JPH09163096A - Laser hand scanner - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] To provide a small, lightweight, and portable laser hand scanner. A rotary polygon mirror (scanner) 23 is provided inside a laser hand scanner 3 that moves in a sub-scanning direction 8. Further, a laser oscillator 21 is provided inside the laser hand scanner 3, and the light beam 4 oscillated from the laser oscillator 21 is condensed by a condenser lens 22 and then incident on a rotary polygon mirror 23. The light beam 4 incident on the rotary polygon mirror 23 is reflected by the rotary polygon mirror 23, and the original 1 is scanned in the main scanning direction 7 with a desired scan angle 5 and scan width 6. Further, inside the laser hand scanner 3, there is provided a light receiving sensor 24 which receives the reflected light from the document 1 and photoelectrically converts it. Also, laser hand scanner 3
Further, an acceleration sensor which is a reading position detecting means is provided. A read data memory unit, an electric circuit, etc. are built in the laser hand scanner 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser hand scanner that manually reads document information optically.

[0002]

2. Description of the Related Art In recent years, with the development of personal computers and word processors, a hand scanner has been developed and put into practical use as a method for easily inputting image and character information. Hereinafter, an example of a conventional hand scanner will be described with reference to the drawings.

FIG. 8 is a basic configuration diagram showing a conventional hand scanner. As shown in FIG. 8, the hand scanner body 8
An LED array 82 is provided in the front part of 0, and the reading position 83 on the original 81 can be illuminated by the LED array 82. Also,
At the front part inside the hand scanner body 80, the LED array 8
A mirror 84 is provided in the vicinity of 2, so that the light reflected vertically upward at the reading position 83 can be refracted by 90 ° and guided to a horizontal optical path 85 leading to the rear portion in the hand scanner main body 80. There is. A reduction lens 86 is provided in the middle of the horizontal optical path 85, and a one-dimensional image sensor 87 is provided at the rear of the hand scanner body 80. As a result, the light guided to the horizontal optical path 85 is condensed by the reduction lens 86 and then read by the one-dimensional image sensor 87. A rotary encoder 88 is provided in the hand scanner main body 80, and a read timing pulse is generated from the rotary encoder 88 every time the hand scanner main body 80 moves 125 μm in the sub-scanning direction 89.

The operation of the hand scanner configured as described above will be described below. Hand scanner body 80
When the document 81 is scanned, the LED array 82
Illuminates the reading position 83 on the original 81. The light reflected at the reading position 83 is reflected again by the mirror 84, guided to the horizontal optical path 85 in the main body 80 of the hand scanner, condensed by the reduction lens 86, and then read by the one-dimensional image sensor 87. For example, when reading at a resolution of 8 lines / mm, the light receiving pixel size of the one-dimensional image sensor 87 is 125 in the main scanning direction and 125 in the sub scanning direction 89, respectively.
It is set to less than μm. If the hand scanner main body 80 is moved in the sub-scanning direction 89 in this state, a read timing pulse is generated from the rotary encoder 88 every time the hand scanner main body 80 moves by 125 μm.
Readings are taken every 25 μm. As a result, the character pattern or the like on the original 81 is 8 lines / m in the sub-scanning direction 89.
It can be read with an accuracy of m (for example, "Transistor SPECIAL" No. 33 PP. 126-12).
8).

[0005]

However, in the above configuration, the volume of the rotary encoder 88 for detecting the reading position 83 becomes large, and the LED array 82 is used as the illuminating means of the original 81 to be read. Therefore, it has been difficult to realize a small, lightweight and portable hand scanner.

In order to solve the above problems in the prior art, it is an object of the present invention to provide a small, lightweight, portable laser hand scanner.

[0007]

In order to achieve the above object, a laser hand scanner according to the present invention has a reading position detecting means for detecting a reading position of document information, a laser oscillator for oscillating a light beam, A scanner for scanning a light beam oscillated from the laser oscillator on a document at a desired scan angle and scan width at least substantially perpendicularly to the moving direction of the laser hand scanner body, and receives reflected light from the document. A light receiving sensor for photoelectrically converting the light beam at a desired timing every time the light beam scans one line to obtain document information as an electric signal, and a read data memory unit for storing the document information are provided.

Further, in the structure of the present invention, it is preferable that the light receiving sensor operates in the charge storage mode. Further, in the above-mentioned configuration of the present invention, it is preferable that the reading position detecting means is an acceleration sensor.

Further, in the above configuration of the present invention, it is preferable that the reading position detecting means is an angular velocity sensor.
Further, in the configuration of the present invention, the light beam scans two columns in a one-dimensional manner substantially perpendicularly to the moving direction of the laser hand scanner main body, and one column of the two columns of scanning light is This is the first scanning light for reading document information,
The other one row is preferably the second scanning light for reading position detection.

Further, in the above-mentioned structure of the present invention, the light beam scans a plurality of columns in a one-dimensional manner substantially perpendicularly to the moving direction of the laser hand scanner main body, and among the scanning lights of the plurality of columns, It is preferable that at least one column is the first scanning light for reading the document information, and the scanning light group other than the first scanning light is the second scanning light for detecting the reading position.

Further, in the structure of the present invention, the light beam scans two columns in two dimensions, and one of the two columns of scanning light is substantially perpendicular to the moving direction of the laser hand scanner body. Is the first scanning light for reading the document information, and the other one column is the second scanning light for reading the reading position which scans substantially parallel to the moving direction of the laser hand scanner body. preferable.

Further, in the structure of the present invention, the light beam scans a plurality of rows in a two-dimensional manner, and at least one of the plurality of rows of scanning light is substantially in the moving direction of the laser hand scanner main body. It is a first scanning light for reading document information that is vertically scanned, and a scanning light group other than the first scanning light is a first scanning light for scanning a scanning position that scans substantially parallel to the moving direction of the laser hand scanner body. 2 scanning light is preferable.

Further, in the above-mentioned constitution of the present invention, it is preferable that the light beam is an infrared laser beam. Further, in this case, after the reading of the document information is completed, the scanning of the light beam is stopped, the read data stored in the read data memory section is placed on the light beam, and the display function and the printing are performed by infrared wireless communication (IrDA). It is preferable that the apparatus further comprises means for transmitting data to a device having at least one function selected from the group consisting of a function and a transmission function.

[0014]

According to the configuration of the present invention, a reading position detecting means for detecting a reading position of original information, a laser oscillator for oscillating a light beam, and a laser for emitting a light beam from the laser oscillator. A scanner for scanning an original at a desired scanning angle and scanning width at least approximately perpendicular to the moving direction of the hand scanner main body, and a reflected light from the original is received, and each time the light beam scans one line. The following operation can be achieved by including the light receiving sensor that photoelectrically converts the document information as an electric signal at a desired timing and the read data memory unit that stores the document information. That is, by adjusting the distance between the laser hand scanner main body and the original so that the scanning width of the light beam on the original becomes equal to or larger than the maximum length in the scanning direction of the original information, the size of the character pattern on the original is reduced. It can be read with the same resolution ratio regardless. Further, since the information written on the original can be read by one laser oscillator and one light receiving sensor, a small, lightweight, and portable laser hand scanner can be realized.

Further, in the above-mentioned configuration of the present invention, according to the preferable example in which the light receiving sensor operates in the charge storage mode, the reading sensitivity is improved. Further, in the configuration of the present invention, according to the preferable example in which the reading position detecting means is the acceleration sensor, it is possible to correct and control the fluctuation of the moving speed of the main body of the laser hand scanner during the reading operation.

Further, in the above-mentioned structure of the present invention, according to a preferable example in which the reading position detecting means is an angular velocity sensor, it is possible to correct and control the shake in the moving direction of the laser hand scanner main body during the reading operation.

