CN111950541A

CN111950541A - Hand-held reader

Info

Publication number: CN111950541A
Application number: CN202010774104.3A
Authority: CN
Inventors: 贾飞飞
Original assignee: Beijing Hanwang Guocui Technology Co ltd
Current assignee: Beijing Hanwang Guocui Technology Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-11-17

Abstract

The invention discloses a handheld reader, which comprises a shell, a first camera module corresponding to a first reading mode and a second camera module corresponding to a second reading mode, wherein the shell is provided with a first image acquisition window corresponding to the first camera module and a second image acquisition window corresponding to the second camera module; the first camera module is arranged in the shell, the light entrance surface of the first camera module faces the first image acquisition window, and the first camera module comprises a first optical filter; the second camera module is arranged in the shell, the light entrance surface of the second camera module faces the second image acquisition window, and the second camera module comprises a second optical filter; the spectral band selected by the first optical filter is different from the spectral band selected by the second optical filter.

Description

Hand-held reader

Technical Field

The invention relates to the technical field of digital equipment, in particular to a handheld reader.

Background

Currently, the handheld readers on the market include a touch-and-talk pen, a scanning pen, and the like. The point-reading pen is matched with a sound book for use, the paper surface of the sound book is printed with invisible codes in carbon ink color, the image patterns of the invisible codes printed at different positions of the sound book are different, and each image pattern has a unique number. And when the reading pen reads different positions, reading the invisible codes at the corresponding positions, determining the numbers of the invisible codes according to the image patterns of the read invisible codes, and searching the matched sound files in a file library stored by the reading pen according to the numbers for playing. The scanning pen is mainly used for reading text contents, when the scanning pen reads a text printed on a paper surface, a text image can be collected through an image sensor of the scanning pen, and further through image splicing processing and algorithm identification, the text contents in the text image are obtained. The scanning pen can be divided into a quick recording pen, a translation pen and the like according to specific functions, and the quick recording pen is mainly used for recording and storing read text contents; the translation pen further processes the read text content, for example, performs operations such as translation, pronunciation, display, and the like.

In the prior art, in order to enable the touch and talk pen to accurately read the invisible codes on the paper surface, the touch and talk pen may employ an RGB image sensor and an infrared filter, and stray light except for carbon black in incident light is filtered out through the infrared filter, so that an image acquired by the RGB image sensor only includes the invisible codes of carbon black and black text content on the page. This means that, when the existing click-to-read pen is expected to be expanded to be used as a scanning pen, the scanning pen can only read black text content, but the recognition capability of color characters, characters with background colors, characters with textures and the like is poor, even the characters cannot be recognized at all, and the recognition rate of the scanning pen equivalent to a single function cannot be obtained. For the scanning pen in the prior art, the visible light filter is used for collecting text images, so only visible light can reach the image sensor for imaging, but the invisible code layer is an infrared layer and cannot reflect visible light, so that the existing scanning pen cannot read the invisible code at all, and the recognition rate of a point-and-read pen with a single function cannot be obtained.

Disclosure of Invention

It is an object of an embodiment of the present invention to provide a handheld reader that can support a plurality of reading modes and can obtain an identification rate of the handheld reader that supports only a single mode for each reading mode.

According to a first aspect of the present invention, there is provided a handheld reader comprising a housing, a first camera module corresponding to a first reading mode and a second camera module corresponding to a second reading mode, the housing being provided with a first image acquisition window corresponding to the first camera module and a second image acquisition window corresponding to the second camera module;

the first camera module is arranged in the shell, the light entrance surface of the first camera module faces the first image acquisition window, and the first camera module comprises a first optical filter;

the second camera module is arranged in the shell, the light entrance surface of the second camera module faces the second image acquisition window, and the second camera module comprises a second optical filter;

the spectral band selected by the first optical filter is different from the spectral band selected by the second optical filter.

Optionally, the first image capturing window is located at a first end of the housing, the second image capturing window is located at a second end of the housing, and the first end and the second end are opposite ends in the length direction of the housing.

Optionally, the first optical filter is a visible light filter, and the second optical filter is an infrared filter.

Optionally, a circuit board of the first camera module and the housing enclose a first optical cavity communicated with the first image acquisition window;

the handheld reader further comprises at least one first light supplement module corresponding to the first camera module, the first light supplement module is provided with an independent circuit board, and the circuit board of the first light supplement module is fixedly connected with the circuit board of the first camera module so as to fix the first light supplement module in the first optical cavity at a set angle.

Optionally, the angle is set such that the first image capturing window is completely located within an illumination range of the at least one first light supplement module.

Optionally, the set angle is such that the set included angle is greater than or equal to 30 degrees and less than or equal to 75 degrees, wherein the set included angle is an included angle between an optical axis of the corresponding first light supplement module and an optical axis of the first camera module.

Optionally, the set angle enables at least part of light emitted by the corresponding first light supplement module to be incident to the first image collection window after being reflected by the shell.

the handheld reader further comprises at least one first light supplement module corresponding to the first camera module, the at least one first light supplement module is set to provide a first path of light supplement light and a second path of light supplement light in a time-sharing mode, and the light supplement intensity of the first path of light supplement light is higher than that of the second path of light supplement light.

Optionally, the handheld reader further includes a photoelectric sensor for detecting an illumination intensity of the external light acting on the first optical cavity, and the photoelectric sensor is disposed in the first optical cavity.

Optionally, the housing forms a second optical cavity between the second camera module and the second image acquisition window;

the handheld reader further comprises at least one second light supplementing module corresponding to the second camera module, and the second light supplementing module is located in the second optical cavity.

Optionally, the handheld reader includes a first processor, the first camera module is connected to the first processor to send the acquired image data to the first processor, and the second camera module is connected to the first processor to send the acquired image data to the first processor.

Optionally, the handheld reader further comprises a second processor connected with the first processor; the first processor is configured to execute a first process, and the second processor is configured to execute a second process, wherein the first process includes identifying corresponding read contents from any of the image data and transmitting the read contents to the second processor; the second processing includes executing a setting operation to realize a corresponding read mode according to the read content provided by the first processor.

Optionally, the handheld reader further comprises a plurality of functional devices including a third processor and other devices connected to the third processor; the plurality of functional devices are connected to at least two circuit boards, which are disposed in the housing.

