JVC UX-QD7M, LVT1220-002A, UX-QD7W Disc Structure, About MP3/WMA/JPEG discs, MP3/WMA Jpeg discs

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Notes on Operation

About MP3/WMA/JPEG discs

Playable MP3/WMA/JPEG discs and files

•Discs recorded in the ISO 9660 format are play- able (except discs recorded in the "packet write" format (UDF format)).

•Discs recorded in the multi-session format are also playable.

•Files with an extension of ".mp3", ".wma", ".jpg" or ".jpeg" (extensions with uppercase and lower- case letters mixed are also acceptable) are play- able.

Notes on MP3/WMA/JPEG discs and files

•A disc may not be played back, or reading it may take a long time depending on its recording con- ditions or properties.

•The time needed for reading varies with the num- ber of groups or tracks (files) recorded on the disc.

•If a character other than single byte English characters is used in the file name of an MP3/ WMA/JPEG file, the track/file name will not be displayed correctly.

•The order of tracks/groups displayed on the MP3/WMA Control screen, and the order of files/ groups displayed on the JPEG Control screen may be different from that of files/folders dis- played on PC's monitor screen.

•In the case of MP3/WMA discs, since groups/ tracks are played back in alphabetical order, an off-the-shelf MP3/WMA disc may be played back in an order different from that indicated on the label attached to the disc.

•Playing back an MP3/WMA file including a still image may take a long time. The elapsed time is not displayed until playing back starts. If playing back starts, the elapsed time may not be dis- played correctly.

•For an MP3/WMA file, a disc with a sampling fre- quency of 44.1 kHz and transmission rate of 128 kbps is recommended.

•This product is not compatible with MP3i or MP3PRO.

•This product can play back a baseline JPEG file, excluding monochromatic JPEG files.

•This product can play back JPEG data taken with a digital camera conforming to the DCF (Design Rule for Camera File System) standard (when a function is applied such as the automatic rotation function of a digital camera, data goes beyond the DCF standard, so the image may not be dis- played).

•If data has been processed, edited and restored with PC image editing software, the data may not be displayed.

•This product cannot play back animations such as MOTION JPEG, or still pictures (TIFF etc.) other than JPEG, and image data with sound.

•The resolution of 640 x 480 pixels is recom- mended for JPEG files. If a file has been recorded at a resolution of more than 640 x 480 pixels, display may take a long time. An image with a resolution of more than 8 192 x 7 680 pix- els cannot be displayed.

•Files recorded on DVD-R/RW discs cannot be played back.

Disc Structure

DVD VIDEO

A DVD VIDEO consists of "titles" and each title may be divided into "chapters".

Title 1 Title 2

Chapter 1 Chapter 2 Chapter 3 Chapter 1 Chapter 2

DVD AUDIO

A DVD AUDIO consists of "groups" and each group may be divided into "tracks".

Some discs include a "bonus group" that requires

a password for playing ( page 31).

Group 1 Group 2

Track 1 Track 2 Track 3 Track 1 Track 2

VCD/SVCD/CD

VCD, SVCD and CD consist of "tracks".

In general, each track has its own track number. (On some discs, each track may also be further divided by indexes.)

Track 1 Track 2 Track 3 Track 4 Track 5

MP3/WMA [JPEG] discs

On an MP3/WMA [JPEG] disc, each still picture (material) is recorded as a track [file]. Tracks [Files] are usually grouped into a folder. Folders can also include other folders, creating hierarchical folder layers.

This unit simplifies the hierarchical construction of a disc and manages folders by "groups".

Up to 99 groups

Group 1			Group 2
Track 1	Track 2	Group 3	Group 4	Group 5
[File 1]	[File 2]

Up to 150 files

This product can recognize up to 1 000 tracks [files] in a disc. Also, the product can recognize up to 150 tracks [files] per group and up to 99 groups in a disc. Since the unit ignores the tracks [files] whose numbers are exceeding 150 and the groups whose numbers are exceeding 99, they cannot be played back.

•If there is any type of files other than MP3/WMA [JPEG] files in a disc, those tracks [files] are also counted in the total file number.

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