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Electronic Ballast with inverter protection circuit
An electronic ballast (10) comprising an AC-to-DC converter (100), an inverter (200), an output circuit (400), a high-voltage detection circuit (500), and a...
Field emission device having means for in situ feeding of hydrogen
A field emission device (100, 200) includes a cathode plate (110, 210), an anode plate (112, 212) spaced from the cathode plate (110, 210) to define an...
Sensor device having a pathway and a sealed cavity
A sensor (10,30) is formed that does not require a bonding process in an oxygen rich or vacuum ambient. In a first embodiment, a port (14), a channel (15) and an...
Complementary heterojunction semiconductor device
A complementary heterojunction semiconductor device (10) has a first resonant interband tunneling transistor (12) coupled to a second resonant interband...
Tire pressure monitoring system
Remote energy transmitting circuits 30, 35, 36, 37 sequentially transmit a first RF signal when activated by the controller 60. A remote unit 14 in the tire...
Method of etching a trench into a semiconductor substrate
Trench structures (12,32,35,46) are formed in single crystal silicon substrates (10,30) that have either a (110) or (112) orientation. A selective wet etch...
Method of manufacturing semiconductor device with reduced charge trapping
A semiconductor device (20) is fabricated by doping a dielectric layer (29) located over the surface of a semiconductor substrate (21). The dielectric layer (29)...
A foldable article comprises a sheet of material (20) having a first plurality of concertina folds (22) and a second plurality of concertina folds (24). The...
Method for polishing a semiconductor wafer using dynamic control
A polishing system (10) is used to polish a semiconductor wafer (16) in accordance with the present invention. Polishing system (10) includes a wafer carrier...
Automobile airbag system
An automobile airbag system for protecting human occupants of an automobile during an accident is provided. An airbag assembly comprises an airbag inflator...
Method for soldering
A method for soldering components to opposite sides of a receptive element includes the steps of applying a solder formulation to both sides of the receptive...
Hopper with cartridge opener
A hopper (20) with a bias member (21) for coacting with a catch (12) for a sliding door (11) on a cartridge (10). Catch (12) has two abutments (13,14) for...
Front section of a portable radio
Battery pack for a portable communication device
Case for portable communications equipment
Communication device and display blanking control method therefor
A method and apparatus control blanking of a display (106) in a communication device (100) such as a battery powered radiotelephone. The communication device...
Communication unit power up sequencing
A communications system (100) having a number of communications units (134) connected to the communications system (100) in which the communications units (134)...
Modulator with baseband to phase converter
A phase demodulator (101) is used for sensing the phase.sub.-- angle of a phasor represented by the I and Q signals by first producing the analog I and Q signals...
Electronic device with equalized audio accessory and method for same
An electronic device (110) provides equalization and/or compensation for a coupled audio accessory device (120). The audio accessory device (120) has a memory...
Repeater assisted channel hopping system and method therefor
A radio communication system (100) includes a repeater (111) that operates with a transceiver (132) on a channel hopping sequence. The repeater receives a...
Method of interleaving a convolutionally coded signal in a spread
spectrum communication system
A block interleaver (212) suitable for communication over fading channels with convolutionally coded signals as input is disclosed. The block interleaver (212)...
Semiconductor laser for package with power monitoring system
A semiconductor laser package and method of fabrication including a vertical cavity surface emitting laser and a power monitoring system, such as a photodetector...
Method and apparatus for error correction processing in a radio
A method (400) for error correction processing of a repeat message in a messaging system where each repeat message contains errors in different portions of the...
Method for performing a signal search in a wireless communication system
The method, which operates in a code division multiple access wireless communication system including a base site having a first and second antenna for receiving...
Cascaded integrator-comb interpolation filter
A cascaded integrator-comb (CIC) interpolation filter is included within a digital-to-analog converter (138) and includes two up-samplers (150, 164). The two...
Compact balun network of doubled-back sections
A balun network is provided having first and second conductor portions symmetric along a center line therebetween. A connecting conductor portion 130 couples...
