公开(公告)号：US20170149857A1

公开(公告)日：2017-05-25

申请号：US15424614

申请日：2017-02-03

Applicant: VMware, Inc.

Inventor： Jonathan CLARK

IPC: H04L29/06 ,  H04N19/112 ,  H04L29/08

CPC classification number: H04L65/602 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/2842 ,  H04N19/112

Abstract: A server receives an update image for transmission to a client and encodes and compresses the update image data using a progressive encoding scheme. In one embodiment, the image data is encoded using progressive JPEG encoding and then into a base64 text string. When insufficient network bandwidth is available to transmit all of the image data for the update image, the server transmits only a first portion of the encoded image data, which is sufficient to fully reproduce the original update image but at a lower quality. When more network bandwidth becomes available, an additional portion of the encoded image data is transmitted to the client. The client is able to append the additional portion to the first portion to refine the image represented at the client. This mechanism may be implemented using unmodified web browsers and servers to remote a computer graphical user interface display.

公开(公告)号：US20140181635A1

公开(公告)日：2014-06-26

申请号：US13725127

申请日：2012-12-21

Applicant: VMWARE, INC.

Inventor： Jonathan CLARK

IPC: G06F17/22

CPC classification number: G06F17/2247 ,  G06F17/2252 ,  G06F17/30017 ,  G06T11/60 ,  H04N19/137 ,  H04N19/174 ,  H04N19/182 ,  H04N19/503 ,  H04N19/521 ,  H04N19/90

Abstract: Systems and methods described herein enable a residual error image to be added and rendered in an existing HTML canvas using native primitives. A current image and a residual error image containing pixel value differences between the current image and an updated image are received. A positive residual error image and a negative error image are generated from the residual error image. The positive residual error image is added to the current image to generate a partially updated image, and the partially updated image is xored to generate an inverse image. The negative residual error image is added to the inverse image to generate an updated inverse image, and xoring the inverse image to revert the inverse image to generate the updated image.

Abstract translation: 本文描述的系统和方法使残留误差图像能够使用本机原语在现有HTML画布中添加和呈现。 接收包含当前图像和更新图像之间的像素值差的当前图像和残差图像。 从残差图像生成正残差图像和负误差图像。 将正残余误差图像添加到当前图像以产生部分更新的图像，并且将部分更新的图像用于生成逆图像。 将负残留误差图像添加到逆图像以生成更新的反转图像，并且对反向图像进行反射以还原反转图像以生成更新的图像。