Title:
【発明の名称】画像表示方法及び回路
Document Type and Number:
Japanese Patent JP2996881
Kind Code:
B2
Abstract:
The present invention concerns an image display method and an image display circuit for superimposing digital video data on external digital video data. An object of the invention is to provide an image display method and a display circuit through which color bleeding and image flickering are not generated on an image-generated based on the external digital video data when the digital video data is superimposed on the external digital video data. A comparison shift clock whose phase is led from that of a dot clock is generated and external digital video data is latched thereby. A comparison shift clock whose phase is delayed from that of the dot clock is formed and the external digital video data is latched thereby. The respective values latched by the dot clock and the comparison shift clocks are compared with one another. If the respective values do not coincide with one another, external digital video data in which the position of the change point of the data is shifted is generated.
Inventors:
Takuji Matsushiba
Application Number:
JP22938094A
Publication Date:
January 11, 2000
Filing Date:
September 26, 1994
Export Citation:
Assignee:
International Business Machines Corporation
International Classes:
G06T11/60; G09G3/20; G09G3/36; G09G5/00; G09G5/12; H04N5/272; (IPC1-7): G09G5/12; G09G3/36; G09G5/00; H04N5/272
Domestic Patent References:
| JP63268386A | ||||
| JP1126686A | ||||
| JP1128684A |
Attorney, Agent or Firm:
Hiroshi Sakaguchi (1 person outside)