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7567633 Reception device with data recovery mechanism, adapted to transmission system using a direct spread spectrum sequence  
A BPSK type reception device that includes a decoder for decoding a digital input signal, first and second comparators for delivering a decoded data signal and a data capture clock signal also...
7508257 Low-power digital demodulator  
Apparatus for demodulating a train of pulses includes a one-shot device having an asynchronous data input terminal, which is configured to receive the train of pulses, and a one-shot data output...
7466772 Decoding coded data streams  
A method of decoding, in one particular embodiment, an IEC 60958 biphase coded data stream comprising determining the maximum period in the data stream without a transition; determining a first...
7450666 Ask demodulation device and wireless device using the same  
A delay section delays a detected signal by less than one bit time in the NRZ data. A subtraction section performs subtraction between a delayed signal and the detected signal, and outputs a...
7319722 Circuit for the decoding of biphase signals  
A decoding circuit and associated method are provided for decoding a biphase signal. The decoding circuit may include a precharging register to precharge a pair of states of the biphase signal,...
7289589 Maximum likelihood bit synchronizer and data detector  
A bit synchronizer ( 16 ) that includes a tapped delay line ( 38 ) connected to a plurality of timing hypothesis circuits. A control and adjudication circuit ( 50 ) is connected to the timing...
7206146 Biphase magnetic pattern detector using multiple matched filters for hard disk drive  
A hard disk drive (HDD) holds data using a biphase scheme. A plurality of matched filters are used to detect binary data represented by the biphase pattern without the need for synchronous sampling...
7095807 Method for decoding biphase signals  
A technique of decoding erroneous biphase signals is disclosed comprising the following steps. First, phase and magnitude sample values (ps, bs) are formed, from which a first digital signal (d 1 )...
7054361 Method and apparatus for enhancing an infrared signal protocol  
An apparatus and method for providing control signals, comprising a processor coupled to a memory, for generating a signal sequence. The processor encodes the signal sequence into a plurality of...
H002155 Downconvert and average identification of biphase coded signal carrier  
An improved apparatus and method for determining the carrier frequency in a biphase coded signal such as the course acquisition code signal in a global position sensing system. The described system...
6977973 System and method for decoding manchester data  
A method for decoding Manchester data is provided that includes receiving input data comprising at least two transition types. Each transition of a specified transition type in the input data is...
6904539 Method of determining data transfer speed in data transfer apparatus  
A method of determining a transfer speed of an encoded data signal including a clock signal and a data signal is provided. First, the encoded data signal is decoded to generate a decoded clock...
6782300 Circuits and methods for extracting a clock from a biphase encoded bit stream and systems using the same  
A method of extracting a clock from a biphase encoded bit stream includes the step of detecting a stream of samples each having a sample size measured between consecutive bit phase transitions. A...
6768433 Method and system for decoding biphase-mark encoded data  
A method and system for decoding a biphase-mark input stream is disclosed. Aspects of the present invention include receiving an external biphase-mark input stream by a receiver module; recovering...
6757341 Digital audio interface signal demodulating device  
In a digital audio interface signal demodulating apparatus (DDAp) that adds a preamble (PA) and additional information (V, U, C, P) to a digital audio signal (Sda) and demodulates into a digital...
6628212 State-driven over-sampling manchester decoder  
A method and apparatus for a state-driven decoder for decoding a Manchester encoded signal. The decoder comprises an input sampling stage, an over-sampling clock, and a digital logic state machine....
6549596 Fully digital phase aligner  
A fully digital phase aligner includes a control loop acting upon a delay line comprising at least a cascade of delay cells, each cell being individually configurable to produce one of two...
6539071 Frequency correction at the receiver end in a packet transmission system  
The invention relates to a system for transmitting packets from interactive terminals to a head station. The terminals intended for consumers are provided with local oscillators which are not very...
6449315 Serial line synchronization method and apparatus  
Apparatus, and an accompanying method, for transmitting a frame synchronization signal and a data signal simultaneously through a serial transmission medium ( 170 ). Specifically within a data...
6388717 Digital television transmitting system having data and clock recovering circuit  
A digital television transmitting system is presented having a recovery circuit for recovering non-return to zero (NRZ) data pulses and transport clock pulses from a biphase-mark serial data pulse...
6275679 Secure communication using array transmitter  
The radio transmission circuit comprises 16 antenna elements in a broadside array. A carrier wave is routed to the 16 elements and the phase to each element is adjusted to direct the transmitted...
6256359 RDS signal detection device  
Received signals are digitized by a comparator, and sampled by regenerated clock signals synchronized to a carrier. Biphase symbol data are demodulated based on the sampling data. A biphase decoder...
6249558 Method for transmitting digital data impulses  
Before digital data impulses are transmitted from a transmitter to a receiver that includes a data acquisition signal generator, at least one synchronizing impulse (syn1, . . . ) is transmitted for...
6249555 Low jitter digital extraction of data from serial bitstreams  
A low jitter method for extracting clock or data from a serial digital bitstream generates from a digital decoder a window signal from the serial digital bitstream by sampling the serial digital...
6236687 Decision directed phase locked loop (DD-PLL) for use with short block codes in digital communication systems  
An improved digital decision directed phase locked loop (DD-PLL) for use with short block codes using phase shifting keying (PSK) modulation. The improvement involves a conventional digital phase...
