Generating and displaying spatially offset sub-frames

• US 20050275669A1
• Filed: 06/15/2004
• Published: 12/15/2005
• Est. Priority Date: 06/15/2004
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Collins, David C., Aufranc, Richard E. Jr.
• Application Number:
  US10/868,638
• Publication Number:
  US 20050275669A1
• Time in Patent Office: Days
• US Class Current: 345/698
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• 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 method of displaying an image with a display device is provided. The method comprises receiving image data comprising a first portion and a second portion for the image, generating a first plurality of sub-frames using the first portion and a simulation kernel, generating a second plurality of updated sub-frames using the second portion and the simulation kernel independently from generating the first plurality of sub-frames, and alternating between displaying a first one of the first plurality of updated sub-frames in a first position, displaying a second one of the first plurality of updated sub-frames in a second position spatially offset from the first position, displaying a first one of the second plurality of updated sub-frames in a third position spatially offset from the first and the second positions, and displaying a second one of the second plurality of updated sub-frames in a fourth position spatially offset from the first, the second, and the third positions.

Claims

1. A method of displaying an image with a display device, the method comprising:

receiving image data for the image, the image data comprising a first portion and a second portion;

generating a first plurality of sub-frames using the first portion and a first simulation kernel;

generating a second plurality of sub-frames using the second portion and the first simulation kernel independently from generating the first plurality of sub-frames; and

alternating between displaying a first one of the first plurality of sub-frames in a first position, displaying a second one of the first plurality of sub-frames in a second position spatially offset from the first position, displaying a first one of the second plurality of sub-frames in a third position spatially offset from the first and the second positions, and displaying a second one of the second plurality of sub-frames in a fourth position spatially offset from the first, the second, and the third positions.

2. The method of claim 1 wherein the first simulation kernel comprises first, second, and third rows which each comprise three coefficients, wherein the three coefficients of the first row have values of ½

, ½

, and 0, respectively, wherein the three coefficients of the second row have values of ½

, ½

, and 0, respectively, and wherein the three coefficients of the third row have values of 0, 0, and 0, respectively.

3. The method of claim 2 wherein the first plurality of sub-frames comprises a first plurality of sub-frame pixel values, wherein the second plurality of sub-frames comprises a second plurality of sub-frame pixel values, the method further comprising:

generating each of the first plurality of sub-frame pixel values using at least one of the first plurality of sub-frame pixel values; and

generating each of the second plurality of sub-frame pixel values using at least one of the second plurality of sub-frame pixel values.

4. The method of claim 1 wherein the first simulation kernel comprises first, second, and third rows which each comprise three coefficients, wherein the three coefficients of the first row have values of ⅛

, 2/8, and ⅛

, respectively, wherein the three coefficients of the second row have values of 2/8, 4/8, and 2/8, respectively, and wherein the three coefficients of the third row have values of ⅛

, 2/8, and ⅛

, respectively.

5. The method of claim 1 further comprising:

generating the first plurality of sub-frames using the first portion, the first simulation kernel, and a second simulation kernel;

generating the second plurality of sub-frames using the second portion, the first simulation kernel, and the second simulation kernel.

6. The method of claim 5 wherein the first simulation kernel comprises first, second, and third rows which each comprise three coefficients, wherein the three coefficients of the first row have values of ⅛

, 0, and ⅛

, respectively, wherein the three coefficients of the second row have values of 0, 4/8, and 0, respectively, and wherein the three coefficients of the third row have values of ⅛

, 0, and ⅛

, respectively, and wherein the second simulation kernel comprises fourth, fifth, and sixth rows which each comprise three coefficients, wherein the three coefficients of the fourth row have values of 0, 2/8, and 0, respectively, wherein the three coefficients of the fifth row have values of 2/8, 0, and 2/8, respectively, and wherein the three coefficients of the sixth row have values of 0, 2/8, and 0, respectively.

7. The method of claim 5 wherein the first plurality of sub-frames comprises a first plurality of error values, wherein the second plurality of sub-frames comprises a second plurality of error values, the method further comprising:

generating the first plurality of sub-frames using the first portion, the first simulation kernel, the second simulation kernel, and the first plurality of error values;

generating the second plurality of sub-frames using the second portion, the first simulation kernel, the second simulation kernel, and the second plurality of error values.

8. The method of claim 1 further comprising:

generating the first plurality of sub-frames using the first portion, the first simulation kernel, and an error kernel; and

generating the second plurality of sub-frames using the second portion, the first simulation kernel, and the error kernel.

9. The method of claim 8 wherein the error kernel comprises first, second, and third rows which each comprise three coefficients, wherein the three coefficients of the first row have values of 0, 0, and 0, respectively, wherein the three coefficients of the second row have values of 0, ¼

, and ¼

, respectively, and wherein the three coefficients of the third row have values of 0, ¼

, and ¼

, respectively.

