Abstract: A broadcast reception apparatus and an operating method thereof are provided. In order to prevent preference information which a viewer does not expose from being transmitted to a broadcasting station, the broadcast reception apparatus transmits limited preference information regarding broadcast programs or additional information to the broadcasting station. Accordingly, the viewer privacy can be protected, and the viewer can receive only desired information from the broadcasting station. The preference information may not be sent at all in another embodiment.

Abstract: Disclosed is a receiver so adapted that even it receives a signal having the same communication frequency and frequency band as its own, restart of a receive-signal processor is inhibited for a fixed period of time if the receive signal is not a desired signal. The result is a reduction in power consumption. The receiver includes a start circuit for detecting a radio-frequency signal and outputting a start signal if a level of the detected radio-frequency signal is no less than a fixed level, and a receive-signal processor for receiving the start signal and starting a demodulating operation for demodulating the radio-frequency signal.

Abstract: The invention relates to a method for configuring a radio receiver, in which at least one parameter is received by a first receiving means via a first connection of a first network, at least one configuration parameter is generated by evaluating the parameter, and a second connection to a second network is established by a second receiving means of the radio receiver based on the configuration parameter. The invention further relates to said radio receiver as well as a first transmitter of the first network.

Abstract: An output buffer providing a buffered output signal using multiple power supplies. The output signal is driven using a first power supply during a first interval, and using another (second) power supply during a second interval. In an embodiment, the first power supply is designed to be a high capacity supply, and drives the output signal during a substantial portion of a logic 0 to logic 1 transition. The second power supply is designed to be a low capacity supply, and drives the output during steady states (logic 0/logic 1).

Abstract: A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.

Abstract: A communication unit for a radio communication system comprises a receiver for receiving data over an air interface. The receiver can operate in a first diversity mode and a second diversity mode. The first diversity mode may specifically correspond to no receive diversity being employed and the second diversity mode may correspond to signals from two or more fully or partially de-correlated antennas being combined. The communication unit comprises a data unit which determines a first data characteristic for a section of data to be received over the air interface. A switching unit is arranged to switch between the first diversity mode and the second diversity mode in response to the first data characteristic. The invention may allow improved performance and e.g. reduced power consumption by allowing an improved adaptation of diversity operation. In particular, an improved trade-off between power consumption and performance may be achieved in many embodiments.

Abstract: A receiver for receiving different types of signals includes a receiver input for receiving a receiver input signal. A signal converter can convert the receiver input signal into a receiver output signal. A receiver output is connected to a converter output of the signal converter, for outputting the receiver output signal The receiver has a control input via which controllable parameters of the receiver can be controlled. The receiver further includes a memory. The memory has a first memory part in which a first set of receiver control parameters values for the receiver are stored and a second memory part in which a second set of receiver control parameters values for the receiver are stored. The receiver being able to receive a selected type of signals when the receiver is set in accordance to a selected set.

Abstract: A wireless receiver includes a feedback path, and a main path. The feedback path feeds back a first signal at a predetermined frequency range to remove a desired signal at the predetermined frequency range, and the feedback path to outputs an accumulated blocker error signal. The predetermined frequency range is lower than a radio frequency (RF) range. The main path subtracts the accumulated blocker error signal from a second signal including a blocker signal at the RF range to generate a third signal and down-converts the third signal to output the first signal at the predetermined frequency range.

Abstract: A wireless communicating apparatus is provided which includes two receiving methods, and can determine a favorable receiving method. The wireless communicating apparatus executes, which is provided with the two receiving methods of a first receiving method which is used in a propagation path environment in which it is necessary to reduce the multi-path interference, and a second receiving method which is used in the propagation path environment in which it is not necessary to reduce the multi-path interference, a first determination (step S1) for determining whether or not the fluctuation in time for the path is less than a predetermined threshold, and a second determination (step S2) for determining whether or not the number of the paths is less than a predetermined threshold, and determines (step S3, 4) to use which receiving method of the first receiving method or the second receiving method to communicate via wireless according to a first determination result and a second determination result.

Abstract: At least one embodiment of the invention provides an automated frequency offset compensation method, system, and apparatus that improves throughput between one or more wireless communication devices by compensating for frequency offsets caused by a Doppler effect. In particular, one implementation estimates the frequency offset and uses this to compensate the carrier signal power to interference power ratio (C/I) when the transmitting and receiving devices are moving relative to each other such that a Doppler effect creates a frequency offset in the perceived frequency of the received carrier signal.

