Abstract: An impaired person care system which includes a reconfigurable powered wheelchair operating in conjunction with a segmented bed having a main bed section and multiple reconfigurable bed sections. The wheelchair has back, seat and leg sections configurable to an upright sitting position or a horizontal lying-down bed resting position. In the sitting position the wheelchair is positionable over a regular commode; in the lying-down position the wheelchair is positionable on the multiple reconfigurable bed sections and movable vertically in response to corresponding movement of the reconfigurable bed sections to the level of the main bed section. The wheelchair also has an opening in the seat section with allowing unobstructed passage of fecal waste from bowel movements when the wheelchair is positioned over the commode.

Abstract: An impaired person care system which includes a reconfigurable powered wheelchair operating in conjunction with a segmented bed having a main bed section and multiple reconfigurable bed sections. The wheelchair has back, seat and leg sections configurable to an upright sitting position or a horizontal lying-down bed resting position. In the sitting position the wheelchair is positionable over a regular commode; in the lying-down position the wheelchair is positionable on the multiple reconfigurable bed sections and movable vertically in response to corresponding movement of the reconfigurable bed sections to the level of the main bed section. The wheelchair also has an opening in the seat section with allowing unobstructed passage of fecal waste from bowel movements when the wheelchair is positioned over the commode.

Abstract: A voltage reference filter for a subscriber line interface circuit removes unwanted noise on a DC reference voltage sourced by a device, such as a codec, and employed by the subscriber line circuit as a differential mode voltage baseline. The DC reference voltage is coupled via a high pass filter to the sense amplifier. The filter blocks the DC component of the reference voltage and passes noise components to the sense amplifier. The reference port of an amplifier between the sense amplifier and a codec receives the same (noisy) reference voltage AC-coupled to the sense amplifier, and performs common mode rejection of noise components riding on the DC reference.

Abstract: A bandgap reference-based voltage and current generator has a distributed circuit architecture, to reduce the number of voltage dropping components between voltage supply rails containing bandgap voltage generator circuitry. Base current error compensation circuitry is incorporated into current mirror circuits of the generator to yield a composite current having a desired component, defined exclusively in accordance with the desired bandgap voltage, and a base error component containing the desired bandgap voltage, but modified by a second base current error. By differentially combining these two components, the multiple port output current mirror stage removes the base error component of the composite current, leaving only the desired bandgap-based component at each of plural precision output current ports.

Abstract: A diode coupling-based arrangement back-biases each of the semiconductor substrates of a plurality of integrated circuits at the maximum (e.g., most negative) DC voltage applied to any individual circuit, irrespective of a potential variation in applied DC voltages. Each semiconductor chip/substrate includes an auxiliary terminal to which each DC voltage terminal for that chip is diode-coupled. The auxiliary voltage terminal is connected to the underside biasing and thermal dissipation pad of the substrate. When multiple packages are mounted and conductively joined to a shared metallic dissipation region of a support substrate, all auxiliary voltage terminals will be connected in common, so as to back-bias each semiconductor substrate to the most maximum (e.g., most negative) of all applied DC voltages.

Abstract: A bandgap reference-based voltage and current generator has a distributed circuit architecture, to reduce the number of voltage dropping components between voltage supply rails containing bandgap voltage generator circuitry. Base current error compensation circuitry is incorporated into current mirror circuits of the generator to yield a composite current having a desired component, defined exclusively in accordance with the desired bandgap voltage, and a base error component containing the desired bandgap voltage, but modified by a second base current error. By differentially combining these two components, the multiple port output current mirror stage removes the base error component of the composite current, leaving only the desired bandgap-based component at each of plural precision output current ports.

Abstract: A diode coupling-based arrangement back-biases each of the semiconductor substrates of a plurality of integrated circuits at the maximum (e.g., most negative) DC voltage applied to any individual circuit, irrespective of a potential variation in applied DC voltages. Each semiconductor chip/substrate includes an auxiliary terminal to which each DC voltage terminal for that chip is diode-coupled. The auxiliary voltage terminal is connected to the underside biasing and thermal dissipation pad of the substrate. When multiple packages are mounted and conductively joined to a shared metallic dissipation region of a support substrate, all auxiliary voltage terminals will be connected in common, so as to back-bias each semiconductor substrate to the most maximum (e.g., most negative) of all applied DC voltages.

Abstract: A voltage reference filter for a subscriber line interface circuit removes unwanted noise on a DC reference voltage sourced by a device, such as a codec, and employed by the subscriber line circuit as a differential mode voltage baseline. The DC reference voltage is coupled via a high pass filter to the sense amplifier. The filter blocks the DC component of the reference voltage and passes noise components to the sense amplifier. The reference port of an amplifier between the sense amplifier and a codec receives the same (noisy) reference voltage AC-coupled to the sense amplifier, and performs common mode rejection of noise components riding on the DC reference.