| 摘要 |
High vertical resolution can be obtained in a charge-coupled device (CCD) imager of the field transfer type by integrating charge in the A register in storage potential wells separated by potential barriers, with no empty potential wells separating the storage wells. Transfer of the integrated charge from the A to the B register at a speed which meets commercial television standards is obtained by employing a new type of multiple-phase clocking. Starting with the first row of charges Sj=S1, the clock pulses successively separate each row of charges Sj from the following row Sj+1 by a space for a potential well and a potential barrier, and in synchronism with each such separation, the clock pulses shift the rows Sj-1, Sj-2. . . , if any, which previously have been separated, in unison, all by one row position. Then, after the first row of charges S1 from the A register reaches the first row of the B register it becomes statically stored there, and the process reverses, that is, the spaces between adjacent rows of charges successively are eliminated, to obtain high charge packing density in the B register and to completely empty the A register. Then the B-to-C register readout is accomplished in a manner similar to the first part of the A-to-B register readout.
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