Sony HVR-1500 User Manual

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Glossary
  
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Glossary
A/B roll editing
An editing method that uses two or 
more playback VCRs to create 
special effects such as dissolve and 
wipe, and uses one record VCR to 
record the results of the editing.
Using an editing control unit allows 
efficient control of the VCRs and 
very precise editing.
AES/EBU
A standard established jointly by the 
AES (Audio Engineering Society) 
and EBU (European Broadcasting 
Union) for serial transmission of 
digital audio. Two channels of audio 
can be transmitted via a single 
connector.
B-Y signal
A chrominance signal determined by 
subtracting the Y (luminance) signal 
from the B (blue) signal. One of the 
component signals.
Capstan
A drive mechanism that moves the 
tape at a specified speed. Its rotation 
normally synchronizes with a 
reference sync signal.
Chrominance signal
Color signal containing color 
information such as hue and 
saturation. Also called C signal.
Component signals (YRB)
A video signal consisting of a 
luminance signal (Y) and two 
chrominance signals (R-Y, B-Y).
Composite video signal
A video signal in which luminance 
and chrominance are combined along 
with timing reference “sync” 
information to make composite 
video.
Condensation
Condensation of moisture on the tape 
transport mechanisms of VCRs 
including the head drum. If moisture 
condenses on the head drum, the tape 
adheres to the drum and causes 
malfunction.
Down-conversion
The process of converting a high-
definition video signal to a lower 
resolution video signal. Together 
with the resolution conversion, the 
screen format (aspect ratio) is also 
converted.
Drop frame mode
SMPTE time code runs at 30 frames/ 
second, while the NTSC color 
television system runs at about 29.97 
frames/second. Drop-frame mode 
adjusts the running of time code to 
eliminate the discrepancy between 
time code value and actual time by 
dropping two frames from the time 
code value at the beginning of each 
minute except every tenth minute.
EBU timecode 
Timecode complying with the EBU 
(European Broadcasting Union) 
standard.
Edge cropping
Method of down-converting a 16:9 
HD signal to 4:3 video by cropping 
the side edges.
E-E mode
Electric-to-Electric mode. When you 
operate a VDR in E-E mode, input 
video and/or audio signals pass 
through electric circuits only and 
then come out from the output 
connectors, without passing through 
electromagnetic conversion circuits 
such as recording heads.
HD-SDI signal
Abbreviation of HD Serial Digital 
Interface. A signal in the HDTV 
serial interface defined by SMPTE 
292M.
HD tri-level sync
An HDTV analog reference signal 
that applies to 59.94/50Hz systems. 
A sync signal defined in SMPTE 
274M with positive, negative, and 
zero values.
Head drum
A metal cylinder to which a video 
head is attached. This drum is rotated 
at high speeds in synchronization 
with the sync signal during recording 
and playback.
Linear editing
Editing while playing back video and 
audio signals recorded on video tape.
See also “Non-linear editing.”
Loading
When being loaded, the tape is pulled 
out of the cassette case and threaded 
along the specified tape path and 
wrapped round the drum to be ready 
for recording or playback. Generally, 
this is done automatically when you 
place the cassette at the cassette 
entrance of the VCR. Also called 
threading.
Loop-through connection
A connection which allows a signal 
input to an input connector to pass 
through the unit and exit from an 
output connector as input to external 
equipment. Also called bridging 
connection.
Luminance signal
The signal that determines the 
brightness of the picture. Also called 
Y signal. One of the component 
signals.
MPEG-2
Abbreviation of Moving Picture 
Experts Group phase 2. A digital 
compression standard for video and 
audio, principally used for DVD