Content distribution device
View Patent ↗According to one embodiment, a content distribution device includes a first connecting unit that is connectable to a first storage device including a first wireless communication unit that performs data communication based on a first wireless communication system, a second connecting unit that is connectable to a second storage device including a second wireless communication unit that performs data communication based on a second wireless communication system, and a controller. The controller switches communication with a content reception device from the first wireless communication system to the second wireless communication system while a distribution data file is being transmitted to the content reception device, and hands over second information indicating a packet number to the second wireless communication unit.
1. A content distribution device comprising:
a first connecting unit that is connectable to a first storage device including a first antenna and a first wireless communication unit that performs data communication with a content reception device through the first antenna based on a first wireless communication system;
a second connecting unit that is connectable to a second storage device including a second antenna and a second wireless communication unit that performs data communication with the content reception device through the second antenna based on a second wireless communication system, the first wireless communication system enabling communication to be performed in a communication range larger than a communication range of the second wireless communication system, the second wireless communication system enabling communication to be performed at a data transfer rate higher than a data transfer rate of the first wireless communication system; and
a controller configured to distribute a distribution data file to the content reception device,
wherein the controller is configured to
divide the distribution data file into a plurality of packets,
add first information indicating packet numbers in a transmission order,
transmit the packets having the first information,
switch communication with the content reception device from the first wireless communication system to the second wireless communication system while transmitting the distribution data file to the content reception device, and
hand over second information indicating the packet number to the second wireless communication unit when the communication with the content reception device is switched from the first wireless communication system to the second wireless communication system, and
the second wireless communication unit transmits the packets from a middle of the transmission order based on the handed over second information to the content reception device.
2. The content distribution device according to claim 1 ,
wherein the controller is configured to further acquire terminal identification information including first identification information that is stored in the content reception device and used when communication based on the first wireless communication system is performed and second identification information used when communication based on the second wireless communication system is performed through the communication based on the first wireless communication system after communication with the content reception device is established based on the first wireless communication system, and
the second information includes the terminal identification information in addition to the packet numbers.
3. The content distribution device according to claim 2 ,
wherein the second wireless communication unit determines whether or not identification information is identical to the second identification information included in the second information, the identification information being acquired from a terminal that is in a communicable state based on the second wireless communication system, and
the controller performs switching from the first wireless communication system to the second wireless communication system when the identification information is identical to the second identification information.
4. The content distribution device according to claim 1 ,
wherein the second wireless communication unit performs data communication with the content reception device using a two-way communication layer in which two-way data communication is performed, the two-way communication layer being arranged above a connection layer in which one-way data communication based on the second wireless communication system is performed.
5. The content distribution device according to claim 4 ,
wherein when a retransmission request is received from the content reception device using the two-way communication layer, the second wireless communication unit retransmits the packet having a packet number included in the retransmission request.
6. The content distribution device according to claim 4 ,
wherein when switching to the second wireless communication system is performed, the second wireless communication unit shares the packet number included in the second information with the content reception device using the two-way communication layer.
7. The content distribution device according to claim 1 ,
wherein a switching handover layer straddling a first stack in which a protocol in the first wireless communication system is specified and a second stack in which a protocol in the second wireless communication system is specified is arranged, and
the controller transfers the second information from the first stack to the second stack through the switching handover layer to hand over the second information.
8. The content distribution device according to claim 7 ,
wherein in the first stack, a connection layer in which the packet number is exchanged when a wireless path with the second stack is switched is arranged above a MAC layer of the first wireless communication system, and the switching handover layer is arranged above the connection layer.
9. The content distribution device according to claim 8 ,
wherein an OBEX layer or an SCSI layer is arranged above the switching handover layer, and
the controller transmits the rest of the packets communicated through the first wireless communication unit based on a definition of the OBEX layer or the SCSI layer based on the second information in the transmission of the packets.
10. The content distribution device according to claim 1 ,
wherein the controller performs division into packets of a size that is transmittable per once as data packets that are divided and transferred based on the second wireless communication system in the division of the packets.