Optionally, the at least two circuit boards include a main circuit board provided with the third processor, the first camera module and the second camera module are respectively arranged on two sides of the main circuit board in the length direction of the housing, and the first camera module and the second camera module are both connected with the main circuit board;

the handheld reader also comprises a battery module, and the at least two circuit boards also comprise a first circuit board connected with the main circuit board; the first circuit board and the battery module are located on one side of the first surface of the main circuit board and are arranged in parallel with the main circuit board.

Optionally, the at least two circuit boards further include a second circuit board connected to the main circuit board, and the second circuit board and the main circuit board are respectively disposed on two sides of the battery module.

Optionally, the functional device arranged on the second circuit board at least comprises a key switch and an indicator light; the functional devices arranged on the first circuit board at least comprise interface devices and other key switches; the third processor is arranged to:

and under the condition of simultaneously receiving a signal triggered by a key switch on the second circuit board and a signal triggered by a key switch on the first circuit board, carrying out program updating processing.

Optionally, the housing includes a straight front cover plate and a rear housing with a curved surface, and the front cover plate and the rear housing are fastened together to form the housing;

the at least two circuit boards comprise a main circuit board provided with the third processor, and the main circuit board is arranged in parallel to the front cover plate;

the functional device further comprises a display screen, wherein the display screen is embedded on the front cover plate and is connected with the main circuit board.

The handheld reader has the advantages that the handheld reader has the two camera modules, the two camera modules have different optical filters, so that the two camera modules can correspond to different reading modes, and thus, a processor of the handheld reader can start the corresponding camera modules to work according to the current reading mode selected by a user, so that the handheld reader can obtain the best image acquisition effect in different reading modes, and further, the handheld reader can still obtain the recognition rate equivalent to that of a scanning pen, a touch-and-talk pen and the like which only support a single mode under the condition of supporting multiple reading modes.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is an exploded schematic view of a handheld reader according to one embodiment;

FIG. 2 is a schematic side view of the internal structure of the handheld reader of FIG. 1;

fig. 3 is a schematic view of a configuration of a first fill-in light module according to an embodiment;

fig. 4 is a schematic view of a configuration of a first fill-in light module according to an embodiment;

fig. 5 is a schematic view illustrating a configuration of a second fill-in light module according to an embodiment;

FIG. 6 is a block schematic diagram showing the internal structural components of a handheld reader in accordance with one embodiment;

fig. 7 is a flow diagram of a read control method of a handheld reader, according to one embodiment.

Description of reference numerals:

100-a housing; 110-a front cover plate;

120-rear shell; 131-a first image acquisition window;

132-a second image acquisition window; 141-a first optical cavity;

142-a second optical cavity; 111-sound outlet;

200-a first read module; 210-a first camera module;

220-a first light supplement module; 211-a circuit board of a first camera module;

f2-the optical axis of the first camera module; 221-a circuit board of the first light supplementing module;

f1-the optical axis of the first light filling module; 300-a second reading module;

310-a second camera module; 320-a second light supplement module;

400-a key circuit; 500-a speaker;

600-a microphone; 700-display screen;

800-a communication module; 900-battery module;

1000-charging circuit 1100-interface type device;

1200-an optical indication circuit; 1300-a memory;

u1-processor; c0 — main circuit board;

c1 — first circuit board; c2-second circuit board.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

< hand-held reader embodiment >

The disclosed embodiments provide a handheld reader capable of supporting two different reading modes, for example, a click-to-read mode and a scanning mode, so that the handheld reader has a click-to-read pen function and a scanning pen function, wherein the handheld reader can realize the click-to-read pen function by reading a invisible code printed on a paper surface, and can realize the scanning pen function by reading text contents on the paper surface.

FIG. 1 shows an exploded schematic view of a handheld reader, according to one embodiment. As shown in fig. 1, in the present embodiment, the handheld reader includes a first reading module 200 corresponding to a first reading mode and a second reading module 300 corresponding to a second reading mode, and the handheld reader further includes a housing 100, and the first reading module 200 and the second reading module 300 are disposed in the housing 100.

For example, the first reading module 200 corresponds to a scan mode, and therefore, the first reading module 200 may also be referred to as a scan module. For another example, the second reading module 300 corresponds to a touch reading mode, and therefore, the second reading module 300 may also be referred to as a touch reading module.

In this embodiment, the first reading module 200 includes the first camera module 210 shown in fig. 3, and the first camera module 210 may include a lens, an image sensor and a first optical filter, where the first optical filter is used to select a spectral band capable of being incident to a photosensitive area of the corresponding image sensor in the first reading mode, so as to improve the image recognition accuracy of the handheld reader in the first reading mode.

In this embodiment, the second reading module 300 includes a second camera module 310 as shown in fig. 5, where the second camera module 310 includes a lens, an image sensor and a second optical filter, and the second optical filter is used for selecting a spectral band capable of being incident to a photosensitive area of the corresponding image sensor in the second reading mode, so as to improve the image recognition accuracy of the handheld reader in the second reading mode.

In this embodiment, because the contents to be read in different reading modes have different characteristics, for example, the scanning mode needs to read text contents of various colors on the paper, and the click-to-read mode needs to read the invisible codes printed on the paper, the spectral band selected by the first optical filter is set to be different from the spectral band selected by the second optical filter, so that the contents to be read can be accurately identified through the images acquired by the corresponding camera modules in different reading modes.

Taking the first reading module 200 as a scanning module as an example, the first optical filter can be a visible light filter, the spectral band selected by the visible light filter is a visible light band, and the spectral transmittance of the rest bands is extremely low and almost zero. Here, since the RGB color standard corresponding to visible light includes almost all colors that can be perceived by human eyes, in this example, in the case of using a visible light filter, the image sensor of the first camera module 210 can obtain an image that is advantageous for accurately recognizing text contents of various colors on the paper surface.

Taking the second reading module 300 as a point-reading module as an example, the second optical filter may be an Infrared filter, the spectral band selected by the Infrared filter is an Infrared (IR) band, and the spectral transmittance for the rest bands is very low and almost zero. Thus, the image sensor of the second camera module 310 can obtain a black-and-white image beneficial to accurately identifying the invisible codes on the paper.

