Patent ID: 7274861

Claim:
An information recording apparatus for encoding video information and audio information into a system stream and recording the system stream to a computer-readable medium, the system stream being allowed to have a first format (TS) and a second format (PS), the information recording apparatus comprising: a first encoding section operable to encode video information and audio information in a predetermined encoding manner according to the first format (TS) to generate a video elementary stream and an audio elementary stream; a second encoding section operable to perform system-encoding by multiplexing the video elementary stream and the audio elementary stream to generate the system stream according to the first format (TS); and a control section operable to control the first encoding section and the second encoding section, wherein the first format (TS) is allowed to have a constrained format used for converting the system stream from the first format (TS) to the second format (PS), the control section controls the first and second encoding sections so that each encoding is done according to the constrained format, and according to the constrained format, a presentation of the video information of continuous complete data blocks always starts at a top field and ends at a bottom field, the continuous complete data blocks being included in a continuous reference presentation time for video information and audio information, and the continuous reference presentation time including at least one data block.