11. The content distribution device according to claim 1 ,
wherein the first information are information capable of identifying a packet to be transmitted next.
12. The content distribution device according to claim 1 ,
wherein the first information are serial numbers added in order from the packet configuring a head of the distribution data file.
13. The content distribution device according to claim 1 , further comprising,
a non-volatile memory configured to store the distribution data file.
14. The content distribution device according to claim 1 ,
wherein the first connecting unit is connectable to a third storage device including the first antenna, the first wireless communication unit, and a first non-volatile memory configured to store the distribution data file, and
the second connecting unit is connectable to a fourth storage device including the second antenna, the second wireless communication unit, and a second non-volatile memory configured to store the distribution data file.
15. The content distribution device according to claim 1 ,
wherein the first connecting unit is connectable to a first communication device including the first antenna and the first wireless communication unit, and
the second connecting unit is connectable to a second communication device including the second antenna and the second wireless communication unit.
16. The content distribution device according to claim 1 ,
wherein the first wireless communication system is a wireless LAN, and
the second wireless communication system is TransferJet.
17. A content distribution device comprising:
a connecting unit that is connectable to a storage device including a first antenna, a first wireless communication unit that performs data communication with a content reception device through the first antenna based on a first wireless communication system, a second antenna, and a second wireless communication unit that performs data communication with the content reception device through the second antenna based on a second wireless communication system, the first wireless communication system enabling communication to be performed in a communication range larger than a communication range of the second wireless communication system, the second wireless communication system enabling communication to be performed at a data transfer rate higher than a data transfer rate of the first wireless communication system; and
a controller configured to distribute a distribution data file to the content reception device,
wherein the controller is configured to
divide the distribution data file into a plurality of packets,
add first information indicating packet numbers in a transmission order,
transmit the packets having the first information,
switch communication with the content reception device from the first wireless communication system to the second wireless communication system while transmitting the distribution data file to the content reception device, and
hand over second information indicating the packet number to the second wireless communication unit when the communication with the content reception device is switched from the first wireless communication system to the second wireless communication system, and
the second wireless communication unit transmits the packets from a middle of the transmission order based on the handed over second information to the content reception device.
18. The content distribution device according to claim 17 ,
wherein the controller is configured to further acquire terminal identification information including first identification information that is stored in the content reception device and used when communication based on the first wireless communication system is performed and second identification information used when communication based on the second wireless communication system is performed through the communication based on the first wireless communication system after communication with the content reception device is established based on the first wireless communication system, and
the second information includes the terminal identification information in addition to the packet numbers.
19. The content distribution device according to claim 18 ,
wherein the second wireless communication unit determines whether or not identification information is identical to the second identification information included in the second information, the identification information being acquired from a terminal that is in a communicable state based on the second wireless communication system, and
the controller performs switching from the first wireless communication system to the second wireless communication system when the identification information is identical to the second identification information.
20. A storage device comprising:
a first antenna;
a first wireless communication unit that performs data communication with a content reception device through the first antenna based on a first wireless communication system;
a second antenna;
a second wireless communication unit that performs data communication with the content reception device through the second antenna based on a second wireless communication system, the first wireless communication system enabling communication to be performed in a communication range larger than a communication range of the second wireless communication system, the second wireless communication system enabling communication to be performed at a data transfer rate higher than a data transfer rate of the first wireless communication system;
a non-volatile memory; and
a controller configured to distribute a distribution data file in the non-volatile memory to the content reception device in a state where the storage device is connected to an information processing device,
wherein the controller is configured to
divide the distribution data file into a plurality of packets,
add first information indicating packet numbers in a transmission order,
transmit the packets having the first information,
switch communication with the content reception device from the first wireless communication system to the second wireless communication system while transmitting the distribution data file to the content reception device, and
hand over second information indicating the packet number to the second wireless communication unit when the communication with the content reception device is switched from the first wireless communication system to the second wireless communication system, and
the second wireless communication unit transmits the packets from a middle of the transmission order based on the handed over second information to the content reception device.