Portable wireless optical scanner with user interface mounted on charger
US5929425A · kind A · utility
Inventor
Key dates
| Filing date | Dec 12, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Dec 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K17/0022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A timer operates when a barcode reader is lifted from a charger and a charger terminal is isolated from the charger and a communication control means transmits an application acknowledgment signal to the fixed unit via a light receiving means when a barcode indicating the ID number of a user is read within the predetermined time after operation of the timer. A check means of the fixed unit watches detection of reception of the application acknowledgment signal by a communication control means and drives an alarm means when such signal is not received within the predetermined time after the timer has operated, while lights a communicating condition display lamp of the charger for each reception of the application acknowledgment signal and each subsequent communication. Accordingly, the fixed unit can be connected easily to a host computer and can easily select its installation area, while the charger can be set to the area near a user. Communication can be confirmed from both handy unit and the charger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.