公开(公告)号：US06963890B2

公开(公告)日：2005-11-08

申请号：US09871198

申请日：2001-05-31

Applicant: Santanu Dutta ,  David Molter

Inventor： Santanu Dutta ,  David Molter

IPC: G06T5/20 ,  H03H17/02 ,  G06F17/10

CPC classification number: H03H17/0275 ,  H03H17/0294

Abstract: A hardware-configurable digital filter is adaptable for providing multiple filtering modes. In one embodiment, the digital filter includes a register-based array of logic circuitry, computational circuitry and mode selection circuitry. By reconfiguring data flow within the logic circuitry and the computational circuitry, the mode selection circuitry switches the digital filter between different ones of the multiple filtering modes. Each of the multiplication and addition logic circuits has outputs and inputs selectably coupled to the other of the multiplication and addition logic circuits along a Y direction, with the selectivity being responsive to the mode selection circuitry for arranging the registers as being functionally linear or functionally nonlinear. In a more specific embodiment the filtering modes include polyphase filtering and general purpose filtering applications (such as FIR filtering), and in another more specific embodiment the filtering modes include polyphase direct filtering, polyphase transposed filtering, and at least one general purpose filtering. A specific example application of the above type of digital filter is directed to filtering video pixel components, for example, in resizing a horizontal line of pixels.

Abstract translation: 硬件可配置的数字滤波器适用于提供多种过滤模式。 在一个实施例中，数字滤波器包括基于寄存器的逻辑电路阵列，计算电路和模式选择电路。 通过重新配置逻辑电路和计算电路内的数据流，模式选择电路在多个滤波模式的不同之间切换数字滤波器。 乘法和加法逻辑电路中的每一个具有输出和输入，其可选择性地耦合到沿着Y方向的乘法和加法逻辑电路中的另一个，其选择性响应于模式选择电路，用于将寄存器布置为功能线性或功能非线性 。 在更具体的实施例中，滤波模式包括多相滤波和通用滤波应用（例如FIR滤波），并且在另一个更具体的实施例中，滤波模式包括多相直接滤波，多相转置滤波和至少一个通用滤波。 上述类型的数字滤波器的具体示例应用涉及滤波视频像素分量，例如，在调整水平线像素的大小中。

公开(公告)号：US12278686B2

公开(公告)日：2025-04-15

申请号：US18445635

申请日：2023-12-01

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B7/185

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

公开(公告)号：US12132562B2

公开(公告)日：2024-10-29

申请号：US18445636

申请日：2023-12-01

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B7/185

CPC classification number: H04B7/18515 ,  H04B7/18513

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

公开(公告)号：US20170082756A1

公开(公告)日：2017-03-23

申请号：US15265087

申请日：2016-09-14

Applicant: Ajay S. Parikh ,  Santanu Dutta

Inventor： Ajay S. Parikh ,  Santanu Dutta

IPC: G01S19/37 ,  G01S19/22

Abstract: A frequency drift compensation system for a radio receiver includes a pilot signal generator that is configured to generate two pilot signals, a local oscillator that is configured to generate a local oscillator frequency signal, a first mixer that generates a first offset pilot signal, a second mixer that generates a second offset pilot signal, and a summer that is configured to add the first offset pilot signal and the second offset pilot signal to the intermediate frequency signal to obtain a composite signal. The frequency drift compensation system includes a processor that is configured to detect frequency drift in the offset pilot signal responsive to the composite signal and to generate a frequency drift control signal to compensate for the frequency drift. Related radio receivers, GPS receivers, and methods are described.

公开(公告)号：US08350900B2

公开(公告)日：2013-01-08

申请号：US12637767

申请日：2009-12-15

Applicant: Santanu Dutta ,  Gerrit Ary Slavenburg ,  David R Cook

Inventor： Santanu Dutta ,  Gerrit Ary Slavenburg ,  David R Cook

IPC: H04N13/02

CPC classification number: H04N13/133 ,  H04N13/128 ,  H04N13/144 ,  H04N13/334 ,  H04N2213/002

Abstract: A method includes reducing a red rivalry through adjusting a color temperature on a first image, converting the first image from the RGB domain to a YCbCr domain, shifting a hue of a red color in the first image towards a magenta color to reduce a red color vibrancy, and adjusting a blue color in the first image such that a dark blue visible through a second lens corresponding to a second image is at least partially visible through a first lens corresponding to the first image. The method also includes reducing the red rivalry through adjusting a tone of the red color in the first image towards a brown color, converting the first image from the YCbCr domain back to the RGB domain, adjusting a color saturation in the first image, and combining the first image with the second image in a processor to generate an anaglyph image.

Abstract translation: 一种方法包括通过调节第一图像上的色温来减少红色对比，将第一图像从RGB域转换为YCbCr域，将第一图像中的红色色调转移到品红色以减少红色 并且调节第一图像中的蓝色，使得通过对应于第二图像的第二透镜可见的深蓝色通过对应于第一图像的第一透镜至少部分可见。 该方法还包括通过将第一图像中的红色调调到棕色来减少红色对比，将第一图像从YCbCr域转换回RGB域，调整第一图像中的色彩饱和度，以及组合 在处理器中具有第二图像的第一图像以生成浮雕图像。

公开(公告)号：US08238818B2

公开(公告)日：2012-08-07

申请号：US12341070

申请日：2008-12-22

Applicant: Peter D. Karabinis ,  Santanu Dutta ,  Gary G. Churan

Inventor： Peter D. Karabinis ,  Santanu Dutta ,  Gary G. Churan

IPC: H04B7/185

CPC classification number: H04B7/18515 ,  H04B7/0408 ,  H04B7/10 ,  H04B7/2041

Abstract: A processor for use in a satellite communications system includes a selector that is configured to select a subset of a plurality of spatially diverse satellite signals based upon a location of a radioterminal. The processor further includes a signal processor that is configured to detect a return-link transmission from the radioterminal responsive to the selected subset of the spatially diverse satellite signals. The respective spatially diverse satellite signals may include respective signals corresponding to respective antenna elements of a satellite. The selector and the signal processor may be ground based.

