2185 results about "Data transmission systems" patented technology

An inductively coupled power and data transmission system include a main power source, apparel having an electrical conductor in electrical communication with the main power source, the apparel having a first inductively couplable power and data transmission sub-system to regulate power to the primary coil or coils and transmission of power and data by the primary coil or coils and reception of data by the primary coil or coils, and an independent device having a second inductively couplable power and data transmission sub-system so as to regulate reception of power and data by the secondary coil or coils and transmission of data from a secondary processor by the secondary coil or coils. The first and second primary coils transfer said power and data during inductive coupling, at electromagnetic radiation frequencies, between the first primary coil or coils and the secondary coil or coils.

Athletic performance monitoring systems include components for sensing performance data and/or displaying desired information to users. Electronic interface systems facilitate transfer of the data from the performance sensing system to a display device, e.g., to enable the display of athletic performance data on an electronic display device, including conventional electronic display devices that are known and commercially available (e.g., cellular telephones, PDAs, pagers, beepers, MP3 or other audio players, radios, portable televisions, portable DVD players, other video playing devices, watches, etc.). The sensing systems, as well as any data transfer systems associated therewith, may be included as part of an article of footwear, an article of clothing, a piece of athletic equipment, or the like, or even included as part of the interface device.

A data transmission system includes a reader transceiver and one or more tag transceivers. The reader transmits an activation signal to a tag. The tag selectively transmits a response signal to the reader at a specific time determined by a detected level of communications channel activity. The detector operates in a low-power standby state until the time it receives the activation signal, and then operates in an active state. The invention further incorporates a technique to maintain an extremely low power state to the tag during quiescent mode while retaining full sensitivity to reader activation signals. The reader transceivers are of a modular architecture with each module operating independently, yet in concert with the others. The modules are interconnected in a media independent method and can interact remotely with other modules.

The invention relates to a method and to a device for the authorization in data transmission systems employing a transaction authorization number (TAN) or a comparable password. According to a first step, the user sends a qualifying identification of the data input apparatus together with a request for the generation or for the selection of a transaction authorization number TAN or of comparable password from a data file from the data input apparatus to an authorization computer. In a second step the authorization computer generates the transaction authorization number TAN or the comparable password or selects them form a data file. According to a third step, the authorization computer sends the transaction authorization number TAN or the comparable password over a second transmission path different from the first transmission path to a monitor, for example a pager. According to a fourth step, the user reads this transaction authorization number TAN or the comparable password from the receiver and enters the transaction authorization number TAN or the comparable password into the data input apparatus. According to a fifth step, this transaction authorization number TAN or the comparable password is transmitted to the authorization computer. According to a sixth step, the authorization computer verifies the validity of the transaction authorization number TAN or of the comparable password in order to establish or switch free, according to a seventh step, a connection between the data input apparatus and the receiver unit.

Even in a state in which the remaining capacity of a battery decreases, an apparatus operation is appropriately executed while charging efficiency of the battery is maintained.

A processing unit 103 has a first operation mode in which an operation is enabled using only external power from a feeding device 120 and a second operation mode in which the operation is enabled by feeding from a battery 102 in addition to the external power from the feeding device 120. When the remaining capacity of the battery 102 is sufficient, the processing unit 103 executes an apparatus operation in the second operation mode. However, when the remaining capacity of the battery 102 decreases, the processing unit 103 changes an operation mode to the first operation mode and executes charging of the battery 102 while continuously executing the apparatus operation.

Systems and methods are provided that use a mobile robotic device (120, 220, 800) to transport rechargeable batteries (322, 422, 530, 570, 610, 722) between a base station (110, 600, 700), which charges the batteries, and a battery operated device (130, 230, 300, 400, 500, 550), such as battery powered kiosk (400) or signage system (300), which uses a charged battery as a power source. After traveling to a battery operated device, the mobile robotic device removes any discharged batteries from the battery operated device and installs a charged battery. The mobile robotic device then travels to the base station and attaches the discharged battery to the base station for recharging. The mobile robotic device may be configured to perform other transfers, such as data transfers and paper transfers. In addition, the mobile robotic device may be configured to perform a photographic and spatial survey of the isles, retail shelves, and surrounding environment for various purposes, such as generating three-dimensional store models and remote viewing.

Methods and apparatus for use in a network including a local server coupled to a central server, the local server being coupled to a plurality of network devices, for interactively controlling from one of the plurality of network devices a flow of audio visual data from the central server to the network device, comprising obtaining a control command at the network device, the control command indicating a desired modification to the flow of the audio visual data from the central server to the network device. The control command is sent from the network device to the central server via the local server. A modified flow of the audio visual data is then received from the central server at the network device in response to the control command.

[Problems] To realize a reliable and stable transfer of digital data that does not require a reference clock and a handshake operation.

