The Time code reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Time code

A time code is a sequence of numeric codes generated at regular intervals by a timing system. Time codes are used extensively for synchronization.

'SMPTE time code' family of timecodes used in film, video and audio production:

• Linear timecode
• Vertical interval timecode
• Burnt-in timecode
• MIDI timecode
• AES-EBU embedded timecode

Other related time and sequence codes:

• Keykode

Time codes for purposes other than video and audio production:

• IRIG time codes Used for military, government and commercial purposes.

See also:

• Global Positioning System
• Network time protocol
• Time signal

See also:

• Jam sync

References:

• 'Timecode: A user's guide, second edition' by John Ratcliff, [Focal Press]
• 'A Technical Introduction to Digital Video' by Charles Poynton

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