Multi-mode scanning device for performing invisible light reflection

Abstract

The present invention provides a multi-mode scanning device for scanning a manuscript, and comprises a background component, a first light source, a second light source and an optical module. The first light source emits visible light to illuminate the background component and the manuscript to generate a first light and a second light respectively. The second light source emits invisible light to illuminate the combination of the background component and the manuscript to generate a third light and a fourth light, and the background component reflects the invisible light. The optical module receives the first light, the second light, the third light and the fourth light to generate a plurality of sensing signals, thereby obtaining visible light information and invisible light information representing the manuscript based on these sensing signals. The manuscript is located between the background component and the optical module, and the first light source, the second light source and the optical module are located on the same side of the background component.

Description

Technical Field

[0001] The present invention relates to a multi-mode scanning device for performing invisible light reflection, and in particular to a multi-mode scanning device for performing invisible light reflection by utilizing a background component to transmit invisible light and utilizing the background component to reflect visible light. Background Art

[0002] When a traditional scanner scans a document with holes, the visible light image obtained will appear completely black at the corresponding hole. If the user prints out this image, a lot of toner will be wasted on printing the completely black hole image. Currently, the copiers on the market directly print out the completely black hole image. Although the holes can be removed through image processing software, such subsequent processing is not accurate and takes up a lot of performance, wasting the user's time, and is a hindrance to users who are not familiar with computers.

[0003] On the other hand, although you can use the preview scan to set the boundaries of the selection to avoid scanning holes or damaged areas, if the information next to the holes is not scanned, the scan will be incomplete, and this operation method is also quite complicated.

[0004] Currently, users have an increasing demand for the functions of scanners or multifunction printers. Therefore, how to provide a scanning device that not only has the function of scanning visible light images of documents, but also can obtain contour information and even repair images of holes is actually a problem that the present invention needs to solve. Summary of the invention

[0005] Therefore, an object of the present invention is to provide a multi-mode scanning device that performs invisible light reflection, which not only has the function of scanning the visible light image of the document, but also can utilize the correction components necessary for the visible light image in conjunction with the invisible light source to obtain the invisible light (contour) information, and even repair the image of the hole.

[0006] In order to achieve the above-mentioned object, the present invention provides a multi-mode scanning device for scanning a manuscript, and comprises a background component, a first light source, a second light source and an optical module. The first light source emits visible light to illuminate the background component and the manuscript, thereby generating a first light and a second light respectively. The second light source emits invisible light to illuminate the combination of the background component and the manuscript to generate a third light and a fourth light, and the background component reflects the invisible light. The optical module receives the first light, the second light, the third light and the fourth light to generate a plurality of sensing signals, thereby obtaining visible light information and invisible light information representing the manuscript based on these sensing signals. The manuscript is located between the background component and the optical module, and the first light source, the second light source and the optical module are located on the same side of the background component.

[0007] According to the above embodiments, a multi-mode scanning device for performing invisible light reflection can be provided, which not only has the function of scanning the visible light image of the document, but also can use the correction component necessary for the visible light image to cooperate with the invisible light source to obtain contour information, and even repair the image of the hole. The present invention uses a background component to solve the functions of background reference and contour information acquisition at the same time, uses the background component to transmit invisible light, and uses the background component to reflect visible light, which is conducive to the development of image scanning and image restoration technology.

[0008] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The specific implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings.

[0010] Figure 1A is a schematic diagram of a scanning device according to a preferred embodiment of the present invention;

[0011] Figure 1B yes Figure 1A A schematic diagram of a scanning device for performing visible light image scanning;

[0012] Figure 1C yes Figure 1A Schematic diagram of a scanning device for performing visible light calibration;

[0013] Figure 1D yes Figure 1A A schematic diagram of a scanning device for performing invisible light image scanning;

[0014] Figure 2 yes Figure 1A A schematic diagram of a scanning device according to a first embodiment;

[0015] Figure 3 yes Figure 1A A schematic diagram of a scanning device according to a second embodiment;

[0016] Figure 4 yes Figure 1A A schematic diagram of a platform scanning device according to a third embodiment of the present invention.

