1、STD*BSI RS EN b0843-4-ENGL 2001 H lb24bb9 0893083 6/11 BRITISH STANDARD Helical-scan video tape cassette system using 8 rnrn magnetic tape (8 mm video) - Part 4: Video subcode (VSC) The European Standarc British Standard EN 634342000 has the status of a ICs 33.160.40 NO COPYING WITHOUT BSI PERMISSIO
2、N EXCEPT AS PERMITTED BY COPYBIGET LAW 3s EN i0843-4:2001 IEC 50843-4:2000 STD-BSI BS EN b0843-Y-ENGL ZOOL Lb24669 0899084 550 BS EN 6084342001 been prepared under the direction of the Eiectrotechnicai Amd, No. D (2.8 f 0,90) H for the 625 line - 50 field system. Figure 1 - Area allocation and dimen
3、sions of 1 block VSC O BSI 04-2001 STDBBSL BS EN b0843-4-ENGL ZDDIi Lb24bb9 0899094 4TT W Page 10 EN 60843-4:2000 *0,8 H *1,0 H (03 H, (1,O H) *2,3 H (2,8 H) 4 v. v. r. D PCM data area After recording Video Video overlap margin Data Search Erase code I I Head switching position area mark - Direction
4、 of head motion VSC area IEC 122Rooo Key *: 525 line - 60 field system (): 625 line - 50 field system H: horizontal scanning line The figure is viewed from the magnetic coating side. NOTE The tolerance of the distance from the switching position to the end of the data area along the track is: (2,3 f
5、 0,75) H for the 525 line - 60 field system; rn (2,8 i 0,90) H for the 625 line - 50 field system. Figure 2 - Area allocation and dimensions of 5 block VSC with PCM audio Q BCI 04-2001 STD=BSI BS EN 60843-4-ENGL 2001 1624669 0899095 33b m Page 11 EN 60843-42000 Video 4- Video overlap -4 I Head switc
6、hing position Data Search Erase code area mark Direction of head motion I VSC area I IEC f23/2000 Key *: 525 line - 60 field system (): 625 line - 50 field system H: horizontal scanning line The figure is viewed from magnetic coating side. NOTE The tolerance of the distance from the switching positi
7、on to the end of the data area along the track is: (2,3 f 0,8) H for the 525 line - 60 field system; (2,8 f 1,O) H for the 625 line - 50 field system. Figure 3 - Area allocation and dimensions of 5 block VSC without PCM audio O BSI 04-2001 Page 12 EN 60843-42000 I 1 CRC Block ( 48 bits ) b 3 bits, 8
8、 bits L 8 bits 1 8 bits L 8 bits L 8 bits L 8 bits r- T r T T T STD*BSI BS EN b0843-4-ENGL 2001 m Lb24bb9 0899096 272 m Erase Search code .L mark T Recording direction I I I 4 8 bits LSB MSB B Key *Sync: synchronization code *End: end mark Figure 4 - 1 block VSC IEC 12.BRO Q BSI 04-2001 STD.BSI BS E
9、N 60843-4-ENGL 2001 B! 1624669 OA77017 109 m Page 13 EN 60843-4:2000 Search Data Erase code J1 mark J1 area T T Recording direction ( Block O )( Block 1 )( Block 2 )( Block 3 )( Block 4 ( End 1 1 CRC Block (48 bits ) b 3 bits, 8 bits ., 8 bits i1 8 bits L1 8 bits _1 8 bits ., 8 bits T. c. m IT cy v.
