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Terminology(15/02/2008 12:03:14)
A-Time : Absolute time, elapsed time, measured in minutes, reconds, and frames. (00:00:00) Ref start of the program.
Authoring: Creation of a database for CD-ROM. The end product is usually a search and retrieval type document with the addition of a user interface. Specific authoring functions include tagging and indexing.
Block Error Rate: (BLER) the number of error correction blocks which contain errors, usually expressed in counts per second. Most errors can be corrected by the error correction system; a high BLER can lead to uncorrectable errors or poor performance.
CD: Compact Disc.
CD-DA: Compact Disc Digital Audio.
CD-I: Compact Disc Interactive. An interactive multi-media system which connects to a television. The CD-I standard is known as the Green Book.
CD-ROM: a read-only Compact Disc.
CD-ROM XA: Extended Architecture. A standard that allows interleaving of compressed audio and video data for synchronization purposes.
Disc At Once: during recording of the CDR disc, all data is recorded continuously in one session.
DLT Tape: Digital Linear Tape. This is a standard input media form of DVD.
DVD: Digital Versatile Disc: A high density format for data, video and audio approximately 4X the density of a normal CD.
ECC/EDC: Error Correction Code/ Error Detection Code. Codes specified in the color book standards and embedded in CD data which facilitate the reconstruction of data if read errors occur.
Glass Master: a master made from a CD and used for the replication of additional CDs.
Hybrid Disc: a CD-ROM which can function on both PC and MAC platforms. The disc contains separate ISO 9660 and HFS partitions.
Indexing: Creation of a data index to speed up search and retrieval.
Inlay Card: a printed insert that fits inside a jewel case for identification, advertising, or instruction.
ISO 9660: an international standard for defining the file and directory structures for CD-ROM.
Jewel Case: a hinged plastic case for the storage of a CD.
Media Conversion: The process of converting data from one type of media to another for premastering and mastering. Premastering software typically requires input data on hard disk. 8MM tape and compact disc are preferred as input media for the mastering process.
Mixed Mode Disc: a CD-ROM that contains both computer data and audio tracks.
Mode 1: the most common CD-ROM format. Contains 3 layers of error correction and computer data.
Mode 2: CD-ROM data format with 2 layers of data correction for audio and compressed video.
PQ Information: disc or tape information that determines track start points, control bits, timing info etc.
Premastering: formatting data into the exact image that will appear on the CD-ROM so it is ready to be mastered and replicated. Includes file structure and location.
SID Code: Source Information Code: this code identifies the origin of the disc to help prevent piracy.
SMPTE Time: time code adopted for use in the video industry used in CD production.
Tagging: placing hidden markers in text that indicate where to start specific images.
Track at Once: during recording of CDR disc, each track is written individually. The recorder starts and stops recording between tracks. This puts link transitions between each track which can cause problems for some mastering facilities.
Transfer Rate: The amount of data transferred from a CD-ROM to a computer. This rate is limited by the rotating speed of a disc drive.
Video CD: provides full motion video and audio in a CD format.
Yellow Book: International standard which defines the physical properties of a CD-ROM disc.
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General FAQ(5 August 2004)
Q: When should I replicate and when should I duplicate?
A: For larger quantities over 1000 replication is the most economical choice, while duplication for quantities up to 1000 is faster.
Q: What is the difference?
A: Replication is a process that involves stamping out the CD and silkscreening the artwork onto the CD. Duplication actually burns the information onto a CDR and then uses a thermal or an inkjet printer to print the artwork.
Q: What programs should I use to create artwork for my CD?
A: When creating CD artwork, Photoshop, Illustrator, Corel Draw and Quark Xpress offer the best applications for art.
Q: What are my packaging options?
A: We offer standard packaging ¡V a jewel case, slim jewel case, white CD envelop, vinyl sleeve, cardboard sleeve or C-Shell case. We can also accommodate any of your custom packaging needs. We will work with you to create a satisfying solution to all of your packaging needs.
Q: Do your oval shape CDs come in different sizes?
A: Yes, depending on the amount of information, we will recommend the most appropriate size for you or you can choose from many custom shapes.
Q: Is it recommended to mail jewel cases or cardboard sleeves?
A: Cardboard sleeves or C-Shells are the best option for mailing. Jewel cases may also be mailed if packaged properly.
Q: What is the most economical CD Replication Package?
A: 1-2 colors CD in a white CD envelop is the basic, most economical CD Replication package. However, we offers savings with other packaging options as quantity increases.
Q: Why use a clamshell or a C-Shell packaging?
A: They offer a streamline, hi-tech look while offering ease of use.
Q: Can you just get printing on the CDR?
A: Yes, if you prefer, Princeton Disc can silkscreen onto blank CDR¡¦s without duplication for your future duplication use.
Q: Can I add information to an already duplicated CDR?
A: Once a CDR has been burnt, information may not be added.
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±`¨£°ÝÃD(31 August 2004)
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