Patent ID: 6025884
Filing Date: 2000-02-15
Classification: H04N

Abstract:
A display monitor apparatus having a predetermined main screen resolution and a predetermined picture-in-picture screen resolution, said apparatus comprising:a composite input circuit for receiving a composite television signal, separating first horizontal and vertical synchronizing signals and luminance and chrominance video signals from said received composite television signal, and transforming said separated luminance and chrominance video signals into first analog R, G and B video signals;a timing control circuit for performing timing control in response to said first horizontal and vertical synchronizing signals and in further response to second horizontal and vertical synchronizing signals, wherein said timing control circuit receives said second horizontal and vertical synchronizing signals from a computer;a first video processing circuit for converting said first analog R, G and B video signals into second analog R, G and B video signals suitable for one of said predetermined main screen resolution and said predetermined picture-in-picture screen resolution in accordance with said timing control of said timing control circuit to display a first image on a display means; anda second video processing circuit for converting third analog R, G and B video signals supplied from said computer into fourth analog R, G and B video signals suitable for a different one of said predetermined main screen resolution and said predetermined picture-in-picture screen resolution in accordance with said timing control of said timing control circuit to display a second image simultaneously with said first image.