6873 results about "Signal on" patented technology

An apparatus and a method of operating the apparatus. The apparatus includes a driver circuit and a memory circuit. The driver circuit may be configured to precharge a hitline in response to a predetermined voltage level and a control signal and sense a result of a compare operation based upon a hitline signal on the hitline. The driver circuit generally precharges the hitline to a voltage level lower than the predetermined voltage level and senses the result of the compare operation using the full predetermined voltage level. The memory circuit may be configured to perform the compare operation using the hitline.

A computer software application for end-to-end management of the delivery of IP-configured integrated multimedia signals (e.g., TV, video, Website, etc.), on an interactive basis, to a subscriber device (being a personal computer (PC) and monitor coupled thereto or television/set-top box combination). The system manager comprises an interactive program guide (IPG) component configured for providing to the subscriber an interactive program guide (IPG) permitting selection of the multimedia signals by the subscriber and a subscriber device component associated with the subscriber device and configured for receiving instructions from the subscriber. The subscriber device includes a decoder configured for converting the selected IP multicast format signals into a format for display on PC monitor or television. A PC component is configured for displaying the converted multimedia signals on the PC monitor in the form of a player window and for displaying a remote controller GUI on the monitor, the remote controller GUI being a model of a hand-held remote controller and controllable by the subscriber for controlling the selection of signals from the IPG. The interactive program guide provides drop down box selection and scroll bar GUI features.

A distributed antenna system (DAS) includes a multiple-input and multiple-output (“MIMO”) base station configured to output at least a first and second signal, and a hybrid coupler coupled thereto, the coupler configured to receive the first and second signal from the MIMO base station on respective first and second ports and provide an output signal on at least one output port, the output signal including at least a portion of the first signal and at least a portion of the second signal. The DAS further includes a master unit communicating with the coupler and configured to receive at least the output signal, and at least one remote unit communicating with the master unit and configured to communicate the output signal to a device.

A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of the antennas. A cancellation device can suppress antenna interference by generating an estimate of the interference signal and subtracting the estimate from the interference signal. The cancellation device can generate the estimate based on sampling signals on an antenna that generates the interference or on an antenna that receives the interference. The cancellation device can comprise a model of the crosstalk effect. Transmitting test signals on the communication system can define or refine the model.

A method and device which dynamically detects, tracks and filters interfering signals with sufficient speed (i.e. within one IS-95 CDMA data frame period, or 20ms and fidelity to eliminate or greatly reduce the deleterious effects of narrow band interferor signals on a CDMA link. When inserted in an RF signal path an Adaptive Notch Filter (ANF) detects narrow band interferors above a threshold level within the CDMA signal. Detection is accomplished by continuous scanning of a preset excision band, e.g. a specified narrow band associated with an AMPS system. Detected interferors are then automatically acquired and suppressed. This is achieved by electronically placing a rejection notch at the frequency of the interferors. Multiple notch filters may be used to simultaneously suppress multiple interferors. In the absence of interferors a bypass mode is selected allowing the RF signal to bypass the notch. Upon detection of an interferor, a switch is made to a suppression mode where the interferor is steered through a first notch section and suppressed. Alternatively, an external control line may be used to select the bypass mode so that the signal is allowed to pass the notch section, regardless of interferer content.

Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

The present invention provides a method and device for displaying a plurality of video signals on one single display. According to embodiments of the present invention a plurality of display systems can be replaced by one display system being fully backwards compatible without the need to change any software or hardware components such as application software, graphical boards, . . . The present invention can also guarantee that even though a plurality of displays are being replaced by one single display still individual characteristics of those plurality of displays are being retained by the new display.

