Patents by Inventor Giacomo Losio
Giacomo Losio has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150358431Abstract: Techniques are described herein for enabling mapping of virtual lanes for data streams for transmission over an optical transport network (OTN). Line encoded data blocks of a first data stream are distributed at an endpoint device in an OTN. The line encoded data blocks of the first data stream are distributed across a plurality of second data streams such that the second data streams can be processed at a lower data rate than a data rate associated with the first data stream. A transcoding operation is performed on the data packets of each of the second data streams to generate transcoded data packets. The transcoded data packets are processed such that the transcoded data packets of each of the second data streams can be sent over the OTN at the lower data rate.Type: ApplicationFiled: June 10, 2014Publication date: December 10, 2015Inventors: Gilberto Loprieno, Luca Della Chiesa, Giacomo Losio
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Patent number: 9083516Abstract: A data stream with a given data rate is distributed into a plurality of virtual lanes or streams, each with a lower data rate than the data stream. Virtual lanes permit the use of lower cost electronics at the optical-electrical conversion points. Security information is generated that includes a unique initialization vector. The security information is distributed or allocated across some or all of the of the virtual data streams in a virtual lane alignment marker in a portion of the alignment marker used to maintain direct current (DC) transmission balance, but that otherwise does not provide useful information.Type: GrantFiled: June 5, 2013Date of Patent: July 14, 2015Assignee: Cisco Technology, Inc.Inventors: Luca Della Chiesa, Gilberto Loprieno, Giacomo Losio
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Patent number: 9014554Abstract: In one embodiment, a one-way delay is measured between optical devices in an optical transport network based on roundtrip times of request and corresponding response frames. A first optical device sends a sequence of delay measurement request frames to a second optical device, which varies a local delay before responding to a request frame, thus causing a slippage in the sequence of reply frames received by the first device. The point at which the request frames are received in relation to the stream of frames sent by the optical device can be identified based on the frame slippage. Therefore, the delay measurement can be adjusted by a corresponding offset to the beginning of a frame in order to increase the accuracy of the one-way delay measurement.Type: GrantFiled: August 30, 2012Date of Patent: April 21, 2015Assignee: Cisco Technology, Inc.Inventors: Giacomo Losio, Gilberto Loprieno
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Patent number: 8942379Abstract: An Optical Transport Network (OTN) frame comprises an optical channel payload unit that is divided into a plurality of timeslots. This OTN frame is received at a transmitter and the timeslots are grouped into blocks of timeslots. Two or more blocks of timeslots are selected for encryption and are encrypted/authenticated in parallel to generate an encrypted OTN frame in which only certain blocks of timeslots are encrypted.Type: GrantFiled: October 17, 2012Date of Patent: January 27, 2015Assignee: Cisco Technology, Inc.Inventors: Gilberto Loprieno, Giacomo Losio
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Publication number: 20140362989Abstract: A data stream with a given data rate is distributed into a plurality of virtual lanes or streams, each with a lower data rate than the data stream. Virtual lanes permit the use of lower cost electronics at the optical-electrical conversion points. Security information is generated that includes a unique initialization vector. The security information is distributed or allocated across some or all of the of the virtual data streams in a virtual lane alignment marker in a portion of the alignment marker used to maintain direct current (DC) transmission balance, but that otherwise does not provide useful information.Type: ApplicationFiled: June 5, 2013Publication date: December 11, 2014Inventors: Luca Della Chiesa, Gilberto Loprieno, Giacomo Losio
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Patent number: 8909045Abstract: Using polarization modulation techniques to simultaneously transmit two different data streams (formatted according to two different protocols) over a single optical wavelength. A first data stream that is encapsulated for transport using a first transport protocol, and a second data stream that is encapsulated for transport using a second transport protocol are received. The first data stream is modulated on a wavelength with a first polarization mode of a polarization division modulation scheme to produce a first modulated data stream and the second data stream is modulated on the wavelength with a second polarization mode of the polarization division multiplex transmission scheme to produce a second modulated data stream having the second polarization mode. The second polarization mode is orthogonal to the first polarization mode. The first and second data streams are combined onto a single wavelength for transmission over a single optical fiber using a polarization beam combiner.Type: GrantFiled: December 7, 2011Date of Patent: December 9, 2014Assignee: Cisco Technology, Inc.Inventors: Giacomo Losio, Gilberto Loprieno, Theodor Kupfer
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Publication number: 20140064722Abstract: In one embodiment, a one-way delay is measured between optical devices in an optical transport network based on roundtrip times of request and corresponding response frames. A first optical device sends a sequence of delay measurement request frames to a second optical device, which varies a local delay before responding to a request frame, thus causing a slippage in the sequence of reply frames received by the first device. The point at which the request frames are received in relation to the stream of frames sent by the optical device can be identified based on the frame slippage. Therefore, the delay measurement can be adjusted by a corresponding offset to the beginning of a frame in order to increase the accuracy of the one-way delay measurement.Type: ApplicationFiled: August 30, 2012Publication date: March 6, 2014Applicant: Cisco Technology, Inc., a corporation of CaliforniaInventors: Giacomo Losio, Gilberto Loprieno
