89 results about "Receiver function" patented technology

Performance measurements for a network, such as delay, delay variation, and loss, are performed over layer-2. A PM frame is sent from a source MEP (Maintenance End Point) to a destination MEP. The PM frame is timestamped immediately prior to transmission, and the local clock at the destination MEP is noted immediately upon arrival. MIPs (Maintenance Intermediate Points) may also time stamp the PM frame. Preferably, each PM frame has an interval (session) identifier and a sequence number within the interval. The PM frames are received by and sent by PM modules within the nodes of the network. The PM modules include a Sender function for sending an interval of one or more PM frames and a Receiver function for receiving PM frames and computing measurements.

A system that allows service providers, consumer electronic (CE) manufacturers or standards bodies to define flexible security policies (110) for the execution of downloaded applications (120) on digital television (DTV) receivers (160). The current receiver environment in which a software application is to be run is evaluated. For example, environmental factors such as time of day, date, channel currently tuned in, parental lockout status, grouping of major and minor virtual channels, and so forth, may be considered. An access controller (168) determines if the receiver's environmental factors satisfy the conditions for granting a permission to a downloadable application to allow access to the receiver functions (161), receiver resources and user private data. The security policy can be modified by installing or downloading a new security policy (110), or modified by a user with the provision of an appropriate interface. A Java code-implemented embodiment is disclosed.

An active terminating device (30) for an electrical transmission line with optional line-receiving and line-driving capabilities. The basic device is a two-terminal unit, denoted as a Signal Canceling Unit (SCU), which sensesthe signal available at its terminals (34a, 34b), and applies negative feedback in order to cancel and absorb the signal. When applied to the end of a transmission line (15a, 15b) as part of wired communication network, the SCU functions as a terminator. When connected in the middle of such wired transmission line, the SCU splits the transmission line into two separate and isolated segments. In such a configuration, the SCU can be used to isolate a portion of a network from signal degradation due to noise or bridge-tap. Furthermore, the two isolated segments may each employ independent communications, such that no interference exists between the segments. In another embodiment, line receiver functionality is integrated into the SCU, designated as a Signal Canceling and Receiving Unit (SCRU) (90). The SCRU can perform all the SCU functions, and also serves as a line receiver in the communication network. In yet another embodiment, line driver functionality is integrated into the SCRU, designated as a Signal Canceling, Receiving and Transmitting Unit (SCRTU) (120). The SCRTU can perform all the SCRU functions, and also serves as a line driver in the communication network. Upon connecting multiple SCRTU's to a continuous transmission line, terminated independent point-to-point communication segments are formed.

The invention relates to the interaction between the electronic directory and sites cataloged therein. One embodiment of a directory system includes a first and second conduit, a receiver function and a global catalog. The first conduit runs between the directory and a first site and the second conduit runs between the directory and a second site. The receiver function accepts the first local catalog of directory information from the first site and the second local content catalog of directory information from the second site. The global catalog of directory information includes the first local catalog and the second local catalog.

The embodiments of the present invention provide a configurable homodyne/heterodyne RF receiver including first and second mixers. The configurable homodyne/heterodyne RF receiver functions as a homodyne receiver when the first and second mixers are configured to operate in parallel, and as a heterodyne receiver when the first and second mixers are configured to operate in series. The embodiments of the present invention further provides an RFID reader employing the configurable homodyne/heterodyne RF receiver to facilitate a listen-before-talk function.

A method for creating variants of a DTV service, a method which is simpler than the method defined in GBS0600, and the method can handle all use-case scenarios for simulcast linking in a way almost equal to that defined in GBS0600. The method introduces switching between a mother service and a variant service, the mother service being a default service to which a receiver should tune, and the variant service being a service selected at a receiver side and linked to the mother service by a service link defining a switching relation between the mother service and the variant service. The method is defined by including switching information into the data-stream of the mother service, receiving the mother service data-stream, reading the switching information, and switching from the mother service to the variant service accordingly. The switching information can be carried in EPG data and thus utilize existing data structures. EPG data of the mother service, e.g. in the form of EIT data, can be used to carry switching data, expect for variant service events different from the mother service, where the EPG/EIT data are preferably cross-carried by the mother and variant service. Preferably, the receiver selects which one of a plurality of possible variant service to switch to, e.g. based on receiver capabilities and/or user access rights. Thus, EIT carriage efficiency for services with a large degree of sharing is high, and it offers advantages in tuning speed. Further, the method will lead to simpler and consistent receiver implementations.

A method and apparatus for enhancing the receiving and information identification functions of multiple access communications systems by employing one or more optical processors configured as a bank of 1-D correlators. The present invention is particularly useful in a DS/SS CDMA communications system, resulting in a multiuser CDMA system that approaches carrier to noise performance (C/N) as opposed to being limited by multiple access interference (MAI). The correlators are arranged in parallel to detect and/or demodulate the received signal, in conjunction with one or more complex algorithms to perform near-optimum multiuser detection, perform multipath combining and/or perform carrier Doppler compensation. An improved receiver in accordance with the present invention comprises means for receiving a plurality of signals transmitted through a communications channel; signal conversion means for converting the received signals into a form suitable for input to the multichannel correlator; a multichannel optical correlator for identifying the presence of particular waveforms and estimating the relative time delay or delays, carrier frequency offset from expected, RF amplitude and RF phase for each received spread spectrum waveform present in the received plurality of signals; a controller for determining and providing to the optical correlator the appropriate set of reference hypotheses; and one or more receiver algorithms depending on the exact receiver function to be performed.

