TONE DISPLAY METHOD AND APPARATUS THEREFOR

摘要

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 (30; Fig. 40) constituting a display panel (3). The luminous elements receive multiple-bit codes representing levels of brightness from signals to be displayed. Time corresponding 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 corresponding to bits, having values of "1" or "0", of a multiple-bit code. For each luminous element, the time interval (Tm) 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.