Imaging apparatus with selectable subsets of photosensors
First Claim
1. A photosensitive apparatus, comprising:
- a plurality of photosensors, the photosensors being organized in a set of groups of photosensors;
a video output line, for accepting image-related video signals from the photosensors; and
selection means for activating a subset of groups of photosensors so that only the activated subset of groups of photosensors outputs image signals onto the video output line to record an image.
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Accused Products
Abstract
An image input scanner includes a linear array of photosensors to record images, such as in a digital copier or facsimile. A subset of the photosensors can be selected, depending on a particular situation, for recording images, while other photosensors are deselected. In this way, recording of “blank” image data, such as would be caused when photosensors in the array are not exposed to a sheet passing relative to the array, is avoided. In one embodiment, the array includes a plurality of local clock drivers, each clock driver controlling image data readout from a subset of photosensors. When a subset of photosensors are selected for a given situation, only the clock drivers associated with the selected photosensors are activated.
15 Citations
14 Claims
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1. A photosensitive apparatus, comprising:
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a plurality of photosensors, the photosensors being organized in a set of groups of photosensors;
a video output line, for accepting image-related video signals from the photosensors; and
selection means for activating a subset of groups of photosensors so that only the activated subset of groups of photosensors outputs image signals onto the video output line to record an image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for recording images from a sheet, comprising:
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a linear array of photosensors;
means for moving a sheet relative to the linear array of photosensors; and
selection means for selecting of subset of photosensors in the linear array for recording an image on the sheet. - View Dependent Claims (12, 13, 14)
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Specification