公开(公告)号：US08122489B2

公开(公告)日：2012-02-21

申请号：US12195485

申请日：2008-08-21

Applicant: Santanu Dutta ,  Nils Rydbeck

Inventor： Santanu Dutta ,  Nils Rydbeck

IPC: G06F7/04

CPC classification number: G06Q20/327 ,  G06Q20/045 ,  G06Q20/12 ,  G06Q20/32 ,  G06Q20/363 ,  G06Q20/367 ,  G06Q20/3672 ,  G06Q20/3674 ,  G06Q20/3676 ,  G06Q20/3678 ,  G07B15/00 ,  G07F7/0866 ,  G07F7/1016

Abstract: An approach to managing stored-value data objects, such as electronic tickets, comprises secure systems and procedures for ticket issuing, storage, and redemption. With these systems and procedures in place, stored-value data objects may be securely transferred to remote systems, such as a user's personal electronic device, for subsequent secure redemption, thus allowing the user to gain access to the desired goods or service upon redeeming the data object. Techniques provide secure delivery of the requested data object to the requesting device, and provide secure redemption and disposal of the data object. Ticket issuing systems may be Internet-accessible systems, and users may purchase and redeem tickets using mobile terminals or other devices adapted for wireless communication. Standardized WPKI and Internet access procedures may be employed in ticket issuance and redemption. Techniques further provide temporary and rapid verification data objects useful where rapid ticket verification is essential, such as mass transit systems.

公开(公告)号：US07747229B2

公开(公告)日：2010-06-29

申请号：US11281078

申请日：2005-11-17

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B1/06

CPC classification number: H04B7/0695 ,  H01Q3/24 ,  H01Q21/205 ,  H04B7/0608 ,  H04B7/0805 ,  H04B7/082 ,  H04B7/0874 ,  H04B7/088

Abstract: Communications device may include a plurality of antenna elements, an ancillary control receiver, and a primary receiver. The plurality of antenna elements may provide respective fixed beams. The ancillary control receiver may be coupled to each of the antenna elements, and the ancillary control receiver may be configured to measure a signal strength from each of the antenna elements and to select one of the antenna elements responsive to the measured signal strengths. The primary receiver may be configured to receive communications using the selected antenna element. Related methods are also discussed.

Abstract translation: 通信设备可以包括多个天线元件，辅助控制接收器和主接收器。 多个天线元件可以提供相应的固定光束。 辅助控制接收器可以耦合到每个天线元件，并且辅助控制接收器可以被配置为测量来自每个天线元件的信号强度，并且响应于测量的信号强度来选择天线元件之一。 主接收机可以被配置为使用所选择的天线元件接收通信。 还讨论了相关方法。

公开(公告)号：US20100159922A1

公开(公告)日：2010-06-24

申请号：US12715070

申请日：2010-03-01

Applicant: Jérome Tronc ,  Christian Calamarte ,  Michel Mouly ,  Santanu Dutta

Inventor： Jérome Tronc ,  Christian Calamarte ,  Michel Mouly ,  Santanu Dutta

IPC: H04W4/00 ,  H04W36/00

CPC classification number: H04B7/18563 ,  H04B7/18591 ,  H04W36/14 ,  H04W36/30 ,  H04W84/06 ,  H04W88/06

Abstract: Apparatus, methods and computer program products that support inter-PLMN coordination in registration and handover operations are provided. Hysteresis is introduced in registration of radioterminals in a hybrid terrestrial/satellite mobile communications environment. Inter-PLMN handover techniques are provided, including techniques for coordination of communication of timing information and traffic channel controls.

Abstract translation: 提供了在注册和切换操作中支持PLMN间协调的装置，方法和计算机程序产品。 在混合地面/卫星移动通信环境中的无线电终端的注册中引入了滞后。 提供了PLMN间切换技术，包括用于协调定时信息和业务信道控制的通信的技术。

公开(公告)号：US20100141671A1

公开(公告)日：2010-06-10

申请号：US12332269

申请日：2008-12-10

Applicant: Santanu Dutta ,  Christos Chrysafis

Inventor： Santanu Dutta ,  Christos Chrysafis

IPC: G09G5/02

CPC classification number: G09G5/026 ,  G09G5/02 ,  G09G2340/06 ,  G09G2340/10

Abstract: Embodiments of the claimed subject matter provide a system and process for enhancing the display of color in a graphical display. In one embodiment, a process is provided for color enhancement using a detection volume and a shift volume. In one embodiment, input from pixels, as color data, is compared to a detection volume. If the color data of an input is detected in the detection volume, the color data is modified to a corresponding position in the shift volume, the modification consisting of an enhancement to the original color.

Abstract translation: 所要求保护的主题的实施例提供用于增强图形显示中的颜色显示的系统和过程。 在一个实施例中，提供了使用检测量和移位量进行颜色增强的处理。 在一个实施例中，将来自像素的输入作为颜色数据与检测体积进行比较。 如果在检测体积中检测到输入的颜色数据，则将颜色数据修改为移位体积中的对应位置，该修改包括对原始颜色的增强。