Image input device in which the image sensing conditions are changed depending on a data format required by an external device
First Claim
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1. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising:
- a determination means which determines a data format required by the external device connected to said output interface, anda changing means which changes image sensing conditions pertaining to the manner in which the image is captured in accordance with the determined format of said external device;
wherein said image sensing conditions determine the number of pixels which are captured.
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Abstract
An image sensing device that provides image data to an external device adjusts the resolution at which the image is sensed in accordance with format requirements of the external device. The format requirements of the external device can be automatically detected, or entered by a user. The operating parameters of a line sensor, to scan the image in a subscanning direction, are varied in accordance with the format requirements. These operating parameters can be the integration cycle of the sensor, and/or the speed at which the image is optically scanned past the sensor.
85 Citations
26 Claims
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1. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising:
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a determination means which determines a data format required by the external device connected to said output interface, and a changing means which changes image sensing conditions pertaining to the manner in which the image is captured in accordance with the determined format of said external device; wherein said image sensing conditions determine the number of pixels which are captured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising;
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an image scanning means which has a line sensor and scans the image by moving the line sensor with respect to the image; a determination means which determines a resolution required by the external device connected to said output interface, and a changing means which changes scanning speed of the line sensor in a subscan direction to obtain the required resolution in the subscan direction. - View Dependent Claims (10, 11, 12)
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13. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising;
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an image scanning means which has a line sensor and scans the image by moving the line sensor with respect to the image; a driving circuit which drives said line sensor in successive line cycles; a format determination means which determines a resolution required by the external device connected to said output interface; and a changing means which changes said line cycle to obtain the required resolution in a subscan direction. - View Dependent Claims (14, 15, 16)
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17. A sensing device for sensing an image and providing image data to an external device via an output interface, comprising;
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an image scanning means having a line sensor which scans a plurality of lines of an image to be sensed; a format determination means which determines a resolution required by an external device connected to said output interface; and means for controlling the number of lines of an image which are scanned by said line sensor in accordance with a determined resolution. - View Dependent Claims (18, 19)
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20. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising:
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a determination means which determines a data format required by the external device connected to said output interface and a changing means which changes image sensing conditions pertaining to the manner in which the image is captured in accordance with the determined format of said external device; wherein said image sensing conditions include an integration cycle of an image sensor used to capture said image.
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21. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising:
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a determination means which determines a data format required by the external device connected to said output interface, and a changing means which changes image sensing conditions pertaining to the manner in which the image is captured in accordance with the determined format of said external device; wherein said image sensing conditions determine the manner in which an image is captured in a sub-scanning direction; further including means for adjusting resolution in a main scanning direction by performing one of;
thinning and interpolation.
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22. A method for controlling an image sensing device that is connected to an external device via an output interlace, comprising the steps of:
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polling the external device via said output interface; determining a data format required by the external device in response to said polling; and adjusting image sensing conditions for said image sensing device in accordance with the determined data format; further comprising the steps of; detecting a failure of the external device to response to said polling; displaying a prompt for a user to manually enter a data format in response to said detection; and adjusting image sensing conditions for said image sensing device in accordance with the manually entered data format when the external device fails to respond.
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23. A sensing device for sensing an image and outputting image data to an external device via an output interface, said image sensing device comprising:
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a determination means which determines a data format required by the external device connected to said output interface, and a changing means which changes image sensing conditions pertaining to the manner in which the image is captured in accordance with the determined format of said external device; wherein said image sensing conditions determine the number of times to capture an image. - View Dependent Claims (24, 25, 26)
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Specification