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| Number | Title | Issue Date |
| 8144802 | Digital data encoding and decoding method and system Digital data encoding and decoding method and system is provided. The data encoding includes encoding a frame signal into a bit stream, including detecting a specific bit pattern in the bit stream when the frame signal is present, generating a control signal in resp... | 03/27/2012 |
| 7369598 | Ultra-wideband receiver and transmitter A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or throu... | 05/06/2008 |
| 7356423 | Apparatus and method for reading out a differential capacity with a first and second partial capacity An apparatus for reading out a differential capacity with a first and second partial capacity includes a first oscillator having a first frequency-determining element connectable to the first partial capacity and a second oscillator having a second frequency-determi... | 04/08/2008 |
| 7352771 | Data collision detection device and method A data collision detection device that includes a means for de-modulating at least one carrier signal corresponding to a received modulated subcarrier signal from at least one data transmitter to recover the subcarrier signal from the carrier signal. A microcontroll... | 04/01/2008 |
| 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, where a state of the pair of states is precharged at each pulse of a per... | 01/15/2008 |
| 7280602 | Microwave signal edge detector circuit for improved clock recovery A signal edge detector circuit is described for the detecting the signal transitions in a stream of microwave signals at a predetermined clock signal rate, particularly for OC-768 data streams. Selected transmission lines in the signal edge detector circuit reflect ... | 10/09/2007 |
| 7227918 | Clock data recovery circuitry associated with programmable logic device circuitry A programmable logic device (“PLD”) is augmented with programmable clock data recover (“CDR”) circuitry to allow the PLD to communicate via any of a large number of CDR signaling protocols. The CDR circuitry may be integrated with the PLD, or it may be wholl... | 06/05/2007 |
| 7212541 | Wavelength division multiplexed (WDM) ring passive optical network (PON) with route protection for replacement of splitter based passive optical networks A method and apparatus for low cost upgrading on demand of an optical fiber communication system without installing additional optical fiber and minimal installation of optical circuitry at destination and distribution terminals. The upgraded systems comprise an opt... | 05/01/2007 |
| 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 or equalization. ... | 04/17/2007 |
| 7197659 | Global I/O timing adjustment using calibrated delay elements A method transfers a signal from a transmitting device to a receiving device. The signal is output from the transmitting device using a driving circuit. A reference clock signal is received in the transmitting device. An output clock signal is generated according to... | 03/27/2007 |
| 7194059 | Method and apparatus for skip-free retiming transmission of digital information A skip-free retiming system and method for transmission of digital information in a plesiochronous data communication system is described. The system is capable of supporting an unlimited number of retimers in serial data path between a first and a last node. The re... | 03/20/2007 |
| 7161992 | Transition encoded dynamic bus circuit A transition encoded dynamic bus includes an encoder circuit at the input to the bus and a decoder circuit at the output to the bus. The encoder circuit generates a signal indicative of a transition at the input to the bus rather than the actual value at the input. ... | 01/09/2007 |
| 7151811 | Electric circuit for decoding a two-phase asynchronous data signal and corresponding decoding method, device for controlling equipment This invention relates to an electronic circuit for decoding an asynchronous two-phase data signal. According to the invention, such an electronic circuit comprises means for generating a decoding clock using a counter powered by an internal clock, and repeat... | 12/19/2006 |
| 7123678 | RZ recovery A data and clock recovery system adapted for use with RZ data. In one embodiment a phase detector provides phase information for low to high data signal transitions only. In another embodiment a clock recovered from rising transitions is mixed with a clock recovered... | 10/17/2006 |
| 7116709 | Communication method of contactless ID card and integrated circuit used in communication method The code system is realized by that a plurality of waveforms A and B each having duty ratios of 50% in which only any one of a rising edge and a falling edge is present are combined with each other, and “1” and “0” are allocated to the combined waveform. In ... | 10/03/2006 |
| 7095794 | Methods and apparatus for a spread spectrum modulated backscatter electronic shelf label system Techniques for an electronic shelf label (ESL) system which uses a digital modulation technique for a modulated backscatter uplink from an ESL to a communication base station (CBS) which utilizes pseudo-random sequences instead of a single continuous wave frequency.... | 08/22/2006 |
| 7072406 | Serial interface and method for transferring digital data over a serial interface A digital serial interface connects a transmitting device with a receiving device for communicating both data bits and synchronization signals via the serial interface. The transmitting device include a primary transmitter for converting a serial sequence of the dat... | 07/04/2006 |
| 7065217 | Apparatus and method for multichannel sound reproduction system The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived from the reception quality. Preferably, the control signal from the FM... | 06/20/2006 |
| 7049964 | RFID readers and tags transmitting and receiving waveform segment with ending-triggering transition RFID readers exchange information with RFID tags. The information is encoded for transmission and decoded upon reception. Encoding is in binary bits, which are in turn encoded in waveform segments. The last transmitted waveform incorporates an ending-triggering tran... | 05/23/2006 |
| 7016447 | Digital clock recovery PLL An apparatus comprising an analog circuit and a digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in response to a plurality of phases of a reference clock. The digital circuit may be configured to generate a... | 03/21/2006 |
