Tone display method and apparatus therefor

Details Tone display method and apparatus therefor Tone display method and apparatus therefor

H - Electricity

04

N

350/83

H04N 5/57 (2006.01) G09G 3/20 (2006.01) G09G 3/28 (2006.01) H04N 3/12 (2006.01)

Patent

CA 2037269

ABSTRACT OF THE DISCLOSURE In a display device of pictures, etc., an adequate brightness of pictures to be displayed is realized by varying the luminous times of the luminous elements constituting a display panel. The luminous elements receive multiple-bit codes representing levels of brightness from signals to be displayed. Time corre- sponding to a field of television signals is divided into a plurality of sub-field of television signals is divided into a plurality of sub-fields corresponding to the bits of a multiple-bit code. The plurality of sub- fields have lengths of time proportional to weights of the corresponding bits. The luminous elements show different levels of brightness in sub-fields correspond- ing to bits, having values of "1" or "0", of a multiple- bit code. For each luminous element, the time interval from a light emission start time in a sub-field where the first light emission occurs in a time corresponding to a field till a light emission start time in a sub- field where the last light emission occurs in a time corresponding to a field is made shorter than the critical fusion period of the perception characteristic of human eyes.

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