Title:
METHOD AND DEVICE FOR CONVERTING IMAGE SIGNAL RESOLUTION
Document Type and Number:
Japanese Patent JP3647338
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To convert a digital image signal into a signal having an appropriate resolution that is suitable for a display device by employing only a simple hardware only.
SOLUTION: About digital image signals accompanied by data enable(DE) signals and dot clock(DCLK) signals, the number of clocks of the DCLK signals generated in a period in which the DE signals are made active is counted, the resolution of input image signals is judged based on the number of clocks and the pixel density of the signals is converted based on the resolution so as to form image signals having a resolution suitable for a display device. Note that the resolution of the input image signals can be also judged based on the number of pulses by counting the number of pulses of the DE signals generated in one vertical synchronizing period.
Inventors:
Fukuda Takatoshi
Application Number:
JP32122299A
Publication Date:
May 11, 2005
Filing Date:
November 11, 1999
Export Citation:
Assignee:
富士通株式会社
International Classes:
G09G5/36; G06F3/14; G09G3/20; G09G5/00; G09G5/391; (IPC1-7): G09G5/00; G09G3/20; G09G5/391
Domestic Patent References:
| JP887244A | ||||
| JP200183927A |
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Shigeru Tsuchiya
Masaya Nishiyama
Higuchi Souji
Jun Tsuruta
Shigeru Tsuchiya
Masaya Nishiyama
Higuchi Souji