| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size of the device while suppressing power consumption by controlling power consumption based on obtained specific average power consumption. SOLUTION: An RGB separating and extracting circuit 1 separates and extracts respective red, green and blue component signals R, G and B from inputted analog video signals and supplies the signals to an A/D converting circuit 2. A panel power consumption measuring circuit 4 obtains an average value of the power consumed by each discharging cell of a PDP 10 based on pixel data DR, DG and DB equivalent to one field being supplied from the circuit 2 by adding the value equivalent to the power consumed during a non-light emitting period to an average luminance level of the inputted video signals. The obtained value is defined as an average consumed electric power P and supplied to a luminance adjusting circuit 3. In the circuit 3, the pixel data DR, DG and DB are multiplied by a luminance adjustment coefficient corresponding to the power P and the obtained values are supplied to a frame memory 5 as luminance adjusted pixel data, respectively. |
