Patent ID: 6078693
Filing Date: 2000-06-20
Classification: G11B,H04N

Abstract:
A method of reproducing compressed encoded image data from a recording medium, said encoded image data representing a plurality of frames which correspond to an arrangement of pictures having at least one group of pictures (GOP) in which each said GOP includes different types of pictures including intraframe predictively (I) encoded, interframe predictively (P) encoded and bi-directionally predictively (B) encoded pictures, wherein said method comprises the steps of:setting an entry point at a position removed from a beginning of the arrangement of pictures;detecting, after setting said entry point, the image data corresponding to a first intraframe predictively encoded (I) picture and either a second intraframe predictively encoded (I) picture or an interframe predictively encoded (P) picture; anddecoding the image data representative of the respective bi-directionally predictively (B) encoded picture or pictures which occur after the detection of the image data corresponding to said first intraframe predictively encoded (I) picture and either said second intraframe predictively encoded (I) picture or said interframe predictively encoded (P) picture and outputting the decoded image data for display on a display unit and not decoding and outputting for display on said display unit the image data representative of the respective bi-directionally predictively (B) encoded picture or pictures which occur after said entry point and prior to the detection of the image data corresponding to said first intraframe predictively encoded (I) picture and either said second intraframe predictively encoded (I) picture or said interframe predictively encoded (P) picture.