US4280144A — Coarse scan/fine print algorithm

Claim 1

Independent Claim 62 words

Image processing device for transforming coarse scan information into fine scan information comprising: means for encoding the coarse scan information into grey level information; logic means for combining the grey level information from a coarse PEL of interest and its adjoining surrounding coarse PELs; and conversion means operable to convert a combined grey level information into a fine PEL of black/white information.

Claim 2

Dependent Claim 62 words

Image processing device for transforming coarse scan information into fine scan information comprising: means for encoding the coarse scan information into grey level information; logic means for combining the grey level information from a coarse PEL of interest and its adjoining surrounding coarse PELs; and conversion means operable to convert a combined grey level information into a fine PEL of black/white information.

Claim 3

Dependent Claim 95 words

Device for increasing the resolution characteristic of an image processing apparatus, said device comprising: an encoding means for coding PELs according to the reflectance characteristics of said PELs; logic means for summing the codes assigned to a PEL of interest with the codes assigned to adjacent PELs lying on a pair of perpendicular lines intersecting said PEL of interest; and conversion means operable to accept each sum from the logic means and to convert said sum into a PEL with a spacial resolution higher than the spacial resolution at which the PEL is being scanned.

Claim 4

Dependent Claim 95 words

Device for increasing the resolution characteristic of an image processing apparatus, said device comprising: an encoding means for coding PELs according to the reflectance characteristics of said PELs; logic means for summing the codes assigned to a PEL of interest with the codes assigned to adjacent PELs lying on a pair of perpendicular lines intersecting said PEL of interest; and conversion means operable to accept each sum from the logic means and to convert said sum into a PEL with a spacial resolution higher than the spacial resolution at which the PEL is being scanned.

Claim 5

Dependent Claim 102 words

In an image processing apparatus wherein an original document is coarsely scanned at a first resolution, digitized and transmitted to a reproducing device for finely printing a copy of said document, a device for enhancing the quality of the finely printed copy, said device comprising: encoding means for assigning a code to a coarsely scanned PEL, said code being in accordance with a grey scale area in which the PEL falls; arithmetic means for summing the codes assigned to PELs adjacent to a PEL of interest; and means for comparing the sums with a predetermined scale and to generate a fine print.

Claim 6

Dependent Claim 102 words

In an image processing apparatus wherein an original document is coarsely scanned at a first resolution, digitized and transmitted to a reproducing device for finely printing a copy of said document, a device for enhancing the quality of the finely printed copy, said device comprising: encoding means for assigning a code to a coarsely scanned PEL, said code being in accordance with a grey scale area in which the PEL falls; arithmetic means for summing the codes assigned to PELs adjacent to a PEL of interest; and means for comparing the sums with a predetermined scale and to generate a fine print.

Claim 7

Dependent Claim 14 words

The apparatus claim in claim 3 further including means for storing the summed code.

Claim 8

Dependent Claim 111 words

Apparatus for scanning a document at a first resolution R and printing said document at a second resolution nR, n being an integer greater than one, said apparatus comprising: means for scanning said document and for generating a series of PELs indicative of the information contents of said document; means for encoding said PELs with a code indicative of the grey scale value of said PELs; and logic means for generating a print code, said print code including at least two sums of groups of scan codes with each group of scan codes including a first value for a PEL of interest and the values of scan codes for adjoining PELs.

Claim 9

Dependent Claim 111 words

Apparatus for scanning a document at a first resolution R and printing said document at a second resolution nR, n being an integer greater than one, said apparatus comprising: means for scanning said document and for generating a series of PELs indicative of the information contents of said document; means for encoding said PELs with a code indicative of the grey scale value of said PELs; and logic means for generating a print code, said print code including at least two sums of groups of scan codes with each group of scan codes including a first value for a PEL of interest and the values of scan codes for adjoining PELs.

Claim 10

Dependent Claim 29 words

The apparatus as claimed in claim 5 further including conversion means for accepting the print code and correlating the same with a predetermined scale to generate a print/no-print signal.

Claim 11

Dependent Claim 24 words

The apparatus of claim 6 further including a reproducing device to accept the print/no-print signal and to reproduce a copy of the scanned document.

