VIDEO SIGNAL PROCESSING APPARATUS AND METHOD

摘要

A first RGB converter is configured to convert a luminance signal and a color difference signal of a first frame signal to a first RGB signal. The first frame signal is a current frame having a first number of bits. A second RGB converter is configured to place at least one lower bit of the first frame signal on the least significant bit side of a second frame signal to form composite data having the first number of bits and to convert the composite data to a second RGB signal. The second frame signal is a previous frame having a second number of bits composed of upper bits of the first number of bits other than at least one lower bit. An overdrive processing unit is configured to correct an amplitude of the first RGB signal corresponding to the difference between the first and second RGB signals.

主权项

1. A video signal processing apparatus, comprising:
a frame rate converter configured to write first and second video signals in a frame memory, the first and second video signals having a first frame frequency and each including a luminance signal and a color difference signal each of which has a first number of bits, to read from the frame memory, a first frame signal of a current frame having the first number of bits and a second frame signal of a frame previous to the current frame, the second frame signal having a second number of bits composed of upper bits of the first number of bits other than at least one lower bit, and to convert and output the first and second frame signals at a second frame frequency higher than the first frame frequency; a first RGB converter configured to convert the luminance signal and color difference signal of the first frame signal to a first RGB signal; a second RGB converter configured to place at least one lower bit of the first frame signal on the least significant bit side of the second frame signal to form composite data having the first number of bits and to convert the luminance signal and color difference signal of the composite data to a second RGB signal; and an overdrive processing unit configured to correct an amplitude of the first RGB signal corresponding to the difference between the first and second RGB signals.