Reprographic device for making copies with multi-spaced lines

• US 5,528,732 A
• Filed: 10/17/1994
• Issued: 06/18/1996
• Est. Priority Date: 10/17/1994
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Klotz, Leigh L. Jr.
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): Popovici, Dov
• Application Number:
  US08/324,812
• Time in Patent Office: 610 Days
• Field of Search: 395/101, 395/102, 395/105, 395/106, 395/110, 395/111, 395/115, 395/116, 395/117, 395/144, 395/145, 395/146, 395/147, 395/148, 395/149, 395/150, 395/275, 395/823, 395/824 , 395/829, 395/834, 358/448, 358/453, 358/473, 382/176
• US Class Current: 358/1.6
• CPC Class Codes: G06K 15/02 using printers
• CPC Class Codes: H04N 1/32358 using picture signal storage, e.g. at transmitter H04N1/17 takes precedence
• CPC Class Codes: H04N 1/32475 Changing the format of the data, e.g. parallel to serial or vice versa
• CPC Class Codes: H04N 2201/3287 Storage of at least one complete document page or image frame

Abstract

A reprographic device providing means for increasing the amount of space between lines of text when copying a source medium. The present invention provides a means to obtain a copy of a document having room between lines of text for hand written annotations e.g. it is double spaced. This is accomplished by first creating a bit-mapped image of the document via a suitable scanning means, identifying lines of text and graphics within the document, identifying a document midpoint, measuring the distance between lines of text to obtain a distance X, placing lines of text and graphics completely above said midpoint in a first page memory and laying them out so that said lines of text are separated by a distance based on said distance X and a provided spacing factor, placing lines of text and graphics below said midpoint in a second page memory and laying them out so that said lines of text are separated by a distance based on said distance X and said provided spacing factor, and printing the contents of the first page memory and the second page memory.

Claims

1. A reprographic device comprising:

a scanner element for converting the contents of a medium to a bit-mapped representation;

a storage means comprising a first area for storing said bit mapped representation and a second area for storing a processed bit-mapped representation;

a printer element for printing said processed bit-mapped representation;

input means for indicating that a segment spacing adjustment of a predetermined value should occur for a bit-mapped representation being processed;

an image processor for processing said bit-mapped representation to create said processed bit-mapped representation;

said image processor further comprising;

image segmentation means for segmenting said bit-mapped representation into a plurality of text line segments and non-text segments;

measuring means for determining a separation distance between adjacent text line segments of said bit-mapped representation; and

space adjusting means for adjusting said distance between said adjacent text line segments based on said predetermined value and said separation distance between adjacent text line segments of said bit-mapped representation and storing as said processed bit-map representation.

2. The reprographic device as recited in claim 1 wherein said space adjusting means of said image processor is further comprised of means for identifying a first splitting point for said bit-mapped representation.

3. The reprographic device as recited in claim 2 wherein said means for identifying a first splitting point of said bit-mapped representation is further comprised of a means for finding a horizontal mid-point of said bit-mapped representation.

4. The reprographic device as recited in claim 2 wherein said means for identifying a first splitting point of said bit-mapped representation is further comprised of a means for finding a vertical mid-point of said bit-mapped representation.

5. The reprographic device as recited in claim 2 wherein said second area of said storage means is further comprised of a first page storage area and a second page storage area.

6. The reprographic device as recited in claim 5 wherein said space adjusting means is further comprised of placement means for placing segments on a first side of said first splitting point in said first page storage and placing segments on a second side of said splitting in said second page storage.

7. The reprographic device as recited in claim 6 wherein said placement means is further comprised of layout means for laying out segments on said first page storage and said second page storage separated by a distance based on said separation distance between text line segments and the spacing adjustment factor.

8. The reprographic device as recited in claim 7 wherein said means for identifying a first splitting point of said bit-mapped representation is further comprised of a means for finding a horizontal mid-point of said bit-mapped representation.

9. The reprographic device as recited in claim 7 wherein said means for identifying a first splitting point of said bit-mapped representation is further comprised of a means for finding a vertical mid-point of said bit-mapped representation.

10. The reprographic device as recited in claim 1 wherein said image segmentation means further comprises skew correction means for identifying and correcting for any skew detected in said bit-mapped representation.

11. The reprographic device as recited in claim 1 wherein said image segmentation means further comprise means for removing stray marks detected on said bit-mapped representation.

12. The reprographic device as recited in claim 1 wherein said input means is further comprised of a double space switch, said double space switch having associated therewith said predetermined value.

13. The reprographic device as recited in claim 1 wherein said image processor is further comprised of means for recognizing a bit-mapped representation as a form.

14. The reprographic device as recited in claim 13 wherein said input means is comprised of a form on a medium, said form having a checkbox that when marked indicates that said segments in said bit-mapped representation are to be adjusted by said predetermined value.

15. The reprographic device as recited in claim 1 wherein said measuring means is further comprised of averaging means for determining an average distance between each of said adjacent text line segments of said bit-mapped representation and providing said average distance as said separation distance.

16. On a reprographic device, a method for increasing the spacing between lines of text on a medium, said method comprising the steps of:

a) receiving a text line spacing factor;

b) scanning said medium to create a bit-mapped image representation of said medium;

c) identify text line segments and graphic segments of said bit mapped representations;

d) store the spatial addresses of said identified text line segments and graphic segments;

e) identifying a splitting address for contents of said medium;

f) identifying addresses for a set of first segments on a first side of said splitting address;

g) laying out said set of first segments on a first page memory based on said received spacing factor;

h) identifying addresses for a set of second segments on a second side of said splitting address;

i) laying out said set of second segments on a second page memory based on said received spacing factor; and

j) printing said first page memory and said second page memory.

17. The method as recited in claim 16 wherein said step of identifying a splitting address for contents of said medium is further comprised of the step of locating an address for a horizontal mid-point of said bit-mapped image representation.

18. The method as recited in claim 16 wherein said step of identifying a splitting address for contents of said medium is further comprised of the step of locating an address for a vertical mid-point of said bit-mapped image representation.

19. The method as recited in claim 16 wherein said step of laying out said set of first segments on a first page memory based on said received spacing factor is further comprised of the steps of:

g1) identifying a separation distance between text line segments;

g2) generating a layout distance based on said separation distance and said text line spacing factor;

g3) placing the text line segments on said first page memory separated by said layout distance.

20. The method as recited in claim 19 wherein said step of identifying a separation distance between text line segments is further comprised of the steps of:

g1A) measuring a distance between each pair of adjacent text line segments to obtain a set of first distances;

g1B) determining an average distance from said set of first distances; and

g1C) providing said average distance as said separation distance for laying said set of first segments.

21. The method as recited in claim 19 wherein said step of identifying a separation distance between text line segments is further comprised of the steps of:

g1A) measuring a distance between a first text line segment and an adjacent second text line segment;

g1B) providing said distance as said separation distance for said first text line segment and said adjacent second text line segment; and

g1C) repeating steps g1A and g1B for each pair of adjacent text line segments in said set of first segments.