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| Number | Title | Issue Date |
| 7995622 | Digital clock smoothing A method for digital clock smoothing is provided. The method comprises: (A) inputting an asynchronous data stream having an asynchronous symbol rate into a FIFO two-port memory block; (B) obtaining FIFO depth B by subtracting modulo B for each stored symbol a symbol... | 08/09/2011 |
| 7986717 | System, apparatus, and method for increasing resiliency in communications A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fi... | 07/26/2011 |
| 7936792 | Method and circuit for asynchronous transmission The present invention relates to serial asynchronous transmission of data of fixed length in which a start bit and a stop bit are inserted at the head and tail, respectively, of the data. The insertion of a fixed bit having a predetermined logical value every predet... | 05/03/2011 |
| 7688863 | Methods and apparatus for sharing network bandwidth Methods and apparatus for sharing network bandwidth between devices connected to a bus are presented. Each of the devices belongs to one of a number of device classes. Each device class is associated with a respective data transfer rate at which information may be e... | 03/30/2010 |
| 7613211 | Digital clock smoothing apparatus and method A method for digital clock smoothing comprising: (A) inputting an asynchronous data stream having an asynchronous symbol rate into a two-port memory block; (B) accumulating a plurality of symbols of the asynchronous data stream in the two-port memory block for a pre... | 11/03/2009 |
| 7596154 | Method and device for synchronisation in OFDM A method of synchronizing an Orthogonal Frequency Division Multiplexed (OFDM) IEEE 802.11a data packet at a receiver is disclosed. The 802.11a data packet has a series of short training sequence (STS) symbols as a preamble. Cross-correlation at the receiver of the S... | 09/29/2009 |
| 7570667 | System, apparatus, and method for increasing resiliency in communications A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fi... | 08/04/2009 |
| 7372874 | Method and device for synchronisation in OFDM A method of synchronising an Orthogonal Frequency Division Multiplexed (OFDM) IEEE 802.11a data packet at a receiver is disclosed. The 802.11a data packet has a series of short training sequence (STS) symbols as a preamble. Cross-correlation at the receiver of the S... | 05/13/2008 |
| 7336598 | Guard interval length control method in OFDM system and OFDM transmitting and receiving apparatuses A guard interval length determining apparatus in an OFDM (orthogonal frequency division multiplexing) system, includes a signal supply section and a guard interval length determining section. The signal supply section outputs a reception signal and a delayed recepti... | 02/26/2008 |
| 7336681 | Data format and data transfer A signal format that can be accessed, as a file, by the computer on which it is stored is provided with a plurality of concatenated content packages. The content package comprises System, Picture, Audio and Auxiliary Items. The System, Picture, Audio and Auxiliary I... | 02/26/2008 |
| 7321588 | Serial control of radio frequency integrated circuits A serial controller for use in controlling various radio frequency (RF) modules within an RF integrated circuit is disclosed. The serial controller is coupled to an serial bus that internal to the RFIC that transmits commands and data from a microcontroller to a dat... | 01/22/2008 |
| 7319659 | OFDM receiver, mode detector therefor, and method for processing OFDM signals A method of mode detection for OFDM signals. The method comprises the steps of delaying the OFDM signal for a first and second number of samples, multiplying the two delayed signals by coefficient signals, and deriving a sum of the two products, deriving an error si... | 01/15/2008 |
| 7310393 | Method and apparatus for synchronization of the OFDM systems A method and apparatus for the signal synchronization of an orthogonal frequency division multiplexing system includes a delay conjugate multiplication module, a phase processor and an edge detector. It provides estimates for the boundaries of inter-symbol interfere... | 12/18/2007 |
| 7289540 | Method and apparatus for aligning timing intervals across communication system channels Techniques for aligning timing intervals across channels of a communication system, where each of the channels includes a number of cyclically-recurring time slots, each of the timing intervals includes one or more of the time slots, and each of the channels has one... | 10/30/2007 |
| 7272301 | Reproduction apparatus, reproduction method, recording apparatus, recording method, AV data switching method, output apparatus, and input apparatus In jumping reproduction, when an MPEG transport stream processed by the jumping reproduction is decoded and displayed, many noises occur in the video and the audio corresponding to the vicinity of the jumping. Provided are: a hard disk section 208 of r... | 09/18/2007 |
| 7227834 | Synchronizing pulse generating method and method of receiving OFDM signal In an OFDM receiver, a synchronisation pulse for defining a Fast Fourier Transform window is generated by examining the output of a correlator to find a sub-interval within which there is maximum correlation between samples of the symbol separated by the length of t... | 06/05/2007 |
| 7227876 | FIFO buffer depth estimation for asynchronous gapped payloads A desired FIFO buffer fill level is continuously derived during mapping or demapping of plesiosynchronous data signals into synchronized data signals, or vice-versa. One of j predefined integer values Ii is repetitively consecutively produced during each ... | 06/05/2007 |
| 7194548 | Data transmission apparatus, receiving apparatus, and sending apparatus A data transmission apparatus for conveying proper timing information to the destination application without embedding such information in transmission data packets. Particularly, the apparatus comprises a timing component for generating and inserting additional tim... | 03/20/2007 |
| 7194055 | Frame synchronization device, communication terminal apparatus using this device and frame synchronization method According to the present invention, there is disclosed a frame synchronization device which detects a time point to start a data frame from a received signal. Here, the received signal is constituted by disposing the data frame following a preamble period constitute... | 03/20/2007 |
| 7190691 | Method of controlling timing for uplink synchronous transmission scheme A method of controlling timing for an uplink synchronous transmission scheme is disclosed, including combining time alignment bit (TAB) information transmitted received during a predetermined period, determining a timing renewal value based on the combination, and c... | 03/13/2007 |
