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7620135 |
Data processing apparatus that identifies a communication clock frequency
A data processing apparatus receives a message containing a sync break interval with a unique bit pattern and a sync field interval identified by the sync break interval. A timing property of the...
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7609752 |
Transmitter and transmission control method used in random access communication environment
A transmitter comprises a frequency utilization status detector configured to detect the utilization status of an allocated frequency band based on a received signal, a symbol placement...
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7606303 |
Method and apparatus to detect anchor frames from digital video streams
A method ( 60 ) and apparatus process video in a multiple encoder system by identifying ( 61 ) those frames that were originally encoded as anchor frames in the first encoder and ensuring that a...
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7590184 |
Blind preamble detection for an orthogonal frequency division multiplexed sample stream
A method for determining a presence of a preamble for an orthogonal frequency division multiplexed (OFDM) complex valued sample stream may include capturing a portion of the OFDM complex valued...
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7570684 |
Method for joint time synchronization and frequency offset estimation in OFDM system and apparatus of the same
Embodiments of the present invention include a method for performing joint time synchronization and carrier frequency offset estimation in a wireless communication system, comprising steps of: on a...
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7561649 |
Method and apparatus for synchronization mark detection with DC compensation
A method and apparatus are disclosed for detecting a synchronization mark in a received signal. The received signal is processed to compensate for a DC bias in the received signal, such as...
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7558354 |
Pilot symbols in communication systems
This invention relates to signal processing in telecommunications, particularly but not exclusively for use in wireless TDMA systems. In particular, the invention concerns methods for use in...
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7545853 |
Method of acquiring a received spread spectrum signal
A method of acquiring a received spread spectrum signal, especially a GPS signal, is disclosed together with a spread spectrum signal receiver and a cellular telephone incorporating such a...
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7535983 |
Method for identifying the beginning of a UWB pulse sequence
A method for transmitting data in the form of pulse sequences, including a signal synchronization step carried out by a receiver of dataframes DF, in the course of which at least one time window...
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7522689 |
Clock recovery in communication systems
In a frequency hopped wireless network, more robust method and system are disclosed for recovering clock synchronization. The method and system of the invention relies on the fact that correct...
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7515920 |
Communication terminal unit, cell-search method, and program
In carrying out a cell search, the received-signal level (RSSI) at each frequency is measured in the first place, by implementing asynchronous detection in steps of a predetermined frequency-step...
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7512202 |
Harmonic detector system and method
A harmonic detector including a pattern detector circuit responsive to a clock signal and a data signal configured to detect a target bit pattern from said data signal, and a time-out circuit...
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RE40661 |
Error prevention method for multimedia data
An error protection method for multimedia improves data recovery and channel throughput in channels which cause a random error and a burst error by using a rate compatible punctured convolutional...
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7496132 |
Pilot signals for synchronization and/or channel estimation
The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum...
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7486755 |
Method and system for undersampled symbol synchronization
Described is a system and method for providing a synchronization pattern in a communication system. The method includes generating a synchronization pattern with good randomness properties; packing...
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7474723 |
DSRC communication circuit and communication method
A DSRC communication technology that prevents unique word detection errors even when the frame changes in data reception and the timing of the unique word detection window and the timing of the...
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7472336 |
Data detector and multi-channel data detector
A data detector detects an identification signal of a prescribed format from N-bit wide parallel input data (where N is a natural number). The data detector includes P first comparing sections...
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7471727 |
Integrated serial data decoder
The present invention provides a serial data decoder without capacitor that can be made in the form of an integrated circuit without any additional external device. The integrated serial data...
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7463708 |
System and method for synchronization signal detection and recovery from false triggers
A system and method for detecting a synchronization (sync) signal in a communication signal are disclosed. A received communication signal is stored in a memory and portions thereof are read from...
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7460174 |
Apparatus and method for detecting synchronization signal of data signal utilizing synchronization symbols
A synchronization signal detector includes: a first circuit configured to delay the data signal by a period of at least one data segment of the data signal to generate a delayed signal; a second...
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7457389 |
Data block synchronization device, system and method
Described are a system, method and device to synchronize block data received in a data stream where the data stream is received on set data word increments. A synchronization header in each of a...
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7453863 |
Cell searching apparatus and method in asynchronous mobile communication system
A cell searching apparatus and method in an asynchronous mobile communication system allocates an adjacent SCG to each base station according to adjacent degrees. When a mobile terminal is powered...
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7450654 |
Method and apparatus for multicarrier channel estimation and synchronization using pilot sequences
Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations...
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7450616 |
Area efficient serializer implementation for small functional-to-serial clock ratios
This invention adds one extra bit which can be viewed as a shadow of most significant bit of the serial register. This extra register bit is referred as buffer_flop. When the receive data is coming...
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7433394 |
Transmitting/receiving arrangement, and a method for bidirectional transmission of data via a digital interface in a radio
A transmitting/receiving arrangement comprises a baseband module ( 1 ) and a radio-frequency module ( 3 ), which are connected to one another via a bidirectional data line ( 21 ) and a bit clock...
