1
Alex Herman, Noam Livneh: Low power two-way wireless communication system for electronic shelf labels. Electronic Retailing Systems, Oppedahl & Larson, August 22, 2000: US06108367 (27 worldwide citation)

A two-way low-power communication system for an electronic shelf label system uses a multiplicity of labels, each of which has an antenna and a diode. Data to be received at the label is Manchester encoded and 100% AM modulated onto a spread-spectrum RF signal, emitted from a broadcast antenna in th ...


2
Herman Alexander, Livneh Noam: Low-power two-way wireless communication system for electronic shelf labels. Electronic Retailing Systems International, OPPEDAHL Carl, September 12, 1996: WO/1996/027957

A two-way low-power communication system for an electronic shelf label system uses a multiplicity of labels (95), each of which has an antenna (15) and a diode (16). Data to be received at the label is Manchester encoded (45) and 100 % AM modulated onto a spread-spectrum RF signal emitted from a bro ...


3
Herman Alexander, Livneh Noam: Low-power two-way wireless communication system for electronic shelf labels. Electronic Retailing Syst, December 29, 1997: EP0813777-A1

A two-way low-power communication system for an electronic shelf label system uses a multiplicity of labels, each of which has an antenna and a diode. Data to be received at the label is Manchester encoded and 100% AM modulated onto a spread-spectrum RF signal, emitted from a broadcast antenna in th ...