Device technology
Download
1 / 23

Device Technology - PowerPoint PPT Presentation


  • 360 Views
  • Updated On :

Device Technology Justin Champion Room C208 - Tel: 3273 www.staffs.ac.uk/personal/engineering_and_technology/jjc1 PCS – New Technology Contents Operators offering value added services Changing use of mobile devices Device Technology Mobile Applications PCS – New Technology

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Device Technology' - albert


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Device technology l.jpg

Device Technology

Justin Champion

Room C208 - Tel: 3273

www.staffs.ac.uk/personal/engineering_and_technology/jjc1


Pcs new technology l.jpg
PCS – New Technology

  • Contents

    • Operators offering value added services

    • Changing use of mobile devices

    • Device Technology

    • Mobile Applications


Pcs new technology3 l.jpg
PCS – New Technology

  • Operators recognised that data services could make them money

    • 02 worldwide got 17.3% of there income from data transfer

      (www.mmo2.com/docs/media/financial_performance_preliminary3.html, 2003)

      • Mostly from SMS usage, but this will change

      • E-commerce is the most likely reason for a change

        • Using a phone like a credit card

      • Possibly e-voting

        • (news.bbc.co.uk/1/hi/uk_politics/3300425.stm, 2003)

        • Elections could be help more regularly if it was cheaper and easier to hold them

  • To increase this the devices will have to become more capable


Pcs new technology4 l.jpg
PCS – New Technology

  • Changes will need to take place in

    • Displays

    • Processing

    • Operating Systems

    • Ability to receive data at the correct rate


Pcs new technology5 l.jpg
PCS – New Technology

  • Displays

    • The ultimate aim is to provide the information in a clear manner with the minimum of battery usage

      • With the increased use of photo quality images a full palette of colours must be capable of being displayed

      • The resolution must be suitable for close proximity usage

        • Most devices will be held in the hand when being used

      • A number of technologies have emerged as potential solutions


Pcs new technology6 l.jpg
PCS – New Technology

  • Displays Continued

    • Liquid Crystal Displays

      • Passive Matrix

      • Active Matrix Thin Film Transistor (TFT)

    • These displays are capable

      • Using low power

      • Displaying at least 64,000 colours

      • Refreshing at a rate for 15 frames a sec with MPEG

        • 25 is the standard frame rate

    • Future general public (In research use now)

      • ThinCRT

      • Light Emitting Polymers

        • Plastics which produce light when an electrical charge is put into them

        • Phillips should have released a version now!

        • Cambridge are carrying out research on this

          • (http://www.cdtltd.co.uk/, 2004)


Pcs new technology7 l.jpg
PCS – New Technology

  • Device Capabilities

    • Technology is moving away from a device that contains all that it needs to work

      • Now the user has a base set of functionality anything additional can then be transferred into the device

      • This allows the customisation of the device with only that which is required.

    • The first step to this is to create an Operating System (OS) that supports add-ons.

    • Each device will only have the functionality that it requires and this can change over time

    • A potential “All in one device” PDA, Phone, Fax machine, games, web surfing, etc.

      • These are here now and will be demonstrated during this course


Pcs new technology8 l.jpg
PCS – New Technology

  • Operating System

    • Modular design to allow faster development times

    • Each layer can only communicate with the layer next to it

User

J2ME Program

C++ Program

Java Virtual Machine

Operating System

Device Hardware


Pcs new technology9 l.jpg
PCS – New Technology

  • Current Device OS’s

    • Symbian, (PSION)

      • Open source anyone can develop for them

      • At this time Symbian is the market leader with new 2.5/3G phones

      • Supported by Nokia and other major manufacturers

        • (http://www.canalys.com/pr/r2004011.htm, 2004)

    • Palm OS (PSION)

    • Windows Smartphone (Microsoft)

    • Windows Mobile 2003 (Microsoft)

      • Controlled developments by Microsoft

    • Other contenders for future consideration

      • Linux (Red Hat)

      • Openwave

      • Savaje

  • Future

    • Although devices are hoping to share a single transmission medium the development for these devices will be more problematic

      • There will be no single defining OS for devices


Pcs new technology10 l.jpg
PCS – New Technology

  • Current Device OS’s

    • Developing application can take place in

      • C++

        • Most manufacturers provide the SDK’s to allow this

        • Issues around the application working on more than one device though

      • Java 2 Micro Edition (J2ME)

        • All of the current OS’s support this language

        • In theory a program written once can run on all devices

          • Reality might be slightly different

      • Microsoft .NET

        • Only works on the Microsoft based devices

          • These are limited at the moment

    • A question could be

      • How long before someone develops a virus for a 3G phone ?


