| Patent application number | Description | Published |
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| 20090109862 | Method for Reducing Fault Detection Time in a Telecommunication Network - A method for reducing fault detection time in a network includes routers configured to exchange messages via at least one switch to check mutual reachability, each message including a list of routers reachable from the sending router. The method includes snooping, by the switch, a message from a router to extract the list of routers reachable from the router; and, when a network fault occurs that prevents the router from being reachable via the switch, sending, by the switch and to all the other routers connected to the switch, a network fault message including an empty list of routers, so that the receiving routers, not seeing their own identifier in the list, declare the adjacency with the sending router closed, and proceed to reroute traffic on a new route. | 04-30-2009 |
| 20110085546 | METHOD AND DEVICES FOR MULTICAST DISTRIBUTION OPTIMIZATION - Multicast information flows are distributed from a source to user terminals over a network including aggregation routers arranged in hierarchical levels. Once a request for a given information flow is received from a user terminal, a distribution path can be defined through a plurality of aggregation routers. At one or more of the aggregation routers traversed by the information flow an information subflow can be derived to be propagated also towards lower-level aggregation routers that are not traversed by the information flow being distributed. Further requests for the same information flow received through an aggregation router towards which the information subflow was propagated are forwarded towards an aggregation router where the subflow was derived. | 04-14-2011 |
| Patent application number | Description | Published |
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| 20090236505 | MULTIFUNCTIONAL OPTICAL SENSOR COMPRISING A PHOTODETECTORS MATRIX COUPLED TO A MICROLENSES MATRIX - Multifunctional optical sensor, comprising a matrix of photodetectors of the CCD or CMOS type, having a sensitive area divided into sub-areas, each of which, individually or combined with others, is dedicated to a specific function of monitoring the scene or measuring environmental parameters. The optical sensor comprises a matrix of microlenses, each of which is set to focus the radiation coming from a portion of solid angle on the associated photodetector or cluster of mutually contiguous photodetectors. Each function is associated to a single microlens or to a single subgroup of mutually contiguous microlenses or to multiple, not mutually contiguous microlenses or to multiple, not mutually contiguous subgroups of microlenses. The angular separation between the central directions of the portions of solid angle subtended by adjacent photodetectors or adjacent clusters of photodetectors is not constant within the matrix. | 09-24-2009 |
| 20100141765 | OPTICAL DEVICE FOR MOTOR VEHICLES, FOR DETECTING THE CONDITION OF THE ROAD SURFACE - An optical device for motor vehicles, designed to detect the condition of the road surface, comprises a unit for the emission of electromagnetic radiation in the direction of the road surface to be detected, a receiving unit coupled to an optical element for focusing the radiation back-diffused by the road surface and an electronic control and processing unit for receiving signals at output from said receiving unit and for processing them in order to determine the condition of the road surface, on the basis of a reference map. Appearing in said map are the values of the intensity of radiation I | 06-10-2010 |
| 20110149076 | OPTICAL DETECTION SYSTEM FOR MOTOR-VEHICLES HAVING MULTIPLE FUNCTIONS, INCLUDING DETECTION OF THE CONDITION OF THE ROAD SURFACE - An optical detection system per motor-vehicles, suitable to detect the condition of the road surface on which the vehicle is travelling, comprising a photodetector unit composed of a camera having a matrix of pixels composed of photodetectors based on a photosensitive material suitable to detect both radiations in the visible and near infrared, i.e. having a wavelength comprised between 380 and 900 nanometres, and radiations in the short wavelength infrared, i.e. having a wavelength comprised between 900 and 1700 nanometres. | 06-23-2011 |
