US1992009A - Transmission and reception of pictures - Google Patents

Transmission and reception of pictures Download PDF

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Publication number
US1992009A
US1992009A US355028A US35502829A US1992009A US 1992009 A US1992009 A US 1992009A US 355028 A US355028 A US 355028A US 35502829 A US35502829 A US 35502829A US 1992009 A US1992009 A US 1992009A
Authority
US
United States
Prior art keywords
sources
light
picture
signal
pictures
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 - Lifetime
Application number
US355028A
Other languages
English (en)
Inventor
Ray D Kell
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US355028A priority Critical patent/US1992009A/en
Priority to GB11452/30A priority patent/GB341353A/en
Priority to FR693983D priority patent/FR693983A/fr
Priority to FR42581D priority patent/FR42581E/fr
Application granted granted Critical
Publication of US1992009A publication Critical patent/US1992009A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information

Definitions

  • My invention relates to the transmission and reception of pictures, and has for its principal object the provision of an improved apparatus and method of operation whereby a comparatively low intensity source of light may be utilized to produce a comparatively bright picture.
  • the drawing illustrates a receiving apparatus wherein my invention has been embodied.
  • This apparatus includes a picture receiving member 10 upon which the light of a plurality of sources 11, 12 and 13 is projected through scanning'means shown as a lens disk 14.
  • This scanning disk isprovidedwith a plurality of spirally arranged lenses l5 and is arranged to be rotated by a motor 16. With this arrangement, the light sources 11, 12 and 13 produce on the picture receiving member 10 images which are displaced from one another and are simultaneously swept across successive areas of the member 10 due to rotation of the disk 14.
  • phase control device 20 and a space discharge device or power tube 21
  • phase control device 22 and a space discharge device or power tube 23'.
  • phase control device 22 and a space discharge device or power tube 23'.
  • Any suitable phase control device for example, such as that disclosed by United States Patent of Ernst F. W. Alexanderson No. 1,655,041, may be utilized for controlling the phase of the signal supplied to the light source 12 and 13.
  • Another suitable phase control device is that disclosed by the Alexanderson Patent No. 1,719,866, July 9, 1929.
  • the lamps 11, 12 and 13 produce on the member 10 images which are displaced from one another by distances dependent on the spacing between the lamps. In the absence of the phase control devices 20 and 22, the lamps would therefore produce on the member 10 pictures which were overlapped and displaced from I one another. The function of the phase control devices 20 and 22 is to make these different pictures coincide with one another.
  • the signal received through the antenna 17 is shifted in phase by the device 20 sothat when it is applied to the lamp 12 this lamp produces on the member 10 a picture which coincides with that produced by the lamp 11.
  • the received signal is so shifted in phase by the device 22 that the picture produced by the lamp 13 also coincides with that produced by the lamp 11.
  • the lamps 11, 12 and 13 simultaneously produce different parts of coinciding pictures and the brilliancyv of the picture is much; greater than that realized fromthe use of a single lamp.
  • the steps comprising receiving television signals, transmitting said signals over a plurality of independent circuits, delaying the signals in one circuit with respectsto signalsvim other. cimuits by a-time-period-le'ss thanrthe time period required for a complete scanning of the image, and controlling a source of light by the signals in each circuit, whereby the sources of light completethe same cycles of variations in delayed sequences.
  • A'televisionreceiver comprising a plurality of sources of light, means to control each source with a time delay period'less than thescanningperiod according to successive portions of the same television signal wave, and synthesizing means to direct the time separated beams of light from each of the controlled sources over like-predetermined areas within the period of persistance of vision to form the television image,

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
US355028A 1929-04-15 1929-04-15 Transmission and reception of pictures Expired - Lifetime US1992009A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US355028A US1992009A (en) 1929-04-15 1929-04-15 Transmission and reception of pictures
GB11452/30A GB341353A (en) 1929-04-15 1930-04-10 Improvement in and relating to apparatus for the reception of pictures
FR693983D FR693983A (fr) 1929-04-15 1930-04-15 Perfectionnements à la transmission et à la réception d'images
FR42581D FR42581E (fr) 1929-04-15 1932-09-16 Perfectionnements à la transmission et à la réception d'images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US355028A US1992009A (en) 1929-04-15 1929-04-15 Transmission and reception of pictures

Publications (1)

Publication Number Publication Date
US1992009A true US1992009A (en) 1935-02-19

Family

ID=23395943

Family Applications (1)

Application Number Title Priority Date Filing Date
US355028A Expired - Lifetime US1992009A (en) 1929-04-15 1929-04-15 Transmission and reception of pictures

Country Status (3)

Country Link
US (1) US1992009A (fr)
FR (2) FR693983A (fr)
GB (1) GB341353A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517797A (en) * 1946-04-12 1950-08-08 Maynard D Mcfarlane Film facsimile scanning
US5281960A (en) * 1991-11-19 1994-01-25 Silhouette Technology, Inc. Helmet mounted display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517797A (en) * 1946-04-12 1950-08-08 Maynard D Mcfarlane Film facsimile scanning
US5281960A (en) * 1991-11-19 1994-01-25 Silhouette Technology, Inc. Helmet mounted display

Also Published As

Publication number Publication date
GB341353A (en) 1931-01-15
FR693983A (fr) 1930-11-27
FR42581E (fr) 1933-08-23

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