Abstract: A wireless terminal has a diversity function and includes a plurality of receiving branches. Receiving units are provided for the plurality of receiving branches, respectively. The receiving units can receive radio signals of a plurality of frequencies. A controller controls in a gap zone in a compressed mode such that the receiving units are allowed to receive radio signals of different frequencies.

Abstract: An object of the invention is to stabilize the convergence operation at the automatic impedance matching time and ensure the reception quality in the convergence process in a fading environment in a radio communication apparatus which performs automatic impedance matching between an antenna and a Radio frequency section to decrease the impedance matching loss, for example, when the apparatus is brought close to a human body.

Abstract: An AGC processing portion receives a burst signal of each received frame, and measures its received power level to perform gain control of a variable gain amplifier. Unlike a conventional wireless receiving device, a digital signal from an A/D converter is directly supplied to the AGC processing portion, without passing through an FIR filter. Accordingly, the input timing for the AGC processing portion does not include a delay due to the FIR filter, and an amplitude value can be adjusted to be appropriate from the leading part of each frame, suppressing the occurrence of a reception error due to AGC processing.

Abstract: The present invention provides a large capacity, user defined audio content delivery system. The system delivers uninterrupted music and delivers information content (e.g., news by evaluating and encoding an input audio stream while outputting another stream. Undesirable audio content (e.g., advertisements and unwanted news) are not present in the output audio stream as only desired portions of information content are stored for playback on demand. The invention also includes a user interface that is simple enough to facilitate utilization of the audio system in an automobile and employs standard hardware available in typical computing and/or personal digital assistant equipment. Additionally, the audio system can be portable (e.g., as portable as a personal digital assistant) and can be updated in real time or off line via a personal computer.

Abstract: In one embodiment, the present invention includes a receiver having two complementary input sense amplifiers to receive, amplify and latch a differential signal and to output complementary stage differential output signals to a latch coupled to receive and combine the n? them into a latched differential output signal. Other embodiments are described and claimed.

Abstract: Methods are described of processing a signal transmitted over a channel in a wireless communication system. A method includes estimating at intervals at least one parameter of a time varying communication environment of said system. At least one processor-related signal processing criterion can be monitored for implementing a signal processing activity. Based on said at least one parameter and said at least one processor-related criterion, a signal processing function can be selected from a plurality of signal processing functions implementable by a processor. Each signal processing function includes a plurality of code blocks having a sequence of instructions for execution on a processor platform, the processor platform including a set of configurable operators having a plurality of predetermined configurations, each sequence of instructions including at least one configuration instruction, which selects one of the plurality of predefined configurations for executing that code block.

Abstract: Some embodiments of a portable medical device, such as an infusion pump, can receive an external reference signal (e.g., a radio, cellular and/or satellite signal) to provide an automatic time-setting and maintenance operation. In these circumstances, the medical device can maintain accurate time and date information even in the event of a power interruption, a time-zone change and/or an internal clock error, for example. In this manner, the portable medical device provides safe operation and added convenience to the user.

Abstract: In a method of tuning a receiver for a digital signal (MPEG2-TS), an input signal (RF-in) is filtered (In-filt, Band-filt) to obtain a processed signal, a digital figure of merit (BER) is determined (Mix/Osc/IF amp IF-downconv-2, C) from the processed signal, and the filtering step (In-filt, Band-filt) is fine-adjusted (?P, PLL, DAC1-DAC3) in dependence on the digital figure of merit (BER).

Abstract: Signals are received with a wider power range even through the use of existing AGCs than by conventional mobile communication terminals. In an AGC on one antenna side, in order to enable reception of a signal at a higher level, a target TA of a dynamic range DA of this AGC is changed to a value 5 dB higher than a value defined as a standard TS. On the other hand, in an AGC on another antenna side, in order to enable reception of a signal at a lower level, a target TB of a dynamic range DB of this AGC is changed to a value 5 dB lower than the value defined as the standard TS.

Abstract: For a weighting circuit for adjusting a feedback control loop to an input signal of the feedback control loop the feedback control loop comprises a system under control and a device for generating a control difference signal by subtracting a weighted feedback signal from the input signal. The control difference signal is fed to the system under control which generates an output signal. The output signal is multiplied, by means of a weighting circuit by a sequence of multiplication factors for generating the weighted feedback signal. A frequency bandwidth of the feedback control loop is reduced step by step by the sequence of multiplication factors.

Abstract: Clock and data recovery circuitry includes an interleaved sampler having multiple integrators, where at least one of the integrators integrates the input data for at least two unit intervals (UIs). One embodiment includes a four-way interleaved sampler, where each integrator in the sampler integrates the input data for two UIs, where each integrator is sampled at or near the middle of its two-UI integration cycle. In an exemplary 10-GHz system, the reset cycle of each integrator may begin many tens of picoseconds after the data is sampled. Since the signal is sampled near the center of the integration cycle and is not highly proximate to the time of the integrator reset, the latch signal has a window of uncertainty extending into the length of a data bit cell with little possibility of latching erroneous data. The sensitivity of the clock recovery circuitry may be optimized by centering the latch function over the time of highest signal level, thereby maximizing signal-to-noise ratio.

Abstract: A receiver 650 operates in close proximity to at least one other component 610, 611, 612 causing interferences in signals received by the receiver 650. It is determined (steps 2002; 2003) whether and at which frequency a higher harmonic of and/or an inter-modulation product with signals generated by the other component 610 causes interference in signals received by the receiver 650, based on information about signals generated by the other component 610, 611, 612. At least one characteristic of the receiver 650 is adjusted to diminish an influence by a determined interference.

Abstract: The disclosure provides a wireless manager operable to receive a request from a mobile device to wirelessly communicate with an enterprise network, with the request including information operable to dynamically identify a location of the mobile device. The wireless manager is further operable to automatically associate an access zone with the mobile device with the access zone comprising at least one logical characteristic, compare the location information to the associated access zone, and, if the location information indicates that the mobile device does not violate the access zone, authorize wireless communications with the enterprise network.

Abstract: A mobile telephone jamming system for automobiles includes circuitry for jamming mobile telephone communications and a mechanism for an authorized person to selectively turn off the jamming. It may also include one or more switches or sensors, such as the ignition switch, a speed sensor, or an on-off switch to selectively control when the mobile telephone jamming system interferes with mobile telephone calls.

Abstract: A signal processing device and signal processing method is provided that includes a detection unit for detecting a signal strength of a signal, whereby the detection unit is configured to output a detection value that represents the signal strength of the signal; a settable digital filter connected upstream of the detection unit, whereby filter coefficients for setting a transfer characteristic of the filter are assigned to an amplification or attenuation of the signal by the filter; a digital multiplication unit, which is connected upstream of the detection unit for amplification or attenuation of the signal, whereby the multiplication unit is configured to compensate partially for the amplification or attenuation of the filter, whereby the compensation is encumbered with a residual error; and a correction unit to apply to the detection value a correction value at least partially compensating for the residual error.

Abstract: A DC-offset cancellation system for a wireless receiver is disclosed. The DC-offset cancellation system comprises an amplifier and an impedance inverter configured to transform inductance applied to a received signal to a capacitance.

Abstract: A bias filtering module with at least two capacitive levels satisfies both a settle time requirement and a filtering requirement using a voltage dependent filter module whose capacitance is a function of a voltage potential on the filtering circuitry output terminal. The final capacitance level is approximately three times larger than the initial capacitance level. MOS capacitors having a voltage dependent charge capacity within the bias filtering module are coupled between a plurality of bias lines and circuit common. In an alternate embodiment, a selectable first group of capacitors are switched into connection within the bias filtering module as a second group of capacitors approximately reach a fully charged state within a specified settle time to provide improved filtering.

Abstract: A receiver suitable for applications that desire a common-mode voltage range from approximately 0.7V to approximately 0.9V is arranged by coupling first and second differential pair circuit architectures based on first and second current-steering schemes into the same path to generate an output signal. The receiver includes first and second differential pair circuits. The first differential pair circuit is coupled to a first current-steering path via a first port and a second current-steering path via a second port. The second differential pair circuit is coupled to the first current-steering path via a third port and the second current-steering path via a fourth port. A bridge circuit is interposed between the first and second differential pair circuits. The bridge circuit integrates the first and second current-steering paths in a single-stage of the receiver assembly. A bias signal directs the bridge circuit over a set of worst case conditions.

