A/D converting apparatus and image sensing apparatus

Details A/D converting apparatus and image sensing apparatus A/D converting apparatus and image sensing apparatus

1993-12-02

1997-11-25

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358456, 358518, 341120, 341131, 348674, H04N 140, H03M 120

Patent

active

056918216

ABSTRACT:
A low-cost A/D converting apparatus having a high precision includes a first A/D converter to which an analog input signal is applied as an input, a plurality of D/A converters to which an output from the first A/D converter is applied as an input, a subtractor for subtracting at least one output of outputs of the plurality of D/A converters from the analog input signal, and a second A/D converter, to which an output from the subtractor is applied as an input, having a resolution higher than a resolution of the first A/D converter.

REFERENCES:
patent: 4901152 (1990-02-01), Hidea et al.
patent: 4912470 (1990-03-01), Hosotani
patent: 5001556 (1991-03-01), Nakamura
patent: 5103299 (1992-04-01), Asaida
patent: 5157498 (1992-10-01), Suga et al.
patent: 5221963 (1993-06-01), Hashimoto et al.
patent: 5394250 (1995-02-01), Shono
patent: 5457494 (1995-10-01), Suga

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