| 摘要 |
In an SPS charge transfer device comprising a parallel register having a plurality of signal transfer channels for transferring signal charges, and a first and a second serial registers, a plurality of noise transfer channels for transferring noise charges due to a dark current are formed adjacent to and parallel with the signal transfer channels. The signal charges are transferred through the signal transfer channels toward the second serial register, and then through the second serial register, while the noise charges are transferred through the noise transfer channels toward the first serial register, and then through the first serial register. The signal charges at the output end of the second serial register and the noise charges at the output end of the first serial register are used to produce signals representing the signal charges which are originally introduced into the parallel register, i.e., the signal charges from which the noise components due to the dark current have been removed.
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