Documentation/media/uapi/dvb/frontend.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _dvb_frontend:
   4
   5 ################
   6 DVB Frontend API
   7 ################
   8 The DVB frontend API was designed to support three types of delivery
   9 systems:
  10
  11 -  Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H,
  12    DTMB, CMMB
  13
  14 -  Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B), ISDB-C
  15
  16 -  Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS
  17
  18 The DVB frontend controls several sub-devices including:
  19
  20 -  Tuner
  21
  22 -  Digital TV demodulator
  23
  24 -  Low noise amplifier (LNA)
  25
  26 -  Satellite Equipment Control (SEC) hardware (only for Satellite).
  27
  28 The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``.
  29 Data types and ioctl definitions can be accessed by including
  30 ``linux/dvb/frontend.h`` in your application.
  31
  32 .. note::
  33
  34    Transmission via the internet (DVB-IP) is not yet handled by this
  35    API but a future extension is possible.
  36
  37 On Satellite systems, the API support for the Satellite Equipment
  38 Control (SEC) allows to power control and to send/receive signals to
  39 control the antenna subsystem, selecting the polarization and choosing
  40 the Intermediate Frequency IF) of the Low Noise Block Converter Feed
  41 Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
  42 (digital SEC) specification is available at
  43 `Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
  44
  45
  46 .. toctree::
  47     :maxdepth: 1
  48
  49     query-dvb-frontend-info
  50     dvb-fe-read-status
  51     dvbproperty
  52     frontend_fcalls
  53     frontend_legacy_dvbv3_api