JPH0583475A - Hand scanner - Google Patents

Abstract

PURPOSE:To prevent any unwanted part from being unexpectedly read by executing a read operation only while an operator is scanning the surface of an original with he hand scanner. CONSTITUTION:When it is detected by a touch sensor 4 that the operator has the hand scanner for moving it, the output of a signal detection part 3 is turned to a high level, and an AND circuit 6 is opened. When the hand scanner is moved in such a state, a velocity signal is inputted from a velocity signal generation part 122 through the AND circuit 6 to a CPU 7 and when a line start pulse is inputted from a line start detection part 123 in such a state, the CPU 7 starts the reading of a read sensor part 111 through a sensor driving part 112.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention manually moves an original in the sub-scanning direction to display the contents of the original in an image data.
The present invention relates to a hand scanner device that is converted into a computer.

[0002]

2. Description of the Related Art Conventionally, this type of hand scanner device has a structure as shown in FIG. 31 is a rotatable rotary shaft, 32 is a moving roller provided on the rotary shaft 31,
The diameter takes the linear density in the sub-scanning direction into consideration. For example, the diameter of the roller 32 is set so that the roller 32 coincides with the next reading line of the original 100 when the roller 32 rotates by an angle. Also, moving rollers 3
The lower end of 2 projects slightly toward the document side from the reading unit 11, and can be smoothly moved on the document 100 only by the moving roller 32. Reference numeral 33 is an encoder unit, which is an encoder plate 34 having slits on the outer circumference of the disk.
And a detector 35 for detecting the slit and an encoder plate 34 for rotating in synchronization with the moving roller 32.
The belt 36 and the belt 37 are provided. The encoder plate 34 is provided with a plurality of slits at equal intervals on the circumference corresponding to one line scanning period. Therefore, when the reading unit 11 moves, a pulse signal corresponding to the speed is generated from the detector 35, and this pulse is input to the line start detecting unit 123 shown in FIG.

FIG. 5 is a diagram showing a control system of the above hand scanner device. A pulse signal corresponding to the speed of the hand scanner is output from the detector 35 to the line start detector 12.
3 is input, the line start detection unit 123 generates a line start pulse LST for each rotation angle of the roller 32 corresponding to one line scanning period, and outputs this to the control unit 2. When the line start pulse LST is input, the control unit 2 turns on the LED array 113 for a predetermined time via the sensor driving unit 112, and also reads the reading sensor unit 11.
1 is driven to photoelectrically convert the contents of the original 100. The image signal obtained from the reading sensor unit 111 is input to the image signal processing unit 5 and undergoes processing such as binarization.

After the reading switch (not shown) of such a hand scanner device is turned on, the hand scanner device is manually scanned (moved) along the original 100 in the direction of arrow A shown in FIG. The original 1
It is possible to read characters, figures, etc. on the image 00 as image data. However, when the switch of the hand scanner device is turned on, the reading operation is continuously continued in any situation, so an unnecessary image signal is output, and in some cases, this portion is also reproduced as a recorded image. There was a drawback that it would end up. Therefore, in the conventional hand scanner device, the switch must be turned on immediately before the start of reading the original, and the switch must be turned off when the necessary portion has been read, and the operability is not so good. There was a flaw.

[0005]

As described above, in the conventional hand scanner device, if the switch provided in the hand scanner unit for manual scanning is in the ON state, the reading operation is always performed, and the operator's attention is required. In the case of being distracted, there was a disadvantage that unnecessary things other than the manuscript were read.

In view of the above, the present invention eliminates the above-mentioned drawbacks by allowing the operator to carry out the reading operation only while holding the hand scanner and scanning the original.
An object of the present invention is to provide a hand scanner device that can prevent unnecessary reading of unnecessary parts.

[0007]

According to the present invention, there is provided a hand scanner device having a reading sensor which obtains image data of the original by manually moving the original in the sub-scanning direction. A sensor unit attached to a casing part that is manually moved in the sub-scanning direction to detect contact of an operator's hand, a movement detection unit to detect movement of the reading sensor, and a sensor unit to detect the operator's hand. Only when a contact is detected and the movement of the reading sensor is detected by the movement detecting means,
And a control unit that operates the reading sensor to start reading the document.

[0008]

In the hand scanner device of the present invention, the sensor means, which has a built-in reading sensor and is attached to the casing part which is manually moved in the sub-scanning direction, detects the contact of the operator's hand. The movement detecting means detects the movement of the reading sensor. The control means operates the reading sensor to start reading the original document only when the contact of the operator's hand is detected by the sensor means and the movement of the reading sensor is detected by the movement detecting means.

[0009]

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 hand scanner device of the present invention. A hand scanner 1 has a reading unit 11 and a speed detection device 12. Reference numeral 2 is a control unit that controls the driving of the reading unit 11, 3 is a signal detection unit that receives a signal from the touch sensor 4 and outputs a signal indicating contact / non-contact of the operator's hand to the control unit 2, and 4 is an operator. A touch sensor 5 that detects that the hand scanner 1 is gripped when scanning the hand scanner 1 is an image signal processing unit that processes an image signal input from the reading unit 11. The reading unit 11 includes a reading sensor unit 111 that converts an image into an image signal, and a sensor driving unit 112 that drives the reading sensor unit 111. The speed detection device 12 inputs from a speed sensor unit 121 that converts the speed of the hand scanner into an electric signal, a speed signal generation unit 122 that converts the electric signal from the speed sensor unit 121 into a speed signal VST, and the speed sensor unit 121. It comprises a line start detection unit 123 which generates a line start pulse LST based on the electric signal. The reading sensor unit 111 includes the LED array 11
3 is provided so that a document (not shown) is illuminated.

