58
also uses an interframe coding technique, which further compresses the video data by encoding only the differences in the images between key frames.
PCM - (Pulse Code Modulation) A technique for converting analog signals into digital form.
Sampling Rate - In Pulse Code Modulation, the rate or frequency at which samples are taken when analog signals are converted into digital code. For example, audio that is encoded for music CDs is sampled at a frequency of
44.1KHz (KiloHertz), which means 44,056 samples are taken per second. Each sample taken is “quantized” or converted into a
Speech Enhancer - Audio technology that enhances certain frequencies, to increase clarity of dialogue, especially when the volume is low.
TFT LCD (Thin Film Transistor LCD) - Known as "active matrix", TFT LCDs have transistors built into each pixel within the screen. For example, a 480 x 234 color screen requires 336,960 transistors; one for each red, green and blue dot. TFT LCDs pro- vide a sharp, clear image with excellent con- trast.
Video CD - A CD format used to hold full- motion video, developed by Matsushita, Philips, Sony and JVC. A VCD holds 74 minutes of
Track - The storage channel on a disk. Tracks are concentric circles. CD and DVD tracks have one continuous,