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Patent Issued for Transmission Apparatus, Transmission Method, Reception Apparatus, And Reception Method (USPTO 10,367,921): Sony Corporation

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08/14/2019 | 05:44pm EDT

2019 AUG 14 (NewsRx) -- By a News Reporter-Staff News Editor at Internet Daily News -- From Alexandria, Virginia, NewsRx journalists report that a patent by the inventors Michael, Lachlan Bruce (Saitama, Japan); Takahashi, Kazuyuki (Chiba, Japan), filed on October 19, 2015, was published online on August 12, 2019.

The patent’s assignee for patent number 10,367,921 is Sony Corporation (Tokyo, Japan).

News editors obtained the following quote from the background information supplied by the inventors: “For example, an Advanced Television Systems Committee (ATSC) 3.0, one of next-generation terrestrial broadcasting standards, determines use of not Transport Stream (TS) packets but UDP/IP, that is, IP packets including UDP packets, for data transmission. The use of the IP packets also in a broadcast system other than ATSC 3.0 is expected in the future.

“By the way, the IP packet includes various pieces of information in a header, and this causes a large overhead. Therefore, as a technique to compress the header in the IP packet for effective transmission of the IP packet, there has been provided a Robust Header Compression (RoHC) specified by an Internet Engineering Task Force (IETF).

“In the RoHC, the IP packet including all information in the header (hereinafter also referred to as a complete IP packet) is transmitted. Regarding a header in the subsequent IP packet, information different from that in the header in the previous complete IP packet is transmitted.

“Like the RoHC, the compression technique of the header in the IP packet that transmits the complete IP packet and then transmits the IP packet with the header including the information different from that in the header in the complete IP packet is hereinafter also referred to as a differential compression method.

“For example, in an advanced broadcast satellite (BS), the differential compression method has been specified as a technique to compress the header in the IP packet (Non-Patent Document 1).”

As a supplement to the background information on this patent, NewsRx correspondents also obtained the inventors’ summary information for this patent: “Problems to be Solved by the Invention

“Use of the differential compression method in broadcasting such as ATSC 3.0 possibly fails to broadcast the IP packets effectively.

“That is, after a receiving side receives the complete IP packets, the differential compression method can restore the subsequent IP packets. Accordingly, the complete IP packets need to be frequently broadcasted to some extent to restore the IP packets on the receiving side. This makes it difficult to expect a substantial effect of the compression.

“Furthermore, after the receiving side starts receiving the IP packets, the IP packets that the receiving side has received before the first reception of the complete IP packet cannot be restored. The IP packet process becomes possible after the complete IP packet is received first.

“Accordingly, it is possibly difficult for the receiving side to quickly process the IP packets in the differential compression method.

“The present technology has been made considering such circumstances to efficiently broadcast IP packets and ensure a quick process.

“Solutions to Problems

“A first transmission apparatus according to the present technology includes: a creation unit configured to create a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination index and a payload in the UDP packet, the destination index being made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet; and a transmission unit configured to transmit the transmission packet.

“A first transmission method according to the present technology includes steps of: creating a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination index and a payload in the UDP packet, the destination index being made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet; and transmitting the transmission packet.

“In the first transmission apparatus and transmission method according to the present technology, a transmission packet is created and transmitted. The transmission packet is constituted of a header and a payload. The header is constituted of type information and length information. The type information expresses whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed. The length information expresses a length of the transmission packet to transmit an IP packet including a UDP packet. The payload is constituted of a destination index and a payload in the UDP packet. The destination index is made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet.

“A first reception apparatus according to the present technology includes: a reception unit configured to receive a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination index and a payload in the UDP packet, the destination index being made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet; and a restoration unit configured to restore the IP packet from the transmission packet.

“A first reception method according to the present technology includes steps of: receiving a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination index and a payload in the UDP packet, the destination index being made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet; and restoring the IP packet from the transmission packet.

“In the first reception apparatus and reception method according to the present technology, a transmission packet is received and an IP packet is restored. The transmission packet is constituted of a header and a payload. The header is constituted of type information and length information. The type information expresses whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed. The length information expresses a length of the transmission packet to transmit an IP packet including a UDP packet. The payload is constituted of a destination index and a payload in the UDP packet. The destination index is made correspond to a destination IP address of the IP packet and a destination port number of the UDP packet.

“A second transmission apparatus according to the present technology includes: a creation unit configured to create a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet; and a transmission unit configured to transmit the transmission packet.

