Characteristics of multimedia data


Some of the characteristics of multimedia data are:
1.   Continuous
2. Time based
3.   Compression
4.   Bulky
5.   Needed special hardware’s
1. Continuous
Multimedia data means video and audio data as continuous and time dependent.
Multimedia data refers to the continuous data stream.
Here, continuous refers to the user’s view of data. Multimedia data are represented as sequences of discrete values that replace each other over time.

For Example:
To get a movie scene in a theater or TV, per a second an image array gets replaced 25 times. Or we can say 1 second me 25 images gets displayed to show motion.

Another example is, sound.
A Sound amplitude value is replaced 8000 times per second to develop telephone-quality speech.
2. Time based
Multimedia streams are said to be time-based because, the content of the video and audio streams are defined in timed data elements.
The systems that support multimedia applications need to keep care about the timing the timing when they handle multimedia data.

3. Bulky
Multimedia data streams are often bulky. Because systems that support multimedia applications needed to move data with greater throughput than normal systems.

For example:
A standard video stream requires more than 120Mbps, which exceeds the capacity of a 100Mbps Ethernet network.
4. Compression
A video stream exceeds the Ethernet network capacity, so multimedia data compression is necessary.
Compression can reduce bandwidth requirements by factors between 10 to 100, but it can’t affect the timing requirements of the multimedia data.

Multimedia data compression gives the following formats-
GIF,JPEG,PNG  for images
MPEG, 3GP for videos.
5. Special hardware and software:
Multimedia data may be carried out by special hardware’s and software’s because of increasing processing power of system.

These special hardware and software’s helps to use in desktop conferencing.

DISTRIBUTED SYSTEM covered following topics in these notes.

Python Programming ↓ 👆
Java Programming ↓ 👆
JAVA covered following topics in these notes.
JAVA Programs
Principles of Programming Languages ↓ 👆
Principles of Programming Languages covered following topics in these notes.

Previous years solved papers:
A list of Video lectures References:
  1. Sebesta,”Concept of programming Language”, Pearson Edu 
  2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
  3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
  4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

    Computer Organization and Architecture ↓ 👆

    Computer Organization and Architecture covered following topics in these notes.

    1. Structure of desktop computers
    2. Logic gates
    3. Register organization
    4. Bus structure
    5. Addressing modes
    6. Register transfer language
    7. Direct mapping numericals
    8. Register in Assembly Language Programming
    9. Arrays in Assembly Language Programming


    1. William stalling ,“Computer Architecture and Organization” PHI
    2. Morris Mano , “Computer System Organization ”PHI

    Computer Network ↓ 👆
    Computer Network covered following topics in these notes.
    1. Data Link Layer
    2. Framing
    3. Byte count framing method
    4. Flag bytes with byte stuffing framing method
    5. Flag bits with bit stuffing framing method
    6. Physical layer coding violations framing method
    7. Error control in data link layer
    8. Stop and Wait scheme
    9. Sliding Window Protocol
    10. One bit sliding window protocol
    11. A protocol Using Go-Back-N
    12. Selective repeat protocol
    13. Application layer
    1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
    2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
    3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
    4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.