GB986533A - Facsimile apparatus - Google Patents

Facsimile apparatus

Info

Publication number
GB986533A
GB986533A GB1866862A GB1866862A GB986533A GB 986533 A GB986533 A GB 986533A GB 1866862 A GB1866862 A GB 1866862A GB 1866862 A GB1866862 A GB 1866862A GB 986533 A GB986533 A GB 986533A
Authority
GB
United Kingdom
Prior art keywords
filter
transmissivity
stepped
light
apertures
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
GB1866862A
Inventor
Joseph Grant Jordan
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.)
TI Gotham Inc
Original Assignee
Time 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 Time Inc filed Critical Time Inc
Publication of GB986533A publication Critical patent/GB986533A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/029—Heads optically focused on only one picture element at a time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Blocking Light For Cameras (AREA)

Abstract

986,533. Optical filters. TIME Inc. May 15, 1962 [May 14,1961],No. 18668/62. Heading G2J. A filter for use in a facsimile in black and white or colour apparatus (described in detail) is placed in a light beam which passes through an original on its way to a photo-electric device and provides for the beam of light a transmissivity which progressively decreases within the path radially outwards from a central axis. The transmissivity may vary continuously or in steps. Fig. 9 shows a "stepped" filter which comprises superimposed transparent developed film sheets 310, 313, 315 with central apertures 311, 312, 316 of different apertures. This filter may be photographed to provide single sheet filters of "stepped" or "continuous" form. Specifications 765,443, 765,444, 794,201, 827,865, 986,531, 986,532 and 986,534 are referred to.
GB1866862A 1961-05-16 1962-05-15 Facsimile apparatus Expired GB986533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12560661A 1961-05-16 1961-05-16

Publications (1)

Publication Number Publication Date
GB986533A true GB986533A (en) 1965-03-17

Family

ID=22420545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1866862A Expired GB986533A (en) 1961-05-16 1962-05-15 Facsimile apparatus

Country Status (3)

Country Link
CH (2) CH419228A (en)
GB (1) GB986533A (en)
NL (1) NL278515A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253935A2 (en) * 1986-07-25 1988-01-27 Light Signatures, Inc. Weighted-pixel characteristic sensing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253935A2 (en) * 1986-07-25 1988-01-27 Light Signatures, Inc. Weighted-pixel characteristic sensing
EP0253935A3 (en) * 1986-07-25 1989-04-12 Light Signatures, Inc. Weighted-pixel characteristic sensing

Also Published As

Publication number Publication date
CH419228A (en) 1966-08-31
NL278515A (en)
CH419227A (en) 1966-08-31

Similar Documents

Publication Publication Date Title
GB1335250A (en) Light beam switching arrangements
GB945600A (en) Photographic printing apparatus
GB1393922A (en) Photographic printer control apparatus and method
JPS5246813A (en) Photographic optical system for observation for ophthalmofunduscopic c amera
JPS539523A (en) Camera with light source light recording device
GB986533A (en) Facsimile apparatus
JPS51149004A (en) Optical apparatus
JPS52140333A (en) Optical device
GB1213479A (en) Method and apparatus for exposure regulation in a photographic colour printing process
GB1020783A (en) Process and apparatus for measuring photographic exposure time
GB1339167A (en) Optical monitoring apparatus
GB945372A (en) A method of modifying the gradation of colour-photographic printing material
JPS5337051A (en) Filter for optical apparatus
GB987035A (en) Simulated lens mount for photographic apparatus
GB1347836A (en) Device for obtaining blurring of optical images
JPS5723916A (en) Image-formation optical device
GB1223478A (en) Light source for photographic reproduction processes
GB817277A (en) A method and apparatus for the automatic production of photographic colour prints
JPS5776673A (en) Picture collator
JPS5380227A (en) Photographic attachment lens
SU511819A1 (en) DEVICE FOR RECOGNITION OF IMAGES
GB1269265A (en) Method of producing photographic negatives and prints
GB800026A (en) Improvements in and relating to picture projectors
GB851219A (en) Improvements in or relating to printing coloured photographic positives
JPS5428130A (en) Projector