公开(公告)号：US20020008706A1

公开(公告)日：2002-01-24

申请号：US09725416

申请日：2000-11-29

Applicant: U.S. PHILIPS CORPORATION

Inventor： Age Jochem Van Dalfsen ,  Marinus Van Splunter

IPC: G09G005/02

CPC classification number: G09G3/2059 ,  G09G3/2029 ,  G09G3/2051 ,  G09G3/2803 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/0271 ,  G09G2320/0276 ,  H04N5/66 ,  H04N5/70

Abstract: A display device (506) is driven in a number of sub-fields. Each of the sub-fields is for outputting a respective illumination level by the display device. In each sub-field, a pixel of the displayed image may emit an amount of light corresponding to the particular sub-field, depending on whether it is switched on or not. A required intensity level of the pixel is realized by selecting an appropriate combination of sub-fields in which the pixel is switched on. According to the invention, a selection is made from the possible intensity levels that can be generated by all possible combinations of sub-fields. The selected intensity levels are uniformly spaced on a perceptual scale, allowing a relatively small number of intensity levels for displaying an image with a relatively high perceived quality. The image display unit (300) has a means (306) that is arranged to store the combinations of sub-fields for the respective selected intensity levels.

Abstract translation: 在多个子场中驱动显示装置（506）。 每个子场用于通过显示装置输出各自的照明水平。 在每个子场中，显示图像的像素可以根据是否被接通而发射对应于特定子场的光量。 通过选择像素被接通的子场的适当组合来实现像素的所需强度水平。 根据本发明，从可能由子场的所有可能组合产生的可能的强度水平进行选择。 所选择的强度级别以感知尺度均匀地间隔开，允许相对较少数量的强度级别来显示具有相对较高感知质量的图像。 图像显示单元（300）具有一个装置（306），该装置被设置成存储用于各个所选强度水平的子场的组合。

公开(公告)号：US20010005186A1

公开(公告)日：2001-06-28

申请号：US09725409

申请日：2000-11-29

Applicant: U.S. PHILIPS CORPORATION.

Inventor： Age Jochem Van Dalfsen ,  Marinus Van Splunter

IPC: G09G003/28

CPC classification number: G09G3/2022 ,  G09G3/2029 ,  G09G3/2059 ,  G09G2320/0261 ,  G09G2320/0266

Abstract: A display device (506) is driven in a number of sub-fields. Each of the sub-fields is for outputting a respective illumination level by the display device. In each sub-field, a pixel of the displayed image may emit an amount of light corresponding to the particular sub-field, depending on whether it is switched on or not. A required intensity level of the pixel is realized by selecting an appropriate combination of sub-fields in which the pixel is switched on. According to the invention, a selection is made from the possible intensity levels that can be generated by all possible combinations of sub-fields. This selection contains those intensity levels that can be generated by sub-fields that are temporally close together, thus causing that the light of a pixel is emitted during a relatively short period. The image display unit (300) has a means (306) that is arranged to store the combinations of sub-fields for the respective selected intensity levels.

Abstract translation: 在多个子场中驱动显示装置（506）。 每个子场用于通过显示装置输出各自的照明水平。 在每个子场中，显示图像的像素可以根据是否被接通而发射对应于特定子场的光量。 通过选择像素被接通的子场的适当组合来实现像素的所需强度水平。 根据本发明，从可能由子场的所有可能组合产生的可能的强度水平进行选择。 该选择包含可以由时间上靠近在一起的子场产生的那些强度水平，从而导致像素的光在较短时间内发射。 图像显示单元（300）具有一个装置（306），该装置被设置成存储用于各个所选强度水平的子场的组合。