In this embodiment, the housing 100 may be configured in any shape with an elongated shape, such as a shape similar to a pen, for being held by hand, but not limited thereto.

In this embodiment, as shown in fig. 3, the casing 100 is provided with a first image collecting window 131, so that light reflected by the paper surface can be incident into the first camera module 210 through the first image collecting window 131, and further, the first camera module 210 collects the paper surface image.

In one embodiment, the first image capturing window 131 may be a rectangular opening, and the size of the first image capturing window 131 may be determined according to the size of the image captured each time.

In one embodiment, the handheld reader may further include a transparent shield disposed on the first image capture window 131, which is not limited herein.

In this embodiment, the light entering surface of the first camera module 210 needs to face the first image capturing window 131, wherein the light entering surface refers to a surface of the first camera module 210 for light to enter, so that light reflected by a paper surface entering through the first image capturing window 131 can enter the first camera module 210, and capturing of the paper surface image is achieved. The light entering the housing 100 through the first image collecting window 131 may be incident on the image sensor of the first camera module 210 for imaging through the filtering effect of the first optical filter of the first camera module 210. In this embodiment, as shown in fig. 3, the first image capturing window 131 may be located at a first end of the housing 100, the first end being an end of the housing 100 in the length direction. Thus, since the light-entering surface of the first camera module 210 needs to face the first image capturing window 131, as shown in fig. 1 and 2, for the strip-shaped inner cavity of the housing 100, wherein the strip-shaped inner cavity extends along the length direction of the housing 100, the first reading module 200 will be located at one end of the strip-shaped inner cavity corresponding to the first image capturing window 131. This kind of structural design not only is favorable to the user to implement the reading operation, is favorable to carrying out compact spatial layout moreover, realizes effectively utilizing the strip inner chamber to under the condition that sets up two reading modules, still can not influence hand-held type reader's overall dimension.

In other embodiments, the first image capturing window 131 may be located at other positions of the housing 100, and is not limited herein.

In this embodiment, as shown in fig. 5, the casing 100 is further provided with a second image collecting window 132, so that light reflected by the paper surface can be incident into the second camera module 310 through the second image collecting window 132, and further the second camera module 310 collects the paper surface image.

In an embodiment, the second image capturing window 132 may be a circular opening, for example, in a corresponding click-to-read mode of the second camera module, since the invisible code has a smaller size, the second image capturing window 132 may also have a smaller size than the first image capturing window 131.

In this embodiment, the light entering surface of the second camera module 310 needs to face the second image capturing window 132, wherein the light entering surface refers to a surface of the second camera module 310 for light to enter, so that light reflected by a paper surface entering through the second image capturing window 132 can enter the second camera module 310, and capturing of the paper surface image is achieved. The light entering the housing 100 through the second image capturing window 132 may be incident on the image sensor of the second camera module 310 for imaging through the filtering effect of the second optical filter of the second camera module 310.

In this embodiment, as shown in fig. 5, the second image capturing window 132 may be located at a second end of the casing 100, the second end being the other end of the casing 100 in the length direction, and the second end and the first end being opposite ends in the length direction of the casing 100. Thus, since the light-entering surface of the second camera module 310 needs to face the second image capturing window 132, as shown in fig. 1 and 2, for the strip-shaped cavity of the housing 100, the second reading module 300 will be located at one end of the strip-shaped cavity corresponding to the second image capturing window 132. This kind of structural design not only is favorable to the user to implement the reading operation, is favorable to carrying out compact spatial layout moreover, realizes effectively utilizing the strip inner chamber to under the condition that sets up two reading modules, still can not influence hand-held type reader's overall dimension.

In another embodiment, the second image capturing window 132 may be located at other positions of the housing 100, as long as it is separated from the first image capturing window 131 and is disposed at a different position of the housing 100, which is not limited herein.

The image sensor in this embodiment may be a CMOS image sensor, and the like, and is not limited herein.

In this embodiment, the handheld reader may support two reading modes, namely, a point reading mode and a scanning mode, where the first optical filter is a visible light filter matched with the scanning mode, and the second optical filter is an infrared filter matched with the point reading mode.

In other embodiments, the handheld reader may also support other reading mode combinations, and the corresponding optical filter may refer to the configuration of this embodiment, which is not described herein again.

According to the assembly requirement of the camera module, the light entering the first camera module 210 and the second camera module 310 will be incident on the photosensitive area of the corresponding image sensor through the corresponding first optical filter and the second optical filter. Therefore, in any reading mode, only the light rays which are allowed to pass through the corresponding first optical filter and the second optical filter can reach the photosensitive area of the corresponding image sensor for imaging, so that the optimal imaging effect in the reading mode is obtained, the reading content matched with the reading mode is favorably identified from the image, and the setting operation is further completed according to the reading content.

For example, when the current reading mode is the point reading mode, only the light in the IR band can reach the photosensitive area of the image sensor of the second camera module 310 through the second optical filter (infrared filter) to form an image, and then a black-and-white image composed of IR pixels is obtained, so as to read the carbon black invisible code on the paper surface.

For another example, when the current reading mode is the scanning mode, only light in the visible light band can reach the light-sensing area of the image sensor of the first camera module 210 through the first filter (visible light filter) to form an image, so as to read the text content of each color on the paper.

In one embodiment, for the first and

second camera modules

210 and 310, the optical filter may be located between the image sensor of the corresponding camera module and the lens of the corresponding camera module, that is, the filtering position is located between the image sensor and the lens, so as to filter the light incident to the image sensor.

In another embodiment, for the first camera module 210 and the second camera module 310, the optical filter may also be located between the lens of the corresponding camera module and the image capturing window of the corresponding camera module, that is, the filtering position is located between the lens and the image capturing window, so as to filter the light incident to the image sensor.

In one embodiment, as shown in fig. 3, the housing 100 forms a first optical cavity 141 between the first camera module 210 and the first image capturing window 131, i.e., the first optical cavity 141 is in communication with the first image capturing window 131. The lens, the first optical filter and the image sensor of the first camera module 210 are located in the first optical cavity 141, and when a user scans a text displayed on a paper surface or an electronic display screen, light reflected by the paper surface or light emitted and reflected by the electronic display screen enters the first optical cavity 141 through the first image collecting window 131 and further enters the first camera module 210 to realize image collection. In this embodiment, the light reflected off the paper or off the electronic display may include light originating from outside the handheld reading device.

