706f8a9975
There are several notes and warning mesages in the middle of the media docbook. Use the ReST tags for that, as it makes them visually better and hightlights them. While here, modify a few ones to make them clearer. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
52 lines
1.5 KiB
ReStructuredText
52 lines
1.5 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _dvb_frontend:
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################
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DVB Frontend API
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################
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The DVB frontend API was designed to support three types of delivery
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systems:
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- Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H,
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DTMB, CMMB
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- Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B), ISDB-C
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- Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS
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The DVB frontend controls several sub-devices including:
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- Tuner
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- Digital TV demodulator
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- Low noise amplifier (LNA)
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- Satellite Equipment Control (SEC) hardware (only for Satellite).
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The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``.
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Data types and ioctl definitions can be accessed by including
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``linux/dvb/frontend.h`` in your application.
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.. note:: Transmission via the internet (DVB-IP) is not yet handled by this
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API but a future extension is possible.
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On Satellite systems, the API support for the Satellite Equipment
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Control (SEC) allows to power control and to send/receive signals to
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control the antenna subsystem, selecting the polarization and choosing
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the Intermediate Frequency IF) of the Low Noise Block Converter Feed
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Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
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(digital SEC) specification is available at
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`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
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.. toctree::
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:maxdepth: 1
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query-dvb-frontend-info
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dvb-fe-read-status
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dvbproperty
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frontend_fcalls
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frontend_legacy_dvbv3_api
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