| 摘要 |
The present invention has an object to provide a signal integration circuit for integrating weighted signal by a simple circuit. The signal integration circuit disclosed here comprising the first MOSFET (T1) including a drain connected to a power source (Vcc) and a gate connected to a plural number of the first capacitances (C1-Cn) in parallel; and an input means (WS1-WSn) connected to each capacitance; in which each input means comprises; the second MOSFET (T2) whose source is connected to the first capacitance through a resistance (R1), which receives an input pulse signal (D1), and whose gate is grounded through the second capacitance (Cg3), and the third MOSFET (T3) whose source is connected to a gate of the second MOSFET (T2), whose drain is connected to a power source (Vcc), and whose gate receives a pulse signal for setting weight (Wi); a gate of the first MOSFET receiving a reference saw-tooth signal (RP), a source of the first MOSFET grounded through the third capacitance (Cg1), and an output pulse signal being output from this source of said first MOSFET (T1). <IMAGE> |
