Hadasit Medical Research Services and Development Ltd.

Electronic Retailing Systems, Inc.

Noam Livneh

Yoav Mintz

Alex Herman

Vered Bar-Bracha

Arik Bracha

Arik Bar-Bracha

A transdermal antenna may be partially inserted into a cavity in the body of a mammal to receive wireless data transmissions from devices located within the body and relay the data to devices located outside of the body. The transdermal antenna may include a first antenna which may be inserted inside of the body cavity and receive radio frequency data transmissions from devices located inside the body. The transdermal antenna may conduct the received data transmissions to a relay mechanism located outside of the body using coaxial cables, waveguides or a combination of both. The relay mechanism may relay the conducted data transmissions to a receiver device located outside of the body by using a wire connection, such as a coaxial cable, or a wireless communication link via a transceiver coupled to a second antenna.

Transdermal antenna

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 the store ceiling. Preferably the RF is around 2.4 Ghz, and the spreading is via direct sequence phase shift keying with a chipping rate at least ten times the RF frequency. A 63-bit sequence may be used. The label detects the RF energy, and a simple comparator followed by a manchester decoder extrats the digital data stream. Data to be set from the label is communicated via a selective modulation of the diode with an offset signal, preferably in the range of 1 to 10.7 Mhz. During this time the ceiling broadcast antenna is emitting a spread-spectrum signal that is not data-modulated in any way. Energy re-emitted by the label antenna is picked up by a ceiling-mounted receiving antenna, and the energy is diverted to two sidebands during times when the diode is being modulated. The received signal is spread-spectrum demodulated and band-pass filtered so that only sideband energy is processed. The label's outbound data stream is recovered by digital signal processing techniques from the sideband energy. The result is a minimization of cost and complexity in the label and an optimal exploitation of the bandwidth given the regulatory framework thereof.

Low power two-way wireless communication system for electronic shelf

Growing community of inventors

Yuvalim, Israel

Noam Livneh