Transmission method, reception method, transmitting apparatus, and receiving apparatus

A reception method for a receiving apparatus including a plurality of decoders, the reception method comprising:

• receiving a plurality of packets, the plurality of packets being obtained by packetizing a plurality of pieces of encoded data, the plurality of pieces of encoded data being obtained by encoding a plurality of regions of a picture such that the plurality of regions are decoded independently, and the packetizing being performed such that pieces of encoded data for different regions are not stored in a single packet;
• and
• decoding the plurality of packets in parallel by using the plurality of decoders,
• wherein the plurality of packets are received as data for the picture in a same location where the plurality of pieces of encoded data are stored, and the plurality of regions overlap each other on boundaries of the plurality of regions, and
• respective pieces of encoded data of two adjacent regions include data on regions overlapping in a boundary of the two adjacent regions;
• each of the plurality of regions is a rectangle, and a size in a horizontal direction of each of the plurality of regions is identical to a size in the horizontal direction of the picture;
• at least one piece of encoded data included in the plurality of pieces of encoded data includes:
• information indicating whether the piece of encoded data includes data on an overlapping region that overlaps another piece of encoded data;
• or information indicating a range of the overlapping region;
• and
• header information is included with each of the packets and includes identification information indicating any one of:
• (1) only the packet is included in a basic data unit;
• (2) a plurality of packets are included in the basic data unit, and the packet is a first packet of the basic data unit;
• (3) a plurality of packets are included in the basic data unit, and the packet is a packet other than the first packet and a last packet of the basic data unit;
• and (4) a plurality of packets are included in the basic data unit, and the packet is the last packet of the basic data unit;
• and
• wherein the identification information includes two-bit values corresponding to (1)-(4), each two-bit value being different for each of (1)-(4), and
• the header information of the packet includes offset information indicating a bit length from a start of encoded data of the picture that includes the plurality of pieces of encoded data to a start of a piece of encoded data included in the packet.

A transmitting apparatus comprising:

• a divider that divides a picture into a plurality of regions;
• an encoder that generates a plurality of pieces of encoded data that respectively correspond to the plurality of regions by encoding the plurality of regions such that each of the plurality of regions is decoded independently;
• a packetizer that packetizes the generated plurality of pieces of encoded data in a plurality of packets such that pieces of encoded data for different regions are not stored in one packet;
• and
• a transmitter that transmits the plurality of packets,
• wherein the plurality of regions overlap each other on boundaries of the plurality of regions, and
• respective pieces of encoded data of two adjacent regions include data on regions overlapping in a boundary of the two adjacent regions;
• each of the plurality of regions is a rectangle, and a size in a horizontal direction of each of the plurality of regions is identical to a size in the horizontal direction of the picture;
• at least one piece of encoded data included in the plurality of pieces of encoded data includes:
• information indicating whether the piece of encoded data includes data on an overlapping region that overlaps another piece of encoded data;
• or information indicating a range of the overlapping region;
• and
• header information is included with each of the packets and includes identification information indicating any one of:
• (1) only the packet is included in a basic data unit;
• (2) a plurality of packets are included in the basic data unit, and the packet is a first packet of the basic data unit;
• (3) a plurality of packets are included in the basic data unit, and the packet is a packet other than the first packet and a last packet of the basic data unit;
• and (4) a plurality of packets are included in the basic data unit, and the packet is the last packet of the basic data unit;
• and
• wherein the identification information includes two-bit values corresponding to (1)-(4), each two-bit value being different for each of (1)-(4), and
• the header information of the packet includes offset information indicating a bit length from a start of encoded data of the picture that includes the plurality of pieces of encoded data to a start of a piece of encoded data included in the packet.

A receiving apparatus comprising:

• a receiver that receives a plurality of packets, the plurality of packets being obtained by packetizing a plurality of pieces of encoded data, the plurality of pieces of encoded data being obtained by encoding a plurality of regions of a picture such that the plurality of regions are decoded independently, the packetizing being performed such that pieces of encoded data for different regions are not stored in a single packet;
• and
• a plurality of decoders that decode the plurality of packets in parallel,
• wherein the different packet and the plurality of packets are received as data for the picture in a same location, and the plurality of regions overlap each other on boundaries of the plurality of regions, and
• respective pieces of encoded data of two adjacent regions include data on regions overlapping in a boundary of the two adjacent regions;
• each of the plurality of regions is a rectangle, and a size in a horizontal direction of each of the plurality of regions is identical to a size in the horizontal direction of the picture;
• at least one piece of encoded data included in the plurality of pieces of encoded data includes:
• information indicating whether the piece of encoded data includes data on an overlapping region that overlaps another piece of encoded data;
• or information indicating a range of the overlapping region;
• and
• header information is included with each of the packets and includes identification information indicating any one of:
• (1) only the packet is included in a basic data unit;
• (2) a plurality of packets are included in the basic data unit, and the packet is a first packet of the basic data unit;
• (3) a plurality of packets are included in the basic data unit, and the packet is a packet other than the first packet and a last packet of the basic data unit;
• and (4) a plurality of packets are included in the basic data unit, and the packet is the last packet of the basic data unit;
• and
• wherein the identification information includes two-bit values corresponding to (1)-(4), each two-bit value being different for each of (1)-(4), and
• the header information of the packet includes offset information indicating a bit length from a start of encoded data of the picture that includes the plurality of pieces of encoded data to a start of a piece of encoded data included in the packet.