FIG. 2 is a diagram showing a detailed example of the hand scanner 1 shown in FIG. 31 is a rotatable 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, the original 1
The diameter of the roller 32 is set so as to coincide with the read line next to 00. Further, the lower end of the moving roller 32 slightly projects from the reading unit 11 toward the document side, so that the moving roller 32 alone can smoothly move on the document 100. 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 37. Further, in this example, the touch sensor 4 is attached to the outside of the housing of the hand scanner 1, and when the operator holds the hand scanner 1, the touch sensor 4 detects it.

FIG. 3 is a block diagram showing a detailed example of the control unit 2 shown in FIG. Reference numeral 6 is an AND circuit that takes an AND condition between the signal output from the signal detection unit 3 and the signal output from the speed signal generation unit 122, and 7 is a CPU that performs image reading control, image reading start and stop control, and the like.

Next, the operation of this embodiment will be described. When the operator holds the hand scanner 1 and places the hand scanner 1 on the original 100 to move the hand scanner 1, the moving roller 32 and the rotation shaft 31 thereof rotate. At this time, the touch sensor 4 detects that the operator's hand touches,
A signal corresponding to this is output to the signal detection unit 3. When the rotary shaft 31 rotates, the encoder plate 34 also rotates in synchronization with the rotation of the rotary shaft 31. The detector 35 detects passage of a slit provided in the rotating encoder plate 34 and converts it into an electric signal. This electric signal is input to the speed signal generator 122 and the line start detector 123. The line start detection unit 123 decodes the input signal, generates a line start pulse LST for each rotation angle of the moving roller 32 corresponding to one line scanning time, and outputs this to the control unit 2. .. The speed signal generator 122 monitors the input interval of the input signal, generates a speed signal VST, and outputs it to the AND circuit 6 of the controller 2. On the other hand, when the touch detection signal output from the touch sensor 4 is input to the signal detection unit 3, the output is set to a high level, so that the AND circuit 6 opens and the speed signal generation unit 1
The speed signal VST output from 22 is the AND circuit 6
Is input to the CPU 7 through. After the speed signal VST is input, the CPU 7 receives the line start detection unit 123.
When a line start pulse LST is input from the reading driving section 112, the reading sensor section 111 is caused to start reading an original document via the sensor driving section 112. As a result, the reading sensor unit 111 turns on the LED array 113, and the original 100
The reflected light from is photoelectrically converted to start the charge accumulation. When the hand scanner 1 moves by one line and the next line start pulse LST is output from the line start detection unit 123, the CPU 7 causes the sensor drive unit 112 to image the accumulated charge in front of the read sensor unit 111. A signal is output to the image signal processing unit 5.

Here, when the touch sensor 4 does not detect the contact of the operator's hand, the output of the signal detecting section 3 becomes low level, and the AND circuit 6 is closed. Therefore, even if the hand scanner 1 moves over the document at this time and the speed signal VST is output from the speed signal generator 122, the speed signal VST is output to the AND circuit 6 to the CPU 7.
Since it is blocked by and is not input, even if a line start signal is input from the line start detection unit 123,
The CPU 7 drives the sensor driving unit 112 and does not start the reading of the reading sensor unit 111. On the contrary, since the touch sensor 4 detects the contact of the operator's hand,
The output of the signal detector 3 goes high and the AND circuit 6
Even if is open, the speed signal VST is not output from the speed signal generation unit 122 if the hand scanner 1 is not moving. Therefore, in this case as well, the speed signal VS is sent to the CPU 7.
T will not be input. Therefore, even in such a case, the CPU 7 does not drive the sensor driving unit 112 to start the reading of the reading sensor unit 111.

According to this embodiment, the operator holds a specific position of the hand scanner 1 (a position where the touch sensor 4 is touched), and the hand scanner 1 is used for the original 100, for example.
The speed signal VST is not input to the CPU 7 unless the user moves above, so that the reading of the reading sensor unit 111 is not started. Therefore, for example, the operation of reading an image is performed only by unintentionally holding the hand scanner 1. However, the hand scanner 1 does not have the hand scanner 1, but the hand scanner 1 is, for example, the original 100.
The image reading operation is not performed even when the user moves up or the like, and it is possible to prevent the inconvenience of unnecessarily reading an unnecessary image by the hand scanner 1 unlike the related art.

[0015]

As described above, according to the hand scanner device of the present invention, the reading operation is performed only while the operator is holding the hand scanner and scanning the original, thereby eliminating unnecessary portions. You can prevent it from being read easily.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a detailed example of the hand scanner shown in FIG.

3 is a diagram showing a detailed example of a control unit shown in FIG.

FIG. 4 is a diagram showing a configuration example of a conventional hand scanner.

FIG. 5 is a diagram showing a control system of a conventional hand scanner device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hand scanner 2 ... Control part 3 ... Signal detection part 4 ... Touch sensor 5 ... Image signal processing part 6 ... AND circuit 7 ... CPU 11 ... Reading part 12 ... Speed detection device 111 ... Reading sensor part 112 ... Sensor drive part 122 … Speed signal generator 123… Line start detector

Claims (1)

[Claims] 1. A hand scanner device having a reading sensor for obtaining image data of the original by manually moving the original on the original in the sub-scanning direction, and manually moving in the sub-scanning direction by incorporating the reading sensor. A sensor unit attached to the housing for detecting contact of an operator's hand, and a movement detecting unit for detecting movement of the reading sensor;
Control means for operating the reading sensor to start reading the document only when the contact of the operator's hand is detected by the sensor means and the movement of the reading sensor is detected by the movement detecting means. A hand scanner device characterized by being provided.