AU624508B2 - Apparatus for optical encoding - Google Patents

Apparatus for optical encoding Download PDF

Info

Publication number
AU624508B2
AU624508B2 AU55789/90A AU5578990A AU624508B2 AU 624508 B2 AU624508 B2 AU 624508B2 AU 55789/90 A AU55789/90 A AU 55789/90A AU 5578990 A AU5578990 A AU 5578990A AU 624508 B2 AU624508 B2 AU 624508B2
Authority
AU
Australia
Prior art keywords
axis
emitting device
light emitting
photodetector
path
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.)
Ceased
Application number
AU55789/90A
Other languages
English (en)
Other versions
AU5578990A (en
Inventor
Paul M. Donovan
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.)
Apple Inc
Original Assignee
Apple Computer Inc
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 Apple Computer Inc filed Critical Apple Computer Inc
Publication of AU5578990A publication Critical patent/AU5578990A/en
Application granted granted Critical
Publication of AU624508B2 publication Critical patent/AU624508B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304—Detection arrangements using opto-electronic means
    • G06F3/0312—Detection arrangements using opto-electronic means for tracking the rotation of a spherical or circular member, e.g. optical rotary encoders used in mice or trackballs using a tracking ball or in mouse scroll wheels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/002—Provisions or arrangements for saving power, e.g. by allowing a sleep mode, using lower supply voltage for downstream stages, using multiple clock domains or by selectively turning on stages when needed

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Analogue/Digital Conversion (AREA)
  • Optical Transform (AREA)
AU55789/90A 1989-05-24 1990-05-23 Apparatus for optical encoding Ceased AU624508B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35741989A 1989-05-24 1989-05-24
US357419 1994-12-16

Publications (2)

Publication Number Publication Date
AU5578990A AU5578990A (en) 1990-11-29
AU624508B2 true AU624508B2 (en) 1992-06-11

Family

ID=23405512

Family Applications (1)

Application Number Title Priority Date Filing Date
AU55789/90A Ceased AU624508B2 (en) 1989-05-24 1990-05-23 Apparatus for optical encoding

Country Status (5)

Country Link
JP (1) JPH03102215A (de)
AU (1) AU624508B2 (de)
CA (1) CA2017486A1 (de)
DE (1) DE4015913A1 (de)
GB (1) GB2233086B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU663203B2 (en) * 1992-05-21 1995-09-28 Selectech, Ltd. Optically coupled pointing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042302A1 (de) * 1990-12-31 1992-07-09 Bodenseewerk Geraetetech Schaltstellungssensor
JP2806198B2 (ja) * 1993-03-30 1998-09-30 三菱電機株式会社 エンコーダ装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185812B (en) * 1985-08-27 1989-08-09 Peter Howard Jackson Optical reading device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU663203B2 (en) * 1992-05-21 1995-09-28 Selectech, Ltd. Optically coupled pointing device

Also Published As

Publication number Publication date
AU5578990A (en) 1990-11-29
DE4015913A1 (de) 1990-11-29
JPH03102215A (ja) 1991-04-26
CA2017486A1 (en) 1990-11-24
GB2233086B (en) 1993-10-13
GB2233086A (en) 1991-01-02
GB9010747D0 (en) 1990-07-04

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