Patents by Inventor Keith Conroy
Keith Conroy 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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Patent number: 8244143Abstract: A system and method are provided for calibrating orthogonal polarity in a multichannel optical transport network (OTN) receiver. The method accepts a composite signal and separates the polarization of the signal into a pair of 2n-phase shift keying (2n-PSK) modulated input signals via Ix and Qx optical signal paths, where n?1. Likewise, a pair of 2p-PSK modulated input signals are accepted via Iy and Qy optical signal paths where p?1. Polarization-adjusted I?x, Q?x, I?y, and Q?y signals are generated. An average magnitude is compared to either 2× the absolute magnitude of (I?x and Q?x), or 2× the absolute magnitude of (I?y and Q?y). The average magnitude value can be used that is either 2× (a predetermined peak signal amplitude), or the sum of the absolute magnitudes of (I?x and Q?x) and (I?y and Q?y). The polarization-adjusted I?x, Q?x, I?y, and Q?y signals are modified until the magnitude comparison is about zero.Type: GrantFiled: September 2, 2009Date of Patent: August 14, 2012Assignee: Applied Micro Circuits CorporationInventors: Keith Conroy, Omer Acikel
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Patent number: 8160057Abstract: Systems and methods are provided for multi-channel ITU G.709 optical transport network (OTN) communications. The transmission method accepts an ITU G.709 OTN frame including an OTU overhead (OH) section and an ODU section. A forward error correction (FEC) parity section with a training signal is appended to the ITU G.709 OTN frame, to create a training-enhanced (TE) OTN frame. All, or a portion of the TE OTN may be buffered in a tangible memory medium in preparation for striping. The training-enhanced OTN frame is then striped into n parallel streams, and n TE_OTN-PFs (Parallel Frames) are supplied.Type: GrantFiled: June 30, 2008Date of Patent: April 17, 2012Assignee: Applied Micro Circuits CorporationInventors: Francesco Caggioni, Omer Acikel, Keith Conroy
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Patent number: 8135281Abstract: A Free Space Optics (FSO) connector is provided with a method for interfacing to an electronic circuit card electrical connector via the FSO connector. The method transceives electrical signals via an electronic circuit card electrical connector. Using an FSO connector, the method converts between electrical signals and optical signals, and transceives optical signals via free space. In one aspect, the optical signals are initially received via free space along a first axis, and reflected along a second axis. Further, the optical signals may be initially transmitted along the second axis and reflected into free space along the first axis. In another aspect, the optical signals are transceived in a plurality of directions in free space. For example, optical signals may be transmitted and received in four mutually-orthogonal axes.Type: GrantFiled: April 11, 2009Date of Patent: March 13, 2012Assignee: Applied Micro Circuits CorporationInventors: Igor Zhovnirovsky, Subhash Roy, Keith Conroy
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Patent number: 8125979Abstract: Systems and methods are provided for multi-channel ITU G.709 optical transport network (OTN) transmission and receiving. The transmission method accepts a canonical ITU G.709 OTN frame including an OTU overhead (OH) section, an ODU section, and a forward error correction (FEC) parity section. A training signal wrapper is added to the ITU G.709 OTN frame, and at least a portion of a training-enhanced (TE) OTN frame is buffered in a tangible memory medium in preparation for striping. The method stripes the training-enhanced OTN frame into n parallel streams to supply n TE_OTN-PFs (Parallel Frames) at an output.Type: GrantFiled: July 8, 2008Date of Patent: February 28, 2012Assignee: Applied Micro Circuits CorporationInventors: Francesco Caggioni, Omer Acikel, Keith Conroy
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Patent number: 8109677Abstract: Fiber optic cable jacks and plugs are provided. In one aspect, a cable is made from at least one length of fiber optic line having a first end and a second end. A first plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line first end, and a microlens to transceive light with the cable interface. The first plug is shaped to engage a first jack housing. A second plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line second end, and a microlens to transceive light with the cable interface. The second plug is shaped to engage a second jack housing. The mechanical bodies have inner walls that form an air gap cavity interposed between the microlens convex surface and an engaging jack optical interface.Type: GrantFiled: June 1, 2011Date of Patent: February 7, 2012Assignee: Applied Micro Circuits CorporationInventors: Igor Zhovnirovsky, Subhash Roy, Keith Conroy