| 7016448 | Synchronization state detector A system and method for reducing timing uncertainties in a serial data signal A system may comprise a transmitter configured to transmit serial data to a receiver through a transmission medium, e.g., wireless, wired. The receiver may comprise an oscillator configure... | 03/21/2006 |
| 6977966 | Bidirectional optical communications having quick data recovery without first establishing timing and phase lock A method of transmitting and rapidly recovering a burst of data without first having to establish a timing or phase lock. The signals are transmitted as modified Manchester coded signals having pulse transitions at a clocking pulse rate which is a multiple of the cl... | 12/20/2005 |
| 6968002 | Method and apparatus for time aligning data modulators using frequency domain analysis of detected output Method and apparatus for time aligning first and second signals. The second signal is modulated by the first signal to provide a third signal. Frequency components of the third signal are then determined, the frequency components being indicative of time alignment b... | 11/22/2005 |
| 6963628 | Multiphase retiming mechanism A system and method for reducing timing uncertainties in a serial data signal. A system may comprise a transmitter configured to transmit serial data to a receiver through a transmission medium. The receiver may comprise a retiming mechanism configured to sample the... | 11/08/2005 |
| 6952276 | Printer detecting data precisely in response to change in data transmission speed A printer, which is connected to a host computer, comprises a synchronizing signal output section for outputting a synchronizing signal to the host computer, a data detection section for detecting print data received from the host computer by using a sampling signal... | 10/04/2005 |
| 6950479 | DC offset compensation A method of estimating a DC offset value of a signal includes estimating a DC offset value of a preamble part of the signal using a pair of diodes (D1, D2) and a resistor (R) connected in parallel. During receipt of the data part of the signal, the dio... | 09/27/2005 |
| 6934102 | Encoding and decoding process and corresponding data detector A system provides two distinct solutions for encoding and decoding servo positioning data for a hard disk drive. A first solution includes: encoding each group of four bits of a pattern signal in a Matched Spectral Null (MSN) format through an intermediate rate 4/6 ... | 08/23/2005 |
| 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 signal. Then, a data transfer speed of the encoded data signal is determi... | 06/07/2005 |
| 6901127 | Method and apparatus for data recovery A method and apparatus for recovering data by a digital audio interface, where the data may be transmitted over a single transmission path in accordance with the AES3-1992 standard, begins by receiving a stream of biphase encoded data. The biphase encoded data is or... | 05/31/2005 |
| 6885716 | Encoding and decoding system A decoder that receives a Manchester encoded signal including a start of frame sequence followed by coded data values followed by an end of frame sequence. The decoder also includes a detector that detects the start of frame sequence and the end of frame sequence to... | 04/26/2005 |
| 6862317 | Modulation technique providing high data rate through band limited channels A digital data modulator is coupled to a source of a digital data signal. An encoder encodes the digital data using a variable pulse width code. A pulse signal generator generates pulses representing edges of the encoded digital data signal. A carrier signal generat... | 03/01/2005 |
| 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 timing information from the input stream; decoding the input stream t... | 07/27/2004 |
| 6636575 | Cascading PLL units for achieving rapid synchronization between digital communications systems A clock synchronization system for synchronizing a first communications device and a second communications device to enable digital communication there between. A first device generates a first clock signal Fa. A second device generates a second clock sig... | 10/21/2003 |
| 6597752 | Method for detecting a dotting sequence for manchester encoded data in a deep fading environment A method for a cellular telephone receiver to detect the presence of a dotting sequence for a Manchester encoded cellular signal in a deep fading environment, wherein the presence of a single edge transition during the mask pulse for a predetermined numbe... | 07/22/2003 |
| 6505032 | Carrierless ultra wideband wireless signals for conveying application data A method for conveying application data via carrierless ultra wideband wireless signals, and signals embodied in a carrierless ultra wideband waveform. Application data is encoded into wavelets that are transmitted as a carrierless ultra wideband waveform... | 01/07/2003 |
| 6498818 | Method and system for transmitting information by means of phase modulation A method and system for transmitting digital data by means of phase modulation is characterized in that the data are coded at the transmitting end with a code after the fashion of the Differential Manchester Code and are then phase-modulated, and in that ... | 12/24/2002 |
| 6487264 | RF modem apparatus An RF modem used with a host device for transmitting information to, and receiving information from, other host devices. Prior to a transmission, the information is Manchester encoded and transmitted by On/Off Keying. A superregenerative receiver circuit ... | 11/26/2002 |
| 6473469 | Local communication system and apparatus for use therein A local area network is based on a ring of twisted pair cable links (UTP), each carrying at least 1.4 Mbps gross data rate. Each station on the network includes an encoder and a following station includes a decoder for PSK (phase shift keying) modulated s... | 10/29/2002 |
| 6452980 | Encoding/decoding system for coherent signal interference reduction An apparatus is described for reducing coherent signal interference between at least two bit streams framed with a common clock signal. The apparatus includes an internal clock signal generated from the common clock signal and a Manchester encoder for enc... | 09/17/2002 |
| 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 transmitter (105), a frame synchronization signal, a clock signa... | 09/10/2002 |
