Patent ID: 8208538
Filing Date: 2012-06-26
Classification: H04N

Abstract:
1. An image signal processing apparatus comprising: a rearranging unit configured to rearrange pictures of an input moving image signal in an order of predetermined picture types; a quantization unit configured to set a quantization step, and to quantize each picture of the moving image signal output from said rearranging unit according to the set quantization step; a coding unit configured to variable-length-encode the moving image signal quantized by said quantization unit; and a quantization step control unit having a quantization table in which values corresponding to a plurality of quantization steps to be used by said quantization unit are described, said quantization step control unit being configured to effect quantization step control to fixedly establish a different minimum value of the quantization steps in accordance with a picture type of the picture rearranged by said rearranging unit, so as not to set a quantization step corresponding to a value smaller than the minimum value which is established to the rearranged picture, to said quantization unit.