Title:
表示装置
Document Type and Number:
Japanese Patent JP4236422
Kind Code:
B2
Abstract:
A display device such as a PDP that can prevent thermal destruction or screen burn-in caused by display patterns. In this device, the display luminance is determined by the number of light emissions, and there are provided a sustain frequency control section (26) that controls the sustain frequency, a load ratio calculation section (22) that calculates the load ratio for each frame of display data, plural counters (32-1...32-N), a load ratio counter control section (31) that controls so as to increase the counts of the counters corresponding to the load ratio level calculated by the load ratio calculation section (22), and a first judgment section (33) that outputs a first control signal when any of the counts exceeds a first reference value, wherein the sustain frequency control section (26) decreases the sustain frequency according to the first control signal.
Inventors:
Makoto Onozawa
Taiji Noguchi
Fumito Kojima
Hideaki Koki
Taiji Noguchi
Fumito Kojima
Hideaki Koki
Application Number:
JP2002204688A
Publication Date:
March 11, 2009
Filing Date:
July 12, 2002
Export Citation:
Assignee:
Hitachi Plasma Display Co., Ltd.
International Classes:
H04N5/66; G09G3/20; G09G3/28; G09G3/288; G09G3/291; G09G3/298
Domestic Patent References:
| JP8063124A | ||||
| JP9034403A | ||||
| JP9034404A | ||||
| JP2000010522A | ||||
| JP2001013914A | ||||
| JP2001067041A | ||||
| JP2002162932A |
Attorney, Agent or Firm:
Yamato Tsutsui