Watermarking of digital images using wavelet and discrete cosine transforms
    1.
    发明授权
    Watermarking of digital images using wavelet and discrete cosine transforms 有权
    使用小波和离散余弦变换对数字图像进行水印

    公开(公告)号:US06975733B1

    公开(公告)日:2005-12-13

    申请号:US09786823

    申请日:1999-09-10

    IPC分类号: G06K9/00

    摘要: The present invention relates to a method for embedding a watermark into a black and white or color digital image [D(x)]. Basically the inventive method comprises the steps of transforming the digital image using a wavelet transform [WC(y)], transforming a watermark using discrete cosine transform (DCT), integrating the wavelet-transformed digital image with the DCT-transformed watermark [DW(x)+WC(y)] to insert the watermark into the image, and generating the watermarked image using inverse wavelet transform [D(x)′]. For color images, RGB mode is converted into YIQ mode using a conversion matrix and the wavelet transform is applied to the Y-, I-, Q-values. This inventive digital watermarking of a color image is found to be highly robust against lossy compression and other image processing operations, compared to conventionally known methods which are known to be unsuitable for watermarking color images.

    摘要翻译: 本发明涉及一种将水印嵌入到黑白或彩色数字图像[D(x)]中的方法。 基本上,本发明的方法包括以下步骤:使用小波变换[WC(y)]变换数字图像,使用离散余弦变换(DCT)变换水印,将小波变换数字图像与DCT变换水印[DW x)+ WC(y)]将水印插入到图像中,并使用逆小波变换[D(x)']生成带水印的图像。 对于彩色图像,使用转换矩阵将RGB模式转换为YIQ模式,并将小波变换应用于Y,I,Q值。 发现彩色图像的本发明的数字水印技术对于有损压缩和其他图像处理操作来说是高度鲁棒的,与已知的不适合于对彩色图像进行水印化的已知方法相比。

    Apparatus and method for issuing and authenticating securities, etc. using digital watermarking
    2.
    发明授权
    Apparatus and method for issuing and authenticating securities, etc. using digital watermarking 有权
    使用数字水印发行和认证证券等的设备和方法

    公开(公告)号:US07457957B2

    公开(公告)日:2008-11-25

    申请号:US10221401

    申请日:2002-01-12

    IPC分类号: H04L9/00 H04N7/167

    摘要: Simultaneously with a robust watermark and fragile watermark or semi-watermark is embedded into conventional securities, etc., such as gift coupon, various kinds of ticket, coupon, electronic stamp, bond & debenture, note, stock certificate, lottery, paper money, check, etc. and various kinds of public documents including certificates, etc. requiring confirmation and authentication (hereinafter, referred to as “securities, etc.”) in the form of digital file. Such watermark-embedded securities, etc. are conveniently issued on-line and are printed out in the form of paper through a printer. The printed securities, etc. are used off-line and are authenticated by determining the forgery or alternation by means of photocopy, etc. through the detection of the embedded watermark.

    摘要翻译: 与健康水印和脆弱水印或半水印同时嵌入传统证券等,如礼券,各种票,优惠券,电子邮票,债券和债券,票据,证券,彩票,纸币, 检查等,以及需要确认和认证的证书等的各种公开文件(以下称为“证券等”)以数字文件的形式。 这种水印嵌入式证券等方便地在线发行,并通过打印机以纸张的形式打印出来。 打印的证券等离线使用,并通过检测嵌入水印通过复印等确定伪造或交替进行认证。

    Substrate-chucking electrostatic chuck, and substrate bonding apparatus and method for liquid crystal display panel using the same
    3.
    发明授权
    Substrate-chucking electrostatic chuck, and substrate bonding apparatus and method for liquid crystal display panel using the same 有权
    基板夹持静电卡盘,以及使用其的液晶显示面板的基板接合装置及方法

