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ABOUTDV

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 colour signals (R-Y and B-Y). These signals are identified and recorded digitally (Digital Component Recording). The A/D (Analogue to Digital) converter samples the Y signal at 13.5 MHz, and R-Y and B-Y at 6.75 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 analogue.

VIDEO

Luminance Signal (Y)

Lens

 

 

 

 

Colour Difference

 

 

 

 

Signal (R-Y/B-Y)

 

 

 

 

 

Chrominance (C)

 

 

Chromatic

 

AUDIO

Analysis

 

 

 

 

 

 

 

 

 

 

 

Mic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

Head trackingITI Area direction

5.24 mm

6.35 mm

12 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-DVF7, LYT0278-001A manual About DV
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GR-DVF7, LYT0278-001A specifications

The JVC LYT0278-001A, also known as the GR-DVF7, is a compact yet powerful digital camcorder renowned for its innovative features and user-friendly design. This camcorder is designed to cater to both amateur and semi-professional videographers, delivering high-quality video capture along with a host of functionality.

One of the standout features of the GR-DVF7 is its 1/4-inch progressive scan CCD sensor. This technology allows for improved light sensitivity, enabling users to capture clear and vibrant footage even in low-light conditions. This makes it an ideal choice for recording events such as weddings or indoor activities, where lighting can often pose a challenge. Additionally, the camcorder supports a maximum resolution of 800x600 pixels, producing crisp images with fine detail.

The GR-DVF7 offers a 10x optical zoom, allowing users to get close to the action without sacrificing image quality. This is complemented by a digital zoom feature, which further enhances the zoom capabilities, albeit with some trade-off in clarity at higher magnifications. The combination of optical and digital zoom makes this camcorder versatile for various filming situations, from capturing distant landscapes to intimate moments.

In terms of audio quality, the JVC GR-DVF7 is equipped with a built-in stereo microphone, ensuring that sound capture is as clear and balanced as the visuals. Furthermore, this camcorder features an easy-to-use interface with a large LCD display, which swivels for flexibility during shooting and playback. The interface is intuitive, allowing users to adjust settings quickly and easily, ensuring that they can focus on capturing the moment.

The device is designed for portability, with a lightweight build that makes it comfortable to hold during extended periods of shooting. It also supports various recording formats, providing flexibility in how footage is stored and shared. The battery life is commendable, allowing users to film for longer without needing to recharge, which is crucial for events that last several hours.

Overall, the JVC LYT0278-001A, GR-DVF7 stands out in the digital camcorder market for its balance of advanced technology, user-centric design, and high-quality performance. Whether capturing memories or producing content, this camcorder remains a reliable choice for videographers looking for an efficient and effective filming solution.
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