US1781210A - Television or like system and apparatus - Google Patents

Television or like system and apparatus Download PDF

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Publication number
US1781210A
US1781210A US353636A US35363629A US1781210A US 1781210 A US1781210 A US 1781210A US 353636 A US353636 A US 353636A US 35363629 A US35363629 A US 35363629A US 1781210 A US1781210 A US 1781210A
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US
United States
Prior art keywords
picture
disc
aperture
exploring
light
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
US353636A
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English (en)
Inventor
Baird John Logie
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.)
Baird Television Ltd
Original Assignee
Baird Television 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 Baird Television Ltd filed Critical Baird Television Ltd
Application granted granted Critical
Publication of US1781210A publication Critical patent/US1781210A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • This invention concerns improvements in or relating to television or'like systems and apparatus which are used for the transmission to a distance of a reproduction of an object, view, or scenehere inafter referred to as a picture.
  • the invention relates to that type of the above apparatus wherein there is employed a device (for example a rotating disc with a spiral arrangement of holes, lenses, or other light-apertures) which effects exploration, in
  • the invention comprises the provision, in television or like apparatus comprising an exploring device having a series of lightapertures which effects exploration in a series of parallel bands, of means for adjusting the orientation of those bands for the purpose above referred to.
  • adjustment of'the orientation of the-bands may be obtained by rendering the light-apertures effective, as regards their exploring function, at different points-of their ment may be such that exploration is effected at apart of the apparatus where the lightapertures are travelling substantially vertically, or at a part Where the light-apertures are travelling substantially horizontally.
  • the exploration is suitable for. a pictureof greater height than width while in the latter case it is suitable fora picture of greater width than height.
  • FIG 1 the receiving apparatus compr ses an exploring disc 2 having'the usual spiral arrangement of holes, mirrors, lenses or other light-apertures indicated at 4.v
  • a glow lamp or other light-screen 12 In the front part 6 of the casing of the apparatus are formed two viewing apertures 8 and 10 behind each of which and behind the disc 2 is located, respectively, a glow lamp or other light-screen 12, 14.
  • the switch 22 With this apparatus, if the picture to be received has its vertical dimension longer than its horizontal dimension, it will be viewed through the aperture 8 at the side of the disc 2, the switch 22 being so set that the lamp 12 is illuminated; while the vertical dimension ofthe picture is less than the horizontal dimension, the aperture 10 at the top of the disc 2 will be employed, the switch 22 being set to illuminate the lamp 14.
  • a single viewing'aperture 24 is formed in a part 26 of the front of the casing of the receiving apparatus.
  • Thispart 26 is supported by a shaft 28rotatable in bear ings 30 secured to the casing and arranged in line with the shaft of the exploring disc 2.
  • a lamp 32 is mounted upon' an arm 34 rotatable on a bearing sleeve 36 for the shaft of the exploring disc 2.
  • the arm 84 there is mounted, in a bearing'SS in the casing, a counter shaft 40 carrying sprocket wheels 42 which are coupled, respectively, by driving bands 44 with sprocket wheels 46, one on the I shait 28 and the other on the hub'of the arm I i 34.
  • the shaft 40 has a hand-wheel 48 by which it may be turned;
  • the part 26 and-the lamp 32 will be adjusted by turning the countershaft 40 to bring the viewing aperture 24 and the lamp 32 to the' top of the i disc 2, as shown in Figure 2.
  • the other *han-dfifthe longer dimension of the picture is vertically disposedfthe part" QGandthe lamp 82 will; be adjusted by: thehand-Wheel 1.
  • apertures and cells has the usual spiral-ar-i.
  • FIG. 5 A transmitting apparatus of the type is indicated in Figure 5.
  • this'apparatus there are'two projecting lamps 60, 62, the .lamp being1so situated in relation to :the
  • FIG. 6 shows "a transmitting apparatus having provision for adjustment of the same l" kind asthatof the receiver of Figure 2.
  • the ebjecty64 isexplpl'ed by jan-ex-l ploringdisc. 3 anda lightrsen'sitive ,ce11f33, 3 through a flaming aperture25 in a pa rtition 2'Zj-This partition is mounted'upon' ashaft '7 29fsupported' in a fixed bearingiilin line with i 1 the shaft of the discS, the. shaft '29 carrying also an arm 35.
  • the-cell 38 is sup-' ported-conductors 51 leadingthe current l ted 'byith el 3 i hesemplifi I other part, of the transmittin'g'apparatus.
  • paratus will be turned so cas to rest ionthe part 59 which is side in Figure 7 when;
  • an oblong picture is to be transmitted the longer dimension of which is horizontally disposed.
  • the osition of the apparatus is suitable for an 0 long pictufe which has its greater dimension vertica 1.
  • an exploring device of an opaque screen disposed adjacent said device, spaced portions of said screen being constructed to permit passage of light through the same and through said exploring device to frame the image, means for associating electrical and light impulses, and means for rendering said last named means operative adjacent one only of said spaced portions on the screen.
  • the combination With a rotatable exploring device, of an opaque screen cooperating With said device, said screen having framing apertures spaced about the exploring device, a plurality of elements for associating electrical and light impulses, one of said elements being operatively related to each aperture, and means for rendering any one of said elements operative to orientate the image.
  • the combination With a rotatable exploring device, of an opaque screen cooperating with said device, said screen hav ing framing apertures spaced about the exploring device, a plurality of elements for associating electrical and light impulses, one of said elements being operatively related to each aperture, an electrical circuit, and means for selectively including one of said elements in the circuit to orientate the image.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
US353636A 1928-05-15 1929-04-08 Television or like system and apparatus Expired - Lifetime US1781210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14311/28A GB317143A (en) 1928-05-15 1928-05-15 Improvements in or relating to television or like systems and apparatus

Publications (1)

Publication Number Publication Date
US1781210A true US1781210A (en) 1930-11-11

Family

ID=10038876

Family Applications (1)

Application Number Title Priority Date Filing Date
US353636A Expired - Lifetime US1781210A (en) 1928-05-15 1929-04-08 Television or like system and apparatus

Country Status (5)

Country Link
US (1) US1781210A (enrdf_load_stackoverflow)
BE (1) BE360557A (enrdf_load_stackoverflow)
FR (1) FR673854A (enrdf_load_stackoverflow)
GB (1) GB317143A (enrdf_load_stackoverflow)
NL (1) NL27583C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR673854A (fr) 1930-01-21
NL27583C (enrdf_load_stackoverflow)
GB317143A (en) 1929-08-15
BE360557A (enrdf_load_stackoverflow)

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