公开(公告)号：US11137620B2

公开(公告)日：2021-10-05

申请号：US16263034

申请日：2019-01-31

Applicant: Julio Cesar Castañeda ,  Rajeev Ramanath

Inventor： Julio Cesar Castañeda ,  Rajeev Ramanath

IPC: G02C5/14 ,  G02C5/02 ,  H05K1/18 ,  A61B5/021 ,  A61B5/024 ,  G02C5/12 ,  G02C11/00

Abstract: In an example, the eyewear includes an optical element, electronic components, and a support structure configured to support the optical element and the electronic components. The support structure defines a region for receiving at least a portion of a head of a user. The eyewear also includes a biometric sensor coupled to the electronic components and supported by the support structure. The biometric sensor is attached to the support structure and positioned to detect, in the region, a biometric signal representative of a biometric of the user for processing by the electronic components.

公开(公告)号：US07928999B2

公开(公告)日：2011-04-19

申请号：US11782897

申请日：2007-07-25

Applicant: Andrew Ian Russell ,  David Foster Lieb ,  Rajeev Ramanath

Inventor： Andrew Ian Russell ,  David Foster Lieb ,  Rajeev Ramanath

IPC: G09G5/10

CPC classification number: G09G3/346 ,  G02B27/0994 ,  G09G3/2022 ,  G09G3/3406 ,  G09G2320/0626 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2360/16 ,  H04N9/3123

Abstract: In display systems employing spatial light modulators, the OFF-state light from OFF-state pixels of the spatial light modulator can be captured and directed back to the pixels of the spatial light modulator so as to recycle the OFF-state light in the display system. Bitplanes derived from the desired image to be produced are calibrated to include the recycled off-state light to properly produce the desired image using the display system.

公开(公告)号：US07898706B2

公开(公告)日：2011-03-01

申请号：US11781121

申请日：2007-07-20

Applicant: Rajeev Ramanath

Inventor： Rajeev Ramanath

IPC: G03F3/08 ,  G06K9/00 ,  G09G5/02

CPC classification number: H04N9/643

Abstract: System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.

Abstract translation: 维持感觉色彩恒定的系统和方法。 一种用于显示图像的方法包括：接收颜色矢量和相关联的图像数据，通过响应于亮度分量或色度分量的变化调整颜色矢量的色相分量，重新映射颜色矢量以维持感知色调恒定性 将重新映射的颜色矢量提供给用于显示的光源，以及显示与颜色矢量相关联的图像数据。 使用恒定色调曲线确保了颜色矢量的调整保持了颜色矢量的感知色调，从而有助于保持图像质量。

公开(公告)号：US07893945B2

公开(公告)日：2011-02-22

申请号：US11466102

申请日：2006-08-21

Applicant: Rajeev Ramanath ,  Gregory S. Pettitt

Inventor： Rajeev Ramanath ,  Gregory S. Pettitt

IPC: G09G5/02

CPC classification number: G06T11/001 ,  G09G5/06 ,  G09G2340/06 ,  H04N1/6058

Abstract: Disclosed embodiments relate to techniques for color gamut mapping when an input signal transmitting color visual images has a different color gamut than does the output display device. Polynomial rubber-sheet mapping may be used to translate the input color gamut to the output color gamut on a hue-by-hue basis within a three-dimensional perceptual color space. Also, a memory color look-up table may be used to preserve memory colors in the input gamut which are capable of reproduction within the output gamut. By using such techniques alone or in combination, it may be possible to more effectively map an input color gamut to a different output color gamut with improved calorimetric accuracy.

Abstract translation: 公开的实施例涉及当传输彩色视觉图像的输入信号具有与输出显示装置不同的色域时的色域映射的技术。 可以使用多项式橡胶片映射在三维感知色彩空间内以色相为基础将输入色域转换为输出色域。 此外，可以使用存储器颜色查找表来保留能够在输出色域内再现的输入色域中的存储器颜色。 通过单独或组合使用这些技术，可以更有效地将输入色域映射到具有改进的量热精度的不同输出色域。

公开(公告)号：US20100079503A1

公开(公告)日：2010-04-01

申请号：US12242232

申请日：2008-09-30

Applicant: Rajeev Ramanath ,  Kirk F. Settle ,  Jeffrey M. Kempf

Inventor： Rajeev Ramanath ,  Kirk F. Settle ,  Jeffrey M. Kempf

IPC: G09G5/10

CPC classification number: G09G3/3413 ,  G09G2320/0238 ,  G09G2320/0242

Abstract: In accordance with a particular embodiment of the present disclosure, color correction based on light intensity in imaging systems may be accomplished by applying a color correction data structure to color component values.

Abstract translation: 根据本公开的特定实施例，可以通过将颜色校正数据结构应用于颜色分量值来实现基于成像系统中的光强度的颜色校正。

公开(公告)号：US07558222B2

公开(公告)日：2009-07-07

申请号：US11091064

申请日：2005-03-28

Applicant: Nivedan Thadasina ,  Rajeev Ramanath ,  Rajasimann Vijayasimman

Inventor： Nivedan Thadasina ,  Rajeev Ramanath ,  Rajasimann Vijayasimman

IPC: H04L12/16 ,  H04Q11/00 ,  H04B7/00 ,  H04M3/42

CPC classification number: H04J3/1682 ,  H04W4/10 ,  H04W28/06 ,  H04W76/45 ,  H04W80/04

Abstract: A method for sending IP packets from a base station to a mobile station during transition of the mobile station from a dormant state to an active state is provided. The method includes receiving a lagging feature request from the mobile station. A physical layer of a traffic channel is established between the base station and the mobile station. A network layer of the traffic channel is established between the base station and the mobile station. After the physical layer of the traffic channel is established and while the network layer of the traffic channel is being established, the IP packets are packaged and sent to the mobile station in a particular format.

