TV Shinshu Broadcasting Co., Ltd. (株式会社テレビ信州, Kabushiki-gaisha TV Shinshu), also known as TSB, is a Japanese broadcast network affiliated with NNN and NNS. Their headquarters are located in Nagano Prefecture.
In July 1971, Kiichiro Takizawa applied for the license of the third private TV station in Nagano prefecture under the name of Shinshu TV Broadcasting, which was the first application for the third private broadcaster in Nagano Prefecture.[1]: 66