Patent ID: 8055120

Claim:
A high speed dubbing apparatus, comprising: a read section for reading a bit stream conforming to a DVD-VR standard from a first storage device, analyzing the readout bit stream and outputting obtained stream analysis information and the readout bit stream; a first buffer for storing an output from the read section and outputting the stored bit stream, the first buffer having a capacity equal to or larger than the size of a VOBU (Video Object Unit) of the readout bit stream; a navigation pack generator for replacing a real-time data information pack in the bit stream output from the first buffer with a navigation pack using the stream analysis information, and outputting a resultant bit stream; a second buffer for storing an output from the navigation pack generator and outputting the stored bit stream, the second buffer having a capacity equal to or larger than the size of the VOBU of the readout bit stream; and a write section for converting the bit stream output from the second buffer into a bit stream conforming to a DVD-video standard using the stream analysis information, and writing the converted bit stream in a second storage device, wherein a first sum is less than both a second sum and a third sum, the first sum is a sum of: a time required for the first buffer to output the bit stream stored in the first buffer, a time required for the navigation pack generator to replace the real-time data information pack with the navigation pack, and a time required for the second buffer to store the resultant bit stream, the second sum is a sum of: a time required for the read section to read the bit stream from the first storage device, a time required for the read section to analyze the readout bit stream, and a time required for the first buffer to store the readout bit stream, and the third sum is a sum of: a time required for the second buffer to output the bit stream stored in the second buffer, a time required for the write section to convert the bit stream output from the second buffer, and a time required for the write section to write the converted bit stream in the second storage device, and wherein the read section, the navigation pack generator, and the write section operate in parallel.