FAST MOTION TRICK MODE USING NON-PROGRESSIVE DUMMY BIDIRECTIONAL PREDICTIVE PICTURES

摘要

THE INVENTION CONCERNS A METHOD (200) AND SYSTEM (100) PERFORMING A TRICK MODE ON A VIDEO SIGNAL CONTAINING A PLURALITY OF ORIGINAL PICTURES. THE METHOS INCLUDES THE STEPS OF SELECTIVELY SKIPPING (214) AT LEAST ONE OF THE ORIGINAL PICTURES TO CONVERT THE VIDEO SIGNAL TO A TRICK MODE SIGNAL IN RESPONSE TO A TRICK MODE COMMAND AND SELECTIVELY INSERTING (224) AT LEAST ONE DUMMY BIDIRECTIONAL PREDICTIVE PICTURE IN THE TRICK MODE VIDEO SIGNAL USING FIELD-BASED PREDICTION. THE METHOD CAN ALSO INCLUDE THE STEPS OF MONITORING (220) THE TRICK MODE VIDEO SIGNAL IN WHICH THE STEP OF SELECTIVELY INSERTING AT LEAST ONE DUMMY BIDIRECTIONAL PREDECTIVE PICTURE IN THE TRICK MODE VIDEO SIGNAL CAN BE DONE IF THE BIT RATE OF THE TRICK MODE VIDEO SIGNAL EXCEEDS A PREDETERMINED THRESHOLD. FIGURE 2