| 7180914 | Efficient asynchronous stuffing insertion and destuffing removal circuit A digital communications system that can asynchronously map/de-map digital signals from one clock domain to another, while reducing mapping jitter levels and permitting higher levels of integration. The digital communications system includes an asynchronous stuff bi... | 02/20/2007 |
| 7133423 | Maintaining synchronization between frame control word and data frame pairs in a home network A method and system for maintaining synchronization in a home network is disclosed. The home network includes a host ethernet media access controller and an HPNA chip, where control frame and data frame pairs are transferred between the host ethernet media access co... | 11/07/2006 |
| 7099352 | System, apparatus, and method for increasing resiliency in communications A transmitting system inserts runt abort packets in an outgoing data stream during idle time inter-frame time fill. The runt abort packets cause the receiving system to synchronize itself to the transmitting system so that even if an error during inter-frame time fi... | 08/29/2006 |
| 7093266 | Stream class driver for computer operating system A stream class driver for use in a computer operating system functions together with a minidriver. The minidriver is associated with a particular design for an adapter, which is a hardware device that generates or receives streaming data. The stream class driver dea... | 08/15/2006 |
| 7076392 | Test bit-stream generator and method for decoders The present invention provides a test bitstream generator and method for generating test bitstreams to test a bitstream decoder that is arranged to decode bitstreams generated in accordance with a predefined syntax. The method comprises the steps of generating test ... | 07/11/2006 |
| 7058006 | OFDM communication apparatus Synchronization symbol insertion section 102 inserts a synchronization symbol into a signal digital-modulated by modulation section 101. 0 symbol insertion section 103 inserts a 0 symbol into the signal with the synchronization symbol inserted. ... | 06/06/2006 |
| 7050449 | Communication method and communication apparatus The problem is to facilitate alteration of a transmission line in the case where the target device establishes a connection on the bus and thereby secures a transmission line in order to transmit stream data in a network of the IEEE 1394 scheme or the like. Stream d... | 05/23/2006 |
| 7039293 | Method and electronic equipment for transmitting data to other electronic equipment on a network A data transmission method in which an equipment receiving data is prohibited from displaying a noisy picture or issuing an unusual sound which might possibly destruct a speaker. When the operating mode is switched from the stop state (Stop) to the playback state (P... | 05/02/2006 |
| 7031348 | Apparatus and method of splicing digital video streams A splicing system includes a splicer for seamlessly splicing togther digitally encoded data streams. In a preferred embodiment, the splicer preferably parses successive splice buffers of data stream data for a splice-out point and a splice-in point, closing an initi... | 04/18/2006 |
| 7024685 | Transport demultiplexor with bit maskable filter The preferred embodiment of the present invention provides an improved transport demultiplexor that can receive and filter different data types before sending the data to system memory. The preferred embodiment provides a string comparator to facilitate real time fi... | 04/04/2006 |
| 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 |
| 7003407 | Circuit for detecting and formatting data frames The invention concerns non-contact smart cards and, more particularly in such cards, a circuit for detecting data frames and providing them with a parallel format for their processing. The invention is characterised in that it consists in using the information conta... | 02/21/2006 |
| 6999406 | Reception synchronization apparatus and demodulating apparatus using the same A reception synchronization apparatus capable of achieving precise synchronization of an OFDM signal including a frame guard added to the OFDM signal includes a multiplier for calculating the correlation between a received OFDM signal and an OFDM signal delayed by a... | 02/14/2006 |
| 6961393 | In-band-on-channel (IBOC) system and methods of operation using orthogonal frequency division multiplexing (OFDM) with timing and frequency offset correction An OFDM receiver recovers an rf signal as in-phase (I) and quadrature phase (Q) components of a baseband signal sampled in an A/D converter. The I and Q components of a received symbol are correlated at all sampling points. Correlation values are averaged over the l... | 11/01/2005 |
| 6956873 | Arrangement for deriving a local clock in a packet cable telephony modem A broadband terminal interface unit for use in an HFC communication network includes a phase-locked loop for providing a smooth transition between a CMTS-provided “national” clock and a local clock when the CMTS clock is lost (or before it is required). By contr... | 10/18/2005 |
| 6941151 | Transmitting apparatus, receiving apparatus, and communication system for formatting data A transmitting apparatus, a receiving apparatus, and a communication system are provided that allow a reduction in a frame loss due to interference caused by use of the same channel. A transmitting apparatus disposed in a base station includes a GPS receiver for rec... | 09/06/2005 |
| 6882661 | System for detection of asynchronous packet rates and maintenance of maximum theoretical packet rate A system transfers a data stream including data packets separated by non-packet words from a first clock domain to a second clock domain. It includes an elasticity buffer into which the data stream is written in a cyclic sequence under the control of the clock frequ... | 04/19/2005 |
| 6804265 | Apparatus and method interface improvement for digital circuits An apparatus comprising a parallel arrangement of circuits is described. Each circuit has a data net input. Each circuit has an indication signal net input configured to transport an indication signal having shapes and/or temporal locations different than a data sig... | 10/12/2004 |
| 6785353 | Synchronization loss detection in a V.34 receiver A method for detecting synchronization loss of the trellis minimum path metric in V.34 modem communications. The invention detects synchronization loss due to bit inversions in trellis decoding in transmitted digital frames due to a periodic inversion pattern that i... | 08/31/2004 |
| 6760346 | Packet switching network A packet switching network which allows the duration of guard time of each packet to be reduced to a minimum and the transmission efficiency of the network to be increased is disclosed. The sending nodes send the packet switch packets each having a guard time added ... | 07/06/2004 |
