Portable data terminal

Abstract

A short distance wireless communication function ( 140 ) such as Bluetooth is provided as a communication function part, which is subordinate to a main communication function having a communication function like that of a usual portable telephone set for making communication via a network. Among other units present in the neighborhood, those conforming to preset search conditions are set as limited opposite side units ( 110, 120, 130 ) for direct data transmission to these opposite side units ( 200, 300 ) with a close distance wireless communication function ( 140 ).

Description

technical field [0001] The present invention relates to an improved portable data terminal unit capable of direct communication with other terminal units without a network, which is different from an ordinary portable telephone set having a main communication function part including a communication function through a network . Background technique [0002] Recently, a file transfer system has been proposed which allows direct transfer of files between portable data terminals without any agent of a file server and also allows input of a file transfer request operation on a separate telephone set side (Japanese Patent Laid-Open No.2001-128242). This disclosure relates to transferring (ie, downloading) files from a remote location to a nearby portable data terminal or personal computer by using a portable phone. More specifically, a file is transferred (ie, downloaded) using a cellular phone having a wireless function for cellular phone communication and a separate short-rang...

AI Technical Summary

Problems solved by technology

[0006] In the system proposed in Japanese Patent Laid-Open No. 2001-128242, in each portable terminal, it is necessary to provide portable phone file receiving application means for making list requests and transmitting selected inputs, and also providing for transmitting lists and body files on the transfer side of the portable data terminal, resulting in a complex structure

[0007] On the other hand, there is no permission in the application of Japanese Patent Laid-Open No. 2001-128242 to transmit voice and data between two portable telephone terminals by using Bluetooth technology.

[0008] In addition, as is well known in this technical field, when searching for other terminals by using the Bluetooth technology, since all terminals capable of communication are identified, it is difficult to identify the The counterparty of communication is only limited to the terminal desired by the user

At the same time, when it is desired to transmit data to a separate wireless data terminal existing nearby using short-range wireless communication functions such as Bluetooth and infrared communication, it is also necessary to match the troublesome operations of the transmission side and the reception side

[0009] In particular, in the case where the transmitted data represents an image picked up by an imaging device, there has not been an efficient way to satisfy the need of transmitting the data to a specific terminal existing nearby with a simple operation.

Images