JPH05130320A - Hand scanner device - Google Patents

Abstract

PURPOSE:To always read an original in a correct image regardless of the moving direction of a hand scanner. CONSTITUTION:The image data read by a hand scanner part 2 are stored in an image memory 9 and a main control part 1 detects by a direction detector 3 a fact that the scanning direction of the part 2 is reversed. Thus a data converting part 4 switches symmetrically the right and the left of the image data stored in the memory 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand scanner device mounted in a facsimile machine or the like, and more particularly to processing of image data obtained when the hand scanner is moved in the opposite sub-scanning direction.

[0002]

2. Description of the Related Art Conventionally, in this type of hand scanner device, an operator manually moves the hand scanner in the sub-scanning direction to read an image such as an original. However, the moving direction of the hand scanner is not fixed, and for example, the hand scanner can be moved from the top to the bottom or from the bottom to the top. However, since the main scanning direction of the hand scanner is always constant, the contents of the original can be correctly read depending on the moving direction of the hand scanner, and the case where the original is reversed (image data in the main scanning direction is not read). The left and right sides are reversed). Therefore, if the read image data is inverted from the original when the original is read using the hand scanner, the reading is stopped, and the hand scanner is moved again in the correct direction to move the document. The original has to be read again, which is very inconvenient. Therefore, there is a drawback that it takes time to transmit the image data read by using the hand scanner device by the facsimile device.

[0003]

As described above, in the conventional hand scanner device, the moving direction (corresponding to the sub-scanning direction) of the hand scanner is not fixed, and the image data is read regardless of the moving direction. You can do it. However, since the main scanning direction of the hand scanner is always constant, the left and right of the read document may be inverted to form image data depending on the moving direction of the hand scanner. The original has to be read again with the scanner moving in the correct direction, which is troublesome twice.

Therefore, the present invention eliminates the above-mentioned drawbacks, and an object of the present invention is to provide a hand scanner device which can always read a document as a correct image regardless of the moving direction of the hand scanner.

[0005]

According to the present invention, there is provided a hand scanner for manually moving a document in the sub-scanning direction to obtain image data of the document, and a memory for storing the image data obtained by the hand scanner. In the hand scanner device having, a scanning direction detecting means for detecting whether the hand scanner has moved in a forward direction or a backward direction, and the scanning direction detecting means detects that the hand scanner has moved in a reverse direction. Then, it has a configuration including a conversion unit that performs data conversion for replacing the left and right of the image data, which corresponds to the main scanning direction of the hand scanner stored in the memory.

[0006]

In the hand scanner device of the present invention, the scanning direction detecting means detects whether the hand scanner has moved in the forward direction or in the reverse direction. When the scanning direction detecting means detects that the hand scanner has moved in the opposite direction, the converting means performs data conversion for replacing the left and right of the image data stored in the memory and corresponding to the main scanning direction of the hand scanner.

[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 hand scanner apparatus of the present invention. Reference numeral 1 is a main control unit for controlling transmission / reception of image data, reading control of a document, etc. 2 is a hand scanner unit for manually scanning the document to obtain image data, 3 is a direction for detecting the moving direction of the hand scanner unit 2. A detector 4, a data conversion unit for inverting the image data symmetrically, 5 an operation unit for inputting telephone number information and various operation instructions, and 6 a printing unit for printing the received image data on a recording paper and outputting it. , 7 is a code decoding unit for coding or decoding image data, 8 is a call,
A communication control unit for receiving an incoming call and transmitting / receiving data, an image memory 9 for storing image data, and a line 10.
The hand scanner unit 2, the direction detector 3, the main control unit 1, and the image memory 9 form the hand scanner device of this example.

FIG. 2 is a diagram showing a detailed example of the hand scanner unit 2 and the direction detector 3 shown in FIG. Reference numeral 31 is a rotatable rotary shaft, 32 is a moving roller provided on the rotary shaft 31, and the diameter thereof takes into consideration the linear density in the sub-scanning direction. For example, when the roller 32 is rotated by a certain angle, it is set so as to coincide with the next reading line of the original 100. Further, the lower end of the moving roller 32 slightly protrudes from the reading unit 11 toward the document side, so that the moving roller 32 alone can smoothly move on the document. Reference numeral 33 is an encoder unit, which is an encoder plate 34 having slits on the outer circumference of the disk, a detector 35 for detecting the slits, and a encoder plate 34 for rotating the encoder plate 34 in synchronization with the moving rollers 32. It is composed of a belt 36 and a belt 36. Moreover, in this example, in addition to the above configuration, the direction detector 3 is provided on the rotating shaft 39. Therefore, the direction detector 3 detects in which direction the rotating shaft 39 is rotating, and this detection is performed. The signal is input to the main controller 1 of FIG. Accordingly, the main control unit 1 can determine whether the hand scanner unit 2 has moved in the forward direction or in the reverse direction. If the direction detector 3 has a structure in which a plurality of pairs of black and white patterns are printed at equal intervals on the circumference of the rotary plate and the patterns are converted into electric signals by a photocoupler, for example,
Since the pattern signal obtained from the photocoupler differs depending on the rotation direction of the disk, the rotation shaft 39
The rotation direction of can be detected.

Next, the operation of this embodiment will be described. When the manuscript is read using the hand scanner unit 2 and is to be input to the facsimile apparatus, the operator moves the hand scanner unit 2 in the arrow A direction (sub scanning direction) on the manuscript 100 shown in FIG. Then, the document or figure described on the original 100 is photoelectrically converted into image data. At this time, the main control unit 1 writes the image data obtained from the hand scanner unit 2 in the image memory 9 and
The main control unit 1 obtains information about the moving direction of the hand scanner unit 2 from the direction detector 3 attached to the hand scanner unit 2, and determines whether correct image data is obtained. Although the image data is read by the hand scanner unit 2 in this manner, if the moving direction of the hand scanner unit 2 is opposite, the document 100 shown in FIG.
3B is written in the image memory 9 as an image in which the left and right are reversed as shown in FIG. Since this is what the main control unit 1 knows from the movement information of the direction detector 3 described above, the main control unit 1 causes the data conversion unit 9 to perform the image data conversion operation described below.

That is, the main control section 1 activates the data conversion section 4 to symmetrically invert the left and right lines of the image data written in the image memory 9 in the main scanning direction. In FIG. 4A, the hand scanner unit 2 is moved in the opposite direction to move the original 100.
6 is a diagram showing an example of image data of one line (corresponding to the main scanning direction of the hand scanner unit 2) written in the image memory 9 when is read. The data conversion unit 4 is shown in FIG.
The data of the m-th bit of the image data of one line shown in (A) is read and written in the first bit of the line memory as shown in FIG. The (m-1) th bit image data of the image memory 9 shown in FIG.
Write in the bit. In this way, 1 of the image memory 9
When the left and right lines of data are symmetrically replaced and written in the line memory, the result becomes as shown in FIG. 4B, which is written in the corresponding one line portion of the image memory 9 as it is. By repeating such conversion operation from line 1 to line n of the image memory 9, the read image as shown in FIG. 3B written in the image memory 9 is shown in FIG. 3C. The image is converted into a normal image in which the left and right are reversed and is held in the image memory 9.

After that, when the telephone number information of the destination is input from the operation unit 5, the main control unit 1 gives the telephone number information to the communication control unit 8 to call the destination. As a result, when the line is connected to the destination, the main control unit 1 performs a predetermined protocol communication, then reads the image data in the image memory,
This is encoded by the encoding / decoding unit 7 and then transmitted from the communication control unit 8 to the destination.

