| 摘要 |
First and second gradation bit groups are obtained by dividing m (4<=m<n) gradation bits from the most significant bit into two halves so as to make weights thereof half where n is a total number of gradation bits. Then, a plurality of sub-fields in the first and second gradation bit groups is arranged to be equal to each other. Subsequently, at least part of sub-fields of (n-m) non-divided gradation bits among the n gradation bits are arranged in between the first and second gradation bit groups. A time interval between the first and second gradation bit groups is thereby determined to be h/2±h/14 (msec), where h (msec) is time of one field of a video signal to be displayed.
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