GB488268A - Improvements in or relating to television and like systems - Google Patents
Improvements in or relating to television and like systemsInfo
- Publication number
- GB488268A GB488268A GB35805/36A GB3580536A GB488268A GB 488268 A GB488268 A GB 488268A GB 35805/36 A GB35805/36 A GB 35805/36A GB 3580536 A GB3580536 A GB 3580536A GB 488268 A GB488268 A GB 488268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- picture
- signals
- keying
- analyzer
- amplifiers
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
Abstract
488,268. Television transmitters. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 31, 1936, No. 35805. Convention date, Dec. 31, 1935. [Class 40 (iii)] Signals from only one of a plurality of picture-resolving devices 1, 6 are supplied to a common signalling channel 4 at any instant, in that amplifiers A, B, which couple the analyzers 1, 6 to the signalling channel, are rendered alternately operative by keying- signals of rectangular wave form, which are generated by a further analyzer 9 or 46 scanning a predetermined controlling pattern 11, 47. The received picture thus has one scene inset to the other. For changing from one scene to another, the analyzer 9 has a circle of holes and scans a controlling pattern such as that shown in Fig. 1a which is moved continuously opposite to the scanning disc. Alternatively a film such as shown in Fig. 1b may be used, moved intermittently and scanned by a spirally apertured scanning disc. The analyzer 9 may be an iconoscope. The system may be modified by using only one picture resolving device, the keying-signals then controlling the gain of the amplifier to produce the effect of spot-lighting in the received picture. Alternatively, the keying- signals may be added to the picture-signal to control the shading of the picture. Specifications 417,282 and 458,161 are referred to. According to the Specification as open to inspection under Sect. 91, the keying-signals are generated by multivibrators in synchronism with the deflection of the cathode rays, and are passed to control the amplifiers through phase-changers. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56860A US2164297A (en) | 1935-12-31 | 1935-12-31 | Television system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB488268A true GB488268A (en) | 1938-07-30 |
Family
ID=22007005
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17501/38A Expired GB490203A (en) | 1935-12-31 | 1936-12-31 | Improvements in or relating to television and like transmitting systems |
GB35805/36A Expired GB488268A (en) | 1935-12-31 | 1936-12-31 | Improvements in or relating to television and like systems |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17501/38A Expired GB490203A (en) | 1935-12-31 | 1936-12-31 | Improvements in or relating to television and like transmitting systems |
Country Status (2)
Country | Link |
---|---|
US (1) | US2164297A (en) |
GB (2) | GB490203A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3006993A (en) * | 1957-09-20 | 1961-10-31 | Charles F Barndt | Video effects generator |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2510714A (en) * | 1946-02-09 | 1950-06-06 | Du Mont Allen B Lab Inc | Mixing circuit for television cameras |
US2490561A (en) * | 1946-06-20 | 1949-12-06 | Jr William Ussler | Television picture mixing circuit |
US2532063A (en) * | 1946-09-07 | 1950-11-28 | Rca Corp | Position indicating system |
US2546338A (en) * | 1947-05-13 | 1951-03-27 | Du Mont Allen B Lab Inc | Circuit for minimizing transients during switching between two video channels |
US2568166A (en) * | 1948-04-23 | 1951-09-18 | Perry David Phillips | Television image superimposition |
US2611819A (en) * | 1949-02-26 | 1952-09-23 | Rca Corp | Television signal control system |
US2613263A (en) * | 1949-04-08 | 1952-10-07 | Earl D Hilburn | Plural camera television transmitter with electronic wipeout control |
US2585034A (en) * | 1949-10-29 | 1952-02-12 | Hammond Jr | Auxiliary camera break-in for television transmission systems |