10、 LSB MSB *Sync: synchronization code *End: end mark IEC 125/2000 Figure 5 - 5 block VSC O BSI 04-2001 STDmBSI - BS EN 60843-4-ENGL 2001 1624669 0897098 OfC Page 14 EN 60843-42000 I Search mark Bit interval 525 line - 60 field SP“: from 1 O s to I I s 625 line - 50 field system system LEC 1212ooo NOT
11、E The frequency of the synchronization code shall be 36813 times the horizontal sync frequency. Figure 0 - Synchronization code Block O Block I Block 2 Block 3 Block 4 Extension blocks (5 block VSC only) Common blocks Recording time NOTE The recommended recording interval is 1 min minimum. SP: stand
12、ard play I LPb: from 15 s to 16 s I LP: long play I Q BSI 04-2001 STD.BSI BS EN bB43-4-ENGL 2001 111 Lb24bb 08533 T8L Word O Word 1 Page 15 Mode number EN 60843-4:2000 O (O0 H) 1 (O1 H) 2 (02H) 3 (03 H) 4 (04 H) 5 (05H) 6 (06 H) 7 107H) Table 3 -Word contents I Word number I Contents I Inhibit Time
13、code (for consumer) Reserved Recording date Recording time Reserved Inhibit Video control code 16 (10H) 17 (11 H) ia 112) I Word 2 I Datacode Pre-recorded tape ID Present chapter information Next chaDter information Id3 I 19 (13H) 253 (FDH) 254 (FEH) I Word 4 I Total timeltotal chapter numbers Users
14、 bit (for non-consumer) 8 mm time code (for non-consumer) Table 4 - Mode contents I Mode number Ihexa) I Contents Time code conditions Second Frame BO O O frame and odd frame Even frame except O frame 1 Even frame Odd frame Data (mode number) Time code (O1 H) Other data Timecode (O1 H) Other data O
15、BSI 04-2001 _ STDeBSI ES EN b0843-4-ENGL 2004 M lb24bb9 0699300 523 e Time code conditions (frame) Even frame Page 16 EN 60843-42000 Data (mode number) Time code (01 H) I I I I and odd frame Even frame I CHI Recording time (04 H) except O frame except O frame Even frame CH2 Recording date (03 H) CHI
16、 Recording date (03 H) CH2 Recording time (04 H) Even frame Odd frame I CHI Time code (01 H) Recording time (04 H) CHI CH2 Recording date (03 Hl Recording time (04 H) O O 1 1 Even frame Time code (01 H) Odd frame CHI Recording time (04 H) CH2 Recording date (03 H) O I I O Odd frame CHI Recording dat
17、e (03 H) CH2 Recording time (04 H) Odd frame Other data I Table 7 - Recording datelRecording time (525 line - 60 field system) F Second rime code conditions Frame Data (mode number) BO BI B4 t-r Time code O frame O O0 11 IO o1 O0 11 I CH2 I Recording date 03H) I I 10 Odd frame o1 NOTE CH1 is the vid
18、eo head CHI: CH2 is the video head CH2. Table 8 - Recording datelRecording time (625 line - 50 field system) Second Frame Data (mode number) Q BSI 04-2001 STD-BSI BS EN h0843-4-ENGL 2001 II Lb24bh9 089910L 4bT D Page 17 EN 60843-4:2000 Normal playback 525 line - 60 field Spa: from i 0 s to i i s 625
19、 Ilne - 50 field system system Others NOTE A recording interval for normal playback code of minimum I min is recommended. LP: long play LPb: from 15 s to 16 c SP“: from 1 s to 2 c Table 10 - Pre-recorded tape (525 line - 60 field system) Data (mode number) Even frame 15-29 frame CHI Next chapter (12
