Data processing apparatus, data processing method, program-length extension and reduction apparatus, and program-length extension and reduction method

摘要

A program-play apparatus in a program-length adjustment system is at least provided with a data separation section for separating video data DPV, a CC-data separation section for separating CC data DPCC, a video memory for temporarily storing the video data DPV, a CC-data memory for temporarily storing the CC data DPCC, and a central processing unit (CPU) for controlling each section. The CPU reads the CC data DPCC stored in the CC-data memory, inserts or deletes meaningless data into or from the CC data DPCC in response to the insertion or deletion of an image constituting the video data stored in the video memory, and outputs as new CC data DRCC.