GB413894A - Improvements in or relating to television systems - Google Patents

Improvements in or relating to television systems

Info

Publication number
GB413894A
GB413894A GB2537433A GB2537433A GB413894A GB 413894 A GB413894 A GB 413894A GB 2537433 A GB2537433 A GB 2537433A GB 2537433 A GB2537433 A GB 2537433A GB 413894 A GB413894 A GB 413894A
Authority
GB
United Kingdom
Prior art keywords
eye
cathode
tubes
alternately
lines
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
GB2537433A
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.)
RADIO CORPORATED
Original Assignee
RADIO CORPORATED
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
Priority to FR741099D priority Critical patent/FR741099A/fr
Priority to NL61555D priority patent/NL61555B/xx
Priority to BE377922D priority patent/BE377922A/xx
Priority to BE389285D priority patent/BE389285A/xx
Priority to BE371659D priority patent/BE371659A/xx
Priority to BE398015D priority patent/BE398015A/xx
Priority to BE393588D priority patent/BE393588A/xx
Priority to BE395907D priority patent/BE395907A/xx
Priority to BE387822D priority patent/BE387822A/xx
Priority to BE396560D priority patent/BE396560A/xx
Priority to BE390958D priority patent/BE390958A/xx
Priority to BE391266D priority patent/BE391266A/xx
Priority to BE390395D priority patent/BE390395A/xx
Priority to NL39554D priority patent/NL39554C/xx
Priority to BE371688D priority patent/BE371688A/xx
Priority to US433338A priority patent/US1955332A/en
Priority to FR699544D priority patent/FR699544A/en
Priority to FR39840D priority patent/FR39840E/en
Priority to US565226A priority patent/US2289914A/en
Priority to US607730A priority patent/US2246918A/en
Priority to US627565A priority patent/US2107464A/en
Priority to DER88507D priority patent/DE683957C/en
Priority to DER85803D priority patent/DE755140C/en
Priority to GB25079/32A priority patent/GB408656A/en
Priority to GB15496/33A priority patent/GB401990A/en
Priority to DER88042D priority patent/DE648195C/en
Priority to GB2537433A priority patent/GB413894A/en
Application filed by RADIO CORPORATED filed Critical RADIO CORPORATED
Publication of GB413894A publication Critical patent/GB413894A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/39—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier
    • H03K4/43—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier combined with means for generating the driving pulses
    • 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
    • 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
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
    • 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
    • H04N3/36—Scanning of motion picture films, e.g. for telecine
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/0675—Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

413,894. Television &c. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London. -(Radio Corporation of America; 30, Rockefeller Plaza, New York, U.S.A.) Sept. 13, 1933, No. 25374. [Classes 40 (iii) and 40 (v).] In a stereoscopic television system which may employ cathode-ray apparatus both for transmission and for reception, lines belonging to the right-eye and left-eye pictures are scanned alternately at the transmitter. At the receiver both sets of lines are reproduced on the same screen 77, Fig. 1, and are viewed through a grating 97. Stereoscopic transmission. Two cathode-ray tubes 1, 3, Fig. 3, one for each eye, may be used for transmission as described below. The oscillator 9 operates at line-scanning frequency to render the tubes 1, 3, operative alternately. Valves 13, 15 are so biassed that they are alternately blocked by the oscillations. They are resistance-coupled to a further pair of valves 23, 25, whose outputs are used to bias the control grids 33, 37, of the tubes 1, 3, so as to bring them alternately above and below cutoff ; the tubes therefore scan successive lines. Cathode-ray transmitter. Each of the tubes 1, 3, Fig. 3, is constructed as shown in Fig. 9. A cathode beam scans the photoelectric surface 47 under the influence of a pair of coils 43 and a pair of plates 45 ; and the variation of the electron current is applied through resistance 55 to a line or wireless transmitter. This variation is produced by projecting an image of the object 49 on to the photoelectric surface 47, so that the space charge above each element of the surface depends on the brightness of that element. Alternatively (Fig. 8, not shown) two mirrors, one representing each eye, may reflect light from the object through two Nipkow spirals of apertures. In a modification the two cathode-ray tubes may be replaced by one tube having a light sensitive surface 47 on each half of which an image is formed, the two sensitized halves being separated by a non-sensitized strip to permit of the interpolation of a synchronizing-signal, (Figs. 5 and 6, not shown). Stereoscopic reception. A cathode-ray receiver, (Fig. 10, not shown), synchronized as described in Specification 407,409 and arranged in a cabinet having a mirror lid as described in Specification 377,622 and a sound-receiver. Its anode may comprise a metallic deposit on the inside of the tube (Fig. 10, not shown). The scanning-lines for left-eye and right-eye are traced alternately and viewed through a grating (97, Fig. 1, not shown) so that only one of the eyes, R or L, sees each set of lines. Specification 395,499 also is referred to.
GB2537433A 1930-03-05 1933-09-13 Improvements in or relating to television systems Expired GB413894A (en)

