Patent ID: 6998733

Claim:
A pulse current generation circuit comprising: a first N-type transistor that is connected at a first signal electrode to an output terminal for receiving an output pulse current, and that functions as a first constant current source in response to a bias voltage having a positive polarity; a second N-type transistor that is connected to a second signal electrode of the first N-type transistor and to ground, and that switches a current supplied by the first constant current source in response to an input pulse having a positive polarity and thus generates the output pulse current; a first P-type transistor that is connected at a first signal electrode to the output terminal and that functions as a second constant current source in response to a bias voltage having a negative polarity; a second P-type transistor that is connected to a second signal electrode of the first P-type transistor and to a power supply, and that switches a current supplied by the second constant current source in response to a first correction pulse having a negative polarity upon occurrence of an overshoot in the output pulse current and thus generates a first correction pulse current; a third N-type transistor that is connected at a first signal electrode to the output terminal, and that functions as a third constant current source in response to a bias voltage having a positive polarity; and a fourth N-type transistor that is connected to a second signal electrode of the third N-type transistor and to the ground, and that switches a current supplied by the third constant current source in response to a second correction pulse having a positive polarity upon occurrence of an undershoot in the output pulse current and thus generates a second correction pulse current.