In one embodiment, to prevent the user from scanning the wrong position, an indication line facing the text line may be marked on the outer side of the housing corresponding to the first image capturing window 131 for the user to confirm whether the first image capturing window 131 corresponds to the text line.

In one embodiment, the first optical cavity 141 may be enclosed by the housing 100 and a circuit board of the first camera module 210, wherein the image sensor of the first camera module 210 is disposed on the circuit board.

In one embodiment, the optical axis of the first camera module 210 may be perpendicular to the surface of the first image capturing window 131.

In one embodiment, the optical axis of the first camera module 210 may pass through the geometric center of the first image capturing window 131.

In an embodiment, as shown in fig. 3, the first reading module 200 may further include at least one first light supplement module 220 to supplement light when the first camera module 210 collects an image through the first light supplement module 220, where the first light supplement module 220 is located in the first optical cavity 141, and the first light supplement module 220 has an independent circuit board, that is, one first light supplement module 220 corresponds to one circuit board. Here, when the hand-held type reader was arranging in on the paper, because first image acquisition window 131 can be partly or whole sheltered from by the paper, consequently, the light of the environment that first camera module 210 was located is dark, and like this, it is favorable to improving the quality of gathering the image greatly to set up first light filling module 220 and gather the image for first camera module 210 and carry out the light filling. In this embodiment, the light reflected by the paper surface may include light from the first fill light module 220.

Under the condition that the first camera module 210 corresponds to the scan mode, the first light supplement module 220 can be a visible light supplement module for emitting visible light.

In this embodiment, the first light supplement module 220 serves as a light supplement light source of the first camera module 210, and the light emitted therefrom can reach the first image collection window 131.

The at least one first light supplement module 220 may be disposed around the first camera module 210. In one embodiment, at least one of the first light filling modules 220 may be located in a same middle cross section of the first camera module 210, wherein the middle cross section is a cross section passing through an optical axis of the first camera module 210, and the optical axis of the first camera module 210 is located in the middle cross section. The at least one first light supplement module 220 may be disposed on two sides of the first camera module 210, or on one side of the first camera module 210 in the middle cross section, which is not limited herein.

In one embodiment, as shown in fig. 4, the circuit board 221 of the first light filling module 220 may be fixedly connected to the circuit board 211 of the first camera module 210, so as to fix the first light filling module 220 in the first optical cavity 141 at a set angle. The connection structure is favorable for arranging the first light supplement module 220 in the first optical cavity 141 at any desired angle, as long as the relative position relationship between the circuit board 221 and the circuit board 211 is adjusted. For example, the circuit board 221 and the circuit board 211 may be vertically connected to obtain the set angle, and the like, which is not limited herein.

In an embodiment, the set angle of the first light filling module 220 in the first optical cavity 141 may enable the first image collecting window 131 to be completely located within an illumination range of the at least one first light filling module 220, that is, in this embodiment, the first image collecting window 131 should be located within an overall illumination range of the at least one first light filling module 220 without a shadow, so as to improve the illumination uniformity of the light source provided by the first light filling module 220 on the first image collecting window 131.

In one embodiment, as shown in fig. 4, the set angle of the first light filling module 220 in the first optical cavity 141 can make the set angle θ between the optical axis F1 of the first light filling module 220 and the optical axis F2 of the first camera module 210 be greater than 0 degree and smaller than 90 degrees. The setting angle of the first light filling module 220 in the first optical cavity 141 may also be such that the setting included angle θ is greater than or equal to 0 degree and less than or equal to 90 degrees. For example, the included angle θ may be greater than or equal to 30 degrees and less than or equal to 75 degrees. For another example, the included angle θ may be greater than or equal to 45 degrees and less than or equal to 60 degrees.

In this embodiment, the set included angle θ is set within the above range, such that the optical axis F1 of the first light supplement module 220 is inclined to the plane where the first image collecting window 131 is located, i.e. the optical axis F1 of the first light supplement module 220 is not parallel to the plane and not perpendicular to the plane, and the inclined arrangement enables the first light supplement module 220 to project a light spot with a suitable size on the paper surface, thereby obtaining higher brightness and better illumination uniformity.

In an embodiment, the setting angle of the first light filling module 220 in the first optical cavity 141 may also enable at least a portion of light emitted by the first light filling module 220 to be incident on the first image capturing window 131 after being reflected by the housing 100 (i.e., the inner wall of the housing 100). In this embodiment, the diffuse reflection effect of the inner wall of the casing 100 is utilized to provide the light supplement, so that a dark corner at one side of the corresponding first light supplement module 220 can be avoided, and the illumination uniformity is further improved.

The first reading module 200 includes at least one first light supplement module 220, and in the case that the first reading module 200 is a scanning module, the at least one first light supplement module 220 can be configured to provide light supplement of an intensity. In this case, since the paper text does not emit light when scanning the paper text, but reflects light incident on the paper, and the screen of the electronic device emits light when scanning the text on the electronic device, the fill-in light intensity required for scanning the paper text and the fill-in light intensity required for scanning the text on the electronic device are significantly different, so that the scanning module can only be well adapted to the scanning of the paper text, or to the scanning of the text on the electronic device, and cannot achieve a high recognition rate for both the paper text and the text on the electronic device. For example, if the fill light intensity of first fill light module is higher, then can have higher recognition rate to the paper text, to this kind of fill light intensity, when the text of scanning module on scanning electronic equipment, will lead to the image overexposure because fill light intensity is higher, and then lead to this kind of scanning module to have lower recognition rate to the text on the electronic equipment.

In order to enable the scanning module to have a higher recognition rate for both the paper text and the text on the electronic device, in an embodiment, the at least one first light supplement module 220 may be configured to provide two paths of light supplements in a time-sharing manner, and respectively provide a first path of light supplement and a second path of light supplement, where the light supplement intensity of the first path of light supplement is higher than the light supplement intensity of the second path of light supplement. In this embodiment, for example, the fill-in light intensity of the first path of fill-in light may be set according to the fill-in light intensity required for scanning a paper text, and the fill-in light intensity of the second path of fill-in light may be set according to the fill-in light intensity required for scanning a text on an electronic device.

