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8185064 |
Adaptive modulation control system and wireless communication apparatus
Object To reduce deterioration of transmission quality under circumstances where the moving speed is high.Overcoming MeansAn adaptive modulation control apparatus for adaptively selecting a...
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8177131 |
Data communication system, device for executing IC card function, control method for the device, and information processing terminal
An information processing terminal defines a data transfer state for permitting a contactless data communication through an IC card and a data not transfer state for not permitting the contactless...
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8169244 |
Crossing input signal modulator
The invention relates to a pulse width modulator, more particularly to a cross-coupled pulse width modulator. A crossing input signal modulator according to the present invention comprises: a...
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8160524 |
Signal receiving apparatus and control method thereof
A signal receiving apparatus includes: a receiver which receives at least two types of broadcasting signals included in a plurality of channels; and a controller which controls the receiver to...
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8160566 |
Message sender controllable messaging system
The present invention relates to a mobile phone and a method for its operation and control. The mobile phone is capable of receiving the message sent by other mobile phones through a message...
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8160119 |
Method and device for anti-interference fighting in a telecommunications system
A method of fighting interference in a frequency-hopping communication system is disclosed. The system has at least one main sensor and one or more auxiliary sensors. According to at least one...
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8155592 |
Method for transmitting low-frequency data in a wireless intercom system
A wireless communication system including a transmitter and a receiver. The transmitter includes a first mixing module, a phase-locked loop module, reference oscillator, and a second mixing module....
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8138892 |
Variable frequency tag
An antenna assembly is operative for receiving interrogating radiation at a variable frequency tag and generating a corresponding received signal, and for receiving a signature signal and radiating...
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8130948 |
Addressing of groups of broadcast satellite receivers within a portion of the satellite footprint
A method and system enables the selective addressing of groups of broadcast receivers within part of a satellite footprint. It uses two satellites having a common transmission band to transmit...
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8126401 |
Transmitter PLL with bandwidth on demand
An embodiment of the present invention provides transmitter having a phase locked loop that has a dynamically controllable loop bandwidth. A transmit modulator is coupled to the PLL for performing...
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8126504 |
Method of controlling wireless communication system and wireless communication system
A method of controlling a wireless communication system including a plurality of communication devices is disclosed. In the method, firstly, one of the communication devices establishes a fixed...
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8112119 |
Portable electronic device
An electronic device includes a first housing, a second housing, a drive mechanism and a voice-activated module. The drive mechanism connects the first housing with the second housing. The...
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8094629 |
Wireless local area network real-time quality management
The present invention provides a Wireless Local Area Network (WLAN) terminal, having a wireless interface that exchanges packetized communications with servicing Access Points (APs). A processing...
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8090318 |
Digital data processing circuit
A digital data processing circuit includes: an output unit configured to output to an audio signal processing circuit change data for changing a receiving frequency of a FM receiving device as a...
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8090316 |
Digital FM radio transmitter
A digital FM transmitter has a digital controlled oscillator for generating a modulated RF carrier. A digital signal processor receives digital input samples and generates a modulating signal for...
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8086190 |
Method and system for reconfigurable devices for multi-frequency coexistence
Aspects of a method and system for reconfigurable devices for multi-frequency coexistence are provided. In this regard, an IC may be configured based on a frequency of signals processed by the IC....
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8081927 |
Digital data processing circuit
A digital data processing circuit comprising: a setting unit configured to set setting data on an audio signal processing circuit configured to generate an FM modulated signal based on the setting...
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8078125 |
Method for demodulating a modulated signal, demodulator and receiver
A demodulator (6) for demodulating a modulated signal (3) comprises a Hubert transformer (7) for generating a Hubert transformed modulated signal (18) of the modulated signal (3). The Hubert...
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8078108 |
Protocol-controlled antenna selection
The idea on which the present invention is based is that transmitting and receiving data by an antenna or an antenna array may be performed more efficiently by analyzing protocol data of a transmit...
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8077799 |
Apparatus and method to adjust a phase and frequency of a digital signal
An apparatus comprising at least two controllers each providing control information for controlling phase or frequency of a digital signal, a combiner for combining control information from the at...
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8072284 |
Split delay-line oscillator for secure data transmission
A split delay-line oscillator for secure data transmission is disclosed. In one embodiment, an apparatus for a split delay-line oscillator for secure data transmission includes a first...
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8073079 |
Angle-modulated signal threshold extension device and method
A threshold noise-canceling method comprising the steps of: receiving an angle-modulated signal; identifying in the angle-modulated signal potential threshold noise events that exceed a first...
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8045937 |
Digital phase feedback for determining phase distortion
A feedback loop is used to determine phase distortion created in a signal by directly extracting the phase distortion information from a feedback signal using original frequency modulation...
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8027411 |
Wireless receiver
A wireless receiver having improved receiving characteristics is provided. The wireless receiver (151) is provided with an antenna (152) for receiving wireless signals including a modulation signal...
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8027641 |
Method and system for detecting channels suitable for FM transmission in an integrated FM transmit/receive system
A method and system is provided processing channel information may include in a mobile FM radio system including an integrated FM radio transmitter and FM radio receiver, dynamically generating a...
