2001 - 2002

FrameDB - Persistent storage frame-based subsystem

     OS : Multi platform
Prog. Lang’s: SQL, Java;
Overview: FrameDB has been projected to cover the needs of the object oriented system storage while aiming at the possibility to increase the overall functionality of the system keeping simplicity of its administration.
FrameDB provides abstract object model for persistent data storage. Flexible structure of the data is achieved with hierarchy of frames containing data. Inheritance, named links, frame and data referencing, linked list with automatic garbage collection and means for replication using different DBMS.
FrameDB has own Garbage Collector subsystem!

SkyAcct – Satellite IP Accounting and Management System

     OS : Linux
Prog. Lang’s: GNU C/Cpp; Java;
Overview: The SkyAcct © Accounting and Management System, is used by NET PLANET EARTH (OVERSEAS) Ltd. in two versions: the first is installed at Merlin Communications Uplink Site in Chilworth, UK, and serves the needs of the Elite™ PlanetSky customers all over Europe and the Middle East via Sirius-2 satellite; and the second - at Tellenor UK, London, used for the Sat4Links ISP dedicated services in Europe via EuropeStar satellite.
SkyAcct Platform Specifications:
Traffic Shaper Box (QoS):

Dynamic rate control based on IP (user is assigned IP by ISP or Satellite Operator)

Versatile account type support

Access list for specified periods of the day that includes: Total throughput; Speed (kbps) and burstability; Action to take if the aboves are overlimitted…

Protocol based rate control (http, ftp, etc.)

Monitoring alarms

Warn about forced restrictions activated

Total throughput monitoring. If reaches a certain value to inform the administrators to request more bandwidth.

Firewall rules and access lists

Deny all IP routing of unknown and disabled Ips; Deny all external network ICMP to the users; Deny specified ports; Allow enabled users…

Daemon for administrative interface with the local access tables

Accounting Management Box (AM)

SQL server with all user data, account types and access lists, price policies, reseller data

Procedures to analyze data from user tables and send commands to the TS machine in real-time

Interface to the daemon on the TRX to set the user table on an event of account modifications/creation

Get real-time statistics data from the TS

Bandwidth usage per minute; Total throughput at any time; Graphical representation of the usage; Total throughput that goes out to the satellite at any time; User plug-in in the browser to check current account status…

Interact with the Public/Administrative Web Interface

Real-time Billing

Price policy validity date

General and reseller (if he wants) price policy

Public Web Interface (PI)

Apache web server with SSL and signed certificate

Java, PHP

Public and Administrative sites

DVB/MPE encapsulator (ENCAP)

Daemon for user table updates (UID <-> IP <-> DVB-MAC)

The SkyAcct © won a gold medal at the Plovdiv International Technical Fair 2001.

!GlRindex

     OS : Multi platform
Prog. Lang’s: GNU C/Cpp;
Overview: Class library, implementing 1d, 2d, … Nd index. The algorithm is a patent of Tellus Tech and is based on overlapping balanced Btrees, Qtrees, etc. The parameters of the GlRindex are self-learning. The operations for which it is optimized are finding of overlaps and unions of objects in a given space region.
GlRindex is designed to be used by systems which are to visualize 2D and 3D scenes. It could be used also as an algorithm for indexing of SQL databases.
The algorithm is used in the Tellus 2.x и AirPhoto projects.

!IEC-Sys

     OS : Linux
Prog. Lang’s: Java, SQL;
Overview: The system automates the process of organizing, documenting and analysis of events at the International Exhibition Center – Sofia. The technology is Internet Client – server.
The server is based on Apache/Tomcat and the web application is based on the htmlTemplates module.
The system uses the FrameDB module for persistent storage.

!AVRdozer

     OS :---
Prog. Lang’s: AVR RISC Assembler, AVR GNU C;
Overview: AVRdozer is a programmable commercial controller, managing processes of precise mixture of substance. It is based on Atmel AVRmega128 RISC CPU, it manages up to 16 independent valves.
AVRdozer supports the OMRON CompoBus/S standard for communication and management of intelligent industrial controllers.