GB1405418A - Digital instruments - Google Patents

Digital instruments

Info

Publication number
GB1405418A
GB1405418A GB5427871A GB5427871A GB1405418A GB 1405418 A GB1405418 A GB 1405418A GB 5427871 A GB5427871 A GB 5427871A GB 5427871 A GB5427871 A GB 5427871A GB 1405418 A GB1405418 A GB 1405418A
Authority
GB
United Kingdom
Prior art keywords
count
counter
flip
gates
nov
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5427871A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gemalto Terminals Ltd
Original Assignee
Solartron Electronic Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solartron Electronic Group Ltd filed Critical Solartron Electronic Group Ltd
Priority to GB5427871A priority Critical patent/GB1405418A/en
Publication of GB1405418A publication Critical patent/GB1405418A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/10—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for switching-in of additional or auxiliary indicators or recorders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/39—Scanning a visible indication of the measured value and reproducing this indication at the remote place, e.g. on the screen of a cathode ray tube
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/22—Character recognition characterised by the type of writing
    • G06V30/224—Character recognition characterised by the type of writing of printed characters having additional code marks or containing code marks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)

Abstract

1405418 Meter calibration SOLARTRON ELECTRONIC GROUP Ltd 15 Nov 1972 [23 Nov 1971] 54278/71 Heading G1U [Also in Division G4] An instrument 10 may be calibrated by reference to a digital voltmeter 50 of known accuracy using a reader 20 which converts a digit (e.g. 7 bar) display into a digital signal 46 (see Division G4). A signal 126 from a source 118 is selected by a control 116 and fed to 10 and 50, the readings 46, 52 from 20, 50 being fed to counter 56, 58. Gates 68, 96 and flip-flop 72 together cause a counter 106 to count clock pulses 100 from the instant that the count in one counter equals its input 46 or 52 till the instant that the count in the other counter equals its input 52 or 46, gates 76, 84 and flip-flops 80, 88 providing signals 111, 112 indicating that the count in 106 is negative or positive. The resulting "error count" may then be printed (when different colours may be used to indicate different error ranges) or displayed.
GB5427871A 1971-11-23 1971-11-23 Digital instruments Expired GB1405418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5427871A GB1405418A (en) 1971-11-23 1971-11-23 Digital instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5427871A GB1405418A (en) 1971-11-23 1971-11-23 Digital instruments

Publications (1)

Publication Number Publication Date
GB1405418A true GB1405418A (en) 1975-09-10

Family

ID=10470485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5427871A Expired GB1405418A (en) 1971-11-23 1971-11-23 Digital instruments

Country Status (1)

Country Link
GB (1) GB1405418A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145258A (en) * 1983-08-13 1985-03-20 Peter Graham Long A display repeater
FR2611067A1 (en) * 1987-02-18 1988-08-19 Izard Pierre METHODS AND DEVICES FOR REMOTELY REPORTING DIGITAL INDICATORS, IN PARTICULAR THOSE EQUIPPING COUNTERS
EP1959267A1 (en) * 2007-02-15 2008-08-20 MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. An automatic unit for verifying the calibration of a multimeter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145258A (en) * 1983-08-13 1985-03-20 Peter Graham Long A display repeater
FR2611067A1 (en) * 1987-02-18 1988-08-19 Izard Pierre METHODS AND DEVICES FOR REMOTELY REPORTING DIGITAL INDICATORS, IN PARTICULAR THOSE EQUIPPING COUNTERS
EP0279759A1 (en) * 1987-02-18 1988-08-24 Pierre Izard Methods and devices to read decimal figures on numerical indicators, especially on meters
EP1959267A1 (en) * 2007-02-15 2008-08-20 MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. An automatic unit for verifying the calibration of a multimeter

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee