SYSTEM AND METHOD FOR RENDERING A HIGH-PERFORMANCE VIRTUAL DESKTOP USING COMPRESSION TECHNOLOGY

• US 20090323799A1
• Filed: 06/25/2008
• Published: 12/31/2009
• Est. Priority Date: 06/25/2008
• Status: Abandoned Application

• Current Assignee: STMicroelectronics Incorporated (STMicroelectronics NV)
• Original Assignee: STMicroelectronics Incorporated (STMicroelectronics NV)
• Inventors: McDade, Darryn D. SR.
• Application Number:
  US12/146,276
• Publication Number:
  US 20090323799A1
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: H04L 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet

Abstract

An embodiment of a network of extendable computer resources creates a virtual computing environment for a remote client. The network allocates at least some of the extendable computer resources to the virtual computing environment and compressively represents video output information of the virtual computing environment as an encoded data stream. The encoded data stream is communicated to the remote client, and input information to control the resources allocated to the virtual computing environment is received from the remote client. An embodiment of a local computing client receives a multiframe motion picture stream of encoded signals that represent the video output of a virtual computing environment hosted by a remote computer source. The local computing client decodes the motion picture stream, accepts input information operable to control the virtual computing environment, and communicates the input information to the remote computer source.

Claims

1. A method of distributed computing, comprising;

locally receiving a multiframe motion picture stream of encoded signals generated by a remote computer source, said stream representing video output of a virtual computing environment hosted by the remote computer source;

decoding said multiframe motion picture stream with a local computing client;

locally accepting input information operable to control the virtual computing environment; and

communicating the input information to the remote computer source.

2. The method of distributed computing of claim 1, further comprising:

formatting the decoded multiframe motion picture stream into a digitized video signal compatible with a video display format; and

presenting the formatted multiframe motion picture stream to an output port.

3. The method of distributed computing of claim 1 wherein the step of decoding said multiframe motion picture stream comprises:

storing data of the multiframe motion picture stream in a memory;

identifying constituent frames of the multiframe motion picture stream;

selecting an appropriate decoding algorithm from the group consisting of H.261, H.262, H.263, H.264₁ MPEG-1, MPEG-2, MPEG-4, REALVIDEO, VC-1, VP6, and WMV; and

processing the constituent frames according to the selected algorithm.

4. The method of distributed computing of claim 1 wherein the step of decoding said multiframe motion picture stream comprises;

storing data of the multiframe motion picture stream in a memory;

identifying constituent frames of the multiframe motion picture stream;

selecting an appropriate decoding algorithm, said algorithm decoding according to a method from the group comprising discrete cosine transform (DCT), fractal compression, matching pursuits, and discrete wavelet transform; and

processing the constituent frames according to the selected algorithm.

5. The method of distributed computing of claim 1 wherein the step of locally accepting input information comprises:

accepting user commands from a computer pointing device; and

accepting user commands from a computer keyboard.

6. A method of providing computing resources, comprising:

creating a virtual computing environment for a remote client within a network of extendable computer resources;

allocating at least some of the extendable computer resources to the virtual computing environment;

compressively representing video output information of the virtual computing environment as an encoded data stream;

communicating the encoded data stream to the remote client; and

receiving input from the remote client to control the resources allocated to the virtual computing environment.

7. The method of providing computing resources of claim 6, further comprising:

controlling the resources allocated to the virtual computing environment according to the input received from the remote client;

selectively allocating additional computer resources according to the input received from the remote client; and

selectively releasing allocated computer resources according to the input received from the remote client.

8. The method of providing computing resources of claim 6 wherein the step of creating the virtual computing environment for the remote client within the network of extendable computer resources comprises:

allocating a particular amount of virtual memory, said allocated virtual memory inaccessible by any other remote client;

instantiating, within the virtual memory, a graphical user interface that provides access to hardware and software resources within the network of extendable computer resources; and

presenting a representation of the graphical user interface window to components configured to encode the representation as a multiframe motion picture stream.

9. The method of providing computing resources of claim 6 wherein the step of compressively representing video output information of the virtual computing environment as the encoded data stream comprises:

capturing the video output information of the virtual computing environment, which is presentable as a graphical user interface; and

encoding said video output information according to an appropriate encoding algorithm.

10. A computing client apparatus, comprising:

a receiving circuit;

a decoder coupled to the receiving circuit, the decoder configured to decode a data stream encoded with an algorithm, said data stream representing a display output from a virtual machine running on a remote computer;

a processing circuit adapted to arrange the decoded data stream into a video display format;

a presentation circuit adapted to communicate the arranged decoded data stream to an output display device;

an input circuit configured to receive client input information; and

a transmitting circuit coupled to the input circuit, the transmitting circuit configured to communicate the client input information to the remote computer.

11. The computing client apparatus of claim 10 wherein the computing client apparatus is a set top box.

12. The computing client apparatus of claim 10, further comprising:

a demultiplexer to separate encoded video data from encoded audio data received with the receiving circuit; and

an audio decoder coupled to the receiving circuit, the audio decoder configured to decode an audio stream generated by the virtual machine running on the remote computer.

13. The computing client apparatus of claim 10, further comprising:

an overlay generation circuit configured to generate at least one virtual pointer; and

an overlay presentation circuit configured to present the generated at least one virtual pointer as an overlay onto the arranged decoded data stream representing the display output from the virtual machine.

14. The computing client apparatus of claim 10 wherein the input circuit comprises:

a circuit configured to accept input from a spatial motion detection device; and

an encoding circuit configured to encode the spatial motion input.

15. The computing client apparatus of claim 10 wherein the input circuit comprises:

a circuit configured to accept audio input from a transducer device; and

an encoding circuit configured to encode the audio input.

16. The computing client apparatus of claim 10, further comprising:

a keyboard input circuit configured to accept user input keystrokes;

a pointing device input circuit configured to accept planar coordinate information representing a location of a pointer within a window allocated to the virtual machine running on the remote computer; and

an encoding circuit configured to encode the user input keystrokes and planar coordinate information.

17. The computing client apparatus of claim 10 wherein the decoder coupled to the receiving circuit further comprises:

a memory;

a signal processor; and

a set of program instructions stored in the memory and executable by the signal processor to decode a received data stream according to an algorithm from the group consisting of H.261, H.262, H.263, H.264, MPEG-1, MPEG-2, MPEG-4, REALVIDEO, VC-1, VP6, and WMV.

18. The computing client apparatus of claim 10 wherein the decoder coupled to the receiving circuit further comprises:

a memory;

a signal processor; and

a set of program instructions stored in the memory and executable by the signal processor to decode a received data stream according to an algorithm that employs a method from the group comprising discrete cosine transform (DCT), fractal compression, matching pursuits, and discrete wavelet transform.

20. The computing server apparatus of claim 17, further comprising:

a processor configured to allocate additional computing resources according to the information received from the remote client and further configured to release computing resources according to the information received from the remote client.

19. A computing server apparatus, comprising:

an extendable network of computing resources;

an encoder, the encoder configured to compressively encode a video stream using an algorithm, said video stream derived from a virtual graphical user interface (GUI) of a virtual machine running within the extendable network of computing resources;

a transmitting circuit coupled to the encoder, the transmitting circuit operable to communicate an encoded video stream to a remote client; and

a receiving circuit operable to receive information from the remote client, the information configured to control the virtual machine.