中国对“洋垃圾”说不美国：别禁废金属金属李干杰废碎料

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百度如果非要用最细微的体感触觉和听觉感受的话，在动态行驶时几乎很难感受到发动机介入瞬间的震颤。

????(??: television ???? TV ?? tele ?? telly, ???: ????)? ??? ? ????? ???? ??? ?? ?? ????. ?? ?? ??? ? ????? ???? ??? ??? ??? ??? ? ??. ???? ????? ???? ???, ???? ????, ???? ?? ?? ??? ?? ????.

????? ???? ??? ???? τ?λε(??)? ?? ?? ??? ??? visio(???)? ??? ???? ???.

????? 1930?? ??? ?? ???? ??, ??, ??????? ?? ??? ?????. 1970??? ?? ??? ????, ??????, VHS? ?? ?????? ?????, 1990?? ???? DVD? ??????, ?? ?? ??? ???? ?????? ??? ??? ???? ???.

?? ?? ???? (CCTV)? ?? ?? ??? ????? ???, ?? ???? ?? ??? ??? ??? ???? ????. ???? ??? ??? ??? ?? ???? ?????? ??? ?? ????. ???? ???? 54-890 MHz??.^[1] ???? ??? ???? ??? ?? ??? ?? ????? ???? ????. ?? ?? ???? ???? ???? ??? ?? ???, ??? ??? 2007??? ???? ???? ??? ???? ???? ??, ????? ??? 2012? 12? 31?? ??? ???? ???? ??? ???? ??? ???? ???? ???.

???? ???? ?? ?? ???? ???? ?? ??? ???? ?? ??? ??? ??? ? ??? ?? ??, ??? ??? ???? ????? ??? ???? ??. ???? ???? ???? ????? ??? ??? ????, LCD ??, LED ?? ??? ???. ??? ??? ??? ? ?? ????? ??? ????(??: Digital Television, DTV)?? ??, ??? ???? ?? ??? ??? ? ?? ?? ??? ????(??: high-definition television, HDTV)?? ??.

??

??? ????

??? ???

1873? ????? ?? ?? ???? ???(Willoughby Smith)? ??? ?? ??? ?????. 2??? 1875? ??? ?? ??? ?? ???? ??? ??? ?? ??? ???? ?????. ???? ??? ???? ??? ??? ??? ??? ? ?? ? ?? ??? ?? ??? ??? ??? ??? ???.^[2]

??? ??? ????? ?? ??? ?? ??? ??? ?? ??? ??? ????? ? ?? ??? ???. ??? ??? ??? ?? 1884? ??? ?? ??? ?? ???? ???(???: Paul Gottlieb Nipkow, 1860? 8? 22? ~ 1940? 8? 24?)??. ?? ??? ?? 24?? ??? ?? ??? ??? ?? ??? ???? ?? ????? ????? ???. ?? ???? ??? ????? ?? ?? ??? ??? ???? ??? ? ???. ??? ???? ???? ?? ?? ???? ??? ?? ???? ??? ? ???. ?? ??? ??? ?? ?? ????? ???? ?????? ?? ????? ???? ??? ???? ????? ?? ?????. ??? ?? ??? ????? ?? ?? ??? ? ??? ???. ???? ??? "?????"?? ???. 1926? ??? ??? ? ?? ???? ???? "?????"? ??? ??? ?????. ???? "?????"(??: televisor)? ?? ? ??? ??? ????? ??? ????? ???? ??? ?????? ???. 1929? BBC? ?? ??? ??? ????? ??? ??? ?????.^[3]

??? ????

????? ??, ???? ???? ???? ??.

1897? ?? ????? ???(???: Karl Ferdinand Braun, 1850? 6? 6? -1918? 4? 20?)? ????? ?????. ???? ???? ??? ? ??????? ?? ??? ????? ???? ?? ??? ?? ????? ??? ??? ????? ?? ??? ??? ?? ?? ???? ??? ?????.^[2] ?? LCD? LED? ??? ??? ????? ???? ???? ??? ??? ??? ?? ?? ???. ??? ????? ??? ??? ??? ????? ??? ?????? ???.

???? ??? ??

??? ???? ????

