Method and system for generating a graphical display for a remote terminal session

• US 8,131,817 B2
• Filed: 04/23/2008
• Issued: 03/06/2012
• Est. Priority Date: 03/14/2002
• Status: Expired due to Term

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Inventors: Duursma, Martin, Laborczfalvi, Lee, Panasyuk, Anatoliy, Robinson, David
• Primary Examiner(s): NGUYEN, MINH CHAU
• Application Number:
  US12/108,016
• Publication Number:
  US 20080201405A1
• Time in Patent Office: 1,413 Days
• Field of Search: None
• US Class Current: 709/217
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces
• CPC Class Codes: G09G 2320/10 Special adaptations of display systems for operation with variable images
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display

Abstract

In one aspect the invention relates to a method for generating a graphical display for a remote terminal session. The method includes monitoring output produced by an application program executing on a server, identifying a bitmap representation within the output produced by the application program and determining a check value for the bitmap representation. The method also includes retrieving a compressed data format of the bitmap representation based at least in part on the check value and transmitting to the remote terminal session the compressed data format in place of the bitmap representation.

Claims

1. A method for generating a graphical display, the method comprising:

analyzing display output via an output filter executing on a first computing device, the display output comprising bitmap display data and textual data generated by an application executing on the first computing device, and displayed on a display device connected to a second computing device;

identifying, by the output filter, within the display output bitmap display data corresponding to a bitmap representation of a non-textual element;

calculating, by the output filter, a check value representative of the bitmap representation of the non-textual element;

determining, by the first computing device, whether the calculated check value matches a second check value on a repository of the second computing device, the second check value corresponding to the bitmap representation of the non-textual element; and

if the calculated check value does not match the second check value, retrieving, by the output filter from a repository of the first computing device, a compressed format data element of the bitmap display data based on the calculated check value matching a first check value in the repository of the first computing device and transmitting, by the first computing device to the second computing device, the retrieved compressed format data element in place of the bitmap representation of the non-textual element,

else, transmitting, by the first computing device to the second computing device, graphical display interface commands associated with the bitmap display data along with the textual data.

2. The method of claim 1, wherein identifying bitmap display data further comprises identifying one or more non-textual elements.

3. The method of claim 1, wherein identifying bitmap display data further comprises identifying one or more non-textual elements transmitted as display image data.

4. The method of claim 1, wherein calculating further comprises calculating a string representative of the bitmap display data.

5. The method of claim 1, wherein calculating further comprises calculating a plurality of check values representative of the bitmap display data.

6. The method of claim 1, further comprising searching the repository of the first computing device.

7. The method of claim 1, further comprising searching the repository of the second computing device.

8. The method of claim 1, further comprising transmitting to the second computing device the textual data along with the compressed format data element.

9. The method of claim 1, further comprising searching a repository installed on a third computing device.

10. The method of claim 1, further comprising searching a repository having a portion installed on a third computing device.

11. The method of claim 1, further comprising:

determining a rendering component does not exist on the second computing device in communication with the first computing device; and

transmitting the bitmap display data from the first computing device to the second computing device.

12. A system for generating a graphical display, the system comprising

an output filter executing on a first computing device to:

analyze display output comprising bitmap display data and textual data, the display output generated by an application executing on the first computing device, and displayed on a display device connected to a second computing device,

identify within the display output bitmap display data corresponding to a bitmap representation of a non-textual element,

calculate, by the output filter, a check value representative of the bitmap representation of the non-textual element,

wherein the first computing device determines whether the calculated check value matches a second check value on a repository of the second computing device, the second check value corresponding to the bitmap representation of the non-textual element, and

if the calculated check value does not match the second check value, the output filter retrieves from a repository of the first computing device a compressed format data element of the bitmap display data based on the calculated check value matching a first check value in the repository of the first computing device and the first computing device transmits to the second computing device the retrieved compressed format data element in place of the bitmap representation of the non-textual element,

else the first computing device transmits to the second computing device graphical display interface commands associated with the bitmap display data along with the textual data.

13. The system of claim 12, wherein the output filter identifies one or more non-textual elements.

14. The system of claim 12, wherein the output filter identifies one or more non-textual elements transmitted as display image data.

15. The system of claim 12, wherein the output filter calculates a string representative of the bitmap display data.

16. The system of claim 12, wherein the output filter calculates a check value representative of the bitmap display data.

17. The system of claim 12, wherein the output filter searches the repository of the first computing device.

18. The system of claim 12, wherein the output filter searches a repository of the second computing device.

19. The system of claim 12, wherein the first computing device transmits to the second computing device the textual data along with the compressed format data element.

20. The system of claim 12, wherein the output filter searches a repository installed on a third computing device.

21. The system of claim 12, wherein the output filter searches a repository having a portion installed on a third computing device.

22. The system of claim 12, wherein the output filter:

determines a rendering component does not exist on the second computing device in communication with the first computing device; and

transmits the bitmap display data from the first computing device to the second computing device.