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.

Magnetostatic wave technology: a review

Abstract: Magnetostatic wave (MSW) technology has been under investigation for more than a decade. Using ferrimagnetic films such as liquid-phase epitaxial (LPE) yttrium iron garnet (YIG) films, MSW devices and subsystems offer instantaneous bandwidths of up to 1 GHz at operating frequencies in the microwave bands (0.5-26.5 GHz). Because MSWs travel with velocities two-to-four orders of magnitude slower than electromagnetic waves, compact devices can be built using hybrid and monolithic microwave integrated circuit (MMIC) techniques. These devices include delay lines, dispersive delay lines, filters, resonators, and directional couplers. Subsystems using these devices, such as electronically tunable delay lines channelized filter banks, delay-line discriminators, oscillators, and frequency multipliers can be used for applications in signal identification, control and processing directly at microwave frequencies. An overview of the MSW technology is presented and an assessment of the various devices and subsystems that can be built using thin and thick LPE-YIG films is provided. >

A Framework for High-Level Feedback to Adaptive, Per-Pixel, Mixture-of-Gaussian Background Models

Abstract: Time-Adaptive, Per-Pixel Mixtures Of Gaussians (TAPPMOGs) have recently become a popular choice for robust modeling and removal of complex and changing backgrounds at the pixel level. However, TAPPMOG-based methods cannot easily be made to model dynamic backgrounds with highly complex appearance, or to adapt promptly to sudden "uninteresting" scene changes such as the repositioning of a static object or the turning on of a light, without further undermining their ability to segment foreground objects, such as people, where they occlude the background for too long. To alleviate tradeoffs such as these, and, more broadly, to allow TAPPMOG segmentation results to be tailored to the specific needs of an application, we introduce a general framework for guiding pixel-level TAPPMOG evolution with feedback from "high-level" modules. Each such module can use pixel-wise maps of positive and negative feedback to attempt to impress upon the TAPPMOG some definition of foreground that is best expressed through "higher-level" primitives such as image region properties or semantics of objects and events. By pooling the foreground error corrections of many high-level modules into a shared, pixel-level TAPPMOG model in this way, we improve the quality of the foreground segmentation and the performance of all modules that make use of it. We show an example of using this framework with a TAPPMOG method and high-level modules that all rely on dense depth data from a stereo camera.

Mobile device client

Abstract: A device client that supports customer care and distribution of update packages to electronic devices makes it possible to efficiently manage and update firmware and software in electronic devices. A terminal management/device management server employs extensions to an industry standard device management protocol to update configuration information, to provision the electronic device, and to manage the electronic device, for example. The electronic device may receive update packages, and update agent(s) in the electronic device may update the firmware and/or software of the electronic device. A diagnostic client in the electronic device facilitates remote diagnosis and a traps client facilitates setting traps and retrieving collected information. A terminal management server may remotely invoke control actions within the electronic device using management objects not supported by the industry standard device management protocol. A user of the electronic device may use a self-care portal to administer self-care and to conduct diagnostics. A subsequent customer-care call may use such information collected during self-care.

Track pad pointing device with areas of specialized function

Abstract: Prescribed areas of a track pad surface are dedicated to one or more prescribed or programmable pointing, clicking, scrolling or hot-key functions. These specialized touch sensing areas are adjacent to a main touch sensing area, and include a tactile cue such as a textured border or textured surface. A visual indication such as a label also may be used to identify the specialized function. A visual cue, such as a light, also may be generated when the user's finger is in a specialized touch sensing area. One specialized touch sensing area is dedicated to correspond to a window scrolling function adding convenience for scrolling web pages, word processing documents, tables and other content windows displayed on a computer screen. An on-off button is included to activate or deactivate the track pad operations.

Review Paper: A critical review of the present and future prospects for electronic paper

Abstract: — The commercial success of monochrome electronic paper (e-Paper) is now propelling the development of next-generation flexible, video, and color e-Paper products. Unlike the early battles in the 1980s and 1990s between transmissive and emissive display technologies, there is a extraordinary diversity of technologies vying to become the next generation of e-Paper. A critical review of all major e-Paper technologies, including a technical breakdown of the performance limitations based on device physics and commentary on possible future breakthroughs, is presented. In addition, the visual requirements for color e-Paper are provided and compared to standards used in conventional print. It is concluded that researchers have much work remaining in order to bridge the significant gap between reflective electronic displays and print-on-paper.