Generating and displaying spatially offset sub-frames

• US 20060082561A1
• Filed: 10/20/2004
• Published: 04/20/2006
• Est. Priority Date: 10/20/2004
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Allen, William J., Collins, David C., McClellan, Paul J.
• Granted Patent: US 7,474,319 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2300/0439 Pixel structures
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 3/007 Use of pixel shift techniques, e.g. by mechanical shift of the physical pixels or by optical shift of the perceived pixels
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

A display device for displaying an image using a first sub-frame and a second sub-frame is provided. The display device comprises an array having a first plurality of pixels and a second plurality of pixels offset from but overlapping the first plurality of pixels and a control unit. The control unit is configured to cause the array to display the first sub-frame using the first plurality of pixels, and the control unit is configured to cause the array to display the second sub-frame using the second plurality of pixels.

Claims

1. A display device for displaying an image using a first sub-frame and a second sub-frame, the display device comprising:

an array having a first plurality of pixels and a second plurality of pixels offset from but overlapping the first plurality of pixels; and

a control unit;

wherein the control unit is configured to cause the array to display the first sub-frame using the first plurality of pixels, and wherein the control unit is configured to cause the array to display the second sub-frame using the second plurality of pixels.

2. The display device of claim 1 wherein the first plurality of pixels comprises a first plurality of sets of four adjacent pixels, and wherein the second plurality of pixels comprises a second plurality of sets of four adjacent pixels.

5. The display device of claim 1 wherein the control unit is configured to cause the array to display the first sub-frame by providing a first value of a select signal to the array, and wherein the control unit is configured to cause the array to display the first sub-frame by providing a second value of a select signal to the array.

6. The display device of claim 5 wherein the array comprises a plurality of selector circuits configured to receive the select signal, wherein each of the plurality of selector circuits is configured to provide a first signal to the first plurality of pixels in response to receiving the first value of the select signal, and wherein each of the plurality of selector circuits is configured to provide a second signal to the second plurality of pixels in response to receiving the second value of the select signal.

7. The display device of claim 1 wherein the first plurality of pixels comprises a first plurality of rows, and wherein the second plurality of pixels comprises a second plurality of rows that overlap the first plurality of rows,

8. The display device of claim 1 wherein the first plurality of pixels comprises a first plurality of columns, and wherein the second plurality of pixels comprises a second plurality of columns that overlap the first plurality of columns.

9. The display device of claim 1 wherein the control unit is configured to cause the array to display the first sub-frame using the first plurality of pixels at a first time, and wherein the control unit is configured to cause the array to display the second sub-frame using the second plurality of pixels at a second time that is subsequent to the first time.

10. The display device of claim 1 wherein the first and second pluralities of pixels comprise a diagonal array.

11. The display device of claim 1 wherein the array comprises a third plurality of pixels and a fourth plurality of pixels, wherein the control unit is configured to cause the array to display a first color plane of the first sub-frame using the first plurality of pixels and a second color plane of the first sub-frame using the third plurality of pixels, and wherein the control unit is configured to cause the array to display a first color plane of the second sub-frame using the second plurality of pixels and a second color plane of the second sub-frame using the fourth plurality of pixels.

12. The display device of claim 11 wherein the first plurality of pixels is aligned with the third plurality of pixels, and wherein the second plurality of pixels is aligned with the fourth plurality of pixels.

13. The display device of claim 11 wherein the first plurality of pixels is aligned with the fourth plurality of pixels, and wherein the second plurality of pixels is aligned with the third plurality of pixels.

3. The display device of claim 3 wherein the second plurality of sets of four adjacent pixels is offset from the first plurality of sets of four adjacent pixels.

4. The display device of claim 3 wherein the second plurality of sets of four adjacent pixels is diagonally offset from the first plurality of sets of four adjacent pixels by a distance of one pixel.

14. A method of displaying an image in an array using a first sub-frame and a second sub-frame, the method comprising:

displaying the first sub-frame in a first plurality of pixels of the array at a first time; and

displaying the second sub-frame in a second plurality of pixels of the array that are offset from the first plurality of pixels at a second time that is subsequent to the first time.

