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Institution

Philips

CompanyVantaa, Finland
About: Philips is a company organization based out in Vantaa, Finland. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 68260 authors who have published 99663 publications receiving 1882329 citations. The organization is also known as: Koninklijke Philips Electronics N.V. & Royal Philips Electronics.


Papers
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Proceedings ArticleDOI
19 Mar 2007
TL;DR: In this article, the authors investigated the feasibility of identification protocols based on elliptic curve cryptography (ECC) and showed that it is feasible on RFID tags and compared different implementation options and explored the cost that side-channel attack countermeasures would have on such implementations.
Abstract: RFID-tags are a new generation of bar-codes with added functionality. An emerging application is the use of RFID-tags for anti-counterfeiting by embedding them into a product. Public-key cryptography (PKC) offers an attractive solution to the counterfeiting problem but whether a publickey cryptosystem can be implemented on an RFID tag or not remains unclear. In this paper, we investigate which PKC-based identification protocols are useful for these anti-counterfeiting applications. We also discuss the feasibility of identification protocols based on elliptic curve cryptography (ECC) and show that it is feasible on RFID tags. Finally, we compare different implementation options and explore the cost that side-channel attack countermeasures would have on such implementations

245 citations

Patent
16 Nov 2004
TL;DR: In this article, the spectral content of the generated radiation is controllably varied over a period of time so that a customer of the marketplace perceives a change in color and/or an illusion of motion associated with the article(s).
Abstract: Methods and apparatus for providing illumination in a marketplace. In one example, radiation comprising variable color light is generated using a plurality of LEDs. One or more articles in the marketplace are illuminated with the generated radiation, and the spectral content of the generated radiation is controllably varied over a period of time so that a customer of the marketplace perceives a change in color and/or an illusion of motion associated with the article(s) due to a selective color interaction between the generated radiation and the article(s). Examples of marketplaces include, but are not limited to, consumer environments, work environments, sporting environments, entertainment environments, retail establishments, restaurants, museums, art galleries and the like.

245 citations

Journal ArticleDOI
TL;DR: The potential use of lamps with larger wavelengths to effectively reduce the negative effect of light pollution on moth population dynamics and communities where moths play an important role is indicated.

245 citations

Journal ArticleDOI
P. Hansen1, K. Witter1, W. Tolksdorf1
TL;DR: In this article, the saturation magnetization, optical absorption, and the Faraday rotation were investigated on flux-grown crystals for a single-ion theory and the concentration dependence of these properties was shown to be linear.
Abstract: The saturation magnetization ${M}_{s}$, the uniaxial anisotropy ${K}_{u}$, the optical absorption $\ensuremath{\alpha}$, the Faraday rotation ${\ensuremath{\theta}}_{F}$, and the Faraday ellipticity ${\ensuremath{\psi}}_{F}$ of epitaxial garent films of composition ${\mathrm{Y}}_{3\ensuremath{-}x}{\mathrm{Bi}}_{x}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$ and ${\mathrm{Y}}_{3\ensuremath{-}y}{\mathrm{Pb}}_{y}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$ have been investigated for $x\ensuremath{\le}1.7$ and $y\ensuremath{\le}0.25$. The magnetostriction constants ${\ensuremath{\lambda}}_{100}$,${\ensuremath{\lambda}}_{111}$ and the cubic anisotropy ${K}_{1}$ were studied on flux-grown crystals for $x\ensuremath{\le}1$. The temperature dependence of ${M}_{s}$, ${K}_{1}$, ${K}_{u}$, ${\ensuremath{\lambda}}_{100}$, ${\ensuremath{\lambda}}_{111}$, and ${\ensuremath{\theta}}_{F}$, ${\ensuremath{\psi}}_{F}$ at 633 nm has been measured in the range $4.2 \mathrm{K}\ensuremath{\le}T\ensuremath{\le}{T}_{c}$. The concentration dependence of these properties is linear. In particular, the contribution of the bismuth and lead to the Faraday rotation $\frac{\ensuremath{\Delta}{\ensuremath{\theta}}_{F}}{x}$ and $\frac{\ensuremath{\Delta}{\ensuremath{\theta}}_{F}}{y}$ at $\ensuremath{\lambda}=633$ nm turned out to be -25 400 and -18 500 deg ${\mathrm{cm}}^{\ensuremath{-}1}$ at $T=4.2$ K and -20 600 and -18 400 deg ${\mathrm{cm}}^{\ensuremath{-}1}$ at $T=295$ K, respectively. The temperature dependence of ${\ensuremath{\theta}}_{F}$ and ${\ensuremath{\psi}}_{F}$ can be described in terms of the sublattice magnetizations inferred from the fit of the molecular-field theory to the measured saturation magnetization. The extracted magneto-optical coefficients reveal a nonlinear concentration dependence. The magnitude of the growth-induced anisotropy is essentially controlled by the supercooling of the melt for both the lead- and bismuth-substituted films. The temperature dependence of ${K}_{u}^{g}$ is discussed in terms of the single-ion theory.

245 citations

Patent
Damian M. Lyons1
21 Dec 1998
TL;DR: In this article, a system and method for constructing three-dimensional images using camera-based gesture inputs of a system user is presented, which consists of a computer-readable memory, a video camera for generating video signals indicative of the gestures of the system user and an interaction area surrounding the system users, and a video image display.
Abstract: A system and method for constructing three-dimensional images using camera-based gesture inputs of a system user. The system comprises a computer-readable memory, a video camera for generating video signals indicative of the gestures of the system user and an interaction area surrounding the system user, and a video image display. The video image display is positioned in front of the system users. The system further comprises a microprocessor for processing the video signals, in accordance with a program stored in the computer-readable memory, to determine the three-dimensional positions of the body and principle body parts of the system user. The microprocessor constructs three-dimensional images of the system user and interaction area on the video image display based upon the three-dimensional positions of the body and principle body parts of the system user. The video image display shows three-dimensional graphical objects superimposed to appear as if they occupy the interaction area, and movement by the system user causes apparent movement of the superimposed, three-dimensional objects displayed on the video image display.

245 citations


Authors

Showing all 68268 results

NameH-indexPapersCitations
Mark Raymond Adams1471187135038
Dario R. Alessi13635474753
Mohammad Khaja Nazeeruddin12964685630
Sanjay Kumar120205282620
Mark W. Dewhirst11679757525
Carl G. Figdor11656652145
Mathias Fink11690051759
David B. Solit11446952340
Giulio Tononi11451158519
Jie Wu112153756708
Claire M. Fraser10835276292
Michael F. Berger10754052426
Nikolaus Schultz106297120240
Rolf Müller10490550027
Warren J. Manning10260638781
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20235
202239
2021898
20201,428
20191,665
20181,378