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- .. -*- coding: utf-8; mode: rst -*-
- .. _dvb_frontend:
- #######################
- Digital TV Frontend API
- #######################
- The Digital TV frontend API was designed to support three groups of delivery
- systems: Terrestrial, cable and Satellite. Currently, the following
- delivery systems are supported:
- - Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H,
- DTMB, CMMB
- - Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B)
- - Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS
- The Digital TV frontend controls several sub-devices including:
- - Tuner
- - Digital TV demodulator
- - Low noise amplifier (LNA)
- - Satellite Equipment Control (SEC) [#f1]_.
- The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``.
- Data types and ioctl definitions can be accessed by including
- ``linux/dvb/frontend.h`` in your application.
- .. note::
- Transmission via the internet (DVB-IP) and MMT (MPEG Media Transport)
- is not yet handled by this API but a future extension is possible.
- .. [#f1]
- On Satellite systems, the API support for the Satellite Equipment
- Control (SEC) allows to power control and to send/receive signals to
- control the antenna subsystem, selecting the polarization and choosing
- the Intermediate Frequency IF) of the Low Noise Block Converter Feed
- Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
- (digital SEC) specification is available at
- `Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
- .. toctree::
- :maxdepth: 1
- query-dvb-frontend-info
- dvb-fe-read-status
- dvbproperty
- frontend_fcalls
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