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Technology in Action

Technology in Action. Chapter 8 Digital Lifestyle: Managing Digital Data and Devices. Chapter Topics . Changes that have brought a digital lifestyle The impact of a digital lifestyle Cell phones and smartphones Voice over Internet Protocol Digital media versus analog media

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Technology in Action

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  1. Technology in Action Chapter 8 Digital Lifestyle: Managing Digital Data and Devices

  2. Chapter Topics • Changes that have brought a digital lifestyle • The impact of a digital lifestyle • Cell phones and smartphones • Voice over Internet Protocol • Digital media versus analog media • Portable media players • How to create and watch digital video • Ubiquitous computing

  3. Sounds and images reproduce perfectly Easy distribution Small devices can hold huge collections of media Easy access to digital information Digital Lifestyle: What Are the Advantages of a Digital Format?

  4. Cellular Phones and Smartphones • Features include • Auto-redial • Voice mail • Voice-activated dialing • Internet access • Text messaging • Personal information management (PIM) • The most full-featured cell phones are categorized as smartphones

  5. How Cell/Smartphones Work • Analog-to-digital converter chip converts voice sound waves into digital signals. • Digital signal processor compresses the signal so it can be sent to another phone. • Digital data is transmitted as radio waves. • Digital signal processor decompresses incoming calls.

  6. How Cell/Smartphones Work • Base transceiver station • Picks up the request for service • Mobile switching center • Monitors the strength of the signal • When signal is weak, orders the next base station to take charge of your call.

  7. Cell/Smartphone Hardware • Processor (CPU) • Coordinates sending data between components • Runs the operating system • Popular processors include • Samsung SC • Texas Instruments OMAP • Marvell Xscale

  8. Cell/Smartphone Operating Systems • Translate the user’s commands into instructions for the processor • Symbian • Windows Mobile • OS X • OpenMoko • A free open-source mobile operating system

  9. Cell/Smartphone Memory and Storage • ROM stores the operating system and the basic programs. • Separate internal memory chips store additional applications and data. • Flash cards are used for additional storage.

  10. Cell/Smartphone Hardware • Input devices • Microphone • Keypad • Graffiti pad • Touch screen • Digital camera • Output devices • Speaker • LCD display

  11. Standard software To-do list Contacts manager Calendar Additional software Microsoft Word, Excel, Outlook, and PowerPoint Games Tools References Cell/Smartphone Software

  12. Cell/Smartphone File Transfer and Synchronization • Cell/smartphone files can be transferred to a desktop • Flash card readers • Cradles • Synchronizing updates files on the cell/smartphone and desktop • Sync cables • Windows Sync Center • Wireless transfers • IrDA • Bluetooth

  13. Cell/Smartphone Text Messaging • Text messaging • Short Message Service (SMS) • Sends messages of up to 160 characters • Multimedia Message Service (MMS) • Sends text, sound, images, and video clips

  14. Cell/Smartphone Internet Connectivity • Wireless Internet service provider • Internet connectivity plans, usually known as data plans • Microbrowser software • Pages are written in Wireless Markup Language (WML)

  15. Cell/Smartphone Internet Connectivity • 3G and Enhanced Data Rate for Global Evolution (EDGE) • Allow connectivity speeds of up to 1.7 Mbps • Conditions must be ideal to get this transfer rate • More reliable and less susceptible to interference than WiFi • 4G networks are beginning to be tested. • Connection speeds of up to 50 Mbps

  16. Voice Over Internet Protocol (VoIP) • A standard Internet connection can be used to make a phone call • Basic requirements for VoIP include: • Speakers • Microphone • Internet connection • VoIP provider • Allows free or low cost long distance

  17. Cell/Smartphone Security • Viruses can target cell phones. • Antivirus software for mobile devices • Symantec • McAfee • F-Secure • Keep your cell/smartphone number private • Use a virtual phone number

  18. Portable Media Players (PMPs) • Small devices that store and play music • Many also handle video and still images • Many formats for storing files • MP3, AAC, and WMA for music • DivX, MPEG-4, WMVand XviD for video • How much music/video can bestored depends on the PMP’sstorage space

  19. Other Choices for Portable Media Management • Some digital camera models • Sony Playstation Portable • Global positioning systems (GPS)

  20. PMP Flash Memory • Flash cards can add memory to portable media players • Nonvolatile • Noiseless • Use very little power • Hold between 64 MB and 4 GB of data

  21. Legal Music Downloads • Tethered downloads • You pay for the music and you own it • You are subjected to restrictions on its use • DRM-free downloads • No digital rights management on the files • Song files can be moved from system to system and shared among users

  22. Legal Music Downloads • Subscription services • Unlimited downloads to your PMP • Songs usable only as long as you pay your monthly subscription fee

  23. Podcasting • Competes with radio and television • Podcasts can be information, radio or TV shows, books on tape, audio plays, etc. • People can listen when they wish. • Can use podcasting software to automatically transfer new content.

  24. Digital Photography • Does not use film • See your images instantly • Better than cell phone cameras • Digital cameras have a higher image resolution • Most common file format is JPEG

  25. Digital video can be captured using Digital video cameras Cell/smartphones Webcams Digital video software allows you to Edit digital video Review clips frame by frame Reorder segments Correct color, balance, brightness, or contrast Digital Video

  26. Digital Video Files • Common file formats • QuickTime • MPEG • RealMedia • AVI • Consider codecs when choosing file formats • Rules that squeeze audio and video information into less space

  27. Transfer your video from digital device to computer USB Special sync cable Special devices can transfer video directly to YouTube Choose method of distribution YouTube -- Webcast DVD Getting Your Video Out to Viewers

  28. Access to Digital Assets • Netbooks • Run fully featured OSs • Weigh less than two pounds • Internet tablets • Lightweight, very portable • No keyboard • Notebook computers • All capabilities of a desktop • May weigh more than other two

  29. Other Devices to Consider • Sony PlayStation Portable • Internet access • Stores data files, videos, music, and images • Amazon Kindle • Stores up to 3,500 e-books Amazon Kindle

  30. Ubiquitous Computing • Computing that is inseparable from our everyday lifestyle

  31. The End

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