Abstract: Described are chairs having a seat with a sitting location above the floor, a base that sits on a floor, a lift connecting the seat and the base, the lift capable of moving the seat up and down from the sitting location to a lower location at the floor, and a control system operating the lift. The control system allows an occupant of the chair to move the seat between its sitting location and the lower location at the floor to enable the occupant to pick up or place an item on the floor while sitting in the chair and thereafter to move the seat upwardly.

Abstract: A method and device for compensating sensorineural hearing loss in a manner that allows dysfunction of the inner and outer hair cells to be separately compensated is described. The disclosed techniques involve providing separately adjustable compression pathways for the received sound.

Abstract: Disclosed herein, among other things, are systems and methods for detection of special environments for hearing assistance devices. One aspect of the present subject matter includes a method of operating a hearing assistance device for a user. A signal is received from a mobile device, such as a cellular telephone, representative of an environmental parameter sensed by the mobile device. In various embodiments, an acoustic environment about the mobile device is identified based on the received signal using a signal processor. An operational mode of the hearing assistance device is adjusted using the signal processor based on the identified acoustic environment, according to various embodiments.

Abstract: A method and device for compensating sensorineural hearing loss in a manner that allows dysfunction of the inner and outer hair cells to be separately compensated is described. The disclosed techniques involve providing separately adjustable compression pathways for the received sound.

Abstract: A method and device for compensating sensorineural hearing loss in a manner that allows dysfunction of the inner and outer hair cells to be separately compensated is described. The disclosed techniques involve providing separately adjustable compression pathways for the received sound.

Abstract: The invention relates to a method for controlling the access to at least one communications device (NE) by means of at least one additional communications device (NMS1, NMS2) in a communications network. According to said method, when the aforementioned communications device or devices (NE) is or are accessed, information representing the additional communications device or devices (NMS1, NMS2), such as e.g. the IP address, is recorded. Additional access is then controlled using said information. The invention is characterised in that only certain, predefinable communications devices (NMS1, NMS2) with access can access part of the information stored in the communications device(s) (NE) during a specific time period.

Abstract: A hearing aid circuit using an averaging detector and a plurality of time constants to produce a compression control signal to control the gain of a compression amplifier which compresses an input signal when the averaging detector signal exceeds a predetermined threshold. The compression control signal has an attack and release time. The release time of the compression control signal is proportional to the duration of time during which the averaging signal's amplitude exceeds the predetermined threshold level. The release has a variable recovery rate. The recovery rate is relatively fast during an initial portion of the release time and relatively slower during the remaining portion of the release time. The hearing aid circuit may also use a volume control to adjust the gain of the signal produced by the compression amplifier without adjusting the gain of the signal produced by a linear amplifier to provide volume control for soft sounds independent of loud sounds.

Abstract: An electroacoustic device such as a hearing aid having a battery, microphone, speaker, a preamplifier, a voltage regulator and power amplifier. The power amplifier includes identically configured output and bridge stages connected to opposite sides of the speaker, the output signals from the output stage being connected through a blocking capacitor to the input of the bridge stage. The output/bridge stage circuit includes an interface stage and two current gain stages. The interface stage converts voltage signals to current signals with a pair of outputs respectively connected to the two like-configured current gain stages. Each current gain stage includes two successive sections, each having a pair of transistors, one of which is configured as a diode connected in series with a resistor to shunt current from the base of the other transistor.

Abstract: An ultrasonic sensor for non-invasive detection of air bubbles in a liquid flowing through a tube comprises two half-housings capable of being assembled together and two mutually opposed ultrasonic transducers, one installed in each of the half-housings. For acoustic coupling of the tube to the two mutually opposed ultrasonic transducers, each half-housing contains a chamber closed off by a flexible membrane and filled with a fluid highly transmissive of sound. The fluid displaced by the tube inserted between the two half-housings forces the membrane up in the form of a bulge on either side of the tube. In this way, an excellent contact is obtained between the chamber filled with sound-transmissive fluid and the tube. The membrane may be embedded into the side walls of the half-housings and cylindrically arched along the same.

Abstract: A motion picture camera has a rotary shutter driven by a DC motor which is supplied from a battery. The camera also has an arrangement for making light markings for identification purposes on the film in the camera. This arrangement includes a light-emitting diode and a capacitor which is charged by the battery and discharges across the diode. The electrical circuitry is such that the capacitor is connected to the battery only when the motor is disconnected therefrom; inversely, when the motor is to be connected to the battery in order to operate the shutter (and also to advance the film), the capacitor is first disconnected from the battery before the motor is connected to it and then discharges across the diode. The circuit also suppresses afterglowing of the diode.

Abstract: The reproducing apparatus, such as a motion-picture film projector, stops recording medium transport in response to interrupt-transport frame markings on the recording medium and reproduces the thusly marked image frames as still images. Interrupt-transport frame markings are provided at the terminal frame of each motion-picture scene on the recording medium, or at each still-shot image frame on the recording medium, or both. The user of the reproducing apparatus can select automatic reproduction of motion-picture scenes interspersed with automatic still reproduction of still shots, and can additionally select automatic still reproduction of the terminal frame of each motion-picture scene.

Abstract: The user of a motion-picture camera selects between motion-picture and single-exposure operation, and presses a release member to initiate shooting, letting go of it to terminate motion-picture shooting. Each time the user lets go of the release member, an internal device provides an interrupt-transport marking alongside the just exposed film frame, or phase shifted relative thereto. Alternatively, the interrupt-transport marking is provided the next time the user presses the release member. In this way, the terminal frame of each motion-picture scene, and each and every one of the interspersed single-exposure shots, is provided with an interrupt-transport frame marking. Thus, if the film is run through a reproducing apparatus provided with a marking detector, detection of each interrupt-transport marking during motion-picture reproduction causes the terminal frame of each motion-picture scene, and also each one of the still shots, to be persistently reproduced as a still image.