Kálmán Tihanyi (April 28, 1897 - February 26, 1947), was a Hungarian physicist, electrical engineer and inventor. His most important inventions concerning the design of the cathode ray tube, iconoscope, for television were bought and developed by RCA (Radio Corporation of America) and German companies Loewe and Fernseh AG. April 28 is the 118th day of the year (119th in leap years) in the Gregorian Calendar, with 247 days remaining. ... 1897 (MDCCCXCVII) was a common year starting on Friday (see link for calendar). ... February 26 is the 57th day of the year in the Gregorian Calendar. ... 1947 (MCMXLVII) was a common year starting on Wednesday (the link is to a full 1947 calendar). ... An engineers degree is an academic degree which is intermediate in rank between a masters degree and a doctorate; it is occasionally to be encountered in the United States in technical fields. ... An inventor is a person who creates new inventions, typically technical devices such as mechanical, electrical or software devices or methods. ... Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT Electron guns Electron beams Focusing coils Deflection coils Anode connection Mask for separating beams for red, green, and blue part of displayed image Phosphor layer with red, green, and blue zones Close-up of the phosphor... The iconoscope was invented by Vladimir Zworykin in 1923, essencially a tube for television transmission used in the first cameras. ... RCAs logo as seen today on many products. ... LOEWE is a german TV manufacturer founded 1923 in Berlin. ...

He was born in Uzbeg, Hungary, studied electrical engineering and physics in Pozsony and Budapest. Engineering is the application of scientific and technical knowledge to solve human problems. ... The first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density. ... Pozsony is: the Hungarian name for Preßburg = Bratislava (the current capital of Slovakia), once capital of the Hungarian kingdom Hence, the abbreviated name of the Pozsony county from a time when it was part of the Kingdom of Hungary. ... Nickname: Paris of the East, Pearl of the Danubeor Queen of the Danube Location of Budapest in Hungary Country Hungary County Pest Mayor Gábor Demszky (SZDSZ) Area    - City 525,16 km²  - Land n/a km²  - Water n/a km² Population    - City (2006) 1,695,000  - Density 3570/km...

He filed his first patent application for a his fully electronic television system on March 20, 1926. Though it may at first brush seem similar to some earlier proposals also employing the cathode-ray tube (Braun tube) for both transmitter and receiver, on closer examination we discover that the system Tihanyi described represents a radical departure. Like the final, improved version Tihanyi would patent in 1928, it embodied an entirely new concept in design and operation, building upon a phenomenon that would become known as the "storage principle". This involved the maintenance of photoemmission from the lightsensitive layer of the photoraster (the "eye" of the camera) between scannings. By this means the accumulation of positive charges would take place and the "latent electric picture" would be stored. This would mean an effective increase in the picture current by a factor that under ideal conditions would equal the number of picture elements (pixels). Tihanyi filed two separate patent applications in 1928 then extended patent protection beyond Germany, filing in France, England and the United States, among others.

In 1928, Tihanyi went to Berlin, where the development of television, that is, mechanical type of television involving Nipkow disks, had already begun by the German Post and the larger manufacturers. The invention was received with enthusiasm by Telefunken and Siemens, but in the end they opted to continue with the development of mechanical television. Telefunken is a German radio- and television company, founded in 1903. ... Siemens has the following uses: Siemens is a German family name carried by generations of the telecommunications industrialists, including Werner von Siemens, Sir William Siemens, Wilhelm von Siemens and Peter von Siemens Siemens AG is a German electrical and telecommunications company, founded as a telegraph equipment manufacturer by Werner von...

RCA approached Tihanyi in 1930, after the publication of his patents in England and France. Negotiations continued until 1934, when RCA, ready to unveil its new television system based on Tihanyi's design, purchased his patents. These covered controlling features that the U.S. Patent Office patent examiners, citing Tihanyi's prior publications, had denied several key patent claims to Zworykin's 1930 - 31 pending applications. Tihanyi's U. S. patents, assigned to RCA, were issued to Tihanyi in 1938, respective 1939 with 1928 priority. Now it is becoming increasingly obvious that the originator of this pivotal invention was Kalman Tihanyi. Motto: (French for God and my right) Anthem: Multiple unofficial anthems Capital London Largest city London Official language(s) English (de facto) Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister Tony Blair MP Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq... The United States Patent and Trademark Office (PTO or USPTO) is an agency in the United States Department of Commerce that provides patent and trademark protection to inventors and businesses for their inventions and corporate and product identification. ... Vladimir Kosma Zworykin (July 30, 1889 - July 29, 1982) was a pioneer of television technology. ...

From 1929, Tihanyi worked on television-guidance for defense, building prototypes of a camera for robot aircraft in London for the British Air Ministry, later adapting it for the Italian Navy. In 1935-1940, he completed plans for an Acoustic Radiator -- with a planned projection range of up to 8 km -- and in 1940, he returned to Hungary where he built a full-scale prototype of the device. London (pronounced ) is the capital city of England and the United Kingdom. ... Pre-unitarian navies of the Italian states Regia Marina - Royal Navy of the Kingdom of Italy (1861 - 1946) Marina Militare - Navy of the Italian Republic (1946 - today) This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

External links

• http://www.mtesz.hu
• [http://www.geocities.com/neveyaakov/electro_science/tihanyi.html Kálmán Tihanyi
• http://www.unesco.org/webworld/mdm
• http://www.iec.ch/100years/techline
• http://www.mol.gov.hu/index.php?akt_menu=615