1939? ??	1980? - 1989?
1940? - 1949?	1990? - 1999?
1950? - 1959?	2000? ??
1960? - 1969?	???
1970? - 1979?	??? ??

?????? ?? 1900? 8? 25? ???? ?? ?????????? ???? ?????. ??? ??? ? ????? ??? ??? ??? 20???? ??? ? ??? ??.^[4] ? ?? ?? ???? ????? ????? ??? ????? ?? ?????. ??? ??? ?? ????(??: Philo Farnsworth, 1906? 8? 19? ~ 1971? 3? 11?)? ???? ?? ?? ??? ????? ???? ??? ????? ???? ?????, ?? ? ???? ?? ??? ???? 1927?? ???? ?????. ?? ??? 1? ?? ????? ??? 1928? 9? 3? 《?????? ??》? "SF?? ???? ??? ????"? ?????.^[5]

??? ?? ??? RCA? 1930? ????? ???? ??? ??? ????? K. ????(????: Владимир Козьмич Зворыкин, 1889? 7? 30? - 1982? 7? 29?)? ???? ????? ??? ???? ???. ????? ????? ????? ???? ??? ? ?? ????? ?? ??? ????? ?????. RCA? ???? ??? ???? ???? ????? ??? ??? ????. RCA? 1939? 4? ??? ??????? ???? ???? ??? ?????? ???? ???? ??? ?????? 1939? 10? ????? ???? ???? ???? ?????. ??? ??? ?? ???? ????? ?? ? ??? ?? ????. ??? ??? ??? ?2? ?????? ??? ???? ??? ??? ???. ??? ????? ??? ???? ????. ?? ?? RCA? ?? ???? ??? 80%? ???? ??? ??? ??? ???? ????? ????? ?????. ????? 1957? CBS? ???? ???? ?? ????? ????? ?? ?? ???? ???.^[5] 1999? ???? "20??? ?? ??? 100?"? ? ??? ????? ???.^[6]

??, ??? ??? ??? ?? ????? ?? ?? ???? ??? 1935?? ???? ???? ???? ??? ???? 1936? ??? ???? ?????.^[4]

?? ????? ??

?? ???? ?? ?? ?? ??

?? ???? ??? ?? ??? ???? ???? ?????. ? ?? ???? 1928? 7? 3? ???? ??? ? ?? ??? ???? ???? ?? ??? ???? ??? ???? ??? ?????^[7], 1938? 2? ??? ???? ???? 210?? ???? ? ??? ?? ???? ??? ?????.^[8]

??? ???? ??? ??? ?? ???? ??? ?2? ?? ?? ?? ??? ?? ?? ????? ?????. 1950? 1? 12? ???? ?? ???? ??? D.C.?? 8?? ???? ?? ?? ???? ??? ?? ?????.^[9] ? ?? ??? ? ?? ?? ????? ???? ?? ? 2? 13??? 21??? ?????.^[10] ????? 1950? 11? 14? ???? ?? ???? ?? ??? ?? ???? ???? ???? ??? ?????^[11]^[12], ?????? ??? 1? 10??? ??? ?????.^[13]

1953? RCA? ?? ??????? ????? ?? ???? ?? ??? NTSC(??: National Television Systems Committee, ?? ???? ??? ???) ??? ?????. ??, ????? 1956? ???? SECAM(????: Sequentiel Couleur Memoire) ??? ?? ???? ?? ???? ???, ??? 1962? PAL(??: Phase Alternating Line)? ?? ???? ?? ???? ???. ?? ???? ?? ???? ??? ? ? ?? ??? ? ??? ???? ??.^[14]

???? TV

??? ?? ??? ?? TV? 1980???? ???? ???? ????.

??? ??? ? ??? ????? ?? TV? ?????, ????????? ???, ??, ???, ??, ???, ??? ?? ????, ??, ??, ?? ?? ????, ??, ???? ??, ?, ???, ?? ??? ?? ?? ?? ???? ?????? ?? ??? ???? ?????? ???? ????.

?? TV ?? ??? ?? ??????, LD(??????) ?? ???? TV? ?? ?? ????.

