ˆ‰Èîô› ˘Âú‡Iúˆó - LG LCD & Plasma TV Manual
32lh40, 37lh40, 42lh40, 47lh40, 32lh50, 37lh50, 42lh50, 47lh50, 55lh50, 42lh90, 47lh90, 19lg31, 22lg31, 26lg31, 32lg33, 32lf51, 42lf51, 47lf51, 19lu50, 22lu50, 26lu50, 19lu40, 22lu40, 19lh20, 22lh20, 26lh20, 32lh20, 37lh20, 42lh20, 32lh3, 37lh3, 42lh3, 47
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¶∞ƒ∞ƒΔ∏ª∞
¶∞ƒ∞ƒΔ∏ª∞
∫ˆ‰ÈÎÔ› ˘ÂÚ‡ıÚˆÓ
1. ΔÚfiÔ˜ Û‡Ó‰ÂÛ˘
™˘Ó‰¤ÛÙ ÙÔ ÂÓÛ‡ÚÌ·ÙÔ ÙËϯÂÈÚÈÛÙ‹ÚÈfi Û·˜ ÛÙËÓ ˘Ô‰Ô¯‹ ÙËϯÂÈÚÈÛÙËÚ›Ô˘ Ù˘ ÙËÏÂfiÚ·Û˘.
■
2. Kˆ‰ÈÎÔ› ˘ÂÚ‡ıÚˆÓ ÙËϯÂÈÚÈÛÙËÚ›Ô˘
™‹Ì· ÂÍfi‰Ô˘ Î˘Ì·ÙÔÌÔÚÊ‹˜
■
ªÔÓÔ·ÏÌÈÎfi, Ú˘ıÌÈṲ̂ÓÔ Ì ۋ̷ 37,917KHz ÛÙ· 455KHz
G ¢È·ÌfiÚʈÛË ·Î¤ÙÔ˘
ñ 1Ô ·Î¤ÙÔ
∫ˆ‰ÈÎfi˜
∫·ÙÒÙÂÚÔ˜
Ô‰‹ÁËÛ˘
ÚÔÛ·ÚÌÔṲ̂ÓÔ˜ Έ‰ÈÎfi˜
C0
C1 C2 C3 C4 C5 C6 C7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
ñ ¶·Î¤ÙÔ Â·Ó¿Ï˄˘
G ∫ˆ‰ÈÎfi˜ Ô‰‹ÁËÛ˘
G ∫ˆ‰ÈÎfi˜ ·ӿÏ˄˘
G ¶ÂÚÈÁÚ·Ê‹ bit
ñ
Bit "0"
G ªÂÛԉȿÛÙËÌ· ·Î¤ÙˆÓ : Tf
∏ Î˘Ì·ÙÔÌÔÚÊ‹ ÌÂÙ·‚È‚¿˙ÂÙ·È ÁÈ· fiÛÔ ¯ÚfiÓÔ Â›Ó·È ÈÂṲ̂ÓÔ ¤Ó· Ï‹ÎÙÚÔ.
168
Tc
T1
∞ÓÒÙÂÚÔ˜
ÚÔÛ·ÚÌÔṲ̂ÓÔ˜ Έ‰ÈÎfi˜
∫ˆ‰ÈÎfi˜
·ӿÏ˄˘
9 ms
9 ms
2.25 ms
ñ
Bit "1"
0.56 ms
1.12 ms
Tf
Tf=108ms @455KHz
™˘¯ÓfiÙË· ÊÔÚ¤·
FCAR = 1/Tc = fOSC/12
™˘vÙÂÏÂÛÙ˘ ·ÙÙfi‰ÔÛ˘
∫ˆ‰ÈÎfi˜ ‰Â‰Ô̤ӈÓ
T
f
4.5 ms
0.55 ms
0.56 ms
2.24 ms
Tf
= T1/Tc = 1/3
∫ˆ‰ÈÎfi˜ ‰Â‰Ô̤ӈÓ
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