Portable data terminal

• US 20030220077A1
• Filed: 05/22/2003
• Published: 11/27/2003
• Est. Priority Date: 05/27/2002
• Status: Active Grant

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Hosokawa, Taisuke
• Granted Patent: US 7,158,755 B2
• Time in Patent Office: Days
• US Class Current: 455/41.2
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

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).

Claims

1. A portable data terminal unit provided with a short distance communication function part for short distance wireless communication with other units suited for communication with the own unit, wherein the short distance wireless communication function part has a search function part for searching other units as opposite side communication units conforming to preset conditions.

2. The portable data terminal unit according to claim 1, wherein the search function part includes a search condition memory part for storing a plurality of search conditions registered in such a form as to be selectable as desired by the user.

3. The portable data terminal unit according to claim 1, wherein the search function part has a display function part for displaying a result of the search.

4. The portable data terminal unit according to claim 1, wherein the search function part includes a search condition memory part for storing a plurality of search conditions registered in such a form as to be selectable as desired by the user, a display function part for displaying other units, which are found, as a result of search conducted under the search conditions registered in the search condition memory part, to be in conformity to the search conditions, and a selection operating part for selecting desired one of a plurality of other units displayed, as a result of search, on the display function part.

5. The portable data terminal unit according to claim 4, where in the selection operating part is constructed to be capable of selecting a plurality of pertinent other units at a time.

6. The portable data terminal unit according to claim 1, which further comprises an imaging part for obtaining electronic image data corresponding to a light image of a scene object.

7. The portable data terminal unit according to claim 6, which further comprises an image transmitting means for transmitting newest data among electronic image data obtained in the imaging part by the short distance wireless communication function part to other units as opposite side units of communication conforming to the preset conditions.

8. The portable data terminal unit according to claim 6, which further comprises a control part capable, in case when an operation of starting an operation of obtaining electronic image data by the imaging part is made, of also automatically starting a function of searching other units as opposite side units of communication conforming to the preset conditions so long the image transmitting functions has been selected.

9. The portable data terminal unit according to one of claims 1 to 8, wherein the short distance wireless communication function part is provided as a communication function part subordinate to a main communication function part having a communication function for communication via a network.