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SMPTE RP 175:1997
[WITHDRAWN]

Digital Interface for 4:4:4:4 Component Video Signals (Dual Link)

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Recommended Practice (RP)
Pages
1–8
Abstract
NOTE: This Recommended Practice has been withdrawn. The information contained in it, with updates, has been incorporated into SMPTE ST 125:2013. — This practice describes a means of interconnecting digital video equipment operating in system M (525/60) and complying with the 4:4:4 sampling and encoding parameters defined in ITU-R BT.601, annex 1, with a nominal sampling frequency of 13.5 MHz. Provision is made to carry a fourth, auxiliary, channel as part of the signal multiplex, yielding 4:4:4:4 (or 4×4) overall. — The interface is primarily defined to convey signals having luminance, color-difference, and auxiliary components. Signals having green, red, blue, and auxiliary components may alternatively be conveyed, as described in clause 6. — This is a 10-bit interface, however, provision has been made to interconnect all signals with 8- or 10-bit precision. — The interface consists of two unidirectional interconnections between one device and another. These interconnections carry the data corresponding to the television signal and associated data. — The two interconnections are referred to as link A and link B. Each link shall conform separately to the transmission standards and protocols described in either ANSI/SMPTE 125M or ANSI/SMPTE 259M. — Link A carries all the main channel luminance samples plus those C<inf>B</inf> and C<inf>R</inf> samples which are located at even-numbered sample points. — Link B contains the samples of the auxiliary channel (most commonly used for, but not restricted to, key signal information) and the C<inf>B</inf> and C<inf>R</inf> samples from the odd-numbered sample points. — NOTE – Although it is common to refer to link A as 4:2:2 and link B as 2:2:4, it must be noted that link A is not a true 4:2:2 signal because the color-difference data it contains were sampled at 13.5 MHz to obtain a 4×4 signal, rather than at 6.75 MHz as specified in ANSI/SMPTE 125M. Therefore, if an attempt is made to use link A as a conventional 4:2:2 signal, there will be aliasing in the subsampled color-difference signals. This quasi-4:2:2 channel could be used for noncritical monitoring, but the full 4×4 signal should be correctly filtered and subsampled before critical use.
Release Tag
19971205-pub
Publication Date
1997-12-05
Approval Date
1997-12-05
Withdrawn Date
2014-07-14
Status Note
NOTE: This Recommended Practice has been withdrawn. The information contained in it, with updates, has been incorporated into SMPTE ST 125:2013.
DOI
10.5594/SMPTE.RP175.1997
ISBN
978-1-61482-189-2
Link
https://doi.org/10.5594/SMPTE.RP175.1997
Group
SMPTE 32NF Network/Facilities Infrastructure
Keyword(s)
Communication, Networking and Broadcast Technologies, Interfaces, Television
ICS Codes
33.160.01 Audio, video and audiovisual systems in general
33.170 Television and radio broadcasting
Copyright
© 1997 Society of Motion Picture and Television Engineers, Inc.
Withdrawl notice: https://pub.smpte.org/doc/rp175/rp0175-Withdrawal-Statement-2014-07-14.pdf

Document Versions — SMPTE RP 175

Normative Reference(s)

Bibliographic Reference(s)

  • ITU-R BT.601.7 [Active]
  • R-REC-BT.799-2 — ITU-R BT.799-2, Interfaces for Digital Component Video Signals in 525-Line and 625-Line Television Systems Operating at the 4:4:4 Level of ITU-R BT.601 (Part A). EXTERNAL
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SMPTE RP 175:1997, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175.1997
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SMPTE RP 175:1997, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175.1997
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SMPTE RP 175, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175
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SMPTE RP 175, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175

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SMPTE RP 175:1997, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175.1997
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<span class="citation"><cite>SMPTE RP 175:1997</cite>, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at <a href="https://doi.org/10.5594/SMPTE.RP175.1997" target="_blank" rel="noopener">https://doi.org/10.5594/SMPTE.RP175.1997</a></span>
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SMPTE RP 175, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at https://doi.org/10.5594/SMPTE.RP175
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<span class="citation"><cite>SMPTE RP 175</cite>, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link). Available at <a href="https://doi.org/10.5594/SMPTE.RP175" target="_blank" rel="noopener">https://doi.org/10.5594/SMPTE.RP175</a></span>

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SMPTE RP 175:1997, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link)
doi: 10.5594/SMPTE.RP175.1997
url: https://doi.org/10.5594/SMPTE.RP175.1997
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<li>
<cite id="bib-smpte-rp175-1997">SMPTE RP 175:1997</cite>, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link)
<span class="doi">10.5594/SMPTE.RP175.1997</span>
</li>
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Preview:
SMPTE RP 175, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link)
doi: 10.5594/SMPTE.RP175
url: https://doi.org/10.5594/SMPTE.RP175
Snippet:
<li>
<cite id="bib-smpte-rp175">SMPTE RP 175</cite>, Digital Interface for 4:4:4:4 Component Video Signals (Dual Link)
<span class="doi">10.5594/SMPTE.RP175</span>
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