[0017] Description of Figure Numbers:

[0018] D:Original;

[0019] D1, D2: tape;

[0020] H: Hole;

[0021] IVL: invisible light;

[0022] L1: first light;

[0023] L2: second light;

[0024] L3: third ray;

[0025] L4: fourth ray;

[0026] S1: sensing signal;

[0027] S2: correction signal;

[0028] VL: visible light;

[0029] 10: Background component;

[0030] 15: light-transmitting component;

[0031] 20: first light source;

[0032] 30: second light source;

[0033] 40: optical module;

[0034] 50: processor;

[0035] 60: scanning module;

[0036] 70: feeding mechanism;

[0037] 71,72,73,74: rollers;

[0038] 75: channel;

[0039] 80: light-transmitting platform;

[0040] 85: light-transmitting platform;

[0041] 90: driving mechanism;

[0042] 100: Multi-mode scanning device. DETAILED DESCRIPTION

[0043] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description.

[0044] The structures of all the following examples can be appropriately combined, replaced and modified to still achieve the effects of the present invention.

[0045] Currently, users have an increasing demand for the functions of scanners or multifunction printers. Users hope to use general scanners or multifunction printers to obtain visible light images of documents, preferably images that can repair holes, or obtain outline information of documents.

[0046] Figure 1A Schematic diagram of a scanning device according to a preferred embodiment of the present invention. Figures 1B to 1D They are Figure 1A Schematic diagram of a scanning device for performing visible light image scanning, visible light correction and invisible light image scanning. Since scanning in visible light and invisible light modes can be performed, the scanning device of this embodiment can be called a multi-mode scanning device. Figures 1A to 1D As shown, a multi-mode scanning device 100 is used to scan a manuscript D, and includes a background component 10, a first light source 20, a second light source 30, and an optical module 40. The above structure can be applied to feed-type and platform-type manuscript scanning. The upper side and the lower side of the manuscript D can be provided with light-transmitting platforms 85 and 80 to protect the background component 10 and the optical module 40 from interference by foreign objects brought into the manuscript D.

[0047] The background component 10 is opposite to the optical module 40. The first light source 20 emits visible light VL to illuminate the background component 10 and the manuscript D to generate a first light L1 and a second light L2 respectively. The second light source 30 emits invisible light IVL to illuminate the combination of the background component 10 and the manuscript D to generate a third light L3 and a fourth light L4. The second light source 30 emits the invisible light IVL in an obliquely upward direction, and the background component 10 reflects the invisible light IVL and propagates downward. The optical module 40 receives the first light L1, the second light L2, the third light L3 and the fourth light L4 to generate a plurality of sensing signals S1. Thus, the visible light information representing the manuscript D and the invisible light information representing the high contrast contour of the manuscript D are obtained according to these sensing signals S1. In this embodiment, the manuscript D is located between the background component 10 and the optical module 40, and the first light source 20, the second light source 30 and the optical module 40 are located on the same side of the background component 10.

[0048] According to the above structure, the effect of the present invention can be achieved. Not only can the visible light image of the document be scanned, but also the contour information can be obtained by using the correction components necessary for the visible light image in combination with the invisible light source, and even the contour information can be used to repair the image of the hole. The above structure is different from the traditional film scanner with defect repair function. The traditional scanner is a special machine, so no background component is set as the invisible light background or to reflect the invisible light.

[0049] It is worth noting that when scanning, the visible light source and the invisible light source can be turned on at the same time to allow the visible light receiving unit and the invisible light receiving unit of the optical module 40 to obtain visible light and invisible light signals in a time-sharing manner, or the visible light source and the invisible light source can be turned on in a time-sharing manner to perform time-sharing scanning.

[0050] The multi-mode scanning device 100 further includes a processor 50. In the calibration mode, the first light source 20 emits visible light VL to illuminate the background component 10 to generate a first light beam L1 (see Figure 1B ), the optical module 40 receives the first light L1 and generates a correction signal S2, and the processor 50 performs optical correction according to the correction signal S2, that is, uses the background component 10 to perform optical correction (including brightness correction) of standard white (standard color). In one embodiment, repairing the image of the hole and obtaining the information of the outline of the document are executed in the processor 50. In another embodiment, repairing the image of the hole and obtaining the information of the outline of the document are executed in a computer, a business machine or a server (not shown) connected to the multi-mode scanning device 100.

[0051] For the sake of convenience, the first light beam L1 and the second light beam L2 are defined here. The visible light VL passes through the hole H of the original D to illuminate the background component 10 and generate the first light beam L1 (see Figure 1A or Figure 1C ), that is, after the visible light VL directly irradiates the background component 10, it will be reflected by the background component 10 to generate the first light L1. In the calibration mode, there is no original D, and the first light L1 is also generated (see Figure 1B ). In the case of the original D, the visible light VL directly penetrates the hole H and illuminates the background component 10, and the first light L1 is also generated (see Figure 1C On the other hand, when the manuscript D exists, the visible light VL irradiates the portion other than the hole H of the manuscript D (the portion without the hole, also called the solid portion) to generate the second light L2, that is, the visible light VL is reflected by the manuscript D to generate the second light L2 (see Figure 1C It is worth noting that when the light transmittance of the manuscript D is high, the visible light VL may also penetrate the manuscript D and be reflected by the background component 10 , and the light generated by penetrating the manuscript can also be called the second light L2 .

[0052] like Figure 1A and Figure 1DAs shown, the second light source 30 and the optical module 40 are located on the lower side of the background component 10, and the invisible light IVL irradiates the combination of the background component 10 and the original D to generate a third light ray L3 and a fourth light ray L4. The invisible light IVL from the second light source 30 is reflected by the background component 10 to generate a fourth light ray L4. The fourth light ray L4 penetrates the portion other than the hole H of the original D (the portion without a hole, also called the solid portion) to generate the third light ray L3, and the fourth light ray L4 directly penetrates the hole H of the original D. Since the hole H is completely transparent, it will not block the invisible light IVL. The intensity of the invisible light IVL is only reduced by the solid portion of the original D, so the portion with a hole and the portion without a hole can be clearly distinguished. Therefore, the information of the hole H can be clearly obtained, and the contour information of the original D can also be obtained at the same time. The invisible light IVL includes but is not limited to ultraviolet rays, infrared rays, and far infrared rays. Figure 1A In the embodiment, the combination of the first light source 20 and the optical module 40 may be referred to as a scanning module 60 .

[0053] Figure 2 yes Figure 1A A schematic diagram of a scanning device according to a first embodiment of the present invention. Figure 2 As shown, the multi-mode scanning device 100 further includes a feeding mechanism 70 for feeding the original document D through a passage 75 between the background component 10 and the optical module 40. The light-transmitting platforms 85 and 80 together form the passage 75. The second light source 30 is disposed between the background component 10 and the combination of the two light-transmitting platforms 80 and 85. Figure 2 As shown, the second light source 30 is disposed between the background component 10 and the light-transmitting platform 85, or between the background component 10 and the original document D. The feeding mechanism 70 includes rollers 71, 72, 73 and 74. Thus, the feeding type original document scanning can be completed.

[0054] Figure 3 yes Figure 1A A schematic diagram of a platform scanning device according to a second embodiment. Figure 3As shown, the present embodiment provides a multi-mode scanning device 100 for performing invisible light reflection, which is used to scan a manuscript D and includes a background component 10, a light-transmitting platform 80, a first light source 20, a second light source 30, and an optical module 40. The light-transmitting platform 80 carries the manuscript D so that the manuscript D is located between the light-transmitting platform 80 and the background component 10. It is worth noting that although the light-transmitting platform 85 is drawn in the drawings, the light-transmitting platform 85 can also be omitted as appropriate. The first light source 20 emits visible light VL to illuminate the background component 10 and the manuscript D to generate a first light L1 and a second light L2 respectively. The second light source 30 emits invisible light IVL to illuminate the combination of the background component 10 and the manuscript D to generate a third light L3 and a fourth light L4. The optical module 40 is movably arranged and receives the first light L1, the second light L2, the third light L3, and the fourth light L4 to generate a plurality of sensing signals S1. Thus, the visible light information and contour information representing the manuscript D can be obtained based on these sensing signals S1. The manuscript D is located between the background component 10 and the optical module 40, and the first light source 20, the second light source 30 and the optical module 40 are located on the same side of the background component 10. In this embodiment, a platform type scanning can be realized, wherein the first light source 20, the second light source 30, the optical module 40 and the background component 10 can all move, while the manuscript D is fixed. The first light source 20 and the second light source 30 are linear light sources. In addition, the multi-mode scanning device 100 further includes a driving mechanism 90, which drives the first light source 20, the second light source 30, the optical module 40 and the background component 10 to move relative to the fixed manuscript D and the light-transmitting platform 80. The background component 10 is separated from the manuscript D by a distance.

