| 摘要 |
PURPOSE: To provide a circuit in which the arithmetic process in horizontal error diffusion processing is improved in error diffusion processing to allow the data processing at high frequency. CONSTITUTION: In a circuit for adding a horizontal reproduced error to an input video signal by a horizontal adding circuit 32 to provide a diffused output signal, converting the diffused output signal into a signal having a bit smaller than the input bit, and outputting it to a display panel, an overflow/underflow detecting circuit 44 is connected in parallel to the horizontal adding circuit 32, so that overflow/underflow can be directly judged in an overflow/underflow processing circuit 43 from the input data and the error data. |