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Publication number: 20110229084Abstract: Fiber optic cable jacks and plugs are provided. In one aspect, a cable is made from at least one length of fiber optic line having a first end and a second end. A first plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line first end, and a microlens to transceive light with the cable interface. The first plug is shaped to engage a first jack housing. A second plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line second end, and a microlens to transceive light with the cable interface. The second plug is shaped to engage a second jack housing. The mechanical bodies have inner walls that form an air gap cavity interposed between the microlens convex surface and an engaging jack optical interface.Type: ApplicationFiled: June 1, 2011Publication date: September 22, 2011Inventors: Igor Zhovnirovsky, Subhash Roy, Keith Conroy
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Patent number: 7970285Abstract: A system and method are provided for calibrating temporal skew in a multichannel optical transport network (OTN) transmission device. The method accepts a pair of 2n-phase shift keying (2n-PSK) modulated signals, as well as a pair of 2p-PSK modulated signals. The 2n-PSK and 2p-PSK signals are converted to 2n-PSK and 2p-PSK optical signals, respectively. The 2n-PSK and 2p-PSK optical signals are orthogonally polarized and transmitted. A timing voltage is generated that is responsive to the intensity of the orthogonally polarized signals. The timing voltage is correlated to a reference frame calibration pattern associated with a preamble/header portion of an OTN frame. Then, the timing voltages associated with the Ix, Qx, Iy, and Qy signal paths are compared, and the misalignment between the timing voltages and the reference frame calibration pattern is minimized in response to adjusting time delay modules in the Ix, Qx, Iy, and Qy signal paths.Type: GrantFiled: September 30, 2008Date of Patent: June 28, 2011Assignee: Applied Micro Circuits CorporationInventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Patent number: 7965941Abstract: A system and method are provided for controlling time delay in a multichannel optical transport network (OTN) transmission device using time domain reflectometry (TDR) measurements. The method accepts a pair of 2n-phase shift keying (2n-PSK) modulated signals via Ix and Qx electrical signal paths, where n>1. Likewise, a pair of 2p-PSK modulated signals are accepted via Iy and Qy electrical signal paths where p>1. Using TDR modules, signal reflections are measured from an output port for each signal path. The method minimizes time delay differences in the signal reflections for the Ix, Qx, Iy, and Qy signals paths by using the signal reflection measurements to adjust time delay modules in each signal path.Type: GrantFiled: September 5, 2008Date of Patent: June 21, 2011Assignee: Applied Micro Circuits CorporationInventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Patent number: 7965946Abstract: A system and method are provided for calibrating skew in a multichannel optical transport network (OTN) transmission device. The method accepts a pair of 2n-phase shift keying (2nPSK) modulated signals via Ix and Qx electrical signal paths, where n>1. Likewise, a pair of 2p-PSK modulated signals are accepted via Iy and Qy electrical signal paths where p>1. The Ix, Qx, Iy, and Qy signals are correlated to a preamble/header portion of an OTN frame. A voltage on the Ix signal path is compared with Qx, and VO12 voltage is generated. A voltage on the Iy signal path is compared with Qy, and VO34 is generated. One of the Ix or Qx voltages is compared with one of Iy or Qy voltages to generate VOxy. Then, the VO voltages are minimized in response to adjusting time delay modules in the Ix, Qx, Iy, and Qy signals paths.Type: GrantFiled: July 8, 2008Date of Patent: June 21, 2011Assignee: Applied Micro Circuits CorporationInventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Patent number: 7962043Abstract: A system and method are provided for controlling time delay in a multichannel optical transport network transmission device. The method accepts a pair of 2n-phase shift keying (2nPSK) modulated signals via Ix and Qx electrical signal paths, where n>1, and a pair of 2p-PSK modulated signals via Iy and Qy electrical signal paths where p>1. A voltage V1 on the Ix signal path is compared with a voltage V2 on the Qx signal path, and a VOx voltage in generated, which is minimized by adjusting time delay modules in the Ix and Qx signals paths. Likewise, a voltage V3 (Iy) is compared with a voltage V4 (Qy), and a VOy voltage is generated and minimized. Subsequent to minimizing VOx and VOy, the sum of V1 and V2 (V12) is compared with the sum of V3 and V4 (V34), and a VOxy voltage is generated and minimized.Type: GrantFiled: June 20, 2008Date of Patent: June 14, 2011Assignee: Applied Micro Circuits CorporationInventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Publication number: 20100316337Abstract: Fiber optic cable jacks and plugs are provided. In one aspect, a cable is made from at least one length of fiber optic line having a first end and a second end. A first plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line first end, and a microlens to transceive light with the cable interface. The first plug is shaped to engage a first jack housing. A second plug includes a one-piece mechanical body with a cable interface to engage the fiber optic line second end, and a microlens to transceive light with the cable interface. The second plug is shaped to engage a second jack housing. The mechanical bodies have inner walls that form an air gap cavity interposed between the microlens convex surface and an engaging jack optical interface.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Inventors: Igor Zhovnirovsky, Subhash Roy, Keith Conroy
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Publication number: 20100316068Abstract: A system and method are provided for transporting digital information via a modified Attachment Unit Interface (MAUI) or XAUI-like interface. At a transmitter, a synchronous serial stream of digital information is accepted. The serial stream is divided into a sequence of segments. The segments are encapsulated, creating a sequence of packets by adding a start character to the beginning of each segment, and adding a terminate character to the end of each segment. Typically, each segment is disinterleaved across m equal-rate lanes, whose combination is effectively equal to the incoming serial stream data rate, with compensation for added encapsulation characters. The added encapsulation characters may include post-start characters added subsequent to the start character, inter-packet characters added subsequent to the termination character, or a combination of post-start and inter-packet characters.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Inventors: Matthew Ornes, Keith Conroy
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Publication number: 20100260503Abstract: A Free Space Optics (FSO) connector is provided with a method for interfacing to an electronic circuit card electrical connector via the FSO connector. The method transceives electrical signals via an electronic circuit card electrical connector. Using an FSO connector, the method converts between electrical signals and optical signals, and transceives optical signals via free space. In one aspect, the optical signals are initially received via free space along a first axis, and reflected along a second axis. Further, the optical signals may be initially transmitted along the second axis and reflected into free space along the first axis. In another aspect, the optical signals are transceived in a plurality of directions in free space. For example, optical signals may be transmitted and received in four mutually-orthogonal axes.Type: ApplicationFiled: April 11, 2009Publication date: October 14, 2010Inventors: Igor Zhovnirovsky, Subhash Roy, Keith Conroy
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Publication number: 20100135655Abstract: A system and method are provided for calibrating orthogonal polarity in a multichannel optical transport network (OTN) receiver. The method accepts a composite signal and separates the polarization of the signal into a pair of 2n-phase shift keying (2n-PSK) modulated input signals via Ix and Qx optical signal paths, where n?1. Likewise, a pair of 2p-PSK modulated input signals are accepted via Iy and Qy optical signal paths where p?1. Polarization-adjusted I?x, Q?x, I?y, and Q?y signals are generated. An average magnitude is compared to either 2×the absolute magnitude of (I?x and Q?x), or 2×the absolute magnitude of (I?y and Q?y). The average magnitude value can be used that is either 2×(a predetermined peak signal amplitude), or the sum of the absolute magnitudes of (I?x and Q?x) and (I?y and Q?y). The polarization-adjusted I?x, Q?x, I?y, and Q?y signals are modified until the magnitude comparison is about zero.Type: ApplicationFiled: September 2, 2009Publication date: June 3, 2010Inventors: Keith Conroy, Omer Acikel
