Glossary

Bit Rate

Value indicating the amount of video data compressed in a DVD per second. The unit is Mbps (Mega bit per second). 1 Mbps indicates that the data per second is 1,000,000 bits. The higher the bit rate is, the larger the amount of data. However, this does not always mean that you can get higher quality pictures.

Chapter

Sections of a picture or a music piece on a DVD that are smaller than titles. A title is composed of several chapters. Each chapter is assigned a chapter number enabling you to locate the chapter you want.

Digital Cinema Sound (DCS)

This is the generic name of the surround sound produced by digital signal processing technology developed by Sony. Unlike previous surround sound fields mainly directed at the reproduction of music, Digital Cinema Sound is designed specifically for the enjoyment of movies.

Dolby Digital

This sound format for movie theaters is more advanced than Dolby Pro Logic Surround. In this format, the rear speakers output stereo sound with an expanded frequency range and a subwoofer channel for deep bass is independently provided. This format is also called “5.1” because the subwoofer channel is counted as 0.1 channel (since it functions only when a deep bass effect is needed). All six channels in this format are recorded separately to realize superior channel separation. Furthermore, since all the signals are processed digitally, less signal degradation occurs.

Dolby Pro Logic Surround

As one method of decoding Dolby Surround, Dolby Pro Logic Surround produces four channels from two-channel sound. Compared with the former Dolby Surround system, Dolby Pro Logic Surround reproduces left-to-right panning more naturally and localizes sounds more precisely. To take full advantage of Dolby Pro Logic Surround, you should have one pair of rear speakers and a centre speaker. The rear speakers output monaural sound.

DTS

Digital audio compression technology that the Digital Theater Systems, Inc. developed. This technology conforms to 5.1-channel surround. The rear channel is stereo and there is discrete subwoofer channel in this format. DTS provides the same 5.1 discrete channels of high quality digital audio. The good channel separation is realized because the all channel data is recorded discrete and processed in digital.

DVD

 

A disc that contains up to 8 hours of moving

 

 

pictures even though its diameter is the same as

 

a CD.

Additional

The data capacity of a single-layer and single-

 

sided DVD, at 4.7 GB (Giga Byte), is 7 times

 

that of a CD. Furthermore, the data capacity of

 

a dual-layer and single-sided DVD is 8.5 GB, a

 

single-layer and double-sided DVD 9.4 GB,

Information

compressed to about 1/40 of its original size.

and a dual-layer and double-sided DVD 17 GB.

 

The picture data uses the MPEG 2 format, one

 

of the worldwide standards of digital

 

compression technology. The picture data is

 

The DVD also uses the variable rate coding

 

technology that changes the data to be allocated

 

according to the status of the picture.

 

The audio data is recorded in Dolby Digital as

 

well as in PCM, allowing you to enjoy more

 

real audio presence. Furthermore, various

 

advanced functions such as the multi-angle,

 

multilingual, and Parental Control functions are

 

provided with the DVD.

 

 

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MHC-S90D 4-235-983-13(2) GB