Patent ID: 7825989

Claim:
A television system, comprising: a receiver for receiving an analog image data signal from a source and converting the analog image data signal into first and second digital video signals corresponding to first and second channels, respectively; a controller for manipulating the first and second digital video signals, the controller comprising: first and second ports for receiving, respectively, the first and second digital video signals from the receiver; a frame memory for storing data pixels from the first and second digital video signals; and a memory interface for controlling the frame memory, the memory interface comprising a picture-in-picture (PIP) source register (PIPSRC), a PIP enable register (PIPEN), a top line register (PIPT), a horizontal line register (PIPH), a left edge register (PIPL), and a width register (PIPW); and a panel for receiving the data pixels from the controller, wherein the panel comprises: a primary screen to display data pixels from the first video signal; and a secondary screen within the primary screen to display data pixels from the second video signal, wherein the PIPT indicates a location of a top line of the secondary screen, the PIPH indicates a number of horizontal lines within the secondary screen, the PIPL defines a left edge of the secondary screen, and the PIPW defines a width of the secondary screen.