20、 H) CH2 Present chapter (11 H) Odd frame 15th CHI Total data (13 Hl frame CH2 Pre-recorded tape ID (10 Hl Other frames Time code (01 H) NOTE CHI is the video head CHI; CH2 is the video head CH2. O BSI 04-2001 STD-BSI BS EN b0843-4-ENGL 2001 II lb24bb O1OZ 3Tb m - I Page 18 I EN 60843-4:2000 Second 8
21、4 Bi O O Table 11 - Pre-recorded tape (625 line - 50 field system) I Time code conditions I Frame Data (mode number) Ist, 13th I CHI Total data (13 Hl I1 O0 11 o1 frames Other frames Ist, 13th CH2 Even frame Odd frame CH 1 Pre-recorded tape ID (10 Hl Present chapter (11 Hl Pre-recorded tape ID 10 o1
22、 io NOTE C I frames I , 11: CH2 il is the video head CHI; CH2 is the vid Other Even frame frames Odd frame Time code Next chapter $0 head CH2. (Q BSI 04-2001 STD-BSI BS EN 60843-4-ENGL ZOO3 RI LL24bb9 O899303 232 188 Page 19 EN 60843-4:2000 Word 2 Word 3 Word 4 Annex A (normative) Minute 2 Units (0-
23、9) Tens (0-5) Numeral Numeral Second 3 Units (0-9) Tens (0-5) Numeral Numeral Frame 4 Units (0-9) Tens (0-2) Numeral Numeral Code assignment Word O Word 1 Word data from Word O to Word 4 shall be recorded severally in accordance with the following rules. Mode number 1 1 O O O O O O Binary Binary Yea
24、r I *5 Units (0-9) Tens (0-9) Numeral Numeral The binary code and the flags shall be recorded in accordance with the definition of several modes. Word 3 Word 4 The numeral code shall be recorded after conversion using table A.2. Day 7 Units (0-9) Tens (0-3) Numeral Numeral Reserved 1111 1111 A.1 Mod
25、e 1 time code (for consumer use) The time code of this mode is based on non-drop frame sequences. For pre-recorded tape, in the lead-in and lead-out part, the time code shall be “O000 0000” (from bit O to bit 7) for the words from Word 1 to Word 4. I BO Bl B2 83 I B4B5 B6 87 I Coding Word O Mode num
26、ber 1 O O O O O O O Binary Binary I Word 1 I Hour I 1 I Units (0-9) I Tens (0-2) I Numeral I Numeral NOTE “1: 00-23 *2: 00-59 3: 00-59 4: 00-29 (525 line - 60 field system) 00-24 (625 line - 50 field system) A.2 Mode 3 recording date BOBlB2B3 I B4B5B6B7 I Coding I Word 2 I Month I 6 I Units (0-9) I
27、Tens (0-1) I Numeral I Numeral NOTE *5: 00-99, from 1980 to 2079 6: 01-12 *7: 01-31 *6 and *7: illegal combination of monthlday shown below: 2/30, 2/31, 4/31, 6/31, 9/31, 11/31, 2/29 (except leap year) O BSI 04-2001 Page 20 Word O Word 1 Word 2 EN 60843-4:2000 _ Mode number O O 1 O O O O O Binary Bi
28、nary Hour *8 Units (0-9) Tens (0-2) Numeral Numeral Minute *9 Units (0-9) Tens (0-5) Numeral Numeral A.3 Mode 4 recording time Word 3 Word 4 I BOB1 6263 I B4B5B6B7 I Coding _ Second *IO Units (0-9) Tens (0-5) Numeral Numeral Time zone *Il Units (0-91 A* I B*C* Numeral Numeral I Flags NOTE *8: 00-23
29、9: 00-59 *IO: 00-59 *I 1: O1 -24 Time zone = integer of G.M.T. (0-23) +1 Default of Word 4 shall be “I 11 11 11 1“. A*: B*: o“ 30min “1“ O min C*: “o“ Enable “1“ Disable tens (0-2) Two bits of the numeral code table must be used (84, 85). 30 min of time zone flag of daylight saving time A.4 Mode 7 v
