Table of Contents
Advertisement
1-2 Features
1-2 Features
1-2-1 Digital BETACAM Format
Tape format
1-2
Chapter 1 Overview
The DVW-522/522P adopts the newly developed Digital BETACAM
format as an extension of the BETACAM/BETACAM SP format. The
Digital BETACAM format makes the best of the available recording area
to achieve high-quality digital recording while keeping analog BETACAM
tape playback compatibility. The following are developed for this purpose:
• Coefficient recording system
• Powerful error correction system
• High-quality precision heads and drum with dynamic tracking (DT) heads
• New automatic tracking system
These enable 120 minutes or more of playback time with Digital
BETACAM (when using L-size cassettes), while the cassette size of the
Digital BETACAM is exactly same as the normal BETACAM and
BETACAM SP.
Note
The DVW-522/522P is designed exclusively for playing back digitally
recorded video cassette tapes.
The video and four-channel audio signals of each field are recorded onto
the tape with six helical tracks, using a slightly slower tape speed and three
times faster drum rotation speed than the conventional BETACAM and
BETACAM SP formats.
The Digital BETACAM format has three longitudinal tracks: a CTL track,
a time code (LTC) track and a cue audio track, identical to the
conventional BETACAM and BETACAM SP format.
However, the conventional audio channel-1 track is deleted and used for
expansion of the helical tracks. The larger drum diameter enables optimum
digital recording, while analog BETACAM playback compatibility is
maintained by specially developed time base corrector circuits.
Advertisement
Table of Contents
