翻訳と辞書 Words near each other ・ ITU Triathlon World Cup ・ ITU TRIGA Mark-II Training and Research Reactor ・ ITU Turkish Music State Conservatory ・ ITU TV ・ ITU V.23 ・ ITU V.70 ・ ITU World Triathlon Series ・ ITU Youth Forum ・ Itu'muta ・ Itu'ti'u ・ Itu, Nigeria ・ Itu, São Paulo ・ ITU-D ・ ITU-R ・ ITU-R 468 noise weighting ・ ITU-R BT.656 ・ ITU-R P.525 ・ ITU-T ・ ITU-T Y.1564 ・ Ituango ・ Ituango Dam ・ Ituano FC ・ Ituata District ・ Ituaçu ・ Itubaína ・ Ituberá ・ Itubu Imbem ・ Itubwa Amram ・ ITUC-Asia Pacific ・ Itucumã River Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク ITU-R BT.656 ： ウィキペディア英語版 ITU-R BT.656 ITU-R Recommendation BT.656, sometimes also called ITU656, describes a simple digital video protocol for streaming uncompressed PAL or NTSC Standard Definition TV (525 or 625 lines) signals. The protocol builds upon the 4:2:2 digital video encoding parameters defined in ITU-R Recommendation BT.601, which provides interlaced video data, streaming each field separately, and uses the YCbCr color space and a 13.5 MHz sampling frequency for pixels. The standard can be implemented to transmit either 8-bit values (the standard in consumer electronics) or 10-bit values (sometimes used in studio environments). Both a parallel and a serial transmission format are defined. For the parallel format, a 25-pin Sub-D connector pinout and ECL logic levels are defined. The serial format can be transmitted over 75-ohm coaxial cable with BNC connectors, but there is also a fibre-optical version defined. The parallel version of the ITU-R BT.656 protocol is also used in many TV sets between chips using CMOS logic levels. Typical applications include the interface between a PAL/NTSC decoder chip and a DAC integrated circuit for driving a CRT in a TV set. == Data format == A BT.656 data stream is a sequence of 8-bit or 10-bit words, transmitted at a rate of 27 Mword/s. Horizontal scan lines of video pixel data are delimited in the stream by 4-byte long SAV (Start of Active Video) and EAV (End of Active Video) code sequences. SAV codes also contain status bits indicating line position in a video field or frame. Line position in a full frame can be determined by tracking SAV status bits, allowing receivers to 'synchronize' with an incoming stream. Individual pixels in a line are coded in YCbCr format. After an SAV code (4 bytes) is sent, the first 8 bits of Cb (chroma U) data are sent then 8 bits of Y (luma), followed by 8 bits of Cr (chroma V) for the next pixel and then 8 bits of Y. To reconstruct full resolution Y,Cb, Cr pixel values, chroma upsampling must be used. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ITU-R BT.656」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.