Cisco Technology, Inc.

Jiannong Gu

Hailei Sheng

He Huang

Guangbing Liu

Xiang Yang Li

Haitao Xin

In one embodiment, a presenter device participates in an online collaborative computing session, and a determination is made to whether application windows on the presenter device are shared or non-shared, where shared application windows have a viewable portion on a display of the presenter device that may be transmitted to one or more attendee devices of the online collaborative computing session. Each of the one or more non-shared application windows on the display of the presenter device may be grayed out, such as by covering the non-shared application windows with a semi-transparent window.

Distinguishing shared and non-shared applications during collaborative computing sessions

In one embodiment, a display of a source device is shared with one or more viewer devices, e.g., of an online collaborative computing session, and the display is divided into a plurality of identified blocks. In response to changes in the display, the source device determines an outer boundary of an updated region affected by the change, where the updated region defines a plurality of 'update blocks' of the identified blocks within the outer boundary. Images within each update block may then be compared to a previous version of the corresponding update block to determine if that individual update block is affected by the change. Any unchanged update blocks may be converted to an easily compressible image, and the source device may then compress and transmit the updated region to the viewer devices, where the transmitted updated region has instructions to use previous versions of unchanged converted update blocks.

Efficient transmission of changing images using image caching

In one embodiment, a presenter device may determine displayed windows of applications, and may provide individual window sharing selectability (e.g., shared or unshared), as well as entire application sharing selectability (shared, unshared, or neither). In particular, the entire application sharing selectability takes priority over individual window sharing selections (i.e., all windows of shared applications are shared and all windows of unshared applications are unshared). Based on individual window sharing selections and entire application sharing selections, a set of presenter device windows that are to be shared with the attendee devices may be determined, as well as a set of unshared windows that are not to be shared with the attendee devices, and the presenter device may share the set of shared windows with the attendee devices, without sharing the set of unshared windows.

Efficiently sharing windows during online collaborative computing sessions

The methods and apparatuses detect a color of each of a plurality of pixels within a frame; group a portion of the plurality of pixels having a common color into a block; and generate a color list including the common color based on a threshold value corresponding to the block.

Methods and apparatuses for generating compressed data representing a visual frame

The methods and apparatuses detect a plurality of pixels within a frame; separate a portion of the plurality of pixels into a lossless category based on inclusion of the portion of the plurality of pixels within a color list; and identify a particular pixel as an isolated pixel through a single point identification module wherein the particular pixel is within the portion of the plurality of pixels.

Growing community of inventors

Sunnyvale, CA, United States of America

Jiannong Gu