Abstract: A refreshable tactile reader apparatus for Braille text and graphics, utilizing a plurality of compressible tactile pins that can absorb strong downward forces. Such strong forces transmitted through tactile pins can damage pin actuation mechanisms. The physical enclosure of the reader provides open channels that allow the apparatus to be more easily cleaned than prior art enablements.

Abstract: An individual that is speech impaired, such as a patient in a dentist's office, is provided with means to communicate with a service provider, such as a dentist, without the individual using their own voice. In one embodiment, a computing system initiates display of user interfaces on a display device that is visible to the speech impaired individual. The speech impaired individual may then select text phrases displayed on the display device using an input device, such as a wireless remote control. The communication systems selects one or more audio files that correspond with the selected text phrases and plays the audio file(s) so that the dentist hears the audible representation of the selected text phrase, such as via a headset that is worn by the dentist. In some embodiments, the patient is further able to select one or more educational and/or entertainment media items via the user interface.

Abstract: A door alarm system and a door lock assembly having an interior rose having a request to exit (REX) switch. The alarm system generates an open door alarm when a door into a secured area is open unless the REX switch generates a REX signal indicating that the door was opened by someone on the inside of the secured area. Mechanical isolation in the door lock assembly prevents a forcing movement on the outside of the door from causing a false generation of the REX signal.

Abstract: An intrusion alarm system and method is provided which includes one or more sound pulse transmitters that are triggered upon the opening of an entryway, such as a door or window, to produce a high-intensity sound pulse having a decibel level above a predetermined minimum. For example, each transmitter may comprise a percussive photoflash unit in combination with a pyrotechnic device which responds to the radiant output of the fired photoflash unit to emit the intense sound pulse. A centralized detector responds to the sound pulse above a predetermined threshold level to produce an alarm signal. Preferably, the detector comprises an electroacoustical transducer arrangement which provides the dual functions of both sound pulse detection and generation of an audible alarm.