| 摘要 |
PURPOSE:To eliminate surely a noise component in a data signal by providing a gate circuit having plural input sections connected individually to each output section of a serial input/parallel output type shift register. CONSTITUTION:The serial input/parallel output shift register SR has an input section to which a data signal DS inputted from an input terminal IN and a gate circuit GT having plural input sections connected individually to output sections Q1, Q2, Q3 of the shift register SR having plural (e.g., 3) output sections Q1, Q2, Q3 consists of 3 diodes D1, D2, D3. Even when a noise component is included in the data signal supplied to the input section of the shift register, only when the output state of the data signal outputted in parallel from each output section of the shift register is coincident, since the data signal is outputted from the gate circuit, the noise component is eliminated effectively. |