Abstract: An active mixer with self-adaptive bias feedback is described and resolves a poor linearity, inconvenient design of a bias circuit, and other defects of a conventional mixer. The dual self-feedback bias structure according to this invention is used. The active mixer with self-adaptive bias feedback has a power supply, an RF input match/drive unit, a local oscillator input match/drive unit, a mixer core unit, a self-adaptive twin bias circuit and an IF output match/buffer unit. This invention improves the linearity of a conventional mixer and does not affect other characteristics. There are fewer components in this invention; an area of the mixer is thus smaller. Further, this invention may improve temperature response, increase yield factor, and lower unit cost. The dual self-feedback bias structure is designed for further application to other semiconductor manufacturing processes, components, and microwave products.

Abstract: An aviation radio frequency receiver front end (502) and a corresponding antenna (501) are coupled together. The antenna is configured and arranged to be disposed during use in a fixed position proximal to an exterior surface of the aircraft fuselage. By one approach the antenna and the aviation radio frequency receiver front end are disposed in close physical proximity to one another. This can comprise, for example, having these elements comprise a single integrated physical structure. This can also comprise, where desired, disposing a corresponding aviation radio frequency receiver back end in close proximity to such components.

Abstract: A receiver to recover a signal of interest while consuming reduced power in some scenarios. The receiver contains a in-phase channel processing path and a quadrature phase channeling path for down converting an input signal to an intermediate frequency, and then recovering the signal of interest by further processing of the input signal at intermediate frequency. One of the two paths is turned off upon occurrence of a desired condition, which reduces power consumption. In an embodiment, the condition is that the input signal does not contain an image signal of the signal of interest.

Abstract: The radio receiving apparatus including an adaptive receive filter capable of detecting an interference wave and out-of-band noise level correctly and improving reception performance.

Abstract: A method (700, 1100) and apparatus (300) are provided in a receiver for applying a variable gain to a received signal including a transmitted codeword in accordance with an Ultra Wideband (UWB) protocol. A first signal is generated and input to a selectable gain stage including a series of selectable 0 dB and 9 dB gain elements (302-305). The first signal includes the received signal mixed with a local oscillator signal modified according to a reference codeword. A gain value is selected from the selectable gain stage to amplify the first signal and form a second signal. An output signal is generated by combining the second signal and the modified local oscillator signal.

Abstract: A receiver (1800) includes a mixing digital-to-analog converter (DAC) (1807), a direct digital frequency synthesizer (DDFS) (1848), a first power detector (1826), and a first control circuit (1834). The mixing DAC (1807) receives a digital local oscillator (LO) signal and a radio frequency (RF) signal and provides an output signal located in a first frequency band. The DDFS (1848) includes a first clock input that is configured to receive a first clock signal that sets a sample rate for the digital LO signal. The first power detector (1826) has an input coupled to an output of a switching section (1808) of the mixing DAC (1807). An output of the first power detector (1826) is configured to provide a channel power associated with the output signal.

Abstract: The present invention relates to an automatic gain controller in a wireless packet communication system and an automatic gain control method thereof. The automatic gain controller includes a variable gain amplifier, a signal saturation determining unit, a power calculator, and a gain controller. The gain controller includes a first gain selector and a second gain selector. In the automatic gain control method, an establishment gain of a variable gain amplifier is reduced when the number of samples greater than a predetermined reference is greater than a predetermined number. After a received power value is measured, the establishment gain is controlled by a difference between the received power value and a reference power value.

Abstract: A method for processing signals received (30) by a sound programme signal receiver includes a step (42, 44) of adjusting at least one parameter for processing small audio signals obtained from the received signals. It further includes a prior step of dividing a space representing a quality of reception of sound programme signals into a plurality of reception zones wherein the sound programme signal receiver is likely to be located. The adjustment (42, 44) of the parameter for processing small audio signals is determined on the basis of one of the reception zones wherein the sound programme signal receiver is located.

Abstract: A receiver has an offset application circuit for applying a known offset to an input signal, and a decision circuit for comparing the offset-applied input signal with a reference voltage. The level of the input signal is determined based on the known offset and on the result output from the decision circuit. With this configuration, a large common mode voltage can be eliminated in a circuit used for signal transmission.

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: A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.

Abstract: The present invention provides an configuration setting device of integrated circuit and the configuration setting method thereof, in which the configuration setting device comprises a signal receiving terminal, a voltage output unit coupled to the signal receiving terminal, and a detector coupled to the signal receiving terminal. The signal receiving terminal is used to receive the input signal at the outer of the integrated circuit, and the voltage output unit generated at the inner of the integrated circuit is used to output a voltage signal based on the enable signal, and the detector is used to detect a level at the signal receiving terminal to output a configuration signal; wherein, the signal level generated at the signal receiving terminal is determined by the input signal and the voltage signal.

