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NorDig Unified ver 2.1
NorDig Unified Requirements
for
Integrated Receiver Decoders
for use in
cable, satellite, terrestrial and IP-based networks
6
NorDig Unified ver 2.1
2
1 Introduction ....................................................................................................................................... 7
1.1 Scope ......................................................................................................................................... 7
1.2 Docume
nt History ................................................................................................................... 10
1.3 Term
inology
............................................................................................................................ 11
1.4 Definitions .............................................................................................................................. 11
1.5 References ............................................................................................................................... 12
1.6 List of Abbreviations
.............................................................................................................. 16
2 General Features of the NorDig IRD
............................................................................................... 19
2.1 Introduction ............................................................................................................................. 19
2.2 IRD Hardware and Firm
ware
.................................................................................................. 19
2.2.1 Overview ............................................................................................................................ 19
2.2.2 RF Interface and Tuner/Dem
odulator
................................................................................. 20
2.2.3 RFin-RFout By
pass (option)
.............................................................................................. 20
2.2.4 Interaction Channel Interface
............................................................................................. 20
2.2.5 Dem
u
ltiplexer ..................................................................................................................... 20
2.2.6 Video/Audio Decoding
....................................................................................................... 21
2.2.7 Graphics processor ............................................................................................................. 21
2.2.8 IRD Controller Unit and Bootloader
.................................................................................. 21
2.2.9 Com
m
on Interface and Plug-in CA Module ....................................................................... 21
2.2.10 Sm
art Card Interface(s) and Sm
art Card Reader(s) ........................................................ 21
2.2.11 Rem
o
te Control and Remote Keyboard ......................................................................... 21
2.2.12 Scart Interfaces ............................................................................................................... 21
2.2.13 Audio Output Interfaces (option)
................................................................................... 21
2.2.14 Data Interface (option)
................................................................................................... 21
2.2.15 Main hardware/firm
w
are functions-Overview per configuration .................................. 22
2.2.16 Additional hardware/firm
w
are for the PVR features ..................................................... 23
2.3 Sy
stem
Software and API ....................................................................................................... 23
2.3.1 Introduction ........................................................................................................................ 23
2.3.2 Principal Software Structure
............................................................................................... 23
2.3.3 Sy
stem
Software ................................................................................................................. 24
2.3.4 NorDig APIs
...................................................................................................................
.... 24
2.3.5 PVR related software .......................................................................................................... 24
2.4 General Product Requirem
e
nt ................................................................................................. 25
2.4.1 General ............................................................................................................................... 25
2.4.2 Energy
Efficiency
............................................................................................................... 25
PART A: Hardware and Firm
ware
........................................................................................................... 26
3 The Frontend of the NorDig IRD
.................................................................................................... 27
3.1 Com
m
on Features ................................................................................................................... 27
3.1.1 General Features ................................................................................................................. 27
3.1.2 Com
m
on Scanning Procedures ........................................................................................... 27
3.1.3 Quality
Reception Detector
................................................................................................ 27
3.2 Satellite Tuner and Dem
odulator
............................................................................................ 27
3.2.1 General ............................................................................................................................... 27
3.2.2 RF/IF Characteristics .......................................................................................................... 27
3.2.3 Input Frequency
Range/Tuning Range
............................................................................... 28
3.2.4 Tuning/ Scanning Procedures
............................................................................................. 28
3.2.5 Control Signals
...............................................................................................................
.... 28
3.2.6 Dem
odulation ..................................................................................................................... 28
3.2.7 Satellite Tuner Interface and Signal Levels
........................................................................ 28
3.2.8 Perform
ance ........................................................................................................................ 29
3.3 Cable Tuner and Dem
odulator
................................................................................................ 29
3.3.1 General ............................................................................................................................... 29
3.3.2 RF Characteristics ............................................................................................................... 30
6
NorDig Unified ver 2.1
3
3.3.3 Bypass RF
in
to RF
out
.......................................................................................................... 31
3.3.4 Tuning/Scanning Procedure ............................................................................................... 31
3.3.5 Perform
ance Data ..............................................................................................................
. 32
3.3.6 Spurious Em
ission
.............................................................................................................. 34
3.4 Terrestrial Tuner and Dem
odulator
......................................................................................... 35
3.4.1 General ............................................................................................................................... 35
3.4.2 Frequencies and Signal Bandwidths
................................................................................... 35
3.4.3 Modes ................................................................................................................................. 36
3.4.4 Reception quality
/Tuning/Scanning Procedures................................................................. 36
3.4.5 Changes In Modulation Param
e
ters .................................................................................... 40
3.4.6 RF Input Connector
............................................................................................................ 40
3.4.7 RF Output Connector (option)
............................................................................................ 40
3.4.8 Perform
ance ........................................................................................................................ 41
3.5 IP Based Front-End
............................................................................................................
..... 45
3.5.1 General ............................................................................................................................... 45
3.5.2 Network Interface ............................................................................................................... 45
3.5.3 Protocol Suite
................................................................................................................
