"Commercial TV broadcasters". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"TV Broadcasting Begins". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 11. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"Satellite Broadcasting Begins". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 16. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"Hi-Vision Goes Global". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 19. Archived from the original on 2017-02-24. Retrieved 24 February 2017.
"Commercial TV broadcasters". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"TV Broadcasting Begins". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 11. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"Satellite Broadcasting Begins". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 16. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
"Hi-Vision Goes Global". The Evolution of TV. A Brief History of TV Technology in Japan. NHK. p. 19. Archived from the original on 2017-02-24. Retrieved 24 February 2017.