DATA COMMUNICATION SYSTEM, DATA COMMUNICATION METHOD, AND DATA COMMUNICATION APPARATUS

Title:

DATA COMMUNICATION SYSTEM, DATA COMMUNICATION METHOD, AND DATA COMMUNICATION APPARATUS

Document Type and Number:

WIPO Patent Application WO/2005/103917

Kind Code:

A1

Abstract:

Data are transferred between data communication apparatuses having noncontact interfaces, while they can be prevented from being overlapped between the data transfer source and the data transfer destination. In response to a data transfer instruction from the data transfer source apparatus, the data transfer destination apparatus holds the data in a provisional creation state. Then, the data transfer source apparatus, when receiving a transfer instruction response from the data transfer destination apparatus, places its held data into an invalid state. Then, in response to a transfer acknowledge instruction from the data transfer source apparatus, the data transfer destination apparatus validates the data in provisional creation state. Then, in response to a transfer acknowledge response from the data transfer destination apparatus, the data transfer source apparatus deletes the data in the invalid state.

Inventors:

OTA TOYOKAZU (JP)
KURITA TARO (JP)
TAKEMURA TOSHIHARU (JP)

Application Number:

PCT/JP2005/007380

Publication Date:

November 03, 2005

Filing Date:

April 18, 2005

Export Citation:

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Assignee:

SONY CORP (JP)
OTA TOYOKAZU (JP)
KURITA TARO (JP)
TAKEMURA TOSHIHARU (JP)

International Classes:

G06F13/10; G06F12/14; G06K17/00; G06K19/00; G07F7/08; G07F7/10; H04L12/28; H04L1/16; (IPC1-7): G06F13/10; G06F12/14; G06K17/00; G06K19/00

Foreign References:

JPH11505348A	1999-05-18
JP2003296487A	2003-10-17
JP2000331239A	2000-11-30
JPH1027225A	1998-01-27
JP2000322535A	2000-11-24

Other References: