Hand-held image reading apparatus

• US 5,083,218 A
• Filed: 02/08/1990
• Issued: 01/21/1992
• Est. Priority Date: 02/08/1989
• Status: Expired due to Term

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Sagisaka, Atsushi, Takasu, Akihide
• Primary Examiner(s): Coles, Sr., Edward L.
• Application Number:
  US07/477,232
• Time in Patent Office: 712 Days
• Field of Search: 358/453, 358/473, 382/48, 382/59
• US Class Current: 358/473
• CPC Class Codes: H04N 1/0461 part of the apparatus being used in common for reading and reproducing simultaneous scanning of the original picture and the reproduced picture with a common scanning device H04N1/207
• CPC Class Codes: H04N 1/0476 Indicating the scanning velocity
• CPC Class Codes: H04N 1/107 with manual scanning
• CPC Class Codes: H04N 1/1077 Arrangements for facilitating movement over the scanned medium, e.g. disposition of rollers
• CPC Class Codes: H04N 2201/0471 using dedicated detectors
• CPC Class Codes: H04N 2201/04724 on a separate encoder wheel
• CPC Class Codes: H04N 2201/04734 Detecting at frequent intervals, e.g. once per line for sub-scan control

Abstract

A hand-held image reading apparatus reads image data corresponding to image information from a surface and prints the image data on a printing medium. The apparatus reads the image data by moving over the surface. Further, the apparatus stores the read image data in an internal memory, extracts the image data existing in the center of the image data stored in the memory and prints only the extracted image data on the printing medium.

Claims

1. An image data processing apparatus, comprising:

inputting means for inputting image data in response to a predetermined area of a material having image information thereon;

memory means for storing the image data inputted by said inputting means;

counting means for counting the number of a predetermined kind of data of the image data stored in said memory means;

determining means for determining a space between a set of image data existing in a middle portion of the image data stored in said memory means and another set of image data stored in said memory means based on a result obtained by said counting means;

extracting means for extracting said set of the image data existing in the middle portion of the image data with respect to the space determined by said determining means; and

outputting means for outputting said set of image data extracted by said extraction means.

2. The image data processing apparatus of claim 1, wherein

said memory means includes a plurality of storing cells arranged in rows and columns;

said counting means includes means for counting the number of predetermined kind of data of the image data stored in one of the rows and columns of said memory means; and

said determining means includes;

comparing means for comparing the number of image data counted by said counting means with a reference number and,

detection means for detecting one of the rows and columns in which the space between the set of image data exists in the middle portion of the image data stored in said memory means and the other set of image data stored in said memory means, based on a result obtained by said comparing means.

3. The image data processing apparatus of claim 2, wherein

said comparing means sequentially compares the number of image data with the reference number from the number of image data with respect to the center of a row and column toward that with respect to each side one of a row and column, and includes means for detecting points of said memory means with respect to another one of row and column directions on both sides of the center of said memory means corresponding to the number of image data which is less than the reference number the first time, and which is thereafter more than the reference number;

and

said detection means includes means for determining a point in the center between said two points detected by said comparing means for each side of the center of said memory means with respect to another one of the row and column directions, as an extraction point.

4. The image data processing apparatus of claim 2, wherein said comparing means includes reference number determining means for detecting a minimum number of the image data counted by said counting means and for determining the reference number based on the minimum number.

5. The image data processing apparatus of claim 1, wherein said inputting means includes image sensing means for producing binary data representing black and white, corresponding to the image information on the material;

and wherein;

said memory means stores the binary data produced by said image sensing means; and

said counting means counts the number of binary data representing one of black and white data.

6. The image data processing apparatus of claim 1, further comprising housing means provided for at least said inputting means, for moving said inputting means on a surface of said material;

and wherein;

said inputting means includes image sensing means having a sensing area of predetermined width extended in a direction orthogonal to that in which said inputting means is moved, for producing the image data corresponding to the image information on the surface over which said inputting means has been moved by said housing means.

7. The image data processing apparatus of claim 6, wherein:

said determining means includes means for determining a space between a set of image data existing in the middle portion with respect to the direction in which said sensing area of said image sensing means is extended and other sets of image data existing in the direction in which said sensing area of said image sensing means is extended, based on a result obtained by said counting means.

8. The image data processing apparatus of claim 7, wherein said memory means includes a plurality of storage cells arranged in rows and columns and stores each image data produced by said image sensing means corresponding to said sensing area, into said storage cells in every row;

said counting means includes means for counting the number of predetermined kinds of data of the image data stored in each row of said memory means; and

said determining means includes;

comparing means for comparing the number of image data counted by said counting means with a reference number; and

detection means for detecting the row in which the space between the set of image data existing in the center of the column direction of said memory means and other sets of the image data existing in the column direction of said memory means, based on a result obtained by said comparing means.

