Microfilm reader scanner capable of editing image

Claim 2

A microfilm reader scanner which projects an image on a microfilm onto a screen for observing and onto an image sensor for obtaining image data, comprising: an area specifying member in the form of a transparent sheet attached on said screen for specifying a desired area out of the projected image, said area specifying member producing signals corresponding to the positions where sheet is pressed; an area judgement means to produce an area data based on the signals produced by area specifying member; an attribute data input means for signifying an attribute of area specified by said area specifying member; a memory means for storing said attribute data; and an editing means for editing the image data obtained by said image sensor based on said attribute data stored in said memory means and said area data produced by said area judgement means.

Claim 3

A microfilm reader scanner according to claim 1, wherein said area specifying member includes a couple of insulating transparent films each having a multitude of the conductive wire laid thereon in a predetermined pitch, the conductive wires on said film are overlapped through spacers with the conductive wires on another film disposed perpendicularly to form a matrix contact group.

Claim 4

A microfilm reader scanner according to claim 1, wherein said area judgement means judges a rectangular area having a diagonal line coinciding with a segment connecting two points specified by said area specified member and produces the area data of specified rectangular area.

Claim 5

A microfilm reader scanner according to claim 1, wherein said memory means has a memory area for storing the attribute data of one frame of the microfilm.

Claim 6

A microfilm reader scanner according to claim 1, wherein said image sensor outputs the image data for individual pixels thereof.

Claim 7

A microfilm reader scanner according to claim 5, wherein said memory means stores the attribute data of every unit of a virtual area which is defined for each unit as one of the areas obtained by dividing an image area of the screen regularly so as to have a larger area than that of one pixel.

Claim 8

A microfilm reader scanner according to claim 6, wherein said editing means processes a signal from an individual pixel of said image sensor by the attribute data stored in said memory means for a corresponding unit of the virtual area in which said pixel is included.

Claim 9

A microfilm reader scanner according to claim 1, wherein said attribute data is enable to indicate a white attribute to make the desired area white, when said white attribute is indicated, said editing means produces digital data of a constant level regardless of image data.

Claim 10

A microfilm reader scanner according to claim 1, wherein said attribute data is enable to indicate a reversal attribute of image data, when said reversal attribute is indicated, said editing means produces digital data being reversed from black to white or vice versa.

Claim 11

A microfilm reader scanner according to claim 1, wherein said editing means has an analogue-to-digital conversion means for converting analogue signals received thereby to digital signals, a comparator means for comparing each digital signal with a threshold value and a select means for selecting a fixed threshold value for bi-level processing or a multi-step threshold value memorized in dither matrix for half-tone processing by the attribute data stored in memory means.

Claim 12

A microfilm reader scanner which projects an image on a microfilm onto a screen for observing and onto an image sensor for converting the optical image into image signals for individual pixels thereof, comprising: an area specifying means for generating an area signal in order to specify a desired area out of the projected image, said area specifying means including a transparent sheet, attached on the screen, which is regularly divided into a plurality of regions each having at least one electric contact to generate the area signal; an area judgement means to produce an area data based on the signals produced by specifying means; an attribute data input means for signifying an attribute of area specified by said area specifying means; a memory means, having a plurality of memory areas corresponding to the regions of said transparent sheet, for storing the attribute data corresponding to the regions which are specified by the area signal as the desired area; and an editing means for processing an output signal from individual pixel of said image sensor by the attribute data stored in said memory means and said area data produced by said area judgement means.

Claim 13

A microfilm reader scanner which projects an image on a microfilm onto a screen for observing and onto an image sensor for converting the optical image into image signals for individual pixels thereof, comprising: an area specifying means for generating an area signal in order to specify a desired area out of the projected image, said area specifying means including a transparent sheet, attached on the screen, which is regularly divided into a plurality of regions each having at least one electric contact to generate the area signal; an area judgement means to produce an area data based on the signals produced by specifying means; an attribute data input means for signifying an attribute of area specified by said area specifying means; a memory means, having a plurality of memory areas corresponding to the regions of said transparent sheet, for storing the attribute data corresponding to the regions which are specified by the area signal as the desired area; and an editing means for processing an output signal from individual pixel of said image sensor by the attribute data stored in said memory means and said area data produced by said area judgement means.

Claim 14

A microfilm reader scanner according to claim 11, wherein said transparent sheet is divided into plural regions in the transverse direction of the screen and in the direction perpendicular thereto, each said region having electric contacts at four corners thereof.

Claim 15

A microfilm reader scanner according to claim 12, wherein said electric contacts comprise intersecting points of a plurality of perpendicularly intersecting conductive wires.

Claim 16

A microfilm reader scanner according to claim 12, wherein said memory means stores the attribute data in the memory areas corresponding to the regions included in the desired area with a segment as a diagonal line which segment joins two points specified by the area signals from two electric contacts.

Claim 17

A microfilm reader scanner according to claim 12, wherein said regions are each of a range larger than the pixel of said image sensor.

Claim 18

A microfilm reader scanner according to claim 11, wherein said attribute data is enable to indicate a white attribute to make the desired area white, when said white attribute is indicated, said editing means produces digital data of a constant level regardless of image data.

Claim 19

A microfilm reader scanner according to claim 11, wherein said attribute data is enable to indicate reversal attribute of image data, when said reversal attribute is indicated, said editing means produces digital data being reversed from black to white or vice versa.

Claim 20

A microfilm reader scanner according to claim 11, wherein said editing means has an analogue-to-digital conversion means for converting analogue signals received thereby to digital signals, a comparator means for comparing each digital signal with a threshold value and, a select means for selecting a fixed threshold value for bi-level processing or a multi-step threshold value memorized in dither matrix for half-tone processing by the attribute data stored in memory means.