Digital TV

Q.  What is the full form or meaning of "Adaptation Field" in Digital TV technology?

A.  Ancillary program data (especially PCR) which are uncoded and are transmitted at least every 100ms acc. to MPEG2 or 40 ms acc. to DVB specifications

Q.  What is the full form or meaning of "BAT" in Digital TV technology?

A.  Bouquet Association Table (Table describing a bouquet of programs offered by a broadcaster)

Q.  What is the full form or meaning of "Block" in Digital TV technology?

A.  8x8 pixel block, MPEG2 coded

Q.  What is the full form or meaning of "CA" in Digital TV technology?

A.  Conditional Access (Information of whether the program is scrambled)

Q.  What is the full form or meaning of "CAT" in Digital TV technology?

A.  Conditional Access Table (PID=1: Reference to scrambled programs)

Q.  What is the full form or meaning of "CIF" in Digital TV technology?

A.  Common Intermediate Format (Picture format)

Q.  What is the full form or meaning of "CRC" in Digital TV technology?

A.  Cyclic Redundancy Check

Q.  What is the full form or meaning of "DCT" in Digital TV technology?

A.  Discrete Cosine Transform

Q.  What is the full form or meaning of "DCT-1 / IDCT" in Digital TV technology?

A.  Inverse Discrete Cosine Transform

Q.  What is the full form or meaning of "DFD" in Digital TV technology?

A.  Displaced Frame Difference (Differential picture if there is motion)

Q.  What is the full form or meaning of "DPCM" in Digital TV technology?

A.  Differential Pulse Code Modulation

Q.  What is the full form or meaning of "DTS" in Digital TV technology?

A.  Decoding Time Stamp (Stamp for decoding time, only transmitted if not identical with PTS; reference to PID)

Q.  What is the full form or meaning of "EIT" in Digital TV technology?

A.  Elementary Stream (Compressed data stream for video, audio or data. Preliminary stage to PES)

Q.  What is the full form or meaning of "GOP" in Digital TV technology?

A.  Group of Pictures

Q.  What is the full form or meaning of "I, P, and B pictures" in Digital TV technology?

A.  Intra-coded pictures (I), predicted pictures (P) and bidirectional prediction pictures (B)

Q.  What is the full form or meaning of "IRD" in Digital TV technology?

A.  Integrated Receiver Decoder (Receiver with (MPEG) decoder)

Q.  What is the full form or meaning of "MPEG" in Digital TV technology?

A.  Motion Picture Experts Group (sometimes called Moving Picture Experts Group)

Q.  What is the full form or meaning of "MUSICAM" in Digital TV technology?

A.  Masking Pattern Adapted Universal Subband Integrated Coding and Multiplexing (Compression method for audio coding)

Q.  What is the full form or meaning of "NIT" in Digital TV technology?

A.  Network Information Table (Information about orbit,transponder etc.)

Q.  What is the full form or meaning of "PAT" in Digital TV technology?

A.  Program Association Table (List of all the programs contained in TS Multiplex with reference to PID of PMT)

Q.  What is the full form or meaning of "Pay Load" in Digital TV technology?

A.  Useful data in TS

Q.  What is the full form or meaning of "PCM" in Digital TV technology?

A.  Pulse Code Modulation

Q.  What is the full form or meaning of "PCR" in Digital TV technology?

A.  Program Clock Reference (Reference in TS for the 27-MHz clock recovery. Transmitted at least every 0.1 sec)

Q.  What is the full form or meaning of "PES" in Digital TV technology?

A.  Packetized Elementary Stream

Q.  What is the full form or meaning of "PID" in Digital TV technology?

A.  Packet Identification (Identification of programs in the transport stream)

Q.  What is the full form or meaning of "PMT" in Digital TV technology?

A.  Program Map Table (Reference to packets with PCR Name of programs, copyright, reference of the data streams with PIDs etc. belonging to the relevant program)

Q.  What is the full form or meaning of "PS" in Digital TV technology?

A.  Program Stream (Multiplex of several audio and video PES using the same clock.)

Q.  What is the full form or meaning of "RLC" in Digital TV technology?

A.  Run Length Coding (Coding of data with different number of bits. Frequently reoccurring data has the smallest number of bits, data seldom reoccurring have the highest number of bits.

Q.  What is the full form or meaning of "RST" in Digital TV technology?

A.  Running Status Table (Accurate and fast adaptation to a new program run if time changes occur in the schedule)

Q.  What is the full form or meaning of "SCR" in Digital TV technology?

A.  System Clock Reference

Q.  What is the full form or meaning of "STC" in Digital TV technology?

A.  System Time Clock

Q.  What is the full form or meaning of "UTC" in Digital TV technology?

A.  Universal Time, Coordinated (Greenwich meantime)

Q.  What is the full form or meaning of "ADSL" in Digital TV technology?

A.  Asymmetric Digital Subscriber Line (A COFDM-coded digital data stream with a rate up to 8 Mbit/s (down stream) and 1 Mbit/s (up stream) is transmitted via telephone lines, mainly for video on demand.)

Q.  What is the full form or meaning of "ATSC" in Digital TV technology?

A.  Advanced Television Systems Committee (american standardization group for digital terrestrial transmission)

Q.  What is the full form or meaning of "CNR" in Digital TV technology?

A.  Carrier to Noise Ratio (Indicates how far the noise level is down on carrier level)

Q.  What is the full form or meaning of "COFDM" in Digital TV technology?

A.  Coded Orthogonal Frequency Domain Multiplex

Q.  What is the full form or meaning of "DVB" in Digital TV technology?

A.  Digital Video Broadcasting (Broadcasting TV signals to a digital standard)

Q.  What is the full form or meaning of "DVB-C" in Digital TV technology?

A.  Digital Video Broadcasting-Cable (Broadcasting TV signals to a digital standard by cable)

Q.  What is the full form or meaning of "DVB-S" in Digital TV technology?

A.  Digital Video Broadcasting-Satellite (Broadcasting TV signals to digital standard via satellite)

Q.  What is the full form or meaning of "DVB-T" in Digital TV technology?

A.  Digital Video Broadcasting-Terrestrial (Terrestrial broadcasting of TV signals to digital standard)

Show Answers Q.  What is the full form or meaning of "16 VSB" in Digital TV technology? A.  Vestigial Side Band (Modulation High Data Rate mode especially for Cable Systems) Q.  What is the full form or meaning of "PTC" in Digital TV technology? A.  Physical Transmission Channel

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