9. The image data processing apparatus of claim 8, wherein

said comparing means sequentially compares the number of image data with the reference number from the number of image data with respect to the center row toward that with respect to each side row, and includes means for detecting points of said memory means with respect to the column direction, corresponding to the number of image data which are less than the reference number the first time, and which are thereafter more than the reference number, on both sides of the center of said memory means with respect to the column direction;

and

said detection means includes means for determining a center point between said two points detected by said comparing means on both sides of the center of said memory means with respect to the column direction, as an extraction point.

10. The image data processing apparatus of claim 9, wherein said comparing means includes reference number determining means for detecting a minimum number of image data counted by said counting means and determining the reference number based on this minimum number.

11. The image data processing apparatus of claim 7, wherein said inputting means includes binary data producing means for producing binary data representing black and white from the image data produced by said image sensing means;

wherein said memory means stores the binary data produced by said binary data producing means; and

said counting means counts the number of binary data representing one of black and white.

12. The image data processing apparatus of claim 6, wherein said housing means moves on the surface to be read, so as to move said inputting means on the surface to be read.

13. The image data processing apparatus of claim 12, wherein said housing means is manually moved on the surface to be read.

14. A method of operating an image data processing apparatus which includes a memory means, the method comprising the steps of:

inputting image data in response to a predetermined area of a surface containing image information thereon;

storing the inputted image data into said memory means;

counting the number of a predetermined kind of data of the image data stored in said memory means;

determining a space between a set of image data existing in a middle portion of the image data stored in the memory means based on a result obtained by said counting step;

extracting the image data existing in the middle portion of the image data with respect to the space; and

outputting the image data extracted by said extracting step.

15. The method of claim 14, wherein

said memory means includes a plurality of storing cells arranged in rows and columns;

and

said counting step includes the step of;

counting the number of a predetermined kind of the image data stored in each row and each column of said memory means; and

wherein

said determining step includes the steps of;

comparing the number of image data with a reference number; and

detecting one row and column in which a space exists between the set of image data existing in the middle portion of the image data stored in said memory means and another set of image data stored in said memory means, based on a result obtained by said comparing step.

16. The method of claim 15, wherein said comparing step includes the steps of;

sequentially comparing the number of image data with the reference number from the number of image data with respect to the center one of the row and the column toward that with respect to each side one of the row and column,

judging points of said memory means with respect to another one of the row and column directions on both sides of the center of said memory means with respect to another one of the row and column direction corresponding to the number of the image data which is less than the reference number the first time, and thereafter more than the reference number; and

wherein

said detecting step includes the step of;

determining a point at the center between said two points detected by said comparing step for each side of the center of said memory means with respect to another one of the row and the column directions, as an extraction point.

17. The method of claim 15, wherein said comparing step includes the steps of:

detecting a minimum number of image data; and

determining the reference number based on said minimum number.

18. The method of claim 14, wherein:

said image data processing apparatus includes image sensing means having a sensing area of predetermined width and housing means provided for at least said image sensing means for moving said image sensing means; and

said determining step includes the step of;

determining the space between a set of image data existing in a middle portion with respect to a direction in which said sensing area of said image sensing means is extended and another set of image data existing in the direction in which said sensing area of said image sensing means is extended, based on a result obtained by said counting step.

19. The method of claim 18, wherein:

said memory means includes a plurality of storing cells arranged in rows and columns and stores each image data produced by said image sensing means corresponding to said sensing area, into said storing cells in every row;

said counting step includes the step of counting the number of the predetermined kind of image data stored in each of a number of rows of said memory means; and

wherein;

said determining steps include the steps of;

comparing the number of image data with a reference number; and

detecting the row of said memory means in which the space between the set of image data existing in the middle portion of a column direction of said memory means and another set of image data existing in the column direction of said memory means, based on a result obtained by said comparing step.

20. The method of claim 19, wherein said comparing step includes the steps of:

sequentially comparing the number of image data with the reference number from the number of the image data with respect to the center row toward that with respect to each side row; and

judging points of said memory means with respect to the rows on both sides of the center of said memory means, in response to the number of image data which is less than the reference number for the first time, and which is thereafter more than the reference number, every side of the center of said memory means with respect to the column direction; and

wherein

said detection step includes the step of;

determining the center point between said two points detected by said comparing step for each side of center of said memory means with respect to the column direction, as an extraction point.