About Dv - JVC GR-DVM50 Instructions Manual

6
EN
The digital camcorder converts incoming audio and video signals into digital form for recording.
A video signal is composed of a luminance signal (Y) and color signals (R-Y and B-Y). These signals are
identified and recorded digitally (Digital Component Recording). The A/D (Analog to Digital) converter
samples the Y signal at 13.5 MHz, and R-Y and B-Y at 3.375 MHz, and changes them to an 8-bit quantum
signal.
Sound sampled at 48 kHz is changed to a 16-bit quantum signal, and sound sampled at 32 kHz is converted to
a 12-bit signal.
NOTE:
The data recorded on a tape is digital, but the output of this camcorder is analog.
VIDEO
Lens
Chrominance (C)
AUDIO
Mic
This camcorder separates the data into blocks, writing one block of each data type on each track of the tape.
Head tracking direction
1
Sub-Code Area
The Time Code and Date/Time data are
written here, separate from the video data.
This enables you to display the date and
time during playback, even if they were
not displayed while recording.
2
Video Area
The digital video signal is recorded here.
Luminance Signal (Y)
Color Difference
Signal (R-Y)
Chromatic
Analysis
Color Difference
Signal (B-Y)
10 tracks/frame
A/D
conversion
A/D
conversion
A/D
conversion
A/D
conversion
Tape direction
Sub-Code Area
Video Area
Audio Area
3
Audio Area
The digital audio signal is recorded here.
4
ITI (Insert and Tracking
Information) Area
Insert editing and post-recording editing
tracking signals are recorded here.

ABOUT DV

Recording by
rotating head
helical scan
Signal
compression
ITI Area