30、ideo control code Table A.l shows the control command of Word 1. The tape transport executed by the control command is in a forward direction only except “Return to tape top“. Table A.l - Control command Function BO BI B2 83 84 Normal playback 1 I 1 1 1 CUE O 1 1 1 1 Forward search O01 1 I 2 x playb
31、ack 1 1 O1 I I SLOW I I 1 O1 STOP I I 1 1 1 STOPIPB o1 I I 1 I I II Oll I STILUPB Return to tape top 1 1 1 I 1 1 O Q BSI 04-2001 STD.BSI BS EN 60843-4-ENGL 2OOL Lb24669 0895305 005 111 Page 21 EN 60843-4:2000 Word O Word 1 A) Slow code Mode number 1 1 1 O O O O O Binary Binary Control code 1 1 1 O I
32、 1 1 1 Binary Binary BOB1 8283 I B4B5B6B7 I Coding I Word 2 Word 3 Word 4 Minute Units (0-9) Tens (0-5) Numeral Numeral Second Units (0-9) Tens (0-5) Numeral Numeral Frame Units (0-9) Tens (0-2) Numeral Numeral Word 1 Control code Word 2 Hour The time data shows the execution time of slow. Control c
33、ommand Binary Binary Units (0-9) I Tens (0-9) Numeral Numeral The execution mode should return to normal playback after the execution of slow. Word 3 Word4 B) “STILL/PB” code and “STOP/PB” code I BO Bi B2 83 I B4B5B6 87 I Coding I Minute Units (0-9) Tens (0-5) Numeral Numeral Second Units (0-9) Tens
34、 (0-5) Numeral Numeral I Word O I Mode number I 1 1 1 O I O O O O I Binary I Binary I I Word O I Mode number BO Bi 82 83 84 85 B6 B7 Coding 1 1 1 O O O O O Binary I Binary Word 2 Reserved Word 3 Reserved Word 4 Reserved The time data shows the execution time of STILL and STOP. The execution mode sho
35、uld return to normal playback after the execution of the command. C) Othercode 1111 1111 1111 1111 1111 1111 I Word0 I Modenumber I Word 1 I Control code I Control command I Binary I Binary I BO Bi B2 B3 84 B5 B6 87 Coding O O O O 1 O O O Binary I Binary Word 2 Word 3 The execution of the high-speed
36、 tape transport of more than ”2 x playback” shall be released by the normal playback code. Flags *1 O O O O O O O O Flags Flags Flags *2 O O O O O O O O Flags Flags AS Mode 16 pre-recorded tape ID I Word 1 I Type I I 1 1 O O I O O O O I Binary I Binary I I I I I I I Word 4 I Flags I 3 IO O O O I O O
37、 O O Flags I Flags I I I I I I I I NOTE *i, *2. *3: reserved. The pre-recorded tape ID shall be recorded in the lead-in part, the active programme and the lead-out part. O BSI 04-2001 STDeBSI ES EN bO843-4-ENGL 2001 Zb24bb9 0899306 T4L Page 22 EN 60843-4:2000 I Word0 I Modenumber A.6 Mode 17 present
38、 chapter information BO Bi B2 83 B4 85 86 87 Codlng 1 O O O I O O O Binary I Binary Word 2 Word 3 I Word 1 I Chapter number I 4 I Units (0-9) I Tens (0-9) I Numeral I Numeral I Hour *5 Units (0-9) Tens (0-2) Numeral Numeral Minute *6 Units (0-9) Tens (0-5) Numeral Numeral Word 4 Second *7 Units (0-9
39、) Tens (0-5) Numeral Numeral In the lead-in part, from Word 1 to Word 4 shall be “O000 0000” (from bit O to bit 7). Word O I Mode number In the lead-out part, Word 1 shall be “1000 0000” (from bit O to bit 7). BO Bi B2 83 84 B5 B6 87 Codlng O 1 O O 1 O O O Binary I Binary If the elapsed time is disa
40、bled, from Word 2 to Word 4 shall be “O000 0000” (from bit O to bit 7). Word 1 Word 2 A. 7 Chapter number *8 Units (0-9) Tens (0-9) Numeral Numera Minute 9 Units (0-9) Tens (0-5) Numeral Numera Mode 18 next chapter information Word 3 I Second I *IO I Units (0-9) I Tens (0-5) I Numeral I Numera Word
