Patent application number | Description | Published |
20080232268 | LMS Adaptive Filter for Digital Cancellation of Second Order Inter-Modulation Due to Transmitter Leakage - A transmit signal second-order inter-modulation (IM | 09-25-2008 |
20080233994 | Digital Modulator and Method for Initiating Ramp Power Transitions in a Mobile Handset Transmitter - A digital modulator for a portable handset using 8PSK or EDGE modulation with a direct launch transmitter is used to controllably adjust the transmit power of the portable handset. The digital modulator includes a controller coupled between a memory and an accumulator. The controller is responsive to an indication that the transmit power should be transitioned. The controller temporarily alters the data transferred from the memory to the accumulator during transitions of the transmit power level. | 09-25-2008 |
20090219100 | VOLTAGE-CONTROLLED OSCILLATOR GAIN CALIBRATION FOR TWO-POINT MODULATION IN A PHASE-LOCKED LOOP - A phase-locked loop (PLL) is arranged to receive high-pass data at a first input and low-pass data at a second input. A first digital input is coupled to a primary path through a digital-to-analog converter (DAC) and a second digital input is coupled to a feedback path of the PLL. The controller provides the first input and the second input during a calibration procedure. The controller adjusts first and second control inputs in an attempt to keep the input voltage to a voltage-controlled oscillator (VCO) in the PLL constant while determining the gain of the VCO in Hz/LSB. | 09-03-2009 |
20100172450 | Circuits, Systems, and Methods for Managing Automatic Gain Control in Quadrature Signal Paths of a Receiver - A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine. | 07-08-2010 |
20110021237 | Closed-Loop Adaptive Power Control For Adjusting Bandwidth In A Mobile Handset Transmitter - A mobile handset is arranged with an adaptive power controller to controllably adjust transmit power. The adaptive power controller is coupled to a power amplifier module to form a closed feedback loop. The adaptive power control module includes a first shifter, a first sealer, an accumulator and a hold element. The first shifter and first sealer receive respective bandwidth control signals and an error signal. The first shifter and first sealer generate a modified error signal that is forwarded to and filtered by the accumulator and the hold element to generate a power control signal. The power control signal, which is generated the radio frequency subsystem of the handset can quickly and accurately track rapid changes in transmit power. | 01-27-2011 |
20110116403 | LMS Adaptive Filter for Digital Cancellation of Second Order Inter-Modulation Due to Transmitter Leakage - A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset. | 05-19-2011 |
20120134402 | CIRCUITS, SYSTEMS, AND METHODS FOR MANAGING AUTOMATIC GAIN CONTROL IN QUADRATURE SIGNAL PATHS OF A RECEIVER - A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine. | 05-31-2012 |
20120250786 | DIGITAL MODULATOR AND METHOD FOR INITIATING RAMP POWER TRANSITIONS IN A MOBILE HANDSET TRANSMITTER - A digital modulator for a portable handset using 8PSK or EDGE modulation with a direct launch transmitter is used to controllably adjust the transmit power of the portable handset. The digital modulator includes a controller coupled between a memory and an accumulator. The controller is responsive to an indication that the transmit power should be transitioned. The controller temporarily alters the data transferred from the memory to the accumulator during transitions of the transmit power level. | 10-04-2012 |
20140086370 | CIRCUITS, SYSTEMS, AND METHODS FOR MANAGING AUTOMATIC GAIN CONTROL IN QUADRATURE SIGNAL PATHS OF A RECEIVER - A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine. | 03-27-2014 |
20150244556 | CIRCUITS, SYSTEMS, AND METHODS FOR MANAGING AUTOMATIC GAIN CONTROL IN QUADRATURE SIGNAL PATHS OF A RECEIVER - A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine. | 08-27-2015 |
Patent application number | Description | Published |
20090017840 | MOBILE TERMINALS INCLUDING DISPLAY SCREENS CAPABLE OF DISPLAYING MAPS AND MAP DISPLAY METHODS FOR MOBILE TERMINALS - A mobile terminal includes a communication module, a display screen, and control circuitry. The circuitry is configured to estimate a current geographic position of the mobile terminal, and to determine if the estimated current position of the mobile terminal is within a boundary of geographic map information stored in the mobile terminal. The circuitry is further configured to retrieve additional geographic map information including the current position of the mobile terminal using the communication module if the current position of the mobile terminal is not within the boundary of the stored geographic map information. | 01-15-2009 |
20090198740 | DATA SHARING - A system is provided for sharing data over a network. The system includes a plurality of portable electronic devices among which data may be shared, and a data share server through which data to be shared between the plurality of portable electronic devices is routed via the network. The data share server includes a data share unit for receiving data to be shared from a source portable electronic device among the plurality of portable electronic devices via the network, and for forwarding the data to be shared to a destination portable electronic device via the network. In addition, the data share server includes a data storage unit for copying the data to be shared and maintaining the copy for subsequent sharing among the plurality of portable electronic devices. | 08-06-2009 |
20090321522 | UTILIZING DATA FROM PURCHASES MADE WITH MOBILE COMMUNICATIONS DEVICE FOR FINANCIAL RECORDKEEPING - A system and method of using a portable network device to record recording data associated to a transaction made. Transaction data obtained from a transaction, which may be executed with a portable network device, is utilized to categorize the transaction. In one aspect, the transaction may be categorized based on one or more parameters associated with the transaction. In one aspect, a transaction may be conducted with the portable network device and categorized based on a location of the portable network device at the time the transaction was conducted. | 12-31-2009 |
20100090960 | Methods, Systems and Computer Program Products for Shared Input Key Functions Between Mobile Devices - Methods, systems, mobile devices and computer program products for sharing input keys between mobile devices are provided. A communication link is established between at least two mobile devices. Each of the at least two mobile devices includes available input keys that are mapped to corresponding input functions in a first configuration. An application is selected for operation on at least one of the mobile devices. The application includes a plurality of input functions. A set of input keys is identified from the available keys on the at least two mobile devices based on the plurality of input functions of the application. The set of input keys are remapped on the at least two mobile devices in a second configuration in which the plurality of input functions of the application are mapped to the set of input keys. User input is accepted from the set of input keys on the at least two mobile devices to thereby operate the selected application. | 04-15-2010 |