Further, in the above-mentioned structure of the present invention, the light beam scans two columns in a one-dimensional manner substantially perpendicular to the moving direction of the main body of the laser hand scanner. According to a preferable example in which the row is the first scanning light for reading the document information and the other row is the second scanning light for the reading position detection, the second scanning light for the reading position detection is used. The image signal of the read original information and the image signal of the original information read by the first scanning light for reading the original information are compared and determined, and when the both image signals are the same, the first original information for reading the original information is read. Reading of the document information can be started by the scanning light. As described above, one laser oscillator can be provided with an illumination function for detecting the reading position and reading the document information, and it is not necessary to separately provide an illuminating unit for detecting the reading position. A laser hand scanner is realized.

Further, in the structure of the present invention, the light beam scans a plurality of columns one-dimensionally and substantially perpendicularly to the moving direction of the laser hand scanner main body, and at least the scanning light of the plurality of columns is scanned. According to a preferable example, one column is the first scanning light for reading the document information, and the scanning light group other than the first scanning light is the second scanning light for detecting the reading position. Since it is possible to bring the second scanning light for detecting the reading position to one line next to the first scanning light for scanning,
The image signal of the document information read by the scanning light of the above and the image signal of the document information read by the first scanning light for reading the document information are compared and determined line by line, and when both image signals are the same. The reading of the document information can be started by the first scanning light for reading the document information. As a result, it becomes possible to read the document information at high speed. Also in this case, one laser oscillator can be provided with an illumination function for detecting the reading position and reading the document information, and it is not necessary to separately provide an illumination unit for detecting the reading position.・
A lightweight laser hand scanner is realized.

Further, in the above-mentioned structure of the present invention, the light beam scans two columns in two dimensions, and one of the two columns of scanning light is substantially perpendicular to the moving direction of the laser hand scanner body. A preferable example in which the first scanning light is for scanning the document information to be scanned, and the other one column is the second scanning light for scanning the scanning position for scanning in substantially parallel to the moving direction of the laser hand scanner body. According to the document, the image signal of the document information read by the second scanning light for reading position and the image signal of the document information read by the first scanning light for reading the document information are By comparing and determining the black information signal, detecting the movement amount of the black information signal and detecting the reading position, the reading of the original information can be started by the first scanning light for reading the original information. Can. Also in this case,
One laser oscillator can be provided with an illumination function for reading position detection and document information reading, and there is no need to separately provide an illumination unit for reading position detection. Will be realized.

Further, in the structure of the present invention, the light beam scans a plurality of columns in a two-dimensional manner, and at least one of the plurality of columns of scanning light is substantially perpendicular to the moving direction of the laser hand scanner body. The first scanning light for reading the document information to be scanned in the second direction, and the scanning light group other than the first scanning light is the second scanning light for scanning the scanning position substantially parallel to the moving direction of the laser hand scanner main body. According to the preferable example of the scanning light of No. 2, since it is possible to scan the plural rows of the second scanning light in order to detect the reading position, the probability that the laser hand scanner body encounters the document information becomes high. As a result, the reading accuracy of the document information is improved. Also in this case, one laser oscillator can be provided with an illumination function for detecting the reading position and reading the document information, and it is not necessary to separately provide an illumination unit for detecting the reading position.・ A lightweight laser hand scanner is realized.

According to a preferred example of the configuration of the present invention, wherein the light beam is infrared laser light,
Data can be transmitted to a device having a display function or the like by infrared wireless communication (IrDA).

