57results about How to "Convenient power control" patented technology

This invention describes a method for a new methodology for improving a high speed downlink shared channel (HS-DSCH) transport format allocation in communication systems (e.g., mobile phone networks) using, e.g., a network element such as a node B. As CQI (channel quality indicator) reports made by a user terminal) are time stamped in a sense that they correspond to a given reference period, the Node B is able to determine what time instant in the past the given CQI report corresponds to. As the Node B scheduler knows a history of HS-DSCH (high speed downlink shared channel) transmission, it is able to determine how much HS-DSCH power was transmitted during the time corresponding to the received CQI report. Based on this information, it determines the bias required to the CQI reports received at different times to improve an accuracy of the allocated HS-DSCH transport format.

The present invention is an Always On, Hands-free, Speech Activated, Power-optimized Wireless Communications Device with associated base. The unique value of the device is that a person can use the device at any time, 24×7, with hands-free operation. People can wear it 24×7 on their body either around their neck or on their wrist or wherever it best meets their needs. Speech activation provides greater convenience for the person in using the wireless communications device, and at the same time, it allows the microcontroller greater control of power consuming resources. The wireless communications device may host simple, low power applications. In addition, applications will reside in the base, and in an application (either voice or data) server that is accessed by the wireless communications base.

A method of controlling an electric machine that includes sequentially exciting and freewheeling a winding of the electric machine. The winding is excited by an excitation voltage and is freewheeled over a freewheel angle. The method then includes varying the freewheel angle in response to changes in the excitation voltage. Additionally, a control system for an electric machine, and a product incorporating the control system and electric machine.

A lateral short-channel DMOS according to the present invention is a lateral short-channel DMOS in which an N⁻-type semiconductor region is formed, with the surface of the N⁻-type semiconductor region becoming almost completely depleted during reverse bias. The lateral short-channel DMOS 10A according to the present invention includes an N⁻-type epitaxial layer 110 that is formed in one surface of a P⁻-type semiconductor substrate 108, a P-type well 114 that is formed in the surface of the N⁻-type epitaxial layer 110 and includes a channel forming region C, an N⁺-type source region 116 that is formed in a surface of the P-type well 114, an N⁺-type drain region 118 formed in a surface of the N⁻-type epitaxial layer 110, and a gate electrode 122 formed via a gate insulating film 120 in at least an upper part of the channel forming region C out of a region from the N⁺-type source region 116 to the N⁺-type drain region 118. The lateral short-channel DMOS 10A according to the present invention also includes an N⁺-type well 140 that is formed in a surface of the N-type epitaxial layer 110 and includes a higher concentration of N-type dopant than the N⁻-type epitaxial layer 110 and a lower concentration of N-type dopant than the N⁺-type drain region 118, with the N⁺-type drain region 118 being formed in a surface of this N⁺-type well 140. As described above, according to the present invention, ON resistance is reduced while maintaining high breakdown characteristics, so that it is possible to provide a lateral short-channel DMOS with high breakdown characteristics and superior current driving characteristics.

A radio and a transmit power control method in a radio system supporting a use of coding blocks in communication between a base station and user equipment is disclosed. The method comprises producing a measured SIR (signal-to-interference ratio) value and compares the measured SIR value with the target SIR value. Accordingly, the method also comprises determining the quality of the received coding blocks. The method also comprising storing samples of the differences between the measured SIR value and the target SIR value. The method also comprises adjusting the target SIR value based on the values of the samples of differences between the measured SIR value and the target SIR value and the quality of the received coding block. The method also comprises providing a transmit power control command based on the adjusted target SIR value to the user equipment.

A vehicle power control that includes a throttle mounting portion and a throttle that is movably mounted to the throttle mounting portion and configured for manipulation and operation by a rider. The power control also includes a sensor in contactless association with at least one of the throttle and throttle mounting portion. The sensor is configured for sensing a position of the throttle with respect to the mounting portion, in the contactless association, and generating a signal based on the sensed position for controlling motive power of a vehicle.