A method for selecting an operating mode for a frame-based communications network consisting of a plurality of stations attached to a transmission medium. The plurality of stations include both a first type station and a second type station. The first type station is capable of transmitting and receiving first protocol frames in accordance with a first protocol. The second type station is capable of transmitting and receiving both first protocol frames and second protocol frames in accordance with a second protocol. The first protocol and the second protocol each use different signals on the transmission medium. The first type station is not capable of reliably detecting second protocol frames. The first protocol has a first protocol frame format containing at least two reserved bits in a first protocol frame header which are ignored in received frames by first type stations and always sent with a same fixed value by first type stations. The first protocol frame format is redefined to provide an updated first protocol frame header wherein two reserved bits in the first protocol frame header are allocated as a mode selection indicator field in the updated first protocol frame header. The mode selection indicator field has meaning for second type stations.

Disclosed are an automatic charging apparatus of an autonomous mobile robot and an automatic charging method using the same in that a moving robot can automatically detect infrared signals emitted from a charging station and can automatically induce charging station so as to automatically charge a battery of the robot, whereby improving convenience thereof. The automatic charging apparatus of the autonomous mobile robot, comprises a charging station having connecting terminals for charging the battery and an infrared signal generator for emitting infrared signals on a position information thereof; and a moving robot having an infrared receiving apparatus for receiving the infrared signals from the infrared signal generator in a cast that a remnant capacity of the battery is insufficient or a charging order is inputted, a microcomputer for controlling a traveling of the moving robot by using a detected position information of the charging station through the infrared signals received from the infrared receiving apparatus, and charging terminals for charging the battery with electricity through the contact with the connecting terminal.

A high frequency signal transmission apparatus includes a transmitter for transmitting received signals from a signal source as a modulated signal on a high frequency 900 MHz carrier to a remote receiver. The remote receiver converts the high frequency carrier in at least one conversion step to a lower frequency carrier signal. The lower frequency carrier signal carrying the modulated signal is then converted to another carrier signal and retransmitted as a modulated second signal to another remote receiver capable of demodulating the signal and broadcasting the audio sounds or video images. The oscillators in the transmitter and receiver are selectable to operate at discrete frequencies. Automatic fine tuning control is provided in the receiver to accommodate drift of the oscillator in the receiver. A recorder is coupled to the receiver for temporarily storing a demodulated first signal from the transmitter and then outputting the stored signals to a second transmitter for retransmission to a remote output device.

A physical layer module (PHY) of a network device includes a control module and a cable-test module. The control module selectively generates a cable-test enable signal to test a cable including four pairs of twisted wire. The cable-test module tests the cable based on the cable-test enable signal. The cable-test module transmits test signals on the four pairs at a first time and receives return signals. The cable-test module determines that the cable is not faulty when the return signals received on first and second pairs of the four pairs have an amplitude less than a first predetermined amplitude, and when the return signals received on third and fourth pairs of the four pairs have an amplitude greater than a second predetermined amplitude and are received substantially contemporaneously.

A control system for allowing remote control of a load. The control system includes a command controller for running a control program that provides a command signal. The command controller has a first wireless interface for transmitting the command signal on a first wireless network. A remote controller has a second wireless interface for receiving the command signals from the command controller via the first wireless network. The remote controller includes a controller for adapting the received command signals for communication on a second wireless network. The remote controller has a third wireless interface for transmitting the adapted command signals via a second wireless network to the load.

A method for identifying and localizing a reentrant circuit isthmus in a heart of a subject during sinus rhythm, including: a) receiving electrogram signals from the heart during sinus rhythm via electrodes; b) storing the electrogram signals; c) creating a map based on the electrogram signals; d) finding a center reference activation location on the map; e) defining measurement vectors originating from the center reference activation location; f) selecting from the measurement vectors a primary axis vector indicating a location of the reentrant circuit isthmus in the heart; g) finding threshold points of electrogram signals on the map; h) connecting the threshold points to form a polygon indicating a shape of the reentrant circuit isthmus in the heart.

