GB1284876A - Improvements in apparatus for processing signals before application to a counter - Google Patents

Improvements in apparatus for processing signals before application to a counter

Info

Publication number
GB1284876A
GB1284876A GB5436468A GB5436468A GB1284876A GB 1284876 A GB1284876 A GB 1284876A GB 5436468 A GB5436468 A GB 5436468A GB 5436468 A GB5436468 A GB 5436468A GB 1284876 A GB1284876 A GB 1284876A
Authority
GB
United Kingdom
Prior art keywords
reset
states
count
counter
signals
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
GB5436468A
Inventor
David Charles Wilson
William Richard Charlto Rowley
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB5436468A priority Critical patent/GB1284876A/en
Publication of GB1284876A publication Critical patent/GB1284876A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/26—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being duration, interval, position, frequency, or sequence
    • 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
    • G01D5/32—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 with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

1284876 Selective signalling NATIONAL RESEARCH DEVELOPMENT CORP 14 Jan. 1970 [15 Nov 1968] 54364/68 Heading G4H In a system for counting optical fringes in which a counter is driven forwards or backwards according to the phase relationship of two sinusoidal signals X, Y, signals are generated by AND gates 25 to 28 for the four possible coincidence states XY, X#Y, ##XY, #XY of which the two pairs of adjacent signals ##XY, #XY and X#Y, XY set and reset a respective one of bi-stable circuits 29, 30, the states of which are combined by AND gates 32, 33 to set or reset a third bistable circuit 35 whose output B or B indicates the direction of count on line 36. Once per cycle of the states XY, XY, XY, XY bi-stable circuit 37 or 38, depending on the direction of count, is set and reset to provide a count pulse via OR gate 39. AND gate 42 provides a pulse that would be lost on changing direction.
GB5436468A 1968-11-15 1968-11-15 Improvements in apparatus for processing signals before application to a counter Expired GB1284876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5436468A GB1284876A (en) 1968-11-15 1968-11-15 Improvements in apparatus for processing signals before application to a counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5436468A GB1284876A (en) 1968-11-15 1968-11-15 Improvements in apparatus for processing signals before application to a counter

Publications (1)

Publication Number Publication Date
GB1284876A true GB1284876A (en) 1972-08-09

Family

ID=10470761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5436468A Expired GB1284876A (en) 1968-11-15 1968-11-15 Improvements in apparatus for processing signals before application to a counter

Country Status (1)

Country Link
GB (1) GB1284876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141253A1 (en) * 2022-10-24 2024-04-26 Stmicroelectronics Sa I and Q signal detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141253A1 (en) * 2022-10-24 2024-04-26 Stmicroelectronics Sa I and Q signal detection
EP4361648A1 (en) * 2022-10-24 2024-05-01 STMicroelectronics France Detection of i and q signals

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee