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RQT7751
Formatting
Formatting is the process of making media such as DVD-RAM
recordable on recording equipment.
You can format the HDD, DVD-RAM and memory cards on this unit.
Formatting erases irrevocably all contents.
Frames and fields
Frames refer to the single images that constitute the video you see
on your television. Each frame consists of two fields.
≥
A frame still shows two fields, so there may be some blurring, but
picture quality is generally better.
≥
A field still shows less picture information so it may be rougher, but
there is no blurring.
Gateway
IP address of the electronic device providing Internet access.
Usually called a router IP address. (e.g., 192.168.0.1)
HDD (Hard disk drive)
This is a mass data storage device used in computers etc. A disk
with a surface that has been treated with magnetic fluid is spun and
a magnetic head is brought in close proximity to facilitate the reading
and writing of large amounts of data at high speed.
Hub
Used for connecting more than one device to the network.
IP address
A set of numbers which distinguish each computer on the network
when, for example, connected to the Internet. When using a
computer in a LAN (
➡
below) to access a computer or device not
part of the LAN, the IP address is called the local IP address. (e.g.,
192.168.0.10)
JPEG (Joint Photographic Experts Group)
This is a system used for compressing/decoding colour still pictures.
If you select JPEG as the storage system on digital cameras etc.,
the data will be compressed to 1/10–1/100 of its original size. The
feature of JPEG is less deterioration in picture quality considering
the degree of compression.
LAN (Local Area Network)
A group of linked devices in a company, school or home. Indicates
the boundaries of a particular network.
LPCM (Linear PCM)
These are uncompressed digital signals, similar to those found on
CDs. LPCM sound is available when recording in XP mode.
MAC (Media Access Control) address
Address assigned to each device connected to the network to allow
it to be recognized.
MP3 (MPEG Audio Layer 3)
An audio compression method that compresses audio to
approximately one tenth of its size without any considerable loss of
audio quality. You can play MP3 you have recorded onto CD-R and
CD-RW.
MPEG2/MPEG4 (Moving Picture Experts Group)
A standard for efficiently compressing and expanding color video.
MPEG2 is a compression standard used for DVD and satellite based
digital broadcasting. This unit records programmes using MPEG2.
MPEG4 is a compression standard created for use with mobile
equipment and use over networks, providing highly efficient
recordings even with low bit rates.
Pan&Scan/Letterbox
In general, DVD-Video are produced with the intention that they be
viewed on a widescreen television (16:9 aspect ratio), so images
often don’t fit regular (4:3 aspect ratio) televisions. Two styles of
picture, “Pan & Scan” and “Letterbox”, deal with this problem.
Pan & Scan: The sides are cut off so the picture
fills the screen.
Letterbox: Black bands appear at the top and
bottom of the picture so the picture
itself appears in an aspect ratio of
16:9.
Playback control (PBC)
If a Video CD has playback control, you can select scenes and
information with menus.
(This unit is compatible with version 2.0 and 1.1.)
Progressive/Interlace
The PAL video signal standard has 625 (or 576) interlaced (i) scan
lines, whereas progressive scanning, called 625p (or 576p), uses
twice the number of scan lines. For the NTSC standard, these are
called 525i (or 480i) and 525p (or 480p) respectively.
Using progressive output, you can enjoy the high-resolution video
recorded on media such as DVD-Video.
Your television must be compatible to enjoy progressive video.
Panasonic televisions with 625 (576)/50i · 50p, 525 (480)/60i · 60p
input terminals are progressive compatible.
Protection
You can prevent accidental erasure by setting writing protection or
erasure protection.
Router
Distinguishes the IP address assigned to each device, such as the
computer, and relays the flow of data within the network.
Sampling frequency
Sampling is the process of converting the heights of sound wave
(analog signal) samples taken at set periods into digits (digital
encoding). Sampling frequency is the number of samples taken per
second, so larger numbers mean more faithful reproduction of the
original sound.
Subnet mask
Enables efficient network use. A set of numbers which identify which
part of the IP address allocated to every device connected to the
router is the network portion.
TCP/IP (Transmission Control Protocol/Internet Protocol)
These are the standard protocols for sending and receiving data.
Thumbnail
This refers to a miniature representation of a picture used to display
multiple pictures in the form of a list.
TIFF (Tag Image File Format)
This is a system used for compressing/decoding colour still pictures.
A common format for storing high quality images on digital cameras
and other devices.
VBR (Variable bitrate)
This is a method of video recording that adjusts the bit rate
according to video signal.
u
r
Frame
Field
Field
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