Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8126103 | Frame synchronization using correlation between permuted sequences A permuted sequences combination uses a frame structure in which two sync words, each comprising M complex symbols, are appended at the frame start. One benefit is the reduction of the large variance of the timing estimation error in the conventional correlation met... | 02/28/2012 |
| 8094767 | Method and apparatus for timing and/or frequency synchronization in an RF receiver The present invention provides methods and systems for allowing a receiver in a (wireless) communication system to synchronize its timing and frequency subsystems in accordance with a received signal. In accordance with one aspect, a method is provided in which a re... | 01/10/2012 |
| 7483507 | Method for resynchronization of a mobile radio receiver in the event of a changeover between two different modulation methods When data bursts are transmitted between a base station and a mobile receiver, a changeover is made between a plurality of modulation methods during an existing radio link for modulation of the data. For resynchronization of the receiver in the event of the changeov... | 01/27/2009 |
| 7463709 | Method and apparatus for generating a synchronization sequence in a spread spectrum communications transceiver A novel and useful acquisition and synchronization mechanism for spread spectrum communication systems whereby a synchronization sequence comprising a plurality of known symbols spaced apart by predefined time delay intervals is transmitted as the start of packet si... | 12/09/2008 |
| 7428285 | Method for error compensation in an OFDM system with diversity A method provides for an improved compensation Fourier channel characteristics in a wireless communication embodiment. The method identifies one or more information carriers as pseudo pilot tones whose information may be realized to enhance the determination of the ... | 09/23/2008 |
| 7424078 | Synchronous compensator adaptively defining an enable range for synchronous compensation In the synchronous compensator, a load generator loads a bit counter with data in dependence upon whether or not a detection signal from a UW detector falls within the range indicated by an enable signal from a synchronous compensator circuit, thereby excluding the ... | 09/09/2008 |
| 7372928 | Method and system of cycle slip framing in a deserializer A method and system for cycle slip framing is disclosed. The method includes receiving an asynchronous signal and generating a synchronous pulse after receiving the asynchronous signal. The method further provides that the synchronous pulse be used to affect a bit s... | 05/13/2008 |
| 7369600 | Burst communications apparatus and method using tapped delay lines A communications apparatus and method use tapped delay lines as multiplexers and demultiplexers. In one embodiment, a receiver (100) uses a tapped delay line (110) as a demultiplexer to acquire a burst communication at very high data rates in the range... | 05/06/2008 |
| 7349381 | Synchronization technique for spread spectrum frequency hopped data links and radios using the same A method of obtaining coarse synchronization in a frequency hopped/direct sequence spread spectrum (FH/DSS) time division multiple access (TDMA) data link network includes tuning the receiver to a first frequency used in the data link network. Then, signal strength ... | 03/25/2008 |
| 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 detecting unit for detecting synchronism data indicating synchronism est... | 02/26/2008 |
| 7333468 | Digital phase locked loops for packet stream rate matching and restamping A packet stream multiplexer may include one or more control loops (e.g., digital phase locked loops) for tracking the source clock frequency associated with a packet stream. A first control loop may slowly drive an error between a received timestamp and an estimated... | 02/19/2008 |
| 7330524 | Joint synchronization and impairments estimation using known data patterns Synchronization and impairment estimations can be performed jointly, thereby saving valuable time for decoding of the received packet. An initial synchronization in a TDMA system can be performed. Using this synchronization, the frequency offset choices and timing o... | 02/12/2008 |
| 7315566 | Mobile communication system, channel synchronization establishing method, and mobile station A mobile communication system 1 according to the present invention comprises base station 30 and mobile station 10. The base station 30 sends a pilot symbol sequence known to the mobile station 10, to the mobile station 10, ... | 01/01/2008 |
| 7305237 | Hole-filling channel access Channel access techniques are provided for use in a high throughput wireless network that utilizes multiple wireless channels within a single service set. ... | 12/04/2007 |
| 7305051 | Optimum training sequences for wireless systems In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using various sets of training symbols that produce zero cross-correlation... | 12/04/2007 |
| 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 for detecting a communications frame start signal (unique word ... | 11/20/2007 |
| 7293705 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 11/13/2007 |
| 7295526 | Method of transmitting information between two units each provided with means for sending and/or receiving signals The method is one of wireless transmission of information between two units consisting primarily of a portable object, such as a personalized watch (1), and a computer station (20). Each unit includes signal transmitting and/or receiving means (2, 2... | 11/13/2007 |
| 7289473 | Pilot reference transmission for a wireless communication system A pilot reference transmission scheme well suited for high data rate wireless communication systems is disclosed. To maximize the amount of interference from transmissions from neighboring transmission sources (e.g., access points or base stations) during the pilot ... | 10/30/2007 |
| 7280515 | Method and arrangement for implementing fast signalling in an asymmetric communication connection A method and an arrangement are disclosed for implementing fast signalling in a communication connection between a base station and a mobile station of a cellular radio network. There is defined an arrangement of repeatedly occurring frames that consist of pieces of... | 10/09/2007 |
