Patent ID: 6483875
Filing Date: 2002-11-19
Classification: H04N

Abstract:
A picture signal processing apparatus comprising:selection means for selectively seizing a plurality of compressed pictures at a first certain transfer rate obtained in inter-frame compression, converting inter-frame forward predictively-coded pictures into intra-frame coded pictures, in terms of a pre-set number of frames as a unit, and modifying prediction data of bidirectional predictive-coded pictures to be in accordance with the conversion of said inter-frame forward predictively-coded pictures into said intra-frame coded pictures; expansion means for expanding compressed picture signals selected by said selection means; first input/output means for inputting/outputting, converting said picture processing signal into component signals and modifying the transfer rate of said picture signals outputted by said expansion means, said first input/output means including two separate memories; picture processing means for performing various picture processing operations on picture signals outputted by said first input/output means for outputting processed picture signals; compression means for compressing the processed picture signals outputted by said picture processing means for outputting compressed processed picture signals at a second certain transfer rate; second input/output means separate from said first input/output means for inputting/outputting, converting said picture processing signal into component signals and modifying the transfer rate of said compressed picture signals outputted by said expansion means, said first input/output means including two separate memories; and control means for controlling the selecting operation by said selection means, expansion processing by said expansion means, input/output processing by said first input/output means, picture processing by said picture processing means, compression by said compression means and input/output processing by said second input/output means.