“A second transmission method according to the present technology includes steps of: creating a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet; and transmitting the transmission packet.

“In the second transmission apparatus and transmission method according to the present technology, a transmission packet is created and transmitted. The transmission packet is constituted of a header and a payload. The header is constituted of type information and length information. The type information expresses whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed. The length information expresses a length of the transmission packet to transmit an IP packet including a UDP packet. The payload is constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet.

“A second reception apparatus according to the present technology includes: a reception unit configured to receive a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet; and a restoration unit configured to restore the IP packet from the transmission packet.

“A second reception method according to the present technology includes steps of: receiving a transmission packet, the transmission packet being constituted of: a header constituted of type information and length information, the type information expressing whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information expressing a length of the transmission packet to transmit an IP packet including a UDP packet; and a payload constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet; and restoring the IP packet from the transmission packet.

“In the second reception apparatus and reception method according to the present technology, a transmission packet is received and an IP packet is restored. The transmission packet is constituted of a header and a payload. The header is constituted of type information and length information. The type information expresses whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed. The length information expresses a length of the transmission packet to transmit an IP packet including a UDP packet. The payload is constituted of a destination IP address of the IP packet, a destination port number of the UDP packet, and a payload in the UDP packet.

“Note that, the transmission apparatus and the reception apparatus may be independent apparatuses or may be internal blocks constituting one apparatus.

“Effects of the Invention

“The present technology efficiently broadcasts IP packets to ensure a quick process.

“Note that the effects described here are not necessarily limited and may be any one of the effects described in this disclosure.”

The claims supplied by the inventors are:

“The invention claimed is:

“1. A transmission apparatus comprising: circuitry configured to create a transmission packet, the transmission packet including a header, the header including type information and length information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, and a generic payload, the generic payload including a destination index and a payload in the UDP packet, the destination index being corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in the transmission apparatus; and transmit the transmission packet.

“2. The transmission apparatus according to claim 1, wherein when the destination index corresponding to the destination IP address and the destination port number is present, the circuitry is further configured to create the transmission packet of the generic payload, the generic payload including the destination index and the payload in the UDP packet, when the destination index corresponding to the destination IP address and the destination port number is absent, the circuitry is further configured to create the transmission packet of another generic payload, the other generic payload including the destination IP address, the destination port number, and the payload in the UDP packet, and the header of the transmission packet includes the type information, the length information, and kind information, the kind information indicating whether any of the destination index, the destination IP address, and the destination port number is included in the payload in the generic transmission packet.

“3. The transmission apparatus according to claim 1, wherein the destination index has a size less than a total size of the destination IP address and the destination port number.

“4. A transmission method, comprising: creating a transmission packet, the transmission packet including a header, the header including type information and length information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, and a generic payload, the generic payload including a destination index and a payload in the UDP packet, the destination index being corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in a transmission apparatus; and transmitting the transmission packet.

“5. A reception apparatus, comprising: circuitry configured to receive a transmission packet, the transmission packet including a header, the header including type information and length information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, and a generic payload, the generic payload including a destination index and a payload in the UDP packet, the destination index being corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in the transmission reception apparatus; and restore the IP packet from the transmission packet.

“6. The reception apparatus according to claim 5, wherein the circuitry is configured to restore the destination IP address and the destination port number that correspond to the destination index, the destination IP address being included in the IP header, the destination port number being included in the UDP header; restore information on a length of the IP packet included in the IP header and information on a length of the UDP packet included in the UDP packet from the length information; restore an item other than the destination IP address, the information on the length of the IP packet, and a checksum included in the IP header to a predetermined fixed value; restore an item other than the destination port number, the information on the length of the UDP packet, and a checksum included in the UDP header to a predetermined fixed value; and restore the respective checksums for the IP packet and the UDP packet through calculation.

“7. The reception apparatus according to claim 5, wherein in addition to the destination IP address and the destination port number, a transmission source IP address and a transmission source port number also correspond to the destination index, and the circuitry is further configured to restore the destination IP address and the destination port number that correspond to the destination index, the destination IP address being included in the IP header, the destination port number being included in the UDP header; restore the transmission source IP address and the transmission source port number that correspond to the destination index, the transmission source IP address being included in the IP header, the transmission source port number being included in the UDP header; restore information on a length of the IP packet included in the IP header and information on a length of the UDP packet included in the UDP packet from the length information; restore an item other than the destination IP address, the information on the length of the IP packet, the transmission source IP address, and a checksum included in the IP header to a predetermined fixed value; and restore the checksum for the IP packet and a checksum for the UDP packet through calculation.