[0022]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. <First Embodiment> FIG. 1 is a conceptual diagram of document information reading in a first embodiment of a laser hand scanner according to the present invention, and FIG. 2 is an internal configuration diagram of the laser hand scanner. As shown in FIGS. 1 and 2, a rotary polygon mirror 23, which is a scanner, is provided inside the laser hand scanner 3 that moves in the sub-scanning direction 8. In addition, a laser oscillator 21 is provided inside the laser hand scanner 3, and a light beam 4 oscillated from the laser oscillator 21 is provided.
Is condensed by the condenser lens 22, and then the rotary polygon mirror 2
It is incident on 3. Then, the light beam 4 incident on the rotary polygon mirror 23 is reflected by the rotary polygon mirror 23, and a desired scanning angle 5 is obtained.
Then, the original 1 is scanned in the main scanning direction 7 with a scanning width of 6. Further, inside the laser hand scanner 3, a light receiving sensor 2 which receives the reflected light from the original 1 and photoelectrically converts it at a desired timing every time the light beam 4 scans one line.
4 are provided. Also, laser hand scanner 3
Is provided with an acceleration sensor (not shown) which is a reading position detecting means. Laser hand scanner 3
As shown in FIG. 1, it is formed in a portable shape such as a pen type, and a reading data memory unit, an electric circuit, etc. are built therein, but it is not specifically shown here. . 1 and 2, reference numeral 2 is a character pattern which is an example of document information written on the document 1.

The operation of the laser hand scanner configured as described above will be described below with reference to FIGS. 1 and 2. The light beam 4 oscillated from the laser oscillator 21 is condensed by a condenser lens 24 into a small spot diameter, and then enters a rotary polygon mirror 23 which is a scanner, and the rotary polygon mirror 23 scans the light beam at an angle Θ. 5, the original 1 is scanned in a one-dimensional Y-direction with a scanning width 6 having a length L.
Scan like Y '. At this time, the distance between the laser hand scanner 3 and the document 1 is adjusted so that the length L of the scanning width 6 is equal to or longer than the length y of the longest part of the character pattern 2 in the Y direction. In such an operation, since the reflectance of the character pattern 2 existing within the scanning width 6 is different between the black line portion and the blank portion, the reflected light of the light beam 4 scanned on the character pattern 2 is the information of the character pattern 2. Hold the light sensor 24
Is received by the The reflected light is photoelectrically converted by the light receiving sensor 24 every time the light beam 4 scans one line, and is stored in the read data memory unit. In this case, if the light receiving sensor 24 is operated in the charge storage mode, the reading sensitivity is improved. By repeating the operation of one line in the main scanning direction 7 while moving the laser hand scanner 3 in the sub scanning direction 8, the character pattern 2 written on the original 1 can be read. Further, the size of the character pattern 2 can be increased or decreased only by adjusting the distance between the laser hand scanner 3 and the document 1 so that the length L of the scanning width 6 becomes equal to or longer than the length y of the character pattern 2 in the Y direction. The same resolution ratio can be read regardless of.

As described above, according to this embodiment, one laser oscillator 21 and one light receiving sensor 24 are used to select any information written on a document regardless of the size of the document information to be read. Part can be read, small size
A lightweight and portable laser hand scanner is realized. Further, since the acceleration sensor is used as the reading position detecting means, it is possible to correct and control the fluctuation of the moving speed of the laser hand scanner main body during the reading operation.

Although the acceleration sensor is used as the reading position detecting means in the present embodiment, the reading position detecting means is not necessarily limited to the acceleration sensor and may be an angular velocity sensor, for example. If an angular velocity sensor is used as the reading position detecting means, it becomes possible to correct and control the shake in the moving direction of the laser hand scanner body during the reading operation.

<Second Embodiment> FIG. 3 is a conceptual diagram showing the scanning light on the surface of the original at the time of reading the original information in the second embodiment of the laser hand scanner according to the present invention. In FIG. 3, reference numeral 31 is a second scanning light for detecting a reading position, which is formed from the light beam 4, and 32 is a first scanning light for reading original information, which is formed from the light beam 4. The structure of this embodiment is different from that of the first embodiment in that the light beam 4
Are scanned one-dimensionally in two columns perpendicularly to the moving direction of the laser hand scanner 3 (sub-scanning direction 8), and one column indicated by the scanning light 32 is the first for reading document information. This is the scanning light, and the other row indicated by the scanning light 31 is the second scanning light for reading position detection.
As described above, since one laser oscillator 21 is provided with the illumination function for detecting the reading position and reading the document information, a smaller and lighter laser hand scanner can be realized.

