Glossary, Jpeg | Philips SPF1027/05 specification

9 Glossary

Aspect ratio

Aspect ratio refers to the length to height ratio ofTV screens.The ratio of a standardTV is 4:3, while the ratio of a high-deﬁ nition or wideTV is 16:9.The letter box allows you to enjoy a picture with a wider perspective on a standard 4:3 screen.

JPEG

A very common digital still picture format.A still-picture data compression system proposed by the Joint Photographic Expert Group, which features small decrease in image quality in spite of its high compression ratio. Files are recognized by their ﬁ le extension ‘.jpg’ or ‘.jpeg.’

Kensington lock

A Kensington Security Slot (also called a K-Slot or Kensington lock). Part of an anti-theft system. It is a small, metal-reinforced hole found on almost all small or portable computer and electronics equipment, particularly on expensive and/or relatively light ones, such as laptops, computer monitors, desktop computers, gaming consoles, and video projectors. It is used for attaching a lock-and-cable apparatus, in particular those from Kensington.

Memory Stick

Memory Stick.A ﬂ ash memory card for digital storage on cameras, camcorders and other handheld devices.

MMC Card

MultiMedia Card.A ﬂ ash memory card that provides storage for cellphones, PDAs and other handheld devices.The card uses ﬂ ash memory for read/write applications or ROM chips (ROM-MMC) for static information, the latter widely used for adding applications to a Palm PDA.

SD Card

Secure Digital Memory Card.A ﬂ ash memory card that provides storage for digital cameras, cellphones and PDAs. SD Cards use the same 32 x 24mm form factor as the MultiMediaCard (MMC), but are slightly thicker (2.1mm vs.

1.4mm), and SD Card readers accept both formats. Cards up to 4GB are available.

xD Card

EXtreme Digital Picture Card.A ﬂ ash memory card used in digital cameras.

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