    公开(公告)号:US08264812B2

    公开(公告)日:2012-09-11

    申请号:US11474970

    申请日:2006-06-27

    申请人: Jong Won Kim

    发明人: Jong Won Kim

    IPC分类号: H01L21/683

    CPC分类号: H01L21/6833 H02N13/00

    摘要: A substrate-chucking electrostatic chuck (ESC) is disclosed which is sub-divided into at least three groups of electrostatic blocks, to uniformly chuck the substrate. A substrate bonding apparatus and method for a liquid crystal display (LCD) panel using the electrostatic chuck is also disclosed. The ESC includes at least three groups of electrostatic blocks which chuck the substrate using electrostatic chucking forces respectively generated by different voltages applied to the electrostatic blocks in association with the electrostatic block groups, and release the chucked substrate when the voltages are cut off.

    摘要翻译: 公开了一种基板夹持静电卡盘(ESC),其被细分为至少三组静电块,以均匀地卡住基板。 还公开了一种使用该静电卡盘的液晶显示器(LCD)面板的基板接合装置和方法。 ESC包括至少三组静电块,其使用分别由与静电块组相关联的静电块施加的不同电压分别产生的静电夹持力夹持衬底,并且当切断电压时释放夹持的衬底。

    Wireless LAN and USB bridging apparatus for connecting communication between wireless local area network and wireless USB network
    4.
    发明授权
    Wireless LAN and USB bridging apparatus for connecting communication between wireless local area network and wireless USB network 失效
    无线LAN和USB桥接设备,用于连接无线局域网和无线USB网络之间的通信

    公开(公告)号:US07859989B2

    公开(公告)日:2010-12-28

    申请号:US11867385

    申请日:2007-10-04

    IPC分类号: H04J11/00

    摘要: A LAN/USB bridge apparatus is provided. The LAN/USB bridge apparatus includes a wireless LAN/USB signal processor and a controller. The wireless LAN/USB signal processor receives a wireless LAN signal transmitted from a wireless LAN access point performing a bridging function between a wired LAN and a wireless LAN, transforms the received wireless LAN signal a UWB (ultra wide band) signal, and transmits the UWB signal to at least one of wireless USB apparatuses. The wireless LAN/USB signal processor also receives a UWB signal transmitted from the wireless USB apparatuses, inverse-transforms the received UWB signal to the wireless LAN signal, and transmits the wireless LAN signal to the wireless LAN access point. The controller controls and manages operations of the LAN/USB signal processor.

    摘要翻译: 提供了一个LAN / USB桥接设备。 LAN / USB桥接设备包括无线LAN / USB信号处理器和控制器。 无线LAN / USB信号处理器接收从有线LAN和无线LAN之间执行桥接功能的无线LAN接入点发送的无线LAN信号,将接收到的无线LAN信号转换成UWB(超宽带)信号,并发送 UWB信号到无线USB设备中的至少一个。 无线LAN / USB信号处理器还接收从无线USB装置发送的UWB信号,将接收到的UWB信号逆变换为无线LAN信号,并将无线LAN信号发送到无线LAN接入点。 控制器控制和管理LAN / USB信号处理器的操作。

    Communication method in an IEEE 802.11 wireless LAN environment
    7.
    发明授权
    Communication method in an IEEE 802.11 wireless LAN environment 有权
    IEEE 802.11无线局域网环境中的通信方法

    公开(公告)号:US08767692B2

    公开(公告)日:2014-07-01

    申请号:US13264327

    申请日:2010-02-25

    摘要: A communication method in an IEEE 802.11 wireless LAN environment comprises: in the event that traffic from a station targeting another station as a destination is generated in the station, negotiating with another station for directly establishing a link to a secondary wireless channel other than the basic service set (BSS) channel used for communication with an access point (AP); if the negotiation has succeeded, and the link to the secondary channel is to be directly established, switching the operating channel of the station from the BSS channel to the secondary channel; and transmitting data of the generated traffic to said other station through the secondary channel. The method enables communication between the station and the AP, and the direct establishment of links between stations using multiple channels in an IEEE 802.11 wireless LAN environment.