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7430196 |
Transmission systems
A receiver comprising a processor having an input to receive a sequence of transmission frames conforming to a transmission protocol to represent payload data,
a memory arranged to store and...
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7424079 |
Receiving apparatus and synchronising method for a digital telecommunication system
A receiving apparatus for receiving signals in a digital telecommunication system and a synchronizing method for synchronizing the receiving apparatus. The receiving apparatus includes a receiver...
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7415091 |
Multiple frame rate synchronous detecting method and apparatus
A multiple frame rate synchronous detecting apparatus for synchronous-detecting received serial data having one frame rate among a plurality of predetermined frame rates is provided. The apparatus...
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7415059 |
Method and system for fast timing recovery for preamble based transmission systems
Using a combination of auto-correlation and cross-correlation techniques provides a symbol timing recovery in a Wireless Local Area Network (WLAN) environment that is extremely robust to wireless...
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7386082 |
Method and related apparatus for searching the syncword of a next frame in an encoded digital signal
A method and apparatus for searching the synchronization signal of a next frame in encoded digital signal without the need of referring to a frame length indication signal. The encoded digital...
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7386081 |
Timing control circuit and method thereof
A timing control circuit includes a synchronous detecting portion which detects a synchronous pattern data of a received signal which has been demodulated based on a first control signal and...
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7386063 |
Voting block for identifying WLAN signal modulation type
A WLAN device operating in an 802.11g mode can receive signals of different modulations. A technique is provided that quickly and accurately identifies signals of different modulation types when...
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7382845 |
Distribution of synchronization in an ethernet local area network environment
Systems and methods are described for distribution of synchronization in a packet switched local area network environment. A method for extracting network synchronization timing from a data...
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7376855 |
Fully stable clock domain synchronization technique for input/output data transmission
Input/output data transmission between a transmitting integrated circuit and a receiving integrated circuit requires a clock domain synchronizer to synchronize incoming data aligned to a clock...
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7369635 |
Rapid discrimination preambles and methods for using the same
A system, method and program are disclosed for achieving rapid bit synchronization in low power medical device systems. Messages are transmitted via telemetry between a medical device and a...
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7369633 |
Method and apparatus for providing carrier synchronization in digital broadcast and interactive systems
An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that...
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7366269 |
False lock detection circuit and false lock detection method, PLL circuit and clock data recovery method, communication device and communication method, and optical disk reproducing device and optical disk reproducing method
Disclosed herein is a false lock detection circuit including: a data signal input section receiving an input of a data signal; a clock signal input section receiving an input of a clock signal...
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7336751 |
Power control circuit and radio transmission apparatus
The invention relates to power control of a cellular mobile communication system using TPC, and a power control circuit in a base station set and a radio terminal is equipped with a synchronism...
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7327818 |
Sync pattern detection method and apparatus
A sync pattern detection apparatus includes a sync pattern detection unit configured to detect a sync pattern from an input signal, a plurality of sync pattern protection units configured to...
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7324619 |
Method and apparatus for auto-tracking and compensating clock frequency
A method and an apparatus for auto-tracking and compensating a clock frequency are disclosed. The method is suitable for being applied in USB controllers. The apparatus for receiving a data stream...
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7324560 |
Recovering clock and frame information from data stream
A method for transmitting a digital data stream includes recovery of data clock information and data frame information from the digital data stream. The method includes providing a digital data...
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7298290 |
DSRC controller and a method therefor
In a DSRC communications controller equipped with a plurality of reception means for DSRC communications according to the invention, a reception reservation storage section 104 comprises means...
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7292668 |
Data processor and data processing method
In a data processor, a pickup head reads the data from a memory medium. Such data transferred in a plurality of parallel bits in synchronization with the clock signal to a controller unit from a...
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7277499 |
Additive DC component detection included in an input burst signal
A method for processing an input burst signal comprising a first step for identifying an additive DC component and generating an output signal, which is representative for an estimated value of...
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7277441 |
System and method for creating and using unique packet preambles for data communication
Data communication system is provided that comprises a plurality of switches which each comprise a respective controller. Ports on the switch are connected to any one of a multiplicity of far-end...
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7260657 |
Serial data transferring apparatus
A master unit sends a start signal to a slave unit. When receiving the start signal from the master unit, the slave unit sends, to the master unit, a synchronization field that is a data train...
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7253754 |
Data form converter between serial and parallel
A data form converter allowing parallel-to-serial or serial-to-parallel conversion at various conversion ratios is disclosed. A frequency divider divides an input clock in frequency at a variable...
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7250797 |
Event edge synchronization system and method of operation thereof
The present invention provides an event edge synchronization system and a method of operating the same. In one embodiment, the event edge synchronization system includes: (1) a first clock zone...
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7239813 |
Bit synchronization circuit and central terminal for PON systems
A bit synchronization circuit composed of a multiphase data sampling unit for converting each received burst data sets to multiphase data trains, a phase determination unit for generating a control...
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7231583 |
Communication method and apparatus
In a frame sync method, a receiver searches for the presence of an N-symbol long unique word pattern. For each possible frame sync detected, the receiver proceeds to demodulation and FEC...
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