..... 46
3.5.4 Dy
nam
ic Address Allocation .............................................................................................. 46
3.5.5 Service Selection
................................................................................................................ 46
4 MPEG-2 Dem
u
ltiplexer ................................................................................................................... 47
4.1 General .................................................................................................................................... 47
4.2 DVB Descram
bler
Performance ............................................................................................. 47
4.3 Sy
stem
Clock Recovery .......................................................................................................... 48
5 Video Decoder
................................................................................................................................. 49
5.1 Requirem
e
nts for Video Decoder in NorDig SD IRDs ........................................................... 49
5.1.1 General ............................................................................................................................... 49
5.1.2 Constraints and Extensions
................................................................................................. 49
5.2 Additional requirem
e
nts for Video Decoder in NorDig HD IRDs ......................................... 50
5.2.1 General ............................................................................................................................... 50
5.2.2 Constraints and Extensions
................................................................................................. 51
6 Audio Decoder
................................................................................................................................. 56
6.1 Requirem
e
nts for Audio Decoder in NorDig SD IRD ............................................................ 56
6.1.1 General ............................................................................................................................... 56
6.1.2 Constraints and Extensions
................................................................................................. 56
6.1.3 Applications ........................................................................................................................ 57
6.2 Additional Audio Decoder requirem
e
nts for HD IRDs .......................................................... 58
6.2.1 General ............................................................................................................................... 58
6.2.2 Audio form
ats
..................................................................................................................... 58
6.2.3 Audio prioritising
............................................................................................................
... 60
6.2.4 Clean Audio
...................................................................................................................
..... 62
6.2.5 Audio stream
m
ixing .......................................................................................................... 62
6.2.6 Adjustm
e
nt of video/audio-delay ....................................................................................... 63
6.2.7 Audio handling when changing service or audio form
at
.................................................... 63
6.2.8 IRD Internal Reference Level
............................................................................................. 63
7 Teletext and Subtitling..................................................................................................................... 64
7.1 General .................................................................................................................................... 64
7.2 Teletext ................................................................................................................................... 64
7.2.1 Teletext for NorDig SD IRD
.............................................................................................. 64
7.2.2 Teletext for NorDig HD IRD
.............................................................................................. 64
7.3 DVB Subtitling
................................................................................................................
....... 65
7.3.1 General ............................................................................................................................... 65
7.3.2 Subtitling subset
.............................................................................................................
.... 65
8 Interfaces and Signal Levels
............................................................................................................ 67
8.1 Introduction ............................................................................................................................. 67
6
NorDig Unified ver 2.1
4
8.2 RF- bypass (option) ................................................................................................................ 67
8.3 Interaction Channel Interface .................................................................................................. 67
8.3.1 NorDig Basic and NorDig Enhanced
................................................................................. 67
8.3.2 NorDig Interactive
.............................................................................................................. 67
8.4 SCART Interfaces ................................................................................................................... 67
8.5 Audio Output Interfaces (Option)
........................................................................................... 68
8.5.1 VCR SCART connector for analogue audio
...................................................................... 68
8.5.2 RCA connector for analogue audio
.................................................................................... 68
8.5.3 S/PDIF connector for digital audio
..................................................................................... 68
8.6 Data Interface (Option) ........................................................................................................... 68
8.7 Rem
o
te Control Interface ........................................................................................................ 68
8.7.1 General ............................................................................................................................... 68
8.7.2 Functions ............................................................................................................................ 69
8.8 Rem
o
te Keyboard Interface (Option) ..................................................................................... 71
8.9 The HD Interface for NorDig HD IRDs
................................................................................. 71
8.9.1 General ............................................................................................................................... 71
8.9.2 Video Output and Display
.................................................................................................. 71
8.9.3 Audio Output
..................................................................................................................
.... 73
8.9.4 Signal protection
.............................................................................................................
.... 73
8.10 Additional analogue interfaces (optional) for NorDig HD IRDs
............................................ 75
8.10.1 General ........................................................................................................................... 75
8.10.2 Analogue video interface (optional)
............................................................................... 75
8.10.3 Analogue audio interfaces (optional).
............................................................................ 75
9 Interfaces for Conditional Access
.................................................................................................... 76
9.1 General .................................................................................................................................... 76
9.2 Use of the DVB Com
m
on Interface ........................................................................................ 76
9.2.1 General ............................................................................................................................... 76
9.2.2 Minim
u
m requirements for the Common Interface ............................................................ 76
9.2.3 Minim
u
m requirements for the NorDig CA-Module ......................................................... 76
9.3 Use of Sm
art Card Reader
...................................................................................................... 77
9.3.1 General ............................................................................................................................... 77
9.3.2 The Sm
art Card Interface
.................................................................................................... 77
9.3.3 ECM and EMM Filtering
................................................................................................... 77
9.3.4 Descram
bling of selected services ...................................................................................... 77