???? TV? ?????? ??? ? ??, ???? ?? ????? VCR ????? ??? ???? TV? ??? ???? TV ??? ?? ?? ? 4?? ??? ??? ?? ??(LCD)??? ?? ?? ??? ????.

??? ?? ? ????? ??? '????'(?????) ? ?? ?? ?? ??? ?? ??? ??, ??? ???? ???? ??? ???? ???.

??? ????

??? ???? ?? ?? ?? ??

??? ????? ???? ??? ???? ???? ???? ???? ????.^[15] ??? ???? ???? ???? ???? ??? ?? ??? ??? ??? ??? ???? ??? ??? ??? ? ?? ???? ??? ?? ??? ????.^[16]

??? ????? ?? ???? ??? ???? ????? ??? ??, ???, ?? ??? ???? ??? ??.

??? ????? ???? ????? ??
??	???? ????	??? ????
??	???? ????	SDTV	HDTV
????	4:3	4:3(16:9)	16:9
???	525/625	704(640) X 480	1920 X 1080 1280 X 720
????	2CH(????)	5.1CH	5.1CH
?? ???	??, ???? ?	?? ???? ??, ??? ?? ?
??: ???? TV? ??? TV ????^{[?? ??(?? ?? ??)]},????, LG??

??? ????? ????? ??? ????, ??????? ???? ??? DVB ??, ???? ???? ????? ???? ??? ATSC ??, ???? ???? ??, ???, ???? ??? ISDB??, ??? ??? ??? ??? DTMB ??? ??.^[17]

ATSC ??? ????? ??(VSB, Vestigial Sideband) ??^{[?? 1]}? ????? ??? ???? ?? ????, 2009? ??? ??? ????? ?? ??? ?????. ?? ?? DVB ??? ?? ??? ?? ??? ?? ??? ?? ???(OFDM, Orthogonal Frequency Division Multiplexing) ??^{[?? 2]}? ???? ?? ??.^[18]

?? ???? ??? ????? ??? ??? ?? ??? ?? ?? ???? ???? ??? ????? ???? ??. 2008? ????? ??? ??? ??? ??? ??? ????? ??? ??? ?? ??? ???? ? ??? ?? ?? ??? ?? ??? ????? ??? ? ??.^[19]

???

?? LED TV

???? ???? ???? ???? ???? ??? ?? ???? ????, LCD ????, LED ???? ??? ???.

????

???? ????? ????? ???? ??, ?? ? ??, ???? ????.^[20] ???? ??, ???, ??????, ?? ? ????.

??? ??

??? ???? ????? ???? ?? ???? ?? ????. ???? ?? ?????? ???? ?? ??? ?? (Coversion)? ? ???? ???? ??(Amplifying)??, ???? ?? ??(Sending)?? ??. ??? ??? ???? ???? ?? ??(Recieving)??.

?? ??

??

↑ VSB Vestigial Sideband ?? ???, ktworld ???????? ??
↑ OFDM, Orthogonal Frequency Division Multiplexing, ktworld ???????? ??

??