Abstract: In an access control system, a method and system for power management. A method of power management in a wireless access control system includes monitoring usage of a transceiver in a remote access point in a wireless access control system, de-activating the transceiver when the transceiver is not in use, and re-activating the transceiver upon occurrence of a predefined event. Additionally, the method may include transmitting a warning signal when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The method may further include locking the remote access point when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The remote access point may be locked until the energy level is above the predetermined threshold.

Abstract: An asynchronous sample rate converter including a feedback loop configured to generate a control signal corresponding to an output sample rate that is synchronous with an output clock signal and a normalized time distance value corresponding to a plurality of input samples and an interpolator configured to generate an output sample in response to receiving the control signal using the normalized time distance value and outputs of at least two polyphase filter components that are generated from at least the plurality of input samples is provided.

Abstract: The invention proposes a repeater designed for indoor transmissions. The useful frequency band is split into two frequency bands and the repeater amplifies the signals from one of the bands and translates them to the other band. The transposition of frequency bands results in preventing creating significant interference effects on the signal to be amplified. A management circuit is used to address, at lower cost, interference problems between the bands.

Abstract: A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.

Abstract: A signal processing circuit for a tuner has a detector band pass filter for extracting a carrier of an intermediate frequency signal, a frequency counter for counting, based on a clock signal, a frequency of a carrier of the intermediate frequency signal which passes through the detector band pass filter, and an intermediate frequency variation signal outputting section for outputting an intermediate frequency variation signal based on a difference between the counted frequency and a frequency of the clock signal. Based on the intermediate frequency variation signal, a frequency selection characteristic of an intermediate frequency band pass filter, a signal detector, an adjacent interference detector, or an S-meter-band pass filter are controlled.

Abstract: A method and apparatus for adjusting usage of digital signal processing (DSP) in a handheld terminal receives reception level data and reception quality data from a network, compares the received reception level data value and reception quality data value with pre-stored basis values, and then adjusts present usage of DSP based on the comparison result. Through this method and apparatus, usage of digital signal processing elements in the terminal is automatically optimized, thereby providing stable communication service to users.

Abstract: An antenna detection and diagnostic system and associated method, including current and voltage detection circuits, are disclosed for detecting antenna failure mechanisms for integrated radio receivers. Integrated current limit detection circuitry is disclosed that determines current levels drawn by a remotely mounted antenna and generates a drive signal that controls a current limiting pass transistor such that current flow through the transistor is reduced when the detected current level drawn antenna rises above a current limit level. Integrated current and voltage detection circuitry is disclosed that detects current and voltage levels drawn by a remotely mounted antenna and determines under-current, over-current, and over-voltage antenna error conditions. At least one antenna error output pin for the integrated radio receiver is then used provide an output signal indicative of antenna error conditions.

Abstract: AM receiver comprising an RF input circuit for receiving an RF AM signal, demodulation means providing an audio signal carried by said RF AM signal as well as automatic gain control means for stabilising an RF carrier dependent DC level at the output of said demodulation means at a substantially fixed stabilisation value. In order to improve the receiver performance in particular at low values of the RF reception fieldstrength, the RF input circuit is being provided with a cascade of N tuneable resonance amplifiers being tuned to said RF AM signal, said automatic gain control means controlling at least one of said cascade of N resonance amplifiers to increase in both gain and selectivity at a decrease of the fieldstrength of said RF input signal.

Abstract: An electrical circuit detects a “squelch,” or “out-of-band,” state of a differential signal pair having a positive (“p”) signal line and a negative (“n”) signal line. In one embodiment of the invention, a first and a second comparator each have positive inputs driven by the positive and negative signal lines, respectively. The negative inputs of the comparators are driven by the outputs of separate digital-to-analog converters (DACs) which are set to a lower squelch threshold voltage. The outputs of the comparators then drive the inputs of a logical AND gate, the output of which indicates the current squelch state of the differential signal pair.

Abstract: A radio telecommunications network comprises a transmitter (2) and a receiver (4). The transmitter (2) is operative to send signals indicative of data, and the receiver (4) is operative to receive the signals (12) and decode the signals to determine the data. The receiver (4) comprises indicator means to send to the transmitter (2) an indication of whether data has been correctly determined, and the transmitter (2) is operative to retransmit at least some data not correctly determined. The receiver (4) further comprises a buffer (14) operative to store the determined data. The buffer (14) is operative to output the determined data at a predetermined rate.