Home Page of LZ1BJR

At the moment I am student at "Technical Univercity - Plovdiv, Bulgaria". Subject: "Computer Systems & Technologies". My English is not very well. If anyone thinks thah his Bulgarian is better than my English then let visit "Bulgarian Link" situated in home of my WEB page!

At the moment I have no work and I am searching for a JOB. But I am not able to relocate. I am able to work in home and to comunicate by Internet /EMails, Attachement.../

Click HERE to get my cover letter -> my_resume.pdf

Click HERE to get my full CV (resume) -> cv.pdf

I am working on few interesting projects. They are contemporary projects. One of these projects are based on analogue electronics, others are based on computer programing and PC. Both of the projects are directed to MUSIC and SOUNDS, Hi-Fi. I'll tell you about some of these projects:

1. Loseless Digital Sound Compression.

As you know there are standard named MP3. It gives good performance but there is a loose in sound quality. I invent a method to compress audio data so after decompression it gaves absolutely the same input signal. I tested this by direct digital comparison of original and decompressed file. There are NO diferences! My method is based on decrement of the information contents of source signal. After that the data stream is compressed by one of the most popular methods like: LZW, Huffman, Dinamic Huffman or Aretmetic coding. I reach some good results but the process can be optimized more! Now I am serching for a company or a musica recording studio which is interested of this algorithm and will sponsor me. I want to go deeper into this project. Everything what I reach will be in possesion of this company. If you are interested in, please visit link at the bottom of this page!

I konw these program languages: Visual C++ for Windows and MS-DOS, Borland Pascal for DOS, Assembler for Intel and MicroChip "PIC" based one-chip micro-processors. I have good experience with HTML. I have basic knowledge on programming with ASP and DataBase.

2. Absolutely ideal loudspeaker

This is method by which I decrease resonance distorsions and other distorsions spring up from membrane movement. This is done by LOOP circuit which looks for membrane movement, but there is no control hardware on membrane. Error signals goes directly from the speaker coil by unconvertional circuit connections.

It gaves more sharples sound with smallest speaker box!

Soon be ready prorotype for Hi-Fi stereo PHONES.

I want to mention that the method has not only one LOOP circuit. It gave possibility to use power amplifier with high energy work class like Class D, or Digital Amplifier. All the distorsions will be compensate by not local loop circuit.

am searching for a sponsor, so if any company is interested by this let contact with me! If you are interested in, please visit link at the bottom of this page!

I have best knowledge on makeing: low signal amplifiers, analogie circuits, volume meters, equalizers, power amplifiers, development of its circuit diagrams. I developed a one-chip peak meter module with FLD or LED display, PEAK-HOLD, Scale factor, 4 indepednedt inputs. /made processor programme and buitd VU board/

3. Wireless Digital Communication

I test some circuits for wireless transmition digital information for transmition with power nearest or low than noice level. Two or more system of this type can be worked on the same frequency without any colisions. The modulation is DSSS with 64, 96 or more "chips". This meant that TX power is lowest 64, 96 or more than the power need to transmit this signal normally.

Click HERE to get my publication about DSSS -> dsss.pdf

As you know this type of modulation is newer. But the most important for this type of transmition is PHASE RECOVERY circuit of the carier. I invent two stadge phase recovery circuit. The first is analogue based and second is digitally based method for recovery. This makes transmition more stabillity and decrease errors.

You can read about another project, developed my me:

Click HERE to get my example for Compelemtary Code Keying - CCK -> cck.pdf

Click HERE to get my PPT presentation of - CCK -> cck.ppt

4. DRM - Digital Radio Broadcasting below 30MHz

I'm starting a new project about DRM radio reveiver. The idea is to build high-end radio receiver based on AAC and MPEG4 technique and digital radio transmission based on OFDM (Orthogonal Frequency Division Multiplexing).

You can join to our forum in the IRC at:

Server: irc.techno-link.com (or irc.unibg.org)
Port: 6667
Channel: #drm

For a information about DRM prease visit this page: www.drm.org

About me!

I am a "DOS" fan! I hate "Windows 9X". Infact Windows 2000 & Windows NT are perfect OS but they want too many system resources. I do not like "LINUX". UNIX is a interesting OS but is so different... It is not very easy to configure it.

I am a single, not married and I do not intend to marry soon. As I said lately I live in Bulgaria. This is nice country which I love much! Bulgarian nature is so lovely and beautifil. I have many good and real friends!

At the moment I am not working. I worked for 3 years in a not very small company as a System Administrator, Programmer, Web Master and Designer. But I want to invent, not to repair! I want to work in a research and development company. In bulgaria there are no that sort of companies. Bulgaria has very hard economic sitiation. Peoble in Bulgaria live on the starvation line and for Bulgarian companies first thing to do is to scratch a living. There are no Research, no Development, but there are many people wich want to do this.

I have so many untraditional ideas for research...

Click HERE to get my cover letter -> my_resume.pdf

Click HERE to get my full CV (resume) -> cv.pdf