Patent ID: 7317483
Filing Date: 2008-01-08
Classification: H04N

Abstract:
1. A charge transfer device for transferring information charge packet in accordance with a vertical synchronization signal and a horizontal synchronization signal, the charge transfer device comprising: a capacitor for storing the information charge packet; an output amplifier connected to the capacitor to be supplied with, and operated by, a first voltage, wherein the output amplifier receives a potential at the capacitor and generates an image signal corresponding to the potential at the capacitor, supply of the first voltage to the output amplifier being stopped during at least part of a blanking period of the vertical and horizontal synchronization signals; a first switching transistor connected to the output amplifier to selectively supply the output amplifier with the first voltage in response to at least one of the vertical synchronization signal and the horizontal synchronization signal; a reset drain arranged adjacent to the capacitor to drain the information charge packet stored in the capacitor synchronously with a transfer operation of the information charge packet; and a second switching transistor connected to the reset drain to supply the reset drain with a second voltage, wherein the second switching transistor stops supplying the reset drain with the second voltage after completing output of a predetermined amount of the image signal from the output amplifier.