The invention provides a sound pipeline, a speaker assembly and a double-side sound production mobile phone. The sound pipeline comprises a sound pipeline body and a sound pipeline control element. A sound cavity is arranged in the sound pipeline. First openings, second openings and third openings communicated with the sound cavity are arranged on the outer surface of the sound pipeline body. The first openings are communicated with the sound production holes of the speaker. The second openings are communicated with front speaker sound holes on the electronic device. The third openings are communicated with side speaker sound holes on the electronic device. The sound pipeline control element is in slide match with the outer surface of the sound pipeline body, thereby sealing the second openings or the third openings. The sound pipeline, the speaker assembly and the double-side sound production mobile phone aim at realizing the fact that the speaker can be switched between a receiver function and a speaker function.

The present invention discloses a Bluetooth satellite receiver device powered by a cigarette lighter socket, which comprises: a cigarette lighter plug module, inserted into a cigarette lighter socket to obtain power from a vehicle; a power supply module, electrically coupled to the cigarette lighter plug module, and supplying power to the device; a satellite receiver module, electrically coupled to the power supply module; and a Bluetooth communication module, electrically coupled to the power supply module. The satellite receiver module receives the signals from a satellite in an orbit and then decodes the signals into a latitudinal and longitudinal information and sends the latitudinal and longitudinal information to the Bluetooth communication module. The Bluetooth communication module receives the latitudinal and longitudinal information and sends it out wirelessly. The user utilizes a portable electronic device having the Bluetooth receiver function to receive the abovementioned information. The present invention provides a resident vehicle Bluetooth satellite receiver device, which implements a Bluetooth portable electronic device to receive the information from a satellite for navigation or other GIS application.

The invention concerns a method for visual indication of the function of wireless receivers where a wireless signal is transmitted to a group of receivers, and where each receiver intermittently flashes a visual indicator when a wireless signal is received, whereby the intermittence and flashing of the visual indicators of the receivers are synchronized.

Aspects of a method and system for enabling simultaneous FM transmitter and FM receiver functions using an integrated Bluetooth Local Oscillator Generator (LOGEN). A Bluetooth® LOGEN may be utilized to generate Bluetooth® signal that comprise (I) and (Q) components for use in Bluetooth® communication. The Bluetooth® LOGEN may then be utilized by a DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® LOGEN may also be utilized by a second DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® signals may be kept at the same frequency, or reduced in frequency, for use in clocking the DDFS. A frequency word may also be utilized to clock the two DDFS. The outputs of each DDFS may be a constant frequency while the inputs to each DDFS may vary in frequency.

Performance measurements for a network, such as delay, delay variation, and loss, are performed over layer-2. A PM frame is sent from a source MEP (Maintenance End Point) to a destination MEP. The PM frame is timestamped immediately prior to transmission, and the local clock at the destination MEP is noted immediately upon arrival. MIPs (Maintenance Intermediate Points) may also time stamp the PM frame. Preferably, each PM frame has an interval (session) identifier and a sequence number within the interval. The PM frames are received by and sent by PM modules within the nodes of the network. The PM modules include a Sender function for sending an interval of one or more PM frames and a Receiver function for receiving PM frames and computing measurements.

A weighing cell has a fixed base portion, a load receiver constrained to the base portion, a permanent magnet with air gaps, a coil hanged in the air gaps and guiding flowing of a compensation current, and a force transmission connection located between the load receiver and the coil. An optoelectronic position sensor includes a light source, a light receiver, and a shutter vane, wherein the shutter vane is connected to the connection, midpoints of the light source and the light receiver limit a light axis, the light source and the light receiver are arranged to be face to face opposite the gap, and the shutter vane is movably arranged at a shutter vane distance between the light source and the light receiver. The light receiver functions to generate a position sensor signal corresponding to a deflection of the shutter vane from a zero position which occurs as a result of placing a load onto a load receiver. A controller functions to regulate compensation current, the shutter vane and the movable parts of the weighing cell connected to the shutter vane are returned to the zero position by the electromagnetic force between a coil and permanent magnet system. The shutter vane distance is located at a sub-segment of the gap, and the sub-segment is adjacent to the light receiver and extends along the gap being not more than 1/3.

A multi-function programmable transceiver is described. The transceiver includes a driver circuit and a receiver circuit, which allows an Application Specific Integrated Circuit (ASIC) device to drive and receive data from other ASIC devices. Both the driver and receiver circuits share a common input/output (I/O) pin. The driver circuit can be programmed to provide one of the several driver functions, such as CMOS, TTL, PCI, HSTL, SSTL and LVDS. Other functional features of the transceiver that can be programmed are driving strengths or output impedance, output power supply voltage, single ended or differential mode of HSTL/SSTL transceivers, and class 1 or class 2 operations for SSTL/HSTL transceivers. The receiver circuit can also be programmed to provide one of the several receiver functions, such as CMOS, TTL, PCI, HSTL, SSTL and LVDS.

Methods and apparatus are presented to allow one receiver architecture to be used for the reception of two different SDARS signals, such as, for example, one signal from XM Satellite Radio, the other signal from Sirius Satellite Radio. The methods and apparatus presented utilize common receiver functions to process each signal, thereby obviating the need to duplicate hardware elements. In exemplary embodiments of the present invention, it can be assumed that both signals will not be received at the same time, thus allowing for considerable hardware reuse and lowering the cost of an interoperable receiver. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Systems and methods are provided for worker protection. A safety vest may be configured to support worker protection receiver function in worker protection systems. Components used in conjunction with the receiver functions may be integrated into the safety vest. The components may include one or more antennas, radio receiver (or transceiver) circuitry, integrated power supply source, indication components, and acknowledgement components. The safety vest may generate safety alerts in response to receiving signals from peer transmitter devices in the worker protection systems.