Inset picture centering in a pix-in-pix system

Details Inset picture centering in a pix-in-pix system Inset picture centering in a pix-in-pix system

H - Electricity

04

N

H04N 5/262 (2006.01) H04N 5/272 (2006.01) H04N 5/45 (2006.01)

Patent

CA 2051440

RCA 85, 551 ABSTRACT A PIP system stores data indicative of the location of the center point of an inset picture with respect to a display screen center point in a memory area of a first size. The inset image data is read out of the memory area beginning with the data stored in a memory location known as the "read address". When a ZOOM-IN or ZOOM-OUT command is received, data representing a new video image of a different size is stored for display in an unused memory area of a different size, a new inset center point is computed, and a new read address is computed, so that the displayed centers of the new inset area of a different size, and the old inset area are substantially the same.

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