File transfer protocol for mobile computer

• US 20050102537A1
• Filed: 10/12/2004
• Published: 05/12/2005
• Est. Priority Date: 11/07/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Inventors: Zheng, Jianyu Roy
• Granted Patent: US 7,673,066 B2
• Time in Patent Office: Days
• US Class Current: 726/4
• CPC Class Codes: H04L 51/066 Format adaptation, e.g. format conversion or compression
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/30 Profiles
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements

Abstract

A method is disclosed for communicating using a device having a Palm OS. SMB is preferentially used to communicate with a node, and if use of SMB is not possible, FTP is used, and if use of FTP is not possible, Bluetooth is used. If FTP or Bluetooth is selected as the protocol, file sharing between the device and node that entails a read or write is executed by temporarily copying a file to an internal Palm OS memory of the device, performing the read or write on the file, and then copying the file back to the node to overwrite a previous version of the file at the node. For non-Palm OS file transfer to the internal memory, the file is wrapped in a Palm OS stream in the internal memory for executing reads or writes. For file transfer to an expansion Palm OS memory card, byte-to-byte copying of the file is executed using the FAT of the expansion memory, with the file being transferred through an internal Palm OS memory of the device.

Claims

1. A method for communicating using a device having a Palm operating system (OS), comprising preferentially using server message block (SMB) to communicate with a node, and if use of SMB to communicate with the node is not possible, preferentially using file transfer protocol (FTP), and if use of FTP is not possible to communicate with the node, using Bluetooth.

2. The method of claim 1, wherein if a protocol for communication between the device and a communication node has not been identified, determining whether the node can communicate using a SMB dialect available to the device, and if so, selecting SMB as the communication protocol.

3. The method of claim 2, wherein if the node cannot communicate using a SMB dialect available to the device, the node is queried with a FTP message and if an appropriate response is received, FTP is selected as the communication protocol.

4. The method of claim 3, wherein if an appropriate response is not received, identifications of devices are attempted to be gathered using Bluetooth, and if an identification matches the identification of the node, Bluetooth is selected as the communication protocol.

5. The method of claim 1, wherein if SMB or Bluetooth is selected as the protocol, a user name is automatically set to a default name.

6. The method of claim 1, wherein if FTP or Bluetooth is selected as the protocol, file sharing between the device and node that entails a read or write is executed by temporarily copying a file to an internal Palm OS memory of the device, performing the read or write on the file, and then copying the file back to the node to overwrite a previous version of the file at the node.

7. The method of claim 1, comprising transferring at least one file not in Palm OS format between an internal Palm OS memory of the device and the node by wrapping the file in a Palm OS stream in the internal memory and performing at least one of:

a read, and a write, on the file.

8. The method of claim 1, comprising transferring at least one file between an expansion Palm OS memory of the device and the node by byte-to-byte copying of the file using a file allocation table (FAT) of the expansion memory, the file being transferred through an internal Palm OS memory of the device.

9. A system, comprising:

at least one processor communicating using a protocol stack including;

an application layer having at least two application layer protocols selected from the group including Bluetooth, file transfer protocol (FTP), and server message block (SMB); and

a protocol selection layer on top of the application layer for selecting which application layer protocol to use to communicate with a node.

10. The system of claim 9, wherein the application layer has all three application layer protocols.

11. The system of claim 10, comprising a Palm operating system (OS) accessing the protocol stack.

12. The system of claim 11, wherein the Palm OS executes logic comprising:

preferentially using SMB to communicate with a node, and if use of SMB to communicate with the node is not possible, preferentially using FTP, and if use of FTP is not possible to communicate with the node, using Bluetooth.

13. The system of claim 12, wherein if FTP or Bluetooth is selected, the Palm OS executes file sharing between the device and node that entails a read or write by temporarily copying a file to an internal Palm OS memory, performing the read or write on the file, and then copying the file back to the node to overwrite a previous version of the file at the node.

14. The system of claim 13, wherein the Palm OS transfers at least one file not in Palm OS format between the internal Palm OS memory and the node by wrapping the file in a Palm OS stream in the internal memory and performing at least one of:

a read, and a write, on the file.

15. The system of claim 14, wherein the Palm OS transfers at least one file between an expansion Palm OS memory and the node by byte-to-byte copying of the file using a file allocation table (FAT) of the expansion memory, the file being transferred through the internal Palm OS memory.

16. A Palm OS device, comprising:

at least one internal memory;

at least one expansion memory;

at least one Palm operating system (OS) accessing the memories;

means for determining whether the node can communicate using a SMB dialect available to the device;

means for selecting SMB as the communication protocol if SMB communication between the device and node is possible;

means for, if the node cannot communicate using a SMB dialect available to the device, querying the node with a FTP message;

means for, if an appropriate response is received, selecting FTP as the communication protocol;

means for, if an appropriate response is not received, gathering identifications of devices using Bluetooth; and

means for, if an identification matches an identification of the node, selecting Bluetooth as the communication protocol.

17. The device of claim 16, wherein if SMB or Bluetooth is selected as the protocol, means automatically set a user name to a default name.

18. The device of claim 16, wherein if FTP or Bluetooth is selected as the protocol, file sharing between the device and node that entails a read or write is executed by temporarily copying a file to an internal Palm OS memory of the device, performing the read or write on the file, and then copying the file back to the node to overwrite a previous version of the file at the node.

19. The device of claim 16, comprising means for transferring at least one file not in Palm OS format between an internal Palm OS memory of the device and the node by wrapping the file in a Palm OS stream in the internal memory and performing at least one of:

a read, and a write, on the file.

20. The device of claim 16, comprising means for transferring at least one file between an expansion Palm OS memory of the device and the node by byte-to-byte copying of the file using a file allocation table (FAT) of the expansion memory, the file being transferred through an internal Palm OS memory of the device.