信号消除的模拟环路和用于控制输入信号的增益的数字环路。 还提出了方法。