Generating and Displaying Spatially Offset Sub-Frames on a Diamond Grid

• US 20070296742A1
• Filed: 08/28/2007
• Published: 12/27/2007
• Est. Priority Date: 10/30/2003
• Status: Abandoned Application

• Current Assignee: Niranjan Damera-Venkata
• Original Assignee: Niranjan Damera-Venkata
• Inventors: Damera-Venkata, Niranjan
• Application Number:
  US11/846,291
• Publication Number:
  US 20070296742A1
• Time in Patent Office: Days
• US Class Current: 345/698
• CPC Class Codes: G09G 5/391 Resolution modifying circuits, e.g. variable screen formats

Abstract

A method of displaying an image with a display device includes receiving image data for the image on a diamond grid. The method includes generating a first sub-frame and a second sub-frame corresponding to the image data, the first and the second sub-frames each generated on a diamond grid. The method includes alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.

Claims

1-30. -30. (canceled)

31. One or more microprocessors capable of performing a sequence of logic operations, the logic operations comprising:

receiving image data for the image on a high resolution grid;

generating a first sub-frame and a second sub-frame corresponding to the image data, the first and the second sub-frames each generated on a low resolution diamond grid; and

alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.

32. The one or more microprocessors of claim 31, wherein the high resolution grid is a rectangular grid.

33. The one or more microprocessors of claim 32, further comprising transforming the rectangular grid to a high resolution diamond grid.

34. The one or more microprocessors of claim 31, wherein the first sub-frame and the second sub-frame are displayed on a low resolution quincunx display that includes diamond-shaped pixels.

35. The one or more microprocessors of claim 34, wherein the displayed first sub-frame and the displayed second sub-frame are shifted relative to each other in quick succession using two-position processing to create a human visual system higher resolution image.

36. The one or more microprocessors of claim 31, wherein the first sub-frame and the second sub-frame are generated based on a nearest neighbor algorithm from the high resolution grid.

37. The one or more microprocessors of claim 31, wherein the first sub-frame and the second sub-frame are generated based on a bilinear algorithm from the high-resolution grid.

38. The one or more microprocessors of claim 31 wherein the high resolution grid is a diamond grid.

39. The one or more microprocessors of claim 38, further comprising transforming the image data to a rectangular grid.

40. The one or more microprocessors of claim 39, wherein the image data is transformed to a rectangular grid by rotating the image data by forty-five degrees.

41. The one or more microprocessors of claim 39, further comprising padding the transformed image data with pixels having a value of zero, thereby forming a rectangular-shaped image on the rectangular grid.

42. The one or more microprocessors of claim 41 wherein the first sub-frame and the second sub-frame are generated based on minimization of an error between the rectangular-shaped image and a simulated image.

43. The one or more microprocessors of claim 42, wherein the first sub-frame and the second sub-frame are first generated on a rectangular grid and then transformed to a diamond grid for display.

44. The one or more microprocessors of claim 31, wherein the first sub-frame and the second sub-frame are generated based on minimization of an error between the image data and a simulated image.

45. The one or more microprocessors of claim 44, wherein the simulated image is based on upsampling of the first and the second sub-frames, thereby generating upsampled sub-frame data.

46. The one or more microprocessors of claim 45, wherein the upsampled sub-frame data includes first and second upsampled sub-frames, and wherein the simulated image is based on shifting of pixels in the first upsampled sub-frame, thereby generating a first shifted sub-frame, and wherein the simulated image is based on convolutions of the first shifted sub-frame and the second upsampled sub-frame with an interpolating filter.

47. The one or more microprocessors of claim 45, wherein the simulated image is based on a convolution of the upsampled sub-frame data with an interpolating filter.

48. The one or more microprocessors of claim 31, and further comprising:

generating a third sub-frame and a fourth sub-frame corresponding to the image data, the third and the fourth sub-frames each generated on a low resolution diamond grid; and

wherein alternating between displaying the first sub-frame and displaying the second sub-frame further includes alternating between displaying the first sub-frame in the first position, displaying the second sub-frame in the second position, displaying the third sub-frame in a third position spatially offset from the first position and the second position, and displaying the fourth sub-frame in a fourth position spatially offset from the first position, the second position, and the third position.

49. A set of components, comprising:

a display device having a low resolution diamond grid coupled to an image shifter;

a buffer adapted to receive image data for the image on a high resolution grid;

an image processing unit configured to define first and second sub-frames corresponding to the image data, the first and the second sub-frames each defined on the low resolution diamond grid; and

a set of logic adapted to control the image shifter to alternately display the first sub-frame in a first position and the second sub-frame in a second position spatially offset from the first position.

50. The set of components of claim 49, wherein the high resolution grid is a rectangular grid.

51. The set of components of claim 50, further comprising transforming the rectangular grid to a high resolution diamond grid.

52. The set of components of claim 49, wherein the first sub-frame and the second sub-frame are generated based on a nearest neighbor algorithm from the high resolution grid.

