Fast a.d. convertor using a digital discriminator and a v.c.o.

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Fast a.d. convertor using a digital discriminator and a v.c.o.

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© The Institution of Electrical Engineers
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The letter suggests that a simple fast digital encoder can be formed from the combination of v.c.o. and digital discriminator, automatically eliminating the complex logic processes of conventional fast baseband a.d. convertors. The technique is suitable for encoding video signals to 8 bits.

Inspec keywords: variable-frequency oscillators; analogue-digital conversion; discriminators

Other keywords: voltage controlled oscillator; digital discriminator; fast A/D convertor; VCO

Subjects: A/D and D/A convertors; Oscillators; Modulators, demodulators, discriminators and mixers; Convertors

References

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      • R.N. Alcock . A digital directional finder. Philips Tech. Ret. , 226 - 230
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      • N.E. Goddard . Instantaneous frequency measuring receivers. IEEE Trans. , 292 - 293
    3. 3)
      • C.S. Aitchison , R.V. Gelsthorpe . A circuit technique for broadbanding the electronic tuning range of Gunn oscillators. IEEE J. Solid-State Circuits
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      • : 7013/77, , Provisional Patent Specifications.
    5. 5)
      • Myers , Cummings . Theoretical response of a polar display instantaneous frequency meter. IEEE Trans. , 38 - 48
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