15. The method of claim 14 further comprising:

generating a first signal configured to select the first plurality of pixels at the first time; and

generating a second signal configured to select the second plurality of pixels at the second time.

16. The method of claim 14 further comprising:

providing a first plurality of sub-frame pixel value from the first sub-frame to the first plurality pixels at the first time; and

providing a second plurality of sub-frame pixel value from the second sub-frame to the second plurality pixels at the second time.

17. The method of claim 14 wherein the first plurality of pixels comprises a first plurality of rows, and wherein the second plurality of pixels comprises a second plurality of rows that overlap the first plurality of rows,

18. The method of claim 14 wherein the first plurality of pixels comprises a first plurality of columns, and wherein the second plurality of pixels comprises a second plurality of rows that overlap the first plurality of columns,

19. The method of claim 14 wherein the first and second pluralities of pixels comprise a diagonal array.

20. The method of claim 14 wherein the first plurality of pixels comprises a first plurality of sets of four adjacent pixels, and wherein the second plurality of pixels comprises a second plurality of sets of four adjacent pixels.

21. The method of claim 20 wherein the second plurality of sets of four adjacent pixels is offset from the first plurality of sets of four adjacent pixels.

22. The method of claim 21 wherein the second plurality of sets of four adjacent pixels is diagonally offset from the first plurality of sets of four adjacent pixels by a distance of one pixel.

23. An array comprising:

a plurality of pixels arranged in a first row of pixels, a second row of pixels, and a third row of pixels; and

a selector circuit;

wherein the selector circuit is configured to provide a first data select signal to the first row of pixels and the second row of pixels, and wherein the selector circuit is configured to provide a second data select signal to the second row of pixels and the third row of pixels.

24. The array of claim 23 wherein the selector circuit is configured to provide the first data select signal to the first row of pixels and the second row of pixels in response to receiving a first value of a set select signal, and wherein the selector circuit is configured to provide a second data select signal to the second row of pixels and the third row of pixels in response to receiving a second value of a set select signal.

25. The array of claim 24 wherein the plurality of pixels is arranged in a first column of pixels, a second column of pixels, and a third column of pixels, wherein the first column of pixels, the second column of pixels, and the third column of pixels are configured to receive a column data signal.

26. The array of claim 25 wherein the first data select signal is configured to cause a plurality of sub-frame pixel values to be displayed a first set of the plurality of pixels that are included in the first row of pixels, the second row of pixels, the first column of pixels, and the second column of pixels in response to the first value of the set select signal.

27. The array of claim 26 wherein the second data select signal is configured to cause the plurality of sub-frame pixel values to be displayed a second set of the plurality of pixels that are included in the second row of pixels, the third row of pixels, the second column of pixels, and the third column of pixels in response to the second value of the set select signal.

28. A system for displaying an image in an array having a plurality of pixels using a first sub-frame having a first plurality of sub-frame pixel values and a second sub-frame having a second plurality of sub-frame pixel values, the system comprising:

means for receiving an address, the first plurality of sub-frame pixel values, the second plurality of sub-frame pixel values, and a select signal;

means for providing the first plurality of sub-frame pixel values to a first plurality of sets of the plurality of pixels for display using the address in response to a value of the select signal being associated with the first sub-frame; and

means for providing the second plurality of sub-frame pixel values to a second plurality of sets of the plurality of pixels for display using the address in response to the value of the select signal being associated with the second sub-frame.

29. The system of claim 28 further comprising:

means for generating the select signal.

30. The system of claim 28 wherein each of the first sets of the plurality of pixels comprises a first set of four adjacent pixels from the plurality of pixels, and wherein each of the second sets of the plurality of pixels comprises a second set of four adjacent pixels from the plurality of pixels.

31. The system of claim 30 wherein each of the second sets of four adjacent pixels is offset from each of the first sets of four adjacent pixels.

32. The system of claim 30 wherein each of the second sets of four adjacent pixels is diagonally offset from one of the first sets of four adjacent pixels by a distance of one pixel.