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Publication number: 20100080570Abstract: A system and method are provided for calibrating temporal skew in a multichannel optical transport network (OTN) transmission device. The method accepts a pair of 2n-phase shift keying (2n-PSK) modulated signals, as well as a pair of 2p-PSK modulated signals. The 2n-PSK and 2p-PSK signals are converted to 2n-PSK and 2p-PSK optical signals, respectively. The 2n-PSK and 2p-PSK optical signals are orthogonally polarized and transmitted. A timing voltage is generated that is responsive to the intensity of the orthogonally polarized signals. The timing voltage is correlated to a reference frame calibration pattern associated with a preamble/header portion of an OTN frame. Then, the timing voltages associated with the Ix, Qx, Iy, and Qy signal paths are compared, and the misalignment between the timing voltages and the reference frame calibration pattern is minimized in response to adjusting time delay modules in the Ix, Qx, Iy, and Qy signal paths.Type: ApplicationFiled: September 30, 2008Publication date: April 1, 2010Inventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Publication number: 20100061731Abstract: A system and method are provided for controlling time delay in a multichannel optical transport network (OTN) transmission device using time domain reflectometry (TDR) measurements. The method accepts a pair of 2n-phase shift keying (2n-PSK) modulated signals via Ix and Qx electrical signal paths, where n>1. Likewise, a pair of 2p-PSK modulated signals are accepted via Iy and Qy electrical signal paths where p>1. Using TDR modules, signal reflections are measured from an output port for each signal path. The method minimizes time delay differences in the signal reflections for the Ix, Qx, Iy, and Qy signals paths by using the signal reflection measurements to adjust time delay modules in each signal path.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Inventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Publication number: 20100008678Abstract: Systems and methods are provided for multi-channel ITU G.709 optical transport network (OTN) transmission and receiving. The transmission method accepts a canonical ITU G.709 OTN frame including an OTU overhead (OH) section, an ODU section, and a forward error correction (FEC) parity section. A training signal wrapper is added to the ITU G.709 OTN frame, and at least a portion of a training-enhanced (TE) OTN frame is buffered in a tangible memory medium in preparation for striping. The method stripes the training-enhanced OTN frame into n parallel streams to supply n TE_OTN-PFs (Parallel Frames) at an output.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Inventors: Francesco Caggioni, Omer Acikel, Keith Conroy
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Publication number: 20100008677Abstract: A system and method are provided for calibrating skew in a multichannel optical transport network (OTN) transmission device. The method accepts a pair of 2n-phase shift keying (2nPSK) modulated signals via Ix and Qx electrical signal paths, where n>1. Likewise, a pair of 2P-PSK modulated signals are accepted via Iy and Qy electrical signal paths where p>1. The Ix, Qx, Iy, and Qy signals are correlated to a preamble/header portion of an OTN frame. A voltage on the Ix signal path is compared with Qx, and VO12 voltage is generated. A voltage on the Iy signal path is compared with Qy, and VO34 is generated. One of the Ix or Qx voltages is compared with one of Iy or Qy voltages to generate VOxy. Then, the VO voltages are minimized in response to adjusting time delay modules in the Ix, Qx, Iy, and Qy signals paths.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Inventors: Keith Conroy, Omer Acikel, Francesco Caggioni
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Publication number: 20090324227Abstract: Systems and methods are provided for multi-channel ITU G.709 optical transport network (OTN) communications The transmission method accepts an ITU G.709 OTN frame including an OTU overhead (OH) section and an ODU section. A forward error correction (FEC) parity section with a training signal is appended to the ITU G.709 OTN frame, to create a training-enhanced (TE) OTN frame. All, or a portion of the TE OTN may be buffered in a tangible memory medium in preparation for striping. The training-enhanced OTN frame is then striped into n parallel streams, and n TE_OTN-PFs (Parallel Frames) are supplied.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Inventors: Francesco Caggioni, Omer Acikel, Keith Conroy
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Publication number: 20090317090Abstract: A system and method are provided for controlling time delay in a multichannel optical transport network transmission device. The method accepts a pair of 2n-phase shift keying (2nPSK) modulated signals via Ix and Qx electrical signal paths, where n>1, and a pair of 2p-PSK modulated signals via Iy and Qy electrical signal paths where p>1. A voltage V1 on the Ix signal path is compared with a voltage V2 on the Qx signal path, and a VOx voltage in generated, which is minimized by adjusting time delay modules in the Ix and Qx signals paths. Likewise, a voltage V3 (Iy) is compared with a voltage V4 (Qy), and a VOy voltage is generated and minimized. Subsequent to minimizing VOx and VOy, the sum of V1 and V2 (V12) is compared with the sum of V3 and V4 (V34), and a VOxy voltage is generated and minimized.Type: ApplicationFiled: June 20, 2008Publication date: December 24, 2009Inventors: Keith Conroy, Omer Acikel, Francesco Caggioni