A few short years ago, the applications for video were somewhat confined—analog was used for broadcast and cable television, VCRs, set-top boxes, televisions and camcorders. Since then, there has been a tremendous and rapid conversion to digital video, mostly based on the MPEG-2 video compression standard. Today, in addition to the legacy DV, MPEG-1 and MPEG-2 audio and video com- pression standards, there are three new high- performance video compression standards. These new video codecs offer much higher video compression for a given level of video quality.
標簽： applications for confined somewhat
上傳時間： 2016-10-29
上傳用戶：bjgaofei
AES, 即Advanced Encryption Standard高級加密標準模塊, 它是目前國際上最先進的加密技術, 是基于DES之后的最新發布的高段加密標準. 該標準由美國NIST(National Institute of standards and Technology)組織制定發布.
標簽： Encryption Advanced Standard Nation
上傳時間： 2013-12-21
上傳用戶：wcl168881111111
Boost provides free peer-reviewed portable C++ source libraries. We emphasize libraries that work well with the C++ Standard Library. Boost libraries are intended to be widely useful, and usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. We aim to establish "existing practice" and provide reference implementations so that Boost libraries are suitable for eventual standardization. Ten Boost libraries are already included in the C++ standards Committee s Library Technical Report (TR1) as a step toward becoming part of a future C++ Standard. More Boost libraries are proposed for the upcoming TR2. Boost works on almost any modern operating system, including UNIX and Windows variants. Follow the Getting Started Guide to download and install Boost. Popular Linux and Unix distributions such as Fedora, Debian, and NetBSD include pre-built Boost packages. Boost may also already be available on your organization s internal web server.
標簽： libraries peer-reviewed emphasize provides
上傳時間： 2016-12-05
上傳用戶：semi1981
linux 下的aodv實現源代碼，由National Institute of standards and Technology開發
上傳時間： 2016-12-13
上傳用戶：kernaling
H.264/AVC, the result of the collaboration between the ISO/IEC Moving Picture Experts Group and the ITU-T Video Coding Experts Group, is the latest standard for video coding. The goals of this standardization effort were enhanced compression efficiency, network friendly video representation for interactive (video telephony) and non-interactive applications (broadcast, streaming, storage, video on demand). H.264/AVC provides gains in compression efficiency of up to 50％ over a wide range of bit rates and video resolutions compared to previous standards. Compared to previous standards, the decoder complexity is about four times that of MPEG-2 and two times that of MPEG-4 Visual Simple Profile. This paper provides an overview of the new tools, features and complexity of H.264/AVC.
標簽： the collaboration between Experts
上傳時間： 2013-12-30
上傳用戶：dongbaobao
The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486 features a common driver enable control the SP487 provides independent driver enable controls for each pair of drivers. Both feature tri–state outputs and wide common–mode input range. Both are available in 16–pin plastic DIP and SOIC packages.
標簽： differential and standard drivers
上傳時間： 2014-01-13
上傳用戶：tianyi223
Fortran has always been the principal language used in the fields of scientific, numerical, and engineering programming, and a series of revisions to the standard defining successive versions of the language has progressively enhanced its power and kept it competitive with several generations of rivals. Beginning in 1978, the technical committee responsible for the development of Fortran standards, X3J3 (now called J3), laboured to produce a new, much- needed modern version of the language, Fortran 90. Its purpose is to "promote portability, reliability, maintainability, and efficient execution... on a variety of computing systems". The standard was published in 1991, and work began in 1993 on a minor revision, known informally as Fortran 95. Now this revised
標簽： scientific the principal numerical
上傳時間： 2017-04-12
上傳用戶：a3318966
While faster processors, larger memory, and powerful graphics are fundamental requirements for workstations, users are also demanding a low-cost, solution-based approach wrapped around a standards-based technology. The Sun UltraTM 20 Workstation, which leverages the AMD OpteronTM processor with Direct Connect Architecture based on AMD64 technology, provides multiple operating system choices and leading nVidia graphics, delivers a platform that offers flexibility and performance in a cost-effective package with solutions to benefit customers across the board.
標簽： requirements fundamental processors graphics
上傳時間： 2017-08-17
上傳用戶：zhaiye
Ｃ語言是在 70 年代初問世的。一九七八年由美國電話電報公司(AT&T)貝爾實驗室正 式 發 表 了 Ｃ 語 言 。 同 時 由 B.W.Kernighan 和 D.M.Ritchit 合 著 了 著 名 的 “THE C PROGRAMMING LANGUAGE” 一書。 通常簡稱為《 K&R》， 也有人稱之為《 K&R》 標準。 但是， 在 《 K&R》中并沒有定義一個完整的標準 C 語言， 后來由美國國家標準協會 （ American National standards Institute） 在此基礎上制定了一個 C 語言標準， 于一九八三年發表。 通常 稱之為 ANSI C。
上傳時間： 2016-08-03
上傳用戶：vito
The CommScope InstaPATCH? 360 and ReadyPATCH? solutions utilize a standards-compliant multi-fiber connector to provide high density termination capability. The connector is called an MPO (Multi-fiber Push On) connector by the standards. In many cases, multi-fiber connector products are referred to as MTP connectors. This document is intended to clarify the difference between the two terms – MPO and MTP.
上傳時間： 2017-04-12
上傳用戶：asdfghjkl1234567890
