GB1286766A - Apparatus for the transmission of information by television - Google Patents

Apparatus for the transmission of information by television

Info

Publication number
GB1286766A
GB1286766A GB226371A GB226371A GB1286766A GB 1286766 A GB1286766 A GB 1286766A GB 226371 A GB226371 A GB 226371A GB 226371 A GB226371 A GB 226371A GB 1286766 A GB1286766 A GB 1286766A
Authority
GB
United Kingdom
Prior art keywords
map
foil
television
information
jan
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
GB226371A
Inventor
Walter Mayer
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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 Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Publication of GB1286766A publication Critical patent/GB1286766A/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
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

1286766 Transmitting information by television GRUNDIG EMV ELEKTRO-MECHANISCHE VERSUCHSANSTALT MAX GRUNDIG 18 Jan 1971 [17 Jan 1970] 2263/71 Heading H4F Marks 7 representing information to be added to a map, document, drawing, &c., 1 are inscribed upon a face of a polarizing foil 5 situated adjacent the map &c. 1, the marked face being remote from the map &c. 1 and being illuminated by a light source 8. A second polarizing foil 6, crossed relative to the first foil 5, intercepts light reflected from the foil 5 and map &c. 1 (and optionally also transmitted through the map &c. 1, when this is transparent, from a second light source 3) so that a television camera 4 detects only the marks 7, the detail of the map &c. 1 being absorbed by the crossed foils 5, 6. Thus only the additional information is transmitted to a receiver 10, where it is projected on to a copy 12 of the original map &c 1.
GB226371A 1970-01-17 1971-01-18 Apparatus for the transmission of information by television Expired GB1286766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002050 1970-01-17

Publications (1)

Publication Number Publication Date
GB1286766A true GB1286766A (en) 1972-08-23

Family

ID=5759881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB226371A Expired GB1286766A (en) 1970-01-17 1971-01-18 Apparatus for the transmission of information by television

Country Status (2)

Country Link
FR (1) FR2074986A5 (en)
GB (1) GB1286766A (en)

Also Published As

Publication number Publication date
FR2074986A5 (en) 1971-10-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee