Code: AC21 / AT12                                                              Subject: MULTIMEDIA SYSTEMS

Time: 3 Hours                                                                                                     Max. Marks: 100

NOTE: There are 9 Questions in all.

· Question 1 is compulsory and carries 20 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.

· Out of the remaining EIGHT Questions answer any FIVE Questions. Each question carries 16 marks.

· Any required data not explicitly given, may be suitably assumed and stated.

Q.1       Choose the correct or best alternative in the following:                                         (2x10)

             a.  Delay jitter of individual packets are bounded in

(A) Asynchronous Transmission mode.                                                                             

                  (B) Synchronous Transmission mode.

(C) Isochronous Transmission mode.   

                  (D) None of the above.

             b.  In an uncompressed video sequence consisting of sequence of images, each image is

(A) 512 x 512 group of pixels.              (B) 256 x 256 group of pixels.

(C) 64 x 64 group of pixels.                  (D) 16 x 16 group of pixels.

             c.  The data rate of a telephone quality signal using DPCM is

(A) 8 kbits / sec (B) 32 kbits / sec

(C) 56 kbits / sec (D) 64 kbits / sec

d. MPEG uses _________________ compression technique.

(A) Entropy encoding                           (B) Hybrid coding

(C) Source coding                                (D) All of the above

e. Intra frame encoded used for fast forward or fast received modes is

(A) I – frames.                                     (B) P – frames.

(C) D – frames.                                    (D) B – frames.

             f.   The order of the given layers in a video data stream is

                  (i)   Sequence layer                               (ii) Macro block layer

            (iii) Slice layer                                       (iv) Picture layer

(A) i – iv – iii – ii                                  (B)  i – iv – ii – iii

(C) iv – iii – ii – i                                  (D)  iv – iii – i – ii

             g.  If the audio signal is sampled with frequency 44.1 kHz and each sample with 16 bits.  Then data   transfer rate is

(A) 44100 bytes / sec.                          (B) 88200 bytes / sec.

(C) 22050 bytes / sec.                          (D) None.

             h.  The bandwidth for B channel is

(A) 64 kbits / sec                                 (B) 385 kbits / sec

(C) 1920 kbits / sec                             (D) None

             i.   Dynamic user interactions are more adaptive in

(A) Pyramid Broadcasting.                   (B) Pagoda Broadcasting.

(C) Stream Broadcasting.                     (D) Harmonic Broadcasting.

             j.   Locale spatial relationships are used in

(A) Color based screening tests.          

                  (B) Estimation of Image object pose.   

(C) Texture support.                            

                  (D) Shape verification.

Answer any FIVE Questions out of EIGHT Questions.

Each question carries 16 marks.

  Q.2     a.   Briefly explain various types of messages in the MIDI standard.                          (6)

                   b.                                                        Explain the difference between Temporal and Non-Temporal Media. Give example for each.                                                                                      (6)

c. Write about the data stream characteristics for continuous media.                        (4)

                                                                                                                                                                                 6 marks

Q.3     a.   Describe the various types of synthetic object codings used in MPEG-4.                            (10)

             b.   Differentiate between video data stream and audio data stream.                          (6)

  Q.4     a.   Explain briefly the different modes supported by JPEG.                                       (8)

             b.   Differentiate between MPEG-1 and MPEG-2 compression schemes.                 (8)

Q.5     a.   Compare VOP based coding with Frame based coding.                                     (8)

             b.   Explain about MPEG Audio Encoder and decoder with a neat diagram.              (8)

Q.6     a.   List the steps involved in Rate Monotonic Algorithm.                                          (8)

                   b.                                                        Discuss the process of JPEG 2000 Image compression.                (8)

Q.7     a.   Differentiate between RTP and RSVP.           (8)

             b.   Write short notes on the following

                   (i)  Content Based Information Retrieval

                   (ii) Resource scheduling for Real-time systems                                                    (8)

  Q.8     a.   Compare various switching Technologies.                                                           (8)

             b.   Explain the importance of different performance parameters in ATM environment.                        (8)

Q.9     a.   Write about Internet Transport protocols.                                                         (10)

b.   Discuss the process of Image retrieval. (6)