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    Progressive watermark decoding on a distributed computing platform
    1.
    发明申请
    Progressive watermark decoding on a distributed computing platform 有权
    分布式计算平台上的逐行水印解码

    公开(公告)号：US20050036653A1

    公开(公告)日：2005-02-17

    申请号：US10828930

    申请日：2004-04-20

    申请人： Trent Brundage ,  Brett Hannigan ,  Ravi Sharma

    发明人： Trent Brundage ,  Brett Hannigan ,  Ravi Sharma

    IPC分类号： G06T1/00 ,  G06K9/00

    CPC分类号： G06T1/005 ,  G06T2201/0065

    摘要： The disclosure describes a method of progressively decoding a digital watermark on a distributed computing platform. A client device equipped with a digital camera, such as a PDA or cell phone, captures a digital image of a watermarked object, and pre-filters the image to isolate a portion of the image data suspected of containing a digital watermark. The pre-filter de-correlates a portion of the image data suspected of containing a digital watermark from the remaining host image signal using a predictive filter. The client then quantizes the filtered data and progressively transmits the quantized data to a watermark decoder. The progressive transmitter sends image data as necessary to achieve a valid decoding operation. To reduce bandwidth requirements, the transmitter starts with the most highly quantized version of the filtered image, and sends lesser quantized versions until the watermark decoder completes a successful decoding operation.

    摘要翻译： 本公开描述了在分布式计算平台上逐渐解码数字水印的方法。 配备有诸如PDA或手机的数字照相机的客户端设备捕获水印物体的数字图像，并对图像进行预过滤以隔离怀疑包含数字水印的图像数据的一部分。 预滤波器使用预测滤波器将怀疑含有数字水印的图像数据的一部分与剩余的主机图像信号相关联。 然后，客户端对经滤波的数据进行量化，并将量化的数据逐渐发送到水印解码器。 逐行发送器根据需要发送图像数据以实现有效的解码操作。 为了减少带宽要求，发射机以最高量化版本的滤波图像开始，并发送较小的量化版本，直到水印解码器完成成功的解码操作。

    Distributed Content Identification
    2.
    发明申请
    Distributed Content Identification 有权
    分布式内容识别

    公开(公告)号：US20070286454A1

    公开(公告)日：2007-12-13

    申请号：US11758573

    申请日：2007-06-05

    申请人： Trent Brundage ,  Brett Hannigan ,  Ravi Sharma

    发明人： Trent Brundage ,  Brett Hannigan ,  Ravi Sharma

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T2201/0065

    摘要： A method of identifying content in a distributed computing system. The method receives an image or audio signal in a first device in the distributed computing system, such as a cell phone or other wireless device. In this device, the method performs an analysis of characteristics of the signal to identify portions of the signal from which to derive a content identifier. The method then sends the portions to a second, remote device in the distributed computing system, such as a server. The server further processes the portions to derive a content identifier, which in turn, is used to look up data corresponding to the content, such as a Uniform Resource Locator. In the case of a wireless telephone network, for example, the method distributes the task of identifying content signals captured through the microphone or camera on the phones in the network.

    摘要翻译： 一种在分布式计算系统中识别内容的方法。 该方法在诸如蜂窝电话或其他无线设备的分布式计算系统中的第一设备中接收图像或音频信号。 在该装置中，该方法对信号的特性进行分析，以识别从其导出内容标识符的信号的部分。 该方法然后将部分发送到分布式计算系统（例如服务器）中的第二远程设备。 服务器进一步处理部分以导出内容标识符，该内容标识符又用于查找与内容相对应的数据，例如统一资源定位符。 在无线电话网络的情况下，例如，该方法将通过麦克风或相机捕获的内容信号的任务分配给网络中的电话。

    Inverted keyboard instrument and method of playing the same
    3.
    发明授权
    Inverted keyboard instrument and method of playing the same 有权

    公开(公告)号：US09024165B2

    公开(公告)日：2015-05-05

    申请号：US13066588

    申请日：2011-04-18

    申请人： Ravi Sharma

    发明人： Ravi Sharma

    IPC分类号： G10C3/12 ,  G10H1/34

    CPC分类号： G10H1/34 ,  G10H2220/221

    摘要： An electronic keyboard instrument is provided and methods of playing and assembling the same. The instrument comprises a controller for enabling activation of electronic signals having audible, visible, amplifiable, recordable and/or like characteristics, and a power source for operating the controller. A first keyboard is provided having a first selected length and being oriented in a first direction such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a first hand of one or more users. A second keyboard with a second selected length is generally coextensive with and oriented generally opposite to the first such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a second hand of the one or more users. In addition, an interface connects the controller to at least one external device having sound module, and/or sequencing and signal enhancement functions. A plurality of peripheral devices operatively connected thereto permit interactive control and manipulation of the signals. Finally, a wearable support is mounted to the instrument for suspending the first and second keyboards from the user's body during instrument operation. Alternatively, the instrument is suspended by a support structure in a generally horizontal fashion for simultaneous operation by multiple users.

