to handle MP3 and WMA audio, MPEG-4 within the home), new consumer products (such as video (for DivX Video), JPEG images, and SO on. Special portable video players and mobile video/cell phones), playback modes such as slow/fast forward/reverse at and more cable/satellite channels. various speeds are also expected. Support for DVD Audio and SACD is also popular. Application block diagrams A recent enhancement to DVD players is the ability to connect to a home network for playing content (music, video, pictures, etc.) residing on the PC. These Looking at a few simplified block diagrams helps envision "networked DVD players" may also include the ability to how video flows through its various operations. play movies from the Internet and download content CLOSED CAPTIONING, TELETEXT, WIDESCREEN VBI DATA SCALING BRIGHTNESS NTSC / PAL, S-VIDEO VIDEO CONTRAST GRAPHICS NTSC/ PAL GB/YPBPR DECOMPRESS OVERLAY VIDEO ENCODE SATURATION ETHERNET DEMUX SHARPNESS NETWORK STEREO AUDIO AUDIO L AUDIO R AUDIO DECOMPRESS DIGITAL AUDIO 5.1 DIGITAL AUDIO INTERFACE INPUT Figure 7.1-5 Simplified block diagram of a digital media adapter. Introduction to video CHAPTER 7.1 CLOSED CAPTIONING TELETEXT, WIDESCREEN VBI DATA SCALING BRIGHTNESS TSC/PAL, S-VIDEO VIDEO CONTRAST GRAPHICS NTSC / PAL CHANNEL RGB/YPBPR VIDEO DECOMPRESS OVERLAY VIDEO ENCODE DESCRAMBLE QAM/VSB SATURATION COFDM DEMOD SHARPNESS TUNER TRANSPORT INPUT AND FEC STREAM STEREO AUDIO AUDIO L DEMUX AUDIO R AUDIO DECOMPRESS DIGITAL AUDIO 5.1 DIGITAL AUDIO INTERFACE NTSC/PAL VIDEO DECODE NTSC PAL AUDIO DECODE INPUT Figure 7.1-6 Simplified block diagram of a digital television set-top box. onto an internal hard disc drive (HDD) for later viewing. Digital television set-top boxes Support for playing audio, video, and pictures from a variety of flash-memory cards is also growing. The digital television standards fall into seven major In an attempt to look different to quickly grab buyers' categories: attention, some DVD player manufacturers tweak the ATSC (Advanced Television Systems Com