[0055] Figure 4 yes Figure 1A A schematic diagram of a platform scanning device according to a third embodiment of the present invention. Figure 4 As shown, this embodiment is similar to Figure 3 , the difference is that the driving mechanism 90 drives the first light source 20, the second light source 30 and the optical module 40 to move relative to the stationary original D and the background component 10. In this embodiment, flatbed scanning can be achieved, and the coverage range of the background component 10 is greater than or equal to the scanning range of the scanning device.

[0056] According to the above-mentioned embodiments, a multi-mode scanning device that performs invisible light reflection can be provided, which not only has the function of scanning the visible light image of the document, but also can use the correction components necessary for the visible light image in conjunction with the invisible light source to obtain contour information, and even repair the image of the hole. In the conventional technology, the background component (especially the background component for correction) is not used to reflect the invisible light to provide contour information. The present invention overcomes the prejudice of the conventional technology and adopts the background component to solve the functions of background reference and contour information capture at the same time. The background component is used to transmit invisible light, and the background component is used to reflect visible light, which is conducive to the development of image scanning and image restoration technology.

[0057] The specific embodiments proposed in the detailed description of the preferred embodiments are only used to facilitate the explanation of the technical content of the present invention, and the present invention is not limited to the above embodiments. Various changes and implementations made without exceeding the spirit of the present invention and the scope of the following patent applications are within the scope of the present invention.

Claims

1. A multi-mode scanning device for scanning a manuscript, characterized in that: Include: Background components; A first light source emits visible light to illuminate the background component and the manuscript to generate a first light beam and a second light beam respectively; a second light source, the second light source being located between the manuscript and the background component and being located on both sides of the manuscript together with the first light source, the second light source emitting invisible light to illuminate the combination of the background component and the manuscript to generate a third light and a fourth light, and the background component reflects the invisible light; as well as An optical module receives the first light, the second light, the third light and the fourth light to generate a plurality of sensing signals, thereby obtaining visible light information and contour information representing the original document according to the plurality of sensing signals, wherein the original document is located between the background component and the optical module, and the first light source, the second light source and the optical module are located on the same side of the background component, wherein the light path of the invisible light from the second light source to the lower side of the background component and the optical module are located on different sides of the original document.

2. The multi-mode scanning device according to claim 1, characterized in that: It also includes a processor, wherein in a calibration mode, the first light source emits the visible light to illuminate the background component to generate the first light, the optical module receives the first light to generate a calibration signal, and the processor performs optical calibration according to the calibration signal.

3. The multi-mode scanning device according to claim 1, characterized in that: The invisible light from the second light source is reflected by the background component to generate the fourth light, the fourth light penetrates the physical part of the manuscript to generate the third light, and the fourth light directly penetrates the hole of the manuscript.

4. The multi-mode scanning device according to claim 1, characterized in that: The invention also comprises a feeding mechanism for feeding the original document through a passage between the background component and the optical module.

5. The multi-mode scanning device according to claim 4, characterized in that: It also comprises two light-transmitting platforms, which form the channel.

6. The multi-mode scanning device according to claim 5, characterized in that: The second light source is arranged between the background component and the combination of the two light-transmitting platforms.

7. The multi-mode scanning device according to claim 1, characterized in that: The visible light passes through the hole of the manuscript and irradiates the background component to generate the first light, and the visible light irradiates the part other than the hole of the manuscript and generates the second light.

8. The multi-mode scanning device according to claim 1, characterized in that: Also includes: A light-transmitting platform, carrying the original manuscript; and The driving mechanism drives the first light source, the second light source, the optical module and the background component to move relative to the manuscript.

9. The multi-mode scanning device according to claim 1, characterized in that: Also includes: A light-transmitting platform, carrying the original manuscript; and The driving mechanism drives the first light source, the second light source and the optical module to move relative to the manuscript and the background component.

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