This paper presents the first clinical results for validating the accuracy of respiratory rate obtained for hospitalized patients using a non-contact, low power 2.4 GHz Doppler radar system. Twenty-four patients were measured in this study. The respiratory rate accuracy was benchmarked against the respiratory rate obtained using Welch Allyn Propaq Encore model 242, the Embla Embletta system with Universal XactTrace respiratory effort sensor and Somnologica for Embletta software, and by counting chest excursions. The 95% limits of agreement between the Doppler radar and reference measurements fall within +/−5 breaths per minute.
Really paper‐like display as thin as 290 μm has been developed, which has a 160×160 array of pixels, 3.1‐inch diagonal viewable image size, and white‐paper appearance. Plastic substrate with 120 μm in thickness was used resulting in a flexible display which can be bent up to 20 mm in radius of curvature. This can be realized only by QR‐LPD® technology.
Abstract— We have developed new powder materials that exhibit liquid behavior, which can lead to the realization of novel bistable and reflective displays having paper‐white appearance, high contrast, and quick response. Two types of display were demonstrated, one had 160 × 160 array of pixels and the other had 320 × 320 in a 3.1‐in.‐diagonal viewable image size corresponding to 66 and 132 dpi, respectively. These displays were driven by passive‐matrix addressing. The displays showed a reflectivity of more than 41%, a contrast more than 1:10, and a pixel response time of less than 0.2 msec. The seven‐segment display for use in clocks was also demonstrated.
We have developed new liquid‐behavior‐powder materials that realize a novel type of bistable reflective display showing paper‐white appearance, high contrast and quick response. The demonstrated display has a 160×160 array of pixels and a 3.1‐ inch diagonal viewable image size with a pixel response less than 0.2 msec and is driven by passive‐matrix addressing.
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