9.3.5 Application Level Interface for Conditional Access.
......................................................... 77
10 The Bootloader (Sy
s
tem Software Update) ..................................................................................... 78
10.1 Introduction ............................................................................................................................. 78
10.2 Over-the-air/in-network via Broadcast Download
.................................................................. 78
10.3 Local Download
...................................................................................................................... 79
10.4 Network Managem
e
nt and Provisioning ................................................................................. 79
11 Perform
ance ..................................................................................................................................... 80
11.1 Introduction ............................................................................................................................. 80
11.2 Video Perform
ance of RGB and PAL Signals
........................................................................ 80
11.3 Audio Perform
ance of the Decoded Digital Signal
................................................................. 80
11.4 Zapping Tim
e
for TV Services ............................................................................................... 80
Part B: The sy
stem
software with application ..................................................................................... 82
12 Service Inform
ation
......................................................................................................................... 83
12.1 General .................................................................................................................................... 83
12.1.1 General Requirem
e
nts .................................................................................................... 83
12.1.2 PSI/SI classification ....................................................................................................... 84
12.1.3 Private data specifier value
............................................................................................ 84
12.1.4 Service Ty
pes
................................................................................................................. 84
12.1.5 Service Categories .......................................................................................................... 85
12.1.6 Used PSI/SI descriptors
.................................................................................................. 86
6
NorDig Unified ver 2.1
5
12.1.7 Character sets in text strings ........................................................................................... 87
12.2 Network Information Table (NIT) .......................................................................................... 87
12.2.1 The Network inform
ation Table Descriptors
................................................................. 87
12.2.2 Cable Delivery
Sy
stem Descriptor ................................................................................. 88
12.2.3 Terrestrial Delivery
Sy
stem Descriptor .......................................................................... 88
12.2.4 Linkage Descriptor
......................................................................................................... 88
12.2.5 Frequency
List Descriptor
.............................................................................................. 88
12.2.6 NorDig linkage for bootloader
....................................................................................... 88
12.2.7 Default authority descriptor (in NIT) (NorDig PVR only) ............................................ 89
12.2.8 NorDig private; Logic_Channel_descriptor (LCD) ....................................................... 90
12.3 Service Description Table (SDT)
............................................................................................ 99
12.3.1 The Service Descriptor Table Descriptors
..................................................................... 99
12.3.2 Service Descriptor .......................................................................................................... 99
12.3.3 CA Identifier Descriptor
................................................................................................. 99
12.3.4 Linkage Descriptor
......................................................................................................... 99
12.3.5 Default authority descriptor (in SDT) (NorDig PVR only) ......................................... 100
12.4 Event Information Table ....................................................................................................... 100
12.4.1 General ......................................................................................................................... 100
12.4.2 The Event Inform
ation
Table Descriptors .................................................................... 101
12.4.3 Keyword Descriptor / New Private descriptor (WL 022, alt B) (NorDig PVR only) .. 101
12.4.4 CA Identifier Descriptor ............................................................................................... 101
12.4.5 Content Descriptor
....................................................................................................... 101
12.4.6 Content Identifier Descriptor (NorDig PVR only) ....................................................... 101
12.4.7 CRID encoding and reuse (NorDig PVR only) ............................................................ 102
12.4.8 Event Information Table Schedule ............................................................................... 103
12.5 Tim
e
and Date Table and Time Offset Table ........................................................................ 103
12.5.1 Tim
e
Offset Table Desriptor ........................................................................................ 104
12.6 PSI Requirem
e
nts .................................................................................................................. 104
12.6.1 Program
Map Table Descriptors
.................................................................................. 104
12.6.2 Conditional Access Table Descriptors
......................................................................... 104
12.6.3 Com
ponent priority
multiple video or audio streams ................................................... 105
12.6.4 Content_ Protection_descriptor
.................................................................................... 105
13 Navigator ....................................................................................................................................... 107
13.1 General .................................................................................................................................. 107
13.2 Service List
........................................................................................................................... 107
13.2.1 Service List Requirem
e
nts............................................................................................ 107
13.2.2 Service list functions for the Network Inform
ation Table (NIT)
................................. 108
13.2.3 Service List functions for the Service Description Table (SDT)
................................. 108
13.2.4 Network Evolution and Service Changes
..................................................................... 108
13.3 Event Schedule Guide (ESG)
................................................................................................ 109
13.3.1 ESG Requirem
e
nts ....................................................................................................... 109
13.3.2 Event Inform
ation Table (EIT)
.................................................................................... 110
13.3.3 Tim
e
and Date Table (TDT) and Time Offset Table (TOT) ........................................ 110
13.4 Service Discovery
and Selection for IRDs with IP-based front-end
..................................... 111
14 NorDig PVR feature requirements (NorDig PVR only) ................................................................ 112
14.1 Introduction- PVR ................................................................................................................. 112
14.2 General- PVR
........................................................................................................................ 112
14.2.1 Recording File Sy
stem
................................................................................................. 112
14.2.2 Recording capacity
....................................................................................................... 112
14.2.3 Deletion of recordings
.................................................................................................. 113
14.2.4 Failed and incom
p
lete recordings................................................................................. 113
14.2.5 Save only
the last num
ber of episodes ......................................................................... 113
14.2.6 File sy
stem
intact after update ...................................................................................... 113
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- john5190002012-10-24标题注明英文原版会更好一些。
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