LCD drive method, device and controller based on output image format configuration

An LCD drive device based on output image format configuration, used in LCD projection devices, characterized in that the LCD drive device comprises:

• an acquisition module, configured for acquiring an input signal, the input signal comprises an input image signal and an output image format configuration indication level, and the input signal further comprises an input control clock signal, each input control clock signal period is used for outputting a group of RGB data of a pixel, and one group of RGB data in a line of corresponding color data signal will be synchronously output in each output control clock signal period;
• a processing module, configured for generating and sending an output signal to LCD correspondingly to drive the LCD according to the input image signal and the output image format configuration indication level signal;
• the output signal comprises an output control clock signal, an output vertical synchronization signal, an output horizontal synchronization signal, an output data valid signal, a combination of monochrome image data signals output in time division and an indication level indicating the monochrome image data signal;
• one period of the output vertical synchronization signal synchronously outputs a color period signal, the output vertical synchronization signal indicates that a plurality of different color combinations are output, and the different color combinations are controlled by the output image format configuration indication level signal;
• in each color period signal output, synchronously outputting multiple periods of the output data valid signal, multiple periods of the output horizontal synchronization signal, the corresponding monochrome image data signal and the indication level of the monochrome image data signal;
• the output image format configuration indication level signal comprises a fourth level signal, and when the output image format configuration indication level signal is the fourth level signal, it is an automatic selection mode, and the combination of monochrome image data signals output in time division comprises:
• a) a monochrome image data signal output in time division under condition of triple frequency output of red, green and blue in time division at power-on, b) a first combination of monochrome image data signals output in time division, c) a second combination of monochrome image data signals output in time division and d) a third combination of monochrome image data signals output in time division;
• acquiring, by an external camera, a plurality of driving effect images output in time division correspondingly when the LCD responds to:
• a) the monochrome image data signal output in time division under condition of triple frequency output of red, green and blue, b) the first combination of monochrome image data signals output in time division, c) the second combination of monochrome image data signals output in time division and d) the third combination of monochrome image data signals output in time division;
• comparing the plurality of driving effect images output in time division with an internally stored image data, and selecting an appropriate combination mode of monochrome image data signals output in time division, so as to drive the LCD according to the appropriate combination mode of monochrome image data signals output in time division;
• and
• if the output image format configuration indication level signal is a first level, the first combination of monochrome image data signals output in time division is a case of quadruple output with white frames;
• if the output image format configuration indication level signal is a second level, the second combination of monochrome image data signals output in time division is a case of quadruple output with black frames;
• if the output image format configuration indication level signal is a third level, the third combination of monochrome image data signals output in time division is a case of quintuple output.

A controller, used in LCD projection devices, characterized in that the controller is used for:

• acquiring an input signal, the input signal comprises an input image signal and an output image format configuration indication level, and the input signal further comprises an input control clock signal, each input control clock signal period is used for outputting a group of RGB data of a pixel, and one group of RGB data in a line of corresponding color data signal will be synchronously output in each output control clock signal period;
• generating and sending an output signal to LCD correspondingly according to the input image signal and the output image format configuration indication level signal;
• the output signal comprises an output control clock signal, an output vertical synchronization signal, an output horizontal synchronization signal, an output data valid signal, a combination of monochrome image data signals output in time division and an indication level indicating the monochrome image data signal;
• one period of the output vertical synchronization signal synchronously outputs a color period signal, the output vertical synchronization signal indicates that a plurality of different color combinations are output, and the different color combinations are controlled by the output image format configuration indication level signal;
• in each color period signal output, synchronously outputting multiple periods of the output data valid signal, multiple periods of the output horizontal synchronization signal, the corresponding monochrome image data signal and the indication level of the monochrome image data signal;
• the output image format configuration indication level signal comprises a fourth level signal, and when the output image format configuration indication level signal is the fourth level signal, it is an automatic selection mode, and the combination of monochrome image data signals output in time division comprises:
• a) a monochrome image data signal output in time division under condition of triple frequency output of red, green and blue in time division at power-on, b) a first combination of monochrome image data signals output in time division, c) a second combination of monochrome image data signals output in time division and d) a third combination of monochrome image data signals output in time division;
• acquiring, by an external camera, a plurality of driving effect images output in time division correspondingly when the LCD responds to:
• a) the monochrome image data signal output in time division under condition of triple frequency output of red, green and blue, b) the first combination of monochrome image data signals output in time division, c) the second combination of monochrome image data signals output in time division and d) the third combination of monochrome image data signals output in time division;
• comparing the plurality of driving effect images output in time division with an internally stored image data, and selecting an appropriate combination mode of monochrome image data signals output in time division, so as to drive the LCD according to the appropriate combination mode of monochrome image data signals output in time division;
• and
• if the output image format configuration indication level signal is a first level, the first combination of monochrome image data signals output in time division is a case of quadruple output with white frames;
• if the output image format configuration indication level signal is a second level, the second combination of monochrome image data signals output in time division is a case of quadruple output with black frames;
• if the output image format configuration indication level signal is a third level, the third combination of monochrome image data signals output in time division is a case of quintuple output.