[Means for Solving the Problem] The present invention provides a digital data transfer method for alternately and periodically transferring first information and second information respectively in a first period and in a second period, wherein: an amount of information of the first information per unit time in the first period is greater than an amount of information of the second information per unit time in the second period; and the second information in the first period is transferred as pulse-width-modulated serial data.

A method for optimizing data transmission in a data transfer system is provided where the data transfer system includes a transmitting device that transmits data to a receiving device through a switch. The method includes monitoring data transfer congestion in a buffer of the switch. The monitoring includes marking the data when data transfer congestion is detected. If data transfer congestion is detected, the method includes marking an acknowledgement (ACK) data after the marked data is received by the receiving device. The method further includes transmitting the ACK data from the receiving device to the transmitting device. The method also includes adjusting a data transfer rate between the transmitting device and the receiving device based on data transfer congestion. Monitoring data transfer congestion includes marking the data according to a probability corresponding to a percentage of time that the buffer is full.

A fiber optic transceiver adapted for use in an optical fiber data transmission system is capable of detecting reflection problems in fiber optic links and providing information related to the distance to the point of reflection. The fiber optic transceiver contains a fiber interface, a receiver, a transmitter, and a microcontroller. The microcontroller controls the transmitter to modulate the laser power to transmit impulse test data and the transceiver includes circuitry and microcode to detect reflection due to fiber connection problems. This enables trouble shooting during installation and/or reconfiguring the connection automatically, in response to a connection problem, and provides a physical layer link.

Non-video game computer user interfaces utilize human foot action to generate input for controlling the interface (e.g., a graphical user interface). Computer systems that use such input may include: (a) at least one input system including one or more sensing devices for sensing action by one or more feet; (b) a data transmission system for transmitting the sensed foot action to (c) a processing system that utilizes the foot action input to provide control data input for a user interface; and (d) an output device for producing a non-video game computer output based, at least in part, on data provided by the processing system. The control data relating to the foot action is used, at least in part, for controlling a user interface associated with the computer output.

The invention discloses an area road network traffic safety situation early warning system and a method thereof. The system comprises monitoring equipment, a data transmission system, a data process system and an early warning system. The method comprises the following steps: acquiring data information of road traffic, meteorology, illegal behaviors, and accidents through the monitoring equipment; sending the data information through the data transmission system; carrying out a multiple heterogeneous treatment on the acquired data information through the data process system, and merging data of the same kind; analyzing and assessing early warning grade through the early warning system, and determining and publishing a early warning scheme. Thereby road network traffic safety situation information can be comprehensively grasped, and dangerous source existing in the road network can be discovered timely to determine an early warning grade and generate an intelligent early warning countermeasure. Pertinence, instantaneity and validity of a measure of a road traffic management department actively preventing traffic accidents are improved. Technology support is provided in the invention to reduce area road network traffic risk factor and prevent major and extraordinarily serious road traffic accidents.

A transmitter apparatus 1 transmits transfer data having a predetermined amount to a receiver apparatus. The apparatus 1 includes: a data packet generating section 132 dividing the transfer data into multiple divisional data sets; an error detection/correction code adding section 133 adding an error detection code (error detection information) by which an error in the divisional data sets is detected to each of the divisional data sets; and a transmitter section 14 transmitting the multiple divisional data sets to which the error detection code is added all together. Thus, data transfer is very reliable. It takes less time to transfer data.

Embodiments of the present invention are directed to a one-way data transfer system with built-in data verification mechanism, comprising three nodes (Send Node, Receive Node, and Feedback Node) wherein (1) the three nodes are interconnected with each other by a one-way data link, and (2) the Feedback Node is designed solely for processing and relaying data verification information from the Receive Node to the Send Node. In these embodiments, the Send Node is capable of verifying the status of data it transferred to the Receive Node over a one-way data link without sacrificing the unidirectionality of data flow in the system and thereby compromising the level of security provided by use of one-way data links.

A data transmission system uses a method of aligning a plurality of transmission lanes with a plurality of reception lanes in a time-division multiplexing arrangement. The method utilizes a plurality of control symbols and lane identifiers that are transmitted on each of the transmission lanes during link initialization and training. The control symbols and lane identifiers are time-division multiplexed onto a data link and subsequently demultiplexed onto the plurality of reception lanes. One of the reception lanes is monitored for receipt of a control symbol followed by a lane identifier. Upon receipt, a lane identifier is compared to the identity of the reception lane being monitored. If the received lane identifier does not match the identity of the reception lane being monitored, the assignment of the reception lanes is rotated.