FIG. 4 is a block diagram showing a reading position detecting circuit. As shown in FIG. 4, the reading position detection circuit includes an image signal portion 41 by the second scanning light 31 for reading position detection and a memory portion 42 in which the image signal is stored.
And the comparison / determination unit 4 for comparing and determining the image signal already stored in the memory unit 42 and the image signal newly stored.
3 and a read signal generator 44 that generates a document information read start signal when the compared image signals are the same.
An image signal portion 45 by the first scanning light 32 for reading document information, a shift clock terminal 46 to which a clock signal for starting the reading operation of the light receiving sensor 24 (FIG. 2) is applied, and reading position detection Second scanning light 3 for
1 includes a scanning signal start terminal 47 to which a start signal for starting scanning is applied, and an image output terminal 48 for outputting the read document information.

Other configurations are the same as those of the first embodiment (FIG. 1, FIG.
Since it is the same as that of FIG. 2), the same portions are designated by the same reference numerals and the description thereof will be omitted. Hereinafter, the operation of the laser hand scanner configured as described above will be described with reference to FIGS. 3 and 4.

First, the laser hand scanner 3 and the original 1
Is adjusted so that the width L of the scanning light 32 for reading the document information is equal to or longer than the length y of the longest part of the character pattern 2 in the Y direction. At this time, the scanning light 31 for reading position detection
Has the same width L as the scanning light 32 for reading the document information. The interval between the scanning light 31 for reading position detection and the scanning light 32 for reading original information depends on the length y of the longest part of the character pattern 2 to be read or the width L of the scanning light 32 for reading original information. A distance of N lines is generated between the scanning light 31 for detection and the scanning light 32 for reading document information. When the clock signal and the start signal are applied to the shift clock terminal 46 and the scanning signal start terminal 47, respectively, the light receiving sensor 24 (FIG. 2) starts the reading operation, and the scanning light 31 for reading position detection first scans the character pattern 2. Scan the first line. Then, the image signal read by the scanning light 31 for reading position detection is stored in the memory unit 42. Next, when the laser hand scanner 3 moves one line in the sub-scanning direction 8, the scanning light 31 for reading position scanning scans the second line of the character pattern 2, and the image signal newly read by this scanning light 31 It is stored in the memory unit 42. The above operation is sequentially repeated, and after N lines, the scanning light 32 for reading the document information
When the first line of the character pattern 2 is scanned, the image signal read by the scanning light 32 for reading the document information and the scanning light 31 for reading position detection N lines before are read and stored in the memory unit 42. The comparison / determination device 43 compares and determines the existing image signal. If the two image signals are the same, the reading signal generator 44 generates a reading start signal, and the scanning light 3 for reading the document information is read.
Reading of the character pattern 2 by 2 is started. The document information read by the scanning light 32 for reading the document information is output from the image output terminal 48.

<Third Embodiment> FIG. 5 is a conceptual diagram showing scanning light on the surface of an original at the time of reading original information in a third embodiment of the laser hand scanner according to the present invention. In FIG. 5, 51 is a scanning light group formed from the light beam 4. The structure of this embodiment is different from the second embodiment in that the light beam 4 is one-dimensionally scanned in a plurality of columns perpendicularly to the moving direction of the laser hand scanner 3 (sub-scanning direction 8). (Scanning light group 51), of the scanning light group 51,
One column indicated by 51b is the first for reading document information.
That is, the plurality of columns indicated by 51a are the second scanning light group for reading position detection. Since other configurations are similar to those of the first and second embodiments (FIGS. 1, 2, and 4), the same parts are designated by the same reference numerals and the description thereof will be omitted.

