An optical virtual touch pad system wherein reflective optics are used to superimpose a virtual image of a television screen display onto a touch-sensitive digitizing surface being operatively contacted by a user-controlled contact member. Alternatively, the system uses reflective optics to superimpose an uninverted virtual image of the digitizing surface and the contact member operating thereon onto the surface of the display. The system thereby, for example, can be used as a user interface to control interactive content on a home television.
An acoustic touch panel or "touch screen" utilizes acoustic waves within a sensor substrate to determine the position of touch. The substrate is made of a temperable glass having an attenuation coefficient of less than or equal to about 0.6 dB/cm as determined at the substrate surface for 5.53 MHz Rayleigh waves as measured by the slope of a plot of amplitude versus distance for a signal through a pair of facing 0.5-inch wide wedge transducers mounted on a sample of the glass type under test having sufficient thickness to support Rayleigh wave propagation. An acoustic touch panel with a tempered low-acoustic-loss glass substrate. This makes possible large tempered acoustic touch panels. A glass substrate of the touch sensor comprises SiO.sub.2 as the main component with a total content of Na.sub.2 O, CaO and MgO of 20% by weight or less and a total content of Al.sub.2 O.sub.3, ZrO.sub.2, TiO.sub.2, B.sub.2 O.sub.3, Y.sub.2 O.sub.3, SnO.sub.2, PbO.sub.2, In.sub.2 O.sub.3 and K.sub.2 O of 5% by weight or more.
Remote control systems that can distinguish predetermined light sources from stray light sources, e.g., environmental light sources and/or reflections are provided. The predetermined light sources can be disposed in asymmetric substantially linear or two-dimensional patterns. The predetermined light sources also can output waveforms modulated in accordance with one or more signature modulation characteristics. The predetermined light sources also can output light at different signature wavelengths.
A system including environmental controls that at least enhance the experience of giving or viewing a presentation. Controls are available which enable the presenter to have direct control of the presentation environment. Presenters can also practice a presentation before actually giving it, transmit a presentation, either pre-recorded or live, from a remote location(s), record a presentation for later distribution, view a pre-recorded or live presentation from a remote location(s), or upload a video or audio message to a website. The system also includes a stylus, a remote control, and an interface device to enable a handheld computing device to be used as a remote, or even as the source for presentations themselves. The system includes a combination of an Integrated Information Presentation Device (PowerPodium), an Integrated Presentation Environment Assembly with Controls (Presentation Booth), an Information Display Device System (PDA Device), a stylus and a remote control.
