| 摘要 |
PURPOSE: To stop the generation of pulses for driving PDP for sub-fields where the number of display pixels is entirely none or is very little with respect to the generation of the pulses for driving the same. CONSTITUTION: This pulse generation controller is composed of an A/D conversion section 1a for converting respective video signals of RGB into digital signals of a prescribed number of bits, a decoder 1b, etc., for decoding 01H to FFH data (hexadecimal) from the digital signals, a counter 1f, etc., for counting the number of decoded data by resetting at every one frame, a selector 1j for successively changing over counter outputs, an arithmetic section 4 for calculating the total sum of the number of the decoded data with each bit from the lowermost to the uppermost bit of digital signals from the respective counter outputs from the selector according to prescribed procedures, a memory section 5 storing criteria, a discriminating section 6 for discriminating the results of the calculation and a control section 7 for stopping the generation of driving pulses to the corresponding sub-fields for the bits lower in the total number of the decoded bits than the prescribed number.
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