53. The set of components of claim 49, the display device is a low resolution quincunx display that includes diamond-shaped pixels.

54. The set of components of claim 53, wherein the displayed first sub-frame and the displayed second sub-frame are generated to be shifted relative to each other in quick succession using two-position processing to create a human visual system higher resolution image.

55. The set of components of claim 49, wherein the high resolution grid is a diamond grid.

56. The set of components of claim 55, wherein the image processing unit is configured to transform the image data to a rectangular grid.

57. The set of components of claim 56, wherein the image processing unit is configured to transform the image data to a rectangular grid by rotating the image data by forty-five degrees.

58. The set of components of claim 56, wherein the image processing unit is configured to pad the transformed image data with pixels having a value of zero, thereby forming a rectangular-shaped image on the rectangular grid.

59. The set of components of claim 58, wherein the image processing unit is configured to define the first sub-frame and the second sub-frame based on minimization of an error between the rectangular-shaped image and a simulated image.

60. The set of components of claim 59, wherein the first sub-frame and the second sub-frame are first defined on a rectangular grid and then transformed to a diamond grid for display.

61. The set of components of claim 49, wherein the first sub-frame and the second sub-frame are generated based on a bilinear algorithm from the high-resolution grid.

62. The set of components of claim 49, wherein the image processing unit is configured to define the first and the second sub-frames based on minimization of an error between the image data and a simulated image.

63. The set of components of claim 62, wherein the simulated image is based on upsampling of the first and the second sub-frames.

64. The set of components of claim 63, wherein the simulated image is based on shifting of pixels in the upsampled first sub-frame, thereby generating a first shifted sub-frame, and convolutions of the first shifted sub-frame and the upsampled second sub-frame with an interpolating filter.

65. The set of components of claim 63, wherein the simulated image is based on a convolution of the upsampled first and second sub-frames with an interpolating filter.

66. The set of components of claim 49, wherein the image processing unit is configured to define a third sub-frame and a fourth sub-frame corresponding to the image data, the third and the fourth sub-frames defined on a low resolution diamond grid;

and

wherein the set of logic is adapted to control the image shifter to alternate between displaying the first sub-frame in the first position, displaying the second sub-frame in the second position, displaying the third sub-frame in a third position spatially offset from the first position and the second position, and displaying the fourth sub-frame in a fourth position spatially offset from the first position, the second position, and the third position.

67. A set of components to control a display device coupled to an image shifter, comprising:

a plurality of pixels on a low resolution diamond grid on the display device;

a frame buffer configured to accept high resolution image data and to hold a high resolution image frame;

a sub-frame generation unit configured to accept the high resolution image frame from the frame buffer and to create a plurality of low resolution image sub-frames each spatially offset from each other and to be displayed on the low resolution diamond grid;

a set of logic configured to control the image shifter; and

a timing generator configured to synchronize the frame buffer, the sub-frame generation unit, and the set of logic to control the image shifter to optically steer the plurality of image sub-frames by the display device.

68. The set of components of claim 67, wherein the high resolution grid is a rectangular grid.

69. The set of components of claim 68, further comprising transforming the rectangular grid to a high resolution diamond grid.

70. The set of components of claim 67, wherein the first sub-frame and the second sub-frame are generated based on a nearest neighbor algorithm from the high resolution grid.

71. The set of components of claim 67, the display device is a low resolution quincunx display that includes diamond-shaped pixels.

72. The set of components of claim 71, wherein the displayed first sub-frame and the displayed second sub-frame are generated to be shifted relative to each other in quick succession using two-position processing to create a human visual system higher resolution image.

73. The set of components of claim 67, wherein the high resolution grid is a diamond grid.

74. The set of components of claim 73, wherein the image processing unit is configured to transform the image data to a rectangular grid.

75. The set of components of claim 67, wherein the first sub-frame and the second sub-frame are generated based on a bilinear algorithm from the high-resolution grid.

76. The set of components of claim 67, wherein the image processing unit is configured to define the first and the second sub-frames based on minimization of an error between the image data and a simulated image.

77. The set of components of claim 76, wherein the simulated image is based on upsampling of the first and the second sub-frames.

78. The set of components of claim 77, wherein the simulated image is based on shifting of pixels in the upsampled first sub-frame, thereby generating a first shifted sub-frame, and convolutions of the first shifted sub-frame and the upsampled second sub-frame with an interpolating filter.

79. The set of components of claim 77, wherein the simulated image is based on a convolution of the upsampled first and second sub-frames with an interpolating filter.

80. The set of components of claim 67, wherein the image processing unit is configured to define a third sub-frame and a fourth sub-frame corresponding to the image data, the third and the fourth sub-frames defined on a low resolution diamond grid;

and

wherein the set of logic is adapted to control the image shifter to alternate between displaying the first sub-frame in the first position, displaying the second sub-frame in the second position, displaying the third sub-frame in a third position spatially offset from the first position and the second position, and displaying the fourth sub-frame in a fourth position spatially offset from the first position, the second position, and the third position.