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Publication number: 20130148965Abstract: Using polarization modulation techniques to simultaneously transmit two different data streams (formatted according to two different protocols) over a single optical wavelength. A first data stream that is encapsulated for transport using a first transport protocol, and a second data stream that is encapsulated for transport using a second transport protocol are received. The first data stream is modulated on a wavelength with a first polarization mode of a polarization division modulation scheme to produce a first modulated data stream and the second data stream is modulated on the wavelength with a second polarization mode of the polarization division multiplex transmission scheme to produce a second modulated data stream having the second polarization mode. The second polarization mode is orthogonal to the first polarization mode. The first and second data streams are combined onto a single wavelength for transmission over a single optical fiber using a polarization beam combiner.Type: ApplicationFiled: December 7, 2011Publication date: June 13, 2013Applicant: CISCO TECHNOLOGY, INC.Inventors: Giacomo Losio, Gilberto Loprieno, Theodor Kupfer
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Patent number: 8452179Abstract: An apparatus-transmitting signals in a network includes a light source generating an optical signal for encoding information transmitted over a light path of the network, a modulator controlling the optical signal to generate chirped optical pulses having a first frequency spectrum such that when the pulses are transmitted from the apparatus and received at an end of the first light path the pulses have a chromatic dispersion penalty that is less than a predetermined penalty. Modulation control circuitry receives instructions from a remote controller and, in response to the instructions, controls the modulator such that the chirped optical pulses have a second frequency spectrum such that when the pulses are transmitted from the apparatus and received at an end of a second light path of the telecommunications network the pulses have a chromatic dispersion penalty that is less than a predetermined penalty.Type: GrantFiled: February 26, 2010Date of Patent: May 28, 2013Assignee: Cisco Technology, Inc.Inventors: Maurizio Gazzola, Giacomo Losio, Alessandro Sguazzotti, Andrea Castoldi
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Patent number: 8325719Abstract: An apparatus may include a plurality of queues, wherein each queue is configured to receive a respective data stream. The apparatus may also include a multiplexer configured to time division multiplex the data streams into a combined data stream and a Generic Framing Procedure-Transparent (GFP-T) frame constructor configured to create a GFP-T frame. The GFP-T frame may include a payload portion. The payload portion may include a payload data portion including a subsection of the combined data stream, and a payload header portion indicating the occurrence of a data stream signal failure. The apparatus may also include a transmitter configured to transmit the GFP-T frame via an optical link.Type: GrantFiled: June 17, 2008Date of Patent: December 4, 2012Assignee: Cisco Technology, Inc.Inventors: Gilberto Loprieno, Giacomo Losio
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Patent number: 8279891Abstract: According to another general aspect, an apparatus may include a receiver, a decoding engine, an envelope generator, an error code generator, and a transmitter. In one embodiment, the receiver may be configured to receive an Ethernet packet that includes a payload portion. In various embodiments, the decoding engine may be configured to decode at least the payload portion of the Ethernet packet such that the size of the payload portion is reduced. In some embodiments, the envelope generator may be configured to encapsulate the payload portion such that packet boundaries may be identified. In various embodiments, the error code generator may be configured to associate an error correction code with the encapsulated payload portion. In another embodiment, the transmitter may be configured to transmit the encapsulated payload and error correction code.Type: GrantFiled: December 15, 2009Date of Patent: October 2, 2012Assignee: Cisco Technology, Inc.Inventors: Gilberto Loprieno, Giacomo Losio
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Publication number: 20120158990Abstract: In one embodiment a method includes receiving a constant bit rate data stream, segmenting the constant bit rate data stream into fixed size blocks of data, generating a time stamp indicative of a system reference clock, the time stamp being in reference to a clock rate of the constant bit rate data stream, encapsulating, in an electronic communication protocol frame, a predetermined number of fixed blocks of data along with (i) a control word indicative of, at least, a relative sequence of the predetermined number of fixed blocks of data in the constant bit rate stream and (ii) the time stamp, and transmitting the electronic communication protocol frame to a packet switched network.Type: ApplicationFiled: December 17, 2010Publication date: June 21, 2012Applicant: CISCO TECHNOLOGY, INC.Inventors: Giacomo Losio, Federico Scandroglio, Gilberto Loprieno, Luca Della Chiesa, Giovanni Giobbio
