Abstract: A method for receiving and quantizing a data set originating from collected data is provided. The data set has a plurality of dimensions defined by perpendicular axes, and includes a plurality of data points. Each data point has a data characteristic.

Abstract: In a channelized system having a plurality of channels, an input spectrum having a plurality of signals is received by a receiver (10). A first attenuation value (V1) is applied to a first variable gain device (12) and a second attenuation value (V2) is applied to a second variable gain device (14), wherein the first variable gain device (12) and the second variable gain device (14) are within a common signal path. The receiver (10) is tuned to a desired channel and a first power level is measured within the desired channel. The receiver (10) is selectively tuned to at least one additional channel and a second power level within the at least one additional channel is measured, independent of the first power level. Based on measuring the power levels, a first modified attenuation value is applied to the first variable gain device (12) and a second modified attenuation value is applied to the second variable gain device (14).

Abstract: A trench MOSFET device and method of making the same.

Abstract: A multiphase voltage controlled oscillator (e.g., a quadrature VCO) 100, which includes multiple voltage controllable transconductance phase drivers 102, 104, 106 and 108. The output of each voltage controllable transconductance phase driver 102, 104, 106, 108 supplies one of 4 oscillator phases and receives 2 of the 4 phases as inputs. Each of the voltage controllable transconductance phase drivers 102, 104, 106 and 108 corresponds to a pair of controllable transconductance inverting amplifiers 132, 134, 136, 138. The controllable transconductance inverting amplifiers may be a simple inverter 150 that includes N-type FET (NFET) 152 and P-type FET (PFET) 154. Transconductance is controlled in the simple inverter by raising or lowering supply voltage (Vdd) levels. A more complex controllable transconductance inverting amplifier may be used, replacing PFET 154 with series connected PFETs 164, 166. The gate of one PFET 166 is controlled by a bias control voltage VCON.

Abstract: An adaptive forward error correction technique based on noise bursts and the rate at which they occur is disclosed. The forward error correction parameters are determined using statistics describing the noise burst duration and period. The occurrence, duration and period of the noise burst are determined by the error vector magnitude calculated during the decoding process.

Abstract: A bi-directional transient voltage suppression device is provided. The device comprises: (a) a lower semiconductor layer of p-type conductivity; (b) an upper semiconductor layer of p-type conductivity; (c) a middle semiconductor layer of n-type conductivity adjacent to and disposed between the lower and upper layers such that lower and upper p-n junctions are formed; (d) a mesa trench extending through the upper layer, through the middle layer and through at least a portion of the lower layer, such that the mesa trench defines an active area for the device; and (e) an oxide layer covering at least portions of the walls of the mesa trench that correspond to the upper and lower junctions, such that the distance between the upper and lower junctions is increased at the walls. The integral of the net middle layer doping concentration of this device, when taken over the distance between the junctions, is such that breakdown, when it occurs, is punch through breakdown, rather than avalanche breakdown.

Abstract: An adapter (42) for connecting a telephone (52) to a telephone wire (40) has a subscriber line interface circuit (SLIC 113) with a jack for connecting a telephone to the SLIC, a line interface (110) for coupling to a telephone line, a signaling circuit (111) coupled to the line interface for receiving and providing subscriber line signaling on the telephone line, a codec (112) coupled to the SLIC, performing a voice coding/decoding function; and a timing circuit (202) for time multiplexing and demultiplexing of digitized voice signals between the SLIC and the line interface.

Abstract: A voltage regulator 100, 130 for isolating radio frequency circuits from on chip digital circuit originated noise and an integrated circuit chip including the voltage regulator. The voltage regulator 100, 130 includes regulator device (a PFET) 106 driven by a sense amplifier 110 to derive a regulator voltage 108 from a supply voltage 102. Another sense amplifier 114 senses changes in output load and adjusts current flow through a current shunt 120, 122 so that the current shunt 120, 122 shunts excess load current. The sense amplifier 110 driving the voltage regulator device 106 senses current flow through the current shunt 120, 122 and adjusts the current supplied by the regulator device 106 to reduce excess current. The current shunt 120, 122 is a series connected PFET 120 and NFET diode 122, with the gate of the PFET 120 driven to control current flow.

Abstract: The method for transmitting a communication signal comprising a plurality of units of information includes transmitting the plurality of units of information via a predetermined number of channel resources; determining a number of the plurality of units remaining in at least a portion of the communication signal; based on the predetermined number of channel resources, adjusting the number of the plurality of units remaining to produce an adjusted number of units remaining; and transmitting the adjusted number of units remaining to the wireless communication system.

Abstract: An IP packet (210) is retrieved having a header and a payload. The header of the IP packet is compressed. The payload is appended to the compressed header to create a compressed IP packet. A multi-protocol label switch (MPLS) virtual circuit is established through a plurality of IP routers terminating at a destination of the IP packet. The compressed IP packet is converted into a MPLS packet (230). The MPLS packet (230) is transmitted through the MPLS virtual circuit. The MPLS packet is re-converted into the compressed IP packet at the destination. The compressed IP packet is decompressed at the destination (170).

Abstract: A telephony system having automatic timing adjustment for diverse routing of HFC systems has a signal stream routing through a signal line loop between a head-end and at least one communication unit. If a fault occurs within the signal line loop, recognized by the head-end when a short uplink burst from the communication unit does not align within a predetermined timing window, the head-end will cycle through predetermined delay parameters corresponding to various alternate signal line loops made up of redundant signal lines. Once the predetermined delay parameter corresponding to the current alternate signal line loop is determined, normal operation of the system resumes.

Abstract: This invention relates to a method of estimating a characteristic of a signal such as a time of arrival or a transmitter identity in particular in a cellular communication system. Most known techniques have limited performance as they rely on limited amounts of known data. The method of the invention comprise a first step (201) of receiving the signal at a subscriber unit. In a second step (203) the subscriber unit receives assistance data from the fixed network and in a third step (205) an expected signal is derived in response to this assistance data. For GSM the assistance data can be a frame number and a BSIC permitting an entire expected SCH burst to be derived. In a fourth (207) step the signal characteristic is determined by correlation of the received signal and the expected signal. The invention is particularly applicable to location determination in a GSM communication system.

Abstract: An improved cooling fan (12) fan for cooling an electronic component includes a rotor (26) rotatably mounted in a housing (18) and having a plurality of fan blades (28). The housing (18) includes a first end (20), a second end (24), and a passage (24) interconnecting the first end and the second end to define an air flow path (25) therebetween. An entry port (16) is defined by an upstream portion of the housing (18) generally adjacent the housing first end (20), with the entry port (16) having a cross-sectional area greater than a cross-sectional area of the passage (24). The entry port (16) and the passage (24) being separated by a transition zone (30), with the entry port (16) and the transition zone (30) cooperating to define an abrupt step (36). The abrupt step (36) is adapted to at least partially affect the flow of air flowing along the flow path (25), thereby reducing the ambient noise level of the fan.

Abstract: A method and apparatus for monitoring and controlling temperatures at a semiconductor circuit (22) by an array (32) of thermoelectric cooler cells (34) which are disposed proximate the semiconductor circuit (22). At least one thermoelectric cooler (38) is located at the individual thermoelectric cooler cells (34) for removing and adding heat from cell areas associated with the thermoelectric coolers. A memory device (50) is associated with the cooler cells (34) and stores operational settings for the cooler cells. A controller (28) is coupled with the thermoelectric cooler cells (34) to individually control the operational settings for the cooler cells in the array (32).