| 摘要 |
<p>A distributed electronic price display system includes a central computer communicating through a radio frequency system to receivers located preferably at a gondola unit between each aisle in a facility to display prices or other information. Each gondola unit may be controlled by a single controller, depending upon the size and number of shelves and number of electronic tags placed under the command of the single controller. Each level of control at the gondola redistributes information to the next level down by selectively enabling the receipt and re-transmission of the information at various routing points in the system, including master controllers, slave controllers and price tag modules. This process continues until the message is loaded into the electronic display. A change of price can be accomplished remotely from the central station by the use of a radio frequency terminal carried by an attendant. In addition, polling from the central computer is enabled to independently determine the price stored in each electronic tag.</p> |
