EIAJ MTS
Bilingual and stereo sound television programs started being broadcast in Japan in October 1978 using a system developed by NHK Technical Research Labs. This system was modified and standardized by the EIAJ in January 1979.
The original version M TV standard has a monaural FM transmission at 4.5 MHz. For Japanese multichannel television sound a second channel, or sub-channel is added to the original signal by using an FM sub-carrier at twice the line frequency (Fh, or 15374 Hz). In order to identify the different modes (mono, stereo, or dual sound) a control tone is also added at 3.5 times the line frequency.
v • d • eBroadcast video formatsTelevisionAnalog525 linesNTSC · NTSC-J · PAL-M625 lines PAL · PAL-N/NC · PALplus · SECAMAudioBTSC (MTS) · NICAM-728 · Zweiton (A2 / IGR) · EIAJ Hidden signals Captioning · Teletext · CGMS-A · GCR · PDC · VBI · VEIL · VITC · WSS · XDSDefunct systems Pre-1940 · 405 lines · 819 lines · Baird-Nipkow · MAC · MUSELink former page on this page
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http://wikipedia.atpedia.jp/wiki/%E9%BA%BB%E5%A9%86%E8%B1%86%E8%85%90
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