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Class 340/2.2 - Channel selecting matrix


Subclass of Class 340 - Communications: electrical
Definition: Subject matter wherein a communication line is selected
No. of patents: 121
Last issue date: 09/09/2008


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NumberTitleIssue Date
7424011Rearrangeably nonblocking multicast multi-stage networks
A rearrangeably nonblocking multicast network includes an input stage having r1 switches and n1 inlet links for each of r1 switches, an output stage having r2 switches and n2 outlet links for each of r2
09/09/2008
7274692Method and apparatus for routing packets that have multiple destinations
A node includes input ports that are configured to receive packets from other nodes or from devices coupled to the node and output ports that are configured to send packets to other nodes or devices. Scheduling logic may control how packets that are received via the...
09/25/2007
7261701Skin antiseptic composition dispenser and methods of use
Skin antiseptic composition dispensers and methods of use are disclosed. The skin antiseptic composition dispenser may include a container with one or more walls that are substantially impermeable to ethylene oxide gas during normal ethylene oxide sterilization proc...
08/28/2007
7240233Hybrid parallel/serial bus interface
A hybrid serial/parallel bus interface has a data block demultiplexing device. The data block demultiplexing device has an input configured to receive a data block and demultiplexes the data block into a plurality of nibbles. For each nibble, a parallel to serial co...
07/03/2007
7225273Interface apparatus provided between two remote control systems having different transmission modes
In an interface apparatus provided between a first remote control system of polling communication system and a second remote control system of contention communication system, a control section executes at least one processing of the following processings based on m...
05/29/2007
7224624Page buffer for nonvolatile semiconductor memory device and method of operation
Disclosed is a page buffer for a nonvolatile semiconductor memory device and a related method of operation. The page buffer includes a unidirectional driver between a loading latch unit used for storing a data bit in the page buffer and a bitline used to program a m...
05/29/2007
7177309Packet switching equipment and switching control method
A packet switching equipment and a switch control system employing the same performs operation of the switch core portion independent of content of decision of an arbiter portion and overall equipment can be constructed with simple control structure. The packet swit...
02/13/2007
7064628Crossbar switch
A crossbar switch comprises a number of crossing points at which controllable switch elements are arranged, via which an input signal supplied to a row can be interconnected to a column intersecting this row at this crossing point when an interconnection signal is s...
06/20/2006
7050763Method and device for transferring a signal from a signal source to a signal sink in a system
The system has at least two electronic units between which signals are transferred from a first electronic unit and a second electronic unit. The first electronic unit has a signal source. The second electronic unit has a signal sink. A signal to be transferred is c...
05/23/2006
7042895Method and apparatus for interfacing multiple communication devices to a time division multiplexing bus
A time division multiplexing (TDM) method and apparatus for interfacing data from communication channels to a TDM bus. The TDM arrangement uses a shift register to control a tri-state buffer. The shift register regulates the tri-state buffer based on a data bit patt...
05/09/2006
7023817Method and apparatus for source device synchronization in a communication system
A communications method including the steps of: activating a plurality of signal sources, and transmitting a synchronization event to the plurality of signal sources to cause the plurality of signal sources to simultaneously transmit data in response to the synchron...
04/04/2006
7002981Method and arbitration unit for digital switch
In a data switching system, the ingress and egress ports of a memoryless cross-bar switch are controlled by an arbitration method. The arbitration method uses a three phase process involving (i) a request phase in which each ingress port sends its connection request...
02/21/2006
6998958Remote control system for a vehicle
A remote control system for precisely identifying a distance from the vehicle to an entry key and favorably controlling a vehicle-mounted device such as a door corresponding to the distance. The system comprises a transmitter transmitting different types of response...
02/14/2006
6995656Switching device comprising local decoding means
The invention relates to a switching device comprising a plurality of inputs and outputs which are interconnected by a matrix of interconnection points for transmitting electric signals supplied from the inputs to the outputs via transmission lines in accordance wit...
02/07/2006
6982974Method and apparatus for a rearrangeably non-blocking switching matrix
A switching apparatus is disclosed that employs a relatively simple and inexpensive switching matrix, but which avoids interruption of existing connections when connections are added or removed. The switching matrix switches errorlessly by controlling the point in t...
01/03/2006
6981090Multiple use of microcontroller pad
A circuit arrangement permits a microcontroller wirebond pad to be configured to be an analog or digital input or output. The circuit arrangement uses any of a plurality of switching configurations to selectively determine the use of the wirebond pad under control o...
12/27/2005
6970983Multiple port system and method for controlling the same
A multiple port system includes a plurality of port devices, each port device including a control register set, and a control bus coupled to the plurality of port devices. The control bus provides a control signal to each port device, and the control signal includes...
11/29/2005
6965299High-speed, low-power crossbar switch
In a crosspoint switch, both input buses and output buses are driven at low swing. Self-timed, differential, push-pull, low swing driver circuits drive the input buses and are provided in the crosspoints to drive the output buses. Clocked, regenerative sense amplifi...
11/15/2005
6965959System and method for introducing proprietary signals into a standard backplane via physical separation
A system and method for introducing user-defined (e.g., proprietary) signals into a standard backplane. A front side backplane portion is provided with a set of connector holes that are electrically separated from corresponding connector holes provided on the backpl...
11/15/2005
6958973Output queuing method for forwarding packets in sequence
A output queuing method for forwarding the packets sequentially in a switching network. Each port is related to a port output queue and a global output queue is shared by all port output queues. A FIFO (First In First Out) block is allocated into each port output qu...