↑ Television Frequency Table, CSGNetwork.com., a Division of Computer Support Group.
↑ ^? ^? ????? ???? ??? 2025-08-06 - ??? ??, teletronic.co.uk, 2009-8-1 ???
↑ ???, ??? ???? ???, ??, 2007??
↑ ^? ^? ???, ??? ?? ?? 1. ???, ??????,2006, 29?
↑ ^? ^? ???, ??? ??????, ?????, 2006, 271-282?
↑ ?? ????, ?? ????, 20?? ?? ??? 100?, ?? ? ?? ?? ??? 2025-08-06 - ??? ??, ???, 1999? 3? 29?, 2009-8-1 ???
↑ John Logie Baird, Television Apparatus and the Like ??? 2025-08-06 - ??? ??, U.S. patent, filed in U.K. in 1928.
↑ Baird Television: Crystal Palace Television Studios. Previous color television demonstrations in the U.K. and U.S. had been via closed circuit.
↑ "Washington Chosen for First Color Showing; From Ages 4 to 90, Audience Amazed", The Washington Post, Jan. 13, 1950, p. B2.
↑ "Color TV Tests To Be Resumed In Washington", The Washington Post, February 12, 1950, p. M5.
↑ "CBS Color Television To Make Public Debut In N.Y. Next Week", The Wall Street Journal, November 9, 1950, p. 18.
↑ CBS Announces Color Television ??? 2025-08-06 - ??? ??(advertisement), New York Daily News, November 13, 1950, p. .
↑ "CBS to Display Color Video in City Next Week", Chicago Tribune, Jan. 6, 1951, television and radio section, p. C4.
↑ ????? ?? ??? 2025-08-06 - ??? ??, ????????? ??
↑ What is DTV? ??? 2025-08-06 - ??? ??, DTV.gov
↑ Buy A Converter Box ??? 2025-08-06 - ??? ??, DTV.gov
↑ ATSC, DMB-T/H, DVB-T/DVB-T2 and ISDB-T^{[?? ??(?? ?? ??)]} dtvstatus.net
↑ ??? DTV ??? ??^{[?? ??(?? ?? ??)]}, ?????????
↑ KADO ISSUE REPORT ?? 52?(Vol.5 No.3), ???, ????? ??? ?? ?????? ??, ?????????
↑ ???, ???? ??? ??, ????????, 2007?, ISBN 89-8499-809-5

?? ??

????? ??? ???? ??? ??? ??? ??? ????.

?????? ? ???
??? ??? ????.

????

A History of Television (??), ??? ???? ???
(??????) ????

[18] VSB Vestigial Sideband ?? ???, ktworld ???????? ??

[19] OFDM, Orthogonal Frequency Division Multiplexing, ktworld ???????? ??

[1] Television Frequency Table, CSGNetwork.com., a Division of Computer Support Group.

[teletronic-2] ? ^? ????? ???? ??? 2025-08-06 - ??? ??, teletronic.co.uk, 2009-8-1 ???

[3] ???, ??? ???? ???, ??, 2007??

[kang-4] ? ^? ???, ??? ?? ?? 1. ???, ??????,2006, 29?

[song-5] ? ^? ???, ??? ??????, ?????, 2006, 271-282?

[6] ?? ????, ?? ????, 20?? ?? ??? 100?, ?? ? ?? ?? ??? 2025-08-06 - ??? ??, ???, 1999? 3? 29?, 2009-8-1 ???

[7] John Logie Baird, Television Apparatus and the Like ??? 2025-08-06 - ??? ??, U.S. patent, filed in U.K. in 1928.

[8] Baird Television: Crystal Palace Television Studios. Previous color television demonstrations in the U.K. and U.S. had been via closed circuit.

[9] "Washington Chosen for First Color Showing; From Ages 4 to 90, Audience Amazed", The Washington Post, Jan. 13, 1950, p. B2.

[10] "Color TV Tests To Be Resumed In Washington", The Washington Post, February 12, 1950, p. M5.

[11] "CBS Color Television To Make Public Debut In N.Y. Next Week", The Wall Street Journal, November 9, 1950, p. 18.

[12] CBS Announces Color Television ??? 2025-08-06 - ??? ??(advertisement), New York Daily News, November 13, 1950, p. .

[13] "CBS to Display Color Video in City Next Week", Chicago Tribune, Jan. 6, 1951, television and radio section, p. C4.

[14] ????? ?? ??? 2025-08-06 - ??? ??, ????????? ??

[15] What is DTV? ??? 2025-08-06 - ??? ??, DTV.gov

[16] Buy A Converter Box ??? 2025-08-06 - ??? ??, DTV.gov

[17] ATSC, DMB-T/H, DVB-T/DVB-T2 and ISDB-T^{[?? ??(?? ?? ??)]} dtvstatus.net

[20] ??? DTV ??? ??^{[?? ??(?? ?? ??)]}, ?????????

[21] KADO ISSUE REPORT ?? 52?(Vol.5 No.3), ???, ????? ??? ?? ?????? ??, ?????????

[22] ???, ???? ??? ??, ????????, 2007?, ISBN 89-8499-809-5

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中国对“洋垃圾”说不 美国：别禁废金属金属李干杰废碎料

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中国对“洋垃圾”说不美国：别禁废金属金属李干杰废碎料