| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a video signal processing apparatus capable of obtaining video images of superior image quality. <P>SOLUTION: The video signal processing apparatus includes: a clamp circuit 72 for clamping a value which is offset from a video signal, based on a first reference value Ref1 in a black level period, and clamping the video signal, based on a second reference value Ref2 being different from the first reference value Ref1, in an effective signal period, concerning the video signal having the black level period, which indicates a horizontal synchronous signal and a black level by one horizontal line, and the effective signal period; and a level operational circuit 62 for obtaining the second reference value Ref2, based on the signal level clamped in the black level period. <P>COPYRIGHT: (C)2008,JPO&INPIT |
