摘要:
A power supply comprises transistors (Q 1 ,Q 2 ,Q 3 ) whose conduction paths are connected in series and whose control terminals receive a reference voltage (V ref ). The common terminal at one end of the series-connected conduction paths provides a regulator output whereas output terminals of the transistors are connected to charge storage capacitors (C 1 ,C 2 ,C 3 ), which are charged by respective power generators (31,32,33) for scavenging energy from the environment. The transistors begin conducting in sequence so that the storage capacitors begin contributing sequentially to the output current as each transistor conducts in sequence. The capacitors are charged up when they are not contributing to the output current.
摘要:
A body implant antenna, comprises an electrically conductive electrode (2) formed on the surface of an enclosure (1) filled with a fluid (5) having a relatively permittivity greater than 10. The fluid is substantially electrically insulating and forms a substrate of the conductive electrode (2). Antenna size may therefore be reduced while permitting a relatively efficient antenna to be provided.
摘要:
A digital television converter (1) is provided, for example for performing all of the functions of a set top box for receiving digital terrestrial or satellite television broadcast signals. The converter (1) comprises a SCART connector (2) for mating with a mating connector (28) on a television apparatus, such as a television receiver (21) or a VCR (22), which is incapable of reception of digital television broadcasts. This connection provides electrical contact with the apparatus (21) and provides mechanical support for the converter (1). The converter also comprises a tuner (12) which selects and demodulates a television channel for reception and supplies to the connector (2) signals in a form suitable for use by the television apparatus (21). A connector rear housing (3) completes the enclosure for the converter (1) containing the tuner (12).
摘要:
A method of coating contact holes in MEMS and micro-machining applications comprises: providing an insulating layer above an integrated circuit; providing a resist layer above the insulating layer; patterning and developing the resist layer in order to form at least one contact aperture in the resist layer; isotropically etching the insulating layer using the resist layer as a mask, so that a contact hole is formed in the insulating layer; and coating the walls of said contact hole with a layer of metal.
摘要:
A system is provided for transferring data from a first network, which is packet based, to a second network, the system comprising: a physical layer input device, an input FIFO, a DMA controller for transferring data between addresses, an output FIFO, and a physical layer output device, wherein the physical layer input device places beginning and end markers around packets in the input FIFO, and the DMA controller monitors the data which it transfers, and transfers data between said beginning and end markers, and ceases a transfer when an end of packet marker is reached.
摘要:
A reticle for use in a photolithography process for exposing a photoresist layer in the production of a component which is formed from a plurality of adjacent exposed areas, comprises: an exposure aperture adapted to allow light to pass through the reticle; a patterned area within said exposure aperture which defines at least part of the functional design of the component; and one or more "stitching" structures located close to one or more of the edges of the exposure aperture, said "stitching" structures being arranged to create "stitching" marks on the photoresist, which can be used to determine whether said adjacent exposed areas have been accurately positioned.