More aspects of quantisation noise associated with digital coding of colour-television signals

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More aspects of quantisation noise associated with digital coding of colour-television signals

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Errata or comment

An explanation is given for the origination of patterning effects in quantised colour-television pictures. The amplitude of the disturbance is calculated and related to CCIR protection ratios. The choice of a sampling frequency that is synchronised to the subcarrier frequency seems redundant for pulse-code-modulation coding systems with 8 bits per sample.

Inspec keywords: colour television; noise; digital signals; encoding; pulse-code modulation

Other keywords: coding; colour television; PCM; digital signals; quantisation noise; encoding

Subjects: Codes; Television and video equipment, systems and applications

References

    1. 1)
      • R.M. Dorward . Aspect of the quantisation noise associated with the digital coding of colour television signals. Electron. Lett. , 5 - 7
    2. 2)
      • 306, CCIR report, 1970, p. 116, book V2.
    3. 3)
      • P.F. Panter . , Modulation, noise and spectral analysis.
    4. 4)
      • `Pulse code modulation of videosignals: subjective study of coding parameters', 1971/40, British Broadcasting Corporation research department report, .
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Erratum: More aspects of quantisation noise associated with digital coding of colour-television signals