公开(公告)号：WO02059685A2

公开(公告)日：2002-08-01

申请号：PCT/US0149538

申请日：2001-12-20

Applicant: IBM

Inventor： GREIER PAUL F ,  HO KENNETH C ,  KAUFMAN RICHARD I ,  MILLMAN STEVEN E ,  THOMPSON GERHARD R ,  WRIGHT STEVEN L ,  WU CHAI W

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G02F

CPC classification number: G09G3/3611 ,  G09G3/2051 ,  G09G3/3614 ,  G09G5/006 ,  G09G2300/0443 ,  G09G2300/0447 ,  G09G2320/0276 ,  G09G2320/028

Abstract: Viewing angle characteristics of a liquid crystal display (LCD) (112) are improved by reducing the number of subpixels in an image with mid-tone luminance values. In a preferred embodiment, a first table of entries associating subpixel intensity values and subpixel luminance values for a LCD in at least one viewing angle direction is provided. A target intensity value is determined from the first table, corresponding to the average subpixel luminance over a small number of adjacent subpixels. A second table of entries associates the target intensity values with intensity values above and below the target. The adjacent subpixel intensity values are modified according to the second table, thereby reducing the number of subpixels with mid-tone luminance values. The subpixel data is preferably processed within a portion of an application-specific integrated circuit (ASIC) (303), contained within the display module (112-2).

Abstract translation: 通过用中间色调亮度值减少图像中的子像素的数量来改善液晶显示器（LCD）（112）的视角特性。 在优选实施例中，提供了将至少一个视角方向上的LCD的子像素强度值和子像素亮度值相关联的条目的第一表。 从第一表确定对应于少数相邻子像素上的平均子像素亮度的目标强度值。 第二个条目表将目标强度值与目标上方和下方的强度值相关联。 根据第二表修改相邻的子像素强度值，从而减少具有中间色调亮度值的子像素的数量。 子像素数据优选地在包含在显示模块（112-2）内的专用集成电路（ASIC）（303）的一部分内进行处理。

公开(公告)号：AU2002231163A1

公开(公告)日：2002-08-06

申请号：AU2002231163

申请日：2001-12-20

Applicant: IBM

Inventor： HO KENNETH C ,  WU CHAI W ,  THOMPSON GERHARD R ,  KAUFMAN RICHARD I ,  WRIGHT STEVEN L ,  MILLMAN STEVEN E ,  GREIER PAUL F

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G06T15/00

Abstract: Viewing angle characteristics of a liquid crystal display (LCD) are improved by reducing the number of subpixels in an image with mid-tone luminance values. In a preferred embodiment, a first table of entries associating subpixel intensity values and subpixel luminance values for a LCD in at least one viewing angle direction is provided. A target intensity value is determined from the first table, corresponding to the average subpixel luminance over a small number of adjacent subpixels. A second table of entries associates the target intensity values with intensity values above and below the target. The adjacent subpixel intensity values are modified according to the second table, thereby reducing the number of subpixels with mid-tone luminance values. The subpixel data is preferably processed within a portion of an application-specific integrated circuit (ASIC), contained within the display module.

公开(公告)号：GB2348585B

公开(公告)日：2003-12-24

申请号：GB0000704

申请日：2000-01-14

Applicant: IBM

Inventor： JAMESON DAVID H ,  TRESSER CHARLES PHILIPPE LOUIS ,  WU CHAI W ,  ABRAMS STEVEN R ,  WINOGRAD SHMUEL

IPC: G06F1/00 ,  G06F11/00 ,  G09C1/00 ,  G06F11/10 ,  G06F12/14 ,  G06F21/00 ,  G06F21/24 ,  G06T1/00 ,  G11B20/00 ,  G11B20/18 ,  H03M13/01 ,  H04L9/30 ,  H04N1/32 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081 ,  H04L9/32

Abstract: A watermark in the form of an added message is attached to a digital recording so that a significant content of the recording is completely unchanged by the process in the sense that any reader commonly used for such recording will extract from the recording exactly what would have been extracted in the case the added message had not been attached. This is done by hiding the added message in the error correcting code (ECC) for the significant content of the recording.

公开(公告)号：GB2387955B

公开(公告)日：2004-10-06

申请号：GB0318620

申请日：2001-12-20

Applicant: IBM

Inventor： GREIER PAUL F ,  HO KENNETH C ,  KAUFMAN RICHARD I ,  MILLMAN STEVEN E ,  THOMPSON GERHARD R ,  WRIGHT STEVEN L ,  WU CHAI W

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00

Abstract: Viewing angle characteristics of a liquid crystal display (LCD) are improved by reducing the number of subpixels in an image with mid-tone luminance values. In a preferred embodiment, a first table of entries associating subpixel intensity values and subpixel luminance values for a LCD in at least one viewing angle direction is provided. A target intensity value is determined from the first table, corresponding to the average subpixel luminance over a small number of adjacent subpixels. A second table of entries associates the target intensity values with intensity values above and below the target. The adjacent subpixel intensity values are modified according to the second table, thereby reducing the number of subpixels with mid-tone luminance values. The subpixel data is preferably processed within a portion of an application-specific integrated circuit (ASIC), contained within the display module.

公开(公告)号：GB2387955A

公开(公告)日：2003-10-29

申请号：GB0318620

申请日：2001-12-20

Applicant: IBM

Inventor： GREIER PAUL F ,  HO KENNETH C ,  KAUFMAN RICHARD I ,  MILLMAN STEVEN E ,  THOMPSON GERHARD R ,  WRIGHT STEVEN L ,  WU CHAI W

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00

Abstract: Viewing angle characteristics of a liquid crystal display (LCD) (112) are improved by reducing the number of subpixels in an image with mid-tone luminance values. In a preferred embodiment, a first table of entries associating subpixel intensity values and subpixel luminance values for a LCD (112) in at least one viewing angle direction is provided. A second table associates the target intensity values with values above and below the target. The adjacent subpixel intensity values are modified according to the second table, thereby reducing the number of subpixels with mid-tone luminance values.

公开(公告)号：GB2348585A

公开(公告)日：2000-10-04

申请号：GB0000704

申请日：2000-01-14

Applicant: IBM

Inventor： JAMESON DAVID H ,  TRESSER CHARLES PHILIPPE LOUIS ,  WU CHAI W ,  ABRAMS STEVEN R ,  WINOGRAD SHMUEL

IPC: G06F1/00 ,  G06F11/00 ,  G09C1/00 ,  G06F11/10 ,  G06F12/14 ,  G06F21/00 ,  G06F21/24 ,  G06T1/00 ,  G11B20/00 ,  G11B20/18 ,  H03M13/01 ,  H04L9/30 ,  H04N1/32 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081 ,  H04L9/32

Abstract: A watermark in the form of an added message is attached to a digital recording so that a significant content of the recording is completely unchanged by the process in the sense that any reader commonly used for such recording will extract from the recording exactly what would have been extracted in the case the added message had not been attached. This is done by hiding the added message in the error correcting code (ECC) for the significant content of the recording.