Patent ID: 6282245
Filing Date: 2001-08-28
Classification: H04N

Abstract:
A method of processing an input signal having redundant fields and representing a moving picture which is divided into a plurality of frames such that each respective frame is formed of one odd field and one even field, the input signal supplied at a predetermined clock rate from a moving picture source for input to a signal processing device at said clock rate for predetermined processing operations thereon, said method comprising the steps of:detecting the redundant fields from the input signal;combining the odd and even fields to form the respective frames such that the detected redundant fields are eliminated from the input signal; andinserting a plurality of predetermined invalid frames into the input signal to obtain an output signal for processing at the same clock rate as the predetermined clock rate of the input signal, said output signal thereby having valid and invalid frames, said invalid frames being treated differently than said valid frames by being skipped over in a subsequent processing operation in which said valid frames are processed, whereby the moving picture source and signal processing device are synchronized to operate at the same clock rate.