Priority Applications (27)

Application Number Priority Date Filing Date Title
BE371688D BE371688A (en) 1931-09-26
NL61555D NL61555B (en) 1931-09-26
BE389285D BE389285A (en) 1931-09-26
BE371659D BE371659A (en) 1931-09-26
BE398015D BE398015A (en) 1931-09-26
BE393588D BE393588A (en) 1931-09-26
BE395907D BE395907A (en) 1931-09-26
BE387822D BE387822A (en) 1931-09-26
BE396560D BE396560A (en) 1931-09-26
BE390958D BE390958A (en) 1931-09-26
BE391266D BE391266A (en) 1931-09-26
BE390395D BE390395A (en) 1931-09-26
NL39554D NL39554C (en) 1931-09-26
FR741099D FR741099A (en) 1931-09-26
BE377922D BE377922A (en) 1931-09-26
US433338A US1955332A (en) 1930-03-05 1930-03-05 View transmission system
FR699544D FR699544A (en) 1931-09-26 1930-06-26 Remote transmission system of images and other objects
FR39840D FR39840E (en) 1931-09-26 1931-03-04 Remote transmission system of images and other objects
US565226A US2289914A (en) 1931-09-26 1931-09-26 Television system
US607730A US2246918A (en) 1931-09-26 1932-04-27 Unidirectional scanning
DER88507D DE683957C (en) 1931-09-26 1932-08-05 Receiving arrangement for stereoscopic television
US627565A US2107464A (en) 1931-09-26 1932-08-05 Television system
DER85803D DE755140C (en) 1931-09-26 1932-09-03 Television receiving circuit for the reintroduction of the average picture brightness
GB25079/32A GB408656A (en) 1931-09-26 1932-09-08 Improvements in or relating to television and like systems
GB15496/33A GB401990A (en) 1931-09-26 1933-05-29 Improvements in or relating to television and like systems
DER88042D DE648195C (en) 1931-09-26 1933-05-30 Arrangement for the generation of a current with a saw tooth shape for the magnetic deflection of cathode rays
GB2537433A GB413894A (en) 1933-09-13 1933-09-13 Improvements in or relating to television systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2537433A GB413894A (en) 1933-09-13 1933-09-13 Improvements in or relating to television systems

Publications (1)

Publication Number Publication Date
GB413894A true GB413894A (en) 1934-07-26

Family

ID=10226633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2537433A Expired GB413894A (en) 1930-03-05 1933-09-13 Improvements in or relating to television systems

Country Status (1)

Country Link
GB (1) GB413894A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185825B (en) * 1986-01-23 1990-08-01 John Charles Sanderson Spatial stereoscopic image system using concave mirror
GB2305048A (en) * 1995-09-06 1997-03-26 Thomson Multimedia Sa Stereoscopic display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185825B (en) * 1986-01-23 1990-08-01 John Charles Sanderson Spatial stereoscopic image system using concave mirror
GB2305048A (en) * 1995-09-06 1997-03-26 Thomson Multimedia Sa Stereoscopic display

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