Справочник Пользователя для Sony HVR-1500

104

Glossary

  

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video and digital television 
transmission, it maintains high image 
quality while achieving high 
compression ratios, using predictive 
techniques for capturing motion.

A mode of advancing timecode 
which ignores the difference in frame 
values between real time and the 
timecode. Using this mode produces 
a difference of approximately 86 
seconds per day between real time 
and timecode, which causes 
problems when editing programs in 
units of seconds using the number of 
frames as a reference.

Editing while playing back video and 
audio signals recorded on hard disks.
Video scenes stored on disk can be 
cued up quickly, for increased editing 
efficiency. See also “Linear editing.”

This is an audio signal represented by 
pulse code modulation. The analog 
audio signal is first broken down into 
a sequence of pulses, and these are 
then represented digitally.

Running of a video tape to a prior to 
an edit-start point to enable the tape 
to reach a steady speed and to be 
synchronized with other video tapes.

A chrominance signal determined by 
subtracting the Y (luminance) signal 
from the R (red) signal. One of the 
component signals.

A video signal consisting of a sync 
signal or sync and burst signals, used 
as a reference.

Specifications by the American 
Society of Motion Picture and 

Television Engineers (SMPTE) for 
transmitting control codes and 
timecode in the ancillary data space 
of digital television signals

SD Serial Digital Interface. An 
interface standardized as SMPTE 
259M which enables the 
transmission of an uncompressed 
digital component stream.

The difference between the reference 
black level and the blanking level of 
a composite signal.

Abbreviation of Society of Motion 
Picture and Television Engineers, a 
professional association established 
in the USA.

Signal-to-Noise ratio. The relation of 
the strength of the desired signal to 
the accompanying electronic
interference, the noise. If S/N is high, 
sounds are reproduced with less noise 
and pictures are reproduced clearly 
without snow.

A VCR operating mode used when 
searching for specific scenes, by 
viewing the video output or timecode 
values while playing back the tape at 
various speeds in forward or reverse 
direction.

Synchronizing the drum rotation 
phase and tape transport phase with a 
reference signal during playback and 
recording so that the video heads scan 
the tape in the same pattern during 
playback and recording.

One of two conditions in the stop 
mode. The drum does not rotate and 
tape is slackened. There is no damage 

to the video heads and the tape, but 
the VCR is not ready for immediate 
recording or playback.

One of two conditions in the stop 
mode. The drum is rotating and the 
tape is wrapped round the drum. The 
VCR is ready for recording or 
playback, so a still picture can be 
obtained.

A sine wave imposed on the 
luminance portion of a video signal 
and modulated to carry color 
information. Its amplitude represents 
color saturation and its phase 
represents hue.

To put a set of characters onto a 
picture so that both can be seen at the 
same time.

Method of down-converting a 16:9 
HD signal to 4:3 video by 
compressing the image horizontally.

A signal format in which Y 
(luminance) and C (chrominance) 
signals are separated to reduce 
interference between them so that 
noiseless images are reproduced.

A reference signal consisting of 
vertical and horizontal sync signals 
used for synchronizing the scanning 
patterns of the video camera and the 
monitor.

Abbreviation of Time Base 
Corrector. Electronic circuits to 
electrically stabilize the playback 
signals by removing color variation 
and roll in the playback picture 
caused by irregularity in drum 
rotation and tape movement. Time