The operation of the laser hand scanner configured as described above will be described below with reference to FIGS. 4 and 5. First, the distance between the laser hand scanner 3 and the document 1 is adjusted so that the width L of the scanning light group 51 is equal to or longer than the length y of the longest part of the character pattern 2 in the Y direction. Scanning light group 5
1 spreads in the X direction depending on the distance between the laser hand scanner 3 and the document 1. When the clock signal and the start signal are applied to the shift clock terminal 46 and the scanning signal start terminal 47, respectively, the light receiving sensor 24 (FIG. 2)
Starts the reading operation. First, the scanning light 51c which is a part of the second scanning light group 51a for detecting the reading position and which is adjacent to the first scanning light 51b for reading the document information by one line.
Scans the first line of character pattern 2. Then, the image signal read by the scanning light 51c for detecting the reading position is stored in the memory unit 42. Next, when the laser hand scanner 3 moves one line in the sub-scanning direction 8, the first scanning light 51b for reading the document information scans the first line of the character pattern 2. The image signal read by the first scanning light 51b for reading the document information and the image signal read by the scanning light 51c for reading position detection and stored in the memory unit 42 are compared by the comparison / determination unit 43. To be judged. If the two image signals are the same, the reading signal generator 44 generates a reading start signal, and the first scanning light 51 for reading the document information is read.
Reading of the character pattern 2 by b is started. The document information read by the first scanning light 51b for reading the document information is output from the image output terminal 48. In this position detection method, the most significant feature of providing the scanning light groups 51 in a plurality of rows perpendicularly to the moving direction (sub-scanning direction 8) of the laser hand scanner 3 is the laser hand scanner. Even if the width L of the scanning light group 51 is adjusted to be equal to or longer than the length y of the longest part of the character pattern 2 in the Y direction, the first scanning light for reading the original information can be obtained. The point is that the scanning light 51c for detecting the reading position can be always brought in adjacent to one line of 51b. Thereby, the image signal of the document information read by the second scanning light 51a for detecting the reading position and the image signal of the document information read by the first scanning light 51b for reading the document information are line by line. It is possible to start the reading of the original information by the first scanning light for reading the original information when both image signals are the same by comparison and determination. As a result, it becomes possible to read the document information at high speed.

In this embodiment, one row of scanning light 51b is used as the first scanning light for reading the document information, but it is not necessarily limited to this configuration.
You may use the scanning light of two or more lines. If two or more lines of scanning light are used to read the document information, the reading accuracy is improved.

<Fourth Embodiment> FIG. 6 is a conceptual diagram showing scanning light on the surface of an original at the time of reading original information in a fourth embodiment of the laser hand scanner according to the present invention. In FIG. 6, reference numeral 61 is a second scanning light for detecting a reading position, which is formed from the light beam 4, and 62 is a first scanning light for reading original information, which is formed from the light beam 4. The structure of this embodiment is different from that of the first embodiment in that the light beam 4 is two-dimensionally scanned in two columns, and the scanning direction is relative to the moving direction of the laser hand scanner 3 (sub-scanning direction 8). It is a direction (second scanning light 61) parallel to the vertical direction (first scanning light 62), the first scanning light 62 is scanning light for reading document information, and the second scanning light 61 is This is a point that is scanning light for reading position detection. Since other configurations are similar to those of the first and second embodiments (FIGS. 1, 2, and 4), the same parts are designated by the same reference numerals and the description thereof will be omitted.

