Apparatus for dynamic range enhancement
AssigneeDialog Semiconductor (UK) Limited
InventorsJoseph Hamilton, Fryderyk Fijalkowski
Life of this patent
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Abstract
An apparatus for dynamic range enhancement (DRE) which receives an input signal and provides a DRE output signal is presented. The apparatus has an error correction circuit to apply an error correction factor to the input signal such that the DRE output signal provided by the apparatus is dependent on the input signal and the error correction factor. The error correction factor is representative of an error generated by the apparatus.
Claims21
An apparatus configured to receive an input signal and to provide a DRE output signal, the apparatus comprising:
- an error correction circuit configured to apply an error correction factor to the input signal such that the DRE output signal provided by the apparatus is dependent on the input signal and the error correction factor;
- and:
- a (dynamic range enhancement) DRE-circuit comprising:
- i) an amplifier circuit configured to amplify the input signal;
- ii) a processing circuit configured to receive the input signal from the amplifier circuit and to process the input signal;
- and
- iii) an attenuation circuit configured to receive the input signal from the processing circuit, to attenuate the input signal and to provide the input signal as an output of the attenuation circuit:
- wherein:
- the error correction factor is representative of an error generated by the DRE apparatus;
- the DRE output signal corresponds to the input signal output by the attenuation circuit;
- and
- the input signal is adjusted by the error correction circuit based on the error correction factor prior to being output by the attenuation circuit as the DRE output signal.
A method of dynamic range enhancement (DRE) using an apparatus comprising an error correction circuit and a DRE circuit, the method comprising the steps of:
- receiving an input signal at the apparatus;
- applying an error correction factor to the input signal using the error correction circuit;
- amplifying the input signal using an amplifier circuit of the DRE circuit;
- receiving the input signal from the amplifier circuit using a processing circuit of the DRE circuit;
- processing the input signal using the processing circuit;
- receiving the input signal from the processing circuit using an attenuation circuit of the DRE circuit;
- attenuating the input signal using the attenuation circuit;
- and
- providing the input signal as an output of the attenuation circuit, the input signal output by the attenuation circuit corresponding to a DRE output signal;
- and
- wherein:
- the DRE output signal provided by the apparatus is dependent on the input signal and the error correction factor;
- the error correction factor is representative of an error generated by the apparatus;
- and
- the input signal is adjusted by the error correction circuit based on the error correction factor prior to being output by the attenuation circuit as the DRE output signal.
Dependencies are inferred from the claim text.