Patent ID: 7697817

Claim:
A picture processing apparatus for processing picture signals of different formats that include a first format and a second format, comprising: ex-area adding means for adding ex-areas around the area indicated by the input picture signals; storage means for storing input picture signals in a memory; read-out means for simultaneously reading out said picture signals stored in said memory in terms of a preset number of the picture signals as a unit; interpolation means for interpolating picture signals for a preset position by executing preset calculations on the plural picture signals read out by said readout means from said memory; and control means for controlling the operating frequency and the number of times of operations of said readout means and said interpolation means in keeping with the formats of the input picture signals, wherein a 4-point interpolation processing is executed for the picture signals of a high-definition (“HD”) format and a 16-point interpolation processing is executed for the picture signals of a standard definition (“SD”) format, respectively, wherein a number of pixels of the ex-areas are determined by a number of pixels used by the interpolation means, wherein the interpolation means implements an interpolating process independent of a location of the preset position, and wherein the added ex-area adds one or more dummy pixels adjacent to an edge pixel so that when the preset position is at an edge of the area defined by the picture signals, the interpolation means implements the same interpolation process, the one or more dummy pixels being disposed outside the area defined by the picture pixels and generating a black area.