IEC 61834-9 pdf download – Recording – Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1 1 25-60, 1 250-50 systems) – Part 9: DVB format
1 General1.1Scope
This part of lEC 61834 specifies the content, format and recording method for the data blocksforming the helical records on the tape containing audio，video and system data. This partdescribes the specifications for the recording of single DVB programmes. The DVB data isdelivered to the digital video cassette recorder via a digital interface or by a built-in tuner (IRD).The DVB data consist of an MPEG2 transport stream containing one or more programmes.
In DVB, the MPEG2 MP@ML is specified to encode the video signal.The maximum bit rate forthe video signal is 15 Mbps.One programme may consist of one video bit stream or severalaudio bit streams and data bit streams.
Due to the varied bit rates of single DVB programmes, several recording modes are specifiedin order to make efficient use of the storage capacity of the digital video cassette recorder.
ln addition to the normal play data stream of DVB recording, one or two special trick play datastreams may optionally be generated and recorded in the video area.
ln this part 9,the data structure of a track is defined by APT = 000b which consists of fourareas as described in 4.3.2 of lEC 61834-1 and AP1 = AP3 = 0o0b. The data structure of MICis the same as in clause 10 of lEC61834-2.
1.2 Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this part of lEC 61834.For dated references,subsequent amendmentsto,or revisions of，any of these publications do not apply.However，parties to agreementsbased on this part of IEC 61834 are encouraged to investigate the possibility of applying themost recent editions of the normative documents indicated below.For undated references, thelatest edition of the normative document referred to applies. Members of lEC and lS0 maintainregisters of currently valid lnternational Standards.
IEC 61834-1:1998，Recording – Helical-scan digital video cassette recording system using6,35 mm magnetic tape for consumer use (525-60，625-50，1125-60 and 1250-50 systems)二Part 1 : General specifications
Amendment 1
IEC 61834-2:1998,Recording -Helical-scan digital video cassette recording system using 6,35mm magnetic tape for consumer use (525-60,625-50,1125-60 and 1250-50 systems) -Part 2:sD formaf for 525-60 and 625-50 sysiems
IEC 61834-4:1998,Recording -Helical-scan digital video cassette recording system using 6,35mm magnetic tape for consumer use (525-60,625-50,1125-60 and 1250-50 systems) – Part 4:Pack header table and contents
IEC 61834-6，Recording – Helical-scan digital video cassette recording system using 6,35 mmmagnetic tape for consumer use (525-60，625-50，1125-60 and 1250-50 systems) – Part 6:sDL format
IEC 61883-1:1998,Consumer audio/video equipment – Digital interface – Part 1: General
IEC 61883-4:1998,Consumer audio/video equipment – Digital interface – Part 4: MPEG2-TSdata transmission
ETs 300 468:1998,Specification for Service Information (Sl) in DvB systems
EBU SBP 492:1992，Teletext specifications
1.3Abbreviations
For the purposes of this part of lEC61834,the following abbreviations apply.
AAUX
Audio auxiliary data
BCH code
Base-Chaudhuri-Hocquenghem code, one of the well-known error correctioncodes
CGMS
Copy Generation Management System
DCT
Discrete cosine transform
DTV
Digital Television(MPEG transmission in uSA) (differs from ATv)
DVB
Digital video Broadcast (used for organization and the signal)
DvCR
Digital video Cassette Recorder
ECc
Error Correction Code
ECC1
lnner error correction (within the SB)
ECC2
Outer error correction (within one track)
ECC3
Extra outer error correction (several tracks)
EIT
Event lnformation Table
FEC
Forward Error Correction (used in MPEG transmission)
GF
Galois field
IRD
lntegrated Receiver Decoder
MIC
Memory in Cassefte
MP@ML
Main Profile at Main Level
MPEG
Motion Pictures Expert Group
NP
Normal play
IEC 61834-9 pdf download – Recording – Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1 1 25-60, 1 250-50 systems) – Part 9: DVB format
