| 释义 |
letterbox
let·ter·box L0131200 (lĕt′ər-bŏks′)n.1. See mailbox.2. A format for presenting movies on television that maintains the rectangular theater image on a television screen by reducing the overall image until the full width can be seen, resulting in blank space above and below the image.tr.v. let·ter·box·es, let·ter·box·ing, let·ter·boxed To produce or present (film) in a letterbox format.letterbox (ˈlɛtəˌbɒks) n1. a. a slot, usually covered with a hinged flap, through which letters, etc, are delivered to a buildingb. a private box into which letters, etc, are delivered2. Also called: postbox a public box into which letters, etc, are put for collection and deliveryTranslationsletter (ˈletə) noun1. a mark expressing a sound. the letters of the alphabet. 字母 字母2. a written message, especially sent by post in an envelope. She slowly took the letter from its envelope; Did you post my letter? 信 信ˈlettering noun1. the way in which letters are formed. the art of lettering. 刻字, 寫字, 印字 写字，印字 2. letters which have been drawn, painted etc. He repainted the lettering over the shop door. 雕刻字，手寫字，印刷字 印刷或手写的字体ˈletterbox noun1. a slit in a door (sometimes with a box behind it) through which mail from the post is put. He put the card through the letterbox. 信箱 信箱2. a postbox. 郵箱 邮筒ˈletterhead noun the name and address of a company, a person etc printed at the top of a piece of writing paper. 信頭 印有抬头的信笺to the letter precisely; according to every detail. He followed his father's instructions to the letter. 精確地, 鉅細靡遺地 不折不扣地执行，一丝不苟地 letterbox
letterboxThe visual effect of black bars on the top and bottom of the screen when a movie with a wide aspect ratio is displayed on a TV that is not as wide. The black bars compensate for the reduced vertical height of the movie frames. This was a common experience on earlier TV sets if the movie was not reformatted for TV viewing (see pan & scan). The term "letterbox" was coined because the wide frame resembles the size of a letter envelope. See pillarbox, aspect ratio and anamorphic DVD.
 | | Standard vs. Wide Screen TV |
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| When a wide screen movie played on an earlier TV (left), the image was reduced vertically, producing the letterbox effect. (Image courtesy of Intergraph Computer Systems.) |
 | | Still Present on Modern TVs |
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| Many major motion pictures are shot in full panoramic format with aspect ratios that are still much wider than today's 16:9 wide screen TVs. As a result, the letterbox black bars are still common. |
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