Wide picture/regular picture television signal receiver

Abstract

Abstract PURPOSE:To make the selective reception possible by switching for the output signal of an IDTV processor converted to a wide aspect ratio and the output signal of an EDTV processor, and displaying them in the wide aspect ratio. CONSTITUTION:Both terrestrial and satellite broadcast, after being channel- selected with tuners 103 and 104, are inputted to and processed at the IDTV processor 105 and the EDTV processor 106, and are outputted as signals of double speed scan, respectively. The signal processed with the IDTV processor 105 is aspect-converted so as to be displayed as the aspect ratio at an aspect ratio conversion circuit 108, and time compression in a horizontal direction is performed on the signal, and a picture with a radio of 4:3 is displayed in the center of a screen by shielding both ends by blanking. A switch circuit 109 is controlled with the detected signal of an EDTV signal detecting circuit 107, and switches an EDTV signal and a regular TV signal. And the signal is displayed in the wide aspect ratio on a display 110 with a ratio of 16:9.

Inventors

• 👤 Kenji Katsumata
• 👤 賢治 勝又
• 👤 Shigeru Hirahata
• 👤 茂 平畠
• 👤 Masahito Sugiyama
• 👤 雅人 杉山
• 👤 Himio Nakagawa
• 👤 一三夫 中川

Bibliographic Details