Patent ID: 6903781

Claim:
A video signal processing apparatus comprising: a sub-screen processing integrated circuit for receiving a video signal for a sub-screen, and subjecting the sub-screen video signal to scale-down processing to reduce its display region and output the scaled-down sub-screen video signal; and a main-screen processing integrated circuit including: a switching means for receiving a video signal for a main-screen and the scaled-down sub-screen video signal which is outputted from the sub-screen processing integrated circuit, and selecting the main-screen video signal for a main-screen display region while selecting the scaled-down sub-screen video signal for a sub-screen display region; an analog-to-digital conversion means for converting the video signal which is outputted from the switching means into a digital video signal; a digital signal processing means for digitally processing the digital video signal which is outputted from the analog-to-digital conversion means; and a digital-to-analog conversion means for converting the digitally-processed video signal into an analog video signal.