Abstract: A switching power supply includes a source of DC voltage and a transformer having primary and secondary windings. A switching circuit is coupled between the DC voltage and the primary winding to provide alternating current to the primary winding. A rectifier circuit is coupled to the secondary winding to provide a DC output voltage. A controller circuit controls the switching circuit to modulate the alternating current provided to the primary winding. A circuit receives a first input signal having a magnitude which is determined by the DC output voltage and a second input signal having a magnitude which is determined by a selected position of a multiposition switch. An output of the circuit generates a feedback signal which is coupled to the controller circuit.

Abstract: An octagonal shaped monopole antenna is provided. The antenna includes a ground plane and a patch. The patch is generally perpendicular to and above the ground plane. A bottom edge of the patch is proximate the ground plane. A feed and short for the antenna extend from the ground plane to a side of the patch. Generally, the feed and short couple to the bottom edge of the patch.

Abstract: An antenna for a wireless device is provided. The antenna mounts on a substrate such as a printed circuit board. The antenna includes a carrier having sidewalls with inside surfaces defining an internal recess. A conductive trace resides on the carrier. The conductive trace having a first end and a second end opposite the first end with at least one lead extending from an end and extending the sidewall. The lead terminates in a hook that traversing the sidewall and has a portion extending along the inside surface of the internal recess. A locking clip is sized to fit in the internal recess and frictionally lock the portion between an outside surface of the locking clip and the inside surface of the internal recess such that the locking clip locks the portion, the at least one hook, the at least one lead, and the conductive trace in position on the carrier.

Abstract: A bi-directional boost circuit for power factor correction includes a power factor control circuit and a pair of diodes, a pair of inductors, and a pair of switches. A first diode, a second diode, a first inductor, a second inductor, a first switch, and a second switch convert the AC input voltage, rectify the AC input voltage, and output an intermediate DC voltage. The power factor control circuit receives the AC input voltage and receives the intermediate DC voltage. The power factor control circuit regulates the DC output voltage. Based on the AC input voltage and the intermediate DC output voltage, the power factor control circuit controls an inductor current waveform by driving the first switch and the second switch to create a substantially sinusoidal current as seen by the power source that is in phase with the AC input voltage.

Abstract: A programmable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A power converter with a fan assembly cools down a temperature of the power converter. The power converter with a fan assembly includes a housing, a plate, and a second plate. The housing includes a fan assembly (which is integral to the housing) to draw in air. The plate is coupled to the housing to create an air channel between the plate and the housing and the second plated is coupled to the housing to create a second air channel between the second plate and the housing. The fan assembly draws in air through one of the air channel or the second air channel and moves air out through the other of the air channel and the second air channel to cool down the temperature of the power adapter.

Abstract: A power supply system includes an adapter to receive power from a power source, and output a regulated output voltage (Vout). A tip receives Vout from the adapter, and output Vout to an electronic device. The tip includes active circuitry to adjust a programming voltage (Vprog). Vprog is fed back to the adapter to control a magnitude of Vout.

Abstract: A programmable AC/DC power converter receives a plurality of input voltages and outputs a single voltage from an input voltage system. A transformer receives the single voltage. One of the plurality of input voltages is provided at a center tap of a secondary winding of the transformer. A transformed voltage is output. A rectifier receives the transformed voltage and outputs a DC voltage. A buck regulator receives a DC voltage, creates a regulated voltage, and outputs the regulated voltage and a regulated current to a portable appliance. A error correction system receives a programming signal and regulated signals and verifies that the regulated signal to programming signal ratio is within an acceptable range.

Abstract: An antenna for a foldable wireless device is provided. The foldable wireless device and antenna include a first housing and a second housing pivotally connected. A printed circuit board associated with the wireless device comprises a first PCB in the first housing and a second PCB in the second housing. The first and second PCB function as first and second radiating plates respectively. A gap, generally aligned with the pivotal connection separates the first and second PCBs. A short is provided that traverses the gap and connects the first and second PCBs. Radio frequency power is connected to the first and second PCB to supply radio frequency power.

Abstract: In accordance with the principles of the present invention, a method and apparatus for filtered wireless communications is provided. The method provides a filtered wireless zone. Signaling channels normally serving a geographic vicinity are scanned, with the channel identity and the system identity of each signaling channel recorded. A transmitter-receiver is commanded to such channel. A signaling channel marker is radiated. A new signaling channel assignment message is sent, sending handsets to a new capture channel. An appropriate signal is radiated to keep the handsets locked to the new capture channel. The transmitter-receiver then ceases radiating on the first channel, and proceeds to the second external signaling channel previously recorded. The transmitter-receiver repeats this process for all the external signaling channels previously located.

Abstract: An open platform architecture and methods for shared resource access management are provided. A redirection module in kernel space receives requests for access to resources from applications in user space. The redirection module routes signals representative of the received requests to a device driver interface in user space. Components of the device driver interface include resource management modules and device drivers that correspond to available resources. The resource management modules generate queries to the device drivers regarding availability of the requested resources. Upon receipt of resource status information from the device drivers, components of the device driver interface generate schedules for granting access to the requested resources. Further, the device driver interface components control access to the resources in accordance with the generated schedules including issuing responses to the requesting applications and the device drivers of the requested resources.

Abstract: A power supply system includes an adapter to receive power from a power source, and output a regulated output voltage (Vout). A tip receives Vout from the adapter, and output Vout to an electronic device. The tip includes active circuitry to adjust a programming voltage (Vprog). Vprog is fed back to the adapter to control a magnitude of Vout.

Abstract: A cradle casing has a DC/DC adapter to receive DC power from a DC power source and generate a first DC power signal. A sleeve accepts an AC/DC adapter, and guides movement of the AC/DC adapter when the AC/DC adapter is inserted into the cradle casing. The AC/DC adapter is capable of receiving AC power from an AC power source and generating a second DC power signal. A circuit receives at least one of the first DC power signal and the second DC power signal and outputs a third DC power signal.

Abstract: A programmable AC/DC power converter receives a plurality of input voltages and outputs a single voltage from an input voltage system. A transformer receives the single voltage. One of the plurality of input voltages is provided at a center tap of a secondary winding of the transformer. A transformed voltage is output. A rectifier receives the transformed voltage and outputs a DC voltage. A buck regulator receives a DC voltage, creates a regulated voltage, and outputs the regulated voltage and a regulated current to a portable appliance. A error correction system receives a programming signal and regulated signals and verifies that the regulated signal to programming signal ratio is within an acceptable range.

Abstract: A wireless portable input device and a receiver of the same is disclosed. According to one aspect of the present invention, the receiver of the input device can be detached from the motherboard and stored within a receiving chamber of the input device when not in use. The receiver is rotatably mounted on the computer and is designed to be stored within the input device in a first space therewithin when not in use. With the buckling portion formed axially within a second space of the input device the receiver can be positioned therein so that the space occupation can be substantially reduced and also the receiver and the input device of the present invention can be easy assembled.

Abstract: Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.

Abstract: A planar inverted F antenna having a radiating patch and a carrier is described. The radiating patch includes a blank, a first connector and a second connector. The first connector is formed from the blank material and provides a cutout region within the periphery of the radiating patch.

Abstract: The present invention provides wireless devices where component parts are formed directly to the housing for the wireless device.

Abstract: An antenna having a radiating element comprising a metalized fabric is provided. The antenna including a radiating element with a feed connection attached to the radiating element. The radiating element being constructed from a metalized fabric including a core material and a metal material.