Pada hari ini Tn Hj Johari telah menyentuh kembali tentang sistem-sistem yang digunapakai dalam broadcasting. Antara sistem-sistem tersebut adalah
1.NTSC (National Television System Committee)
NTSC adalah sistem televisyen analog yang digunakan di kebanyakan Amerika Utara, bahagian Amerika Selatan (kecuali Brazil, Argentina, Uruguay, dan Guiana Perancis), Myanmar, Korea Selatan, Taiwan, Jepun, Filipina, dan beberapa negara-negara kepulauan Pasifik dan wilayah.
N T S C
National Television System Committee |
|
| Lines/Field | 525/60 |
| Horizontal Frequency | 15.734 kHz |
| Vertical Frequency | 60 Hz |
| Color Subcarrier Frequency | 3.579545 MHz |
| Video Bandwidth | 4.2 MHz |
| Sound Carrier | 4.5 MHz |
PAL ( Phase Alternating Line)
P A L
Phase Alternating Line |
|||
| SYSTEM |
PAL
|
PAL N
|
PAL M
|
| Line/Field | 625/50 | 625/50 | 525/60 |
| Horizontal Freq. | 15.625 kHz | 15.625 kHz | 15.750 kHz |
| Vertical Freq. | 50 Hz | 50 Hz | 60 Hz |
| Color Sub Carrier | 4.433618 MHz | 3.582056 MHz | 3.575611 MHz |
| Video Bandwidth | 5.0 MHz | 4.2 MHz | 4.2 MHz |
| Sound Carrier | 5.5 MHz | 4.5 MHz | 4.5 MHz |
SECAM (Sequential Color with Memory)
SECAM
Sequential Couleur Avec Memoire or Sequential Color with Memory |
||
| SYSTEM |
SECAM B,G,H
|
SECAM D,K,K1,L
|
| Line/Field | 625/50 | 625/50 |
| Horizontal Frequency | 15.625 kHz | 15.625 kHz |
| Vertical Frequency | 50 Hz | 50 Hz |
| Video Bandwidth | 5.0 MHz | 6.0 MHz |
| Sound Carrier | 5.5 MHz | 6.5 MHz |
Dibawah ini menunjukkan negara-negara yang menggunakan sistem yang sediaada dalam broadcast.
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