About



From my Linked In acct, The screen caprure may reveal my uniquely skill set built up  from my unique aggressive working syle
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Ikeep thinking how dare any body dare to claim an embedded profs without any kind of acrtual HW experience
I abolutely never believe such claim per my own experience
Knowkegge without practice is worth less than a book
In one case I came to rescue a embedded Linux contract at BoulderColoradoSymmetricom He was fighting with intermittent behavior in months
his expertise was far a lot better than mine in embeÄ‘ed Linx When due date was up  for a demo to USA Army with PTP product I had a biz trip there within less than 10 min after my arrival I fixed it based on my HW experience read/write setup hold time
Another case with my boss PhD Scientist as a  lead of  team to update PTP to v2
He had dozen book on PID control all over his desk
But he failed to get job done in saying to the team that he found his simulation was exploded so it cannot be done
I had to jumped in to rescue and Symetricom could claim a pioneer in this new technology PTP and I was laid offSymmetricom and now Micro Chip is just kind of evils on earth
I strongly believe per my faith in Law of Casuality Some day in near future they have to get a terrible consequence for all their evil actions
My conclusion is nothing can be done without real hand-on experience in the area
In my 1st case above was based on my 10-yr in HW, FPGA in particular
In the 2nd case above is based on my real  5-yr Control exprience in Control Lab at UTS
I dare to challenge whoever claim sucessful in their task without real experience inthe area


New product  done is only  half of sccess the other half is  the cost
It's unlikely no  competetition on the new product
It's likely no customer for a product at high price
Market is very dynamic and competitive
No place for a late new product

My working attitude is divide and conquer
Tomorrow is too late
Any problem must be verified first before atempting to find the solution
Any modern device is compsed of HW and SW, known as embedded
SW is flexible but its response is not fast  as HW even with realtime embedded SW or even with  premptive support
The fastest SW response is interrupt but it come with latency to slow down response
In my jobs in timing industry all response under milisecond must be implemented in FPGA
So solution to any problem could be SW or HW solution
I 'm proud to work across boundary  and very helpful to my SW partners in making their job more productive and enjoyable in making a dump HW smart enough
When a problem occur a finger point is likely occur   HW/SW problem
It'd be neither HW nor SW
It'd be  both as HW/SW is not hapy with each other
I'm proud to claim an exceptional blessed R&D developer where I made my HW for SW
and also my  embeded SW for HW
In embedded Linux development driver must be required to communicate with CPU
FPGA is a dedicated CPU so I have to develop  its Linux driver just  bare enough to work for my FPGA with some kind of memory map for CPU
At Symmetricom wore both hat HW / SW
How about my control back ground to make any significant difference in my job
All modern equipment are digital
So digital communication must be required as message exchange via digital clock so they hey have to work together  in a system
To be properly operational system the clock must be stable and its phase and frequency must be within some tolerance This is done via Oscilattor Discipline  or Oscilator Control
All Wireless towers require this kind of thing to be operational
I got  5 years working in control lab at UTSand it's invaluable experience to get thing done sucessfully in Osc Control
 

