Image sensing device with different image sensing characteristics for documents and scenery
AssigneeMinolta Co., Ltd.
InventorsYasuhiro Kingetsu, Keizou Ochi
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Abstract
An image sensing device, such as an electronic camera, has different operating modes that are suited for sensing images of documents and sensing images of landscapes and the like. In the document mode, since information in the document is important, the image sensor is set at a maximum resolution. In the landscape mode, the resolution is varied in accordance with image brightness, to optimize the exposure conditions. Additional image processing is carried out in the document mode to enhance the sensed image and increase the efficiency with which memory is utilized.
Claims18
An image sensing device which converts an object image into electronic signals, said image sensing device comprising:
- a scanner having a line sensor which is moved relative to the object image to scan the object image;
- a mode selector which selectively sets a document mode that is suitable for image sensing of documents and a landscape mode that is suitable for image sensing of landscapes;
- and
- a controller which controls said scanner so as to scan the object image at a maximum resolution when said document mode is set by said mode selector, and to select one of multiple resolutions including the maximum resolution in accordance with brightness of the object image when said landscape mode is set by said mode selector, and control the scanner so as to scan the object image at the selected resolution.
An image sensing device which converts an object image into electronic signals, said image sensing device comprising:
- a scanner having a line sensor which is moved relative to the object image to scan the object image;
- a mode selector which selectively sets a document mode that is suitable for image sensing of documents and a landscape mode that is suitable for image sensing of landscapes;
- and
- a controller which controls said scanner in accordance with the mode set by said mode selector, such that when said document mode is set by said mode selector, said controller changes the time for scanning one line of the line sensor based on a first relationship between brightness of the object image and said scanning time, and when said landscape mode is set by said mode selector, said controller changes the time for scanning one line of the line sensor based on a second relationship between brightness of the object image and said scanning time, said second relationship being different from said first relationship.
An image sensing device which converts an object image into electronic signals, said image sensing device comprising:
- a mode selector which selectively sets a document mode that is suitable for image sensing of documents and a landscape mode that is suitable for image sensing of landscapes;
- and
- a controller which changes image sensing time for one line of an image in accordance with a first characteristic when said document mode is set by said mode selector, and changes image sensing time for one line of an image in accordance with a second characteristic when said landscape mode is set by said mode selector, said second characteristic being different from said first characteristic.
An image sensing device which converts an object image into electronic signals, said image sensing device comprising:
- a mode setting portion for selectively setting a first mode that is suitable for image sensing of text information and a second mode that is suitable for image sensing of scenery;
- and
- a controller for controlling the image sensing operation so that, when the first mode is set by said mode setting portion, the object image is sensed at a fixed resolution, and when the second mode is set by said mode setting portion, the object image is sensed at a resolution which is selected from multiple resolutions which are different from each other.
An image sensing device which converts an object image into electronic signals, said image sensing device comprising:
- a scanner having a sensor that is moved relative to the object image to scan the object image;
- a mode selector which selectively sets a document mode that is suitable for image sensing of documents and a landscape mode that is suitable for image sensing of landscapes;
- and
- a controller which controls said scanner so as to scan the object image at a maximum resolution when said document mode is set by said mode selector, and to select one of multiple resolutions including the maximum resolution in accordance with brightness of the object image when said landscape mode is set by said mode selector, and control the scanner so as to scan the object image at the selected resolution.
An image sensing device, comprising:
- a line sensor for converting an object image into electronic signals;
- a scanner for moving said line sensor relative to the object image to scan the object image;
- a mode setting portion for selectively setting a document mode and a landscape mode, said document mode being defined by a first function group including plural functions that are suitable for image sensing of documents, and a landscape mode being defined by a second function group including plural functions that are suitable for image sensing of landscapes;
- and
- a controller for controlling said image sensing device in accordance with the functions which are included in the mode set by said mode setting portion.
An image sensing device, comprising:
- an image sensor for capturing an object image to convert the object image into electronic signals;
- a scanner for moving said image sensor relative to the object image to scan the object image;
- a mode setting portion for selectively setting a document mode and a landscape mode, said document mode being defined by a first function group including plural functions that are suitable for image sensing of documents, and a landscape mode being defined by a second function group including plural functions that are suitable for image sensing of landscapes;
- and
- a controller for controlling said scanner in accordance with the mode set by said mode setting portion;
- wherein one of said functions of said second function group is related to the number of times for capturing the object, and said controller controls the image sensor so that the number of times for capturing in said document mode is larger than the number of times for capturing in said landscape mode.
Dependencies are inferred from the claim text.