Hewlett-Packard

About: Hewlett-Packard is a company organization based out in Palo Alto, California, United States. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 34663 authors who have published 59808 publications receiving 1467218 citations. The organization is also known as: Hewlett Packard & Hewlett-Packard Company.

System and method for using a multiple-use credit card

Abstract: The present invention includes a system and method for facilitating financial transactions including a device configured to interface with a multi-use card, using information from a multi-use card to access a database that includes account information for accounts at multiple financial institutions, presenting the associated account information to a user, accepting a selection from the user of a selected account and posting the charges onto the selected account.

Color Snakes

Abstract: A framework for object segmentation in vector-valued images is presented in this paper. The first scheme proposed is based on geometric active contours moving toward the objects to be detected in the vector-valued image. Object boundaries are obtained as geodesics or minimal weighted-distance curves, where the metric is given by a definition of edges in vector-valued data. The curve flow corresponding to the proposed active contours holds formal existence, uniqueness, stability, and correctness results. The scheme automatically handles changes in the deforming curve topology. The technique is applicable, for example, to color and texture images as well as multiscale representations. We then present an extension of these vector active contours, proposing a possible image flow for vector-valued image segmentation. The algorithm is based on moving each one of the image level sets according to the proposed vector active contours. This extension also shows the relation between active contours and a number of partial-differential-equations-based image processing algorithms as anisotropic diffusion and shock filters.

Semantic blogging and decentralized knowledge management

Abstract: Tapping into the structured metadata in snippets of information gives communities of interest effective access to their collective knowledge.

Protective capping apparatus for an ink jet pen

Abstract: An ink pen is provided with a protective capping apparatus to protect against damage caused by the ingress of dirt and debris, the accumulation or solidification of ink, the discharge of static electricity or the like. The protective capping apparatus has a protective cap movable between an open position and a closed position. In the closed position the protective cap shields a portion of an ink pen such as the ink-jets or the electrical contacts.

The role of threading dislocations in the physical properties of GaN and its alloys

Abstract: In this paper, we review progress on understanding the role of threading dislocations (TDs) in the physical properties of GaN and its alloys. A growing body of work provides compelling evidence that TDs in the group-III nitrides behave as non-radiative recombination centers, have energy levels in the otherwise forbidden energy gap, act as charged scattering centers in doped materials, and provide a leakage current pathway. In comparison with conventional III–V semiconductors, the relatively small minority carrier diffusion length Ld (∼50 nm) in the III-nitrides, combined with favorable TD geometries, minimize dislocation-related degradation. The small value of Ld also allows for appreciable optical emission in materials with TD densities as high as 1010 cm−2.