Abstract:
A voltage reset method may include: acquiring a voltage that is changed with time by using an input photon; determining a timing for resetting the acquired voltage by using time information in a period where the acquired voltage increases; and/or resetting the acquired voltage on a basis of the determined voltage reset timing. A voltage reset apparatus may include: an acquisition unit configured to acquire a voltage that is changed with time by using an input photon; a determination unit configured to determine a timing for resetting the acquired voltage by using time information in a period where the acquired voltage increases; and/or a reset unit configured to reset the acquired voltage on a basis of the determined voltage reset timing.
Abstract:
Disclosed is a voltage obtaining apparatus. The voltage obtaining apparatus includes a plurality of conversion units, which are connected to each other in parallel and respectively convert charge packets into voltages, and a control unit that controls a timing when the charge packets are respectively input to the plurality of conversion units. The control unit is configured to control the timing so that a corresponding charge packet is input to an nth conversion unit (where n denotes number of the conversion units) at a timing when an operation of an (n−1)th conversion unit is ended.
Abstract:
Disclosed are a charge sensitive amplifier, a detector and an X-ray photographing apparatus including the same. The charge sensitive amplifier includes an amplification unit that amplifies an electric charge input thereto, a capacitor that has one end of the capacitor, connected to an input terminal of the amplification unit, and the other end connected to an output terminal of the amplification unit, and a buffer unit that has an input terminal and an output terminal which is connected to the input terminal of the amplification unit and the one end of the capacitor. Impedance at the input terminal of the buffer unit is lower than impedance at the output terminal of the buffer unit.