CCIR System D

Analog TV systems global map, with System D in pink.

CCIR System D is an analog broadcast television system used in Bulgaria, Latvia, Lithuania, Poland, Romania, Slovakia, Czech Republic, Hungary, Albania, and the People's Republic of China, Mongolia, Kyrgyzstan, North Korea, Tajikistan, Turkmenistan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kazakhstan, Moldova, Russia, Ukraine, and Belarus paired with the PAL/SECAM colour.[1][2][3][4]

Initially known as the I.B.T.O. 625-line system this was the first 625-line system, developed by Mark Krivosheev in 1948,[5][6] and later associated with the SECAM and PAL color systems. Used on VHF only in most countries, it usually combined with System K on UHF. In China, it is used for both VHF and UHF.[7][8]

Specifications

The general specifications for System D are listed below:[9]

Plan showing VHF frequency ranges for ITU Systems

Television channels were arranged as follows:[10][11]

Original OIR assignments
System D 625 lines
Channel Video carrier (MHz) Audio carrier (MHz)
I 41.75 48.25
II 49.75 56.25
III 59.25 65.75
IV 77.25 83.75
1 145.25 151.75
2 153.25 159.75
3 161.25 167.75
4 169.25 175.75
5 177.25 183.75
6 185.25 191.75
7 193.25 199.75
8 201.25 207.75
9 209.25 215.75
Assignments since 1965
System D 625 lines
Channel Video carrier (MHz) Audio carrier (MHz)
1 49.75 56.25
2 59.25 65.75
3 77.25 83.75
4 85.25 91.75
5 93.25 99.75
6 175.25 181.75
7 183.25 189.75
8 191.25 197.75
9 199.25 205.75
10 207.25 213.75
11 215.25 221.75
12 223.25 229.75
Channel arrangement for China (since 1970[12])
Channel Frequency range (MHz) Video carrier (MHz) Audio carrier (MHz) DTMB center frequency (MHz)
Band I
1 48.5 - 56.5 49.75 56.25 52.5
2 56.5 - 64.5 57.75 64.25 60.5
3 64.5 - 72.5 65.75 72.25 68.5
4 76 - 84 77.25 83.75 80
5 84 - 92 85.25 91.75 88
Band III
6 167 - 175 168.25 174.25 171
7 175 - 183 176.25 182.75 179
8 183 - 191 184.25 190.75 187
9 191 - 199 192.25 198.75 195
10 199 - 207 200.25 206.75 203
11 207 - 215 208.25 214.75 211
12 215 - 223 216.25 222.75 219
UHF System D arrangement for China
Ch Video (MHz) DTMB (MHz) Audio (MHz)
13 471.25 474 477.75
14 479.25 482 485.75
15 487.25 490 493.75
16 495.25 498 501.75
17 503.25 506 509.75
18 511.25 514 517.75
19 519.25 522 525.75
20 527.25 530 533.75
21 535.25 538 541.75
22 543.25 546 549.75
23 551.25 554 557.75
24 559.25 562 565.75
25 605.25 610 611.75
26 613.25 618 619.75
27 621.25 626 627.75
28 629.25 634 635.75
29 637.25 642 643.75
30 645.25 650 651.75
31 653.25 658 659.75
32 661.25 666 667.75
33 669.25 674 675.75
34 677.25 682 683.75
35 685.25 690 691.75
36 693.25 698 699.75
37 701.25 706 707.75
38 709.25 714 715.75
39 717.25 722 723.75
40 725.25 730 731.75
41 733.25 738 739.75
42 741.25 746 747.75
43 749.25 754 755.75
44 757.25 762 763.75
45 765.25 770 771.75
46 773.25 778 779.75
47 781.25 786 787.75
48 789.25 794 795.75
49 797.25 802 803.75
50 805.25 810 811.75
51 813.25 818 819.75
52 821.25 826 827.75
53 829.25 834 835.75
54 837.25 842 843.75
55 845.25 850 851.75
56 853.25 858 859.75
57 861.25 866 867.75
58 871.25 874 877.75
59 879.25 882 885.75
60 887.25 890 893.75
61 895.25 898 901.75
62 903.25 906 909.75
  • The original assignments of channels 25 to 57 were 2 MHz higher in frequency until c. 1984. Channels 58 to 62 were deleted at this time.

See also

References

  1. ^ Report 624-4 Characteristics of television systems (PDF). UIT. 1990.
  2. ^ "World Analogue Television Standards and Waveforms". www.paradiso-design.net. 30 August 2012. Archived from the original on 30 August 2012.
  3. ^ "Weltweite Fernsehsysteme (NTSC, PAL und SECAM)". www.paradiso-design.net. 2005. Retrieved 2023-03-06.{{cite web}}: CS1 maint: deprecated archival service (link)
  4. ^ Amadeus Trappe, Raffael (2005). "Weltweite Fernsehsysteme (NTSC, PAL und SECAM)". www.paradiso-design.net. Retrieved 2023-06-05.{{cite web}}: CS1 maint: deprecated archival service (link)
  5. ^ ""M.I. Krivosheev: Participation in the development of mass TV broadcasting" - an exhibition at Ostankino TV Center".
  6. ^ "Mark Iosifovich Krivosheev (1922-2018)".
  7. ^ 中华人民共和国国家标准 PAL-D制电视广播技术规范 GB 3174-1995 (in Chinese (China)). 中国标准出版社. 20 December 1995.
  8. ^ 中华人民共和国国家标准 有线电视频率配置 GB/T 17786-1999 (in Chinese (China)). 中国标准出版社. 12 July 1999. pp. 3–5.
  9. ^ "World Analogue Television Standards and Waveforms". 2007-05-15. Archived from the original on 2007-05-15. Retrieved 2023-04-13.
  10. ^ "World Analogue Television Standards and Waveforms". www.pembers.freeserve.co.uk. Archived from the original on 30 August 2012. Retrieved 12 January 2022.
  11. ^ "World Analogue Television Standards and Waveforms". www.pembers.freeserve.co.uk. Archived from the original on 30 August 2012. Retrieved 12 January 2022.
  12. ^ "上海广播电视志". 上海通 (in Chinese (China)). 上海市地方志办公室. Retrieved 15 July 2023.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.