DANIEL ALAN BERKRAM
Pilots at Clearwater Dr, Loveland, CO
License number
Colorado A4432164
Issued Date
Jun 2013
Expiration Date
Jun 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
5137 Clearwater Dr, Loveland, CO 80538
Professional information
Reducing Electrical Current Of A Signal Driver For An Optical Transmitter
US Patent:
2014002, Jan 23, 2014
Filed:
Jul 20, 2012
Appl. No.:
13/554246
Inventors:
Dacheng Zhou - Fort Collins CO, US
Daniel Alan Berkram - Loveland CO, US
Daniel Alan Berkram - Loveland CO, US
International Classification:
H04B 10/04, H04B 10/06
US Classification:
398182, 398202
Abstract:
Data for transmission by an optical transmitter that is driven by a signal driver is encoded, where the encoding is according to a criterion that specifies a reduction of an aggregate electrical current of the signal driver.
Indicating A Synchronization Point Between A Transmitter And A Receiver Of An Optical Link
US Patent:
2014002, Jan 30, 2014
Filed:
Jul 27, 2012
Appl. No.:
13/560509
Inventors:
James Donald Regan - Fort Collins CO, US
Peter David Maroni - Windsor CO, US
Daniel Alan Berkram - Loveland CO, US
Peter David Maroni - Windsor CO, US
Daniel Alan Berkram - Loveland CO, US
International Classification:
H04B 10/08
US Classification:
398 25
Abstract:
A receiver receives a predetermined pattern over an optical link from a transmitter. In response to detecting that the predetermined pattern satisfies at least one criterion, indicating that a synchronization point has been reached to allow link training of the optical link to be performed between the transmitter and receiver.
Receiver Calibration Using Offset-Data Error Rates
US Patent:
2013010, May 2, 2013
Filed:
Oct 31, 2011
Appl. No.:
13/285526
Inventors:
Dacheng ZHOU - Fort Collins CO, US
Daniel Alan Berkram - Loveland CO, US
Peter David Maroni - Windsor CO, US
Daniel Alan Berkram - Loveland CO, US
Peter David Maroni - Windsor CO, US
International Classification:
H04L 27/01
US Classification:
375232
Abstract:
During a calibration process, a data input signal is sampled using each of plural receiver equalization setting. For each of the receiver equalization settings, a respective offset-data error-rate is measured. Based on the offset-data error-rate measurements, an equalizer setting is selected for use during normal non-calibration operation of the receiver.
Receiver With Decision Feedback Equalizer
US Patent:
2013010, May 2, 2013
Filed:
Oct 31, 2011
Appl. No.:
13/285195
Inventors:
Dacheng ZHOU - Fort Collins CO, US
Daniel Alan Berkram - Loveland CO, US
Daniel Alan Berkram - Loveland CO, US
International Classification:
H04L 27/01, H04L 25/02
US Classification:
375233, 375317
Abstract:
A receiver includes a front-end amplifier, a sampler, and a decision-feedback equalizer. The front-end amplifier provides for amplifying a received input signal to yield an amplified input signal. The sampler provides for sampling the amplified input signal so as to yield a sampler output signal. The sampler output signal is a function of the amplified input signal and a reference signal coupled to a reference input of the sampler. The decision feedback equalizer provides for adjusting the reference signal as a function of feedback based at least in part on the sampler output signal.
Receiver With Tap-Coefficient Adjustments
US Patent:
2013011, May 2, 2013
Filed:
Oct 31, 2011
Appl. No.:
13/285293
Inventors:
Dacheng ZHOU - Fort Collins CO, US
Daniel Alan Berkram - Loveland CO, US
Daniel Alan Berkram - Loveland CO, US
International Classification:
G06F 11/07
US Classification:
714799, 714E11024
Abstract:
A receiver can include a sampler module for sampling a data-bearing input signal to extract data encoded in the data-bearing analog input signal. The sampling results in data-symbol sequences. The data-symbol sequences can be used to identify error events. The identified error events can be used as a basis for adjusting tap coefficients. The tap coefficients can be used in setting reference levels for the sampler module.
Low Frequency Restoration
US Patent:
2012019, Aug 2, 2012
Filed:
Jan 28, 2011
Appl. No.:
13/016850
Inventors:
Dacheng ZHOU - Fort Collins CO, US
Daniel Alan BERKRAM - Loveland CO, US
Daniel Alan BERKRAM - Loveland CO, US
International Classification:
H03K 3/00
US Classification:
307106
Abstract:
Low frequency components are removed from an input signal, and transitions in the input signal are detected at a receiver input. A feedback loop restores the low frequency components at the input of the receiver.