Wireless communications for frequency-selective fading channels is realized by employing a system including orthogonal frequency division multiplexing (OFDM) in combination with an at least two antenna transmit diversity arrangement. Specifically, OFDM converts a multipath channel into a plurality of narrowband subchannels each having flat fading. Then, the signals on the same frequency subchannels of the at least two antennas are grouped together. Considering a first frequency subchannel, during a first OFDM time interval, a first signal and a second signal are transmitted on the first frequency subchannel from a first antenna (0) and from a second antenna (1), respectively. During a second OFDM time interval, a reverse sign (−) complex conjugate of the second signal and a complex conjugate of the first signal are transmitted from the first antenna and the second antenna, respectively. In a specific embodiment of the invention, reduced complexity in the implementation is realized by a reverse order complex conjugate and a reverse order, reverse sign (−) complex conjugate and judicious selection of the processed data signals in order to transmit the appropriate ones of the signals during the first and second OFDM intervals. Again, if the channel remains constant over the two OFDM intervals, diversity combination is realized for each frequency subchannel. In another embodiment of the invention, antenna-group hopping is employed in conjunction with pairing in time of the OFDM frequency subchannel signals to realize increased transmit diversity without rate loss.

A security system to create and maintain a secure communication link between a remote secure storage site and a law enforcement office using a continuous prearranged encrypted signal on the communication link. The authenticity of the encrypted signal is validated at the law enforcement office. Interruption of the encrypted signal is treated as an alarm that must be investigated. Sensors at the remote secure storage site detect intrusions and trigger the transmission of an alarm signal from the site to the law enforcement office on the communication link. The law enforcement office may enable video cameras or containment devices in the event of an intrusion.

A method and apparatus for operating an input device having an array of capacitive sensor electrodes and a proximity sensor electrode are disclosed herein. The input device includes a processing system communicatively coupled to the array of capacitive sensor electrodes and the proximity sensor electrode and configured to operate in an input mode and a proximity mode. When operating in the input mode, the processing system scans the array of capacitive sensor electrodes to detect input from an object in an active region of the input device. When operating in the proximity mode, the processing system drives a sensing signal on at least one sensor electrode of the array of capacitive sensor electrodes and receives a resulting signal from the proximity sensor electrode. Based on the resulting signal, the processing system generates an indication of an object presence in a second sensing region from the resulting signal.

According to a first aspect, there is provided a method for controlling uplink access transmissions in a radio communication system, wherein a user equipment determines a delay time for transmitting a signal on an uplink access channel, wherein the delay time is randomly determined based upon a probability distribution that increases in density with increasing delay. According to a second aspect, there is provided a method for controlling uplink access transmissions in a radio communication system, wherein from a base station of the radio communication system, time variable information is signalled in downlink to user equipments located in an area covered by the base station, wherein the information is used to determine delay times for transmitting signals on an uplink access channel and wherein the information varies based upon a probability distribution which increases in density with increasing time.

A mobile terminal that displays menu information along a trace may include a memory unit to store menu information; a touch screen including a touch panel, the touch screen to display the menu information; and a controller to control the touch screen to display at least a portion of the menu information on a trace according to a dragged input signal corresponding to the trace. A method for displaying menu information on a display includes storing menu information including a menu item and sub-menu items corresponding to the menu item, receiving a dragged input signal on the display, the dragged input signal beginning at a start point, and displaying the sub-menu items on a trace corresponding to the dragged input signal, the menu item arranged at the start point.

A method, communication apparatus, and machine-readable medium to transmit a downlink signal in a substantially non directional manner from a first communication station of a communication system on a first downlink conventional channel. The first communication station includes a smart antenna system having a plurality of antenna elements. The method includes providing a first set of sequential time intervals for the communication device for communication with its remote communication devices. One or more remote communication devices of the communication system known to the first communication station to be undesired remote communication devices transmit a signal on a first uplink conventional channel. The signals transmitted are received. In one version, they are received at the first communication station, and in another version, by another communication station of the communication system. The signal received are used to configure the smart antenna system for transmitting a downlink signal in a non-directional manner that includes mitigating interference towards the undesired remote communication devices on the first downlink conventional channel.

