SMPTE Journal ( Volume: 85, Issue: 3, March 1976)
[ACTIVE]
Digital Time-Base Correction for Video Signal Processing
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPTE
- Volume
- 85, No. 3, pp. 146–150
- Abstract
- Recent advances in digital television are exemplified in the techniques now available for processing and correcting the errors that arise when videotape is played back with a VTR. Such techniques use time-base correctors (TBCs) in systems for eliminating VTR distortions. A short history of time-base correction is given, from the delay-line units used 20 years ago with quadruplex VTRs to the latest digital TBCs that can reduce large time-base errors of helical-scan VTRs virtually to invisibility. Principles and details of the Microtime 640 Digital TBC are discussed. Briefly, it operates in either the V/H-lock or no-lock mode. Either direct or heterodyne color recovery can be selected. The input signal is sampled at three times the color subcarrier frequency, and 8-bit PCM encoding is used. For speed and simplicity of control, the Model 640 employs a bipolar random-access memory (RAM) of about 24-kbit capacity. Such TBCs can now interface with virtually any VTR, and their use is expected to grow steadily.
- Publication Date
- 1976-03-01
- DOI
10.5594/J06852- ISSN
- Print:
0036-1682 - Link
- https://doi.org/10.5594/J06852
- Author(s)
- David E. AckerTelevision Microtime, Inc., (a subsidiary of Andersen Laboratories, Inc.), 1280 Blue Hills Avenue, Bloomfield, CT 06002Richard H. McleanTelevision Microtime, Inc., (a subsidiary of Andersen Laboratories, Inc.), 1280 Blue Hills Avenue, Bloomfield, CT 06002
- Copyright
- © 1976 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- PCM NTSC Television Characteristics [Active]
- IEEE Trial-use Standard 511-1974 on the Measurement of Linear Waveform Distortion in Video Signal Transmission [Active]
- Sub-Nyquist-Encoded PCM NTSC Color Television [Active]
- Differential Phase and Gain Measurements in Digitized Video Signals [Active]
- Principles of Digital Television Simplified [Active]
- Digital Video Recording for Television Broadcasting [Active]
Source Data (JSON)
Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J06852.json
Reference Tree
Explore all references and references to this document, as a navigable tree.
Open Reference TreeReference this Doc
Plain text (ISO 690 compliant)
Preview:
David E. Acker and Richard H. Mclean; Digital Time-Base Correction for Video Signal Processing, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J06852
Snippet:
David E. Acker and Richard H. Mclean; Digital Time-Base Correction for Video Signal Processing, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J06852
HTML (ISO 690 compliant)
Preview:
David E. Acker and Richard H. Mclean; Digital Time-Base Correction for Video Signal Processing, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J06852
Snippet:
<span class="citation">David E. Acker and Richard H. Mclean; <cite>Digital Time-Base Correction for Video Signal Processing</cite>, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976. Available at <a href="https://doi.org/10.5594/J06852" target="_blank" rel="noopener">https://doi.org/10.5594/J06852</a></span>
SMPTE's HTML Pub
Preview:
David E. Acker and Richard H. Mclean; Digital Time-Base Correction for Video Signal Processing, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976
doi: 10.5594/J06852
url: https://doi.org/10.5594/J06852
doi: 10.5594/J06852
url: https://doi.org/10.5594/J06852
Snippet:
<li> David E. Acker and Richard H. Mclean; <cite id="bib-10-5594-j06852">Digital Time-Base Correction for Video Signal Processing</cite>, SMPTE Journal ( Volume: 85, Issue: 3, March 1976); SMPTE, 1976 <span class="doi">10.5594/J06852</span> </li>