DVB Stack for HD Terrestrial, Cable, Satellite receivers with PVR and Timeshift
Synesis DVB Stack was designed from ground up to take advantage of Linux availability on chipsets designed for set top box and digital TV. Opposed to traditional RTOS-based designs, Synesis stack has the following advantages:
Designed for hybrid DVB/IP receivers allowing broadcaster to deliver linear programming via DVB and on-demand features via operator packet network (IPTV) or over-the-top (Internet TV)
Application could be native GUI running on receiver, remote-controlled via embedded web browser for IPTV environments or exposed as SDK API for third-party application development
Takes full advantage of Linux-granted network and peripheral connectivity
USB and Network PVR and Timeshift
Essential DVB functions
Designed for single-tuner DVB-T/C/S2
Supports MPEG-2 and H.264 environments
Full compliance with ISO/IEC 62216-1 requirements
Program guide (EPG)
Information bar with now/next view of channel, program name and description
One-click recording or channel switch scheduling for the program in focus within EPG windows
Full 7-day EPG view with dynamic update in now/next, by channel or grid views
Program ordering by genre (sport, news, movies)
EPG data is being collected in background and is kept updated all the time, therefore even in a dense broadcasting environment, EPG display is momentarily
Channel management
Automatic and manual scan
Supporting up to 5,000 channels, stored in embedded high performance database
User can group, edit and lock channels via parental controls
Dynamic broadcast monitor to automatically update channel list
Logical Channel Number (LCN) support
Personal Video Recorder
Traditional PVR set top boxes included a SATA HDD in them, which leads to 2x increase of receiver BOM. With constantly lowering cost of USB hard drives and network connectivity in residential houses, recording broadcast programs to USB or network attached storage becomes an option of choice.
Any program could be scheduled by user directly from the EPG window or immediately while in view mode by one click on [record] remote control button
Unlimited number of programs could be scheduled for recording, including daily or weekly repeated recordings
A dedicated convenient view towards all scheduled and recorded video fragments
When recording scrambled channels, original content protection is ensured.
Records to attached USB storage or to network share via NFS or Samba
System monitors free space on disk and notifies user when he is approaching limits
Although designed for single-tuner environments, DVB stack supports background recording in parallel with another program playback within same mux.
Timeshift
Pausing and buffering of broadcast program to resume from exactly the same moment
Ability to seek within buffered segment or catch-up with live broadcast
Timeshift buffering could be done to extended RAM or to attached USB or network storage
User interface
By full utilization of hardware graphical accelerators available in all modern chipsets, native UI application delivers state-of-the-art user experience with UI elements transparency, animation, dynamic video scaling. If deployed on advanced chipsets featuring OpenGL ES 2.0, manufacturer or operator is unlimited in its demands towards user experience
User interface application could be licensed in source code to manufacturer for independent customization
For typical deployments, user interface adaptation comes at no cost, with very moderate pricing for more advanced customizations towards manufacturer or operator requirements
Software update
Software could be updated via USB attached storage by downloading an update file from the internet, over the network if broadband connection is available or over the air. The receiver maintains backup system image for maximum protection and rescue mode. An incremental firmware update option is available.
Conformance
DVB stack implementation conforms to ISO/IEC 62216-1.
1. ETSI EN 300 468 “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems” published by ETSI – European Telecommunications Standards Institute. Version 1.91
2. ETSI TR 101 162: "Digital broadcasting systems for television, sound and data services; Allocation of Service Information (SI) codes in Digital Video Broadcasting" published by ETSI – European Telecommunications Standards Institute. Version 1.2.1 (draft)
3. ETSI TR 101 211 “Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Service Information (SI)” published by ETSI - European Telecommunications Standards Institute. Verion 1.8.1
4. ETSI EN 300 743 “Digital Video Broadcasting (DVB); Subtitling systems” published by ETSI – European Telecommunications Standards Institute, version 1.3.1 or higher.
5. ETSI TS 101 154 “Digital Video Broadcasting (DVB); Implementation guidelines for the use of Video and Audio in Broadcasting Applications based on the MPEG-2 Transport Systems” published by ETSI – European Telecommunications Standards Institute. Version 1.8.1
6. ETSI TS 102 006-1 “Digital Video Broadcasting (DVB); Specification for System software Update in DVB systems; Part 1: Simple Profile” published by ETSI – European Telecommunications Standards Institute
7. ETSI TS 101 191 "Mega-frame for Single Frequency Network (SFN) synchronization" published by ETSI - European Telecommunications Standards Institute. Version 1.3.2
8. ETSI TS 102 366 “Digital Audio Compression (AC-3, Enhanced AC-3) Standard” published by ETSI - European Telecommunications Standards Institute Version 1.2.1
9. IEC 62216-1:2001 “Digital terrestrial television receivers for the DVB-T system – Part 1: Baseline receiver specification” published by IEC (International Electrotechnical Commission) (Latvian standart LVS EN 62216-1:2002)
10. ISO/IEC 13818-1 "Information Technology - Generic Coding of Moving Pictures and Associated Audio Recommendation H.222.0 (systems)" published by ISO - International Organization for Standardization
11. ISO/IEC 13818-1:2000 / Amd3:2004 “Transport of AVC video over ITU-T Rec H.222.0 | ISO/IEC 13818- 1 streams” published by ISO – International Organization for Standardization
12. ISO/IEC 13818-2 “Information technology - Generic coding of moving pictures and associated audio information: Video” published by ISO - International Organization for Standardization
13. ISO/IEC 13818-3 “Information technology - Generic coding of moving pictures and associated audio information - Part 3: Audio” published by ISO - International Organization for Standardization
14. ISO/IEC 14496-10 “Information technology - Coding of audio-visual objects - Part 10: Advanced Video Coding” published by ISO - International Organization for Standardization
15. ISO/IEC 11172-3:1993 “Information technology -- Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s -- Part 3: Audio” published by ISO - International Organization for Standardization
Synesis DVB Stack was designed from ground up to take advantage of Linux availability on chipsets designed for set top box and digital TV. Opposed to traditional RTOS-based designs, Synesis stack has the following advantages:
