| 摘要 |
A charge packet differencer is implemented in a charge coupled device in such a manner that a first charge packet may be subtracted from a second charge packet thus giving a resultant charge packet equal to the difference between the first and second charge packets. The charge coupled device differencer comprises a semiconductor substrate in which there is formed first and second charge transfer devices, first and second charge substraction mechanisms, and a charge reservoir cooperating to produce a charge packet output representative of the difference between two input charge packets using a gate charge subtraction technique.
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