| 摘要 |
The circuit prevents a child's viewing of adult programs with the current supply interruption on selection of a prohibited channel. The circuit receives signals when a secret number is input and transmits driver adjusting signals (2). A comparison unit (100) controls a reception unit (200) current source by comparing the frequency bands of the TV signals. The compared TV signals are received by the main receiver (1) and the reception unit (200). There is a driver controller (2) for selection of the drive signals of the comparison unit by generating the adjusting signals, transmitted from the reception unit (200). |