In this embodiment, the handheld reader may control the at least one first light supplement module 220 to output the first path of light supplement when scanning, under the condition that the text type of the text to be scanned is determined to be a paper text, so that the handheld reader may scan the paper text in an environment where the first light supplement module 220 provides strong light supplement, and further obtain a recognition rate meeting requirements.

In this embodiment, the handheld reader may control the at least one first light supplement module 220 to output the second path of light supplement during scanning when it is determined that the text type of the text to be scanned is the text on the electronic device. In this way, the handheld reader can scan the text displayed on the screen of the electronic device in the environment where the first fill-in light module 220 provides weak fill-in light, and then obtain the recognition rate meeting the requirement.

In one embodiment, the handheld reader may be provided with a text type selection key for selecting a text type of the text to be scanned, for example, the handheld reader may determine that the text type of the text to be scanned is paper text in case of receiving a first selection signal triggered by the user through the text type selection key, and may determine that the text type of the text to be scanned is text on the electronic device in case of receiving a second selection signal triggered by the user through the text type selection key.

In this embodiment, the text type selection key may include a first key switch for triggering the first selection signal and a second key switch for triggering the second selection signal, or may include only one key switch, and the first selection signal or the second selection signal is triggered in a time-sharing manner by setting different triggering manners (for example, setting two triggering manners of a short press and a long press) to multiplex the key switches, which is not limited herein.

In an embodiment, the handheld reader may also automatically identify the text type of the text to be scanned according to the illumination intensity in the first optical cavity 141 when the first fill-in module 220 is not turned on, for example, if the illumination intensity in the first optical cavity 141 is less than or equal to a set threshold, the text type is determined to be a paper text, and if the illumination intensity in the first optical cavity 141 is greater than the set threshold, the text type is determined to be a text on the electronic device, and the like. To this end, the handheld reader may further include a photoelectric sensor for detecting the illumination intensity of the external light acting on the first optical cavity 141, and the photoelectric sensor is disposed in the first optical cavity 141, wherein the illumination intensity of the external light acting on the first optical cavity 141 is the illumination intensity of the first optical cavity 141 when the first light supplement module 220 is not in operation. The external light is light outside the handheld reader and at least comprises light reflected by a paper surface or light emitted and reflected by an electronic display screen.

When the text type of the text to be scanned is a paper text, when the user places the handheld reader on a paper surface, the illumination intensity in the first optical cavity 141 is weak, at this time, the illumination intensity reflected by the electrical signal output by the photoelectric sensor is less than or equal to the set threshold, and when the text type of the text to be scanned is a text on the electronic device, since the display screen of the electronic device emits light, when the user places the handheld reader on the display screen, the illumination intensity in the first optical cavity 141 is strong, at this time, the illumination intensity reflected by the electrical signal output by the photoelectric sensor is greater than the set threshold, so that the illumination intensity in the first optical cavity 141 can be determined according to the intensity of the electrical signal output by the photoelectric sensor, and the text type of the text to be scanned can be determined.

In this embodiment, the photo sensor may be, for example, a photo resistor, wherein a resistance value of the photo resistor has a specific corresponding relationship with the illumination intensity, and the greater the illumination intensity, the smaller the resistance value, the smaller the illumination intensity, and the greater the resistance value, so that the resistance value of the photo resistor can be determined according to the electrical signal output by the detection circuit where the photo resistor is located, and compared with the set resistance value, wherein the resistance value is greater than or equal to the set resistance value, which represents that the illumination intensity is less than or equal to the set threshold value, the resistance value is less than the set resistance value, which represents that the illumination intensity is greater than the set threshold value.

In one embodiment, the handheld reader may be configured to output currents with different intensities to the first light supplement module 220, so that the at least one first light supplement module 220 provides the first path of light supplement light and the second path of light supplement light in a time-sharing manner.

In an embodiment, the first light supplement module 220 may also include a first light supplement lamp and a second light supplement lamp, wherein the light supplement intensity of the first light supplement lamp is higher than the light supplement intensity of the second light supplement lamp. In this embodiment, the handheld reader may be configured to turn on the first light supplement lamp and turn off the second light supplement lamp by controlling the at least one first light supplement module 220, so that the at least one first light supplement module 220 provides the first light supplement lamp, and turn on the second light supplement lamp and turn off the first light supplement lamp by controlling the at least one first light supplement module 220, so that the at least one first light supplement module 220 provides the second light supplement lamp. For example, the fill-in light intensity of the first path of fill-in light lamp can be set according to the fill-in light intensity required by scanning a paper text, and the fill-in light intensity of the second path of fill-in light lamp can be set according to the fill-in light intensity required by the text displayed on the scanning screen.

In one embodiment, the first reading module 200 includes at least two first light supplement modules 220, and the handheld reader may be configured to control the number of the turned-on first light supplement modules 220, so that the at least two first light supplement modules 220 can provide the first path of light supplement and the second path of light supplement in a time-sharing manner, and the first path of light supplement is greater than the second path of light supplement. For example, when the first path of light supplement is required to be provided, the number of the first light supplement modules 220 required to be turned on is M, and when the second path of light supplement is required to be provided, the number of the second light supplement modules 220 required to be turned on is N, where M is greater than N.

In one embodiment, as shown in fig. 5, the housing 100 forms the second optical cavity 142 between the second camera module 310 and the second image capturing window 132, i.e., the second optical cavity 142 is in communication with the second image capturing window 132. The lens, the second optical filter and the image sensor of the second camera module 310 are located in the second optical cavity 142, and the light reflected by the paper surface enters the second optical cavity 142 through the second image collecting window 132 and further enters the second camera module 310 to realize image collection.

In one embodiment, the second optical cavity 142 may be enclosed by the housing 100 and a circuit board of the second camera module 310, wherein the image sensor of the second camera module 310 is disposed on the circuit board.

In one embodiment, the optical axis of the second camera module 310 may be perpendicular to the surface of the second image capturing window 132.

In one embodiment, the optical axis of the second camera module 310 may pass through the geometric center of the second image capturing window 132.