Claim 12

Dependent Claim 14 words

The apparatus of claim 5 wherein the encoding means is a multi-bit A/D converter.

Claim 13

Dependent Claim 61 words

A process for fine printing a document from coarsely scanned data comprising the following steps: encoding the coarsely scanned data in accordance with a grey scale value; summing the grey scale values of a PEL of interest with the grey scale values of adjoining PEL; and correcting the summed grey scale value with a predetermined reference to generate a print/no-print signal.

Claim 14

Dependent Claim 61 words

A process for fine printing a document from coarsely scanned data comprising the following steps: encoding the coarsely scanned data in accordance with a grey scale value; summing the grey scale values of a PEL of interest with the grey scale values of adjoining PEL; and correcting the summed grey scale value with a predetermined reference to generate a print/no-print signal.

Claim 15

Dependent Claim 27 words

The process of claim 9 wherein the adjoining PELs to be summed are being positioned on a pair of perpendicular lines intersecting at the PEL of interest.

Claim 16

Independent Claim 121 words

A method for reproducing a copy of a scanned document comprising the following steps: scanning the document at a first resolution X to generate a plurality of PELs; encoding each PEL with a grey scale code indicative of a grey scale value of said PEL; generating a plurality of print PELs with each print PEL having a second resolution 4X and an encoded value X.sub.1 =X+V+W X.sub.2 =X+W+Y X.sub.3 =X+V+Z X.sub.4 =X+Y+Z where X 1 , X 2 , X 3 and X 4 are sub PELs of the print PEL, X is the grey scale code assigned to the scan PEL of interest and V, W, Y and Z are grey scale codes assigned to PELs adjoining the sub PELs.

Claim 17

Independent Claim 121 words

A method for reproducing a copy of a scanned document comprising the following steps: scanning the document at a first resolution X to generate a plurality of PELs; encoding each PEL with a grey scale code indicative of a grey scale value of said PEL; generating a plurality of print PELs with each print PEL having a second resolution 4X and an encoded value X.sub.1 =X+V+W X.sub.2 =X+W+Y X.sub.3 =X+V+Z X.sub.4 =X+Y+Z where X 1 , X 2 , X 3 and X 4 are sub PELs of the print PEL, X is the grey scale code assigned to the scan PEL of interest and V, W, Y and Z are grey scale codes assigned to PELs adjoining the sub PELs.

Claim 18

Dependent Claim 19 words

The method of claim 9 wherein the print PEL is being generated by summing the encoded scan PELs value.

Claim 19

Dependent Claim 27 words

The method of claim 9 further including the step of correlating the value for the summed print PELs with a predetermined scale to generate a print/no-print signal.

Claim 20

Independent Claim 45 words

A method for printing a document comprising of the following steps: scanning the document at a resolution × to generate a plurality of electrical signals indicative of the document; processing the electrical signals at a 2× resolution; and reproducing the document at a 4× resolution.

Claim 21

Independent Claim 45 words

A method for printing a document comprising of the following steps: scanning the document at a resolution × to generate a plurality of electrical signals indicative of the document; processing the electrical signals at a 2× resolution; and reproducing the document at a 4× resolution.

Claim 22

Dependent Claim 17 words

The method of claim 14 wherein the processing step includes the step of transmitting the electrical signals.

Claim 23

Dependent Claim 67 words

Device for reproducing a document comprising: scanner means for scanning the document and reproducing a plurality of electrical signals indicative of the information contents of said document; means for encoding the electrical signals in accordance with predetermined grey scale value codes; means for storing the grey scale value code; and calculating means for accessing the stored grey scale value codes and to generate a print/no-print signal therefrom.

Claim 24

Dependent Claim 67 words

Device for reproducing a document comprising: scanner means for scanning the document and reproducing a plurality of electrical signals indicative of the information contents of said document; means for encoding the electrical signals in accordance with predetermined grey scale value codes; means for storing the grey scale value code; and calculating means for accessing the stored grey scale value codes and to generate a print/no-print signal therefrom.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-07-20	1985-01-19	1985-07-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-07-20	1989-01-19	1989-07-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-07-20	1993-01-19	1993-07-21	$7700.00	Window Closed / Lapsed

Coarse scan/fine print algorithm

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag