Microsoft Technology Licensing, LLC

Ati Technologies Ulc

Charles Ogden

Aaftab A Munshi

Milivoje M Aleksic

B Anil Kumar

Hao Zhang

Parag Chakraborty

Bita Gorjiara

Paul Johan Hsieh

Asael Dror

William Robert Williams

Ricardo A Baratto

Timothy Haydon Ward

In various embodiments, a screen image may be divided into rectangles, and a capture component may track changed rectangles and capture the screen upon receiving an indication. For small screen updates, the capture rate may be set to &#x2dc;30 captures per second to provide a lower latency. As the screen update size increases, the capture rate may be decreased to match an allocated bandwidth. The capture rate may be increased when available bandwidth increases and decreased as bandwidth decreases. For example, the capture rate may be decreased when downstream back pressure meets predefined criteria. The capture rate change may be effected gradually to avoid jerks and jumps. Varying the capture rate by also enable audio/video synchronization with varying bandwidth variations. Some embodiments may be extended to multiple monitor solutions.

Push pull adaptive capture

A system, method, and computer product for monitoring and benchmarking client devices from a server. A server, data center, and/or cloud computing environment may monitor certain aspects of a remote desktop session. The rendering, capture, and compression of a desktop may be monitored. The time between the sending of frames to a thin client can be monitored, the network bandwidth available can be monitored and the time between sending a frame and receiving a response from the thin client can be monitored. Based on these values, a benchmark for the remote desktop experience can be determined.

Monitoring and benchmarking client performance from the server-side

A block-based image compression method and encoder/decoder circuit compresses a plurality of pixels having corresponding original color values and luminance values in a block according to different modes of operation. The encoding circuit includes a luminance-level-based representative color generator to generate representative color values for each of a plurality of luminance levels derived from the corresponding luminance levels to produce at least a block color offset value and a quantization value. According to mode zero, each of the pixels in the block is associated with one of the plurality of generated representative color values to generate error map values and a mode zero color error value. According to mode one, representative color values for each of at least three luminance levels are also generated to produce at least three representative color values, corresponding bitmap values and a mode one color error value. A mode based compressed data generator is capable of operating in mode zero and/or one and produces block color mode zero data when the mode zero color error value is less than the mode one color error value, otherwise block color mode one data.

Block-based image compression method and apparatus

A block-based image compression method and encoder/decoder circuit compress a plurality of pixels in a block where each pixel includes a corresponding color value and a corresponding luminance value. The encoder circuit includes a luminance-level-based representative color generator to generate representative color values for each of a plurality of luminance levels to produce at least a high color value and a low color value. In response to generating the representative color values, the luminance-level-based representative color generator associates each of the pixels in the block with one of the plurality of representative color values to produce corresponding bitmap values. The encoder circuit further includes a color type block generator to perform at least one of: (a) generate block color data indicating a regular/alternate color block type and (b) representing a block color type by ordering the representative color values that are to be sent to a decoder. The alternate color type block data is generated based on at least comparing the representative low color value to a first brightness threshold and comparing the high color value to a second brightness threshold.

Growing community of inventors

Los Gatos, CA, United States of America

Charles Ogden