ENERGY SAVING DRIVING SEQUENCE FOR A DISPLAY

• US 20110109615A1
• Filed: 11/12/2009
• Published: 05/12/2011
• Est. Priority Date: 11/12/2009
• Status: Abandoned Application

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: Qualcomm MEMS Technologies Incorporated (Qualcomm, Inc.)
• Inventors: Mulabagal, Pavankumar, Seo, Jae Hyeong, Mignard, Marc Maurice
• Application Number:
  US12/617,582
• Publication Number:
  US 20110109615A1
• Time in Patent Office: Days
• US Class Current: 345/214
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2310/0213 controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3466 based on interferometric effect

Abstract

A method of writing a display image to a display having an array of pixels according to a selected driving sequence. One driving sequence includes addressing each color row in a line of the array in a sequence before addressing a second line. Another driving sequence includes addressing a first color row of each line in the array before addressing a second color row of each line in the array.

Claims

1. A method of writing a display image to a display having an array of pixels, comprising:

for at least one line in a frame, selecting from at least one of two predefined driving sequences;

writing data to a display in accordance with the selected driving sequence,

wherein one of the driving sequences comprises addressing each color row in the selected line in a sequence before addressing a second line, and

wherein one of the driving sequences comprises addressing a first color row of each line in the frame before addressing a second color row of each line in the frame.

2. The method of claim 1, wherein the driving sequence is selected from one of:

a red row of the selected line, a green row of the selected line, a blue row of the selected line;

the green row, the blue row, the red row; and

the blue row the red row, the green row.

3. The method of claim 1, wherein selecting from at least one of two predefined driving sequences comprises:

for each line in the frame, comparing a blue row to a red row, comparing the blue row to a green row, and comparing the red row to the green row; and

selecting from at least one of two predefined driving sequences based on the comparisons.

4. The method of claim 1, wherein the display is a bi-stable display comprising an array of pixels, said pixels having an actuated state and an un-actuated state.

6. The method of claim 1, wherein each line comprises three color rows.

7. The method of claim 6, wherein comparing at least two color rows comprises:

comparing a first color row to a second color row;

comparing the first color row to a third color row; and

comparing the second color row to the third color row.

5. The method of claim 5, wherein the pixels in the array comprise interferometric modulator pixels.

8. A method of writing a display image to a display having an array of pixels comprising:

for at least one line in a frame, comparing at least two color rows; and

selecting from at least one of two predefined driving sequences based on the comparison.

9. The method of claim 8, further comprising writing to a display in accordance with the selected driving sequence.

10. The method of claim 8, wherein the display is a bi-stable display comprising an array of pixels, said pixels having an actuated state and an un-actuated state.

11. The method of claim 10, wherein the pixels in the array comprise interferometric modulator pixels.

12. The method of claim 8, wherein each line comprises three color rows.

13. The method of claim 12, wherein comparing at least two color rows comprises:

comparing a first color row to a second color row;

comparing the first color row to a third color row; and

comparing the second color row to the third color row.

14. A display apparatus comprising:

a memory storing image data;

a processor configured to receive said image data and select from at least one of two pre-defined row-addressing order based on comparison of at least two color rows for one or more lines of the image data; and

a controller configured to present the image data to a display on a row-by-row basis according to the selected pre-defined row-addressing order.

15. The display apparatus of claim 14, wherein the at least one of two pre-defined row addressing order is selected from one of:

addressing each color row in the selected line in a sequence before addressing a second line; and

addressing a first color row of each line in the frame before addressing a second color row of each line in the frame.

16. The display apparatus of claim 14, wherein the pre-defined row-addressing order for each line is selected from one of:

a red row of the selected line, a green row of the selected line, a blue row of the selected line;

the green row, the blue row, the red row; and

the blue row the red row, the green row.

17. The display apparatus of claim 14, wherein the comparison of at least two color rows for one or more lines of the image data comprises:

for each line, comparing a first color row to a second color row;

for each line, comparing the first color row to a third color row; and

for each line, comparing the second color row to the third color row.

18. The display apparatus of claim 14, wherein the memory is a frame buffer.

19. The display apparatus of claim 14, further comprising:

a processor that is configured to communicate with said display, said processor being configured to process image data; and

a memory device that is configured to communicate with said processor.

20. The display apparatus as recited in claim 19, further comprising a driver circuit configured to send at least one signal to said display.

21. The display apparatus as recited in claim 19, further comprising a controller configured to send at least a portion of said image data to said driver circuit.

22. The display apparatus as recited in claim 19, further comprising an image source module configured to send image data to said processor.

23. The display apparatus as recited in claim 22, wherein said image source module comprises at least one of a receiver, transceiver, and transmitter.

24. The display apparatus of recited in claim 19, further comprising an input device configured to receive input data and to communicate said input data to said processor.

25. A display apparatus comprising:

means for receiving image data;

means for comparing at least two color rows for one or more lines of the image data;

means for selecting from at least one of two pre-defined row-addressing orders based on said comparison; and

means for presenting the image data to a display in accordance with the selected row-addressing order.

26. The display apparatus of claim 25, wherein the receiving means comprises a processor.

27. The display apparatus of claim 25, wherein the receiving means comprises a driver controller.

28. The display apparatus of claim 25, wherein the receiving means comprises an array driver.

29. The display apparatus of claim 25, wherein the comparing means comprises a processor.

30. The display apparatus of claim 25, wherein the comparing means comprises a driver controller.

31. The display apparatus of claim 25, wherein the comparing means comprises an array driver.

32. The display apparatus of claim 25, wherein the selecting means comprises a processor.

33. The display apparatus of claim 25, wherein the selecting means comprises a driver controller.

34. The display apparatus of claim 25, wherein the selecting means comprises an array driver.

35. The display apparatus of claim 25, wherein the presenting means comprises an array driver.

36. The display apparatus of claim 25, wherein the at least one of two pre-defined row addressing order is selected from one of:

addressing each color row in the selected line in a sequence before addressing a second line; and

addressing a first color row of each line in the frame before addressing a second color row of each line in the frame.

37. The display apparatus of claim 25, wherein the pre-defined row-addressing order for each line is selected from one of:

a red row of the selected line, a green row of the selected line, a blue row of the selected line;

the green row, the blue row, the red row; and

the blue row the red row, the green row.

38. The display apparatus of claim 25, wherein the comparison of at least two color rows for one or more lines of the image data comprises:

for each line, comparing a first color row to a second color row;

for each line, comparing the first color row to a third color row; and

for each line, comparing the second color row to the third color row.