41、4 Frame 1 1 Units (0-9) Tens (0-2) Numeral Numera NOTE *8: 01-99 Number of the next chapter Remaining time of the present chapter 9: 00-59 *IO: 00-59 *Il: 00-29 (525 line - 60 field system) 00-24 (625 line - 50 field system) In the lead-in part, Word 1 shall be O111 1111” (from bit O to bit 7). In t
42、he active programme, if the remain time of the present chapter is more than 59 min 59 s 29 frames (24 frames), words from Word 2 to Word 4 of the next chapter shall be “O000 0001” (from bit O to bit 7). In the lead-out part, words from Word 1 to Word 4 shall be “O000 0000” (from bit O to bit 7). In
43、the last chapter of the active programme, Word 1 shall be “1000 0000” (from bit O to bit 7). If the next chapter is disabled, words from Word 1 to Word 4 shall be “O000 0000” (from bit O to bit 7). Q BSI 04-2001 STDOBSI BS EN b0843-4-ENGL 2OOL H 1624hh9 0899107 988 E Page 23 EN 60843-4:2000 Word 1 W
44、ord 2 A.8 Mode 19 total timeltotal chapter number Total chapter number 1 Units (0-9) Tens (0-9) Numeral Numeral Hour 2 Units (0-9) Tens (0-2) Numeral Numeral I BOB1 B2B3 1 B4B5B6B7 I Codlng Word 3 Word 4 Word O I Mode number I 1 1 O O I 1 O O O I Binary I Binary Minute *3 Units (0-9) Tens (0-5) Nume
45、ral Numeral Second 4 Units (0-9) Tens (0-5) Numeral Numeral Word O Mode number 1011 Word 1 Binary group No. 7 Word 2 Binary group No. 5 Word 3 Binary group No. 3 Word 4 Binary group No. 1 - 1 1 1 1 Binary Binary Binary group No. 8 Binary group No. 6 Binary group No. 4 Binary group No. 2 NOTE “I, 2,
46、3, *4: if the total chapter number or the total time is disabled, each word shall be “0000 0000“ (from bit O to bit 7). 1: 01-99 Total chapter number Word O Mode number Word 1 Hour Total time of the active program *2: 00-23 3: 00-59 4: 00-59 BO B B2 83 84 B5 B6 87 Coding o111 1111 Binary Binary Unit
47、s (0-9) Tens (0-2) I S5 I S6 Numeral *I *5 The total time/total chapter number shall be recorded in the lead-in part, the active programme and the lead-out part. Word 2 Word 3 Word 4 A.9 Mode 253 users bit (for non-consumer use) Minute Units (0-9) Tens (0-5) S4 Numeral *2 “5 Second Units (0-9) Tens
48、(0-2) S3 Numeral 3 5 Frame Units (0-9) Tens (0-2) S1 S2 Numeral 4 5 I BO Bi 82 83 I 84 B5 B6 BI I Coding 1 A.10 Mode 254 8 mm time code (for non-consumer use) NOTE *I, *2, *3, *4: numeral 5: flags SI to S6 flags shall be recorded on the basis of IEC 60461. O BSI 04-2001 STB-ES1 ES EN 60843-4-ENGL ZO
49、OL 3624b59 0899108 814 II Page 24 EN 60843-4:2000 A.11 Numeral code The numeral code table shall be used to convert the two digits of decimal data to the eight bits of the numeral code. Table A.2 - Numeral code Q BSI 04-2001 STD.BS1 BS EN 60843-4-ENGL 2001 m Lb24bb7 0899LO 750 Page 25 EN 60843-4:2000 Area Leader Lead-In Active programme Lead- out No *a *b *c Chapter Chapter Chapter Chapter Black signal 1 2 3 4 burst Present *A o1 02 03 04 *B :hapter ch
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