Echelon Patent Grants

Automated topology discovery and management for electric meters

Granted: September 5, 2017
Patent Number: 9755906
A method for automated topology discovery and management of meter nodes in a power grid is described. In the discovery mode any of the meter nodes is able to act as a proxy for a data concentrator to sort out the topology, and to determine the best path for communicating between a concentrator and each of the meter nodes.

Method and system of enhancing signal processing in a shared medium network

Granted: June 13, 2017
Patent Number: 9681461
A method implemented in a device is disclosed for networking through signals transmitted across a shared medium network. The method starts with monitoring for a first signal on a shared medium of the shared medium network. The first signal is processed after it is received and while the first signal is being processed, a set of one or more signals is received on the shared medium. Then a set of one or more amplitude increases is determined, where each amplitude increase is from an…

Method and system of improved galois multiplication

Granted: June 6, 2017
Patent Number: 9672009
Embodiments of the invention include an apparatus for performing Galois multiplication using an enhanced Galois table. Galois multiplication may include converting a first and second multiplicand to exponential forms using a Galois table, adding the exponential forms of the first and second multiplicands, and converting the added exponential forms of the first and second multiplicands to a decimal equivalent binary form using the Galois table to decimal equivalent binary result of the…

Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences

Granted: April 4, 2017
Patent Number: 9614706
A method is disclosed for detecting packet at a receiving system in a Multi-Carrier Modulation (MCM) system. The method starts with receiving a signal at the receiving system. Then a deviation value of the signal is computed, where the deviation value is computed at least partially based on phase differences between some number of carriers in the preamble. The deviation value is compared with a threshold to determine whether a packet has been detected from the received signal. In…

Apparatuses and methods to detect and provision for lighting interfaces

Granted: January 3, 2017
Patent Number: 9538614
Methods and apparatuses relate to detection and provisioning for lighting interfaces. In one embodiment, a hardware apparatus includes a sensing module to detect a lighting interface from a plurality of lighting interfaces to power a light emitting element, and a dimming module to supply multiple power levels of the lighting interface to the light emitting element. In another embodiment, a hardware apparatus further includes a communication module to provide a signal from a network to…

Systems, methods, and apparatuses using common addressing

Granted: December 13, 2016
Patent Number: 9521219
Described herein are systems, methods, and apparatuses for device communication over IP. In some embodiments, IPv6 addresses are compressed into ISO/IEC 14908-1 addresses, and use leading zero suppression to compress the headers. In some embodiments, IPv4 the least significant two bytes of the IPv4 address are used as an ISO/IEC 14908-1 subnet and node number.

Multi-protocol serial nonvolatile memory interface

Granted: August 9, 2016
Patent Number: 9411772
An electronic device including a multi-protocol serial nonvolatile memory interface is disclosed. The interface includes: a first line operative to perform functions of a first chip select line when the interface operates as a SPI of the electronic device; a second line operative to perform functions of a second chip select line when the interface operates as the SPI of the electronic device; a third line operative to perform functions of a clock line when the interface operates as…

Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences

Granted: August 9, 2016
Patent Number: 9413575
A method is disclosed for detecting packet at a receiving system in a Multi-Carrier Modulation (MCM) system. The method starts with receiving a signal at the receiving system. Then a deviation value of the signal is computed, where the deviation value is computed at least partially based on phase differences between some number of carriers in the preamble. The deviation value is compared with a threshold to determine whether a packet has been detected from the received signal. In…

Method and apparatus for phase-based multi-carrier modulation (MCM) packet detection

Granted: June 7, 2016
Patent Number: 9363128
A method is disclosed for detecting packet at a receiving system in a Multi-Carrier Modulation (MCM) system. The method starts with receiving a signal at the receiving system. Then during the plurality of symbol durations, a set of phases of the signal for each symbol duration is obtained, where each phase is a phase of a carrier of the number of carriers. Then a set of phase variances for each carrier of the number of carriers is obtained, where each phase variance is a difference of…

Method and system of enhancing signal processing in a shared medium network

Granted: May 31, 2016
Patent Number: 9356854
A method implemented in a device is disclosed for networking through signals transmitted across a shared medium network. The method starts with monitoring for a first signal on a shared medium of the shared medium network. The first signal is processed after it is received and while the first signal is being processed, a set of one or more signals is received on the shared medium. Then a set of one or more amplitude increases is determined, where each amplitude increase is from an…

