Signal processing unit and liquid crystal display device

A real-time system signal processing unit in a liquid crystal display device, to which a video signal is input and through which an image is displayed on a liquid crystal panel, comprising:

• a brightness component appearance frequency measuring unit of one frame that measures an appearance frequency of each brightness component for every frame in the video signal,
• a parameter outputting unit of one frame that successively outputs a distribution of each brightness component of each frame in the video signal, as a plurality of one frame parameters, based on said appearance frequency of each frame measured by the brightness component appearance frequency measuring unit of one frame;
• a changing signal outputting unit of one frame that successively alters input signals recorded in a recording unit, by using said plurality of one frame parameters output from the parameter outputting unit of one frame, and that successively outputs said input signals as a changing signal for one frame;
• and
• a brightness component changing unit in a real-time system that successively changes a distribution of each brightness component of each frame in the video signal, by using the change signal for one frame which is successively output from the changing signal outputting unit of one frame, and that successively outputs the video signal in which the distribution of each brightness component is changed.

A signal processing unit in a liquid crystal display device, to which a video signal is input and through which an image is displayed on a liquid crystal panel, comprising:

• a brightness component appearance frequency measuring unit that measures an appearance frequency of each brightness component in the video signal;
• a successive parameter outputting unit that successively outputs a distribution of each brightness component in the video signal, as a plurality of successive parameters, based on said appearance frequency measured by the brightness component appearance frequency measuring unit;
• a serial parameter outputting unit, to which each of said plurality of successive parameters successively output from the successive parameter outputting unit is successively input, and which outputs values linearly changing between respective parameters successively input from the successive parameter outputting unit, as a plurality of serial parameters;
• a changing signal outputting unit that alters input signals recorded in a recording unit, by using said plurality of serial parameters output from the serial parameter outputting unit, and that outputs as a changing signal;
• and
• a brightness component changing unit that changes a distribution of each brightness component in the video signal, by using the changing signal which is output from the changing signal outputting unit, and that outputs the video signal in which the distribution of each brightness component is changed.