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<title>Programme Delivery Control</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Programme Delivery Control</span></span>

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</style><div role="note" class="hatnote navigation-not-searchable">This article is about PDC/StarText teletext programme listings. For other uses, see <a href="Startext_(disambiguation)" class="mw-redirect mw-disambig" title="Startext (disambiguation)">Startext (disambiguation)</a>.</div>

<p><b>Programme delivery control</b> (<b>PDC</b>) is specified by the <a href="Standardization" title="Standardization">standard</a> ETS 300 231 (ETSI EN 300 231), published by the <a href="European_Telecommunications_Standards_Institute" title="European Telecommunications Standards Institute">European Telecommunications Standards Institute</a> (ETSI). This specifies the signals sent as hidden codes in the <a href="Teletext" title="Teletext">teletext</a> service, indicating when transmission of a programme starts and finishes.

</p><p>PDC (also known as Enhanced Teletext Packet 8/30 Format 2) is often used together with StarText, enabling the user to select a programme to record using specially coded teletext programme listings. The combination of features is often called <b>PDC/StarText</b>.

</p><p>In Germany and some other European countries, the older standard <b>video programming system</b> (<b>VPS</b>) is in use also known as format 2. Effectively, the two systems do the same thing and most modern <a href="Videocassette_recorder" title="Videocassette recorder">VCRs</a> and stand-alone <a href="DVD_recorder" title="DVD recorder">DVD recorders</a> work with both signals.

</p><p>In digital TV (see <a href="Freeview%2B" class="mw-redirect" title="Freeview+">Freeview+</a>), the feature Accurate Recording (AR) that was based on the PDC specification for analogue recording devices is now used for a <a href="Digital_Video_Broadcasting" class="mw-redirect" title="Digital Video Broadcasting">DVB</a>-SI event based scheduling system. This was due to the BBC discontinuing the <a href="Ceefax" title="Ceefax">Ceefax</a> service.

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<div class="mw-heading mw-heading2"><h2 id="PDC_Packets">PDC Packets</h2></div>

<p>PDC is transmitted once a second in special packets addressed as magazine 8 and text row 30. Since this row is not displayable it does not interfere with normal pages. Packet 8/30 has various formats specified by ETSI and PDC is format 2. Each packet 8/30 format 2 also has a label number and there can be up to four labels transmitted at a time. Each label contains the scheduled start time and date for a programme and flags to indicate the state. Each programme is assigned a label and in general a label will follow this sequence.

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<ul><li>PRF Set – Prepare for Record. This will tell a VCR to wake up and get ready. This happens about 40 seconds before the programme is active.</li>

<li>PRF Clear – The VCR should be recording.</li>

<li>RTI – Record Terminate/Interrupt – Tells the VCR to stop recording. This label is held for 30 seconds after the programme ends.</li></ul>

<p>There are complicated rules for the case where a programme is interrupted by another one as in the case of a film with a break for news in the middle.

</p><p>There is also a TIMER flag that indicates that there is no valid PDC and that the VCR should use its own timer.

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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<p>Technical specifications and FAQ

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<ul><li><a rel="nofollow" class="external text" href="http://www.etsi.org">ETSI standards</a></li>

<li><a rel="nofollow" class="external text" href="http://www.etsi.org/deliver/etsi_en/300200_300299/300231/01.03.01_60/en_300231v010301p.pdf">ETSI EN 300 231 V1.3.1 (2003–04)</a>, Specification of the domestic video Programme Delivery Control system (PDC)</li>

<li><a rel="nofollow" class="external text" href="http://www.etsi.org/deliver/etsi_en/301700_301799/301775/01.02.01_60/en_301775v010201p.pdf">ETSI EN 301 775 V1.2.1 (2003–05)</a>, Specification for the carriage of Vertical Blanking Information (VBI) data in DVB bitstreams</li>

