1、= 3404583 O085429 OBb EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61179 August 1993 TTDC 621.397.43 Descriptom: Recording apparatus, digital recordiiig, video tape recorers, chromiiiaiice, cassette for magnetic tapes, magnetic tapes, digital sigtials, video signals, acoustic signais, record
2、ing track, electric properties, niedianical properties, iiitercliarigeauility, diinensiotis, recording characteristics English version Helical-scan digital composite video cassette recording system using 19 mm magnetic tape, format D2 (NTSC, PAL, PAL-M) (IEC 1179 : 1993) Systme de magntoscope iiunii
3、ique chromiiiaiice composite cassette balayage hlicodal utilisant la baiide magntique de 19 itmi, format D2 (NTSC, PAL, PAL-M) (CE1 1179 : 1993) Videokassettensystein init Schigspuraufieichiiuiig digitaler Coniposite-Signale auf Magnetband 19 initi, D2-Foinat (NTSC, PAL, PAL-M) (IEC 1179 : 1993) Thi
4、s European Stanclard was approved by CENELEC on 1993-07-06. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alter a t 1011. Up-to-date lists and bibliographieal
5、 references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official veisioiis (English, French, German). A version in any other language inade by translation under the responsibility of a C
6、ENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC meinbeis are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Geimaiiy, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, K
7、orway, Portugal, Spain, Sweden, Switzerland and United Kingdoin. CENELEC European Coininittee for Electrotedinical Standardization Comit Europen de Normalisation Electrotedinique Europisches Komitee fiir Elektrotechnische horitiuiig Central Secretariat: rue de Stassart 35, B-1050 Brussels O 1093 Cop
8、yiiglt reseiveci to CENELEC meinbers Ref. No. EN 61179 : 1993 E E 3404583 0085430 8T8 H Page 2 EN 61179 : 1993 Foreword The text of document 60B (CO) 144, as prepared by Sub-committee 60B: Video recording, of IEC Echnical Committee 60: Recording, was submitted to the IEC-CENELEC parallel vote in Mar
9、ch 1992. The reference document was approved by CENELEC as EN 61179 on 6 July 1993. The following dates were fixed: - latest date of publication of an identical national standard (dop) 1994-07-01 - latest date of withdrawal of conflicting national standards (dow) 1994-07-01 Annexes designated normat
10、ive are pai% of the body of the standard. Annexes designated iiiforinative are given oniy for infoimation. In this standard, annexes A, B and ZA are normative and annex C is informative. - - 3404583 0085433 734 Page 3 EN 61179 : 1993 CONTENTS Page INTRODUCTION . 5 SECTION 1 : GENERAL Ciause 1 . 1 1.
11、2 1.3 1.4 2.1 2.2 3.1 3.2 3.3 3.4 3.5 3.6 Scope Normative references Definitions. symbols and abbreviations . Environment and test conditions. reference tape and calibration tape . SECTION 2: VIDEOTAPE-CASSETTE Mechanical parameters Videotape specification SECTION 3: HELICAL RECORDINGS Tape speed .
12、Record location and dimensions Helical track record curvature, tolerance zones. centre lines . Relative positions of recorded signals . Gap azimuth . Transport and scanner 8 8 9 9 11 38 39 39 44 45 45 45 SECTION 4: PROGRAM TRACK DATA ARRANGEMENT 4.1 Introduction . 50 4.2 Labelling convention 50 4.3
13、Sector details 52 4.4 Edit gaps . 59 4.5 Channel code . 60 SECTION 5: VIDEO INTERFACE 5.1 Encoding parameters 62 77 5.2 Parallel digital signal interface . 72 Serial digital signal interface 5.3 3404583 0085432 670 W Page 4 EN 61179 : 1993 SECTION 6: AUDIO INTERFACE Page Clause 6.1 6.2 7.1 7.2 7.3 7
14、.4 7.5 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 9.1 9.2 9.3 9.4 9.5 Encoding parameters Digital signal interface . SECTION 7: VIDEO PROCESSING Recorded data . Intersector distribution . Intrasector shuffling . . . Sector array . . . . . . . Outer code error protection . SECTION 8: AUDIO PROCESSING Introducti
15、on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Source coding . Source processing . . . Auxiliary words . . Outer error protection . . Inner protection and channel coding . Order of transmission to inner coding Order of audio sectors . . . . . SECTION 9: LONGITUDINAL TRACKS General .
