diff --git a/Documentation/DocBook/media/dvb/frontend.xml b/Documentation/DocBook/media/dvb/frontend.xml index b52f66abbbd40f28e08fd5f0a12bc88fc1374826..65a790e196bc706150b6d1abea8512e22d7c7f79 100644 --- a/Documentation/DocBook/media/dvb/frontend.xml +++ b/Documentation/DocBook/media/dvb/frontend.xml @@ -23,40 +23,45 @@ cards, in which case there exists no frontend device.
Frontend type -For historical reasons frontend types are named after the type of modulation used in +For historical reasons, frontend types are named by the type of modulation used in transmission. The fontend types are given by fe_type_t type, defined as: Frontend types - + &cs-def; fe_type Description + DTV_DELIVERY_SYSTEM equivalent type FE_QPSK For DVB-S standard + SYS_DVBS FE_QAM - For DVB-C standard + For DVB-C annex A/C standard + SYS_DVBC_ANNEX_AC FE_OFDM - For DVB-T standard. Also used for ISDB-T on compatibility mode + For DVB-T standard + SYS_DVBT FE_ATSC - For ATSC standard (terrestrial or cable) + For ATSC standard (terrestrial) or for DVB-C Annex B (cable) used in US. + SYS_ATSC (terrestrial) or SYS_DVBC_ANNEX_B (cable)
Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're -supported via the new FE_GET_PROPERTY/FE_GET_SET_PROPERTY method. +supported via the new FE_GET_PROPERTY/FE_GET_SET_PROPERTY ioctl's, using the DTV_DELIVERY_SYSTEM parameter.