<li><a rel="nofollow" class="external text" href="http://www.etsi.org/deliver/etsi_ts/102300_102399/102323/01.05.01_60/ts_102323v010501p.pdf">ETSI TS 102 323 V1.5.1 (2012-01)</a>, Chapter 11: "Accurate recording" and Annex A: "Example recorder behaviour"</li>

<li><a rel="nofollow" class="external text" href="http://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.1226-1990-PDF-E.pdf">CHARACTERISTICS OF A PROGRAMME DELIVERY CONTROL (PDC) SYSTEM FOR VIDEO RECORDING (1990)</a></li>

<li><a rel="nofollow" class="external text" href="https://625.uk.com/pdc/">"Everything you ever wanted to know about PDC"</a></li>

<li><a rel="nofollow" class="external text" href="https://wiki.hummy.tv/wiki/Padding_versus_Accurate_Recording">"Padding versus Accurate Recording"</a></li>

<li><a rel="nofollow" class="external text" href="https://worldwide.espacenet.com/publicationDetails/biblio?locale=en_EP&CC=DE&NR=3313799">Original VPS invention (European Patent Office)</a> German and English</li></ul>

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</style><div id="Broadcast_video_formats33" style="font-size:114%;margin:0 4em"><a href="Video" title="Video">Broadcast video formats</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible uncollapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Television33" style="font-size:114%;margin:0 4em">Television</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Analog_television" title="Analog television">Analog</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="405-line_television_system" title="405-line television system">405 lines</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="CCIR_System_A" title="CCIR System A">System A</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="525_lines" title="525 lines">525 lines</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="CCIR_System_M" title="CCIR System M">System M</a> (Color systems: <a href="NTSC" title="NTSC">NTSC</a>, <a href="NTSC-J" title="NTSC-J">NTSC-J</a>, <a href="Clear-Vision" title="Clear-Vision">Clear-Vision</a>, <a href="PAL-M" title="PAL-M">PAL-M</a>)</li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="625_lines" title="625 lines">625 lines</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="CCIR_System_B" title="CCIR System B">System B</a>, <a href="CCIR_System_C" title="CCIR System C">C</a>, <a href="CCIR_System_D" title="CCIR System D">D</a>, <a href="CCIR_System_G" title="CCIR System G">G</a>, <a href="CCIR_System_H" title="CCIR System H">H</a>, <a href="CCIR_System_I" title="CCIR System I">I</a>, <a href="CCIR_System_K" title="CCIR System K">K</a>, <a href="CCIR_System_L" title="CCIR System L">L</a>, <a href="CCIR_System_N" title="CCIR System N">N</a> (Color systems: <a href="PAL" title="PAL">PAL</a>, <a href="PAL#PAL-N" title="PAL">PAL-N</a>, <a href="PALplus" title="PALplus">PALplus</a>, <a href="SECAM" title="SECAM">SECAM</a>)</li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="819_line" title="819 line">819 lines</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="CCIR_System_E" title="CCIR System E">System E</a>, <a href="CCIR_System_F" title="CCIR System F">F</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">1125 lines</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">1250 lines</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Audio_signal" title="Audio signal">Audio</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<li><a href="NICAM" title="NICAM">NICAM</a></li>

<li><a href="Sound-in-Syncs" title="Sound-in-Syncs">Sound-in-Syncs</a></li>

<li><a href="Zweikanalton" title="Zweikanalton">Zweikanalton (A2/IGR)</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Hidden signals</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Closed_captioning" title="Closed captioning">Captioning</a></li>

<li><a href="Teletext" title="Teletext">Teletext</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Historical</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<li><a href="Mechanical_television" title="Mechanical television">Mechanical television</a></li>

