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DV on magnetic tape uses helical scan, which wraps the tape around a tilted, rotating head drum with video heads mounted to it. As the drum rotates, the heads read the tape diagonally. DV, DVCAM and DVCPRO use a 21.7 mm diameter head drum at 9000 rpm. The diagonal video tracks read by the heads are 10 microns wide in DV tapes. [15] [24]
Sony Handycam DCR-IP7BT MICROMV camcorder and Sony MICROMV tape (top), compared with MiniDV and Hi8 tapes. DV (1995): Initially developed by Sony, the DV standard became the most widespread standard-definition digital camcorder technology for the next decade. [citation needed] Users could connect their DV camcorders to their computers, using 4 ...
MiniDVD or 8 cm DVD (also "3 inch DVD") is a DVD disc with a reduced diameter of 8 centimetres (3.15 in). It has been most commonly used in camcorders due to its compact size. [1]
The Sony DCR-VX1000 was a DV camcorder released by Sony in 1995. [1] It was the first to use both the MiniDV tape format and three-CCD color processing technology—boasting twice the horizontal resolution of VHS and triple the color bandwidth of single-CCD cameras.
The Sony HDR-HC5, introduced in May 2007 (MSRP $1099 US), was the third DV tape HDV CMOS camcorder to support 1080i. The 1 ⁄ 3 in (8.5 mm) CMOS sensor has a resolution of 2MP and interlaced 4MP for digital still pictures and captures video at 1440×1080 interlaced.
It is the smallest videotape format — 70% smaller than MiniDV or about the size of two US quarter coins; it is also smaller than a Digital8 or DV cassette and slightly smaller than an audio microcassette. It was the first helical scan tape system using MR read head introduced to the market. Each cassette can hold up to 60 minutes of video.
Digital8 machines run tape at 29 mm per second, faster than baseline DV (19 mm/s) and comparable to professional DV formats like DVCAM (28 mm/s) and DVCPRO (34 mm/s). A 120-minute 8-mm cassette holds 106 m of tape and can store 60 minutes of digital video. A standard DVCPRO cassette holds 137 m of tape, good for 66 minutes of video.
Video8 was the earliest of the three formats, and is entirely analog. The 8mm tape width was chosen as smaller successor to the 12mm Betamax format, using similar technology (including U-shaped tape loading) [16] but in a smaller configuration in response to the small configuration VHS-C compact camcorders introduced by the competition. It was ...
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