The operation of the laser hand scanner configured as described above will be described below with reference to FIGS. 4 and 6. First, the distance between the laser hand scanner 3 and the document 1 is adjusted so that the width L of the first scanning light 62 for reading the document information is equal to or longer than the length y of the longest part of the character pattern 2 in the Y direction. Second scanning light 61 for reading position detection
Scans perpendicularly to the first scanning light 62 for reading the document information, that is, parallel to the moving direction of the laser hand scanner 3 (sub-scanning direction 8).
Clock signal and start signal are shift clock terminal 4
6. When applied to the scanning signal start terminal 47, the light receiving sensor 24 starts the reading operation, and first the second scanning light 61 for detecting the reading position scans the first line of the character pattern 2. Then, the image signal read by the second scanning light 61 for detecting the reading position is stored in the memory unit 42. Next, when the laser hand scanner 3 moves one line in the sub-scanning direction 8, the second scanning light 61 for reading position scans the second line of the character pattern 2 and is newly read by this scanning light 61. The stored image signal is stored in the memory unit 42. Among these two image signals, the black information signal of the character pattern 2 is compared and determined by the comparison and determination unit 43, and the moving amount of the black information signal is detected to detect the reading position. A reading start signal is generated by the reading signal generator 44 using the signal that detects the movement amount, and the first scanning light 6 for reading the document information is read.
Reading of the character pattern 2 by 2 is started. The document information read by the first scanning light 62 for reading document information is output from the image output terminal 48.

<Fifth Embodiment> FIG. 7 is a conceptual diagram showing scanning light on the surface of an original at the time of reading original information in a fifth embodiment of the laser hand scanner according to the present invention. In FIG. 7, 71 is a scanning light group for detecting the reading position, which is formed from the light beam 4, and 72 is a scanning light for reading the document information. The structure of this embodiment is different from that of the fourth embodiment in that the light beam 4 is two-dimensionally scanned in a plurality of columns, and the scanning direction is perpendicular to the moving direction of the laser hand scanner 3 (sub-scanning direction 8). Direction (first scanning light 72, one column) and a direction (second scanning light group 71) parallel to the first scanning light 7
2 has a document information reading function, and the second scanning light group 71
Has a reading position detection function. Since other configurations are similar to those of the fourth embodiment (FIGS. 1, 2, and 4), the same portions are designated by the same reference numerals and description thereof will be omitted.

The position detecting method using the laser hand scanner 3 constructed as described above is the same as that described in the fourth embodiment, but a plurality of rows are arranged to detect the reading position. By causing the second scanning light group 71 to scan, the probability that the laser hand scanner 3 encounters the character pattern 2 is increased, so that the reading accuracy of the document information is improved.

In this embodiment, one row of scanning light 72 is used as the first scanning light for reading the document information, but the scanning light 72 is not necessarily limited to this configuration.
Scanning light of more than one row may be used. If two or more lines of scanning light are used to read the document information, the reading accuracy is improved.

In the laser hand scanner 3 described in the first to fifth embodiments, it is preferable to use infrared laser light as the light beam 4 emitted from the laser oscillator 21. Then, in this case, after the reading of the document information is completed, the scanning of the light beam 4 is stopped, the read data stored in the read data memory unit is placed on the light beam, and the display function and the printing are performed by infrared wireless communication (IrDA). It is preferable to include means for transmitting data to a device having a function or a transmission function.

[0039]

As described above, according to the present invention,
Just adjust the distance between the laser hand scanner body and the document so that the scanning width of the light beam on the document is more than the maximum length of the document information. It can be read at the resolution ratio. Further, since the information written on the original can be read by one laser oscillator and one light receiving sensor, a small, lightweight, and portable laser hand scanner can be realized.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of reading document information in a first embodiment of a laser hand scanner according to the present invention.

FIG. 2 is an internal configuration diagram of a laser hand scanner according to the first embodiment of the present invention.

FIG. 3 is a conceptual diagram showing scanning light on a document surface at the time of reading document information in the second embodiment of the laser hand scanner according to the present invention.

FIG. 4 is a block diagram showing a reading position detection circuit of the present invention.

FIG. 5 is a conceptual diagram showing scanning light on a document surface at the time of reading document information in a third embodiment of the laser hand scanner according to the present invention.

