Charge-coupled linear image sensing device
First Claim
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1. A charge-coupled linear image sensing device comprising:
- an image sensor array having a plurality of image sensor elements to develop electric charges upon incidence of light rays thereon;
first and second charge-transfer arrays disposed on opposite sides of said image sensor array, respectively, each having a plurality of charge-transfer stages corresponding to respectively ordered ones in each sequential set of four successive said image sensor elements;
third and fourth charge-transfer arrays disposed between said image sensor array and said first and second charge-transfer arrays, respectively, each having a plurality of charge-transfer stages corresponding to respectively ordered ones in each sequential set of four successive said image sensor elements; and
first means for transferring the charges developed in the four successive image sensor elements of said each set to said first, second, third and fourth charge-transfer arrays, respectively;
said first transferring means including first and second electrodes disposed between said first and third charge-transfer arrays and between said second and fourth charge-transfer arrays, respectively, and third and fourth electrodes being disposed between said image sensor array and said third and fourth charge-transfer arrays, respectively;
second means for transferring the developed charges transferred from said image sensor array to said first, second, third and fourth charge-transfer arrays therein;
said second transferring means including a plurality of charge-transfer electrodes disposed to extend between said first and third charge-transfer arrays and between said second and fourth charge-transfer arrays, respectively.
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Abstract
An improved charge-coupled linear image sensing device which makes a greater number of image sensor elements available in a sensing area without necessarily increasing the driving frequency and without sacrificing the overall charge-transfer efficiency. The device includes two groups of charge-transfer arrays, each including two one-dimensional arrays separated from each other by control electrodes, and disposed on both sides of a one-dimensional image sensor array, respectively.
27 Citations
4 Claims
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1. A charge-coupled linear image sensing device comprising:
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an image sensor array having a plurality of image sensor elements to develop electric charges upon incidence of light rays thereon; first and second charge-transfer arrays disposed on opposite sides of said image sensor array, respectively, each having a plurality of charge-transfer stages corresponding to respectively ordered ones in each sequential set of four successive said image sensor elements; third and fourth charge-transfer arrays disposed between said image sensor array and said first and second charge-transfer arrays, respectively, each having a plurality of charge-transfer stages corresponding to respectively ordered ones in each sequential set of four successive said image sensor elements; and first means for transferring the charges developed in the four successive image sensor elements of said each set to said first, second, third and fourth charge-transfer arrays, respectively; said first transferring means including first and second electrodes disposed between said first and third charge-transfer arrays and between said second and fourth charge-transfer arrays, respectively, and third and fourth electrodes being disposed between said image sensor array and said third and fourth charge-transfer arrays, respectively; second means for transferring the developed charges transferred from said image sensor array to said first, second, third and fourth charge-transfer arrays therein;
said second transferring means including a plurality of charge-transfer electrodes disposed to extend between said first and third charge-transfer arrays and between said second and fourth charge-transfer arrays, respectively. - View Dependent Claims (2, 3, 4)
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Specification