公开(公告)号：US08428261B2

公开(公告)日：2013-04-23

申请号：US10600029

申请日：2003-06-20

Applicant: Gary Schneider ,  Stephen J. Shellhammer

Inventor： Gary Schneider ,  Stephen J. Shellhammer

IPC: H04L9/00 ,  H04L29/06 ,  H04L9/32 ,  H04K1/00 ,  G06F21/00

CPC classification number: H04W12/06 ,  H04W76/10 ,  H04W84/18

Abstract: Described is a method and system for establishing an authenticated wireless communication (e.g., using Bluetooth technology) between first and second mobile devices. The first device (e.g., a mobile barcode scanner) sends a signal to establish a wireless communication with the second device. The first device includes a data capturing arrangement (“DCA”) as an only input device interface with a user thereof. The second device initiates an authentication process by requesting the first device to obtain a PIN code from the user. Once the first device obtains the PIN code from the user via the DCA, a pairing process is performed to compare the PIN code to entries in a database of authorized PIN codes. When the pairing process has been successfully completed, a link key is generated to establish the authenticated wireless communication between the first and second devices.

Abstract translation: 描述了用于在第一和第二移动设备之间建立经认证的无线通信（例如，使用蓝牙技术）的方法和系统。 第一设备（例如，移动条形码扫描器）发送信号以建立与第二设备的无线通信。 第一设备包括作为与用户的唯一输入设备接口的数据捕获布置（“DCA”）。 第二设备通过请求第一设备从用户获取PIN码来发起认证过程。 一旦第一设备经由DCA从用户获得PIN码，则执行配对处理以将PIN码与授权PIN码的数据库中的条目进行比较。 当配对过程成功完成时，生成链路密钥以在第一和第二设备之间建立认证的无线通信。

公开(公告)号：US20130016760A1

公开(公告)日：2013-01-17

申请号：US13349498

申请日：2012-01-12

Applicant: Stephen J. Shellhammer ,  Cong Shen ,  Rahul Tandra ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

Inventor： Stephen J. Shellhammer ,  Cong Shen ,  Rahul Tandra ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

IPC: H04W24/00 ,  H04B1/707

CPC classification number: H04W16/14 ,  H04W84/12

Abstract: Certain aspects of the present disclosure relate to techniques for supporting television white space (TVWS) communication. In an aspect of the present disclosure, a low-rate TVWS enabler (Mode II wireless communication device) may provide initial enablement for all Mode I devices (e.g., access points and user terminals), as well as it may transmit a contact verification signal (CVS) on a regular basis to keep the Mode I devices enabled for the TVWS communication.

Abstract translation: 本公开的某些方面涉及用于支持电视空白（TVWS）通信的技术。 在本公开的一方面，低速率TVWS使能器（模式II无线通信设备）可以为所有模式I设备（例如，接入点和用户终端）提供初始启用，并且其可以发送接触验证信号 （CVS），以保持模式I设备启用TVWS通信。

公开(公告)号：US20130012138A1

公开(公告)日：2013-01-10

申请号：US13177334

申请日：2011-07-06

Applicant: Wenyi Zhang ,  Cong Shen ,  Ahmed K. Sadek ,  Yong Jin Kim ,  Stephen J. Shellhammer

Inventor： Wenyi Zhang ,  Cong Shen ,  Ahmed K. Sadek ,  Yong Jin Kim ,  Stephen J. Shellhammer

IPC: H04B17/00

CPC classification number: H04W16/14 ,  H04B17/26 ,  H04B17/309

Abstract: A method of wireless communication in white space includes spectrum sensing in the white space during each of multiple sensing intervals. The method also includes determining whether each of the sensing intervals is subject to interference. The determining process may be based on a time domain analysis or a frequency domain analysis of signal power during each sensing interval.

Abstract translation: 白色空间中的无线通信方法包括在多个感测间隔中的每一个期间的白色空间中的频谱感测。 该方法还包括确定每个感测间隔是否受到干扰。 确定过程可以基于每个感测间隔期间的信号功率的时域分析或频域分析。

公开(公告)号：US07831414B2

公开(公告)日：2010-11-09

申请号：US11866391

申请日：2007-10-02

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: H04B15/00 ,  G06F19/00

CPC classification number: H04B1/40 ,  H04B15/00 ,  H04B2215/062 ,  H04W16/14

Abstract: An apparatus, a cognitive radio, a processor, a method, and a machine-readable medium for detecting a presence of a signal in a communication channel are disclosed. An apparatus includes a processor configured to select one or more peak samples of two or more fields of a sampled signal and configured to determine one or more absolute values of the one or more peak samples of the two or more fields. In addition, the processor is configured to superimpose the one or more absolute values of the one or more peak samples of the two or more fields. The processor is further configured to combine the one or more absolute values that fall within a predetermined window to produce a peak value and configured to compare the peak value with a threshold to determine a presence of a signal in the communication channel.

Abstract translation: 公开了一种用于检测通信信道中的信号的存在的装置，认知无线电，处理器，方法和机器可读介质。 一种装置包括：处理器，被配置为选择采样信号的两个或多个场的一个或多个峰值采样，并且被配置为确定两个或更多个场的一个或多个峰值采样的一个或多个绝对值。 此外，处理器被配置为叠加两个或更多个字段的一个或多个峰值样本的一个或多个绝对值。 处理器还被配置为组合落在预定窗口内的一个或多个绝对值以产生峰值并且被配置为将峰值与阈值进行比较以确定通信信道中的信号的存在。

公开(公告)号：US20100035557A1

公开(公告)日：2010-02-11

申请号：US12186500

申请日：2008-08-05

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: H04B17/00

CPC classification number: H04W16/14 ,  H04B17/391 ,  H04K3/822 ,  H04K2203/12

Abstract: Methods and apparatus for sensing the presence of a transmission signal type within a wireless channel in a wireless communication system, such as those including the use of wireless microphones, are described. Sensing the transmission signal type includes calculating a spectral density estimate of a signal on the wireless channel. A first test value, derived from the calculated spectral density estimate, is compared to a first threshold. A preliminary determination of the presence of the transmission signal type is made if the first test value exceeds the first threshold. Sensing the presence of the signal type after preliminary determination of the presence of the signal type is made by determining that an observed spectral density of a prescribed signal added to the signal on the wireless channel matches a model estimate of the spectral density of the prescribed signal to a sufficient degree.

Abstract translation: 描述了在无线通信系统（例如包括使用无线麦克风的那些）中的用于感测无线信道内的传输信号类型的存在的方法和装置。 感测传输信号类型包括计算无线信道上的信号的频谱密度估计。 将从计算的频谱密度估计导出的第一测试值与第一阈值进行比较。 如果第一测试值超过第一阈值，则进行传输信号类型的存在的初步确定。 通过确定添加到无线信道上的信号的规定信号的观测频谱密度与规定信号的频谱密度的模型估计相匹配来进行信号类型的存在的初步确定之后，感测出信号类型的存在 足够的程度。

公开(公告)号：US06783071B2

公开(公告)日：2004-08-31

申请号：US09883516

申请日：2001-06-18

Applicant: Adam Levine ,  Stephen J. Shellhammer

Inventor： Adam Levine ,  Stephen J. Shellhammer

IPC: G06K1500

CPC classification number: G07G1/14 ,  G06K17/0022 ,  H04W84/18

Abstract: Wireless data communications using a master/slave protocol are easily established between a master radio module which is part of a POS terminal and a slave radio module which is part of a portable bar code scanning device. A bar code identifying the portable bar code scanning device is provided on the outside of the housing of the portable device. By scanning this bar code with a scanner associated with the POS terminal, such as a fixed scanner built onto a counter, the master/slave radio communications link can be automatically implemented.

Abstract translation: 使用主/从协议的无线数据通信在作为POS终端的一部分的主无线电模块和作为便携式条形码扫描装置的一部分的从无线电模块之间容易地建立。 识别便携式条形码扫描装置的条形码设置在便携式装置的壳体的外部。 通过使用与POS终端相关联的扫描仪（例如内置在计数器上的固定扫描仪）扫描该条形码，可以自动实现主/从无线电通信链路。

