Data transfer system and data transfer method

• US 8,312,078 B2
• Filed: 07/07/2010
• Issued: 11/13/2012
• Est. Priority Date: 07/08/2009
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Yoshida, Shinichiro
• Primary Examiner(s): WANG, LIANG CHE A
• Application Number:
  US12/831,550
• Publication Number:
  US 20110010417A1
• Time in Patent Office: 860 Days
• Field of Search: 709/201, 709/203, 709/212, 709/224, 709/226, 709/229
• US Class Current: 709/203
• CPC Class Codes: G06F 13/102 where the programme performs an interfacing function, e.g. device driver G06F13/105 takes precedence; scheduling within device drivers G06F9/52; contention policies within device drivers G06F9/4881
• CPC Class Codes: G06F 2213/0042 Universal serial bus [USB]

Abstract

A data transfer system includes: a local unit (LU) that transmits data from the USB device connected to a local computer (LC) to a remote computer (RC); and a remote unit (RU) that acquires the data from LC and transfers the data to an application. LU includes: a unit that receives the data from the USB device to store the data in a memory, and notifies the USB device about the reception: and a unit that reads non-transferred data, converts the data to a network format, and transfers the data to RC when the amount of non-transferred data stored in the memory is equal to or greater than a threshold. RU includes: a unit that receives the data from LC and stores the data in a memory: and a unit that reads the unread data in the memory and transmits the data in an application format.

Claims

1. A data transfer system, comprising:

a local control unit for acquiring data from a USB device connected to a local computer and transmitting the acquired data to a remote computer via a communication network; and

a remote control unit for acquiring the data transmitted from the local control unit and transferring the acquired data to an application operating on the remote computer, wherein

the local control unit has;

a device control unit for receiving the data transmitted from the USB device to store the received data in a memory related to the local computer, and notifying, in response to the reception, the USB device about the successful reception; and

a transfer control unit for determining whether an amount of the non-transferred data that are stored in the memory related to the local computer is equal to or greater than a threshold and, when the amount of the non-transferred data is equal to or greater than the threshold, reading the non-transferred data that are stored in the memory related to the local computer, converting the read data to a format corresponding to the communication network, and transferring the converted data to the remote computer, and

the remote control unit has;

a reception unit for receiving the data transmitted from the transfer control unit and storing the received data in a memory related to the remote computer; and

a read control unit for reading the unread data that are stored in the memory related to the remote computer in response to a request from the application operating on the remote computer and transmitting the read data to the application in a format that can be processed by the application, and

wherein the read control unit transmits dummy data to the application when unread data are not stored in the memory related to the remote computer.

2. The data transfer system according to claim 1, wherein

the remote computer is a thin client server, and the local computer is a thin client terminal.