Moving picture reproducing device and moving picture reproducing method

A computer readable medium selected from one of magnetic storage media and optical storage media, and encoded with a computer readable code controlling a computer to control :

• a time information interpolation processing unit to count a number of frames from a first frame up to a second frame, and to interpolate time information for a key frame based on time information of the first frame and the counted number of frames, and a decoding unit to decode and output the moving picture data based on the interpolated time information of the key frame, wherein the first frame appears toward a positive direction of a time axis from a predetermined intermediate seek position in the data stream, and the second frame appears after the key frame, with the key frame not having time information and appearing toward the positive direction of the time axis from the intermediate seek position.

A moving picture reproducing method for reproducing an inputted data stream of moving picture data comprised of a plurality of frames, comprising:

• Interpolating time information by counting up a number of frames from a first frame up to a second frame, the first frame having time information and appearing toward a positive direction of a time axis from a predetermined intermediate seek position in the data stream, with the second frame not having time information and appearing after a key frame, the key frame appearing toward the positive direction of the time axis from the intermediate seek position, and interpolating the time information for the key frame based on the time information of the first frame and the counted number of frames.

A computer readable medium selected from one of magnetic storage media and optical storage media, and encoded with computer readable code controlling a computer to control the execution of a method of for:

• interpolating time information by counting up a number of frames from a first frame up to a second frame, the first frame having time information and appearing toward a positive direction of a time axis from a predetermined intermediate seek position in the data stream, with the second frame not having time information and appearing after a key frame, the key frame appearing toward the positive direction of the time axis from the intermediate seek position, and interpolating the time information for the key frame based on the time information of the first frame and the counted number of frames.

A computer readable medium selected from one of magnetic storage media and optical storage media, and encoded with a computer program controlling a computer to execute a moving picture reproduction operation for an inputted data stream of moving picture data comprised of a plurality of frames, the moving picture reproduction process comprising:

• interpolating time information by counting up a number of frames from a first frame up to a second frame, the first frame having time information and appearing first toward a positive direction of a time axis from a predetermined intermediate seek position in the data stream, with the second frame not having time information and appearing after a key frame, the key frame appearing toward the positive direction of the time axis from the intermediate seek position, and interpolating the time information for the key frame based on the time information of the first frame and the counted number of frames.

A reproducing device for a data stream, comprising:

• an interpolation processing unit to interpolate a predetermined time information for a key frame, of the data stream, based on time information of a reference frame, of the data stream and different from the key frame, and a counted number of frames between the reference frame and another frame of the data stream;
• and
• a decoding processing unit to output decoded video frames of the data stream, for an intermediate seek position of the data stream, based on the interpolated time information for the key frame.

A computer readable medium selected from one of magnetic storage media and optical storage media, and encoded with a computer readable code controlling a computer to control:

• an interpolation processing unit to interpolate a predetermined time information for a key frame, of the data stream, based on time information of a reference frame, of the data stream and different from the key frame, and a counted number of frames between the reference frame and another frame of the data stream;
• and a decoding processing unit to output decoded video frames of the data stream, for an intermediate seek position of the data stream, based on the interpolated time information for the key frame.