Tata Elxsi has rich expertise in the entire DTV space. Leveraging extensive experience with various DTV technology standards and in designing allied products, Tata Elxsi has developed its own IP in the form of product reference solutions, re-usable components/modules and middleware stacks.
Tata Elxsi has a complete DVB-T middleware solution compliant with NorDig and DVB-specifications. The middleware stack has been integrated into several products now available in the market.
FEATURES
- Middleware compliant with NorDig (basic profile) and DVB-T specifications
- Written to well-defined Hardware Abstraction Layer (HAL) specifications
- EPG harvesting for 7 days (number of days is configurable)
- Support for buffer management for faster access to harvested EPG data
- Support for Teletext level 1.5, DVB and EBU subtitles
- Support for parental control
- Middleware with a pool of utilities including some diagnostics utilities
- Middleware with flexible PSI/SI parser supporting all forms of front-end DVB-T/S/C
DVB-T middleware functionalities
- Parsing and version monitoring of SI/PSI tables
- Support for full & manual scan and detection of new channels
- Three lists maintained: one each for TV, radio and data services
- Middleware with caching methods (e.g., EPG buffer manager) helping to minimize memory consumption
- Maintaining of system time by parsing TDT/TOT tables
- Capable of picking up new channels that are added dynamically
- Capable of detecting service replacement (EPG, Barker channel, CA replacement, service replacement) and tuning to the replacement service
ESG (Electronic Service Guide) features
- ESG displaying all visible services: services with service visibility ‘0’ hidden in the ESG
- Support for sorting of services in the ESG according to service type and LCN (logical channel number)
- Support for user-selection of services for tuning
- ESG displaying details of present/following events for the selected service (e.g., description, network parameters)
- User edit/set options (e.g., delete display services, set program reminder)
- Provision for distinguishing events displayed based on event type (from content nibbles of the event)
DVB-T middleware statistics
- Low footprint of approximately 2.5 megabytes including libraries of all the modules and utilities
- Run time memory < 4 megabytes of RAM
- Channel zap time < 1.5 seconds
- Channel scan time ~ 300-400 sec (for about 100 frequencies)*
Business models
Flexible licensing options from Tata Elxsi enabling OEMs get to market faster
- One-time purchase option
- NRE + royalty based licensing option DVB-T middleware stack that can be easily ported to any proprietary hardware platform
Architecture