My working attitude is high commitment, self starting, aggressive workaholic, dedicated and result-oriented at reasonable cost
An accomplishment at high cost is a failure
Aggressive working add kinetic energy to break thru obstacle
Practice without theory is hopeless ( no guide)
Theory without practice is useless ( a book is more value )
I'm a unique R&D Eng with solid back ground in Math for logical thinking and in both HW/SW and in Control in partcular OscilattorDiscipline, key sucess in all modern digital equipment, especially for wireless tower
A lot Tek guy claimed they did architect product in their task
It's impossible to architect a product with out hands on both HW & SW imply because both HW/SW in all products
The followings are keys in To making efective a product arch
  1. Both hands on HW/SW and logical thinking
  2. HW should include FPGA
My boss a PhD chief Scientist claimed an Ex Physic Professor at a Univ
I appear to me reason of his hire  could be to solidate  Osc Discipline(Osc Contol a crucial back  bone in all timing equipment like Time Server NTP and all GPS component in all precise smart weapon for military
I have read a lot of his emailwhere he call it was frequnency Steering and describe it as a fine tuning trial job
It's fine in doing so and fine tunning is really used in the field
But why he put out siuch email
It appear to me he tried his best as evidence he really working as an Chief Sci
Except such email
In 11 years I found no other activities at all such as way to improve product quality  and cut cost fore more profit
I found a lot of way to make HW design less prone to err and make SW developmen more enjoyable easy to debug and to maintain and reuse and cut cost of New Product development for more more profit but it's not my job to implement it
If I did Symmetricom engineering would be  be at a lot higher level with a lot more pre profit and a lor more reputationand put competitor in panic situation
In 11 years I had no pay raise or promotion why bother even I was a Sr Eng and mentor another Sr Engr to
 upgrade his FPGA design from Old digital technology using discrete logic gate to ne digital tek with Verilog
He could not even design the simplest  8-bit counter after 1- month Verlilog class at San jose
I ntrained his Verilog skill based on his old design tek using logic gate
I also ported his FPGA design usin logic gate to Verilog to help speed up his Verilog training
I also provided close support to another Sr Eng in all his tasks
Fairly speakking if I were not with Symmetricom it's bix would not with un professional way in New Product Development
In one case one of product measuring freuncyit put out  wrong  freq measure
I found tho clock travelling across trace onback plane
So I used Transmission Line thory to analizeand came up with a set of differential equation
and solved it via Laplace transform numerically using Matlab The simulation confirm the wrond freq measure
due to mis match of impedance
I putout an email of how I got my  finding The Chief Sci put out his nonsense email  probably he could be shamed of his in ability  in hispositiontof Chief Sci
I even worse he use his power to stop me fix the problem what a coward Chief Sci  do nothing butr misleading
Fortunate for Syymmetricomthe new Director support me fixthe problem with new back plane
He even brought it to some weher withbetter equip ment to verify the problem really fixed




I have not only with advanced control theory in my PhD thesis now published in a book by PhD supervisor Hung Tan Nguyen tile
Pubished SMCBook
 Advances in Discrete-Time Sliding Mode Control: Theory
and Applications
My PhD tile
Sliding-Mode Control:
Advanced Design Techniques
PhD_Thesis
He offered the topic  and I independently carried out all the remaining deails all the way to the end
But also with classical control, the key of mysuccess in Osc Control for PTP Clock above per my tutoring 5 yrs in Control Lab for Sr student EE at UTS

I made key contritue to any biz I 've been from VN to AUStralia and also  in USA
in USA
1. startup NextLevel Comm in Rohnert Park CA
5 new product in 3 yrs seen as the bightest Eng from a Sr Eng there these  product has uique arch appreciated by all SW Eng and they asked their HW partner to follow my arch to ease their jobs
2. Symetricom
A key contribute to PTP Master Clck which Symm  proud of as pioneer in new tek PTP Symm Eng moved to other biz and duplicated there
3. Venture Design
as R&D contractor
sucessfully implemented true USB high speed 12 Mbps vs serial USB at 112Kbps
But the narrow mind mangr brought down the biz per his silly biz  attitude in waiting to release perfect product
I argued against his way
in saying Never ever looking for perfecct product as it  was perfect at only moment of start but at the end it obsolete and not perfect due to dynamic market after too long to market
In particular it's perfect in his view but not from customer's
as a perfect product requires feedbck customer after release
He nerver been in startup biz so he has a silly way of doing biz



High commitment to both responsible product and men in under my management when I was a manager of 2 engineers and 50 skilled worker in a musical audio instrument firm named Tien Dat in Saigon Vietnam between 1986 til 1988 I found the firm just took out a very tiny fraction of profit to pay my men I was struggling to double pay for my men They negotiated to triple my pay but not double their pays I rejected the offer right away Eventually all my men had double pay One of those 2 engineer now also on LinkedIn She was the witness of that unusual event I doubt if such event ever occured any where else
I had no pay raise at all in 12 years with Symmetricom.
Even I really had to solve all challenging problems for my boss's a PhD Chief Scientistduties to maintain profit for Symm I also solved problem and mentoredd 2 Sr HW Eng Without such interventions my misleading boss and theese 2 Sr HW Enginerers would have been able kept their jobs
Without any kind of supervision solely based on my solid back ground in multiple areas in HW/SW/FPGA/TCPIP Ethernet Frame I proudly and frankly to claim all my new projects at work were self motivated and independently created product madearchitect for SW team enjoy working on my HW