6204725 Circuit for demodulating digital signal undergoing different modulation schemes  
A circuit for demodulating a signal having a temporal mixture of different modulation schemes applied thereto includes a synchronization-word-detection unit which detects synchronization words...
6128112 Weighted-sum processing method and apparatus for decoding digital signals  
The method and associated apparatus of the present invention decodes digital signals by appropriately weighting the respective noise portions of the two phase segments generated by the detector,...
5999576 Delay-locked loop for data recovery  
A delay-locked loop which phase-locks the reference clock of crystal oscillation by certain identical delay units for generating certain precise time-sharing phase signals. These time-sharing phase...
5953063 Bi-phase code decoding system  
A horizontal period counter 3 determines one bit period of bi-phase codes by measuring the period of a horizontal scan line immediately preceding one containing bi-phase codes to be decoded. An...
5905759 Data decoding circuit, voltage-controlled oscillation circuit, data decoding system and electronic equipment  
A data decoding circuit of the present invention can regenerate a bit synchronization signal from a data received by using a code such as a split-phase code and Manchester code in which a binary...
5892797 System and method for recovering data encoded using manchester code and other bi-phase level codes  
A data and clock recovery circuit includes a front end circuit for receiving a data signal encoded with a Manchester or other bi-phase level code having a sequence of bit frames, and for outputting...
5889820 SPDIF-AES/EBU digital audio data recovery  
A circuit for decoding an input signal includes a measurement circuit having an input to receive a timing clock signal that is asynchronous with clocking of the input signal, to measure duration of...
5778031 Decoding circuit for bi-phase BPSK signal having a high noise immunity  
A bi-phase signal is output from BPSK demodulator; by a pair determining circuit and a clock reproducing circuit, a clock signal corresponding to a former half bit of two half bits constituting a...
5726650 Adaptive manchester decoding with adjustable delay and power saving mode  
A method and apparatus for recovering clock and data signals from a Manchester code is provided. The present invention uses a phase lock loop with a digital delay line wherein an adjustable delay...
5687193 Manchester coder/decoder  
The Manchester coder/decoder of the invention includes the following modules. A synchronization signal generation module (11), gives the clocks' start signal. A module (12) for the synchronization...
5636248 Method and system for regenerating amplitude and timing characteristics of an analog signal  
The present invention provides a system and method for using a single digzed component of an analog signal to be converted into a pair of digital signals used to re-establish the analog signal. A...
5570393 Digital audio signal demodulator  
A digital audio signal demodulator which demodulates an input digital audio interface format signal inputted with asynchronous serial bits to a non-return to zero (NRZ) signal, corrects error per...
5566212 Phase-locked loop circuit for Manchester-data decoding  
A phase-locked loop circuit recovering original clock information and original stream of binary data both from Manchester-coded data is disclosed. The phase-locked loop circuit comprises first,...
5521944 Circuit for a demodulator for a radio data signal in a radio receiver  
In a circuit for a demodulator of a radio data signal in a radio receiver, the multiplex signal in digital form is mixed into the baseband, in two phase positions shifted 90° with respect to each...
5491713 Minimized oversampling Manchester decoder  
A Manchester decoder and clock recovery circuit for recovering Manchester encoded data and a clock synchronized with the incoming data. The circuit uses an oversampling rate of eight times the data...
5475705 Demodulator for Manchester-coded FM signals  
Binary signals that are transmitted by Manchester coding and frequency modulation are demodulated based on the behavior of the phase or complex vector value of the received signal. The polarities...
5465268 Digital decoding of biphase-mark encoded serial digital signals  
A digital decoder for a biphase-mark encoded serial digital signal detects edges in the encoded serial digital signal by sampling with a sample clock to produce a blivet signal. The blivet signal...
5457423 Radio data signal demodulator with clock signal recovery  
For a demodulator for radio data signals, where transmission of these signals is carried out through phase shifting of a suppressed subcarrier, where a multiplex signal, which contains a signal...
5448594 One bit differential detector with frequency offset compensation  
A one-bit differential detector for a GMSK signal operates independently of an offset frequency. In particular, a decision signal used by a decision circuit to distinguish between logic "0" and...
5446571 Manchester code optical code recognition unit  
An optical code recognition unit (OCRU) for recognising a predetermined n-bit optical code sequence coded using the Manchester code format, has an n-way splitter (7) having an input and n parallel...
5438594 Device for demodulating digital signals modulated by an alternating modulation constellation technique  
A device for demodulating a signal modulated on two axes in phase quadrature using a π/4-QPSK type digital modulation technique employing alternately two phase-shifted constellations. The device...
5436591 Demodulator for radio data signals  
In a demodulator for radio data signals the transmission of which is made by phase-keying of a suppressed subcarrier the occurence of transient times is avoided in that the received signal of...
5414384 Demodulator for radio data signals  
In a demodulator for use in the Radio Data System (RDS) as defined by the European Broadcasting Union, transmission of these signals is carried out through phase shift modulation of a suppressed...
5399987 Bi-phase shift keying signal demodulation circuit for RDS receiver  
A bi-phase shift keying signal demodulation circuit for an RDS receiver receives RDS modulation signal and reproduces RDS data from the RDS modulation signal. The RDS modulation signal is produced...
5373534 Serial data receiving apparatus  
This serial data receiving apparatus is intended to realize the receiving process of serial data having an inferior SN ratio with a simple arrangement and at low cost. A one-bit length of the...
Matches 1 - 50 out of 178 1 2 3 4 >