Philips

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.

Merging thermal and visual images by a contrast pyramid

Abstract: Integration of images from different sensing modalities can produce information that cannot be obtained by viewing the sensor outputs separately and consecutively. This paper introduces a hierarchical image merging scheme based on a multiresolution contrast decomposition (the ratio of a low-pass pyramid). The composite images produced by this scheme preserve those details from the input images that are most relevant to visual perception. The method is tested by merging parallel registered thermal and visual images. The results show that the fused images present a more detailed representation of the depicted scene. Detection, recognition, and search tasks may therefore benefit from this new image representation.

Seed size, shape and vertical distribution in the soil: Indicators of seed longevity

Abstract: 1. We investigated the vertical distribution of seeds in the soil, using data from nine studies in five European countries. We discovered significant correlations between seed shape and distributio ...

Extended abstract: The butterfly PUF protecting IP on every FPGA

Abstract: IP protection of hardware designs is the most important requirement for many FPGA IP vendors. To this end, various solutions have been proposed by FPGA manufacturers based on the idea of bitstream encryption. An alternative solution was advocated in (E. Simpson and P. Schaumont, 2006). Simpson and Schaumont proposed a new approach based on physical unclonable functions (PUFs) for IP protection on FPGAs. PUFs are a unique class of physical systems that extract secrets from complex physical characteristics of the integrated circuits which along with the properties of unclonability provide a highly secure means of generating volatile secret keys for cryptographic operations. However, the first practical PUF on an FPGA was proposed only later in (J. Guajardo et al., 2007) based on the startup values of embedded SRAM memories which are intrinsic in some of the current FPGAs. The disadvantage of these intrinsic SRAM PUFs is that not all FPGAs support uninitialized SRAM memory. In this paper, we propose a new PUF structure called the butterfly PUF that can be used on all types of FPGAs. We also present experimental results showing their identification and key generation capabilities.

A 13.56-MHz RFID System Based on Organic Transponders

Abstract: RFID tags based on organic transistors are described, discussing in detail the IC blocks used to build the logic and the radio. Tags energized and read out at 13.56 MHz, de facto standard frequency for item-level identification, have been tested and enabled for the first time multiple-object identification, using different 6-bit codes. A complete 64-bit transponder, the most complex organic RFID tag reported to date, operates at 125 kHz and employs 1938 transistors

New developments in hard magnetic materials

Abstract: A review is given of the formation, the crystal structure and the magnetic properties of several classes of rare earth based intermetallic compounds that lend themselves as starting materials of permanent magnets. These compounds include R2Fe14B, R2Fe14C and R2Co14B and the large class of ternary rare earth compounds having the tetragonal ThMn12 structure. Special emphasis is given to the changes in magnetic properties of R2Fe17 compounds observed after interstitial solution of C or N atoms. The magnetic properties of all these compounds are discussed in terms of current models based on intersublattice and intrasublattice exchange and the interplay between the rare earth sublattice anisotropy and 3D sublattice anisotropy. A substantial portion of the review is devoted to manufacturing routes of permanent magnets and a description of the coercivity mechanisms operative in the magnets. A comparison is made of the performance and economic costs of various types of magnets and novel applications are briefly discussed.