    摘要翻译: IEEE 802.11无线LAN环境中的通信方法包括:在站内产生来自作为目的地的另一站的站的业务的情况下,与另一站协商直接建立到除了基本的以外的辅助无线信道的链路 用于与接入点(AP)通信的服务集(BSS)信道; 如果协商成功,并且要直接建立与二级信道的链路,则将该站的工作信道从BSS信道切换到次信道; 以及通过次要信道将生成的业务的数据发送到所述其他站。 该方法实现站与AP之间的通信,以及在IEEE 802.11无线LAN环境中直接建立使用多个信道的站间链路。

    Convertible computer with selective activation of input devices and power consumption level based on a tablet or notebook mode
    8.
    发明授权
    Convertible computer with selective activation of input devices and power consumption level based on a tablet or notebook mode 有权
    可转换计算机,具有选择性激活输入设备和基于平板电脑或笔记本电脑模式的功耗水平

    公开(公告)号:US08151105B2

    公开(公告)日:2012-04-03

    申请号:US12276813

    申请日:2008-11-24

    摘要: A convertible computer is equipped with a notebook computer function and a tablet computer function. When a system power supply is turned on, a functionality or physical configuration such as rotation state of a display module can be detected, and an environment can be controlled such as an operating system (OS) for a tablet computer or notebook computer is selectively booted. Input signals of input units can also be controlled in an activation or inactivation state according to a system mode. An operation of switch sensing an open/closed state of a liquid crystal display (LCD) can be controlled by a signal generated by the rotation operation of the display module. In a state in which at least one control value necessary for setting a system environment is stored in a memory, the system mode switching operation is monitored and the system environment is set according to the switched system mode.

    摘要翻译: 可转换计算机配备笔记本电脑功能和平板电脑功能。 当系统电源打开时,可以检测诸如显示模块的旋转状态的功能或物理配置,并且可以控制诸如用于平板电脑或笔记本计算机的操作系统(OS)的环境被选择性地引导 。 输入单元的输入信号也可以根据系统模式被控制在激活或失活状态。 感测液晶显示器(LCD)的打开/关闭状态的开关的操作可以通过由显示模块的旋转操作产生的信号来控制。 在将系统环境设定所需的至少一个控制值存储在存储器中的状态下,监视系统模式切换动作,根据切换后的系统模式来设定系统环境。

    Wireless communication system and method
    10.
    发明申请
    Wireless communication system and method 审中-公开
    无线通信系统及方法

    公开(公告)号:US20090147832A1

    公开(公告)日:2009-06-11

    申请号:US12155837

    申请日:2008-06-10

    IPC分类号: H04B1/707

    摘要: A wireless communication system includes a heterogeneous wireless station for transmitting and receiving a heterogeneous wireless station signal; and a detection and avoidance device for detecting the heterogeneous wireless station signal, and for transmitting and receiving an ultra-wideband signal, the ultra-wideband signal with a reduced output or the ultra-wideband signal shifted to another ultra-wideband or ultra-wideband group in order to prevent interference with the heterogeneous wireless station based on a predetermined level. Further, a communication method includes receiving a heterogeneous wireless station signal; converting the heterogeneous wireless station signal into tone-nulling elements based on a predetermined level; receiving the tone-nulling elements, and generating an ultra-wideband signal or reducing an output of the ultra-wideband signal; and changing a time frequency number of the ultra-wideband signal based on the values of the tone-nulling elements to selectively shift to another band of the band group or another band group.

    摘要翻译: 无线通信系统包括用于发送和接收异构无线站信号的异构无线站; 以及检测和回避装置,用于检测异构无线站信号,并且用于发送和接收超宽带信号,具有减小的输出的超宽带信号或移动到另一超宽带或超宽带的超宽带信号 以防止基于预定水平的异构无线站的干扰。 此外,通信方法包括:接收异构无线站信号; 基于预定水平将异构无线站信号转换为音调零点元素; 接收音调零点元素,生成超宽带信号或减少超宽带信号的输出; 以及基于所述音调零点元素的值来改变所述超宽带信号的时间频率数,以选择性地移动到所述频带组或另一频带组的另一频带。