10/25/2005
6954527Network configuration control method and network configuration control unit
A network configuration control method and a configuration control unit enable configuration reservations of a network. Simultaneous reservation of opening and closing of a network section is performed if the same network section is not in operation at the time of o...
10/11/2005
6947439Ethernet cross point switch with reduced connections by using dual control to the cross points in the switch
One embodiment of the present invention is an arrangement for establishing connectivity between the inputs and outputs of n ports in a switching system includes first and second matrices of cross points and a control circuit. The first matrix includes n×n cross poi...
09/20/2005
6885669Rearrangeably nonblocking multicast multi-stage networks
A rearrangeably nonblocking multicast network in accordance with the invention includes an input stage having r1 switches and n1 inlet links for each of r1 switches, an output stage having r2 switches and n2 out...
04/26/2005
6842104SYSTEM LSI AND A CROSS-BUS SWITCH APPARATUS ACHIEVED IN A PLURALITY OF CIRCUITS IN WHICH TWO OR MORE PAIRS OF A SOURCE APPARATUS AND A DESTINATION APPARATUS ARE CONNECTED SIMULTANEOUSLY AND BUSES ARE WIRED WITHOUT CONCENTRATION
A cross-bus switch apparatus which establishes simultaneously two or more pairs of connections between (i) a source bus arbitrarily selected from a plurality of source buses connected to one or more source apparatuses and (ii) a destination bus arbitrarily selected ...
01/11/2005
6816129Multiple display device for use with existing personal computer systems
A method and apparatus for adapting a single computer to drive at least two displays is disclosed. In one embodiment, an apparatus for adapting a single computer to drive at least two displays is disclosed. The apparatus comprises a controller, coupled between a use...
11/09/2004
6816057Segmented crosspoint switch array
A switch for routing input signals from any of N input terminals to one or more of M output terminals includes a high-speed N×M crosspoint switch array providing the necessary signal paths. Each of a set of N input drivers buffers a separate one of the input signal...
11/09/2004
6778065Remote control system for a vehicle
A remote control system for precisely identifying a distance from the vehicle to an entry key and favorably controlling a vehicle-mounted device such as a door corresponding to the distance. The system comprises a transmitter transmitting different types of response...
08/17/2004
6691202Ethernet cross point switch with reduced connections by using column control buses
A method for communicating from a source port (i) to a destination port (j) is employed within a switching system that has m ports, each of the ports being coupled to a local area network via a Hub. The connectivity between the inputs and outputs of the m...
02/10/2004
6653929Method of determining network paths in a three stage switching matrix
In a three stage non-blocking switching matrix (10), there are originating stages (12), center stages (14), and terminating stages (16). In order to establish matrix connections for either a one input/two output scenario or a two input/one output scenario...
11/25/2003
6646984Network topology with asymmetric fabrics
Enhanced performance is realized in a multi-fabric/multi switch group interconnect network by providing asymmetric fabric topologies wherein at least one link between a user-port and a switch-port (or between a pair of switch ports) is different in the fa...
11/11/2003
6639523Resistive keyboard with status keys
An arrangement of a plurality of status keys in a keyboard for entering information in an electronic device. The keyboard comprises a plurality of regular keys connected to a resistive strip at a plurality of locations for providing a first signal when on...
10/28/2003
6525650Electronic switching matrix
A high density electronic switching matrix (ESM) includes several splitting modules (200) arranged along a first axis, each including a signal input (202) and several splitter outputs (204). The ESM (500, 600) further includes several switching modules (4...
02/25/2003
6449274Apparatus for high speed communication system
Methods and devices useful in high-speed scalable switching systems include a memoryless switch fabric, per virtual channel queuing, digital phase aligners, randomized and complement connection modes, a mid-point negative acknowledge and output negative a...
09/10/2002
6445705Method for a high speed communication system
Methods and devices useful in high-speed scalable switching systems include a memoryless switch fabric, per virtual channel queuing, digital phase aligners, randomized and complement connection modes, a mid-point negative acknowledge and output negative a...
09/03/2002
6392544Method and apparatus for selectively activating radio frequency identification tags that are in close proximity
A radio frequency identification exciter (200) includes a plurality of antenna elements (122a-i) that are spaced to define active areas (130a-e). A matrix switch (202) flexibly connects the plurality of antenna elements to an exciter circuit (203). Indepe...
05/21/2002
6388557Telecommunication system for remotely controlling electronic devices
An electronic signal communication system for processing remote signals to be conveyed from a subscribed transmitting client to a subscribed receiving client. Several transmitters, each having first and second inputs, are linked with remotely located sets...
05/14/2002
6307852Rotator switch data path structures
Several rotator switch architectures are provided that enhance performance of a basic rotator switch. The rotator switches having double buffered tandem nodes, multiplexing two or more sources onto each tandem node, partitioning the rotator into two or mo...
10/23/2001
6297731Vehicle remote control system having keyless entry and piggyback control features and associated methods
A vehicle control system includes a data communications bus, a remote keyless entry (RKE) system, and a piggyback controller at the vehicle for performing a desired function based upon predetermined RKE signals generated on the data communications bus by ...
10/02/2001
6295282Calibrated low loss radio frequency switch matrix
A system for switching radio frequency signals from an input side (5, FIG. 1 ) to an output side (6) can be used to combine multiple input signals to form a single output and to distribute a single input signal to form multiple outputs. Gain correction am...
09/25/2001
6285677Switching matrix for a communications network
In a switching center having input and output lines, a switching matrix includes primary switching elements, bus structures for respectively connecting one subset of input lines to the primary switching elements, and at least three assemblies each having ...
09/04/2001
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