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Ç¥ÁعøÈ£ TTAK.KO-06.0366 ±¸Ç¥ÁعøÈ£
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¿µ¹®Ç¥Áظí Mobile Magnetic Field Communication Protocol
Çѱ۳»¿ë¿ä¾à À̵¿Çü ÀÚ±âÀå Åë½ÅÀº ÀúÁÖÆÄ ´ë¿ª(30KHz~300KHz)¿¡¼­ À̵¿ Áß¿¡ ÀÚ±âÀå ½ÅÈ£¸¦ ÀÌ¿ëÇÏ¿© µ¥ÀÌÅ͸¦ ¼Û¼ö½ÅÇÏ´Â ¹«¼± Åë½Å ÇÁ·ÎÅäÄÝÀÌ´Ù. ¹«¼± Åë½ÅÀÇ Á᫐ ÁÖÆļö´Â 128kHzÀ̸ç, º¯Á¶ ¹æ½ÄÀº ÁÖÆļö ÆíÀÌ(Frequency Shift Keying; FSK) ¹æ½ÄÀ» ÀÌ¿ëÇÑ´Ù. µ¥ÀÌÅÍ Àü¼Û·ü°ú ¹«¼± ÀüÆÄ È¯°æ¿¡¼­ÀÇ ÀûÀÀ¼ºÀ» ´Ù¾çÈ­Çϱâ À§ÇÏ¿© ¸Çü½ºÅÍ(Manchester) ÄÚµù°ú ºñÁ¦·Î º¹±Í ·¹º§(Non-Return-to-Zero Level; NRZ-L) ÄÚµù, ÀÎÅ͸®ºù(Interleaving) ÄÚµù, ÇعÖ(Hamming) ÄÚµù, ½ºÅ©·¥ºí¸µÀ» »ç¿ëÇÔÀ¸·Î½á ¼ömÀÇ °Å¸®¿¡¼­ ¼ökbpsÀÇ µ¥ÀÌÅÍ Àü¼Û·üÀ» Á¦°øÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à Mobile magnetic field communication is a wireless communication that transmits/receives data using magnetic field through low frequency band(30KHz~300KHz). The wireless communication¡®s center frequency is 128KHz, and uses the Frequency Shift Keying(FSK) as the modulation method. By using the Manchester coding, Non-Return-to-Zero Level(NRZ-L) coding, Interleaving coding, Hamming Coding, and Scrambling to vary the data rate and increase the adaptability in wireless environment, it provides data of several kbps within several meters of distance.
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