| 摘要 |
PURPOSE:To make practically use of a television program only as audible information by extracting and reproducing only a sound input signal of a television radio wave. CONSTITUTION:The titled device is a receiving and reproducing device only for sound and consists of an antenna 1, a tuner 2, an IF circuit 3, a sound detection 4, a sound amplification 5, a sound volume adjustment and a loud speaker section 7. Thus, the miniaturization and light weight are attained and the power consumption is less because of the absence of other parts, a stereo broadcast is listened to even by a television receiver without a multiplex broadcast receiver and the movement is attained independently even if the television switch is cut off, because of the independent device. |
