Title:
MEDIUM TONE DISPLAY METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP3113568
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the observed image quality of a moving image by selecting divided light emitting element groups so as to be lighted with not-lighted light emitting element group timewise inbetween thereby preventing occurrence of an abnormal image.
SOLUTION: After an input signal A/D-converted by an A/D converter section 1 is subject to signal processing such as gamma correction by a digital signal processing section 2, the processed signal is stored in a field memory 3 as image data. The signals from the field memory 3 are read in the display order on a display panel 8, a data conversion section 4 converts the signals into data in compliance with the display method and the resulting data are fed to a display panel drive section 5. In this case, a time of lighting from a head of a first light emitting element group till a head of a last light emitting element group is not in excess of a half of one field, and in order to display a medium tone, one or plural light emitting element groups are lighted in the order of a light emitting element group having a weight of a highest tone while being divided into two so as to have almost the same weight in a way that the divided light emitting element groups have not-lighted light emitting element groups inbetween timewise.
Inventors:
Toshihiro Yamamoto
Koichi Yamaguchi
Taiichiro Kurita
Keiji Ishii
Yoshimichi Takano
Keizo Mashima
Sozo Koura
Koichi Yamaguchi
Taiichiro Kurita
Keiji Ishii
Yoshimichi Takano
Keizo Mashima
Sozo Koura
Application Number:
JP33339195A
Publication Date:
December 04, 2000
Filing Date:
December 21, 1995
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
H04N5/66; G09G3/20; G09G3/28; G09G3/296; (IPC1-7): H04N5/66
Attorney, Agent or Firm:
Akihide Sugimura (4 outside)