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Interlaced readout of charge stored in charge-coupled image sensing array

  • US 3,911,467 A
  • Filed: 07/25/1974
  • Issued: 10/07/1975
  • Est. Priority Date: 07/25/1974
  • Status: Expired due to Term
First Claim
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1. A method of interlacing both vertically and horizontally the information received by an image sensing array having Q columns and S rows of image sensing locations where each location comprises N image sensing elements in a column and where Q, S and N are integers greater than 1, and for placing the interlaced information in the stages of a shift register having Q/2 stages comprising the steps of:

  • sensing the image during a first integration time only at corresponding groups of M of the N elements at each location, where M is an integer equal to at least 1 and which is less than N, and converting the radiation sensed at each location into a charge proportional to the amount of said radiation;

    shifting the charge accumulated during the first integration time into said output register with the charge stored in each pair of adjacent columns being concurrently shifted into a register stage for that pair of columns;

    sensing the image during a second integration time only at the remaining groups of M-N elements at each location and converting the radiation sensed at each location into a charge proportional to the amount of said radiation; and

    shifting the charge accumulated during the second integration time into said output register with the charge stored in each pair of adjacent columns being concurrently shifted into a register stage for that pair of columns, where each pair of columns selected for shifting the charge accumulated during the second integration time is different than each pair of columns selected for shifting the charge accumulated during the first integration time and includes one column taken from one pair and a Second column taken from a second pair of columns employed for shifting the charge accumulated during the first integration time.

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