Patent ID: 8902981

Claim:
A video signal generation apparatus for receiving a bit stream of video coded data generated by intra-coding and inter-coding, and decoding the bit stream in units of blocks each having a specified size to generate a video signal, comprising: a decoding unit configured to decode the video coded data to obtain a decoded image and coding information for a decoding target block included in the bit stream; a writing unit configured to write each piece of the coding information at a specified bit position on one bit plane having a size the same as that of the decoding target block according to a coding information format that includes a common area and a switch interpretation area each having a specified bit length and a specified bit position, the common area including a fixed code area for synchronization, a decoding target block cyclic number area, a picture coding information describing area, a slice coding information describing area, a slice type area, a decoding target block intra-code area, a block division unit flag area, and a block type area, each area having a specified bit length, the switch interpretation being an area, having a specified bit length, in which coding information of a data format is written wherein the data format is different according to whether information in the decoding target block intra-code area indicates intra-coding or inter-coding, wherein the writing unit: writes a fixed code for synchronization having a predetermined value in the fixed code area for synchronization, writes a decoding target block cyclic number indicating a position of the decoding target block on a screen in the decoding target block cyclic number area, writes picture coding information assigned to the decoding target block in the picture coding information describing area, writes slice coding information assigned to the decoding target block in the slice coding information describing area, writes a slice type of the decoding target block in the slice type area, writes a flag value indicating whether the decoding target block has been coded by intra-coding or inter-coding in the decoding target block intra-code area, writes information indicating a block division of the decoding target block in the block division unit flag area and the block type area, and writes coding information of intra-coding or inter-coding in the switch interpretation area where coding information of the intra-coding is written according to a data format conforming to the intra-coding if the decoding target block has been coded by intra-coding, and coding information of the inter-coding is written according to a data format conforming to the inter-coding if the decoding target block has been coded by inter-coding; and a generation unit configured to generate a video signal by superimposing the one bit plane on the decoded image of the decoding target block.