Electronic display for store shelves
US6543688B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A system for electronically displaying item data information such as item prices and item descriptions that is available in updatable form from a central buffer, processing, multiplexing and serving unit. The system provides a multi-frequency tone signal containing item data applicable to an item on a shelf associated with an electronic display module and containing the address code of that particular module. The electronic display module responds to its particular address code and receives, decodes, and displays the data relating to the item. It further includes a multi-frequency tone signaling system to retransmit the received data to the server unit as a means of confirming that the proper information had been received and displayed. Item data information is routed, distributed, and transferred through the use of multiplexed signal buses. The central buffer, processing, multiplexing and serving unit receives product description and pricing data information from the store central computer and processes this information for transmission to the display modules. It also maintains records of the status of all display modules including those display modules that cannot be accessed or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.