1、SMPTE 365M-2001 SMPTE STANDARD for Diaital Television Tape Recordina - 12.65-mm Type D-10 Format for MPEG-2 Compressed Video - 525/60 and 625/50 Table of contents 1 Scope 2 Normative references 3 Abbreviations and acronyms 4 Environment and test conditions 5 Tape and cassette physical specifications
2、 6 Tape record physical parameters 7 Longitudinal track signal and magnetic parameters 8 Helical track signal parameters and magnetization Annex A Video shuffling tables Annex B Digital interfaces Annex C Tape transport and scanner Annex D Compatibility with other digital formats using type L deriva
3、tive cassettes Annex E Compatibility with analog type L Annex F Type D-10 MPEG-2 4:2:2PML stream specifications for 52960 and 625/50 Annex G Type D-10 document reference tree Annex H Bibliography 1 Scope This standard specifies the formatting for the record- ing of data blocks containing MPEG-2 comp
4、ressed video, multiple channels of AES3 audio, and associ- ated data which form helical records on 12.65-mm (0.5-in) tape in cassettes. This standard also defines the helical track record parameters, the content and format of the longitudinal records, and the cassette physical specifications. The co
5、mpressed video uses the MPEG-2 compres- sion which is defined by ISO/IEC 13818-2 , with con- straints as defined by the associated SMPTE 356M. The compressed video channel supports frame fre- quencies of 30/1.001 Hz (hereafter referred to as 525/60) and 25 Hz (hereafter referred to as 625/50). Page
6、1 of 90 pages 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this
7、 standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. AES3-1992, Digital Audio Engineering - Serial Transmission Format for Two-Channel Linearly Represented Digital Audio Data ANSI/SMPTE 259M-1997, Television - 1 O-Bit 4:2:2 Com
8、ponent and 4fc Composite Digital Signals - Serial Digital Interface SMPTE 12M-1999, Television, Audio and Film - Time and Control Code SMPTE 326M-2000, Television - SDTI Content Package Format (SDTI-CP) SMPTE 331 M-2000, Television - Element and Metadata Definitions for SDTI-CP SMPTE 356M-2001, Tele
9、vision -Type D-I O Stream Specifications - MPEG-2 4:2:2PML for 52960 and 625/50 SMPTE RP 204-2000, SDTI-CP MPEG Decoder Templates IEC 61213 (1993-1 I), Analogue Audio Recording on Video Tape - Polarity of Magnetization IEC 61237-1 (1994-06), Broadcast Video Tape Recorders - Methods of Measurement -
10、Part 1: Mechanical Measurements Copyright O 2001 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1100 Approved August 23,2001 SMPTE 365M-2001 O ISOAEC 1381 8-2:2000, Information Technology - Generic Coding of Moving Pictures and Assoc
11、iated Audio Information: Video 5.1.2 Tape width and width fluctuation The tape width shall be 12.650 mm f 0.01 mm. Tape width fluctuation shall not exceed 6 wrn peak to peak. 3 Abbreviations and acronyms The value of tape width fluctuation shallbe evaluated by measuring 10 points, each 20 rnm apart,
12、 over a tape length of 200 mm. For the purposes of this standard, the following abbre- 5.1.3 Tape thickness viations and acronyms apply: AUX: Auxiliary DCT: Discrete cosine transform ECC: Error correcting code EOB: End of block I-NRZI: Interleaved nonretum to zero inverted MUX: Multiplex VLC: Variab
13、le length coding 4 Environment and test conditions Tests and measurements made on the system to check the requirements of this standard shall be carried out under the following conditions: - Temperature: 20C k 1C - Relative humidity: 50% f 2% - Barometric pressure: 86 kPa to 106 kPa - Tape tension:
14、0.3 N f 0.05 N - Tape conditioning: Not less than 24 h 4.1 Calibration tape Calibration tapes meeting the tolerances as specified below should be made available by manufacturers of digital television tape recorders and players in accord- ance with this standard. 4.2 Record locations and dimensions G
15、eometrical location and dimensions of the record- ings on the tape and their relative positions in regard to timing relations of the recorded signals shall be as specified in figure 27, table 1, and clause 6.2. Toler- ances shown in table 1 should, however, be reduced by 50% for calibration tapes. 5
16、 Tape and cassette physical specifications 5.1 Magnetic tape specifications 5.1.1 Base The base material shall be polyester or equivalent. The tape thickness shall be from 12.3 pm to 14.5 pm. 5.1.4 Offset yield strength The offset yield strength shall be greater than 15 N. 5.1.5 Magnetic coating The