Pcs new technology11 l.jpg
PCS – New Technology

  • Battery Life

    • The more the processor does and the better the graphics on the display the more battery power this takes

    • A fine line needs to be agreed between quality and battery

      • It is no use having 16 million colours if the battery lasts only a few hours

      • The increased functionality will mean an increase in processor & memory use

        • You can no longer put everything that you want to do in hardware, which is more power efficient

      • Early 3G experiments in Japan gave the devices a 1 hour battery life

        (http://www.iapplianceweb.com/story/OEG20021026S0017, 2003)

    • Battery size and weight

      • The physical size of battery can not change and neither can the weight as the user expects a certain size of device


Pcs new technology12 l.jpg
PCS – New Technology

  • Current Battery Technology

    • All battery types work in the same way the only change is the metals used to produce the electrons

      • Nickel-Cadmium (NiCd)

      • Nickel-Metal Hydride (NiMH)

        • Suffers from a memory effect and is not widely used now

      • Lithium-ion battery (LiOn)

  • Future Batteries

    • Fuel Cell

      • Predicted for production in industrial mobile devices by early 2004

      • Instead of recharging the fuel will be replaced in the device

        • The fuel could be either Methanol or Hydrogen

        • This method will work like a rechargeable cigarette lighter


Pcs new technology13 l.jpg
PCS – New Technology

  • Other battery saving techniques

    • All of the OS’s have built into them that the device will turn off when not used except for the transmission of phone data.

      • Certain parts of the device are defined as not essential and will be switched off

      • Processors when not fully required will slow down the clock speed to reduce the power drain

      • As a part of 3G standards the device have built in power controllers for transmissions

        • This means that as you are closer to the base station the amount of power used for your transmissions will be reduced

        • The benefits of this technique are more than battery related as will be discussed in a future week

    • We have already looked at the improving situation with the display screens which take a lot of power


Pcs new technology14 l.jpg
PCS – New Technology

  • Other battery saving techniques

    • ARM processors released in October 2003

      • Have built into them “Intelligent Energy Manager”

      • This works out how much processor is required for a instruction and reduces the power to the processors accordingly


Pcs new technology15 l.jpg
PCS – New Technology

  • Ability to receive data at the correct rate

    • This will be discussed in detail in future weeks


Pcs new technology16 l.jpg
PCS – New Technology

  • Applications

    • With the increased computing power uses need to be developed

    • The communications with a device are referred to as Push/Pull

      • Push

        • Information is sent unsolicited to the user

          • This is starting now, with Orange sending out messages

          • Soon junk (SPAM) text messages will become popular

      • Pull

        • Information which you specially request


Pcs new technology17 l.jpg
PCS – New Technology

  • Push Services

    • The same as email in reality but a little more personalised

    • A mobile device is aware of its current location

      • This is a requirement in the US with the Emergency (E-911) law

        • The emergency services need to know to within 50 metres the location of a device

    • Location based services

      • These services have a good use, they can also be used for commercial benefits

        • Services can be directed to you based on where you are

        • “Tell me where the nearest Chinese restaurant is?”

          • The phone then has the capability to show you a map of your current location and the destination

        • This is the logical upgrade to the Yellow Page services


Pcs new technology18 l.jpg
PCS – New Technology

  • Location Based continued

    • As you walk past a shop the latest offers can be transferred into your phone.

      • This would rely on a profile being setup that tells the shop that you are interested in such items

    • Issues need considering like personal privacy

      • Do you want anyone to know where you are currently located

      • What else will be done with this information?

      • Becomes a issue of the data protection act

        • Does a phone number stored breach the Data Protection Act ?

          • They have nothing personal on you if the receiving company does not store personal details against this phone number


Pcs new technology19 l.jpg
PCS – New Technology

  • Pull Services

    • These you would register for or you physically request at the time.

    • The previous example of the restaurant is a pull service

    • Football results service is a popular current service

  • Future usage

    • In the future companies are hoping that an increased video use will increase revenues

      • Football highlights sent directly to your phone


Pcs new technology20 l.jpg
PCS – New Technology

  • Football highlights

    • This will become a issue when large numbers of people start to watch these video sequences

      • Consider if England won the world cup how many people would pay to see the actual goal !

    • An Israeli company is working on a fix for this

      • The build up to the goal as in the 15 seconds before would be sent as vectors

      • You would see the details of the goal as though it is a computer game

      • Just before the actual goal the action would change to real video footage to show the goal and just after

      • This will save massive amounts of the data on the networks

        • New 3G devices all have full capability to render vector based graphics in real time with the minimum of the data transferred


Pcs new technology21 l.jpg
PCS – New Technology

  • Application possibility

    • Any application available on a PC can be done a mobile device

    • The number of applications is limitless

    • As application become more demanding the capabilities of the devices will increase

      • Considerations always need to be given to

        • Battery life

        • Memory capacity

        • Usability with the current small screens

        • Input into the device


Pcs new technology22 l.jpg
PCS – New Technology

  • Input new device

    • Tracks the movement of your fingers

      • Costs $100, plugs into any USB device

      • Requires a stable surface to work


Pcs new technology23 l.jpg
PCS – New Technology

  • Summary

    • Why we need advanced devices

    • Available Devices

      • What they support

    • Operating Systems

    • Battery Saving Options

    • Ubiquitous Computing

    • Uses of the services

      • Push

      • Pull


ad