Method and system of improved reed-solomon decoding

Granted: February 2, 2016
Patent Number: 9250862
Embodiments of an improved Galois multiplication route are described. In some embodiments, the Galois multiplication routine looks up and retrieves a first value corresponding to an address in the Galois table, exclusive ORs the retrieved value with a data value from a data set to generate an intermediate address for the Galois table, wherein the data value is at a location associated with an index, and looks up and retrieves a second value in the Galois table by the intermediate…

Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences

Granted: January 26, 2016
Patent Number: 9246726
A method is disclosed for detecting packet at a receiving system in a Multi-Carrier Modulation (MCM) system. The method starts with receiving a signal at the receiving system. Then a deviation value of the signal is computed, where the deviation value is computed at least partially based on phase differences between some number of carriers in the preamble. The deviation value is compared with a threshold to determine whether a packet has been detected from the received signal. In…

Method and apparatus for phase-based multi-carrier modulation (MCM) packet detection

Granted: January 26, 2016
Patent Number: 9246733
A method is disclosed for detecting packet at a receiving system in a Multi-Carrier Modulation (MCM) system. The method starts with receiving a signal at the receiving system. Then during the plurality of symbol durations, a set of phases of the signal for each symbol duration is obtained, where each phase is a phase of a carrier of the number of carriers. Then a set of phase variances for each carrier of the number of carriers is obtained, where each phase variance is a difference of…

Method and system of enhancing signal processing in a shared medium network

Granted: January 26, 2016
Patent Number: 9246787
A method implemented in a device is disclosed for networking through signals transmitted across a shared medium network. The method starts with monitoring for a first signal on a shared medium of the shared medium network. The first signal is processed after it is received and while the first signal is being processed, a set of one or more signals is received on the shared medium. Then a set of one or more amplitude increases is determined, where each amplitude increase is from an…

Method and system of improved Galois multiplication

Granted: January 12, 2016
Patent Number: 9235554
Embodiments of the invention include an apparatus for performing Galois multiplication using an enhanced Galois table. Galois multiplication may include converting a first and second multiplicand to exponential forms using a Galois table, adding the exponential forms of the first and second multiplicands, and converting the added exponential forms of the first and second multiplicands to a decimal equivalent binary form using the Galois table to decimal equivalent binary result of the…

Power line communication device that is resilient to cross-band interference

Granted: April 14, 2015
Patent Number: 9008193
A Power Line Communication (PLC) device that is resilient to cross-band interference. The PLC device is configured to communicate on AC power wiring in the frequency range of 9 kilohertz to 500 kilohertz and does not use automatic gain control prior to analog-to-digital conversion. The PLC device includes an over-sampled analog-to-digital converter with a sample clock of at least 10 megahertz and includes a loop filter that maintains a noise power spectral density that does not exceed…

Three-way and four-way switching circuit

Granted: February 10, 2015
Patent Number: 8952575
A three-way or four-way switching circuit for lighting, and the like, is described. One three-way switch is replaced with an electronic switch. Both legs of the switching circuit are powered all the time and current is sensed in the legs to determine when one of the three-way or four-way switches has been switched. This information is used to turn the light on and off.

Cotter spring pin

Granted: August 19, 2014
Patent Number: 8807903
A retainer pin is described for retaining, in one embodiment, a relatively thin blade against a transverse surface. The pin has a transition section which extends through an opening in the blade, a keeper section extending along one side of the blade, and a snap arm and snap end extending along an opposite side of the blade with a snap snapping over the edge of the blade.

Sampling of non-planar display surfaces

Granted: July 1, 2014
Patent Number: 8766998
Sampling in the process of trans-raster distortion correction is described. The distortion parameterization is analyzed to determine the maximum inflation and deflation (magnification and minification) over the image. The maximum inflation is then used to determine the optimal resolution (dimensions in pixels) of the linear-projected image such that it is not undersampled by the output image. The maximum deflation, coupled with the optimal resolution determined in the inflation step, is…

Local search optimization using personal footprints

Granted: April 22, 2014
Patent Number: 8706719
A user's physical location and the time the user is at that location are sampled by an network-enabled mobile computing device at certain intervals, and used to construct a representation of the comparative relevance of the different physical locations where the user lives. This representation is then used then to optimize and prioritize results returned by a local network search operation, informing the user about which search result would be optimal for the user at her intended time…