JVC GR-DVM70U Instruction Manual - Page 7

ABOUT DV 7 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. VIDEO Lens Luminance Signal (Y) Color Difference Signal (R-Y) Chrominance (C) Chromatic Analysis AUDIO Mic Color Difference Signal (B-Y) A/D conversion A/D conversion A/D conversion A/D conversion Signal compression Recording by rotating head helical scan This camcorder separates the data into blocks, writing one block of each data type on each track of the tape. Tape direction Sub-Code Area Video Area 5.24 mm / 1/5" 6.35 mm / 1/4" Head tracking direction 10 tracks/frame Audio Area ITI Area 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. 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.