Abstract: A micro speaker assembly including a micro speaker having a top plate, a bottom plate parallel to the top plate, a magnet assembly coupled to one of the top plate or the bottom plate, a compliant member positioned between the magnet assembly and the top plate or the bottom plate, the compliant member operable to be displaced in response to an acoustic input, and a voice coil coupled to the compliant member. The assembly further including an optical sensor coupled to the micro speaker, the optical sensor having a light emitter and a light detector, the light emitter and the light detector being fixedly coupled to the top plate or the bottom plate, and the optical sensor being operable to produce a displacement signal corresponding to a displacement of the compliant member and a temperature signal corresponding to a temperature of the magnet assembly.

Abstract: The present invention provides a medical supply monitoring and tracking system (100). In one embodiment, the system (100) includes a medicine trolley (300). A storage compartment (312,314,316) of the medicine trolley (300) has two RFID antennae (340) aligned substantially orthogonal to each other for monitoring a RFID tag (360) on each medical supply (350). In another embodiment, the system (100) also includes a communication device (210) and a staff identification card (222). The communication device (210) includes a functional module, each relevant for a doctor (223), a nurse (225), a pharmacist (224), and so on.

Abstract: The present invention provides a storage shelf (312,314,316) in a RFID tracking system (100). In one embodiment, the storage shelf (312,314,316) is on a medical supply trolley (300). Each storage shelf (312,314,316) has two RFID antennae (340a, 340b) that are aligned substantially orthogonal to each other. Each RFID antenna (340) is tuned to a resonant frequency, and with a bandwidth below and above the resonant frequency. The bandwidth defines a Q factor such that the antenna (340) is insensitive to a conductor placed near the antenna (340).

Abstract: Apparatus and methods for regulating delivery of electrical energy to a lighting load are disclosed. An electrical waveform is received from a source of electrical energy. An integration value is generated based on a square of an amplitude of the received waveform. Electrical energy is delivered to the load until the integration value exceeds a threshold value. Thereafter, the delivery of electrical energy to the load is discontinued.

Abstract: A three-way conversion catalyst useful for the treatment of exhaust gas streams to accomplish the catalytic oxidation of carbon monoxide and hydrocarbons and the catalytic reduction of the oxides of nitrogen has a catalyst carrier such as cordierite coated with an oxygen reservoir layer, and a second layer of finely divided nickel needles obtained by reduction of Ni.sup.2+ in an autoclave and a platinum group metal.