FIG. 5 is a flow chart showing the operation of the main control section 1 shown in FIG. 1 at the time of reading a document. First, the main control unit 1 waits for the start of reading an original by the hand scanner unit 2 in step 501, and when the reading is started, the process proceeds to step 502 and the image data read by the scanner unit 2 is stored in the image memory 9. accumulate. At the same time, it is determined in step 503 whether or not the reading of the image data is completed. If the reading is not completed, the process returns to step 502, and if the reading is completed, the process proceeds to step 504. In step 504, the main control unit 1 determines from the direction information from the direction detector 3 whether or not the sub-scanning direction of the hand scanner unit 2 is the forward direction, and if so, the process is terminated, and if not. If so, go to step 505.
In step 505, the left and right of the image data in the image memory 9 are symmetrically inverted by the data conversion unit 4, and then the process ends.

According to this embodiment, when the document is scanned in the reverse direction by the hand scanner unit 2 and the image data is stored in the image memory 9, the main control unit 1 causes the direction detector 3 to detect the hand scanner unit 2. When it is known that the scanning direction of 1 is the reverse direction, the left and right of the image data in the image memory 9 can be replaced by using the data conversion unit 4 to obtain normal image data. Therefore, even when the scanning direction of the hand scanner unit 2 is reversed as described above, it is not necessary to scan the document in the forward direction again by the hand scanner unit 2 and reread the document as in the conventional case.
It is possible to remarkably improve the reading efficiency of the document. In addition, it is possible to eliminate the mistake of mistakenly transmitting a document whose left and right are reversed to the facsimile machine of the other party.

FIG. 6 shows another embodiment of the present invention, which is shown in FIG.
5 is a flowchart showing a document reading operation of the main control unit 1 shown in FIG. First, the main control unit 1 waits for the start of reading the original by the hand scanner unit 2 in step 601, and when the reading is started, the process proceeds to step 602 and the direction information from the direction detector 3 is used to detect the hand scanner unit 2. It is determined whether or not the sub-scanning direction is the forward direction, and if so, the process proceeds to step 605, and if not, the process proceeds to step 603. In step 603, the hand scanner unit 2 waits for the end of reading of one line of image data. When the reading is completed, the process proceeds to step 604, where the left and right of the read one line of image data are symmetrically arranged by the data conversion unit 4. After flipping, step 6
Go to 05. After the obtained image data is stored in the image memory 9 at step 605, it is judged at step 606 whether or not the reading is completed.
Returning to step 2, when the processing is completed, the processing is completed.

[0015]

As described above, according to the hand scanner device of the present invention, the original can always be read as a correct image regardless of the moving direction of the hand scanner.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a facsimile device equipped with a hand scanner device of the present invention.

FIG. 2 is a diagram showing a detailed example of a hand scanner unit and a direction detector shown in FIG.

FIG. 3 is a diagram showing an example of a document read by the apparatus shown in FIG. 1, an image accumulated in an image memory when the document is read, and a converted image thereof.

4A and 4B are diagrams showing an example of image data of one line and an example of image data after the conversion for explaining the operation of the data conversion unit 4 shown in FIG.

5 is a flowchart showing a document reading operation of the main control unit shown in FIG.

FIG. 6 is a flowchart showing the operation of the main control unit for realizing another embodiment of the present invention.

[Explanation of symbols]

1 ... Main control unit 2 ... Hand scanner unit
3 ... Direction detector 4 ... Data conversion unit 5 ... Operation unit
8 ... Communication control unit 9 ... Image memory

Claims (1)

[Claims] 1. A hand scanner device comprising a hand scanner for manually moving on a document in a sub-scanning direction to obtain image data of the document, and a memory for storing image data obtained by the hand scanner, Scanning direction detecting means for detecting whether the hand scanner has moved in the forward direction or in the reverse direction, and when the scanning direction detecting means detects that the hand scanner has moved in the reverse direction, it is stored in the memory. A hand scanner device, comprising: a conversion unit that performs data conversion for replacing left and right of image data corresponding to the main scanning direction of the stored hand scanner.