16、. . . . . . . , . . . . . , . . . . . . . . . . . . . . . . . . . . . Relative timing . Control track . . Cue record . Time code record Annexes A Audio levels . B Cross-tape track measurement technique C Examples of error correcting codes . Annex ZA (normative) Other international publications quote
17、d in this standard with the references of the relevant European publications . . . . . . . . . . . . . . . . . 78 78 82 82 82 87 87 90 90 94 97 105 106 106 106 107 107 107 1 o9 1 o9 111 112 116 119 E 3404583 0085433 507 Page 5 EN 61179 : 1993 INTRODUCTION The purpose of International Standard IEC 11
18、79 is to define the electrical and mechanical characteristics of equipment which permits the interchangeability of 19 mm cassettes containing digitally recorded composite video programs. The requirements given relate to 525-line composite TV signals (NTSC, PAL-M) with a frame frequency of 29,97 Hz n
19、ominal, and to 625-line composite TV signals (PAL) with a frame frequency of 25 Hz. One video channel and four iodepe.ndent .audio channels are recorded in a digital format. The video signal may be input or output in either analog or digital format. The audio signals may also be input or output in e
20、ither analog or digital format. In addition, a cue audio signal is recorded in analog format. Figures 1 and 2 show a block diagram of the processes involved in the recorder. 3404583 0085434 443 Control track External Timecode time code (analog) Page 6 EN 61179 : 1993 Control track generator - - - an
21、dheads Record b drivers Time code generator Recording Data Sync./ MUX ID generator Inner and head coder Channel HELICAL Record TRACK driver 4- ECC - coder IEC 190 - relative humidity: 50 % f 2 %; - barometric pressure: 96 kPA f 1 O kPA; - tape conditioning: not less than 24 h; - tape tension: 0,7 N
22、f 0,05 N. Page 10 EN 61179 : 1993 1.4.2 Reference tape Blank tape to be used for calibration recordings may be purchased from the following manufacturers : Company Ampex Corporation Sony Corporation Pari Number Series - 319* to be determined 1.4.3 Calibration tape Manufacturers of videotape recorder
23、s io this format specification will sell calibration tapes meeting the following requirements. 1.4.3.1 Record locations and dimensions Tolerances shown in tables 4 and 5. will be reduced by 50 %. 1.4.3.2 Calibration signals Two classes of signals will be recorded on the calibration tapes. a) A serie
24、s of conventional test signals for level calibration, consisting of at least: - video: colour bars; - audio: - cue: 1 kHz tone at operating level; 10 KHz tone at operating level. 1 kHz tone at -20 dB below full level; These test signals are contained on the following tapes: - Sony part number 8-960-
25、071-52 (525/60); - Ampex part number 1525058 (525160); 1525053 (625/50)*. b) Signals recorded on only one of the four record heads for the purpose of mechanical alignment. These test signals are contained on the following tapes: - Sony pari number 8-960-071 -1 1 *; - Ampex part number 1525052-02. Th
26、is information is given for the convenience of users of this International Standard and does not constitute an endorsement by the IEC of the product named. Equivalent products may be used if they can be shown to lead to the same results. - E 3404583 0085439 T25 W From mm O 4 16 63 250 Page 11 EN 611
27、79 : 1993 To Tolerances mm mm 4 20,2 16 20.3 63 +0,4 250 f0,5 f0,7 SECTION 2: VID EOTAP E-CASSETTE Cassette size 2.1 Mechanlcal parameters 2.1 .l Cassette dimensions - Tape thickness 13 pm Tape length Play time The dimensions of the three different cassettes used for recording shall be in accordance
28、 with figures 3 to 17. General tolerances for dimensions, except those for which tolerances are otherwise specified, shall be as indicated in table 1. Table 1 - Mechanical tolerances 2.1.2 Identification of cassettes The three sizes of cassettes shall be identified as: - small: S; - medium: M; - lar
29、ge: L. 2.1.3 The tape length, thickness and play time for the three sizes of cassettes shall be as indicated in table 2 for 525/60 and 625i50 systems. Tape lengths, thickness and play times Table 2 - Tape length and play time of S, M, L cassettes 1 647 207 2.1.4 Face of magnetic coating The magnetic
30、 coating on the tape shall face out of the cassette as specified in figures 3 to 5. U 3404583 0085440 747 Bll Page 12 EN 61179 : 1993 2.1.5 Datum planes 2.1.5.1 figures 6 to 8. Datum plane Z shall be determined by datum areas A, B and C as specified in 2.1 S.2 Datum C does not correspond to a fasten
31、er. 2.1.5.3 Datum plane X shall be orthogonal to datum plane Z and shall run through the center of datum hole (a) and datum hole (b) as specified in figures 9 to 11. 2.1 5.4 Datum plane Y shall be orthogonal to both datum plane X and datum plane Z and shall run through the centre of datum hole (a) a
32、s specified in figures 9 to 11. Maximum area for 12 and release ea for IEC 19393 Dimensions in millimetres NOTES 1 2 Area for the reel. Dimensions with an asterisk (*) are nominal values specifying the tape path. Figure 3 - Top view, inner structure and tape path of the S cassette Page 13 EN 61179 :
