Keith G Conroy, 4525 Lakeshore Dr UNIT I4, North Attleboro, MA 02760

6915464, Jul 5, 2005

Feb 15, 2002

10/077332

Daniel M. Castagnozzi - Lexington MA, US
Warm Shaw Yuan - San Diego CA, US
Keith Michael Conroy - Perkasie PA, US
Omer Fatih Acikel - San Diego CA, US

Applied Micro Circuits Corporation - San Diego CA

H03M013/00

714709, 714775, 714780

A system and a method are provided for non-causal channel equalization using error statistics. The method comprises: receiving a non-return to zero (NRZ) data stream input encoded with forward error correction (FEC); establishing a plurality of thresholds to generate a first bit estimate; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; in response to the comparisons, determining the value of the first bit; FEC decoding the determined first bit value; and, using FEC error statistics to adjust the thresholds by evaluating the number of errors associated with a plurality of three-bit sequence combinations.

7024599, Apr 4, 2006

Dec 7, 2001

10/020426

Daniel M. Castagnozzi - Lexington MA, US
Alan Michael Sorgi - San Diego CA, US
Warm Shaw Yuan - San Diego CA, US
Keith Michael Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

H03M 13/00

714709, 714754, 714776

A system and method are provided for non-causal channel equalization in a communications system. The method comprises: receiving a non-return to zero (NRZ) data stream input; establishing thresholds to distinguish a first bit estimate; comparing the first bit estimate in the NRZ data stream to a second bit value received prior to the first bit, and a third bit received subsequent to the first bit; in response to the comparisons, determining the value of the first bit; tracking the NRZ data stream inputs in response to sequential bit value combinations; maintaining long-term averages of the tracked NRZ data stream inputs; adjusting the thresholds in response to the long-term averages; and, offsetting the threshold adjustments to account for the asymmetric noise distribution. Two methods are used to offset the threshold adjustments to account for the asymmetric noise distribution: forward error correction (FEC) decoding and tracking the ratio of bit values.

7065685, Jun 20, 2006

Apr 29, 2005

11/116612

Daniel M. Castagnozzi - Lexington MA, US
Alan Michael Sorgi - San Diego CA, US
Warm Shaw Yuan - San Diego CA, US
Keith Michael Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

H03M 13/00

714709

A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing a first threshold (V) to distinguish a high probability “1” first bit estimate; establishing a second threshold (V) to distinguish a high probability “0” first bit estimate; establishing a third threshold (Vopt) to distinguish first bit estimates between the first and second thresholds; receiving a non-return to zero (NRZ) data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; in response to the comparisons, determining the value of the first bit.

7206342, Apr 17, 2007

Aug 29, 2003

10/652333

Daniel M. Castagnozzi - Lexington MA, US
Keith Michael Conroy - Salem NH, US
Warm Shaw Yuan - San Diego CA, US
Omer Fatih Acikel - San Diego CA, US

Applied Micro Circuits Corp. - San Diego CA

H04L 27/08

375233, 375345

A modified gain system and method are provided for non-causal channel equalization using feed-forward and feedback compensation. The method comprises: receiving a serial data stream first bit (present) input; comparing a second bit (past) value, received prior to the first bit input, to a third bit (future) value received subsequent to the first bit input; modifying the amplitude of the first bit input to compensate for the effect of the second and third bit values being equal; and, determining the value of the first bit input by comparing the amplitude modified first bit input to a Vopt threshold. When only one of the second and third bit values is a “1” value, a unity amplitude modifier is supplied. When the second and third bit values are a “1”, a low amplitude modifier is supplied. When the second and third bit values are a “0”, a high amplitude modifier is supplied.

8109677, Feb 7, 2012

Jun 1, 2011

13/150496

Igor Zhovnirovsky - Newton MA, US
Subhash Roy - Lexington MA, US
Keith Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

G02B 6/38
G02B 6/12
G02B 6/26
G02B 6/32
G02B 6/36
G02B 6/44
G02B 6/00

385 74, 385 14, 385 31, 385 32, 385 33, 385 34, 385 70, 385 73, 385 76, 385 88, 385 92, 385 93, 385 94, 385100, 385139

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.

8125979, Feb 28, 2012

Jul 8, 2008

12/169518

Francesco Caggioni - Winchester MA, US
Omer Acikel - San Diego CA, US
Keith Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

H04L 12/28

370351

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.

8135281, Mar 13, 2012

Apr 11, 2009

12/422265

Igor Zhovnirovsky - Newton MA, US
Subhash Roy - Lexington MA, US
Keith Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

H04B 10/00

398128, 398118, 398 96

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.

8160057, Apr 17, 2012

Jun 30, 2008

12/164440

Francesco Caggioni - Winchester MA, US
Omer Acikel - San Diego CA, US
Keith Conroy - Perkasie PA, US

Applied Micro Circuits Corporation - San Diego CA

H04L 12/28

370351

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.