| 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 (pulse signal) indicative of a transfer clock with which the slave unit i... | 08/21/2007 |
| 7260167 | Method and apparatus for synchronization of a bit stream for long latency date detection A method is for decoding a bit stream from a waveform representing the bit stream, having a first synchronization mark, data, and a second synchronization mark. Digitized samples are decoded to form a reconstructed bit stream. The reconstructed bit stream is then st... | 08/21/2007 |
| 7258276 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 08/21/2007 |
| 7242696 | Digital TDMA link with no sync word The portion of TDMA frames otherwise containing the sync word is eliminated for one or more data frames at the end of a TDMA data burst to provided added bandwidth for data payload or for a reduced bandwidth. Once a communication channel has been established and is ... | 07/10/2007 |
| 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 |
| 7215210 | Clock signal outputting method, clock shaper and electronic equipment using the clock shaper A clock signal outputting method in which either a clock signal based on a signal from the outside or an alternative clock signal from a fixed oscillator is selected and outputted, wherein, when the clock signal is selected to be outputted, the fixed oscillator is p... | 05/08/2007 |
| 7209764 | Apparatus and method for receiving channel signal using space time transmit diversity scheme in code division multiple access communication system Disclosed is an apparatus and method for receiving a channel signal using a STTD (Space Time Transmit Diversity) scheme in a CDMA communication system. In the CDMA communication system a transmitter with first and second antennas STTD (Space Time Transmit Diversity)... | 04/24/2007 |
| 7206597 | Transmission apparatus and auto gain control method A transmission control section 101 temporarily stores a transmission signal, outputs the stored transmission signal to a coding section 102 and outputs transmission timing information to a counter section 107. A preamble insertion section 104... | 04/17/2007 |
| 7202914 | Digital television transmitter identification system using pseudo-random sequences The invention relates to a transmitter identification system, which utilizes an identification signal embedded into a digital television signal, enabling the transmitter of origin to be identified at a receiving station. Ideally the identification signal is an ortho... | 04/10/2007 |
| 7199989 | Digital protection relay with time sync function In a digital protection relay with a time sync function, the sampling timing of which is specified based on a reference timing transmitted from a time signal generator to a time sync unit, with a determination value. The time sync unit includes a reception circuit t... | 04/03/2007 |
| 7190745 | Radio-controlled timepiece, standard frequency reception method, and electronic device The receiver receives the standard frequency signal that includes a time code. A sampling unit samples one bit of the received signal at 32 positions. A smoothing unit smoothens the result of sampling by dividing the 32 positions in two to four intervals and determi... | 03/13/2007 |
| 7165720 | Radio frequency identification method and system of distributing products A method and system for vending products from a defined area, such as a micro-warehouse with a door. The method includes fitting each product with a radio frequency identification tag, positioning the plurality of products in a micro-warehouse, sensing opening and c... | 01/23/2007 |
| 7167640 | Method and apparatus for efficiently allocating memory in audio still video (ASV) applications A dynamic allocation of available ASV buffer memory space is performed on each pack in a DVD-A bitstream one pack at a time. Concurrently, an ASV buffer table is updated for each type of data pack currently being processed. The ASV buffer table includes pointers cor... | 01/23/2007 |
| 7158541 | Signal synchronization method and receiver device for packet communication A receiver device for a packet communication system receives a packet signal appended at its head with a known number (N) of repetition signals. A correlation value of a received signal is outputted from a normalizing correlator and compared with a threshold value i... | 01/02/2007 |
| 7151812 | Sample clock extracting circuit and baseband signal receiving circuit A sample clock extracting circuit comprises including a number-of-change point memory, a number-of-change point updating circuit and an output clock phase determining circuit. The number-of-change point memory stores a number-of-change-point information set every N ... | 12/19/2006 |
| 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 |
| 7113541 | Method for software driven generation of multiple simultaneous high speed pulse width modulated signals Systems and methods can provide, in one aspect, a method for modulating the pulse width of control signals generated on a plurality of separate channels. In one practice, the methods described herein are suitable for execution on a microprocessor or micro controller... | 09/26/2006 |
| 7113783 | System for transmitting and receiving short message service (SMS) messages A system for accessing broadcast SMS messages over a wireless communication system. A base station transmits SMS messages periodically and aperiodically over a broadcast channel. The base station allocates periodic slots in the broadcast channel for each of the subs... | 09/26/2006 |
| 7085246 | Method and apparatus for acquisition of a spread-spectrum signal An apparatus for acquiring a pseudo-random (PN) sequence timing for a code division multiple access (CDMA) radiotelephone. A buffer stores samples of representations of at least one pilot signal. A correlator coupled to the buffer is operable to correlate at least a... | 08/01/2006 |
| 7085252 | Cell search method, communication synchronization apparatus, portable terminal apparatus, and recording medium A power threshold value (12) is set to be compared with a correlation power value detected by a correlator (2) and a power conversion section (4). As a result of comparison by a comparator (13), only the correlation power values that exce... | 08/01/2006 |
