Patent ID: 6201926
Filing Date: 2001-03-13
Classification: H04N

Abstract:
An apparatus for recording a digital picture signal on a recording medium, comprising:first means for deleting code words, which correspond to orthogonal-transform-resultant coefficients having order numbers equal to or higher than an order number ""n+1"", from code words composing each 1-intra-frame segment of an input digital picture signal to generate special picture data with a frame period NS on the basis of the input digital picture signal;second means for estimating a code amount CF(nmin) of special picture data generated by deleting code words, which correspond to orthogonal-transform-resultant coefficients having order numbers equal to or higher than an order number ""nmin+1"", from code words composing a 1-intra-frame segment of the input digital picture signal, where ""nmin"" denotes a lower limit of an order number ""n"";third means for deciding the frame period NS of the special picture data and a target code amount C so that the code amount CF(nmin) estimated by the second means will be equal to or smaller than the target code amount C;fourth means for recording the input digital picture signal on the recording medium; andfifth means for recording the special picture data generated by the first means on predetermined positions in the recording medium.