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| Number | Title | Issue Date |
| 8345714 | Cell search method and apparatus for asynchronous mobile communication system A cell search method and apparatus for an asynchronous mobile communication system are provided. A Secondary Synchronization Code (SSC) correlator despreads a signal at every slot boundary in accordance with a z-sequence to output a SSC correlation value. The signal... | 01/01/2013 |
| 7421029 | Impulse response shortening and symbol synchronization in OFDM communication systems A method for receiving at a receiver having a variable filter a transmitted signal that includes a periodic training signal. The method includes (a) receiving and sampling the transmitted signal at the receiver to produce a digital complex baseband signal; (b) filte... | 09/02/2008 |
| 7394801 | Cell search method suitable for initial cell search and target cell search A wireless device generates a peak profile for a primary synchronization channel (PSCH), and has a synchronization stage for performing code group identification and scrambling code identification. A first peak from the peak profile is chosen. The first peak has a f... | 07/01/2008 |
| 7336667 | Apparatus, method and program product to generate and use CRC in communications network The CRC for the CPS Header of an ATM AAL2 cell is generated by a CRC generator which uses the 8 bits of the CID field to generate partial 5 bits CRCs which are loaded in a first table. The 6 bits LI field and 5 bits UUI field are added to the partial 5 bits CRC to f... | 02/26/2008 |
| 7257134 | Method of pacing the synchronization of routing information in a data switching environment A method of synchronizing the information held in a switching database associated with a switching function of a data switching node, with a data network node identifier record associated with a management processor enabling a managed mode thereof is provided. An en... | 08/14/2007 |
| 7231221 | Channel access methods and apparatus in low-power wireless communication systems An access scheme in a communication system can deal with a mix of devices having different power constraints and different latency requirements and allow highly asymmetric latency behavior. Such a communication system may include a central control station that broad... | 06/12/2007 |
| 7230956 | Techniques for frame detection and word alignment A system receives input data frames that are configured according to a SONET or an SDH standard. The input data is converted to parallel data. The system provides groups of bits along parallel signal lines. In each group of bits, N contiguous bits in the group form ... | 06/12/2007 |
| 7116735 | Adaptive equalization apparatus and method A correlation between a received signal and a sync word signal is calculated. A window signal having a time span which is equal to an equalization range for an adaptive equalizer is defined. A power sum of the correlation output signal in each of window signals #... | 10/03/2006 |
| 7113779 | Carrier The transportation system, such a airplane, which comprises the cabin, the internal antenna system, and the external antenna system. The voice data and the non-voice data of a plurality of passengers located in the cabin are received via the internal antenna system ... | 09/26/2006 |
| 7007106 | Protocol and method for multi-chassis configurable time synchronization Systems and methods are disclosed for time synchronization of operations in a control system. Synchronization networks and devices are provided for transferring synchronization information between controllers in a distributed or localized control system, which is em... | 02/28/2006 |
| 6959013 | Communication network A transmitter for transmitting an intermittent sequence of messages to maintain synchronization between the transmitter and a receiver. The transmitter includes control apparatus which provides messages for transmission, each message forms part of a sequence of mess... | 10/25/2005 |
| 6865240 | Frame synchronizing circuit The frame synchronizing circuit establishes frame synchronization by detecting a sync pattern laid in an incoming frame. The frame synchronization circuit comprises a first frame synchronizing unit and a second frame synchronizing unit. The first and second synchron... | 03/08/2005 |
| 6791466 | Apparatus for providing wireless transmission of information in electronic display systems and methods of using the same An apparatus for providing wireless transmission of information in electronic display systems and methods of using the same. In particular, the present invention is directed to an air interface and protocol to facilitate wireless transmission of information from a c... | 09/14/2004 |
| 6781987 | Method for packet transmission with error detection codes A method is provided for transmission of packets (102) as a sequence of data packets (104). A redundancy or check word (106) is composed for each packet of the sequence of data packets. A transmission packet is composed of a packet, a check word... | 08/24/2004 |
| 6724837 | Timing estimation for GSM bursts based on past history A method and apparatus for estimating the timing position of data bursts received in a data stream, where each data burst includes a number of bits comprising a training sequence in a fixed location. The receiver includes circuitry for estimating the timing position... | 04/20/2004 |