An ultrasound treatment system applies an ultrasound driving signal generated by an ultrasound driving signal generating section on an ultrasound treatment section, treats a treatment target living tissue with ultrasound vibration under observation by an observing section, and acquires, with an image acquiring section, an observed image of the living tissue being treated. A control section controls, for example, output of the ultrasound driving signal on the basis of a comparison result of the observed image and a reference image of the living tissue in a state in which mist does not occur.

An apparatus for deterministically killing one of redundant servers integrated into a network storage appliance chassis along with at least one storage controller is disclosed. Each server can generate a kill signal on a backplane of the chassis to the other server in response to a stopped heartbeat of the other server in order to disable the I/O ports of the other server on a network so the live server can reliably take over the identity of the other server on the network. Unlike conventional kill paths, such as an Ethernet cable connecting the two servers in separate chassis, the present invention does not require the failed server to be operational since the kill path is substantially a direct reset to the I/O ports of the failed server. One server raises a shield before killing the other server to avoid both servers killing each other simultaneously.

An integrated circuit with power conservation includes a number of functional blocks, each of which includes a digital circuitry and at least one output control line, and a power controller coupled to the control lines. The output control lines develop clock control signals based upon a functional block's knowledge of the direction of data flow. The power controller the reduces power by deactivating functional blocks that are not needed as indicated by the clock control signals. More specifically, a system with power conservation includes a number of functional blocks capable of processing data, each of the functional blocks including a modulated clock input and N+1 clock control lines which reflect the direction of data flow, where N is a number of neighbors of a particular functional block, and a clock controller having an input clock, the clock controller being coupled to the modulated clock inputs and the clock control lines of the functional blocks. The clock controller is operative to modulate the input clock in accordance with the signals on the clock control lines to provide modulated clocks to each of the plurality of functional blocks. A method for reducing power consumption includes the steps of: a) receiving control signals from a number of functional blocks; b) selectively deactivating a particular functional block upon a request from that functional block or from another functional block; and c) activating the particular functional block upon a request from another functional block.

Methods and systems for processing communication signals in an Orthogonal Frequency Division Multiple Access (OFDMA)-Passive Optical Network (PON) are disclosed. An optical carrier at a wavelength generated at an optical line terminal (OLT) may be reused by optical network units (ONUs) in the network for upstream transmission of data signals to the OLT. In addition, each ONU may perform carrier suppression to avoid broadband beating noise resulting from the simultaneous transmission of upstream data signals on the same wavelength. Further, the optical source at the OLT used to generate the optical carrier may be reused as a local oscillator for coherent detection of received upstream signals to minimize any frequency offsets.

An apparatus and method of reproducing a 2-channel virtual sound while dynamically controlling a sweet spot and crosstalk cancellation are disclosed. The method includes: receiving broadband signals, setting compensation filter coefficients according to response characteristics of bands and setting stereophonic transfer functions according to spectrum analysis; down mixing an input multi-channel signal into two channel signals by adding head related transfer functions (HRTFs) measured in a near-field and a far-field to the input multi-channel signal, canceling crosstalk of the down mixed signals on the basis of compensation filter coefficients calculated using the set stereophonic transfer functions, and compensating levels and phases of the crosstalk cancelled signals on the basis of the set compensation filter coefficients for each of the bands.

A mobile communication technology, and, more particularly, a method for efficiently transmitting data stored in a message 3 (Msg3) buffer and a user equipment for the same is disclosed. The method of transmitting data by a user equipment in uplink includes receiving an uplink (UP) Grant signal from a base station on a specific message, determining whether there is data stored in a message 3 (Msg3) buffer when receiving the UL Grant signal on the specific message, determining whether the specific message is a random access response message, and transmitting the data stored in the Msg3 buffer to the base station using the UL Grant signal received on the specific message, if there is data stored in the Msg3 buffer when receiving the UL Grant signal on the specific message and the specific message is the random access response message.

