GB897302A - Improvements in or relating to function generators and resolvers - Google Patents

Improvements in or relating to function generators and resolvers

Info

Publication number
GB897302A
GB897302A GB29648/58A GB2964858A GB897302A GB 897302 A GB897302 A GB 897302A GB 29648/58 A GB29648/58 A GB 29648/58A GB 2964858 A GB2964858 A GB 2964858A GB 897302 A GB897302 A GB 897302A
Authority
GB
United Kingdom
Prior art keywords
cell
disc
sin
marks
track
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
GB29648/58A
Inventor
Norman Frank Moody
Philip Martin Thompson
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.)
Minister of National Defence of Canada
UK Secretary of State for Defence
Original Assignee
Minister of National Defence of Canada
UK Secretary of State for Defence
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 Minister of National Defence of Canada, UK Secretary of State for Defence filed Critical Minister of National Defence of Canada
Priority to GB29648/58A priority Critical patent/GB897302A/en
Publication of GB897302A publication Critical patent/GB897302A/en
Expired 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
    • 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

Abstract

897,302. Electric selective signalling systems. CANADA, MINISTER OF NATIONAL DEFENCE. Sept. 16, 1958, No. 29648/58. Class 40 (1). A device for producing a number of pulses proportional to a desired function of an angular displacement comprises a photo-electrically sensed disc, Fig. 2, having marks spaced in accordance with the derivative of the desired function. As described, the desired function is sin # and the marks on track 22, Fig. 2, are spaced in accordance with cos #. To generate sin # a pick-up cell is arranged on the zero line to sense track 22 and the disc is then turned through the angle #. The number of marks sensed by the cell is then proportional to sin # and a second cell positioned over a track 23 indicates whether the marks are to be counted positively or negatively. In the preferred embodiment a fixed cell and also an angularlydisplaceable cell are provided and it is arranged that the disc be given a complete revolution but that counting of the marks sensed on track 23 occurs only for the period between the sensing of the zero mark by the fixed cell and its sensing by the angularly-displaced cell. Thus for each revolution of the disc sin # is entered once into a counter so that by rotating the disc A times it is possible . to form the product A sin #. Cos # can also be generated by a sensing cell over track 22 displaced from the sin # cell by 90 degrees. An outer track on the disc contains evenly-spaced marks, which, by being counted, give the actual angle turned through by the disc.
GB29648/58A 1958-09-16 1958-09-16 Improvements in or relating to function generators and resolvers Expired GB897302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB29648/58A GB897302A (en) 1958-09-16 1958-09-16 Improvements in or relating to function generators and resolvers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29648/58A GB897302A (en) 1958-09-16 1958-09-16 Improvements in or relating to function generators and resolvers

Publications (1)

Publication Number Publication Date
GB897302A true GB897302A (en) 1962-05-23

Family

ID=10294885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29648/58A Expired GB897302A (en) 1958-09-16 1958-09-16 Improvements in or relating to function generators and resolvers

Country Status (1)

Country Link
GB (1) GB897302A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169924A1 (en) * 1984-08-01 1986-02-05 Mannesmann Tally Ges. mbH Method and optoelectronic device for driving the trigger point of printing elements in matrix printing
GB2217837A (en) * 1988-04-12 1989-11-01 Fuji Heavy Ind Ltd "adjusting vehicle body height"

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169924A1 (en) * 1984-08-01 1986-02-05 Mannesmann Tally Ges. mbH Method and optoelectronic device for driving the trigger point of printing elements in matrix printing
GB2217837A (en) * 1988-04-12 1989-11-01 Fuji Heavy Ind Ltd "adjusting vehicle body height"
GB2217837B (en) * 1988-04-12 1992-08-19 Fuji Heavy Ind Ltd Method and apparatus for adjusting vehicle body height

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