H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/36
H04N 7/01 (2006.01) G09G 5/14 (2006.01) G09G 5/391 (2006.01) G09G 5/393 (2006.01) H04N 9/64 (2006.01)
Patent
CA 2030941
An apparatus and method for converting a video signal from a first scan rate to a second scan rate so as to be displayed on a monitor is disclosed. A video image is first converted to digital data form, and then the digital data is provided to a pixel buffer. The digital video data is written into the pixel buffer via control lines at a rate that is synchronous with the incoming video data. A control sequences controls the filling the pixel buffer with the video signal. The control sequences also controls the rate at which the data is read out of the pixel buffer. A host processor can at any time change the screen position of the converted video signal by loading a different start address into an address generator. The host can also start and stop the conversion as well as dynamically scale the window size of the converted video image. The frame buffer provides the converted video signal to a monitor and/or to a digital memory device such as conventionally provided in a computer.
Maietta Michael
Smith David M.
Pinnacle Systems Inc.
Smart & Biggar
LandOfFree
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