Digital moving picture data player system having a time-based access list

A digital moving picture image packet data playback method accessing a disc storing encoded image data in image data packets, each packet including a header having a disc storage position and a time stamp, comprising:

• referencing a hardware data structure packet information list composed of an entry for each packet, the entries having a predetermined order, each entry comprising the time stamp included in the packet header of the corresponding encoded image data packet and positional information pointing to the disc storage position of the packet header of the corresponding encoded image data packet;
• obtaining the position information corresponding to a playback portion of the image data;
• and
• decoding the encoded image data as specified by the obtained position information.

A computer-readable storage medium on which is recorded a program for causing a computer to execute a process accessing a disc storing encoded image data in image data packets, each racket including a header having a disc storage position and a time stamp, said process comprising:

• encoding an image in packets and storing the encoded image onto the disc;
• referencing a hardware data structure packet information list composed of an entry for each packet, the entries having a predetermined order, each entry comprising the time stamp included in the packet header of the corresponding encoded image data packet and positional information pointing to the disc storage position of the packet header of the corresponding encoded image data packet;
• obtaining the position information corresponding to a playback portion of the image data;
• and
• decoding the encoded image data based as specified by the obtained position information.

A digital moving picture data player, comprising:

• an encoding unit encoding image in packets;
• a packet information generating unit generating a packet information list, comprising an entry for each packet, the entries having a predetermined order, each entry comprising a time stamp included in a packet header of a corresponding encoded image data packet and position information pointing to the packet header of the corresponding encoded image data packet;
• a packet information referencing unit referencing the packet information list and obtaining the position information corresponding to a playback portion of the moving picture data;
• and
• a decoding unit decoding encoded image data as specified by the position information obtained by said packet information referencing unit.

A digital moving picture data player playing image data encoded in encoded image data packets, comprising:

• a packet information referencing unit referencing a packet information list having an entry for each packet, each entry comprising a time stamp included in a corresponding header of the encoded image data packet and position information pointing to a position at which the packet is stored, the entries ordered by the time stamp, and obtaining the position information corresponding to a playback portion of the image data specified by a time;
• a decoding unit decoding the encoded image data specified by the position information obtained by said packet information referencing unit;
• and
• a player unit playing the decoded image data.

A digital moving picture image packet data playback method accessing a disc storing encoded image data in image data packets, each packet including a header having a disc storage position and a time stamp, said method comprising:

• allowing the input of time information;
• referencing a packet information list composed of an entry for each packet, the entries having a predetermined order, each entry comprising the time stamp included in the packet header of the image data packet and positional information pointing to the disc storage position of the packet header of the corresponding encoded image data packet;
• responsive to the time information obtaining the position information from the list corresponding to a playback portion of the image data using the time stamp;
• and
• decoding the encoded image data as specified by the obtained position information and allowing movement within a moving picture to be played responsive to the time information.