Abstract:
Optical articles that include adhesive lightguides having resonant circuits and one or more light sources are described. More particularly, optical articles having resonant circuits that, upon a triggering event, cause the one or more light source to emit light into the adhesive lightguide such that light is transported within the lightguide by total internal reflection are described. Additionally, applications and embodiments that include such optical articles are described.
Abstract:
A wireless presentation system includes communication means for line-of-sight communication links such that an association between a content holder and a desired presentation device can be automatically established using line-of-sight communication links.
Abstract:
A remote terminal unit for use in monitoring a metallic pipeline can take an electrical measurement at the pipe and transmit the measurement in a modulated signal to a main measurement unit located along the pipe and distant from the remote terminal unit. The electrical measurement is taken at regular time intervals between a reference electrode electrically connected to the pipe and a coupon composed of a sacrificial corrosion material in order to monitor the pipe for possible corrosion. The electrical measurement is modulated with a low frequency carrier signal for transmission along the pipe, eliminating the need to take the measurements directly at physical locations along the pipe.
Abstract:
A wireless presentation system includes communication means for line-of-sight communication links such that an association between a content holder and a desired presentation device can be automatically established using line-of-sight communication links.