17、 magnetic tape used shall have a coating of metal particles or equivalent, longitudinally oriented. The coating coercivity shall be in the range of 118,000 A/m to 136,000 Am, with an applied field of 800,000 Alm (1 0,000 oersted), as measured by a 50- or 60-Hz BH meter or vibrating sample magnetomet
18、er (VSM). 5.2 Cassette specifications 5.2.1 Cassette dimensions Two sizes of cassettes shall be identified as follows: S cassette: 96 x 156 x25 mm (as shown in figures 1 to 13) L cassette: 145x254x25mm (as shown in figures 14 to 26) 5.2.2 Tape length and recording time Maximum tape length and record
19、ing time are recom- mended as follows: S cassette: 239 m + 2 m - O m - 60 minutes for 525160 and 71 minutes for 625/50 L cassette: 725 m + 2 m - O m - 184 minutes for 525160 and 220 minutes for 625150 ?I 5.2.3 Datum planes O Datum plane Z shall be determined by three datum areas, A, B, and C, as sho
20、wn in figures 3a and 16a. Datum plane X shall be orthogonal to datum plane Z Page 2 of 90 pages SMPTE 3651111-2001 and shall include the centers of datum holes (a) and (b). Datum plane Y shall be orthogonal to both datum plane X and datum plane 2 and shall include the center of datum hole (a) as sho
21、wn in figures 2 and 9 15. 5.2.4 Tape winding The magnetic coating side of the magnetic tape shall face outside on both the supply reel and the take-up reel as shown in figures 4 and 17. 5.2.5 Label area and window area The hatched areas shown in figures 1 and 14 are for the label and window. Labels
22、attached to the cassette shall not protrude above the outside cassette surface plane. 5.2.6 Guiding groove For correct insertion into the VTR, four guiding grooves for S cassettes as shown in figures 1 and 2, and three guiding grooves for L cassettes, as shown in figure 15, shall be provided. 5.2.7
23、Safety tab and safety plug for recording inhibition For S cassettes, a safety plug at the supply reel side and a hole of minimum depth 1 O mm from datum plane Z at the take-up reel side shall be provided as shown in figure 2. For L cassettes, a safety plug shall be provided at the take-up reel side
24、as shown in figure 15. The safety plug shall not be deformed by 0.3 mm or more when a force of 2.0 N (204 g9 is applied to the center of it, using a 2.5-mm diameter rod (see figures 12 and 25). player unit and automatically locked when the cas- sette is ejected from it. The locations of the reels, w
25、hen in the unlocked position, are shown in figures 4 and 17. Dimen- sions of the reels are shown in figures 6 and 19. The height of the reels is shown in figures 7 and 20. The reel shall be completely released when the cas- sette lid is opened 23.5 mm minimum from datum plane Z. 5.2.9.1 Reel spring
26、force The reels assembled in the cassette shall be pressed by the reel spring with a specified force under the conditions specified in figures 11 and 24. The spring force shall be 1.5 N +r 0.5 N (153 gf I 51 g9 for S cassettes and 3.5 N k 0.5 N (357 gf k 51 gf) for L cassettes when pressing on a ree
27、l 2.4 mm above datum plane 2 as shown in figures 11 and 24. 5.2.9.2 Extraction force The force (FI, F2) required to pull the tape out from the reel shall not exceed 0.17 N (17g9, as specified in figures 13a and 26a. 5.2.9.3 Friction torque The torque required to wind the tape shall be less than 152
28、mlNm (I 52 gflcm) for S cassettes and less than 30 m/Nm (305 gf/cm) for L cassettes, as specified in figures 13b and 26b. 5.2.10 Protecting lid The cassette lid shall be automatically unlocked when the cassette is inserted into the video tape recorder and/or player unit and automatically locked when
29、 the cassette is ejected from it. 5.2.8 Identification holes Six identification holes (holes 1 to 6) shall be located as specified in figures 2 and 15. For this format, holes 1, 2, 3, and 6 shall be closed. Holes 4 and 5 shall be open. 5.2.9 Reels direction. The reels shall be automatically unlocked
30、 when the cassette is inserted into the video tape recorder andlor The unlocking lever insertion area is specified in figures 8 and 21. The lid shall be unlocked when the lid lock lever is shifted in either direction A or 6, as illustrated in figures 9 and 22. The force required to unlock the lid sh
31、all be less than 1 N (1 O1 gf) in the A direction or less than 1.5 N (152 gf) in the B The lid shall open 29.0 mm with a force of 1.5 N (152 g9 or less as specified in figures 1 O and 23. a Page 3 of 90 pages SMPTE 3651-2001 c. W Y O I I NOTES 1 These dimensions are inspected by using limit gauges.
