Abstract: A method and apparatus for image encoding. In one embodiment, the method comprises encoding a first image portion by a first encoder associated with a first processor at a host system; dynamically determining a requirement to encode a second image portion by the first encoder or by a second encoder associated with a second processor at the host system; and encoding, based on the requirement, the second image portion by the first encoder or the second encoder.

Abstract: A method of encoding an input image divided into a set of image blocks and stored in computer readable memory. In one embodiment, the method comprises determining a sequence of block test patterns, each (i) identifying, for each image block of the set, a separate portion of the image block; and (ii) determined to minimize a maximum unidentified portion size of the input image when used on all image blocks of the set; assembling an active block test pattern comprising one of the block test patterns; comparing, based on the active block test pattern, at least one image block of the set with a reference image comprising a previously encoded copy of the input image to generate a block change detection; and encoding, based on the block change detection, a changed image block of the at least one image block to generate a portion of an encoded image.

Abstract: A method and system for communicating a display image. The method comprises (a) compressing, by a first application on a first processor, initial updates; (b) determining, by the first application, availability of a second processor comprising compression hardware not in the first processor; (c) determining, by a second application on the first processor, a requirement to compress, by the second processor, future image updates; (d) compressing, by the second processor a first future image update; (e) initiating, by the first application on the first or a third processor, compressing by the second processor of a second future image update; (f) determining, by the first application, an unavailability of the second processor; (g) compressing, by the first application subsequent future image updates, including the second future image update, to generate compressed updates; and (h) transmitting the compressed initial updates, the compressed first update, and the compressed updates to a remote computer.

Abstract: A method and apparatus for transferring data from a first to a second memory of a computer system. The method comprises (i) initializing a descriptor with a description of physical addressing of a first section of a first array of the first memory; (ii) updating a mask associated with the descriptor with an indication for transferring data from a first sub-section of the first section to the second memory, the mask and the data managed by an application on a first virtual machine of the computer system, the application isolated from the physical addressing of the first section; (iii) responsive to the updated mask, (a) determining physical addresses of the first sub-section based on the description, and (b), transferring the data from the first sub-section to the second memory; and (iv) clearing at least a portion of the updated mask to indicate completion of transferring the data.