Abstract: An apparatus and method for simulating a partially turned page on a video screen using a combination of linear and nonlinear picture partitioning. Multiple variable boundary lines are defined for separating areas on the television screen in which different video signals are displayed representative of the front and back sides of a partially turned page. Circuitry is provided for switching between the video signal for the page being turned and a single-color signal depicting the back of the page being turned, as well as for selecting between a video signal for the page being turned and a video signal for the page being revealed. Additional circuitry is provided for simulating a warp in an image on a page due to the page being turned.

Abstract: A bidimensional noise reduction system for processing a television video signal includes a vertical dimension noise reduction system having a first adjustable threshold coring circuit and a horizontal noise reduction system having a second adjustable threshold coring circuit.