TITLE

Tactile objects based on an amplitude disturbed diffraction pattern method

AUTHOR(S)
Liu, Yuan; Nikolovski, Jean-Pierre; Mechbal, Nazih; Hafez, Moustapha; Vergé, Michel
PUB. DATE
December 2009
SOURCE
Applied Physics Letters;12/21/2009, Vol. 95 Issue 25, p251904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Tactile sensing is becoming widely used in human-computer interfaces. Recent advances in acoustic approaches demonstrated the possibilities to transform ordinary solid objects into interactive interfaces. This letter proposes a static finger contact localization process using an amplitude disturbed diffraction pattern method. The localization method is based on the following physical phenomenon: a finger contact modifies the energy distribution of acoustic wave in a solid; these variations depend on the wave frequency and the contact position. The presented method first consists of exciting the object with an acoustic signal with plural frequency components. In a second step, a measured acoustic signal is compared with prerecorded values to deduce the contact position. This position is then used for human-machine interaction (e.g., finger tracking on computer screen). The selection of excitation signals is discussed and a frequency choice criterion based on contrast value is proposed. Tests on a sandwich plate (liquid crystal display screen) prove the simplicity and easiness to apply the process in various solids.
ACCESSION #
47132839

 

Related Articles

  • Microcontroller drives LCD with just one wire. Benabadji, Noureddine // EDN;12/3/2007, Vol. 52 Issue 25, p104 

    The article presents a novel approach in saving or expanding input/output (I/O) pins using a microcontroller. It illustrates a circuit that proves useful for any pin-limited embedded system that must interface with an HD44780-compatible display through a one-wire serial link using an...

  • Phone design hinges on serial links.  // EDN;11/11/2004 Supplement2, Vol. 49, p30 

    The article focuses on the incorporation of serial interface technology in the design of cellular phones in Japan. With cell phones based on the clamshell design, the liquid crystal display (LCD) panel and camera module is placed in the upper chassis, and the lower chassis contains the...

  • LCD snaps VGA images at 30Hz.  // Electronics Weekly;8/16/2006, Issue 2254, p5 

    The article focuses on the development of the first 75mm LCD, compatible with the interface standard used for digital still cameras digital still cameras by Samsung Electronics Co. Ltd. According to the firm, the ITU-R601 interface used by digital camera makers is incompatible with LCDs as they...

  • Stepper-drive label applicator.  // Packaging Digest;Dec2005, Vol. 42 Issue 12, p56 

    The article presents information on stepper-drive label applicator which is designed for high-speed applications. It features a remote keypad control system and self-teach operation for facilitating setup. The stripper plate is fully adjustable and can be extended away from the applicator for...

  • THE EFFECTS OF MULTITASKING ON INDIVIDUAL'S TASK PERFORMANCE. Shao, Dale H.; Shao, Lawrence P. // International Journal of Business Strategy;Mar2012, Vol. 12 Issue 1, p75 

    Multitasking occurs when an individual works on several tasks or uses several electronics devices, simultaneously. Multitasking has become a common part of life for most individuals. With the advent of smart phones, bluetooth technology, IPADs, LCD televisions, etc., and the communication...

  • Onset detection of solid-state phase transition in estrogen-like chemical via terahertz transmission spectroscopy. Quema, Alex V.; Goto, Masahiro; Sakai, Masahiro; Ouenzerfi, Riadh El; Takahashi, Hiroshi; Murakami, Hidetoshi; Ono, Shingo; Sarukura, Nobuhiko; Janairo, Gerardo // Applied Physics Letters;10/25/2004, Vol. 85 Issue 17, p3914 

    Solid-state phase transition onset in an endocrine-disrupting estrogen-like chemical (1,4-naphthol) is detected using terahertz transmission spectroscopy. The appearance of two absorption peaks and the sudden upsurge of terahertz-radiation power at 210 K indicate the onset of the solid-state...

  • Lattice parameters of CO2-Kr cryoalloys. Danchuk, V. V.; Solodovnik, A. A.; Strzhemechnyĭ, M. A. // Low Temperature Physics;Mar2010, Vol. 36 Issue 3, p254 

    The structure of the cryoalloys CO2-Kr has been studied in the entire range of relative concentrations by means of transmission electron diffraction. Gaseous samples were deposited from a tank at room temperature onto substrates cooled to 30 K. The filling channel was thermally insulated from...

  • Ab initio determination of solid-state nanostructure. Juhás, P.; Cherba, D. M.; Duxbury, P. M.; Punch, W. F.; Billinge, S. J. L. // Nature;3/30/2006, Vol. 440 Issue 7084, p655 

    Advances in materials science and molecular biology followed rapidly from the ability to characterize atomic structure using single crystals. Structure determination is more difficult if single crystals are not available. Many complex inorganic materials that are of interest in nanotechnology...

  • LCD Backlights, Light Sources For Microdisplays Drive Market Growth For Solid-State Lighting. Allen, Kimberly // Electronic Design;4/27/2006, Vol. 54 Issue 9, p25 

    The article reports that liquid crystal display backlights and light sources for microdisplays are fueling market growth for solid state and emergent lighting technologies for backlights and projection sources. Solid state technologies save on power and cost, enhance displays, and diminish the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics