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Institution

Hewlett-Packard

CompanyPalo Alto, California, United States
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 & Substrate (printing). The organization has 34663 authors who have published 59808 publications receiving 1467218 citations. The organization is also known as: Hewlett Packard & Hewlett-Packard Company.


Papers
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Patent
25 Nov 1987
TL;DR: In this paper, a monolithic thermal ink jet printhead is presented, which can be manufactured by standard integrated circuit and printed circuit processing techniques and allows a smoother ink supply since the ink is fed directly from the backside to the resistor through an opening in the rigid substrate.
Abstract: A monolithic thermal ink jet printhead is presented. This monolithic structure makes page-width array thermal ink jet printheads possible. The monolithic structure can be manufactured by standard integrated circuit and printed circuit processing techniques. A nickel-plating process constructs a nozzle on top of resistors, thereby eliminating adhesion and alignment problems. A rigid substrate supports a flexible cantilever beam upon which the resistors are constructed. The cantilever beam, together with the ink itself, buffers the impact of cavitation forces during bubble collapsing and results in a better resistor reliablility. The monolithic printhead allows a smoother ink supply since the ink is fed directly from the backside to the resistor through an opening in the rigid substrate. The orifice structure is constructed by a self-aligned, two-step plating process which results in compound bore shape nozzles.

199 citations

Patent
12 Feb 2001
TL;DR: In this paper, a method and device is provided for obscuring the location of a mobile entity to a specified accuracy level by combining with the components of the available location data, additional components randomized over a range set by the difference between the known accuracy of the known location data and the specified accuracy.
Abstract: A method and device is provided for obscuring the location of a mobile entity to a specified accuracy level. Available location data that has a known accuracy greater than the specified accuracy has its accuracy decreased (85) by combining with the components of the available location data, additional components randomized over a range set by the difference between the known accuracy of the available location data and the specified accuracy level.

199 citations

Proceedings ArticleDOI
07 Dec 2013
TL;DR: Widx is introduced, an on-chip accelerator for database hash index lookups, which achieves both high performance and flexibility by decoupling key hashing from the list traversal, and processing multiple keys in parallel on a set of programmable walker units.
Abstract: The explosive growth in digital data and its growing role in real-time decision support motivate the design of high-performance database management systems (DBMSs). Meanwhile, slowdown in supply voltage scaling has stymied improvements in core performance and ushered an era of power-limited chips. These developments motivate the design of DBMS accelerators that (a) maximize utility by accelerating the dominant operations, and (b) provide flexibility in the choice of DBMS, data layout, and data types. We study data analytics workloads on contemporary in-memory databases and find hash index lookups to be the largest single contributor to the overall execution time. The critical path in hash index lookups consists of ALU-intensive key hashing followed by pointer chasing through a node list. Based on these observations, we introduce Widx, an on-chip accelerator for database hash index lookups, which achieves both high performance and flexibility by (1) decoupling key hashing from the list traversal, and (2) processing multiple keys in parallel on a set of programmable walker units. Widx reduces design cost and complexity through its tight integration with a conventional core, thus eliminating the need for a dedicated TLB and cache. An evaluation of Widx on a set of modern data analytics workloads (TPC-H, TPC-DS) using full-system simulation shows an average speedup of 3.1× over an aggressive OoO core on bulk hash table operations, while reducing the OoO core energy by 83%.

198 citations

Patent
09 Jun 2003
TL;DR: A display system includes an illumination source configured to produce visible and nonvisible radiation and to direct the visible and notvisible radiation along an optical path; and a modulator disposed in the optical path configured to modulate the visible radiation to generate a visible image, and to modify the nonvisible data stream as discussed by the authors.
Abstract: A display system includes an illumination source configured to produce visible and nonvisible radiation and to direct the visible and nonvisible radiation along an optical path; and a modulator disposed in the optical path configured to modulate the visible radiation to generate a visible image, and to modulate the nonvisible radiation to generate a nonvisible data stream.

198 citations

Patent
06 Dec 1996
TL;DR: A battery pack, adapter and integrated charging system for charging a battery pack of the type used in a portable electronic device such as a notebook computer, a cellular telephone, etc. as mentioned in this paper.
Abstract: A battery pack, adapter and integrated charging system for charging a battery pack of the type used in a portable electronic device such as a notebook computer, a cellular telephone, etc. The battery pack includes a battery coupled through a power converter to a secondary transformer winding. A communication link is provided to the adapter which includes control logic and a power selector. The adapter may be configured to provide DC or AC power to charge a portable electronic device and the processor of a portable electronic device may be used to control charging of an external battery pack.

198 citations


Authors

Showing all 34676 results

NameH-indexPapersCitations
Andrew White1491494113874
Stephen R. Forrest1481041111816
Rafi Ahmed14663393190
Leonidas J. Guibas12469179200
Chenming Hu119129657264
Robert E. Tarjan11440067305
Hong-Jiang Zhang11246149068
Ching-Ping Wong106112842835
Guillermo Sapiro10466770128
James R. Heath10342558548
Arun Majumdar10245952464
Luca Benini101145347862
R. Stanley Williams10060546448
David M. Blei98378111547
Wei-Ying Ma9746440914
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
202223
2021240
20201,028
20191,269
2018964