| 6584124 | Method and system for accessing ports of a fixed-size cell switch The invention provides a method and system for accessing ports of a very high-speed, fixed-size cell switch fabric. It is aimed at permitting a tradeoff between the overall number of I/Os required to access all the switch ports, that must stay within the ... | 06/24/2003 |
| 6570935 | Method and system for demodulating a receive signal including a pilot signal In this demodulation method, a receive signal is demodulated estimating the fading distortion of data by detecting the fading distortion of unique word as pilot signal inserted into multiple sections of the receive signal. The method has the steps of: com... | 05/27/2003 |
| 6317425 | Data synchronizing method for radio multi-terminal communications system A data synchronizing method for a radio multi-terminal communications system including a cellular telephone and a PDA (Personal Data Assistant). Messages transmitted between the cellular telephone and the PDA are prioritized. The cellular telephone and th... | 11/13/2001 |
| 6160822 | ATM cell synchronization circuit An ATM cell synchronization circuit can be realized by a circuit construction operable at low speed. Cell strings developed into eight parallel strings by a serial to parallel development circuit are further developed into 8n parallel strings. A frequency... | 12/12/2000 |
| 6075831 | FIFO and system synchronization system and method A method for handling underflow and overflow of data in a FIFO buffer includes steps of inserting an insert data word in the FIFO buffer if there is an underflow of data at the FIFO buffer and discarding a discard data word of the FIFO buffer if there is ... | 06/13/2000 |
| 6011808 | Redundant codes for clock recovery in serial links The amount of jitter that results in a serial receiver having a parallel architecture Can is reduced by insuring that the edges specifically introduced by the code are actually received by the phase detector. In particular, the code is designed to increas... | 01/04/2000 |
| 5883929 | Synchronization method, and associated circuitry, for synchronizing a receiver with a transmitter A synchronization method and apparatus for synchronizing a receiver, such as a radiotelephone operable in a cellular communication system with a transmitter. Synchronization sequences are transmitted as parts of a control signal to the receiver. The synch... | 03/16/1999 |
| 5809093 | Apparatus and method of frame aligning information in a wireless telecommunications system A wireless telecommunications system (1) includes a central terminal (10) for transmitting and receiving radio frequency signals to and from a subscriber terminal (20). A downlink communication path is established from a transmitter (200) of the central t... | 09/15/1998 |
| 5778000 | Frame synchronization method A method for frame synchronization including the detection of an n-bit pattern with predetermined characteristics in a bitstream is described. The subject method includes the steps of extracting a first set of m bits, with m being smaller than or equal to... | 07/07/1998 |
| 5228065 | Arrangement for producing a synchronizing pulse A synchronizing pulse is produced upon detection of a frame codeword or frame-structured binary signal consisting of a first word repeated a plurality of times and at least one second word. A demultiplexer divides the incoming signal into n words which ar... | 07/13/1993 |
| 4727534 | Timing and carrier recovery in dual polarization communications systems A technique is disclosed for improving the recovery of data signals transmitted on orthogonally polarized carrier signals by creating redundancy with respect to timing and carrier information. In the receiver, the carrier and timing recovery circuitry, wh... | 02/23/1988 |
| 4677617 | Rapid frequency-hopping time synchronization A method is disclosed for synchronizing the operation of frequency hopping, spread spectrum communication devices in a network. One device (the "NTU") is deemed to be keeping the network time, to which the other devices must synchronize in order to commun... | 06/30/1987 |
| 4495619 | Transmitter and receivers using resource sharing and coding for increased capacity The present invention relates to transmitters and receivers in a digital time division multiple access (TDMA) communication system wherein the resource sharing concept is generalized by fully exploiting the available clear air carrier-to-noise ratio (CNR)... | 01/22/1985 |
| 4491943 | Method for transmitting time-sharing multidata A method for transmitting time-sharing multidata in which data series of a plurality of channels are time-sharing multiplexed to form a transmitting data series having the steps of adding error detecting or error correcting redundant bits and synchronizin... | 01/01/1985 |
| 4344180 | Redundant word frame synchronization circuit A frame synchronization arrangement is disclosed for use in a digital data transmission system which utilizes a redundant data word transmission. A selected data word of each frame of data having a fixed location relative to the frame boundary is transmit... | 08/10/1982 |