“8. The reception apparatus according to claim 5, wherein the destination index has a size less than a total size of the destination IP address and the destination port number.

“9. A reception method, comprising: receiving a transmission packet, the transmission packet including a header, the header including type information and length information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, and a generic payload, the generic payload including a destination index and a payload in the UDP packet, the destination index being corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in the transmission a reception apparatus; and restoring the IP packet from the transmission packet.

“10. The reception method according to claim 9, wherein the destination index has a size less than a total size of the destination IP address and the destination port number.

“11. A transmission apparatus, comprising: circuitry configured to create a transmission packet, the transmission packet including a header, the header including type information, length information, and kind information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, the kind information indicating whether a destination index corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in the transmission apparatus is included in a generic payload; and the generic payload, the generic payload including the destination IP address of the IP packet, the destination port number of the UDP packet, and a payload in the UDP packet; and transmit the transmission packet.

“12. The transmission apparatus according to claim 10, wherein the generic payload in the transmission packet includes only the destination IP address and the destination port number in the IP header and the UDP header, respectively.

“13. A transmission method, comprising: creating a transmission packet, the transmission packet including a header, the header including type information, length information, and kind information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, the kind information indicating whether a destination index corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in a transmission apparatus is included in a generic payload, and the generic payload, the generic payload including the destination IP address of the IP packet, the destination port number of the UDP packet, and a payload in the UDP packet; and transmitting the transmission packet.

“14. A reception apparatus, comprising: circuitry configured to receive a transmission packet, the transmission packet including a header, the header including type information, length information, and kind information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, the kind information indicating whether a destination index corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in the reception apparatus is included in a generic payload; and the generic payload, the generic payload including the destination IP address of the IP packet, the destination port number of the UDP packet, and a payload in the UDP packet; and restore the IP packet from the transmission packet.

“15. The reception apparatus according to claim 14, wherein the circuitry is further configured to restore the destination IP address and the destination port number included in the header in the transmission packet, the destination IP address being included in the IP header, the destination port number being included in the UDP header; restore information on a length of the IP packet included in the IP header and information on a length of the UDP packet included in the UDP packet from the length information; restore an item other than the destination IP address, the information on the length of the IP packet, and a checksum included in the IP header to a predetermined fixed value; restore an item other than the destination port number, the information on the length of the UDP packet, and a checksum included in the UDP header to a predetermined fixed value; and restore the respective checksums for the IP packet and the UDP packet through calculation.

“16. The reception apparatus according to claim 14 for obtaining a transmission source IP address of the IP packet and a transmission source port number of the UDP packet in a layer upper than a transport layer, wherein the circuitry is further configured to restore the destination IP address and the destination port number included in a header in the transmission packet, the destination IP address being included in the IP header, the destination port number being included in the UDP header; restore information on a length of the IP packet included in the IP header and information on a length of the UDP packet included in the UDP packet from the length information; restore the transmission source IP address and the transmission source port number obtained in the upper layer, the transmission source IP address being included in the IP header, the transmission source port number being included in the UDP header; restore an item other than the destination IP address, the information on the length of the IP packet, the transmission source port number, and a checksum included in the IP header to a predetermined fixed value; and restore the respective checksums for the IP packet and the UDP packet through calculation.

“17. A reception method, comprising: receiving a transmission packet, the transmission packet including a header, the header including type information, length information, and kind information, the type information indicating whether an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header are compressed, the length information indicating a length of the transmission packet to transmit an IP packet including a UDP packet, the kind information indicating whether a destination index corresponding to a destination IP address of the IP packet and a destination port number of the UDP packet based on an index table stored in a reception apparatus is included in a generic payload, and the generic payload, the generic payload including the destination IP address of the IP packet, the destination port number of the UDP packet, and a payload in the UDP packet; and restoring the IP packet from the transmission packet.”

For additional information on this patent, see: Michael, Lachlan Bruce; Takahashi, Kazuyuki. Transmission Apparatus, Transmission Method, Reception Apparatus, And Reception Method. U.S. Patent Number 10,367,921, filed October 19, 2015, and published online on August 12, 2019. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,367,921.PN.&OS=PN/10,367,921RS=PN/10,367,921

(Our reports deliver fact-based news of research and discoveries from around the world.)

Copyright © 2019 NewsRx LLC, Internet Daily News, source Technology Newsletters

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