The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for sharing signals on a single channel, comprising setting up a new connection, allocating a new time slot if there is an unused time slot on a channel frequency, selecting an used time slot for the new connection to share with an existing connection if there is not an unused time slot on the channel frequency, and selecting a different training sequence code for the new connection if the used time slot on the channel frequency has been selected for the new connection to share with an existing connection.

A multi-hop wireless communication network is disclosed, which includes a fixed communication unit, at least one mobile communication unit, and a relay communication unit. The relay communication unit is operable to relay a plurality of signals bi-directionally between the fixed communication unit and the at least one mobile communuication unit, by receiving a first signal on at least one of a dedicated sub-carrier and a dynamic sub-carrier in a first downlink channel segment from the fixed communication unit, and transmitting the received first signal to the at least one mobile communication unit on a dynamic sub-carrier in a second downlink channel segment. Also, the relay communication unit is operable to receive a second signal on a dynamic sub-carrier in a first uplink channel segment from the at least one mobile communication unit, and transmit the received second signal to the fixed communication unit on at least one of a dedicated sub-carrier and a dynamic sub-carrier in a second uplink channel segment. Also, the fixed communication unit can allocate bandwidth dynamically or in a fixed amount in the first downlink channel segment, the relay communication unit can allocate bandwidth dynamically in the second downlink channel segment based on at least one Quality of Service value received from the at least one mobile communication unit, the relay communication unit can allocate bandwidth dynamically for the at least one mobile communication unit in the first uplink channel segment, and the fixed communication unit can allocate bandwidth dynamically or in a fixed amount for the relay communication unit in the second uplink channel segment.

A method and apparatus of wireless communication between a base station and at least one user equipment. The method includes: transmitting an enhanced physical downlink control channel from the base station to the at least one user equipment using a demodulation reference signal antenna port; transmitting message from the base station to the at least one user equipment which is scheduled by the enhanced physical downlink control channel; receiving the message at the at least one user equipment; determining at the at least one user equipment whether the message was correctly received; and transmitting an ACK/NAK signal on an ACK/NAK resource determined from the enhanced physical downlink control channel from the at least one user equipment to the base station indicating whether the message was correctly received by the at least one user.

A re-programmable gate logic includes a plurality of non-volatile re-configurable resistance state-based memory circuits in parallel, wherein the circuits are re-configurable to implement or change a selected gate logic, and the plurality of non-volatile re-configurable resistance state-based memory circuits are each adapted to receive a logical input signal. An evaluation switch in series with the plurality of parallel non-volatile re-configurable resistance state-based memory circuits is configured to provide an output signal based on the programmed states of the memory circuits. A sensor is configured to receive the output signal and provide a logical output signal on the basis of the output signal and a reference signal provided to the sensor. The reconfigurable logic may be implemented based on using spin torque transfer (STT) magnetic tunnel junction (MTJ) magnetoresistance random access memory (MRAM) as the re-programmable memory elements. The logic configuration is retained without power.

Improved pilot signal sequences which facilitate multiple channel quality measurements, e.g., through the use of different signal pilot transmission power levels, are described. In various implementations the transmitted pilot sequences facilitate determining the contribution of interference from other sectors of a cell using the same tones, e.g., in a synchronized manner, as the sector in which the pilot signal measurements are being made. To measure noise contributions from neighboring sectors a sector NULL pilot, e.g., a pilot with zero power, is transmitted in an adjacent sector at the same time a pilot signal with a pre-selected, and therefore known, non-zero power is transmitted in the sector where the received pilot signal measurement is made. To facilitate background noise measurements, a cell NULL is supported in some embodiments. In the case of a cell NULL, all sectors of a cell transmit a Null pilot, on a tone that is used to measure background noise. Since no power is transmitted in the cell on the tone during the measurement, any measured signal on the tone is attributable to noise, e.g., background noise which may include inter-cell interference.