Data conversion method based on negative β-map
AssigneeJapan Science and Technology Agency
InventorsYoshihiko Horio, Kenya Jinno, Tohru Kohda, Kazuyuki Aihara
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Abstract
There is provided a data conversion method based on negative β-map suited for an A/D converter or chaos generator, that is adapted to an integrated circuit and capable of providing stable operation of the circuit. The data conversion method based on negative β-map includes a discrete time integrator 1 having an amplification coefficient s and a damping factor β, a quantizer 2 connected in series to the discrete time integrator 1, and a feedback circuit connected from an output of the quantizer 2 to an input of the discrete time integrator 1.
Claims20
An A/D converter for a data conversion method based on negative β-map comprising:
- a discrete time integrator;
- a quantizer Qθ(•) connected in series to the discrete time integrator;
- and
- a feedback circuit including a coefficient multiplier connected from an output of the quantizer Qθ(•) to an input of the discrete time integrator,
- wherein the A/D converter is configured to convert data using negative β-map, and wherein the discrete time integrator has an amplification coefficient s and a damping factor β, and the feedback circuit comprises a β coefficient multiplier and a logic inverter.
An A/D converter for a data conversion method based on negative β-map comprising:
- a discrete time integrator;
- a quantizer QθS(•) connected in series to the discrete time integrator;
- and
- a feedback circuit including a coefficient multiplier connected from an output of the quantizer QθS(•) to an input of the discrete time integrator,
- wherein the A/D converter is configured to convert data using negative β-map, and wherein the discrete time integrator has a damping factor β, and the feedback circuit comprises a β coefficient multiplier and a logic inverter.
An A/D converter for a data conversion method based on negative β-map comprising:
- a discrete time integrator;
- a quantizer Qθ(•) connected in series to the discrete time integrator;
- and
- a feedback circuit including a coefficient multiplier connected from an output of the quantizer Qθ(•) to an input of the discrete time integrator,
- wherein the A/D converter is configured to convert data using negative β-map, and wherein the discrete time integrator has an amplification coefficient s and a damping factor β, and the feedback circuit comprises a (β−1) coefficient multiplier.
An A/D converter for a data conversion method based on negative β-map comprising:
- a discrete time integrator;
- a quantizer QθS(•) connected in series to the discrete time integrator;
- and
- a feedback circuit including a coefficient multiplier connected from an output of the quantizer QθS(•) to an input of the discrete time integrator,
- wherein the A/D converter is configured to convert data using negative β-map, and wherein the discrete time integrator has a damping factor β, and the feedback circuit comprises a (β−1) coefficient multiplier.
Dependencies are inferred from the claim text.