Variable refresh rates for portions of shared screens

1. A computer-implemented method to set refresh rates for different portions of a shared screen in a sharing session, comprising:

setting, by a processor, an initial refresh rate for the sharing session, wherein the sharing session is between a display device that displays the shared screen and a remote client device that displays the shared screen;

selecting, by the processor, a portion of the shared screen;

selecting, by the processor, a refresh rate for the selected portion of the shared screen that is different from the initial refresh rate for the sharing session, wherein the selected refresh rate is a real number for how often the selected portion of the shared screen is refreshed each second, and wherein the selected refresh rate is selected from one of a first range including a high refresh rate, a medium refresh rate, and a low refresh rate, and wherein the low refresh rate is approximately 0.1 Hz, the high refresh rate is approximately 2 Hz, and the medium refresh rate is one of approximately 0.5 Hz and approximately 0.9Hz; and

refreshing, by the processor, the selected portion based on the selected refresh rate and a portion not selected based on the initial refresh rate.

2. The computer-implemented method of claim 1 , wherein the selected portion comprises an area surrounding a pointer on the screen, wherein the area moves as the pointer moves on the screen.

3. The computer-implemented method of claim 2 , wherein the area surrounding the pointer on the screen is a circle having a radius around a location of the pointer.

4. The computer-implemented method of claim 1 , further comprising:

displaying, by the processor, an input on the shared screen for selecting the refresh rate.

5. The computer-implemented method of claim 1 , wherein the selected portion comprises a first window and further comprising:

selecting, by the processor, a refresh rate that is high for a second window receiving an input from a pointer; and

updating, by the processor, the refresh rate for the first window to a refresh rate that is lower.

6. The computer-implemented method of claim 1 , wherein the selected portion comprises a window and further comprising:

selecting, by the processor, a high priority rate for a window that is currently in use, wherein the window is currently selected and on top of any other window.

7. The computer-implemented method of claim 1 , further comprising:

receiving, by the processor, an input from a pointer in the portion; and

selecting, by the processor, the portion receiving the input from the pointer.

8. The computer-implemented method of claim 1 , further comprising:

receiving, by the processor, an input from a pointer in a set of portions indicating a location of the pointer;

tracking, by the processor, the location of the pointer in the set of portions over an interval of time;

determining, by the processor, the location of the pointer in each portion of the set of portions over the interval of time; and

selecting, by the processor, the portion of the set of portions where the pointer is located most frequently.

9. The computer-implemented method of claim 8 , further comprising:

selecting, by the processor, a highest refresh rate for the portion of the set of portions where the pointer is located most frequently and a lowest refresh rate for a portion of the set of portions where the pointer is located least frequently.

10. The computer-implemented method of claim 1 , wherein the refresh rate selected for the portions not selected is based on a type of application running in each portion.

11. The computer-implemented method of claim 1 , wherein the first range further comprises a set of second ranges, each second range comprising a set of values for the high refresh rate, the medium refresh rate, and the low refresh rate respectively.