32、2 No part of the lid shall protrude beyond the bottom plane of the cassette when the lid opens or when it closes. 3 These dimensions shall be specified based on datum plane Z. 4 Label and/or window areas, shown by the hatched area, are available for the label and/or window. 5 The cassette may be hel
33、d in position by the recorder and/or player unit on the holding area shown by the cross- 6 The fine hatched area shows the acceptable range of plug notch position and depth at the side. hatched area. Figure 1 -Top and side view dimensions (Scassette) Page 4 of 90 pages SMPTE 365M-2001 Detail of E NO
34、TES I Datum hole (a) is primary. 2 The crosshatched area shows the VTR detection area. 3 Datum holes (a) and (b) may be utilized for screw holes. Figure 2 -Bottom view dimensions (Scassette) Page 5 of 90 pages - SMPTE 3651-2001 Datum afea 0 Note i Note 4 Figure 3a - Datum areas and supporting areas
35、o-+- x direction o Y direction wl Note 3 Figure 3b -Tape guides Page 6 of 90 pages SMPTE 365M-2001 Supply side Take-up side The crosshatched areas 1 O mm in diameter are datum areas. X Y Of 0.15 Of 0.15 O f 0.15 O k 0.15 NOTES 1 2 The four supporting areas, shown by the hatched areas, shall be copla
36、nar with their corresponding datum areas within 0.05 mm of each of them. Datum plane Z shall be defined by the three datum areas, A, B, C. Datum area D shall be coplanar, within 0.3 mm, with datum plane Z. The areas within 1 mm of the edges of a cassette shall not be included in the supporting areas
37、. Measurement L: 15 mm. Dimensions in millimeters NOTES 1 Direction X: Parallel to the tape running direction. 2 Direction Y: Horizontally orthogonal to direction X. Figure 3 - Datum areas, supporting areas, tape guides and associated dimensions (S-cassette) 10820.8 3220.6 , (76) t- - Datum Dlane x
38、NOTES 1 The rotating direction of reels during forward operation. 2 The lid opening height L shall be 29 mm or more. 3 The reel shall be reset completely when the lid opening height L is 23.5 mm. Figure 4 -Reel location in the unlocked position (S-cassette) Page 7 of 90 pages - SMPTE 365M-2001 sect
39、ion BB i Datum Diane Y sect i on AA NOTES 1 The hatched area is where the loading mechanism of the video tape recorder and/or player unit positions the video 2 The hatched and crosshatched areas are so designed that the loading mechanism of the video tape recorder and/or cassette when it is inserted
40、. player unit unwinds and extends the magnetic tape towards the head drum after the lid opens. Figure 5 - Protecting lid dimensions (Scassette) (Minimum space for loading mechanism) Page 8 of 90 pages SMPTE 3651111-2001 NOTE -The reels with large hubs (hub diameter 53.3 k 0.2 mm) can be used for cas
41、settes whose recording time is less than 12 minutes. Figure 6 - Reel dimensions (S-cassette) Datum Diane i - (76) CUDDY side Take-UD side N Figure 7 -Reel height in the unlocked position (Scassette) Page 9 of 90 pages SMPTE 365M-2001 Datum Diane x i .I- king recti view f irectionA LI 2-Max. RO. 6/ o
42、n B I Datum Diane Y I I I I I I I Datum Dlane Z I I I atm Diane x I I I l l l I I wid I section CC i NOTES 1 The crosshatched and hatched areas show the allowable total area where the unlocking lever extending from the video 2 The crosshatched area shows the range of the unlocking lever insertion wh
43、ich permits the lid to be unlocked. 3 Allowable range within which the unlocking lever can be inserted in the A direction. 4 Allowable range within which the unlocking lever can be inserted in the B direction. 5 The tip of the unlocking lever shall be shaped into a semicircle or hemisphere whose rad
44、ius is half of the unlocking tape recorder and/or player unit can be inserted into a cassette. lever width. Figure 8 - Unlocking lever insertion area (S-cassette) Page 1 O of 90 pages SMPTE 365M-2001 Measuring direction Measuring rod Direction A - The force to unlock the lid shall not be greater tha
45、n 1 .O N in the A direction. Refer to Figure 8 regarding the measuring ranges. Measuring direction d/ Direction B -The force to unlock the lid shall be less than 1.5 N in the B direction. Refer to Figure 8 regarding the measuring ranges. Figure 9 - Lid unlocking force (S-cassette) Measur ing I ever/
46、 II i rec t i on range: 0-29m Figure 10 - Lid opening force (Scassette) /,atum Diane $1 UMeasuring direction N Figure 11 - Reei spring force (Scassette) Page 11 of 90 pages SMPTE 3651-2001 Figure 12 -Safety plug strength (S-cassette) . , , . c -_- -_- . SUDDIY side Take-up side Figure 13a - Extracti
47、on force (FI, F2) Figure 13B - Friction torque NOTES 1 Holdback torque of 1 mlNm. 2 Friction torque to wind the tape. Figure 13 - Extraction force (FI, F2) and friction torque (S-cassette) Page 12 of 90 pages 56to.o I- l -. SMPTE 3651-2001 Datum Diane Y i i Datum Plane x Note 3 andlor window area No
48、te 3 *y NOTES 1 These dimensions are inspected by using limit gauges. 2 No part of the lid shall protrude beyond the bottom plane of the cassette when the lid opens or when it closes. 3 Label and/or window area shown by the hatched area is available for the label and/or window. 4 The cassette may be
49、 held in position by the recorder and/or player unit on the holding area shown by the crosshatched 5 The fine hatched area shows the acceptable range of plug notch position and depth at the side. area. Figure 14 -Top and side views (L-cassette) Page 13 of 90 pages SMPTE 3651-2001 -, SectionA Sect i on BB Sect ion CC sect ion DD sect ion EE sect ion FF Min. 237. 5 Max. 233. 5 Min. 190. 3 z Max. 186. 7 168. 510.3 * NOTES 1 Datum hole (a) is primary. 2 The crosshatched area shows the VTR detection area. 3 Datum holes (a) and (b) may be utilized for screw holes. Fig