公开(公告)号：US5635697A

公开(公告)日：1997-06-03

申请号：US253694

申请日：1994-06-03

Applicant: Stephen J. Shellhammer ,  Arman Nikzad ,  Jerome Swartz

Inventor： Stephen J. Shellhammer ,  Arman Nikzad ,  Jerome Swartz

IPC: G06F3/00 ,  G06F9/44 ,  G06K1/12 ,  G06K7/016 ,  G06K7/10 ,  G06K7/14 ,  G06K17/00 ,  G06K19/06 ,  H04N1/00

CPC classification number: G06K7/1093 ,  G06F3/002 ,  G06K1/126 ,  G06K19/06037 ,  G06K7/0166 ,  G06K7/10722 ,  G06K7/14 ,  G06K7/1417 ,  G06K7/1443 ,  G06K7/1456 ,  G06K2019/06253

Abstract: A method and apparatus for decoding a two-dimensional bar code symbol using a charge-coupled device (CCD) camera, charge-modulation device (CMD) camera, or other bar code reading device such as a hand-held reader, light pen or wand, scan mouse, or stationary laser scanner. The CCD/CMD camera or reading device optically images the bar code symbol to obtain digital image data, which is stored in a memory. The location and orientation of the two-dimensional bar code

Abstract translation: 一种使用电荷耦合器件（CCD）照相机，电荷调制装置（CMD）照相机或诸如手持读取器，光笔或其他条形码读取装置的二维条形码符号进行解码的方法和装置 魔杖，扫描鼠标或固定式激光扫描仪。 CCD / CMD相机或读取装置对条形码符号进行光学图像以获得存储在存储器中的数字图像数据。 二维条码的位置和方向

公开(公告)号：US5319181A

公开(公告)日：1994-06-07

申请号：US851493

申请日：1992-03-16

Applicant: Stephen J. Shellhammer ,  Ming-Hua Chen ,  Arman Nikzad

Inventor： Stephen J. Shellhammer ,  Ming-Hua Chen ,  Arman Nikzad

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  G06K9/00

CPC classification number: G06K7/1093 ,  G06K19/06037 ,  G06K7/0166 ,  G06K7/1417 ,  G06K7/1443 ,  G06K7/1456

Abstract: A method and apparatus for decoding a two-dimensional bar code symbol using a charge-coupled device (CCD) camera or a charge-modulation device (CMD) camera. The CCD/CMD camera takes pictures of the symbol and the picture is converted into digital data. The location and orientation of the two-dimensional bar code symbol is determined and verified. Defects and damages on the symbol are detected and corrected. The symbol is scanned to read the codewords of the two-dimensional bar code symbol.

Abstract translation: 一种使用电荷耦合器件（CCD）照相机或电荷调制装置（CMD）照相机对二维条形码符号进行解码的方法和装置。 CCD / CMD摄像机拍摄符号图像并将图像转换为数字数据。 确定并验证二维条形码符号的位置和方向。 检测并纠正符号的缺陷和损坏。 扫描符号以读取二维条形码符号的码字。

公开(公告)号：US5138140A

公开(公告)日：1992-08-11

申请号：US571510

申请日：1990-08-22

Applicant: Bish Siemiatkowski ,  Ynjiun P. Wang ,  Stephen J. Shellhammer ,  Joseph Katz ,  Timothy Williams

Inventor： Bish Siemiatkowski ,  Ynjiun P. Wang ,  Stephen J. Shellhammer ,  Joseph Katz ,  Timothy Williams

IPC: G06K7/10 ,  G06K9/22 ,  G06K9/32 ,  G06K19/14 ,  H04N1/047

CPC classification number: H04N1/047 ,  G06K19/14 ,  G06K9/3216 ,  G06K2209/01 ,  H04N2201/0471

Abstract: Two-dimensional information such as a written signature can be captured and subsequently reconstructed by using an electro-optical scanner. A multi-row preamble code and a multi-row postamble code flank the signature, and each code has a row identifier for identifying which row is being scanned by a scan line emitted by the scanner, as well as start/stop data for identifying when each scan line traverses the boundaries of a space containing the signature.

Abstract translation: 可以通过使用电光扫描器来捕获并记录诸如书写签名的二维信息。 签名侧面的多行前导码和多行后验码，并且每个代码具有行标识符，用于识别由扫描仪发射的扫描线正在扫描哪一行，以及用于识别何时启动/停止数据 每个扫描线遍历包含签名的空间的边界。