Abstract translation: 提供了一种在移动台从休眠状态转换到活动状态的过程中从基站向移动台发送IP分组的方法。 该方法包括从移动台接收滞后特征请求。 在基站和移动台之间建立业务信道的物理层。 在基站和移动台之间建立业务信道的网络层。 在业务信道的物理层建立之后，当业务信道的网络层正在建立时，IP包被打包并以特定格式发送到移动台。

公开(公告)号：US20090167955A1

公开(公告)日：2009-07-02

申请号：US11965671

申请日：2007-12-27

Applicant: Gregory S. Pettitt ,  Rajeev Ramanath

Inventor： Gregory S. Pettitt ,  Rajeev Ramanath

IPC: H04N9/64

CPC classification number: H04N9/67 ,  H04N5/202 ,  H04N9/69

Abstract: In one embodiment, an image decoding system for a YCbCr formatted signal includes a color space converter capable of representing an RGB image signal with one or two negative image signal components. The image decoding system further includes a degamma correction unit and an image signal formatter. An offset of the image black level from zero corresponding to the image signal offset produced by the color space converter is employed to perform degamma correction. In a further embodiment, gain, offset, and sign are removed from the image signal produced by the color space converter prior to degamma correction. The image signal formatter may utilize a one-dimensional and a three-dimensional lookup table to produce an image signal that may include secondary and white image components. The system advantageously accommodates decoding xvYCC-encoded image data in conventional as well as new hardware display system architectures.

Abstract translation: 在一个实施例中，用于YCbCr格式化信号的图像解码系统包括能够用一个或两个负图像信号分量表示RGB图像信号的色彩空间转换器。 该图像解码系统还包括一个伽马校正单元和一个图像信号格式器。 使用与由色空间转换器产生的图像信号偏移相对应的图像黑色电平与零的偏移来进行去角度校正。 在另一个实施例中，增益，偏移和符号在去除伽马校正之前从由颜色空间转换器产生的图像信号中去除。 图像信号格式器可以利用一维和三维查找表来产生可以包括次级和白色图像分量的图像信号。 该系统有利地容纳以常规的以及新的硬件显示系统架构解码xvYCC编码的图像数据。

公开(公告)号：US20080192151A1

公开(公告)日：2008-08-14

申请号：US11741972

申请日：2007-04-30

Applicant: Rajeev Ramanath ,  Takeshi Honzawa

Inventor： Rajeev Ramanath ,  Takeshi Honzawa

IPC: H04N9/12 ,  G06K9/40 ,  H04N5/66

CPC classification number: H04N9/3114

Abstract: In a method embodiment, a method for image processing includes receiving one or more signals indicative of an optical characteristic of one or more respective light beams. A transform is generated based on the received one or more signals. The transform converts a first plurality of image components encoded by a first plurality of colors to a second plurality of image components encoded by a second plurality of colors.

Abstract translation: 在方法实施例中，一种用于图像处理的方法包括接收指示一个或多个相应光束的光学特性的一个或多个信号。 基于所接收的一个或多个信号产生变换。 该变换将由第一多个颜色编码的第一多个图像分量转换为由第二多个颜色编码的第二多个图像分量。

公开(公告)号：US20080159645A1

公开(公告)日：2008-07-03

申请号：US11617096

申请日：2006-12-28

Applicant: Jeffrey Matthew Kempf ,  Rajeev Ramanath

Inventor： Jeffrey Matthew Kempf ,  Rajeev Ramanath

IPC: G06K9/40

CPC classification number: G06T5/002 ,  G06T2207/10016 ,  G06T2207/20008

Abstract: The noise reduction filter is intensity adaptive and incorporates directional variances of input images.

Abstract translation: 降噪滤波器是强度自适应的，并且包括输入图像的方向方差。

公开(公告)号：US20080122861A1

公开(公告)日：2008-05-29

申请号：US11604599

申请日：2006-11-27

Applicant: Rajeev Ramanath ,  Jeffrey Matthew Kempf

Inventor： Rajeev Ramanath ,  Jeffrey Matthew Kempf

IPC: G09G5/02

CPC classification number: G09G5/06 ,  G09G3/2044 ,  G09G3/346 ,  G09G2320/0276

Abstract: System and method for generating multiprimary signals with optimization for bit depth for use in display devices. A preferred embodiment comprises converting an input color signal into an output color signal, wherein the number of colors in the output color signal is less than a number of colors used in a display system, when a weighting of the input color signal is less than a specified threshold, and converting the input color signal into an output color signal, wherein the number of colors in the output color signal is equal to the number of colors used in the display system, when the weighting of the input color signal is greater than the specified threshold. The use of fewer colors eliminates low bit depth colors, allowing increased dither quality in dimmer images.

Abstract translation: 用于生成多原色信号的系统和方法，具有用于显示设备的位深度优化。 优选实施例包括将输入彩色信号转换为输出彩色信号，其中输出彩色信号中的颜色数量小于在显示系统中使用的颜色数量，当输入彩色信号的加权小于 并且将输入颜色信号转换为输出颜色信号，其中输入颜色信号中的颜色数量等于显示系统中使用的颜色数量，当输入颜色信号的加权大于 指定阈值。 使用较少的颜色可以消除低位深度颜色，从而在调光图像中增加抖动质量。