Electronic shelf edge price display system

Details Electronic shelf edge price display system Electronic shelf edge price display system

1994-05-04

1996-08-20

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

36446401, 235375, 235383, G06F 704

Patent

active

055482821

ABSTRACT:
A system for electronically displaying prices on shelves. To improve operational reliability and to reduce the field strengths emitted, the invention teaches that the transmitter elements are laid in the vicinity of the display units on the edges of the shelves, that the components of the display units receive the energy emitted by the transmitter elements inductively, and that the control transmitter sends an alternating current to the transmitter elements in the pauses between the data packets, and recharges the power supplies of the display units.

REFERENCES:
patent: 4500880 (1985-02-01), Gomersall et al.
patent: 4821291 (1989-04-01), Stevens et al.
patent: 4962466 (1990-10-01), Revesz et al.
patent: 5172314 (1992-12-01), Poland et al.
patent: 5345231 (1994-09-01), Koo et al.
patent: 5374815 (1994-12-01), Waterhouse et al.

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