    Continuous inkjet printhead with selectable printing volumes of ink
    8.
    发明授权
    Continuous inkjet printhead with selectable printing volumes of ink 失效
    连续喷墨打印头，可选择打印量的墨水

    公开(公告)号：US06575566B1

    公开(公告)日：2003-06-10

    申请号：US10246491

    申请日：2002-09-18

    申请人： David L. Jeanmaire ,  Gilbert A. Hawkins ,  Ravi Sharma

    发明人： David L. Jeanmaire ,  Gilbert A. Hawkins ,  Ravi Sharma

    IPC分类号： B41J202

    CPC分类号： B41J2/09 ,  B41J2/03 ,  B41J2/105 ,  B41J2002/022 ,  B41J2002/031 ,  B41J2002/033

    摘要： An inkjet printhead, that includes a plurality of nozzle bores from which streams of ink droplets having selectable first and second volumes are emitted; a droplet deflector for deflecting the ink droplets having first and second volumes into first and second paths respectively, the droplet deflector producing a corresponding plurality of physically separate streams of gas, each stream of gas directed on a corresponding one of the streams of ink droplets; and an ink gutter positioned to catch the ink droplets moving along one of the first or second paths. In addition to a method for selectively controlling the ink droplets with the aforementioned inkjet printhead.

    摘要翻译： 一种喷墨打印头，包括多个喷嘴孔，从其喷出具有可选择的第一和第二体积的墨滴流; 液滴偏转器，用于将具有第一和第二体积的墨滴分别偏转到第一和第二通道中，液滴偏转器产生相应的多个物理上分离的气体流，每个气体流指向相应的一个墨滴流; 以及墨水槽，其被定位成捕捉沿着第一或第二路径中的一个移动的墨滴。 除了用上述喷墨打印头选择性地控制墨滴的方法之外，

    Assisted drop-on-demand inkjet printer
    9.
    发明授权
    Assisted drop-on-demand inkjet printer 失效
    辅助按需喷墨打印机

    公开(公告)号：US06527357B2

    公开(公告)日：2003-03-04

    申请号：US09911260

    申请日：2001-07-23

    申请人： Ravi Sharma ,  John A. Lebens

    发明人： Ravi Sharma ,  John A. Lebens

    IPC分类号： B41J2938

    CPC分类号： B41J2/14 ,  B41J2/005

    摘要： A droplet generator is provided that is particularly adapted for generating micro droplets of ink on demand in an inkjet printhead having a plurality of nozzles. The droplet generator includes a droplet separator formed from the combination of a droplet assistor and a droplet initiator. The droplet assistor is coupled to ink in each of the nozzles and functions to lower the amount of energy necessary for an ink droplet to form and separate from an ink meniscus extending across the nozzle outlet. The droplet assistor may be, for example, a heater or surfactant supply mechanism for lowering the surface tension of the ink meniscus. Alternatively, the droplet assistor may be a mechanical oscillator such as a piezoelectric transducer that generates oscillations in the ink sufficient to periodically form convex ink meniscus across the nozzle outlets, but insufficient to cause ink droplets to separate from the outlets. The droplet initiator cooperates with the droplet assistor and selectively causes an ink droplet to form and separate from the ink meniscus. The droplet initiator may be, for example, a thermally-actuated paddle. The droplet separator increases the speed and accuracy of ink micro droplets expelled from the printhead nozzles.

    摘要翻译： 提供了一种液滴发生器，其特别适于在具有多个喷嘴的喷墨打印头中根据需要生成墨滴微滴。 液滴发生器包括由液滴组合物和液滴引发剂的组合形成的液滴分离器。 液滴组合器耦合到每个喷嘴中的油墨，并且用于降低墨滴形成并与从喷嘴出口延伸的油墨弯液面分离所需的能量的量。 液滴组合器可以是例如用于降低油墨弯液面的表面张力的加热器或表面活性剂供给机构。 或者，液滴组合器可以是诸如压电换能器的机械振荡器，其产生足以周期性地形成穿过喷嘴出口的凸形墨水弯月面的墨水中的振荡，但不足以使墨滴与出口分离。 液滴引发剂与液滴组合物配合，并选择性地使油墨液滴形成并与油墨弯液面分离。 液滴引发剂可以是例如热致动桨。 液滴分离器增加从打印头喷嘴排出的墨微滴的速度和精度。

    Ink jet print head with capillary flow cleaning
    10.
    发明授权
    Ink jet print head with capillary flow cleaning 失效

    公开(公告)号：US06513903B2

    公开(公告)日：2003-02-04

    申请号：US09750993

    申请日：2000-12-29

    申请人： Ravi Sharma ,  Gilbert A. Hawkins

    发明人： Ravi Sharma ,  Gilbert A. Hawkins

    IPC分类号： B41J2165

    CPC分类号： B41J2/16552

    摘要： The present invention resides in a self-cleaning printer with a print head having an orifice plate defining an ink jet orifice, a cleaning orifice and a drain orifice. The orifice plate further defines an outer surface between the orifices. A source of pressurized cleaning fluid is connected to the cleaning orifice and a fluid return is connected to the drain orifice for storing used cleaning fluid. A cleaning surface is disposed adjacent to and separate from the outer surface to define a capillary fluid flow path from the cleaning orifice across the ink jet orifice and to the drain orifice. During cleaning, the source of pressurized cleaning fluid discharges a flow of a cleaning fluid into the capillary fluid flow path and pressurized cleaning fluid from the capillary flow path passes through the drain orifice and into the fluid return.