What is SECAM?
SECAM, also written SECAM (Sequentiel couleur a memoire, French for “Sequential Color with Memory”), is an analog color television system first used in France. A team led by Henri de France working at Compagnie Française de Télévision (later bought by Thomson) invented SECAM. SECAM uses the same resolution as PAL (625 lines) but transmits the color information sequentially: R-Y on one line and B-Y on the next.
SECAM is used sparingly around the world and can be found in France, parts of Greece, Eastern Europe, Russia, and Africa. It is, historically, the first European color television standard.
Because of its great similiarities with PAL, including the same framerate and Active Area, all of the modern video systems, such as DVD, VCD and SuperVHS use PAL internally (for storing the data in the storage media, etc) and just change the color encoding to SECAM when outputting the signal back to SECAM TV.
Sequential Couleur Avec Memoire
or Sequential Color with Memory
|SYSTEM||SECAM B,G,H||SECAM D,K,K1,L|
|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|