Patent ID: 6047100
Filing Date: 2000-04-04
Classification: H04N

Abstract:
A method for deriving and recording an MPEG compatible digital image representative signal which facilitates reproduction at more than one speed, said method comprising the steps of:a) receiving a digital image representative signal (09);b) temporally processing (30) said digital image representative signal to generate a progressivly scanned digital image representative signal (31);c) spatially processing (40) said progressivly scanned digital image representative signal (31) to produce a reduced resolution digital image representative signal (41);d) temporally sub-sampling (50, 60, 70) said reduced resolution digital image representative signal (41) to form a signal specific to a trick play speed (51, 61, 71);e) encoding (120, 130, 140)) said trick play speed specific signal to produce a trick play speed specific MPEG compatable signal (121, 131, 141);f) encoding (100) said digital image representative signal (09) to produce a normal play MPEG compatable signal (101);g) selecting between said trick play speed specific MPEG compatable signal (121, 131, 141) and said normal play MPEG compatable signal (101) to form a record formatted MPEG bit stream (200); and,h) recording (210) said record formatted MPEG bit stream (200).