Personal
Media Device
iPod Digital Media Players
Three models of Apple's popular iPod MP3
and digital media players, from left to right: iPod shuffle, iPod nano, and
iPod with video. The special-edition red iPod nano was issued as part of a
campaign to raise funds to fight AIDS in Africa.
Personal Media Device or Portable Media
Device, handheld electronic device that plays sound and video
recordings stored as digital multimedia files. Other functions and features
offered by personal media devices (PMDs) may include displaying and storing
photographs, access to over-the-air radio or television broadcasts, wireless
Internet (Wi-Fi) access, text messaging, e-books, electronic games, video and
audio recording capability, and cellular telephone access. Media files can be
downloaded from personal computers or other devices that have access to the
Internet or the ability to record digital media files. PMDs usually have a
built-in hard drive (microdrive) or solid-state flash memory. They can run on
batteries or be plugged into a power source.
Personal media devices have become
a growing segment of the home electronics market, particularly MP3 players. The
trend is for more types of portable electronic devices to have multimedia
features. Newer models of cell phones, portable game systems, and even digital
cameras also have media playback capabilities, as do some personal digital
assistants. The go-anywhere convenience and on-demand entertainment made
possible with these devices have made them a welcome addition to the lives of
many people.
II
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TYPES OF PERSONAL MEDIA PLAYERS
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A
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MP3 Players
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Microsoft's Zune Media Player
Microsoft introduced its Zune audio
player in 2006. In addition to playing MP3 audio recordings and radio
broadcasts, the device can display photos and videos. It also has a wireless
sharing feature so that users can send media to each other.
MP3 players are designed
primarily for listening to recorded music or audio material such as podcasts,
usually downloaded as files created or stored on a personal computer. Some
players can also show video on a display screen. They are lightweight devices
that can be held in a single hand. Many can be carried easily in a shirt pocket
or strapped to an arm. Earbuds or headphones allow for private listening. MP3 players
can also be plugged into speakers or other audio equipment for full sound
playback. Additional capabilities include off-air radio and viewing photographs
or lists of e-mail addresses or notes. Accessories such as microphones can
allow MP3 players to make voice recordings.
The development of the MP3
format allowed music to be recorded in compressed digital form, requiring much
less memory to store or bandwidth to download than a musical track from a CD in
regular uncompressed form. The first use of MP3 format was on personal
computers, allowing music and other audio files to be easily sent and
downloaded over the Internet. The invention of the portable MP3 player in 1998
meant large numbers of music tracks could be stored on a small, lightweight
device. MP3 players were much less bulky than portable cassette-tape players or
portable CD players and did not require transporting tapes or CDs. MP3 players
that used a small hard drive to store files could hold hundreds of hours of
music. Music was typically downloaded to the player using a personal computer.
Apple Inc. introduced the iPod
in 2001. The iPod had a hard drive and could hold thousands of songs or, in
later models, display thousands of digital photographs. A user accessed the
menu by touching parts of a click wheel rather than by using a keypad or
switches. The iPod’s capacity, convenience, and simple design made it a major
success with consumers. Later designs included a larger display screen to allow
video files to be viewed and more compact iPods (iPod shuffle and iPod nano)
that use flash memory instead of a hard drive. Microsoft introduced its own MP3
player called Zune in 2005.
B
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Portable Multimedia Players
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Portable Media Player
Many portable media players play the
forms of digital entertainment that can be stored on a personal computer,
including recorded television, movies, pictures, and music. This model used a
hard drive to store data and an LCD screen for display.
Portable multimedia players
(PMPs)—also called personal media players, portable video players, and video
jukeboxes—are primarily designed for viewing video. They typically have a
larger display screen than MP3 players and are held in two hands. Some models,
however, are the size of MP3 players and have smaller screens. PMPs use hard
drives or flash drives, and have LCD or OLED display screens. Features
available include playing recorded audio and video in a number of formats, game
playing, photo storage, e-book readers, off-air TV and radio broadcasts, Wi-Fi
Internet connection, and video and radio recording capabilities. The first PMP
was introduced in 2002 by the French company Archos.
C
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Multimedia Cell Phones
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Handheld mobile cellular
telephones have gained enormous popularity since their introduction in the
1980s. Models have become smaller and lighter as more features have been added.
Camera phones were introduced in the late 1990s, allowing users to take and
send photos and later video. Computer components such as hard drives or flash
drives have allowed cell phones to play and receive many types of multimedia,
and perform some computer functions.
