Patent ID: 7197194

Claim:
An apparatus for variably scaling video picture signals comprising: a first circuit configured to generate one or more data signals vertically scaled to a first value in response to (i) said video picture signals and (ii) one or more first control signals; a second circuit configured to generate one or more output signals horizontally scaled to a second value in response to (i) said one or more data signals and (ii) said one or more first control signals, wherein said first value and said second value are independently selectable; and an address generator circuit configured to generate said one or more first control signals, wherein said address generator circuit comprises a finite state machine configured to allow multiple luma picture requests and multiple chroma picture requests to follow in sequence and said finite state machine provides (i) an idle after chroma state configured to move to a chroma state in response to said multiple chroma picture requests and (ii) an idle after luma state configured to move to a luma state in response to said multiple luma picture requests.