GB348260A - Improvements in or relating to picture telegraph and like systems - Google Patents

Improvements in or relating to picture telegraph and like systems

Info

Publication number
GB348260A
GB348260A GB6868/30A GB686830A GB348260A GB 348260 A GB348260 A GB 348260A GB 6868/30 A GB6868/30 A GB 6868/30A GB 686830 A GB686830 A GB 686830A GB 348260 A GB348260 A GB 348260A
Authority
GB
United Kingdom
Prior art keywords
scanning
members
shaped
remains constant
speed along
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
GB6868/30A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB348260A publication Critical patent/GB348260A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Character Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

348,260. Television; copying telegraphy. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 1, 1930, No. 6868. Convention date, March 13, 1929. [Class 40 (iii).] Rotating scanning members adapted to scan along a chord of their circular path are so shaped that the scanning speed along the chord remains constant. In electrochemical recording, the scanning members 3 .. 8, Fig. 1, pass over a bar 9, the paper 10 passing between. The members 3 .. 8 are so shaped that the scanning speed along the bar 9 remains constant. In television, a rotating mirror 16 throws an image of an illuminated slit 12 on the screen 17. The slit is traversed by apertures 15 in a disc 13, the apertures being so shaped that the scanning speed along the line remains constant. According to a modification, the scanning members 3 .. 8, Fig. 1, are adapted to move radially to the disc 2 under the action of a cam. A graphical method of obtaining the shape of the scanning members is described.
GB6868/30A 1929-03-13 1930-03-01 Improvements in or relating to picture telegraph and like systems Expired GB348260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE348260X 1929-03-13

Publications (1)

Publication Number Publication Date
GB348260A true GB348260A (en) 1931-05-14

Family

ID=6257138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6868/30A Expired GB348260A (en) 1929-03-13 1930-03-01 Improvements in or relating to picture telegraph and like systems

Country Status (2)

Country Link
US (1) US1852784A (en)
GB (1) GB348260A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005550A (en) * 1957-04-26 1961-10-24 California Packing Corp Peach pit fragment detection means and techniques
US3656175A (en) * 1969-06-16 1972-04-11 Ncr Co Semiconductor diode laser recorder

Also Published As

Publication number Publication date
US1852784A (en) 1932-04-05

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