CPT ch8 TECH
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the use of a single device to handle media, internet, entertainment, and telephony needs; ex.evolution of smart phones, migration of digital devices into environments like the cabin of cars
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digital convergence
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an organization working to standardize different kinds of appliances and network devices used in our homes
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DLNA (digital living network alliance)
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the use of equipment to provide voice communications over a distance; has shifted from analog science to a digital one
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telephony
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all phones that use mobile, cellular technology
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cellular
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inexpensive phones with modest processors, simpler interfaces, and often no touch screen
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feature
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a large communications tower with antennas, amplifiers, receivers, and transmitters where each geographic cell area is centered
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base transceiver station
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when you place a call on a cell phone, the base station picks up the request for service and it is then passed through a central location called a ____ ____ _____
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mobile switching center
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what converts the sound waves from when you speak into a cell phone into digital signals
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analog to digital converter chip
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what in the cell phone compresses the digital sound signals so it will transmit more quickly and handles the compression work
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digital signal processor
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the process of updating your data so your to do lists, schedules and other files on your cell phone and computer are the same
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synching
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synching; transferring information between phone and computer using a micro SD card or USB cable
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wired
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symching; transferring information between phone and computer using a wireless connection
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wireless
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type of chips that transfer data wirelessly to other enabled devices using radio waves to transmit the signals
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bluetooth
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a technology that lets you send short text messages over cellular networks
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SMS (short message service)
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an extension of SMS that lets you send messages that include text, sound, and video clips to other phones or email addresses
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MMS (multimedia message service)
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what connects your smartphone to the internet
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wireless ISP
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an internet connectivity plan or text message plan is usually known as a...
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data plan
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cellular data transfer standards; transfer rates as high as 3.8 Mbps, more reliable than WiFi and is less susceptible to interference, blankets most major urban areas with connectivity
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3G
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cellular data transfer standards; provides connection speeds of up to 100 Mbps
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4G
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an approach to connect to the internet - as long as you have 3g/4g signal, your coputer can access the internet even when it tells you there are no available wireless networks by connecting a phone through bluetooth and then provide internet access through the network
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tethering
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a form of voice based internet communication that turns a standard internet connection into a means to place phone calls, including long distance calls; uses technology similar to that used in email to send your voice data digitally over the internet
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VoIP (voice over IP)
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a network of 21 satellites that constantly orbits the earth; devices use an antenna to pick up signals from the satellites and use the software to transform signals into latitude and longitude to determine geographical location to within 3 ft
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GPS (global positioning system)
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what is the main difference between a tablet and a smartphone
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screen size
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tablets, netbooks, ultrabooks; traditional OS, keyboard, 2 lbs or less, inexpensive in comparison
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netbooks
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tablets, netbooks, ultrabooks; full featured computers, think, no optical drives, offers SSD drives, under 3 lbs, full size keyboards
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ultrabooks
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type of waves that are digitized from sound and light waves that illustrate the loudness of a sound or the brightness of the colors in an image
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analog
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textual information caputred digitally so that it can be stored, manipulated, and transmitted by electronic devices (E-readers)
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etext (electronic text)
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technologies for representing digital text that is a very crisp, sharp grayscale representation of text where the devices reflect the light that shines on the page and are not backlit; easier to read in sunlight
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E ink (electronic ink)
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technologies for representing digital text that is the high resolution backlit monitor where the glass does reflect glare which makes it hard to use in sunlight
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backlit
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the number of times the analog wave is measured each second; the higher it is the more accurately the original wave can be recreated
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sampling rate
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a system of access control that allows only limited use of material thats been legally purchased; song that con only run on certain devices or movie that can only be viewed a certain number of times
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DRM (digital rights management)
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cameras; the electronic sensors in digital cameras that capture the images which arrays and then converts them to digital data
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CCD (charge coupled device)
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cameras; the number of data points it records for each image captured; measured in megapixels (MP)
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resolution
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cameras; files have different formats and extensions depending on the manufacturer. these file records all of the original image information, therefore larger
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RAW
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cameras; files can be compressed a bit, keeping most of the details, or compressed a great deal, losing some detail; can select from a few different compression levels
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JPEG
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scanners; software that converts pages of handwritten or typed text into electronic files, you can open and edit these documents with word processing programs
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OCR (optical character recognition)
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digital video; a rule that squeezes the same audio and video information into less space
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codec
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a standard of digital tv signal that guarantees a specific level of resolution and a specific aspect ration
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HD (high definition)