Apple Inc. introduced the iPhone
in 2007 as a device that combined a mobile phone with the multimedia features
of an iPod and access to the Internet. Similar handheld, all-in-one electronic
devices that combine features of personal computers, media players, gaming
devices, and mobile phones are likely to become much more common in the future.
D
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Portable Gaming Devices
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Handheld, portable gaming
consoles are primarily designed for electronic games and can be interactive,
permitting multiple players to participate while linked through separate
devices. Gaming devices typically are held in two hands, with buttons or touch
keys on each side. With many models, the display screen allows additional
multimedia capabilities similar to PMPs, including wireless Internet access,
playing video, or viewing photographs. Sound and music come through built-in
speakers or can be listened to with earbuds or headphones.
Inexpensive handheld electronic
games were first developed in the late 1970s and remained popular into the
early 1990s. More sophisticated dedicated gaming devices were introduced in the
late 1980s. Combination devices that offer multimedia or Internet features
began to appear in the early 2000s. Such extras are now available on many
models and brands.
E
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Personal Digital Assistants
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Personal Digital Assistant
The personal digital assistant (PDA) is
a handheld computing device. Some models have multimedia playback capabilities,
including MP3 files and video.
Personal digital assistants
(PDAs) are handheld computers that were originally designed to help with such
tasks as taking notes, scheduling appointments, and sending faxes and
electronic mail. Many now have multimedia capabilities including radio, MP3,
and video/audio recording, as well as e-book display. Some PDAs also have a
global positioning system (GPS) link.
F
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Digital Cameras
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The large display screen on
some digital cameras can be used to watch movies and videos. Movies or video
can be downloaded from a personal computer to the cameras, which can also play
sound. Some digital cameras can also be plugged into television sets to show
movies, video, or photos stored on the camera.
III
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CONSUMER ISSUES
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A
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Copyright and Intellectual Property
Issues
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Consumers have welcomed the
ability to easily record, copy, and transfer digital multimedia files from a CD
or a DVD, or from the Internet, to a personal computer and then to an MP3
player or PMP for convenient listening or viewing. However, some forms of
copying are seen as piracy by the industries that claim legal and intellectual
property rights over such audio and video material. Sharing of MP3 music files
over the Internet in particular has led to attempts to prosecute and fine
people for illegal copying. The United States Supreme Court and Congress have
tried to define what constitutes fair use of copyrighted material. As the law
stands, an individual who buys a CD is allowed to copy the songs to their own
PC, convert the music to MP3 files, and download the files for private
listening on a personal MP3 player or other device. However, supplying copies
of the files to another person, even for free, is deemed illegal.
One solution to this problem
has been the creation of online services such as Apple’s iTunes, Microsoft’s
Zune Music Store, or AmazonMP3 that provide downloading of music files or other
copyrighted material over the Internet for a fee or on a subscription basis.
These purchased files may contain special coding called digital rights
management (DRM) protection to prevent additional copying, or that render the
files unplayable after a certain amount of time or on different kinds of
digital devices. Such DRM coding and software-hardware incompatibilities have
been controversial and unpopular with consumers. Some music download services
and recording companies have dropped the anticopying protection features, allowing
consumers to make a copy of the legally purchased music file to any device they
wish, and even to copy the file onto a recordable CD or DVD. DRM may be
retained for downloaded digital video files such as motion pictures, however.
B
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Environmental Concerns
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The convenience of personal
media devices has not come without a cost. The batteries for such devices can
only supply power for a limited time. The more complex the media or task, the
faster the batteries may run out. Batteries can be made rechargeable and some
designs that have solar panels to recharge batteries have been marketed.
Electronic devices as well as the batteries to power them often contain
substances such as heavy metals or toxic chemicals. Disposing of old electronics
and batteries has become a serious environmental issue. Some states such as
California and Washington require recycling of electronics rather than disposal
in landfill sites. Manufacturing such devices may also have potentially harmful
environmental effects.
C
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Health Concerns
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Some medical experts have
raised concerns about possible health effects associated with using some
personal media devices. The lightweight earbuds commonly used with MP3 players,
gaming devices, and other handheld electronics fit deep in the ear. Some
evidence indicates that loud volumes or listening for extended periods can
damage hearing. Other concerns have been raised about cell phones held next to
the head for long periods of time. Some studies suggest microwave energy
broadcast by a cell phone could affect brain cells and other tissues in the
head.
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