FIG. 6 is a conceptual diagram showing scanning light on a document surface at the time of reading document information in a fourth embodiment of the laser hand scanner according to the present invention.

FIG. 7 is a conceptual diagram showing scanning light on a document surface at the time of reading document information in a fifth embodiment of the laser hand scanner according to the present invention.

FIG. 8 is a basic configuration diagram of a conventional hand scanner.

[Explanation of symbols]

 1 original 2 character pattern 3 laser hand scanner 4 light beam 5 scanning angle 6 scanning width 7 main scanning direction 8 sub-scanning direction 21 laser oscillator 22 condensing lens 23 rotating polygon mirror 24 light receiving sensor 31 scanning light for reading position detection 32 original information Scanning light for reading 41 Image signal section by scanning light for reading position detection 42 Memory section 43 Comparison judgment device 44 Reading signal generator 45 Image signal section by scanning light for reading original information 46 Shift clock terminal 47 Scanning signal start terminal 48 Image output Terminal 51 Scanning light group 51a Position detecting scanning light group 51b Document reading scanning light group 51c Position detecting scanning light 61 Position detecting scanning light 62 Original reading scanning light 71 Position detecting scanning light group 72 Original reading scanning light

Claims (10)

[Claims] 1. A reading position detecting means for detecting a reading position of document information, a laser oscillator for oscillating a light beam, and a light beam oscillated from the laser oscillator,
A scanner for scanning an original at a desired scanning angle and scanning width at least substantially perpendicular to the moving direction of the laser hand scanner main body, and for receiving the reflected light from the original and scanning the light beam for one line. A laser hand scanner including a light receiving sensor for photoelectrically converting the original information as an electric signal at desired timing, and a read data memory unit for storing the original information. 2. The laser hand scanner according to claim 1, wherein the light receiving sensor operates in a charge storage mode. 3. The laser hand scanner according to claim 1, wherein the reading position detecting means is an acceleration sensor. 4. The laser hand scanner according to claim 1, wherein the reading position detecting means is an angular velocity sensor. 5. A light beam scans two columns one-dimensionally and substantially perpendicularly to the moving direction of the laser hand scanner main body, and one of the two columns of scanning light is for reading document information. The laser hand scanner according to claim 1, wherein the first scanning light is the second scanning light, and the other column is the second scanning light for detecting the reading position. 6. A light beam scans a plurality of columns one-dimensionally and substantially perpendicularly to a moving direction of a laser hand scanner main body, and at least one column of the plurality of columns of scanning light is for reading document information. The first scanning light of the
2. The laser hand scanner according to claim 1, wherein the scanning light group other than the scanning light is the second scanning light for reading position detection. 7. A document beam for two-dimensional scanning in a two-dimensional manner, and one row of the scanning light in the two rows scans substantially perpendicularly to the moving direction of the main body of the laser hand scanner. The laser hand scanner according to claim 1, wherein the first scanning light is the second scanning light, and the other one row is the second scanning light for detecting a reading position which scans substantially parallel to the moving direction of the main body of the laser hand scanner. 8. A light beam scans a plurality of columns two-dimensionally,
At least one row of the plurality of rows of scanning light is the first scanning light for reading document information that scans substantially perpendicularly to the moving direction of the laser hand scanner main body, and scanning other than the first scanning light is performed. 2. The laser hand scanner according to claim 1, wherein the light group is a second scanning light for scanning a reading position that scans substantially parallel to the moving direction of the main body of the laser hand scanner. 9. The laser hand scanner according to claim 1, wherein the light beam is infrared laser light. 10. After the completion of reading the document information, the scanning of the light beam is stopped, the read data stored in the read data memory section is placed on the light beam, and the display function, the print function and the display function are provided by infrared wireless communication (IrDA). The laser hand scanner according to claim 9, further comprising means for transmitting data to a device having at least one function selected from the group consisting of transmission functions.