In one embodiment, as shown in fig. 5, the second reading module 300 may further include at least one second fill-in light module 320 corresponding to the second camera module 310, and the second fill-in light module 320 is located in the second optical cavity 142. Here, when the hand-held type reader was arranging in on the paper, if second image acquisition window 132 part or whole is sheltered from by the paper, then the light of the environment that second camera module 310 was located is darker, consequently, sets up second light filling module 320 and carries out the light filling for second camera module 310 gathers the image and be favorable to improving the quality of gathering the image greatly.

Under the condition that the second camera module 310 corresponds to the touch reading mode, the second light supplement module 320 can be an infrared light supplement module for emitting infrared light.

In this embodiment, the second light supplement module 320 serves as a light supplement light source of the second camera module 310, and the light emitted by the second light supplement module can reach the second image collecting window 132.

The at least one second light supplement module 320 may be disposed around the second camera module 310. In one embodiment, at least one second light filling module 320 may be located in the same middle cross section of the second camera module 310, wherein the middle cross section is a cross section passing through the optical axis of the second camera module 310, and the optical axis of the first camera module 210 is located in the middle cross section. The at least one second light supplement module 320 may be disposed on two sides of the second camera module 310 or on one side of the second camera module 310 in the middle cross section, which is not limited herein.

In one embodiment, the angle of the second light filling module 320 may be set such that the optical axis of the second light filling module 320 is inclined to the plane where the second image capturing window 132 is located, that is, the optical axis of the second light filling module 320 is not parallel to the plane and is not perpendicular to the plane. This kind of slope sets up, is located the irradiation range's of second light filling module 320 condition completely at second image acquisition window 132 easily, obtains better illumination degree of consistency.

In one embodiment, an included angle between the optical axis of the second light supplement module and the optical axis of the second camera module may be greater than or equal to 3 degrees, and less than or equal to 17 degrees. For example, the included angle is greater than or equal to 5 degrees and less than or equal to 10 degrees. Also for example, the included angle is 8 degrees.

The connection structure of the second light supplement module 320 may refer to the first light supplement module 310, or may adopt other connection structures, which is not limited herein.

In one embodiment, as shown in fig. 6, the handheld reader may include a processor U1, the first camera module 210 is connected to the processor U1, and particularly, the image data output terminal of the image sensor of the first camera module 210 is connected to the processor U1, so as to send the acquired image data to the processor U1, for example, the image data acquired by the first camera module 210 is RGB image data corresponding to the scan mode. The second camera module 310 is also connected to the processor U1, specifically, an image data output terminal of the image sensor of the second camera module 310 is connected to the processor U1, so as to send the acquired image data to the processor U1, taking a click-to-read mode corresponding to the second camera module 310 as an example, the image data acquired by the second camera module 310 is black-and-white image data. The processor U1 is configured to perform a first process and a second process, wherein the first process includes identifying corresponding read content from any received image data; the second process includes performing a setting operation to realize a corresponding read mode according to the read content.

Taking the scanning mode corresponding to the first camera module 210 as an example, the reading content matched with the scanning mode may be text content. Taking the second camera module 310 corresponding to the touch reading mode as an example, the reading content matched with the touch reading mode is a hidden code.

Taking the identified read content as the text content as an example, executing the setting operation for implementing the corresponding read mode for the read content may include: inputting and storing the read text; translating the read text, for example, into an english translation; driving an audio output device to play the read text or the translated text; and driving the display screen to display any one or more of the read text and/or the translated text so as to realize the function of the scanning pen.

Taking the identified read content as the invisible code as an example, executing the setting operation corresponding to the point-to-read mode on the read content may include: and searching a sound file matched with the invisible code in a file library stored in the handheld reader for playing, namely realizing the function of the touch and talk pen.

In one embodiment, the handheld reader may include one processor, i.e., processor U1 includes only a first processor that is responsible for performing the above first and second processes.

In another embodiment, the processor U1 may also include a first processor and a second processor, the first processor is connected to the second processor, and the first camera module 210 and the second camera module 310 are both connected to the first processor, so that the first processor performs the above first processing, and the first processing further includes sending the identified reading content to the second processor. The second processor is configured to perform the above second process. In this embodiment, the first processor and the second processor are configured to execute the first processing and the second processing, respectively, which is beneficial to improving the processing efficiency and improving the response speed of the handheld reader.

In this embodiment, the first processor is used as a coprocessor and may be connected to only the first camera module 210 and the second camera module 310, and the second processor is used as a main processor and is connected to other functional devices of the handheld reader, so as to implement corresponding functions.

In an embodiment that the first reading module 200 further includes the first light supplement module 220, as shown in fig. 6, a switch control terminal of the first light supplement module 220 is connected to the processor U1, so that the processor U1 can output a switch control signal to the switch control terminal of the first light supplement module 220 through the first control signal output terminal, and further control the first light supplement module 220 to be turned on or turned off.

In an embodiment that the second reading module 300 further includes the second light supplement module 320, as shown in fig. 6, the switch control terminal of the second light supplement module 230 is connected to the second control signal output terminal of the processor U1, so that the processor U1 can output a switch control signal to the switch control terminal of the second light supplement module 320 through the second control signal output terminal, and further control the second light supplement module 320 to be turned on or turned off.

In an embodiment, the reading module 200 includes at least one first fill-in light module 220, and the at least one first fill-in light module 220 may be configured to provide the first fill-in light and the second fill-in light in a time-sharing manner, in this embodiment, a text type selection key for determining a text type of a text to be scanned is connected to the processor U1 in fig. 6, so that the processor U1 determines the text type of the text to be scanned according to a signal triggered by the text type selection key, and further determines a control scheme for the at least one first fill-in light module 220, where the control scheme is: and under the condition that the text type of the text to be scanned is a paper text, controlling the at least one first light supplement module 220 to provide a first path of light supplement, and under the condition that the text type of the text to be scanned is a text on the electronic equipment, controlling the at least one first light supplement module 220 to provide a second path of light supplement.

In an embodiment, as shown in fig. 6, the photosensor 1400 for determining the text type of the text to be scanned is connected to the processor U1, so that the processor U1 determines the text type of the text to be scanned according to the electrical signal output by the photosensor 1400, and further determines a control scheme for the at least one first fill-in light module 220.

