【正文】
nd Brazil Teletext tele text ? It is a format to transmit data within a video signal ? Data rate is a few MBit/s ? Accepted global standard (WST) ? Secure delivery data channel ? Data error checking ? Low cost ? Unidirectional ? From 1 page to 1,000 pages Teletext Pages Subject 1. Picture 2. Sound 3. Connection 4. Information 5. Reception 6. Multimedia function TV Color Systems 1. NTSC M NTSCJ NTSC 2. PAL I D B, B1, G, H N M Nc 3. SECAM D, K, K1, L B, G World TV Systems TV Channel Allocation North America Japan UHF VHFL VHFH Analog Stereo Sound ? BTSC ? North America, South America, Taiwan ? EIAJ ? Japan ? Zweiton M ? Korea ? Zweiton (A2) ? Germany Stereo Mono SAP Digital Stereo Sound NICAM ? Near Instantaneous Companded Audio Multiplexer ? First digital audio transmission ? Near CD quality ? for Europe, China, Southeast Asia Various Models by Region PAL NTSC EU AP China NA Japan Korea TW SA Tuner PAL SECAM PAL NTSC PAL (CNmulti.) NTSC NTSCJ NTSC NTSC NTSC Stereo NICAM A2 NICAM A2 NICAM MTS EIAJ A2M MTS MTS I/O SCART S/CVBS (YPbPr) S/CVBS YPbPr S/CVBS YPbPr S/CVBS YPbPr S/CVBS Dconn. S/CVBS YPbPr S/CVBS YPbPr S/CVBS YPbPr Telete