D-1 (Sony)

D1

Sony DVR-2000 D1 VCR
Media type	Magnetic Tape
Encoding	NTSC, PAL
Read mechanism	Helical scan
Write mechanism	Helical scan
Standard	Interlaced video
Developed by	Sony
Usage	Video production

BTS D1 VTR DCR500

D-1 is an SMPTE digital recording video standard, introduced in 1986 through efforts by SMPTE engineering committees. It started as a Sony and Bosch - BTS product and was the first major professional digital video format.

Format

D-1 stores uncompressed digitized component video, encoded at Y'CbCr 4:2:2 using the CCIR 601 raster format, along with PCM audio tracks as well as timecode on a 3/4 inch (19 mm) Videocassette tape. Uncompressed component video used enormous bandwidth for its time, and the D-2 system using composite video soon followed. The maximum record time on a D-1 tape is 94 minutes.

D-1 resolution is 720 × 480 for NTSC systems and 720 × 576 for PAL systems; these resolutions come from Rec. 601 and are also used in DVD-Video and Standard-definition television.

Panasonic's D-5 format has similar specifications, but was introduced much later.

Use

D-1 was notoriously expensive and the equipment required very large infrastructure changes in facilities which upgraded to this digital recording format.^{[citation needed]} Early D-1 operations were plagued with difficulties, though the format quickly stabilized and is still renowned for its superb standard definition image quality.^{[citation needed]}

Models

Sony

• DVR-1000
• DVR-2000
• DVR-2100

BTS

• DCR-100
• DCR-300
• DCR-500

References

Grotticelli, Michael, ed. (2001). American Cinematographer Video Manual. The ASC Press, Hollywood, CA. ISBN 0-935578-14-5

External links

• Sony History: The Beginning of the Digital Age