JPH05110813A - Picture reader - Google Patents

Abstract

PURPOSE:To match the longitudinal and lateral directions of a read original with the longitudinal and lateral directions of read picture data by conversing the longitudinal and lateral directions of the read picture data. CONSTITUTION:The reader is provided with a page memory section 4 written by one page of picture data read by a flat head scanner section 1. When a longitudinal and lateral direction conversion instruction is inputted from an operation section 7 and the picture data are read from the page memory section 4, a control section 3 converts the longitudinal and lateral directions of the picture data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus having a flatbed scanner and a page memory for temporarily holding read image data.

[0002]

2. Description of the Related Art Conventionally, a facsimile apparatus equipped with an image reading apparatus of this type can read a book type original and send it. FIG. 7 is a diagram showing a state in which a book is read in a two-page spread using the image reading apparatus equipped with the flatbed scanner. As shown in the figure, the book 100 is opened to open the document table 200 of the scanner section.
In this case, the scanner scans one line at a time with respect to the main scanning direction B and sequentially scans with respect to the sub scanning direction B, thereby converting the contents of the double-page spread of the book 100 into image data. .. However, when the book 100 is placed on the document table 200 as shown in FIG. 1, there is a disadvantage that the image data read by the scanner is read in the opposite vertical and horizontal directions. If the read image data is transmitted as it is,
On the receiving side, there was a problem that a document with vertical and horizontal directions was output.

[0003]

In the image reading apparatus having the flatbed scanner as described above, the original table of the scanner unit is arranged so that the book is opened and the vertical direction of the book is parallel to the main scanning direction of the scanner. When the double-page spread of this book is read by placing it on the paper, there is a drawback that the vertical and horizontal directions of the obtained image data are reversed.

In view of the above, the present invention eliminates the above-mentioned drawbacks, and provides an image reading apparatus which can convert the vertical and horizontal directions of read image data to match the vertical and horizontal directions of a read original with the vertical and horizontal directions of the read image data. It is an object.

[0005]

According to the present invention, in an image reading apparatus having a memory for temporarily holding image data read by a flatbed scanner, input means for inputting a vertical / horizontal conversion instruction of image data, and the input means. When the vertical / horizontal conversion instruction is input, a vertical / horizontal conversion unit for converting vertical and horizontal of the image data written in the memory and reading the image data is provided.

[0006]

In the image reading apparatus of the present invention, the input means inputs the vertical / horizontal conversion instruction of the image data. When the vertical / horizontal conversion instruction is input by the input means, the vertical / horizontal conversion means converts the vertical and horizontal directions of the image data written in the memory and reads them.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a facsimile apparatus equipped with the image reading apparatus of the present invention. Reference numeral 1 is a flatbed scanner unit that converts a document such as a book into image data, 2 is an image processing unit that binarizes image data input from the flatbed scanner unit 3, and 3 is a document reading control or a facsimile communication control. A control unit for performing 4 is a page memory unit for storing one page of image data, 5 is a memory control unit for controlling reading / writing of image data to / from the page memory unit 4, and 6 is a recording paper for the received image data and the like. A recording unit for printing and outputting, 7 is an operation unit for inputting a telephone number and various operation instructions by key operation, and 8 is a line control unit for making a call, receiving a call, transmitting and receiving image data, and the like. still,
Flatbed scanner unit 1, image processing unit 2, control unit 3,
The page memory unit 4 and the memory control unit 5 are parts that constitute the image reading apparatus of this example.

Next, the operation of this embodiment will be described. For example, when a book is placed on the flatbed scanner unit 1 with a two-page spread (see FIG. 7) and read, the obtained image data is binarized by the image processing unit 2 and then the memory control unit via the control unit 3. Passed to 5. The memory control unit 5 writes the delivered image data in the page memory unit 4 as shown in FIG. Here, the memory map of the page memory unit 4 has a configuration as shown in FIG. 2, and the main scanning direction is 2048 dots,
The memory configuration has 4096 lines in the sub-scanning direction. In this example, the flatbed scanner unit 1 can read even a B4 document. or,
The address configuration of the page memory unit 4 is as shown in FIG. 3, and the flatbed scanner unit 1 has the main scanning direction A ₀ to.
In A _10, the sub-scanning direction is represented by A ₁₁ to A _22, in the illustrated example, all others in the address of the sub-scanning is the second line in the main scanning second dot A ₀ and A ₁₁ 1 0 Represented by 000801
_(H) is shown.

FIG. 4 is a block diagram showing a detailed example of the memory control unit 5 and the page memory unit 4 shown in FIG. The memory control unit 5 includes sub-scanning address units 51 for generating sub-scanning addresses (A _{11 to} A ₂₂ ) and main scanning addresses (A ₀ to A ₂₂ ).
A main scanning address section 52 for generating A ₁₀ ) is provided.

Next, when the book is placed on the flatbed scanner unit 1 with the spread spread and read, the vertical and horizontal directions of the obtained image data are converted to image data having the same vertical and horizontal relationship as the double-page spread of the book. If you want to send this after
When the operator inputs a destination telephone number from the operation unit 7 of FIG. 1, the operator gives a vertical / horizontal conversion instruction to the control unit 3. As a result, the control unit 3 transmits the image data written in the page memory unit 4 via the memory control unit 5 to the destination while converting the vertical and horizontal directions according to the flowchart shown in FIG.

