Methods and apparatus for replacing an electronic shelf label battery
US6781580B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Sep 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and techniques for electronic shelf label (ESL) battery replacement are described. A first embodiment includes an ESL having a single battery and two battery compartments. A replacement battery is placed within the empty battery compartment before the old battery is removed. In a second embodiment, an ESL includes a single battery situated in a single battery compartment, and a large value capacitor connected in parallel with the battery which maintains the contents of the ESL's volatile RAM while the single battery is changed. In a third embodiment, an ESL includes two battery compartments, a single battery and a large value capacitor connected in parallel with the battery. In another aspect, an ESL displays instructions for changing the ESL battery. The ESL includes a pushbutton for user input which allows the user to cycle through multiple battery change instructions. These instructions may be stored in locally in the ESL or may be transmitted to the ESL from a host system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.