Post on 21-Dec-2015
transcript
T.Sharon-A.Frank1
Multimedia
Various Applications
2T.Sharon-A.Frank
Contents
• E-mail, MM-Mail and Internet Fax
• Voice Response Systems
• Computer Messaging Services
• A/V Streaming
• Video On Demand (VOD)
• Video/Multimedia Conferencing
• Virtual Reality (VR)
3T.Sharon-A.Frank
Had enough of S-mail!?
4T.Sharon-A.Frank
Multimedia Mail Scenario
CommercialE-Mail “Cloud”
Service
E-Mail to Voice
ProtocolConversion
Phone Booth
Wide Area NetworksMac
UnixBased
System
Remote Mainframe
Local Network – PC
5T.Sharon-A.Frank
E-mail – Killer Application!?
6T.Sharon-A.Frank
Multimedia Mail
7T.Sharon-A.Frank
Multimedia Mail Challenges
• Incorporate Generators/Viewers
• Massive Storage Space
• Different Standards – Interoperability– different media formats
– different platforms
– different protocols
8T.Sharon-A.Frank
MIME Overview
• MIME (Multipurpose Internet Mail Extension):
– Unlimited Text Line Length or Overall Length
– Character Sets other than ASCII
– Binary or Application Specific Files
– Multiple Objects in a Single Message
– Images, Audio, Video Attachments
9
• Need to identify the type of media data in a data stream in a platform-independent way.
• Originally designed to allow inclusion of data other than text in email, adopted by HTTP.
• Content-type: type/subtype.
• Types include text, image, audio, video, application, subtypes define specific formats.
– e.g. text/html, image/gif
MIME Types
10T.Sharon-A.Frank
Example MIME Types
Text• example subtypes: plain, html
Image• example subtypes: jpeg, gif
Audio• example subtypes: basic (8-bit mu-law encoded), 32kadpcm (32 kbps coding)
Video• example subtypes: mpeg, quicktime
Application• other data that must be
processed by reader before “viewable”
• example subtypes: msword, octet-stream
11T.Sharon-A.Frank
Six top-level MIME types and some common subtypes
12T.Sharon-A.Frank
Mail message format
step: protocol for exchanging email messages
RFC 822: standard for text message format:
• header lines, e.g.,– To:– From:– Subject:different from SMTP
commands!• body
– the “message”, ASCII characters only
• line containing only `.’
header
body
.
blankline
13T.Sharon-A.Frank
Message format: multimedia extensions
• MIME: multimedia mail extensions, RFC 2045, 2056• Additional lines in message header declare MIME
content type.
From: alice@crepes.fr To: bob@hamburger.edu Subject: Picture of yummy crepe. MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Type: image/jpeg
base64 encoded data ..... ......................... ......base64 encoded data .
multimedia data
type, subtype, parameter
declaration
method usedto encode data
MIME version
encoded data
14T.Sharon-A.Frank
Mail Types
• Compound Mail– Includes text, graphics and/or images
– All attachments are printable
• Multimedia Mail– Explicit Inclusion – all media included
– Implicit Inclusion – only links to media
15T.Sharon-A.Frank
ManagementServer
MessagingServer
Internet Desktop Fax Service
Telephony Server & PSTN Gateway
NSP
REGION BREGION B
REGION AREGION A
REGION CREGION C
..
..
..
INTERNETINTERNET
Point to point Broadcast
16T.Sharon-A.Frank
Example: Desktop Fax Service: Netcentric User Interfaces
Web BrowserWeb Browser PC ClientPC Client
SendSend
StatusStatus
17T.Sharon-A.Frank
Why use Voice Response Systems?
18T.Sharon-A.Frank
Voice Response Systems
Integrated Computer-Assisted Voice Response SystemIntegrated Computer-Assisted Voice Response System
ICA-VRSICA-VRS
Demo: Kolnoaphone.wav
19T.Sharon-A.Frank
Model of Voice Response System
UsersOffice
Central computer
data
System computer
Management
reportsFax
Phone
Voice Response Hardware
20T.Sharon-A.Frank
Voice Response System – Hardware
• A/D – D/A Conversion
• Audio Compression
• Multi-line Phone Interfaces
• Tones Recognition
• Fax Interface
• Voice Recognition
21T.Sharon-A.Frank
Enabled Solution: Intelligent Answering
Application Host
Telephone System
“Hello…”
Sales
Service
Marketing
• Improved Productivity
• Reduced Cost
• Enhanced Service
• Enhanced Workflow
Calling Number
Called Number
22T.Sharon-A.Frank
Enabled Solution: Computer Assisted Dialing
ApplicationHost
TelephoneSystem
Customer Service
Marketing
Collections
• Efficient Call Processing
• Improved Productivity
• Increased Revenue
Office
Home
23T.Sharon-A.Frank
Computer Messaging Services
24T.Sharon-A.Frank
Messaging and e-Learning
25T.Sharon-A.Frank
Personal Assistance Services
• Single Number Service (SNS)
• Single computerized address book
• Single message box (email, voice message, fax, beeper)
• Voice Activated Dialing (VAD)
26T.Sharon-A.Frank
Single Access to all Services
27T.Sharon-A.Frank
Messaging Models
• Integrated Messaging
• Unified Messaging
28T.Sharon-A.Frank
Telephone SystemE-Mail System
Integrated Messaging
• All messages are copied to the E-Mail system and vice versa.
• Gives instant access from either the PC or the phone.
• Increase network traffic between the two systems.
Storage Storage
29T.Sharon-A.Frank
Unified Messaging
Telephone SystemE-Mail System
• All the messages reside in the same place.
• Simplifies system and data management.
• Phone access may be slower.
Storage
Store
Retrieve
30T.Sharon-A.Frank
Unified Messaging Characteristics
• Unified Mailbox for– Voice
– Fax
• Translators – E-mail to Speech
– Fax to E-mail
– etc.
• Address Book– unique for all types– immediate forward of
messages
• Web based– easy to use– activate from any PC
• E-mail notification
31T.Sharon-A.Frank
Example of usingweb-browser
for voice messages
32T.Sharon-A.Frank
Summary: Unified vs. Integrated Messaging
Unified Messaging Integrated Messaging
Possible delays in accessingmessages from the phone
Instant access to all messages fromthe phone
All data resides in one place Data is replicated between voice andE-mail boxes
When E-mail system is down,voice mail is not accessible
When E-mail system is down, voicemail is still accessible
Voice mail system is simplifiedto be a telephony server;no message store required
Voice mail system is more complex -includes a message store
33T.Sharon-A.Frank
Additional Messaging Applications
• Instant Messaging & Presence (IM&P)– IM: ICQ, AOL Instant Messenger, Yahoo Messenger,
MSN Messenger– P: SIP/SIMPLE, Jabber/XMPP
• Wireless/Mobile Internet– WAP1 (Wireless Application Protocol) & WML (Wireless
Markup Language)– WAP2 & XHTML – SMS (Short Messaging Services) & MMS (Multimedia
Messaging Services)• Interactive TV
– Digital TV– Internet TV
34T.Sharon-A.Frank
Mobile IM&P
35T.Sharon-A.Frank
Mobile Searching in Google
36
Car MM Display
37
MyFord Touch Navigation (1)
38
MyFord Touch Navigation (2)