A data transmission system using a pair of complement signals (STROB/STROB#) as an edge-aligned strobe signal and input/output buffers therein. Several data signals and a pair of STROB/STROB# signals are transmitted from a data output device to a data input device therein. These data signals and the STROB/STROB# signals are edge-aligned and transmitted through the same transmission architecture. The data input device includes several data comparators for generating output signals from the received data signals using the received STROB/STROB# signals as a dynamic reference voltage. In addition, the data input device further includes several comparators and delay elements for generating a pair of non-inverting/inverting latch clock signals from the STROB/STROB# signals. Each of the output signals is sent to two data latch circuits for outputting two latched data based on the latch clock signals.

Methods and apparatus for designing spherical lattice codebooks for use in data transmission systems are provided. A spherical lattice codebook is constructed by determining the channel statistics of one or more channels, which can be accomplished by observing a sufficiently large set of channel realizations. After determining the channel statistics, an expression for the error probability of the decoder or expressions for bounds on the error probability and expressions for the corresponding gradients are determined. The gradient is then used in an optimization technique to produce a spherical lattice codebook which is subsequently used for transmission.

A system providing an inductive power and data link between an external transmitter and miniature internal receiver is presented. The system is suited to applications where the receiver must be of a small size and the system must consume very little power, such as an implanted biomedical device. The system is also compatible with systems where bi-directional communications are required. The novel transmitter and receiver form an improved forward data telemetry system. The transmitter consists of a Class-E converter with its optimum operating frequency being synchronously, instantaneously and efficiently altered in accordance with the data to be transmitted, thereby producing an FSK modulated magnetic field of substantially constant amplitude. The constant amplitude output allows for the continuous, data-independent transfer of power to the miniature receiver and its associated electronics. The present invention also represents an improvement over the high efficiency Class-E converters previously patented by the inventors. The receiver consists of a coil and an integrated rectifying system to recover operating power from the incident magnetic field, as well as an FSK demodulator whose operation is based on the multiphase comparison of charging times of integrated capacitors. The described FSK demodulator approach removes deleterious effects resulting from low-frequency changes in the transmitter frequency, and eliminates time distortion artifacts generated by circuit imbalances and asymmetries in the power recovery process. The combination of the transmitter and receiver improvements yields a reliable data transfer system unaffected by circuit imbalances and incidental variations in the amplitude and frequency of the magnetic field.

A system for bidirectional communication of digital data between a central unit and a remote unit wherein the need for tracking loops in the central unit has been eliminated. The central unit transmitter generates a master carrier and a master clock signal which are used to transmit downstream data to the remote units. The remote units recover the master carrier and master clock and synchronize local oscillators in each remote unit to these master carrier and master clock signals to generate reference carrier and clock signals for use by the remote unit receiver. These reference carrier and clock signals are also used by the remote unit transmitters to transmit upstream data to the central unit. The central unit receiver detects the phase difference between the reference carrier and clock signals from the remote units periodically and adjusts the phase of the master carrier and master clock signals for use by the central unit receiver to receive the upstream data.

A data transmission system is provided for transmitting user data to and receiving data from a communication channel, including a parity check matrix having M tiers, wherein M≦2, Dmin=2*M for M=1 . . . 3 or 2*M≦Dmin≦6 for M>3, wherein Dmin is the minimum Hamming distance, tc=M, wherein tc is the column weight, and cycle−4=0. A linear block encoder encodes the user data in response to the parity check matrix, and a transmitter transmits an output of the linear block encoder to the communication channel. A soft channel decoder decodes data, and a soft linear block code decoder to decode data decoded by the soft channel decoder in response to the parity check matrix.

Broadband data transmission systems and methods that provide point-to-multipoint broadcasting capability to implement Internet access and multimedia distribution services for a very large number of users. An exemplary system comprises a two-way communication link having at least one satellite, at least one user terminal that has two-way communication with the two-way communication link, and at least one gateway that has access to data and has two-way communication with the two-way communication link. The two-way communication link may comprise a low bandwidth two-way communication link, or a low bandwidth request link and high bandwidth data broadcast link. The high bandwidth link preferably broadcasts a wide area coverage beam to allows the requested information to be received by many terminals. The terminal and gateway may each include a cache. Software at the gateway operates to deliver requested data and related data to users using the user's request history and/or user profile. The requested (and related) data (such as a predetermined number of most-requested web pages) may be broadcast at predetermined intervals to simulate real-time broadcasts. Another exemplary system comprises a terrestrial communication link for communicating data requests, a satellite broadcast link for transmitting the requested data, at least one gateway having access to data that communicates with the terrestrial communication link and the satellite broadcast link, and at least one user terminal that communicates with the terrestrial communication link and the satellite broadcast link that caches the requested (and related) data transmitted by the satellite broadcast link. Broadband data transmission methods are also disclosed.

