WIRELESS BAR CODE SYMBOL READING SYSTEM CAPABLE OF AUTOMATICALLY COLLECTING AND STORING SYMBOL CHARACTER DATA WHEN HAND-SUPPORTABLE UNIT IS OPERATED OUTSIDE OF ITS RF DATA COMMUNICATION RANGE, AND AUTOMATICALLY TRANSMITTING STORED SYMBOL CHARACTER DATA WHEN THE HAND-SUPPORTABLE UNIT IS OPERATED WITHIN ITS RF DATA COMMUNICATION RANGE
US7028904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Jan 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wireless bar code symbol reading system for use in a work environment, comprising a wireless hand-supportable bar code symbol reader in two-way RF communication with a base station operably connected to a host system, by way of an RF-based wireless data communication link having a predetermined RF communication range over which two-way communication of data packets can occur in a reliable manner. When the wireless bar code symbol reader is located inside of the predetermined RF communication range based on measuring the strength of the detected reference signal, it automatically transmits to the base station, the symbol character data string produced while the reader is located inside of the predetermined RF communication range. When the wireless reader is located outside of the range, based on measuring the strength of said detected reference signal, the reader automatically collects and stores the symbol character data string produced during that time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.