MIL-HDBK-9660B
resolution graphic images (at an estimated per image size of 33 Kilobytes), or 63 minutes of 44.1 KHz
16-bit stereo sound without compression. Different information types may also be combined on the same disc. The specifications for CD-ROM are defined in the Yellow Book which may be obtained from ANSI (see ANSI definition).
l. Compiled By - Preparation of multiple source information by an Activity or other entity responsible for data assembly.
m. Contributed By - Activity responsible for the original information.
n. Data Transfer Rate (DTR) - the amount of data that can be transferred over a period of time (usually given in bits per second). Specifications should list both burst DTRs (usually the fastest rate) and sustained (more important when transferring big files like images and in multimedia applications).
Transfer rate = # revolutions/sec x # bytes/sector x # sectors/track x 8 bits
DTR specifications only measure the data transfer speed from drive memory to host computer memory. Real drive performance is impacted by other things such as host processor, host operating system, drive software and drive mechanics.
o. Data Preparer - A person or other entity which controls the processing of the data to be recorded on a volume group.
p. DOD-produced - Compact discs produced by or under the authority of any DOD Activity.
q. DVD - aka Digital Video Disc, Digital Versatile Disc, or simply DVD. A family of high capacity
120mm optical disc types, first introduced by the interactive game and motion picture industries. DVD- Video, the first commercially available product, uses linear recording, and stores MPEG-2 encoded
video, and audio encoded in six-channel Dolby Digital (AC-3) or MPEG-2 audio (popular in Europe). The
DVD-Video specification (Book B) allows for capacities of: 4.7 GB (single-layer), 8.5 GB (dual-layer), 9.4
GB (double-sided) and 17 GB (dual layer, double-sided). It is backward-compatible with CD-A discs. The DVD-Audio specification (Book C) will provide higher fidelity than CD-A. Specifications have also been finalized by the DVD Forum (version 0.9) for DVD-Recordable (DVD-R, Book D, capacity of 3.9
GB, single-sided) and DVD-Rewritable (DVD-RAM, Book E, capacity of 2.6 GB, single-sided).
The DVD-ROM specifications (Book A, read-only), allow for the same capacities as DVD-Video, supports UDF, and is backward-compatible with CD-A and CD-ROM. A DVD-ROM disc is capable of playing MPEG 2 and Dolby Digital sound but does not require it. A DVD-ROM system can play linear DVD-Video movies if it comes with an MPEG 2/Dolby Digital decoder card, decryption hardware and software, software for demultiplexing the bit stream, and software for decoding subpicture and control- stream data.
r. Green Book - The Compact Disc-interactive (CD-i) specifications. This book specifies the sector and track layout and synchronization of video, audio, and data for a CD-i application. This document may be obtained from American CD-i Association, 11111 Santa Monica Blvd., Los Angeles, CA 90025; phone (310) 444-6619.
s. Handling caveats - Warnings or cautions on how the information should be handled or used.
t. HTML - HyperText Markup Language (Version 2.0) - a simple data format used to create
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