DATA ENCODING APPARATUS, DATA ENCODING METHOD, DATA OUTPUT APPARATUS, DATA OUTPUT METHOD, SIGNAL PROCESSING SYSTEM, SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, DATA DECODING APPARATUS, AND DATA DECODING METHOD

摘要

This invention relates to an apparatus for encoding data or the like, which disables the data to be copied in a condition where its good quality is maintained without deteriorating a quality of an output owing to the data before being copied. Synchronization signals VD and HD separated from the analog image data Van are delayed and supplied to a clock generation circuit 1133 where a clock CLK is generated in a range of an effective screen based on the synchronization signals. This clock signal CLK is shifted vertically and horizontally so that a phase of image data Vdg1 output from A/D converter 1134 is also shifted. In this image data Vdg1, a signal-deteriorating factor is generated. Encoding section 1135 performs encoding by sampling, conversion encoding, and the like. By shifting the phase of the image data Vdg1, a sampling position and/or a block position are caused to be shifted from a position where obtaining original encoding data relative to the image data Van1, thereby generating significant deterioration in the encoding section 1135.