US2706218A (en) * | 1949-11-15 | 1955-04-12 | William A Wootten | System for television-program film recording and record reproduction |
US2737730A (en) * | 1950-02-10 | 1956-03-13 | Emi Ltd | Apparatus for generating and reproducing electrical signals |
US2727942A (en) * | 1950-05-11 | 1955-12-20 | Don Lee Division Of General Te | Television synchronizing apparatus |
US2711441A (en) * | 1950-12-06 | 1955-06-21 | Hammond Jr | Television still picture transmitter |
US2730565A (en) * | 1951-03-21 | 1956-01-10 | Freeman H Owens | Production of composite live action and scenic effects for television |
US2784246A (en) * | 1951-04-10 | 1957-03-05 | Gen Electric | Electrical system |
US2843654A (en) * | 1951-12-01 | 1958-07-15 | Internat Telemeter Corp | Subscription television system using land line |
US2843655A (en) * | 1951-12-03 | 1958-07-15 | Internat Telemeter Corp | Subscription television with scrambled transmission and marquee and barker |
BE518758A (en) * | 1952-03-28 | |||
US2911466A (en) * | 1952-07-28 | 1959-11-03 | H D F Ltd | Method of and apparatus for the control of television picture signals |
DE957397C (en) * | 1952-09-03 | 1957-01-31 | Fernseh Gmbh | Method and arrangement for superimposing the television signal sequences supplied by various recording devices |
US2838848A (en) * | 1953-01-27 | 1958-06-17 | Ralph H Bergstad | Tactical training device for simulating radar displays |
US2918525A (en) * | 1953-06-24 | 1959-12-22 | Alden Products Co | Blanking circuit |
GB774290A (en) * | 1954-02-05 | 1957-05-08 | Communications Patents Ltd | Improvements in or relating to cathode ray tube display systems or apparatus |
US2809298A (en) * | 1954-02-26 | 1957-10-08 | Diamond Power Speciality | Automatic selector system |
US2877291A (en) * | 1954-06-09 | 1959-03-10 | Rca Corp | Color television test apparatus |
US2863227A (en) * | 1954-07-19 | 1958-12-09 | Howard E Chubb | Training apparatus reproducing the visual and audible presentations of an electronic scanning system |
US2885470A (en) * | 1954-12-20 | 1959-05-05 | Gen Precision Lab Inc | Television transmission quality testing system |
US2883763A (en) * | 1956-09-28 | 1959-04-28 | Otto F Schaper | Carrier landing trainer |
US2985064A (en) * | 1957-03-15 | 1961-05-23 | Rca Corp | Composite photography |
US2985065A (en) * | 1957-03-15 | 1961-05-23 | Rca Corp | Composite photography |
US2961920A (en) * | 1957-03-15 | 1960-11-29 | Rca Corp | Composite photography |
US2985063A (en) * | 1957-03-15 | 1961-05-23 | Rca Corp | Composite photography |
GB834840A (en) * | 1957-05-29 | 1960-05-11 | Associated Television Ltd | Improvements in lighting arrangements |
NL268860A (en) * | 1959-04-17 | |||
US3051779A (en) * | 1959-05-13 | 1962-08-28 | Louis Marcus | Wide screen television apparatus |
US3017457A (en) * | 1959-07-13 | 1962-01-16 | Minnesota Mining & Mfg | Transducing system |
US3217098A (en) * | 1962-08-29 | 1965-11-09 | Robert A Oswald | Method of policing horse races |
US3207842A (en) * | 1962-11-16 | 1965-09-21 | Harry D Flagle | Four channel video integrator |
DE1209152B (en) * | 1963-09-25 | 1966-01-20 | Edgar F Scholz | Method and device for transmitting and copying a typeface using the facilities of television broadcasting |
US4965825A (en) * | 1981-11-03 | 1990-10-23 | The Personalized Mass Media Corporation | Signal processing apparatus and methods |
US4541013A (en) * | 1982-07-19 | 1985-09-10 | Alpert Sidney A | Football signaling system |
-
1935
- 1935-12-31 US US56860A patent/US2164297A/en not_active Expired - Lifetime
-
1936
- 1936-12-31 GB GB17501/38A patent/GB490203A/en not_active Expired
- 1936-12-31 GB GB35805/36A patent/GB488268A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3006993A (en) * | 1957-09-20 | 1961-10-31 | Charles F Barndt | Video effects generator |
Also Published As
Publication number | Publication date |
---|---|
GB490203A (en) | 1938-08-02 |
US2164297A (en) | 1939-06-27 |
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