In one embodiment, as shown in FIG. 6, the handheld reader may include an audio output device such as a speaker 500 and/or a headphone interface that is coupled to the processor U1 for outputting audio signals under the control of the processor U1. As shown in fig. 1 and 2, when the second reading module 300 is used as a point reading module, the speaker 500 may be disposed adjacent to the second reading module 300, and the housing 100 may further be provided with the sound outlet 111 corresponding to the speaker 500.

In one embodiment, as shown in fig. 6, the handheld reader may include an audio input device, such as a microphone 600, coupled to the processor U1 to provide captured audio signals to the processor U1.

In one embodiment, as shown in fig. 6, the handheld reader may include a communication module 800, the communication module 800 is connected with the processor U1, and the communication module 800 may include at least one of a bluetooth module, a WIFI module, and a ZIGBEE module. The handheld reader may be communicatively coupled to an external device through the communication module 800.

In one embodiment, as shown in fig. 6, the handheld reader may include a display screen 700, the display screen 700 being connected to the processor U1. In this embodiment, the display screen 700 may be mounted on the housing 100.

In one embodiment, as shown in fig. 6, the handheld reader may include a memory 1300, and the memory 1300 may be used to store computer programs, recognized text, translated text, pre-stored sound files, and the like.

In one embodiment, as shown in fig. 6, the handheld reader may include an interface type device 1100 that interfaces with the processor U1 to connect external devices and the like through the interface type device. The interface class device 1100 may include at least one of a USB interface, a headset interface, a memory card connection interface, and the like. The memory card connection interface is, for example, a TF card connector, an SD card connector, etc. to support the expansion of the memory space. In this embodiment, the interface device 1100 is exposed through the housing 100 to connect to an external device.

In one embodiment, as shown in fig. 6, the handheld reader may include a key circuit 400, a signal output terminal of the key circuit 400 is connected to a signal input terminal of the processor U1, and the key circuit 400 includes, for example, a key switch and a resistor, which are connected in series between a power terminal and a ground terminal of the handheld reader, so as to output different electrical signals when the key switch is opened and closed, respectively, so that the processor U1 can identify the state of the key switch according to the received electrical signals. The handheld reader may be configured with a key circuit for turning on reading, a key circuit for selecting a mode, a key circuit for controlling power on and off, a key circuit for selecting a text type of a text to be scanned (the key circuit includes the text type selection key), and the like as required, which is not limited herein. For example, a key circuit may be provided for the user to select the current reading mode, where the electrical signal output by the key circuit indicates the current reading mode selected by the user. In this embodiment, the key switches of the key circuit are exposed through the housing 100 for user operation.

In one embodiment, as shown in fig. 6, the handheld reader may include a battery module 900, the battery module 900 provides an operating voltage for all the electrical appliances of the handheld reader, including the processor U1, and the battery module 900 may provide different operating voltages through a voltage conversion circuit.

In one embodiment, as shown in fig. 6, the handheld reader may include a charging circuit 1000 controlled by the processor U1 to charge the battery module 900 through the charging circuit 1000.

In one embodiment, as shown in fig. 6, the handheld reader may include an optical indication circuit 1200. The light indication circuit includes, for example, a switch device and an indicator light connected in series, and the switch device of the light indication circuit 1200 is controlled by the processor U1 to control the on/off of the light indication circuit by the processor U1. In this embodiment, the indicator light of the light indicating circuit may be exposed to the outside through the housing 100 for light indication.

In one embodiment, the handheld reader may include at least one of the above speakers, microphones, communication modules, memories, interface-type devices, display screens, key circuits, light indicating circuits, as needed, to enable the processor U1 to perform matching setup operations for the identified read content.

Based on the handheld reader with the first reading module 200 and the second reading module 300, the following description will be given by taking the first reading module 200 as a scanning module and the second reading module 300 as a point reading module as an example, to describe a reading control method implemented by the handheld reader.

In this example, the processor U1, when executing the computer program stored in the memory, will control the handheld reader to perform the read control method, which includes the steps shown in fig. 7:

step S710, detecting the set reading event after the power-on, and executing the following step S720 when any event in the set reading event is detected, and ending the reading task when no any reading event is detected, and executing step S710 in a loop.

The setting read event may include at least one of: receiving an external instruction for starting reading, for example, triggering the external instruction through a key switch, a touch screen, an audio input device and the like; and detecting a change in motion of the handheld reader, etc.

Step S720, judging whether the current reading mode of the handheld reader is a point reading mode or a scanning mode, and executing the following step S731 under the condition that the current reading mode is the point reading mode; in the case of the scan mode, that is, not the click-to-read mode, the following step S741 is executed.

In step S731, the second reading module 300 is controlled to operate to capture the black and white image matching the touch reading mode through the second camera module 310, and then step S732 is executed.

In step S731, the controlling the second reading module 300 may include: the second camera module 310 is opened.

In the case that the second reading module 300 further includes the second fill-in module 320, the controlling the second reading module 300 may further include: the second light supplement module 320 is turned on to supplement light.

When the current reading mode is the point reading mode, the second camera module 310 acquires an image as a black-and-white image under the action of the second optical filter (infrared filter).

In step S732, the black and white image acquired by the second camera module 310 in step S731 is acquired, and then step S733 is executed.

Step S733, if the invisible code is recognized in the black-and-white image, if yes, step S734 is executed, and if no, the current reading task is ended.

Under the condition that the current reading mode is the point reading mode, the invisible codes can be directly identified through black and white images; a partial area of the black-and-white image can be selected as a target area according to the set size so as to identify the invisible codes from the target area, which is beneficial to reducing the data processing amount of the processor.

In step S734, the audio output device of the handheld reader is controlled to play the sound file matching the identified invisible code, and then the current reading task is ended.

The sound file is pre-stored in the memory of the handheld reader, and the processor U1 can determine the unique number of the invisible code after recognizing the invisible code, and search for the sound file matched with the invisible code according to the unique number as an index.

In step S741, the first reading module 200 is controlled to operate to acquire an image matching the scanning mode through the first camera module 210, and then step S742 is executed.

In step S741, the controlling the first reading module 200 may include: the first camera module 210 is opened.

In the case that the first reading module 200 further includes the first light supplement module 220, the controlling the first reading module 200 may further include: the first light supplement module 220 is turned on to supplement light.

