Title:
MATRIX DRIVING DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPS6486785
Kind Code:
A
Abstract:
PURPOSE:To prevent color slippage from being generated in the image of teletext, etc., by selecting a means to perform separate sampling at every red, green, and blue in case of displaying the image of the teletext, etc., and selecting a means to perform the simultaneous sampling of the red, the green, and the blue in case of displaying the image of a reception wave. CONSTITUTION:In case of displaying the image of television broadcast, control signals AV and YS, and a control signal CONT go to 'L' levels, and the movable contacts of switches 261, 262, and 263 are connected to L terminals. Therefore, clocks SK1, SK2, and SK3 are supplied to each shift register as shift clocks, and a triaxial video signal is separately sampled, and the image with high resolution can be obtained. In case of displaying the image of a teletext system, etc., the signals AV, YS, and CONT go to 'H' levels, and the movable contacts of the switches 261, 262, and 263 are connected to an H terminals. Therefore, the OR output of the clocks SK1 and SK2 is supplied to each shift register as the shift clocks, and the triaxial video signal is sampled simultaneously, then, high picture quality without generating the color slippage can be obtained.
Inventors:
SAKAMOTO TSUTOMU
Application Number:
JP24545387A
Publication Date:
March 31, 1989
Filing Date:
September 29, 1987
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H04N9/30; H04N9/12; (IPC1-7): H04N9/12
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)