MEMORY MANAGING METHOD AND BUFFERING SYSTEM FOR SUCCESSIVE SCAN VIDEO SIGNAL PROCESSING IN DIGITAL TV RECEIVER

摘要

PROBLEM TO BE SOLVED: To buffer the digital video data of various forms in divided first and second video memories by partially overriding a standard buffering mode for buffering a received video signal in the memory when the received video signal is the second aspect different from the first aspect. SOLUTION: A system microcontroller 26 connected to a video processing circuit 30 monitors the same input BnotT signals more than two. When the existence of successive scan video data is detected, the value of a register is controlled and a memory controller 16 alternately writes the successive scan video data of the input BnotT signal in memories 18 and 20. The video data of various aspects such as successive scan aspect, interlace form, CCIR601/656 standard aspect or MPEG standard aspect can be rightly stored in a memory 14 and taken out.