10. The method of claim 8 wherein the error kernel comprises first, second, and third rows which each comprise three coefficients, wherein the three coefficients of the first row have values of 1/16, 2/16, and 1/16, respectively, wherein the three coefficients of the second row have values of 2/16, 4/16, and 2/16, respectively, and wherein the three coefficients of the third row have values of 1/16, 2/16, and 1/16, respectively.

11. The method of claim 1 wherein the second position is vertically and horizontally offset from the first position, and wherein the fourth position is vertically and horizontally offset from the third position.

12. A system for displaying an image, the system comprising:

a buffer adapted to receive image data for the image, the image data comprising a first portion and a second portion;

an image processing unit configured to generate a first plurality of initial sub-frames using the first portion, generate a second plurality of initial sub-frames using the second portion, generate a first plurality of updated sub-frames using the first plurality of initial sub-frames, and generate a second plurality of updated sub-frames using the second plurality of initial sub-frames; and

a display device adapted to alternately display a first one of the first plurality of updated sub-frames in a first position, display a second one of the first plurality of updated sub-frames in a second position spatially offset from the first position, display a first one of the second plurality of updated sub-frames in a third position spatially offset from the first and the second positions, and display a second one of the second plurality of updated sub-frames in a fourth position spatially offset from the first, the second, and the third positions.

13. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of initial sub-frames using the first portion and a first plurality of zero values, and generate the second plurality of initial sub-frames using the second portion and a second plurality of zero values.

14. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of updated sub-frames using the first plurality of initial sub-frames and an adaptive multi-pass algorithm, and generate the second plurality of updated sub-frames using the second plurality of initial sub-frames and the adaptive multi-pass algorithm.

15. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of updated sub-frames using the first plurality of initial sub-frames and a center adaptive multi-pass algorithm, and generate the second plurality of updated sub-frames using the second plurality of initial sub-frames and the center multi-pass algorithm.

16. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of updated sub-frames using the first plurality of initial sub-frames and an adaptive multi-pass algorithm with history, and generate the second plurality of updated sub-frames using the second plurality of initial sub-frames and the adaptive multi-pass algorithm with history.

17. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of updated sub-frames using the first plurality of initial sub-frames and a center adaptive multi-pass algorithm with history, and generate the second plurality of updated sub-frames using the second plurality of initial sub-frames and the center multi-pass algorithm with history.

18. The system of claim 12 wherein the image processing unit is configured to generate the first plurality of updated sub-frames using the first plurality of initial sub-frames and a plurality of sharpening factors, and generate the second plurality of updated sub-frames using the second plurality of initial sub-frames and the plurality of sharpening factors.

19. A system for displaying an image, the system comprising:

means for receiving image data for the image, the image data comprising a first portion and a second portion;

means for generating a first plurality of sub-frames using the first portion and a first plurality of zero values;

means for generating a second plurality of sub-frames using the second portion and a second plurality of zero values; and

means for alternating between displaying a first one of the first plurality of sub-frames in a first position, displaying a second one of the first plurality of sub-frames in a second position spatially offset from the first position, displaying a first one of the second plurality of sub-frames in a third position spatially offset from the first and the second positions, and displaying a second one of the second plurality of sub-frames in a fourth position spatially offset from the first, the second, and the third positions

20. The system of claim 19 wherein the second position is vertically and horizontally offset from the first position, and wherein the fourth position is vertically and horizontally offset from the third position.

21. The system of claim 19 further comprising:

means for merging the first plurality of sub-frames and the second plurality of sub-frames.

22. The system of claim 19 wherein the means for generating the first plurality of sub-frames includes means for generating the first plurality of sub-frames using a simulation kernel, and wherein the means for generating the second plurality of sub-frames includes means for generating the second plurality of sub-frames using the simulation kernel.

23. The system of claim 22 wherein the means for generating the first plurality of sub-frames includes means for generating the first plurality of sub-frames using an error kernel, and wherein the means for generating the second plurality of sub-frames includes means for generating the second plurality of sub-frames using the error kernel.

24. A computer-readable medium having computer-executable instructions for performing a method of generating a sub-frame image which comprises first and second pluralities of updated sub-frames for display at spatially offset positions to generate the appearance of an image, comprising:

receiving image data corresponding to the image, the image data comprising a first portion and a second portion;

generating a first plurality of initial sub-frames using the first portion and a first plurality of zero values;

generating a second plurality of initial sub-frames using the second portion and a second plurality of zero values;

generating the first plurality of updated sub-frames using the first plurality of initial sub-frames; and

generating the second plurality of updated sub-frames using the second plurality of initial sub-frames.

25. The computer-readable medium of claim 24 having computer-executable instructions for:

merging the first plurality of updated sub-frames and the second plurality of updated sub-frames into the sub-frame image.