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Title: Digital display circuit displayable in analog fashion

Abstract: A display circuit for displaying analog input voltages in a digital fashion using a parallel comparison type analog-digital converter includes a voltage generator for generating a plurality of reference voltages quantized at a predetermined voltage width, a plurality of comparators corresponding to the plurality of reference voltages for comparing the reference voltages and an analog input voltage as input, and display means for encoding and displaying the output of the plurality of comparators, is provided with modulating apparatus for modulating one of the inputs of each of the plurality of comparators periodically within the range of the predetermined voltage width.


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Inventors: Maida, Osamu (Tokyo, JP)

Application Number: 06/176579
Filing Date: 1980-08-08
Publication_date: 1982-12-21
Assignee: NIPPON KOGAKU KK

Primary Class(es): 341/159 396/295, 396/289
Other Classes: G01R13/02; G01R19/257; H03M1/00; G01R13/00; G01R19/25; H03K13/175
US Patent Ref:
3275871September, 1966Yiotis340/753Display apparatus
3302040January, 1967Dryden328/183Linear sawtooth voltage-wave generator employing transistor timing circuit having capacitor-zener di
3440637April, 1969Molnar et al.340/753SOLID STATE DISPLAY WITH ELECTRONIC DRIVE CIRCUITRY INCLUDING FEEDBACK CONTROL
3653029March, 1972Kuhlmann340/347ADANALOGUE TO DIGITAL CONVERTER
3656152April, 1972Gundersen340/347ADIMPROVED A-D/D-A CONVERTER SYSTEM
3723762March, 1973Nakaya328/184SAW-TOOTH WAVE GENERATORS
3838413September, 1974Wehrmann328/59CIRCUIT ARRANGEMENT FOR ANALOG-TO-DIGITAL CONVERSION OF MAGNITUDES OR SIGNALS IN ELECTRICAL FORM
3877022April, 1975Lehman et al.340/347ADEnhancing resolution in analog-to-digital conversion by adding statistically controlled noise to the analog input signal
3879724April, 1975McDonald340/347ADIntegrating analog to digital converter
3914758October, 1975Ingle340/756Digital readout for displaying both long term and short term average values of a signal
3949170April, 1976Shionoya340/347ADSignal transmitting system including A-D and D-A converters
3976869August, 1976Stella et al.364/730Solid state resolver coordinate converter unit
3990799November, 1976Nanba et al.354/60LDigital exposure meter
4074292February, 1978Nakamoto et al.354/60LSystem for indicating photographic information

Other Refs:
Primary Examiner: Sloyan, Thomas J.
Assistant Examiner:
Attorney: Fitzpatrick, Cella, Harper & Scinto
Parent Case Data:

This is a division of application Ser. No. 907,210, filed May 18, 1978 abandoned.