33、 1993 Maximum area for tape guide 132 Maximum area for tape guide .Datum plane Y IEC 19393 Dimensions in millimetres NOTES 1 2 Area for the reel. Dimensions with an asterisk (*) are nominal values specifying the tape path. Figure 4 - Top view, inner structure and tape path of the M cassette O 340456
34、3 0085442 5LT W Page 14 EN 61179 : 1993 ue Supply sideJ Datum plane Y Take-up side IEC Ip1193 Dimensions in millimetres NOTES 1 2 Area for the reel. Dimensions with an asterisk () are nominal values specifying the tape path. Figure 5 - Top view, inner structure and tape path of the L cassette El 340
35、4583 0085443 456 Page 15 EN 61179 : 1993 0-10 Datum plane Y 10 I II Oatum piane x Datum plane i. p+-J1 Guiding Maximum holding Support area Datum area . area groove B. Datum plane X I IEC 19593 Dimensions in millimetres NOTES 1 The cassette shall be secured by the recorder andior player unit on the
36、crosshatched area, 2 The periphery within 1 ,O mm from the edge of guiding groove B and from the edge of the cassette shall be removed from the support area. The cassette shall be supported by the recorder andior player unit on the hatched area. 3 Datum plane 2 shall be determined by datum areas A,
37、B, and C. Figure 6 - Datum area, support area and holding area of the S cassette e3 3404583 0085444 392 E Page 16 EN 61179 : 1993 Datum plane X Datum plane Y 5 139 4s 179 -c. Datum plane 2 I Guiding groove i3 I I I IC-. I J 52 186 r -I- I Maximum holding area ESE3 /+ 0 10 Support area Datum area Dat
38、um plane X 1 IEC I Dimensions in millmetres NOTES 1 The cassette shall be secured by the recorder andlor player unit on the crosshatched area. 2 The periphery within 1 ,O mm from the edge of guiding groove B and from the edge of the cassette shall be removed from the support area. The cassette shall
39、 be supported by the recorder andior player unit on the hatched area. 3 Datum plan Z shall be determined by datum areas A, 6, and C. Figure 7 - Datum area, support area and holding area of M cassette B 3404583 0085445 229 Page 17 EN 61179 : 1993 140.5 Datum plane Y Datum plane X fsss P 0 10 Guiding
40、groove B Datum plane 2 Maximum holding area Support area Datum area Datum plane X J97193 Dimensions in millimetres NOTES 1 The cassette shall be secured by the recorder andior player unit on the crosshatched area. 2 The periphery within 1 ,O mm from the edge of guiding groove B and from the edge of
41、the cassette shall be removed from the support area. The cassette shall be supported by the recorder andlor player unit on the hatched area. 3 Datum plane Z shall be determined by datum areas A, B, and C. Figure 8 - Datum area, support area and holding area of L cassette 3404583 O085446 Lb5 Page 18
42、EN 61179 : 1993 I I-109 20.2 I I Max. R 0.5 Max. R 0.5 Section AA. Section BB IEC 1M3 Dimensions in millimetres Figure 9 - Bottom view of S cassette H 3404583 008%4? OTT Page 19 EN 61179 : 1993 Lid lock and release Guiding groove B Max. R 0,5 Max. R 0,5 Max. R 0.5 . Section AA Section BB Section CC.
43、 IEC 199l93 Dimensions in millimetres Figure 10 - Bottom view of M cassette Page 20 EN 61179 : 1993 ,Datum plane Y . r O0 + In -. o Max. R 0.5 Max. R 0.5 Section AA Section BB Section CC Dimensions in millimetres Figure 11 - Bottom view of L cassette 2.1.6 Window and labels 2.1.6.1 Window and label
44、areas shall be as specified in figures 12 to 14. 2.1.6.2 Labels attached to the cassette shall not extend beyond the external dimensions as shown in figures 12 to 14. IEC 2XW3 2.1.6.3 Labels shall not interfere with the identification holes of the users or the manufacturers. M 3404583 0085449774pM P
45、age 21 EN 61179 : 1993 2.1.6.4 Labels shall not interfere with the hub drive and support mechanism. Note 4 Depth: 0.2 to 0,3 Depth: 0.2 to 0,3 Depth: Detent and misinsertion notch Section BB Configration-optional . user plug (2) Details of A IEC 101.93 Dimensions in millimetres NOTES 1 2 3 4 5 The c
46、rosshatched area is available for the window/labels. The side label may be attached to this recessed area. The rear label may be attached to this recessed area. The lid label may be attached to this recessed area. The top label may be attached to this recessed area. Figure 12 - Top and side view of
47、S cassette BI 3404583 0085450 696 Page 22 EN 61179 : 1993 Datum plane Y, Datum plane Note 2 Depth: 0.2 to 0.3 Cu Note 3 misinsertion notch IEC mm3 Details of A Dimensions in millimetres NOTES 1 2 3 4 5 The crosshatched area is available for the windowilabels. The side label may be attached to this r
48、ecessed area. The rear label may be attached to this recessed area. The lid label may be attached to this recessed area. The top label may be attached to this recessed area. Figure 13 - Top and side view of M cassette Page 23 EN 61179 : 1993 Datum plane z Datum plane Y . Details of C Note 2 Depth: 0
49、,2 to 0,3 + Cy0 Cu Cu Note 3 Depth: 0.2 to 0,3 Section BB: Po + o NOTES 1 2 3 4 5 The crosshatched area is available for windows/labels. The side label may be attached to this recessed area. The rear label may be attached to this recessed area. The lid label may be attached to this recessed area. The top label may be attached to this recessed area. Details of A IEC WH3 Dimensions in miiiimetres Figure 14 - Top and side view of L cassette E#i 3404583 0085452 469 Page 24 EN 61179 : 1993 2.1
