Data transfer apparatus
AssigneeFujitsu Limited
InventorYoshihiro Takamatsuya
Life of this patent
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Abstract
A data transfer apparatus improving data transfer rate regardless of the original transfer mode in a USB interface is disclosed. A computer includes a bulk packet generation unit and an isochronous packet transmission unit. The bulk packet generation unit generates a bulk packet (or a control packet) which is a USB packet and has a predetermined structure including a first data area by describing data which is taken as an object of transfer in the first data area. The isochronous packet transmission unit generates an isochronous packet which is a packet in USB isochronous transfer and has a predetermined structure including a second data area by incorporating at least one bulk packet into the second data area, and isochronously transfers the isochronous packet to the mobile telephone over the USB interface.
Claims20
A data transfer apparatus, comprising:
- a first unit packet processing unit for generating a unit packet which is a USB packet and has a predetermined structure including a first data area by describing data which is taken as an object of transfer in the first data area;
- and
- a first isochronous packet processing unit for generating an isochronous packet which is a packet used in USB isochronous transfer and has a predetermined structure including a second data area by incorporating at least one unit packet into the second data area, and for isochronously transferring the isochronous packet over a USB interface.
A data transfer apparatus, comprising:
- a second isochronous packet processing unit for receiving an isochronous packet which is a packet in a USB isochronous transfer and isochronously transferred over a USB interface, and has a predetermined structure including a second data area, and for retrieving at least one unit packet incorporated into the second data area;
- and
- a second unit packet processing unit for retrieving data which is taken as an object of transfer from a first data area included in the unit packet which is a USB packet and has a predetermined structure including the first data area.
A data transfer apparatus, comprising:
- a first data transfer apparatus including:
- a first unit packet processing unit for generating a unit packet which is a USB packet and has a predetermined structure including a first data area by describing data which is taken as an object of transfer in the first data area;
- and
- a first isochronous packet processing unit for generating an isochronous packet which is a packet used in USB isochronous transfer and has a predetermined structure including a second data area by incorporating at least one unit packet into the second data area, and for isochronously transferring the isochronous packet to a second data transfer apparatus over a USB interface;
- a second data transfer apparatus including:
- a second isochronous packet processing unit for receiving the isochronous packet isochronously transferred from the first data transfer apparatus over the USB interface, and retrieving at least one unit packet incorporated into the second data area;
- and
- a second unit packet processing unit for retrieving data which is taken as an object of transfer from the first data area included in the unit packet;
- and
- a USB interface connecting the first and second data transfer apparatuses.
Dependencies are inferred from the claim text.