8ENABOUTDV

The digital video camera 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

Luminance Signal (Y)

Lens

 

 

 

Color Difference

 

 

 

Signal (R-Y)

Chrominance (C)

 

 

 

 

 

 

Chromatic

 

 

 

 

 

 

 

 

Analysis

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO

 

Color Difference

 

Signal (B-Y)

Mic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A/D

conversion

A/D

conversion

A/D

conversion

A/D

conversion

Recording by rotating head helical scan

Signal

compression

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

Audio Area

ITI Area

Head tracking direction

5.24 mm / 1/5"

6.35 mm / 1/4"

10 tracks/frame

1Sub-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 weren’t displayed while recording.

2Video Area

3Audio Area

The digital audio signal is recorded here.

4ITI (Insert and Tracking

Information) Area

Insert editing and post-recording editing tracking signals are recorded here.

The digital video signal is recorded here.

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JVC GR-DVX manual Sub-Code Area, Video Area Audio Area, ITI Insert and Tracking Information Area

GR-DVX specifications

The JVC GR-DVX is a compact and versatile MiniDV camcorder that gained popularity in the early 2000s for its combination of high-quality video capture, user-friendly interface, and innovative features. This camcorder is a testament to JVC's commitment to advancing imaging technology while providing value to both amateur videographers and seasoned professionals.

One of the standout features of the JVC GR-DVX is its 680,000-pixel CCD sensor, which offers superior image quality. This sensor allows users to capture clear and vibrant images, whether shooting in bright daylight or low-light conditions. The MiniDV format enables the camcorder to record high-resolution video, producing sharp images with natural colors and excellent detail.

The GR-DVX also boasts a powerful 16x optical zoom lens, providing videographers with the ability to capture subjects at a distance without sacrificing image quality. This is complemented by a 100x digital zoom option, allowing further flexibility in storytelling. The lens features a wide f-stop ranging from f/1.6 to f/3.1, enabling better performance in varying lighting conditions.

With an eye towards ease of use, the camcorder includes a 3.5-inch vari-angle LCD screen that facilitates various shooting angles and compositions. This versatile screen allows users to easily frame their shots, while the intuitive menu system simplifies navigation through settings. Additionally, the built-in image stabilization technology helps reduce blurriness caused by hand movements, ensuring that recordings are smooth and stable.

The JVC GR-DVX comes equipped with various connectivity options, including FireWire (IEEE 1394) for fast digital transfer of video to a computer or editing suite. This feature enhances the editing workflow, allowing users to seamlessly transition from recording to post-production.

Furthermore, the camcorder supports a variety of shooting modes, including night mode and various manual settings, which give users the control to tailor their filming experience. It also offers built-in digital effects and transitions to enhance creativity in video projects.

In summary, the JVC GR-DVX is a well-rounded camcorder that combines effective imaging technology, versatile shooting capabilities, and user-friendly features. Its robust design, high-quality imaging, and comprehensive connectivity options make it a valuable tool for anyone looking to capture impactful video content.