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8018914 |
Radio communication device, demodulation method, and frequency deflection correction circuit
A demodulation section 13 receives a TDMA-TDD based phase-modulated burst signal of mobile communications and demodulates the burst signal by a synchronous detection system (or a quasi-synchronous...
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8018985 |
CDMA receivers for the golden code
A Generalized Rake (G-Rake) receiver is adapted for Golden code reception in a CDMA system. Signals transmitted by two or more transmit antennas are received at two or more receiver antennas. The...
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7997480 |
Data communication system, device for executing IC card function, control method for the device, and information processing terminal
A data communication system includes an IC card function execution unit, a card reading/writing device, and an information processing terminal. The IC card function execution unit has a controller...
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8000666 |
Method and apparatus for identifying unused RF channels
A wireless connection apparatus which scans radio frequency bands for local quiet unused, vacant, or unassigned frequencies which the apparatus can use, on a temporary basis, to establish a link...
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7995770 |
Apparatus and method for aligning and controlling reception of sound transmissions at locations distant from the sound source
A receiver and method is for receiving wireless transmissions including program data and locating data, and for determining its location from the locating data, and optionally from a stored...
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7991355 |
Voltage overshoot protection
A transmission circuit for an RF inductive link, particularly for an implanted device such as a cochlear implant. In a preferred form, the transmission circuit 1 includes a transmitter coil 24 and...
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7986195 |
Digital FM modulator
Provided are apparatuses and methods for digital FM modulation. In one example, a message signal is integrated by an integrator to transform the message signal into a complex signal. The complex...
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7986217 |
Mitigating processing latency in RFID exchanges
In a radio frequency identification (RFID) system that requires an RFID reader to receive a response from an RFID tag and then transmit a command to the RFID tag within a certain time period, the...
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7986723 |
Delay estimation apparatus and method
Delay estimation apparatus and method, comprising: a correlation step which a correlation function between a received signal and a supplied template waveform is generated, AD conversion step at...
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7983235 |
High speed overlay mode for burst data and real time streaming (audio) applications
In a wireless 802.15.4 communication system (300), a high-speed data frame structure (340) is provided which uses the 802.15.4 SHR structure that is spread modulated to obtain the synchronization...
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7983617 |
Method and system for transmitting multiple channels on FM bands
Aspects of a method and system for transmitting multiple channels on FM bands may include generating from one or more baseband signals, a plurality of radio frequency transmission signals each at a...
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7974580 |
Apparatus and method for modulating an amplitude, phase or both of a periodic signal on a per cycle basis
An apparatus for wireless communications is disclosed including a signal generator adapted to generate a substantially periodic signal including a plurality of cycles, and a modulator adapted to...
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7970354 |
Frequency agile duplex filter
Systems and methods are disclosed for an electronically adjustable signal filter system, which comprises, in some embodiments, a first filter coupled to an antenna coupling network and a second...
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7921183 |
Communication system, storage device, and control device for accessing external file data on a page unit or sector unit basis
A communication system includes a storage device having a storage area accessed in one of a page unit and a sector unit; a control device operable to request access to data in a file unit; and a...
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7917102 |
Radio transmitting apparatus and radio transmission method
A radio transmitting apparatus that has a plurality of antennas and changes the number of modulated signals transmitted simultaneously according to the propagation environment and so forth. A...
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7917093 |
Wireless monitoring system and child station therefor
A wireless monitoring system using a base station and a child station, includes the base station including a base-station transmitting and a base-station receiving antenna, and the child station...
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7904578 |
Bandwidth and topology management device for home networks
Systems, methods, and equipment for use in the management of network topology and bandwidth for computing networks are provided. In an illustrative implementation of a device acting as a patch...
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7885609 |
Multimedia mobile communication terminal system and method
A multimedia mobile communication system and method capable of updating functions of a multimedia mobile communication terminal is provided, wherein the system and method may add to or modify the...
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7881669 |
Time reference point information transmitting system and receiver
A transmitter sets a time length, determines a time point at which phases of frequency signals coincide within a range of the time length, defines a determined time point as a time reference point,...
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7873100 |
Reception apparatus using spread spectrum communication scheme
In a reception apparatus, a matched filter that has conventionally been arranged in a searcher unit is mounted on an acquisition unit together with a large scale memory. The large scale memory once...
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7853212 |
Multi-mode modulator
A multi-mode modulator includes a first data path to process in-phase signals in a quadrature modulation mode, a second data path to process quadrature signals during the quadrature modulation...
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7835696 |
Adaptive subcarrier loading
A wireless multicarrier transmission method in which a multicarrier transmission uses n modulated frequency subcarriers (n is an integer number), and a fading condition of each subcarrier is...
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7826807 |
Methods and apparatus for antenna control in a wireless terminal
Base stations transmit strip signals using strip signal segments and self supporting modulation scheme techniques facilitating rapid channel estimate. A strip segment occupies one OFDM symbol time...
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7826800 |
Method and system for determining a time delay between transmission and reception of an RF signal in a noisy RF environment using phase detection
The present application describes a method and system for determining a time delay between a transmission and a reception of an RF signal in a noisy environment. The method comprises: transmitting...
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7822392 |
Frequency modulation circuit, transmission circuit and communication device
Provided is a frequency modulation circuit for outputting a frequency-modulated signal with a high precision. A VCO 13 includes a first variable capacitor 132 having a predetermined capacitance...
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