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Term Definition

DVD+RW is a recordable and rewritable disc that is the same size as a DVD-Video. Recordings can be erased and the same disc can be used again for the maximum of 1,000 times.


DVD-R is a recordable disc that is the same size as a DVD-Video. Contents can be recorded only once to a DVD-R disc.


DVD-RW is a recordable and rewritable disc that is the same size as a DVD-Video. A DVD-RW disc can be used in two modes: VR mode and Video mode. DVD created in Video mode has the same format as a DVD-Video, while discs created in VR (Video Recording) mode allow the contents to be programmed or edited.


(1) A technological format developed to create a pre-recorded video disc for commercial release; (2) A pre-recorded DVD disc, which is usually assigned with a region code.

DVI (Digital Visual Interface)

DVI (digital visual interface) is a connection standard designed to transmit digital signals directly from a video source to a display device. In application, there are three types of DVI connectors. The DVI-D and DVI-A connectors carry digital and analog signal, respectively, while the DVI-I connector can accommodate both analog and digital signals.

G-Code® Programming System

A specially designed timer programming system introduced by Gemstar Development Corporation. With the programming system, users can schedule recordings simply by entering a set of numbers which correspond to a specific TV program, its broadcast channel and time. The system is marketed under different names around the world. G-Code® system is mainly used in Asia and Asia-Pacific regions.

(*G-Code® is a registered trademark of Gemstar Development Corp.)

HD DVD (High-Definition DVD)

Promoted by a group of companies led by Toshiba, the HD DVD (high-definition DVD) is a new-generation, high-capacity optical disc format. Utilizing a shorter-wavelength blue laser, the HD DVD offers a massive storage capacity of 15GB on a single-layer disc and 30GB on a double-layer disc, about three to four times the amount of current DVDs.

HDCP (High-bandwidth Digital Content Pro

HDCP is a protocol developed by Intel Corporation to protect digital content transmitted via HDMI/DVI interface. HDCP codes are used in both content signals and devices; HDCP-encrypted content can only be played on the devices which support the HDCP standard.

HDMI (High-Definition Multimedia Interfa

HDMI is an all-digital interface which transmits uncompressed high-definition video and multi-channel digital audio from any audio/video source to display devices via a single cable. HDMI is also backward-compatible with DVI (digital visual interface).

Interlaced / Progressive Scan

The two modes refer to the methods by which a video image is updated. In ‘Interlaced Scan' mode, image is updated by alternating sets of odd and even scan lines. In ‘Progressive Scan' mode, scan lines for an image are refreshed in every pass and by a sequential order.

JPEG (Joint Photographic Experts Group)

A popular file format for still image compression and storage. There are two sub-types of the JPEG formats: (1) Baseline JPEG: used for digital cameras, the web, etc. (2) Lossless JPEG: an old type, rarely used now.

Linear PCM (Pulse Code Modulation) Audio

Linear PCM is a method to digitally encode audio without compression, and is used for the audio tracks on DVD-Video discs, Audio CDs, etc.


An interactive option screen in video DVD, showing thumbnail images of various chapters in a video title. Users can select a particular chapter thumbnail, and start playback directly.


MP3 (MPEG-1 audio layer 3) is a compressed audio file format. Files are recognized by their file extension .mp3 or .MP3.

MPEG (Motion Picture Experts Group)

MPEG is an international standard for compressing digital video/audio content. In general, MPEG-1 is used for VCD and music. MPEG-2 is used for SVCD and DVD-Video. MPEG-4 is used for different forms of digital videos, such as DivX® films.

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