A power transmitter (101) of a wireless power transfer system comprises a resonance including a transmitter coil (103) for generating a power transfer signal for wirelessly transferring power to a power receiver (105). Further, a driver (1303) generates a drive signal for the resonance circuit (201) and a message receiver (1305) is arranged to receive messages from the power receiver (105). A power loop controller (1307) implements a power control loop by adapting the power of the drive signal in response to power control messages received from the power receiver (105). However, the regulation is subject to a constraint of at least one of a current or voltage of the resonance circuit and a power of the drive signal being below a maximum limit. Further, the power transmitter (101) comprises an adapter (1309) which adapts the maximum limit in response to a load indication indicative of a loading of the power transfer signal by the power receiver (105).

A vehicle power control that includes a throttle mounting portion and a throttle that is movably mounted to the throttle mounting portion and configured for manipulation and operation by a rider. The power control also includes a sensor in contactless association with at least one of the throttle and throttle mounting portion. The sensor is configured for sensing a position of the throttle with respect to the mounting portion, in the contactless association, and generating a signal based on the sensed position for controlling motive power of a vehicle.

A reception unit measures a reception power level of a reference signal which is received from a base station apparatus BS. A reception signal processing unit acquires information indicative of a transmission power level of the reference signal. A control unit finds a path loss on the basis of the reception power level and this information. The control unit determines, on the basis of the path loss, a transmission power level of that one of two transmission frequency bands, which is closer to a frequency band with respect to which the pass loss has been measured. The control unit determines a transmission power level of the other transmission frequency band, which is farther from the frequency band with respect to which the pass loss has been measured, by correcting the transmission power level on the basis of a correction value based on a difference in frequency.

To set an optimal transmission power control interval such that a base station apparatus properly receives signals from a mobile station, while exploiting fast scheduling and fast AMC, in this closed-loop transmission power control method, reception SINR and average interference level are measured in a signal received in uplink, a time period for averaging reception quality is determined corresponding to an overlapped size of a dynamic range of a base station apparatus that is a region of overlapping a first reception-allowable range depend on reception capability of the base station apparatus, with a second reception-allowable range, varying corresponding to the interference level, depend on the number of a modulation and coding scheme set, each set achieving required throughput, the reception SINR is averaged using the determined time period, and a TPC command indicative of uplink transmission power to be controlled in a terminal apparatus is generated using a difference value between the averaged reception SINR and target reception SINR, and is transmitted in downlink.

A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure is repetitively estimated and control commands generated from the quality measure and a quality measure reference value, which in an outer power control loop is adjusted in dependence on a performance level calculated for signals received during a time interval. A first value is adjusted in dependence on a performance level for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value is adjusted in dependence on a performance level for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals.

There is disclosed a battery pack, which has a plate-shaped resin-formed body to divide an internal space of the battery pack into at least two spaces in a thickness direction thereof, so that a battery is received in a first internal space, while a wiring substrate having a control circuit packaged thereon is placed in a second internal space, thereby allowing the battery pack to hold an input/output circuit or the like of a memory card securely in a limited space in the battery pack, while ensuring that a sufficient insulation is provided to the battery, when the battery pack is used for PDA'S, for instance.

In an optical disc device comprising: a pickup 3 having a laser diode and generating a laser beam for recording onto an optical disc 1; a disc motor 2 that drives the rotation of an optical disc mounted thereon; a stepping motor that moves the pickup in the radial direction of the disc; and a system controller 6 that supplies drive current to the laser diode, and that controls the rotational speed of the disc motor and the position of the pickup by means of the stepping motor; the pickup has a temperature sensor 31 in its interior and system controller 6 restricts the drive current supplied to the laser diode in accordance with a detected temperature during data recording and controls the rotational speed of the disc motor, based on the detected temperature and the data recording properties of the optical disc which have been determined.

A ballast that comprises a DC-DC converter, a DC-AC converter, a lighting voltage generator and a control unit. A difference in voltage between input terminals of the lighting voltage generator is generated by a voltage step-up circuit of the “self-boosting” type from a DC voltage supplied by the DC-DC converter and an auxiliary voltage source V0. The ballast makes it possible to obtain a voltage level V2 that is equal to twice a first voltage level V1 increased by the auxiliary voltage V0.

An electrical alternating current power signal and a circuit and method for generating the same in which the alternating current signal is dropped once at a non-zero crossing point in every 540 plus N degrees, where N is a non-negative number. This manner of controlling power to a device enables wide ranges of power control while generating acceptable levels of power line harmonics and while conforming to existing international regulations governing voltage variations.