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r: 261270
b: refs/heads/master
c: 0be153e
h: refs/heads/master
v: v3
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Mauro Carvalho Chehab committed Jul 27, 2011
1 parent cda2941 commit 8d17d61
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 6cb77a85aaf317e0b6e513f70eca6ebe34f9cdf0
refs/heads/master: 0be153efb18141162bcaa8ea3de6b94d2d92397e
33 changes: 19 additions & 14 deletions trunk/Documentation/DocBook/media/dvb/frontend.xml
Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,15 @@ OFDM frontends the <constant>frequency</constant> specifies the absolute frequen
};
</programlisting>
</section>
<section id="dvb-vsb-parameters">
<title>VSB parameters</title>
<para>DVB-T frontends are supported by the <constant>dvb_vsb_parameters</constant> structure:</para>
<programlisting>
struct dvb_vsb_parameters {
fe_modulation_t modulation; /&#x22C6; modulation type (see above) &#x22C6;/
};
</programlisting>
</section>
<section id="dvb-ofdm-parameters">
<title>OFDM parameters</title>
<para>DVB-T frontends are supported by the <constant>dvb_ofdm_parameters</constant> structure:</para>
Expand All @@ -277,15 +286,6 @@ OFDM frontends the <constant>frequency</constant> specifies the absolute frequen
};
</programlisting>
</section>
<section id="dvb-vsb-parameters">
<title>VSB parameters</title>
<para>DVB-T frontends are supported by the <constant>dvb_vsb_parameters</constant> structure:</para>
<programlisting>
struct dvb_vsb_parameters {
fe_modulation_t modulation; /&#x22C6; modulation type (see above) &#x22C6;/
};
</programlisting>
</section>
<section id="fe-spectral-inversion-t">
<title>frontend spectral inversion</title>
<para>The Inversion field can take one of these values:
Expand All @@ -304,7 +304,9 @@ itself.
</section>
<section id="fe-code-rate-t">
<title>frontend code rate</title>
<para>The possible values for the <constant>FEC_inner</constant> field are
<para>The possible values for the <constant>fec_inner</constant> field used on
<link refend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and
<link refend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are:
</para>
<programlisting>
typedef enum fe_code_rate {
Expand All @@ -327,9 +329,12 @@ detection.
</para>
</section>
<section id="fe-modulation-t">
<title>frontend modulation type for QAM and OFDM</title>
<para>For cable and terrestrial frontends (QAM and OFDM) one also has to specify the quadrature
modulation mode which can be one of the following:
<title>frontend modulation type for QAM, OFDM and VSB</title>
<para>For cable and terrestrial frontends, e. g. for
<link refend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>,
<link refend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and
<link refend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>,
it needs to specify the quadrature modulation mode which can be one of the following:
</para>
<programlisting>
typedef enum fe_modulation {
Expand All @@ -352,7 +357,7 @@ modulation mode which can be one of the following:
<para>Finally, there are several more parameters for OFDM:
</para>
<section id="fe-transmit-mode-t">
<title>Number of carriers per channel, on OFTM modulation</title>
<title>Number of carriers per channel</title>
<programlisting>
typedef enum fe_transmit_mode {
TRANSMISSION_MODE_2K,
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