The control unit 3 gives the telephone number information input from the operation unit 7 to the line control unit 8 to call the destination, and when the line is connected, a predetermined protocol communication is performed and then the page memory unit 4 is made. The written image data is read and transmitted to the destination. First, in order to set the reading position in the main scanning direction of the page memory unit 4 shown in FIG. 2 to (A _{0 to} A ₁₀ ) = 7FF _(H) in step 501, then in step 502 In order to set the first reading position in the scanning direction to (1), set (A _{11 to} A ₂₂ ) = 0 _(H) ,
Go to step 503. In step 503, (A _{11 to} A
₂₂ ) = 8FF _(H) After determining whether or not 8F
If not F, the process proceeds to step 504. Step 504
Then, the image data written in the address {i, (1)} designated by 7FF _(H) and 0 _(H) in the page memory unit 4 is read out and transmitted to the destination via the line control unit 8. .. After that, the control unit 3 proceeds to step 505 to update (A _{11 to} A ₂₂ ) = (A _{11 to} A ₂₂ ) +1 by 1 in the sub-scanning direction, and then to step 503.
Return to.

The control unit 3 repeats the processing of steps 503 to 505 until it is determined in step 503 that (A _{11 to} A ₂₂ ) = 8FF, so that the row of the address indicated by a in the main scanning direction is indicated. All the image data of is transmitted until the address in the sub-scanning direction becomes 7FFFFF (H). After that, the control unit 3 proceeds to step 507, where (A
It is determined whether or not _{0 to} A ₁₀ ) = 0 _(H) . If not, the process proceeds to step 506, and if so, the process ends. At step 506, (A _{0 to} A ₁₀ ) = (A
_{0 to} A ₁₀ ) -1 is performed to shift the line to be transmitted in FIG. 2 to the left by one line, and then the process returns to step 502. By repeating the processing of steps 505 to 506,
Transmission lines in the main scanning direction of the page memory unit 4 shown in FIG. 3 are sequentially shifted from a to left. After all, step 50
When (A _{0 to} A ₁₀ ) = 0 _{( H)} is determined in No. 7, FIG.
This means that all the images in the page memory unit 4 shown in (1) have been transmitted in the form of vertical and horizontal conversion.

FIG. 6 is a diagram showing an example of image data written in the page memory of the facsimile apparatus on the receiving side when the image data is transmitted with the vertical and horizontal conversions as described above.
As a result, it can be seen that the main scanning direction and the sub scanning direction are reversed, and the image data shown in FIG. 2 is vertically and horizontally converted and received.

According to the present embodiment, when the book is spread on the flatbed scanner unit 1 and read,
The obtained image data has the opposite vertical and horizontal directions with respect to the double-page spread, but in this example, when a vertical and horizontal conversion instruction is given, the vertical and horizontal directions of the image data are converted and transmitted to the destination, so that the facsimile apparatus on the receiving side. In this way, it is possible to obtain a received image in which the vertical and horizontal directions are the original.

If another page memory is provided in the embodiment shown in FIG. 1, the image data obtained from the flatbed scanner unit 1 is once written in the page memory unit 4 and then this is stored. A vertical / horizontal conversion may be performed in the other page memory to hold the page memory as shown in FIG.
Further, as shown in FIG. 1, after the left and right pages of the book are converted into image data by the flatbed scanner unit 1, the left and right pages are vertically and horizontally converted and transmitted as one page data.
The facsimile machine on the receiving side can receive the left and right pages as a one-page original.

[0016]

As described above, according to the image reading apparatus of the present invention, the vertical and horizontal directions of the read image data can be converted to match the vertical and horizontal directions of the read document with the vertical and horizontal directions of the read image data.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a facsimile apparatus equipped with an image reading apparatus of the present invention.

2 is a diagram showing a memory map example of a page memory unit shown in FIG.

FIG. 3 is a diagram showing an example of main scanning addresses and examples of sub-scanning addresses of the page memory unit shown in FIG.

FIG. 4 is a block diagram showing a detailed example of a memory control unit and a page memory unit shown in FIG.

5 is a flowchart showing an example of vertical / horizontal conversion processing of image data by a control unit shown in FIG.

FIG. 6 is a diagram showing an example of a memory map when writing image data whose height and width have been converted into a page memory.

FIG. 7 is a diagram showing a conventional example when reading a double-page spread of a book by a flatbed scanner.

[Explanation of symbols]

1 ... Flatbed scanner section 2 ... Image processing section 3 ... Control section 4 ... Page memory section 5 ... Memory control section 6 ... Recording section 7 ... Operation section 8 ... Line control section

Claims (1)

[Claims] 1. An image reading apparatus having a memory for temporarily holding image data read by a flatbed scanner, and input means for inputting an instruction for vertical / horizontal conversion of image data, and the input / output means for inputting the vertical / horizontal conversion instruction. Then, the image reading device is provided with a vertical-horizontal conversion unit for converting the vertical and horizontal directions of the image data written in the memory and reading the converted image data.