Various embodiments of the present invention provide systems and methods for media defect detection. For example, a data transfer system is disclosed that includes a data detector, a defect detector and a gating circuit. The data detector provides a soft output, and the defect detector is operable to receive the soft output and the data signal, and to assert a defect indication based at least in part on the soft output and the data signal. The gating circuit is operable to modify the soft output of the detector whenever the defect indication is asserted.

A method of transferring data among computers coupled to a switch device is described. The switch device is configured to switch an access between the computers. In this method, data is received from a first computer and transferred to each clipboard of the computers by the switch device by a first user command.

A secured data transfer system (10) and method is disclosed in accordance with an embodiment of the invention that enables sensitive data to be securely exchanged from a user/client's mobile device (12), phone, personal digital assistant (PDA), or the like to a back-end host (28), flowing through many hops and points in an public network, for example the Internet and/or in applications such as service provider's wireless networks, without being exposed to any security gaps in between servers. The system and method provides a secure solution that plugs the gaps and ensures a true end-to-end, bank-grade secured transaction exchange between the user/client's mobile device (12) and the back-end host (28) and using caching method for network traffic data reduction techniques.

A variety of bi-directional data transmission systems that facilitate communications between a plurality of remote units (15) and a central unit (10) using a frame based discrete multi-carrier transmission scheme are disclosed. In each of the systems, frames transmitted from the plurality of remote units (15) are synchronized at the central unit (10). A variety of novel modem arrangements and methods for coordinating communications between a plurality of remote units (15) and a central unit (10) to facilitate multi-point-to-point transmission are disclosed. The invention has application in a wide variety of data transmission schemes including Asymmetric Digital Subscriber Line systems that includes the transmission of signals over twisted pair, fiber and/or hybrid telephone lines, cable systems that includes the transmission of signals over a coaxial cable, and digital cellular television systems that include the transmission of radio signals.

Methods and control systems are provided for a wellbore drilling system having an active differential pressure device (APD device) in fluid communication with a returning fluid. The APD Device creates a differential pressure across the device, which reduces the pressure below or downhole of the device. In embodiments, a control unit controls the APD Device in real time via a data transmission system. In one arrangement, the data transmission system includes data links formed by conductors associated with the drill string. The conductors, which may include electrical wires and/or fiber optic bundles, couple the control unit to the APD Device and other downhole tools such as sensors. In other arrangements, the data link can include data transmission stations that use acoustic, EM, and/or RF signals to transfer data. In still other embodiments, a mud pulse telemetry system can be used in transfer data and command signals.

A method of controlling an encoding (bit) rate and a method of transmitting video data, and an encoding (bit) rate controller for a video encoder and a video data transmission system employing the methods, wherein the number of bits is allocated to a current picture on the basis of previous encoding results without defining a relation between an encoding rate and the distortion, the limited number of bits is not forced when features of the current picture are different from those of the previous pictures, and a quantizer scale is set adaptively to various features of the current picture without using an additional number of bits corresponding to variation of the quantizer scale, so that it is possible to improve the picture quality of video data to be displayed on a monitor by using such real time variable bit-rate control.

A transmission control unit (12) of a transmitting station (10) specifies usable plural transmission paths (20). A data supply unit (11) transfers movie contents file encoded by MPEG 4 to plural divisional distribution encoders (13) corresponding to the specified plural transmission paths (20). The respective divisional distribution encoders (13) divide movie contents file into plural divisional distribution data in which original data file can be restored by carrying out synthesis. Further, the transmitting station (10) transmits divided respective divisional distribution data through transmission paths different from each other. Respective receiving units (31) of a receiving station (30) respectively receive divisional distribution data from the plural transmission paths (20). A linking decoder (32) synthesizes plural divisional distribution data to restore original movie contents file. Thus, high speed transfer of contents file of large capacity can be carried out.

Multi-carrier point-to-multi-point CDMA system implementation reduces hardware changes in legacy single-carrier systems. The number of common downlink channels, such as timing/synchronization and paging channels, is reduced by designating an anchor carrier for transmitting these channels. Procedures for adding carriers and carrier acquisition are simplified through common carrier timing, signaling by the network to the user equipment (UE) of timing offsets and scrambling code selection, and other measures. Channel reuse is employed to minimize changes in asymmetric systems with different numbers of uplink and downlink carriers. Channel Quality Indicator (CQI) field is divided into multiple subfields to enable transmission of multiple CQIs and ACK/NACK indicators on one uplink carrier.; Joint and separate scheduling schemes are shown for concurrent scheduling of a data stream transmission to a UE via multiple downlink carriers.

Systems and methods of performing a simplified data transfer are provided. For example, a simplified data transfer system may include two or more devices configured to perform a simplified data transfer. The first device may be configured to save and transfer data associated with applications open on the first device. When the second device initiates communication, the first device may automatically send the open application data to the second device.