1、SMPTE STANDARD SMPTE 224M-2003 Revision of ANSVSMPTE 224M-1996 for Television Digital Component Recording - 19-mm Type D-I - Tape Record Page 1 of 5 pages 1 Scope This standard specifies the dimensions and location of the audio, video, and auxiliary data, analog cue track, time code, and control tra
2、ck records for 19-mm type D-1 television digital component recording, operating on the 5-25/60 television system encoded according to ANSVSMPTE 125M. 2 General specifications 2.1 Dimensions are in the metric system. 2.2 Tests and measurements made on the tape record to check the requirements of this
3、 standard shall be made under the following atmospheric and tape conditions unless otherwise stated: - Temperature: 20C f 1C - Relative humidity: - Barometric pressure: - Tape tension: (50 i 2)% 96 kPa * 10 kPa 0.80 N f 0.05 N 2.3 Conditioning of the tape stock before recording and testing shall be
4、as follows: - Storage conditioning: Not less than 24 hours - Environmental: Stabilized to the conditions specified in 2.2 - Tape tension: Wound on a reel at a tension of 0.6 N to 1.5 N 2.4 The reference edge of the tape for dimensions specified in this standard shall be the lower edge as shown in fi
5、gure 1. The magnetic coating, with the direction of tape travel as shown in figure 1, is on the side facing the observer. The users attention is called to the possibility that compliance with this standard may require use of an invention covered by patent rights. By publication of this standard, no
6、position is taken with respect to the validity of this claim or of any patent rights in connection therewith. The patent holder has, however, filed a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obta
7、in such a license. Details may be obtained from the publisher. No representation or warranty is made or implied that this is the only license that may be required to avoid infringement in the use of this standard. Copyright 92003 by THE SOCIEN OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsd
8、ale Ave White Plains. NY 10607 Approved February 7,2003 (914) 761-1100 SMPTE 224M-2003 2.4.1 All dimensions in table 1 and the figures are to be measured from an equivalent reference edge. The tape reference edge is a line through three points on the edge of the tape separated by 115 mm and constrai
9、ned to lie in one straight line. This constraint may be a physical deformation or an equivalent mathematical transformation. The program area reference point lies on a perpendicular to the reference edge through the center point of the reference edge (see annex A and figure 2). All edge measurements
10、 are based on an average length of 10 mm. 3 Tapespeed The tape speed shall be 286.588 mm/s * 0.2%. 4 Record location and dimensions 4.1 Record location and dimensions shall be as specified in figures 1 and 3 and table 1. 4.2 In recording, including editing, sector locations on each helical track sha
11、ll be contained within the tolerance specified in table 1 and figure 1. Table 1 - Record location and dimensions for 525/60 standard Millimeters A B C D E F G H I J L M N P R T e W X1 x2 x3 b x5 x6 Y Dimensions Nom in a I Tolerance Time code track lower edae 0.2 f 0.1 Time code track upper e I .rAi
12、 I. I. I I I I DisDlacement bv Tension T II II I I II I -i I 1L=23mmi II I I T AX =A%*X T = 0.8N A = 19*0.016rnrn2 E = 8ooo N/mm2 (Youngs Modulus) Corrected Position of the Y = Y,+ Y2 Tape x, = x +AX -. . Reference Edge Figure A.l - Mathematically processed measured tape data Annex B (informative)
13、Bibliography ANSI/SMPTE 125M-1995, Television - Component Video Signal 4:2:2 - Bit-Parallel Digital Interface ANSI/SMPTE 226M-1996, Television Digital Recording - 19-mm Tape Cassettes ANSVSMPTE 227M-1996, Television Digital Component Recording - 19-mm Type D-1 - Helical Data and Control Records ANSI
14、ISMPTE 228M-1996, Television Digital Component Recording - 19-mm Type D-1 -Time and Control Code and Cue Records SMPTE 225M-2003, Television Digital Component Recording - 19-mm Type D-1 - Magnetic Tape SMPTE EG 10-2003, Tape Transport Geometry Parameters for 19-mm Type D-1 Television Digital Component Recording SMPTE EG 21 -1 997, Nomenclature for Television Digital Recording of 19-mm Type D-1 Component and Type D-2 Composite Formats Page 5 of 5 pages