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Patent number: 8149871Abstract: In one embodiment, a SONET/SDH over Ethernet demapping point utilizes a pointer offset mechanism for clock recovery and timing. The pointer offset is determined by the difference between a client clock and a reference clock.Type: GrantFiled: February 13, 2009Date of Patent: April 3, 2012Assignee: Cisco Technology, Inc.Inventors: Gilberto Loprieno, David Bianchi, Giacomo Losio
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Patent number: 8075199Abstract: Various example embodiments are disclosed. According to an example embodiment, a form factor adapter module may include a small form factor (SFF) host connector configured to receive a small form factor pluggable (SFP or SFP+) module and to transmit and receive data according to a Serializer-deserializer Framer Interface (SFI) protocol. The form factor adapter module may also include a 10 Gigabit Ethernet Small Form-Factor Pluggable (XFP) edge finger connector configured to transmit and receive data to and from the SFF host connector according to the SFI protocol and to mate with an XFP edge finger socket.Type: GrantFiled: September 10, 2009Date of Patent: December 13, 2011Assignee: Cisco Technology, Inc.Inventors: Giacomo Losio, Giovanni Giobbio, Maurizio Gazzola
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Publication number: 20110211840Abstract: An apparatus for transmitting signals in a telecommunications network includes a light source that generates an optical signal for encoding information transmitted from the apparatus over a light path of the telecommunications network, a modulator configured for controlling the optical signal to generate chirped optical pulses of the optical signal, the chirped optical pulses having a first frequency spectrum controlled by the modulator, such that when the pulses are transmitted from the apparatus and received at an end of the first light path the pulses have a chromatic dispersion penalty that is less than a predetermined penalty.Type: ApplicationFiled: February 26, 2010Publication date: September 1, 2011Applicant: Cisco Technology, Inc.Inventors: Maurizio Gazzola, Giacomo Losio, Alessandro Squazzotti, Andrea Castoldi
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Publication number: 20110142069Abstract: According to another general aspect, an apparatus may include a receiver, a decoding engine, an envelope generator, an error code generator, and a transmitter. In one embodiment, the receiver may be configured to receive an Ethernet packet that includes a payload portion. In various embodiments, the decoding engine may be configured to decode at least the payload portion of the Ethernet packet such that the size of the payload portion is reduced. In some embodiments, the envelope generator may be configured to encapsulate the payload portion such that packet boundaries may be identified. In various embodiments, the error code generator may be configured to associate an error correction code with the encapsulated payload portion. In another embodiment, the transmitter may be configured to transmit the encapsulated payload and error correction code.Type: ApplicationFiled: December 15, 2009Publication date: June 16, 2011Applicant: Cisco Technology, IncInventors: Gilberto Loprieno, Giacomo Losio
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Publication number: 20110058777Abstract: Various example embodiments are disclosed. According to an example embodiment, a form factor adapter module may include a small form factor (SFF) host connector configured to receive a small form factor pluggable (SFP or SFP+) module and to transmit and receive data according to a Serializer-deserializer Framer Interface (SFI) protocol. The form factor adapter module may also include a 10 Gigabit Ethernet Small Form-Factor Pluggable (XFP) edge finger connector configured to transmit and receive data to and from the SFF host connector according to the SFI protocol and to mate with an XFP edge finger socket.Type: ApplicationFiled: September 10, 2009Publication date: March 10, 2011Applicant: Cisco Technology, Inc.Inventors: Maurizio Gazzola, Giovanni Giobbio, Giacomo Losio
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Publication number: 20100209111Abstract: In one embodiment, a SONET/SDH over Ethernet demapping point utilizes a pointer offset mechanism for clock recovery and timing. The pointer offset is determined by the difference between a client clock and a reference clock.Type: ApplicationFiled: February 13, 2009Publication date: August 19, 2010Inventors: Gilberto Loprieno, David Bianchi, Giacomo Losio
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Patent number: 7529489Abstract: A transponder unit which relays signals between a plurality of channels of an optical transport network and a plurality of clients. The interconnections within the transponder unit are reconfigurable for selective connections. A connection between a first client and a first network channel and a connection between a second client and a second network channel is independent of each other and may be selected so that the second client is connected to the first network channel and the first client is connected to the second network channel. Other selected connections are also possible.Type: GrantFiled: September 21, 2005Date of Patent: May 5, 2009Assignee: Cisco Technology, Inc.Inventors: Luca Della Chiesa, Giuseppe Pietro Ravasio, Mauro Rudi Casanova, Giacomo Losio
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Publication number: 20070076768Abstract: A transponder unit which relays signals between a plurality of channels of an optical transport network and a plurality of clients. The interconnections within the transponder unit are reconfigurable for selective connections. A connection between a first client and a first network channel and a connection between a second client and a second network channel is independent of each other and may be selected so that the second client is connected to the first network channel and the first client is connected to the second network channel. Other selected connections are also possible.Type: ApplicationFiled: September 20, 2005Publication date: April 5, 2007Inventors: Luca Chiesa, Giuseppe Ravasio, Mauro Casanova, Giacomo Losio