€•'      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ-/translations/zh_CN/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ-/translations/zh_TW/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ-/translations/it_IT/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ-/translations/ja_JP/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ-/translations/ko_KR/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ-/translations/sp_SP/driver-api/media/dtv-core”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒG/var/lib/git/docbuild/linux/Documentation/driver-api/media/dtv-core.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒDigital TV (DVB) devices”h]”hŒDigital TV (DVB) devices”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ	paragraph”“”)”}”(hŒ@Digital TV devices are implemented by several different drivers:”h]”hŒ@Digital TV devices are implemented by several different drivers:”…””}”(hhËhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒÕA bridge driver that is responsible to talk with the bus where the other
devices are connected (PCI, USB, SPI), bind to the other drivers and
implement the digital demux logic (either in software or in hardware);
”h]”hÊ)”}”(hŒÔA bridge driver that is responsible to talk with the bus where the other
devices are connected (PCI, USB, SPI), bind to the other drivers and
implement the digital demux logic (either in software or in hardware);”h]”hŒÔA bridge driver that is responsible to talk with the bus where the other
devices are connected (PCI, USB, SPI), bind to the other drivers and
implement the digital demux logic (either in software or in hardware);”…””}”(hhähžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khhàubah}”(h]”h ]”h"]”h$]”h&]”uh1hÞhhÛhžhhŸh³h Nubhß)”}”(hXI  Frontend drivers that are usually implemented as two separate drivers:

- A tuner driver that implements the logic which commands the part of
  the hardware responsible for tuning into a digital TV transponder or
  physical channel. The output of a tuner is usually a baseband or
  Intermediate Frequency (IF) signal;

- A demodulator driver (a.k.a "demod") that implements the logic which
  commands the digital TV decoding hardware. The output of a demod is
  a digital stream, with multiple audio, video and data channels typically
  multiplexed using MPEG Transport Stream [#f1]_.
”h]”(hÊ)”}”(hŒFFrontend drivers that are usually implemented as two separate drivers:”h]”hŒFFrontend drivers that are usually implemented as two separate drivers:”…””}”(hhühžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KhhøubhÚ)”}”(hhh]”(hß)”}”(hŒîA tuner driver that implements the logic which commands the part of
the hardware responsible for tuning into a digital TV transponder or
physical channel. The output of a tuner is usually a baseband or
Intermediate Frequency (IF) signal;
”h]”hÊ)”}”(hŒíA tuner driver that implements the logic which commands the part of
the hardware responsible for tuning into a digital TV transponder or
physical channel. The output of a tuner is usually a baseband or
Intermediate Frequency (IF) signal;”h]”hŒíA tuner driver that implements the logic which commands the part of
the hardware responsible for tuning into a digital TV transponder or
physical channel. The output of a tuner is usually a baseband or
Intermediate Frequency (IF) signal;”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÞhj
  ubhß)”}”(hX  A demodulator driver (a.k.a "demod") that implements the logic which
commands the digital TV decoding hardware. The output of a demod is
a digital stream, with multiple audio, video and data channels typically
multiplexed using MPEG Transport Stream [#f1]_.
”h]”hÊ)”}”(hX  A demodulator driver (a.k.a "demod") that implements the logic which
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multiplexed using MPEG Transport Stream [#f1]_.”h]”(hŒþA demodulator driver (a.k.a â€œdemodâ€) that implements the logic which
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  ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1hÙhŸh³h Khhøubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÞhhÛhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”j^  j_  uh1hÙhŸh³h Khh¶hžhubhÊ)”}”(hŒTOn most hardware, the frontend drivers talk with the bridge driver using an
I2C bus.”h]”hŒTOn most hardware, the frontend drivers talk with the bridge driver using an
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”h]”(hŒlabel”“”)”}”(hhh]”hŒ1”…””}”(hj‚  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j€  hj|  hžhhŸNh NubhÊ)”}”(hŒÍSome standards use TCP/IP for multiplexing data, like DVB-H (an
abandoned standard, not used anymore) and ATSC version 3.0 current
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abandoned standard, not used anymore) and ATSC version 3.0 current
proposals. Currently, the DVB subsystem doesnâ€™t implement those standards.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj|  ubeh}”(h]”jD  ah ]”h"]”Œf1”ah$]”h&]”j=  ajB  KjE  jF  uh1jz  hŸh³h Khh¶hžhubhŒcompound”“”)”}”(hhh]”h Œtoctree”“”)”}”(hhh]”h}”(h]”h ]”h"]”h$]”h&]”hjF  Œentries”]”(NŒdriver-api/media/dtv-common”†”NŒdriver-api/media/dtv-frontend”†”NŒdriver-api/media/dtv-demux”†”NŒdriver-api/media/dtv-ca”†”NŒdriver-api/media/dtv-net”†”eŒincludefiles”]”(j¶  j¸  jº  j¼  j¾  eŒmaxdepth”KŒcaption”NŒglob”‰Œhidden”‰Œincludehidden”‰Œnumbered”K Œ
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