Low-power operational amplifier having fast setting time and high
voltage gain suitable for use in sampled data...
An operational amplifier includes a differential amplifier including a first transistor (120) and a second transistor (122), a gain stage (125), a first folded...
High efficiency power amplifier
A high efficiency power amplifier 600 consists of a non-linear radio frequency (RF) Doherty power amplifier (67) and a linearization circuit, such as, for...
Low power precision voltage splitter
A voltage splitter circuit (100) that generates a one-half supply voltage includes a first switched operational transconductance amplifier (switched OTA) (120),...
Method for forming a dielectric layer using high pressure
A method for forming a dielectric layer on a surface of a substrate uses high pressure. A pressure vessel of a high pressure oxidation equipment is heated to a...
Method of passivating semiconductor devices and the passivated devices
A method of passivating semiconductor devices including the steps of providing a semiconductor device having a surface of semiconductor material to be...
Method for manufacturing a low dielectric constant inter-level
integrated circuit structure
An interconnect structure having a dielectric layer with low dielectric constant is formed within an integrated circuit. In one embodiment of the invention,...
Method of manufacturing an insulated gate semiconductor device having a
An insulated gate semiconductor device (10) having a gate structure (45) that includes a conductive spacer (32) and an extension region (46) extending from the...
Trench random access memory cell and method of formation
A method for forming a random access memory cell within four separate trench regions (106, 108, 110, and 112). One half of the memory cell has a first N-type...
Semiconductor chemical sensor device and method of forming a
thermocouple for a semiconductor chemical sensor...
A semiconductor chemical sensor device (2) comprises a sensitive layer (4) for detecting specific chemicals and a heater for heating the sensitive layer, which...
Splicing tool and method for joining a first tube and a second tube
According to an aspect of the present invention, the foregoing needs are addressed by a splicing tool for joining a first tube and a second tube, including a...
Housing for a portable telephone
Front, bottom and left side of a computer
Radio frequency communication device including a mirrored surface
A RF communication device (100, 200, 300) employs a mirrored surface (109, 209, 309). The mirrored surface (109, 209) contains a display area (108, 208) that may...
Apparatus and method for selecting a transmitter for directed message
A method and the corresponding messaging system of selecting a transmitter for directed message delivery set is a messaging system including a plurality of...
Apparatus and method for discontinuously operating a receiver
An apparatus for discontinuously operating a receiver (302) includes a receive data circuitry (304) and processor circuitry (306). The apparatus and receiver...
Method and system for distribution of wireless digital multimedia
signals in a cellular pattern
A system (200) and method (300) provide an efficient communication system for distributing digital multimedia/HDTV signals to multimedia units in a cellular...
Apparatus and method for identifying a failed subscriber unit in a
wireless communication system
An apparatus and method provides identification of a failed subscriber unit (102) in a wireless communication system (100). In a first embodiment, the subscriber...
Method and apparatus for rate determination in a communication system
A method of determining a rate associated with a received signal including the steps of detecting the received signal (40); decoding the received signal at a...
Apparatus and method for pattern adaptive offset restoration
An apparatus and method adaptable to desired offsets for determining an undesired offset of a signal having a maximum and a minimum state that includes:...
Method of and apparatus for generating a pseudorandom noise sequence
An augmenting circuit (153) augments an embedded PN sequence of 2.sup.N -1 chips generated by an N-bit LSSR (111) to provide an augmented PN sequence of 2.sup.N...
Method and apparatus for converting data streams in a cell based
A frame to cell converter (413) uses a process for converting a data transmission stream for transportation in a cell-based network (102). The frame to cell...
Method in a wireless code division multiple access communication system
for delivering a message to a mobile...
The method operates in a wireless code division multiple access (CDMA) communication system (10) which includes a fixed communication unit (114). The fixed...
Method and apparatus for mixing protocols in a radio messaging system
A method and apparatus allocates a first predetermined plurality of frame time slots (102) to a first protocol, and allocates a second predetermined plurality of...