Knowledge (XXG)

Television lines

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picture. For example, on 4 by 3 inches (10.2 cm × 7.6 cm) monitor with 400 TVL, 200 vertical dark lines can be counted over 3 inches (7.6 cm) width on monitor (Note that the 3 inches (7.6 cm) of monitor height is used rather than the 4 inches (10 cm) of whole monitor width).
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TVL is defined as the maximum number of alternating light and dark vertical lines that can be resolved per picture height. A resolution of 400 TVL means that 200 distinct dark vertical lines and 200 distinct white vertical lines can be counted over a horizontal span equal to the height of the
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TVL is defined as the maximum number of alternating light and dark vertical lines that can be resolved per picture height.
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lines is always transmitted. However, several factors impede the ability to display fine detail within a line:
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used. It should not be confused with the number of horizontal scanning lines of such systems, which e.g.
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TVL is an inherent quality of a camera or monitor, influenced by the visual bandwidth of the
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The reception and reproduction of the picture on a TV set.
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EIA 1956 video resolution target, used to measure TVL
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The transmission of the TV signal e.g. broadcast by
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Archived from 156:Since analog transmission of video is 762:Direct-broadcast satellite television 7: 122:adding citations to reliable sources 652:Vestigial sideband modulation (VSB) 16:Horizontal resolution specification 14: 94: 647:Quadrature amplitude modulation 811:Television channel frequencies 1: 782:Digital television transition 611:Multichannel television sound 854:Field strength in free space 555:Horizontal blanking interval 752:Superheterodyne transmitter 160:-based, the same number of 988: 590:Vertical blanking interval 565:Nominal analogue blanking 269:"Overview and resolution" 48:EIA 1956 resolution chart 884:Television interference 757:Television receive-only 806:Microwave transmission 772:Terrestrial television 767:Television transmitter 727:Intermediate frequency 520:Chrominance subcarrier 32: 24: 972:Television technology 678:Broadcast transmitter 30: 22: 920:Zero reference pulse 905:Field strength meter 642:Frequency modulation 550:Horizontal scan rate 216:Jack, Keith (2005). 118:improve this section 859:Noise (electronics) 722:Intercarrier method 682:Transmitter station 317:broadcasting topics 64:transmission system 747:Split sound system 697:Differential phase 33: 25: 959: 958: 874:Radiation pattern 692:Differential gain 314:Analog television 218:Video Demystified 154: 153: 146: 979: 801:Frequency offset 742:Residual carrier 687:Cavity amplifier 585:Television lines 307: 300: 293: 284: 277: 276: 265: 256: 255: 253: 251: 246: 238: 232: 231: 213: 149: 142: 138: 135: 129: 98: 90: 44:image resolution 36:Television lines 987: 986: 982: 981: 980: 978: 977: 976: 962: 961: 960: 955: 924: 900:Distortionmeter 888: 825: 786: 717:Frequency mixer 673:Antenna (radio) 656: 630: 599: 540:Composite video 484: 433: 319: 311: 281: 280: 267: 266: 259: 249: 247: 244: 240: 239: 235: 228: 215: 214: 210: 205: 192: 150: 139: 133: 130: 115: 99: 88: 56: 17: 12: 11: 5: 985: 983: 975: 974: 964: 963: 957: 956: 954: 953: 948: 943: 938: 932: 930: 926: 925: 923: 922: 917: 912: 907: 902: 896: 894: 890: 889: 887: 886: 881: 876: 871: 866: 861: 856: 851: 846: 841: 835: 833: 827: 826: 824: 823: 818: 813: 808: 803: 797: 795: 788: 787: 785: 784: 779: 774: 769: 764: 759: 754: 749: 744: 739: 734: 729: 724: 719: 714: 709: 707:Dipole antenna 704: 699: 694: 689: 684: 675: 670: 664: 662: 658: 657: 655: 654: 649: 644: 638: 636: 632: 631: 629: 628: 623: 621:Sound-in-Syncs 618: 613: 607: 605: 601: 600: 598: 597: 592: 587: 582: 577: 572: 567: 562: 557: 552: 547: 542: 537: 532: 527: 522: 517: 512: 510:Blanking level 507: 502: 492: 490: 486: 485: 483: 482: 477: 472: 467: 462: 457: 452: 447: 441: 439: 435: 434: 432: 431: 417: 375: 365: 360: 355: 345: 340: 335: 329: 327: 321: 320: 312: 310: 309: 302: 295: 287: 279: 278: 275:on 2013-07-17. 257: 233: 226: 207: 206: 204: 201: 200: 199: 191: 188: 187: 186: 183: 172: 169: 152: 151: 102: 100: 93: 87: 84: 55: 52: 15: 13: 10: 9: 6: 4: 3: 2: 984: 973: 970: 969: 967: 952: 949: 947: 944: 942: 939: 937: 934: 933: 931: 927: 921: 918: 916: 913: 911: 908: 906: 903: 901: 898: 897: 895: 891: 885: 882: 880: 877: 875: 872: 870: 867: 865: 862: 860: 857: 855: 852: 850: 847: 845: 842: 840: 837: 836: 834: 832: 828: 822: 819: 817: 814: 812: 809: 807: 804: 802: 799: 798: 796: 793: 789: 783: 780: 778: 775: 773: 770: 768: 765: 763: 760: 758: 755: 753: 750: 748: 745: 743: 740: 738: 735: 733: 730: 728: 725: 723: 720: 718: 715: 713: 710: 708: 705: 703: 700: 698: 695: 693: 690: 688: 685: 683: 679: 676: 674: 671: 669: 666: 665: 663: 659: 653: 650: 648: 645: 643: 640: 639: 637: 633: 627: 624: 622: 619: 617: 614: 612: 609: 608: 606: 602: 596: 595:White clipper 593: 591: 588: 586: 583: 581: 578: 576: 573: 571: 568: 566: 563: 561: 558: 556: 553: 551: 548: 546: 545:Frame (video) 543: 541: 538: 536: 533: 531: 528: 526: 523: 521: 518: 516: 513: 511: 508: 506: 503: 501: 497: 494: 493: 491: 487: 481: 478: 476: 473: 471: 468: 466: 463: 461: 458: 456: 453: 451: 448: 446: 443: 442: 440: 438:Color systems 436: 429: 425: 421: 418: 415: 411: 407: 403: 399: 395: 391: 387: 383: 379: 376: 373: 369: 366: 364: 361: 359: 356: 353: 349: 346: 344: 341: 339: 336: 334: 331: 330: 328: 326: 322: 318: 315: 308: 303: 301: 296: 294: 289: 288: 285: 274: 270: 264: 262: 258: 243: 237: 234: 229: 227:0-7506-7822-4 223: 219: 212: 209: 202: 197: 194: 193: 189: 184: 181: 177: 173: 170: 167: 166: 165: 163: 159: 148: 145: 137: 127: 123: 119: 113: 112: 108: 103:This section 101: 97: 92: 91: 85: 83: 81: 77: 73: 69: 65: 60: 53: 51: 49: 45: 41: 37: 29: 21: 946:Hanover bars 737:Pre-emphasis 661:Transmission 626:Zweikanalton 584: 530:Color killer 455:Clear-Vision 273:the original 248:. 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Index



image resolution
EIA 1956 resolution chart
transmission system
625 lines
PAL
525 lines
NTSC

cite
sources
improve this section
adding citations to reliable sources
removed
Learn how and when to remove this message
scan line
radio
cable
Kell factor
ISBN
0-7506-7822-4
"QA-70-1 Video Resolution Pattern (EIA-1956) Product Specifications"


"Overview and resolution"
the original
v
t
e

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