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Assignee: Microsemi Corp. - Analog Mixed Signal Group Ltd.


Location: Hod Hasharon, IL
No. of patents: 27

NumberTitleIssue Date
7849343Pre-detection of powered devices
A method and apparatus for preventing harmful transients resulting from a probing routine for a valid powered device detection signature in a network, the method comprising: operating power sourcing equipment to provide via its output port a pre-detection output vol...
12/07/2010
7813752Power control subsystem for powering a node over communication cabling
A power control subsystem for controlling the supply of power transmitted to at least one node over communication cabling, the power control subsystem comprising circuitry to control current of a power transmitted over communication cabling, the circuitry being oper...
10/12/2010
7800876Fault detection mechanism for LED backlighting
A fault detection mechanism for a LED string comprising a plurality of serially connected LEDs, the fault detection mechanism comprising: a control circuitry; and a voltage measuring means, in communication with the control circuitry, arranged to measure the voltage...
09/21/2010
7761633Addressable serial peripheral interface
An addressable SPI bus and an associated communication protocol. The addressable SPI bus comprises a plurality of slaves each exhibiting a particular address and a shift register whose output is connected to a common MISO bus by a buffer exhibiting a three state out...
07/20/2010
7681052Enhanced classification for power over ethernet
A method of classification of power requirements in a power over Ethernet system, the method comprising: providing a first classification voltage for a first classification cycle time, the provided first classification voltage being within a classification voltage r...
03/16/2010
7623608Asynchronous data reception without precision timing reference
A method of asynchronous data reception, the method comprising: receiving a plurality of calibration bits having a bit rate; sampling the received calibration bits at a sampling rate, the sampling rate being in excess of the bit rate; determining, responsive to the ...
11/24/2009
7622697Brightness control for dynamic scanning backlight
A method of controlling the luminance of a luminaire on an individual frame basis, without affecting a slow acting color loop controlling the color temperature of the luminaire, the method comprising: receiving a reference value representative of a target color; rec...
11/24/2009
7509114Redundant powered device circuit
A redundant powering system for a powered device receiving power over communication cabling, the redundant powering system comprising: a redundant power supply comprising a first power sourcing equipment and a second power sourcing equipment; a powered device; commu...
03/24/2009
7500121System and method for obtaining configuration information based on detected parameters of a remote device
A system for remote identification comprising: a power sourcing device; a power ready patch panel comprising a first resistive element and at least one of a second resistive element, a multi-bit storage device and an open connection; a first electrical path between ...
03/03/2009
7484109Computer volatile memory power backup system
A system for placing and maintaining a computer in a standby mode during power failure, utilizing one of: a powered device controller exhibiting a maintain power signature functionality and arranged to receive power over communication cabling; and a MEMS flywheel en...
01/27/2009
7460889High power classification for power over Ethernet
A method for determining the classification of a powered device, the method comprising: obtaining a first classification over a first power path; obtaining a second classification over a second power path; comparing the obtained first classification with the obtaine...
12/02/2008
7458856Active local area network connector
An active connector assembly for use in a local area network (LAN) including at least one LAN node. The active connector assembly includes an active connector housing, at least one first plurality of first electrical contacts mounted in the housing and arranged for ...
12/02/2008
7449841Charge limited high voltage switch circuits
High voltage switches are configured with a junction transistor driven with a transformer coupled AC drive signal in the common base configuration or driven by a capacitor coupled charge pump. The high voltage switches may be configured as half wave or full wave swi...
11/11/2008
7449796Power over ethernet controller suitable for multiple modes
A power over Ethernet controller supporting a plurality of powering modes, the power over Ethernet controller comprising: a pair of power sourcing equipments; and a control circuit; the control circuit being operative to control each of the pair of power sourcing eq...
11/11/2008
7441133Rack level power management for power over Ethernet
A method for rapidly powering a plurality of power over Ethernet ports constituted of: inputting an indication of available power; allocating a power budget to each of a first plurality of power over Ethernet devices; transmitting an enabling command for ports of a ...
10/21/2008
7437217Method and apparatus for supplying power in a local area network
A method for supplying power to a local area network node over communication cabling, the method comprising: injecting current-limited current into communication cabling connected to the local area network node; measuring a voltage developed in accordance with said ...
10/14/2008
7421290Power supply subsystem for powering a node over communication cabling
A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising: a management and control unit...
09/02/2008
7417443Determination of effective resistance between a power sourcing equipment and a powered device
A method of determining an effective resistance between a power sourcing equipment and a powered device, the powered device exhibiting an interface and an operational circuitry, the method comprising: prior to connecting power to the operational circuitry of the pow...
08/26/2008
7406614Electronically implemented dynamic start up method for ports with inrush current limiting functionality
A power over Ethernet controller comprising: control circuitry; at least one temperature sensor operatively connected to the control circuitry; and a plurality of electronically controlled switches responsive to the control circuit, each of the electronically contro...
07/29/2008
7400062Rack level power management
A system for rack level power management, the system comprising: at least one power source; a management module; and a plurality of power managed modules in communication with the management module and connected to draw power from the at least one power source, each...
07/15/2008
7355416Measurement of cable quality by power over ethernet
A method of determining impedance comprising: supplying power to a powered device from a power sourcing equipment at a first current limited level, Ilim1; measuring, at a plurality of times a voltage associated with the output of the power sourcing equipm...
04/08/2008
7346785Structure cabling system
This invention discloses a local area network including a hub, a plurality of nodes, communication cabling connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor operative to provide at least some operating powe...
03/18/2008
7337336Method for rapid port power reduction
A method for rapidly reducing power in the event of a change in power source conditions, comprising: obtaining an indicator of one of current power consumption of ports being supplied power and current power allocation of ports being supplied power; storing for at l...
02/26/2008
7327743Structure cabling system
This invention discloses a local area network including a hub, a plurality of nodes, communication cabling connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor operative to provide at least some operating powe...
02/05/2008
7325150Combiner for power delivery over data communication cabling infrastructure
A system for generating, delivering and distributing electrical power to network elements over a data communication network infrastructure within a building, campus or enterprise. Consolidating power distribution and data communications over a single network simplif...
01/29/2008
7305573Determining whether characteristics of a local area network node allow it to receive power over communication cabling
A power supply subsystem for providing electrical power to a local area network node over communication cabling, the power supply subsystem containing: a power management and control unit; programmable current limiting circuitry responsive to the power management an...
12/04/2007
7299368High power architecture for power over Ethernet
Power sourcing equipment providing a plurality of power sources for connection over communication cabling to a single powered device, the power sourcing equipment comprising: a first power source; a second power source; a control circuit; a current sensor adapted to...
11/20/2007
 
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