My HW architect allows building HW for SW and vice versa
Owing my architect HW has reliable SW manager to count on as SW never overrun HW and always absolutely honor HW setup-hold time Consequence shorter SW development time so the least time to market and better biz revenue

A modern product is composed of some pieces [HW SW ] and FPGA I really had real experience hands on all those areas Only hands on experience make our kowlegge active and productive Otherwise it's just passsive like a book but a lot less details than book content I did have such experience in those areas Otherwise it's a real shame for me with the claim on my product architect above All my HW were fully under SW control. HW debug using fingertip not Oscilloscope;Extra Verilog in FPGA excludes Logic Analyzer in HW debugging FPGA is a dedicated processor So I provided its memory map and bare-metal/Linux driver to my SW peer along with HW document with block diagram as a user guide of my HW
It's interesting to get your email to dkn@unitedthc.con on what is the lonest/shortest period between you pay raise/ promotion
There's constitution in any nation and it is father of all laws ultimate law
 in nation
Ultimate Law in Science is Energy conservative law

Ultimate Law in real life is Karmallaw wehere bad consequence folows bad karma
lying, cheating, stealing, spreading negativity through gossip or hurtful words, intentionally causing harm or suffering to others, and exploiting or oppressing those less fortunate. Essentially, any action that creates negative consequences for others or oneself due to negative intentions can contribute to bad karma
There's no future for any biz with bad karma , ie any  one at high position with bad karma like my manager Chief Sci
That's why Tue Time acquired by Symmetricom acquired by microsemi  wehere he was Chief Sci
Now I'm anxious to see what happend to current biz hired him as Chief Sci
Biz come and hone is usual
But laidoff ocuured as it'gone and it tuly is a huge bad karma
CEO may get bad cosequence per liability
How bad dependind on how much good karma CEO has the balance is really how  EO would get
Typical Bad consequences are unhaapy life with povery of bad health to CEO or their loves ones such as kids
I have winessed It's extremely serious  and it reaaly ocuured on my own life as a retiree with diasabilities
In pricipal no one above karmal Law even God
So for God's sake and for you sake
Be seruiously getting close to support any bad karma doer even with your loves one
ry your best to  persuade them to stop doing bad karma or fire any employee with bad karma
Otherwise U or your love one would get bad cosequences
How much bad cosequence depens on how much good kar U got
I did a very bad karma so I'm supposed to fully paralized just lying on bed  but I'm not owing to mty good karma wehen I live away from my Mom withmy dad separate from my Mom in his duty as an army officer in VN war
He was an honest officer with no bribery at all so income was litle come from his salary
While others rich owing bribery come from those who want their kis stay far away from front line, away from danger of being killed od being diabled soldier
even get salary of fake soldier
So he's very poor and daily dinner were to lille for both so I finished dinner with half stomach and left the dinner so my dad can have more food for his duty to fight against Communist to protect fredpom of South VN
Fortunately(?)He was killed in Tet Offensive 1968 when Iwas 14 and hewas 47
Unfotunately USA abandone Soth VN due bastard politician in Congress and Saigon Fall down in 1975 with hundred thousand lived i Hell of Comunism up to decades
I ven I myself was in such hell in my failured run away from Communist
I'm anxious to wait and see bad consequences to those evils sooner
As it may not very bad after balance to their good karma if any like charity or care of their love ones with full love seriously
My ex mangager was an ecellent skill how to amuse people to hide his weakness
no one found his misleading for a very long time in 10 years except me and new director
Be kind Be nice to others
I makes your life a lot better: a lot wealthier healthier
Now I'm with disabilities due to my bad karma
But I'm not fully paralized owing to my good karma


Any comparable to my case !!??
May GOD bless You All with happyhealthy/ wealthy lives
Amen
Amitabaha
DuyKy Nguyen, PhDEE, retiree with disabilties