Abstract: An alternate adjacent channel interference (AACI) filter is integrated into an intermediate frequency (IF) channel select filter to filter received RF signals. The IF channel select filter is an IF staged structure comprising successive IF stages. Each of the successive IF stages is a 2-biquad integrator. The AACI filter is integrated into the first IF stage of the IF channel select filter by re-using circuit components such as an operational amplifier, an input resistor, and a shunt capacitor of the first IF stage. The shunt capacitor is coupled between a middle point of the input resistor and ground. The AACI filter is realized via different equivalent implementations of the re-used circuit components of the first IF stage. A value of the shunt capacitor of the AACI filter becomes a fixed-value when a value the input resistor is inversely proportional to the bandwidth of the AACI filter.

Abstract: Aspects of a method and system for processing signals in a high performance receive chain may include amplifying radio frequency signals in amplifier chains in a multistandard radio frequency front-end, comprising one or more shared processing stages, and combining, with substantially equal gain, a number of phase-shifted radio frequency signals of the radio frequency signals into substantially equal-gain-combined radio frequency signals. The substantially equal-gain-combined radio frequency signals may be demodulated to obtain inphase channels and quadrature channels. A number of inphase channels and quadrature channels may be processed in I-channel processing blocks and Q-channel processing blocks to generate an output analog baseband signal. The multistandard radio frequency front-end may be capable of processing Bluetooth® signals and Wireless Local Area Network (WLAN) signals.

Abstract: A charge pump provides charge based on a phase difference between a reference signal and a feedback signal. The relationship between the charge and the phase difference is referred to as the charge phase relationship. Charge pumps typically have a non-linear charge phase relationship. A non-linear portion of the charge phase relationship occurs about a point at which the charge and the phase difference are substantially zero. Points along charge phase relationship that represent the performance of charge pump are referred to as the charge phase characteristic of the charge pump. The charge pump includes an offset current circuit, which biases the charge pump to have a linear charge phase characteristic. For example, the charge pump is biased to have a charge phase characteristic that does not overlap with the non-linear portion of the charge phase relationship.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A charge pump circuit that supplies current to an offset current of an output signal for an oscillating circuit is disclosed. The charge pump circuit includes a first switch and a second switch. The first switch is coupled to a gate of an output diode that provides a charge up current from the charge pump circuit. A second switch is coupled to an anode of the output diode and supplies the charge up current to the output diode. The first switch comprises a first state and the second switch comprises a second state that is opposite the first state. Thus, when the second switch is on, the first switch is off. The charge pump circuit also includes a capacitance to hold a bias voltage when the first switch is off.

Abstract: Methods and systems for calibrating a frequency of a circuit are disclosed herein and may comprise dividing a feedback frequency of an output frequency signal to generate a divided frequency signal. Open loop calibration may be performed based on a binary search of the generated divided frequency signal to generate a coarse calibrated frequency signal. Subsequently, a closed loop calibration may be performed on the coarse calibrated frequency signal to generate a fine calibrated frequency signal. A binary code may be generated utilizing the binary search of the generated divided frequency signal. Capacitance within the circuit may be adjusted based on the generated binary code. A control voltage for the circuit may be measured by closing a phase locked loop (PLL) with the circuit. If the measured control voltage is not within a determined voltage range, a calibration flag signal may be generated.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A phase locked loop (PLL) includes a detector, a charge pump, a loop filter, a voltage controlled oscillator (VCO), a divider, and a frequency change module. The detector provides a phase difference based on a reference signal and a feedback signal. The charge pump provides a charge based on the phase difference. The loop filter provides a voltage based on the charge. The VCO provides an output signal based on the voltage received from the loop filter. The divider divides a frequency of the output signal by a value to provide the feedback signal. The frequency change module processes an input signal having a first frequency to provide a processed signal having a second frequency that is different from the first frequency. The frequency change module selects the input signal or the processed signal to provide as the reference signal to the detector. Changing the frequency of the reference signal can change a frequency of a spur.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A handwriting recording apparatus is provided. The handwriting recording apparatus includes a pen-shaped housing, a timer unit, a compass, a microprocessing unit, and a storage unit. The compass is equipped to the pen-shaped housing for detecting a moving direction of a motion of the pen-shaped housing. The timer unit is equipped inside the pen-shaped housing for recording a time data related to the motion of the pen-shaped housing. The microprocessing unit is equipped inside the pen-shaped housing for obtaining a motion vector of the pen-shaped housing according to the moving direction and the time data, and comparing the motion vector with a word data to generate a text file. The storage unit is equipped inside the pen-shaped housing for storing the text file so as to provide the text file for an external computer system to process or use.

Abstract: A phase locked loop (PLL) includes a detector, a charge pump, a loop filter, a voltage controlled oscillator (VCO), a divider, and a frequency change module. The detector provides a phase difference based on a reference signal and a feedback signal. The charge pump provides a charge based on the phase difference. The loop filter provides a voltage based on the charge. The VCO provides an output signal based on the voltage received from the loop filter. The divider divides a frequency of the output signal by a value to provide the feedback signal. The frequency change module processes an input signal having a first frequency to provide a processed signal having a second frequency that is different from the first frequency. The frequency change module selects the input signal or the processed signal to provide as the reference signal to the detector. Changing the frequency of the reference signal can change a frequency of a spur.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A method for managing a data storage system is provided. The data storage system includes a primary storage device and a spare storage device. The primary storage device includes a plurality of sections. The method first judges whether the primary storage device conforms to a first standard. Once the judging result is NO, the primary storage device is replaced with the spare storage device. The method then scans the primary storage device, checks which sections are failed in the primary storage device, and locates the failed sections. Then, the method repairs the failed sections that can be repaired and judges whether the primary storage device conforms to a second standard. If the primary storage device conforms to the second standard, the method sets the primary storage device as a new spare storage device.

Abstract: Certain aspects of a method and system for mitigating effects of pulling in multiple phase locked loops in multi-standard systems may include selecting an input frequency range of operation at a voltage controlled oscillator based on a particular wireless band of operation in a system that handles a first wireless communication protocol and a second wireless communication protocol. An image rejection mixer may be enabled to generate an output signal for the particular wireless band of operation based on mixing a plurality of received signals within a selected frequency range. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing a RC-CR quadrature network.

Abstract: Aspects of a method and system for processing signals in a high performance receive chain may include amplifying radio frequency signals in amplifier chains in a multistandard radio frequency front-end, comprising one or more shared processing stages, and combining, with substantially equal gain, a number of phase-shifted radio frequency signals of the radio frequency signals into substantially equal-gain-combined radio frequency signals. The substantially equal-gain-combined radio frequency signals may be demodulated to obtain inphase channels and quadrature channels. A number of inphase channels and quadrature channels may be processed in I-channel processing blocks and Q-channel processing blocks to generate an output analog baseband signal. The multistandard radio frequency front-end may be capable of processing Bluetooth® signals and Wireless Local Area Network (WLAN) signals.

Abstract: A data storage system including an array of storage devices and a storage controller is provided. The array of storage devices is configured to store information in the form of a plurality of stripes. The storage controller is configured to write a plurality of code words forming each stripe to the array of storage devices. The plurality of code words includes a plurality of data blocks and at least one redundancy block. K sets of parameters, which are generated based on a generator polynomial, are previously provided. The storage controller includes an encoder for generating the redundancy blocks according to the K sets of parameters. Once up to K storage devices in the array of storage devices are failed, the data storage system recovers the failed storage devices based on the K sets of parameters and the other un-failed blocks, wherein K can be larger than two.

Abstract: An apparatus and method to use a single voltage controlled oscillator (VCO) to generate frequencies to cover multiple frequency bands. The single VCO generates local oscillator signals for more than one frequency band of a communication standard or protocol, such as the IEEE 802.11 standard.

Abstract: An apparatus method to provide a frequency synthesizer using a phase locked loop in a communication device to provide a particular frequency allocation to generate an output from the PLL. The synthesizer includes a phase locked loop (PLL) circuit that has a feedback loop. The feedback loop has a feedback divider circuit that provides an N integer division of an output signal from the PLL in the feedback loop to close loop with the reference signal at a front end of the PLL. A value for feedback factor N to be used in the N integer division is based on a particular channel frequency selected and in which the feedback factor N is selected to provide a highest reference frequency available from the plurality of reference frequencies to generate the reference signal.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.