<li><a href="Field-sequential_color_system" title="Field-sequential color system">Field-sequential color system</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Digital_television" title="Digital television">Digital</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Interlaced_video" title="Interlaced video">Interlaced</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Progressive_scan" title="Progressive scan">Progressive</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<li><a href="Ultra-high-definition_television" title="Ultra-high-definition television">UHDTV</a>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">MPEG-2 Video</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS+</a><sup id="cite_ref-avs_1-0" class="reference"><a href="#cite_note-avs-1"><span class="cite-bracket">[</span>note 1<span class="cite-bracket">]</span></a></sup></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="MPEG-4_Part_2" title="MPEG-4 Part 2">MPEG-4 Visual</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<ul><li><a href="MobaHo!" title="MobaHo!">MobaHo!</a><sup id="cite_ref-mobaho_2-0" class="reference"><a href="#cite_note-mobaho-2"><span class="cite-bracket">[</span>note 2<span class="cite-bracket">]</span></a></sup></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Advanced_Video_Coding" title="Advanced Video Coding">MPEG-4 AVC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

<li><a href="ISDB-T_International" title="ISDB-T International">SBTVD</a></li>

<li><a href="MobaHo!" title="MobaHo!">MobaHo!</a><sup id="cite_ref-mobaho_2-1" class="reference"><a href="#cite_note-mobaho-2"><span class="cite-bracket">[</span>note 2<span class="cite-bracket">]</span></a></sup></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Audio_Video_Standard#Second_generation" title="Audio Video Standard">AVS2</a><sup id="cite_ref-avs_1-1" class="reference"><a href="#cite_note-avs-1"><span class="cite-bracket">[</span>note 1<span class="cite-bracket">]</span></a></sup></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="High_Efficiency_Video_Coding" title="High Efficiency Video Coding">MPEG-H HEVC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="Surround_sound" title="Surround sound">Audio</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em">

<li><a href="MPEG-1_Audio_Layer_II" title="MPEG-1 Audio Layer II">MPEG-1 Audio Layer II</a></li>

<li><a href="MPEG_Multichannel" title="MPEG Multichannel">MPEG Multichannel</a></li>

<li><a href="MPEG-H_3D_Audio" title="MPEG-H 3D Audio">MPEG-H 3D Audio</a></li></ul>

<li><a href="Broadcast_flag" title="Broadcast flag">Broadcast flag</a></li>

<li><a href="Closed_captioning" title="Closed captioning">Captioning</a></li>

<li><a href="Teletext" title="Teletext">Teletext</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: left;"><div><div class="reflist">

<li id="cite_note-avs-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-avs_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-avs_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Also used in China's DVB-S/S2 network.</span>

</li>

<li id="cite_note-mobaho-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-mobaho_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-mobaho_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Defunct.</span>

</li>

</ol></div></div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Technical_issues33" style="font-size:114%;margin:0 4em">Technical issues</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="14%3A9_aspect_ratio" title="14:9 aspect ratio">14:9 compromise</a></li>

<li><a href="Broadcast-safe" title="Broadcast-safe">Broadcast-safe</a></li>

<li><a href="Digital_cinema" title="Digital cinema">Digital cinema</a> (<a href="Digital_Cinema_Initiative" class="mw-redirect" title="Digital Cinema Initiative">DCI</a>)</li>

<li><a href="Display_motion_blur" title="Display motion blur">Display motion blur</a></li>

<li><a href="MPEG_transport_stream" title="MPEG transport stream">MPEG transport stream</a></li>

<li><a href="Reverse_Standards_Conversion" title="Reverse Standards Conversion">Reverse Standards Conversion</a></li>

<li><a href="Television_standards_conversion" title="Television standards conversion">Standards conversion</a></li>

<li><a href="Television_transmitter" title="Television transmitter">Television transmitter</a></li>

<li><a href="Video_on_demand" title="Video on demand">Video on demand</a></li>

<li><a href="Video_processing" title="Video processing">Video processing</a></li>

<li><a href="Widescreen_signaling" title="Widescreen signaling">Widescreen signaling</a></li>

<li>Templates (Analogue TV Topics)</li></ul>

</div></td></tr></tbody></table><div></div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2024-07-12" href="https://en.wikipedia.org/wiki/?title=Programme_Delivery_Control&oldid=1234122397">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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