Data recording method and apparatus, data reproducing method and apparatus, and data edition method and apparatus

A data recording apparatus for recording encoded content data in encode units onto a recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis, comprising:

• means for dividing encoded content data every predetermined length, adding a header, and packetizing into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets;
• further adding a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the snack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area;
• means for recording said data which has been packetized and further formed as pack data into each of the sectors on said recording medium in correspondence to said sectors;
• and
• means for, when said encoded content data is divided every predetermined length and packetized, recording into the stream header an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector into the header of said one packet.

A data reproducing method of reproducing encoded content data in encode units from a data recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis and on which the content data is recorded, wherein

• on said data recording medium, encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length are further added to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, and when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into the stream header of said one packet, and said data reproducing method comprises:
• accessing and reproducing said data recording medium every sector;
• and
• when a desired sector on said recording medium is accessed, setting a position for starting reproduction in said sector on the basis of information which is obtained from the encode unit pointer of the header of said one packet and shows the start position of the complete encode unit.

A data reproducing apparatus for reproducing encoded content data in encode units from a data recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis and on which the content data is recorded, wherein

• on said data recording medium, encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length are further added to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, and when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into the stream header of said one packet, and said data reproducing apparatus comprises:
• means for accessing and reproducing said data recording medium every sector;
• and
• means for, when a desired sector on said recording medium is accessed, setting a position for starting reproduction in said sector on the basis of information which is obtained from the encode unit pointer of the header of said one packet and shows the start position of the complete encode unit.

A data editing method of editing encoded content data in encode units recorded on a recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis, wherein

• on said data recording medium, encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length are further added to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, and when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into said stream header, and said data editing method comprises:
• when a series of said content data is edited, recording information indicative of an edit point into a header of said sector;
• and
• when the information indicative of said edit point is detected from said header, setting a position for starting the reproduction on the basis of information which is obtained from the encode unit pointer of the header of said packet and shows the start position of the complete encode unit.

A data editing apparatus for editing encoded content data in encode units recorded on a recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis, wherein

• on said data recording medium, encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length are further added to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, and when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into the stream header of said packet, and said data editing apparatus comprises:
• means for, when a series of said content data is edited, recording information indicative of an edit point;
• and
• means for, when the information indicative of said edit point is detected from said header, setting a position for starting the reproduction on the basis of information which is obtained from the encode unit pointer of the header of said packet and shows the start position of the complete encode unit.

A data recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis and on which encoded content data in encode units is recorded, wherein

• encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length are further added to each packet to thereby form pack data, wherein each pack has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, and when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into the stream header of said one packet.

A data recording medium which is divided into sectors of a predetermined length, each sector including a user data area of fixed length, and can be accessed on said sector unit basis and on which encoded content data in encode units is recorded, wherein

• encoded content data is divided every predetermined length, a header is added, the data is packetized into packets, each packet including a data area, wherein a size of the encode units is determined independent of a size of the packets, a pack header of fixed length, a PES header of fixed length, and a stream header of fixed length, are further added to each packet to thereby form pack data, wherein each pack data has a same fixed length as the user data of each sector, wherein the pack header includes data as to a stuffing length of stuffing data inserted into the data area, and the PES header includes scrambling control data controlling scrambling of data in the data area, said data which has been packetized and further formed as pack data is recorded into each of the sectors on said recording medium in correspondence to said sectors, when said encoded content data is packetized every predetermined length, an encode unit pointer indicative of a start position of a complete encode unit among a plurality of encode units which are arranged in one of said packets within one sector is recorded into the stream header of said packet, and when a series of said content data is edited, information indicative of an edit point is recorded.