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GB1223267A - Improvements in or relating to film drive control arrangements - Google Patents

Improvements in or relating to film drive control arrangements

Info

Publication number
GB1223267A
GB1223267A GB4980168A GB4980168A GB1223267A GB 1223267 A GB1223267 A GB 1223267A GB 4980168 A GB4980168 A GB 4980168A GB 4980168 A GB4980168 A GB 4980168A GB 1223267 A GB1223267 A GB 1223267A
Authority
GB
United Kingdom
Prior art keywords
medium
distributer
coarse
fine
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
GB4980168A
Inventor
Peter Roy Burlong
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB4980168A priority Critical patent/GB1223267A/en
Publication of GB1223267A publication Critical patent/GB1223267A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/20—Control of position or direction using feedback using a digital comparing device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G01C21/22—Plotting boards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Navigation (AREA)

Abstract

1,223,267. Selective signalling. MARCONI CO. Ltd. 21 Aug., 1969 [21 Oct., 1968], No. 49801/68. Heading G4H. Gear coupled two-phase resolvers 3, 4, 5 are controlled sequentially by coarse, medium, and fine signals from a computer, not shown, to position a film strip 1, forming part of a navigation display system. As described, digital coarse, medium, and fine signals C, N, F are fed sequentially under the control of a distributer 20, 21, 22 to a digital-to-analogue converter 13 which produces sine and cosine signals for the resolver. When the error signal from the coarse resolver, which passes via a diode 24 to a threshold circuit 28, has fallen below the threshold level, the distributer advances to its next stage so that the medium signal exercises control. When the medium error is sufficiently low the distributer 20, 21, 22 advances to its last stage so that the fine signal exercises control. When this occurs an electric clutchcontrolled gear 8 is caused to introduce a reduction ratio of 1:150 between the drive motor 2 and the member being controlled.
GB4980168A 1968-10-21 1968-10-21 Improvements in or relating to film drive control arrangements Expired GB1223267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4980168A GB1223267A (en) 1968-10-21 1968-10-21 Improvements in or relating to film drive control arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4980168A GB1223267A (en) 1968-10-21 1968-10-21 Improvements in or relating to film drive control arrangements

Publications (1)

Publication Number Publication Date
GB1223267A true GB1223267A (en) 1971-02-24

Family

ID=10453582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4980168A Expired GB1223267A (en) 1968-10-21 1968-10-21 Improvements in or relating to film drive control arrangements

Country Status (1)

Country Link
GB (1) GB1223267A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189328A (en) * 1986-03-03 1987-10-21 Canon Kk Optical system adjustment device
US5136324A (en) * 1986-03-03 1992-08-04 Canon Kabushiki Kaisha Camera apparatus for adjusting the optical system at different speeds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189328A (en) * 1986-03-03 1987-10-21 Canon Kk Optical system adjustment device
GB2189328B (en) * 1986-03-03 1990-12-19 Canon Kk Optical system adjustment device for camera
US5136324A (en) * 1986-03-03 1992-08-04 Canon Kabushiki Kaisha Camera apparatus for adjusting the optical system at different speeds

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