Patent ID: 6654544
Filing Date: 2003-11-25
Classification: H04N

Abstract:
A video data recording apparatus for recording video data to a record medium, comprising:receiving means for receiving an elementary stream from outside of the apparatus, the elementary stream containing video data encoded using a variable length code having a hierarchical structure of a block layer, a macro block layer, a slice layer, a picture layer, a GOP layer, and a sequence layer, the block layer being composed of variable length data of which one screen of video data is divided into a plurality of blocks, video data of each block is orthogonally transformed and thereby coefficient data is generated, the coefficient data being encoded with a variable length code, the macro block layer being composed of a plurality of blocks that are spatially adjacent, the slice layer being composed of at least one macro block, the picture layer being composed of at least one slice, the GOP layer being composed of at least one picture, the sequence layer being composed of at least one GOP; recording side stream converting means for converting the elementary stream that is output from said receiving means such that each slice in the slice layer is composed of only a single macro block, thereby generating a device stream having a fixed bit rate suitable for the record medium; record processing means for performing a process for recording the device stream to the record medium and forming record data; and recording means for recording the record data received from said record processing means to the record medium.