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Kenjiro Takayanagi: The First Electronic Television Image, in 1926

By Infinite Creation · Profile

Historical photograph of Kenjiro Takayanagi.

At a Glance

Kenjiro Takayanagi (1899-1990) displayed a television image on a cathode ray tube on 25 December 1926 at Hamamatsu Technical High School: the katakana character イ, at 40 lines. It is the first electronic television display. The camera end still used a Nipkow disc, so the system was a hybrid. The receiving end was fully electronic, months before Farnsworth transmitted his first line in San Francisco. He is rarely included in English-language accounts of television's invention.

Lived: 1899-1990, Japan
Anchor year: 1926, first electronic television display, 25 December
Strand: overlooked, a linguistic erasure, not a technical one

Career

The problem as it stood

In 1926 mechanical television was being demonstrated in Britain and America, and its limits were already apparent at the display end: a neon lamp behind a spinning disc is dim, coarse and mechanically fragile. Rosing had shown a CRT receiver in 1911, but nobody had built a system around one that produced a recognisable image.

What he actually did

Takayanagi, then a young instructor with almost no budget, built a system with a Nipkow disc and photoelectric cell at the camera and a cathode ray tube at the receiver, and on 25 December 1926 displayed the katakana character イ at 40 lines. He had begun the work in 1924 after reading about television in a French magazine.

How it worked

The disc scanned the character. The photocell output was amplified and used to modulate the CRT beam, deflected in synchronism with the disc. The critical engineering was in the amplifier and the synchronisation: a CRT display only beats a mechanical one if the beam can be driven accurately and brightly enough, and that meant building amplification that did not yet come off a shelf.

What it made possible

Takayanagi went on to a fully electronic system with his own camera tube by 1935, and after the war led television development at Japan Victor Company. He is a founding figure of the Japanese television and video industry, whose later work runs through NHK's high-definition research and the consumer video business.

What happened to him

He built Japan's television research programme, worked at NHK and then JVC, and lived until 1990: long enough to see the industry he helped found dominate global consumer electronics. In Japan he is well known as "the father of Japanese television".

Where the credit landed

On 25 December 1926 Takayanagi displayed a television image on a cathode ray tube, the first electronic television display, using a mechanical Nipkow disc at the camera end. He is rarely included in English-language accounts of television's invention. The omission is linguistic rather than technical: he published in Japanese, and Anglophone histories largely did not follow. He is the clearest single example of the geographic erasure pattern.

Known For

His system was a hybrid, electronic display, mechanical camera. That is what makes the "first" claim precise rather than sweeping.
The date, 25 December 1926, predates Farnsworth's first transmitted line in September 1927.
Being absent from English-language accounts is not the same as being absent from the history.

Knowledge Base

What You'll Learn

Takayanagi is the test case for whether a history written in English is a history of the world or a history of what was published in English.

Why "first electronic television" needs qualifying

Television has a camera end and a display end, and they went electronic at different times. Takayanagi's display was electronic in December 1926 while his camera was mechanical. Farnsworth's image dissector, first transmitting in September 1927, was an electronic camera. Both claims are true and they are claims about different halves of the system, which is why the precise phrasing matters more than the ranking.

Where This Fits

Takayanagi's electronic image sits at the display end of the chain followed in A History of Broadcast Technology.

FAQ

Q: Was Takayanagi first to invent electronic television?
A: He produced the first electronic television display, on 25 December 1926, using a mechanical Nipkow disc at the camera end. Farnsworth built the first electronic camera tube, transmitting in September 1927. The two achievements concern different halves of the system.

Q: Why is he not better known outside Japan?
A: He published in Japanese and worked outside the American and British patent and press networks that produced most early television history. In Japan he is a well-known figure, often called the father of Japanese television.

Sources

The date and the apparatus were checked against an institutional account from his own university. Checked 20 August 2026.

Institute of Science Tokyo, A passion for innovation: Dr. Takayanagi. Confirms the demonstration on 25 December 1926 at the laboratory of Hamamatsu Higher Technical College, displaying the character on a cathode ray tube. The account also confirms the hybrid arrangement described above, since the image was scanned with a mechanical disc and displayed electronically.