When the current reading mode is the scanning mode, under the action of the first optical filter (visible light filter), the first camera module 210 collects an image of the text print layer, where the image may be a color image or a black-and-white image.

In step S742, the image acquired by the first camera module in step S741 is acquired, and then step S743 is executed.

Step S743, whether the text content is recognized in the image, if so, step S744 is executed, and if not, the current reading task is ended.

Under the condition that the current reading mode is the scanning mode, text content can be directly identified from the image acquired by the first camera module 210; a part of pixels can be extracted from the image to generate a new image, and text content can be identified from the new image so as to reduce data processing amount.

In the scanning mode, it is necessary to stitch the continuously acquired images for text content identification.

In step S744, a setting operation is performed for the recognized text content.

Such as text entry, storage, translation, display, etc.

Referring to fig. 1 to 6, the handheld reader of the present embodiment includes a first camera module 210 and a second camera module 310, where the two camera modules have different optical filters, so that the two camera modules can correspond to different reading modes, and thus, the processor U1 of the handheld reader can start the corresponding camera module to work according to the current reading mode selected by the user, so as to ensure that the handheld reader can obtain the best image capturing effect in different reading modes, and further, when the handheld reader of the present embodiment supports multiple reading modes, the handheld reader can still obtain the recognition rate equivalent to that of a scanning pen, a touch-and-talk pen, etc. which only support a single mode.

According to the handheld reader of the embodiment, taking the scanning mode corresponding to the first camera module 210 and the touch reading mode corresponding to the second camera module 310 as an example, since the black and white image collected by the second camera module 310 through the second optical filter (infrared optical filter) includes the invisible codes of carbon black on the page, and the image collected by the first camera module 210 through the first optical filter (visible optical filter) includes the text contents of various colors on the page, the handheld reader of the embodiment can still obtain the identification rate of the wand and the touch reading pen equivalent to a single function when having the wand function and the touch reading pen function at the same time.

In one embodiment, the handheld reader may include a plurality of functional devices including a third processor and other devices connected to the third processor, including, for example, at least one of a display screen, an interface-type device, an indicator light, a key switch, a communication module, and the like. The third processor may be processor U1 in fig. 6. In this embodiment, the plurality of functional devices are connected to at least two circuit boards, for example, as shown in fig. 1 and 2, and the plurality of functional devices are connected to three circuit boards C0, C1, C2, which are each provided in the housing 100, and for example, the hand-held reader further includes a hub frame provided in the housing 100, the circuit boards being fixedly mounted to the hub frame, and the like.

In this embodiment, a plurality of functional devices are connected to a plurality of circuit boards, and different circuit boards can be disposed at appropriate positions according to the characteristics of the installation space in the housing 100, for example, the circuit boards can be stacked, so that the functional devices can be disposed in the housing 100 more compactly, and further, the limited space in the housing 100 can be effectively utilized. In this way, in the case where two reading

modules

200, 300 are provided, the overall size of the handheld reader can be made comparable to that of a handheld reader provided with one reading module.

In one embodiment, as shown in fig. 1 and 2, the at least two circuit boards include a main circuit board C0 provided with a third processor, and the first camera module 210 and the second camera module 310 are respectively disposed on both sides of the main circuit board C0 in the length direction of the housing 100, or the first reading module 200 and the second reading module 300 are respectively disposed on both sides of the main circuit board C0 in the length direction of the housing 100. In this embodiment, the first camera module 210 and the second camera module 220 are both connected to the main circuit board C0, or the first reading module 200 and the second reading module 300 are both connected to the main circuit board C0.

In this embodiment, the first reading module 200 may lead out a first connection plug, which may be a pin-type terminal or a flat cable-type terminal, and correspondingly, the main circuit board C0 is provided with a first connection socket adapted to the first connection plug, so as to realize the connection between the first reading module 200 and the main circuit board C0 through the connection between the first connection plug and the adapted first connection socket. The first connection plug of the first reading module 200 includes a connection terminal corresponding to the first camera module 210, and in an embodiment where the first reading module 200 further includes the first light supplement module 220, the first connection plug may further include a connection terminal corresponding to the first light supplement module 220. Correspondingly, the first connection socket on the main circuit board C0 includes a connection terminal for connecting the first camera module 210 with the third processor, and in an embodiment where the first reading module 200 further includes the first light supplement module 220, further includes a connection terminal for connecting the first light supplement module 220 with the third processor, and the like.

In this embodiment, for example, the circuit board 211 of the first camera module 210 may be perpendicular to the main circuit board C0. For another example, the circuit board 221 of the first fill-in light module 220 may be parallel to the main circuit board C0.

Similarly, the second reading module 300 may be led out of a second connection plug, which may also be a pin type terminal or a flat cable type terminal, and correspondingly, the main circuit board C0 is provided with a second connection socket adapted to the second connection plug, so as to realize the connection between the second reading module 300 and the main circuit board C0 through the connection between the second connection plug and the adapted second connection socket. The second connection plug of the second reading module 300 includes a connection terminal corresponding to the second camera module 310, and in an embodiment where the second reading module 300 further includes the second fill-in light module 320, the second connection plug may further include a connection terminal corresponding to the second fill-in light module 320. Correspondingly, the second connection socket on the main circuit board C0 includes a connection terminal for connecting the second camera module 310 with the third processor, and in an embodiment where the second reading module 300 further includes the second fill-in light module 320, further includes a connection terminal for connecting the second fill-in light module 320 with the third processor, and so on.

In one embodiment, the handheld reader further comprises a battery module 900, and the at least two circuit boards further comprise a first circuit board C1 connected to the main circuit board C0, so as to connect the functional devices on the first circuit board C1 to the third processor. As shown in fig. 1 and 2, the first circuit board C1 and the battery module 900 may be disposed on one side of the first surface of the main circuit board C0 such that the first circuit board C1 and the battery module 900 are disposed in parallel with the main circuit board C0, to reduce the size of the handheld reader in the length direction of the case 100 by the stacked arrangement structure.

In this embodiment, the main circuit board C0 and the first and

second camera modules

210 and 310 on both sides enclose a U-shaped space in which the first circuit board C1 and the battery module 900 are disposed.

In this embodiment, the functional devices disposed on the first circuit board C1 may include interface devices, and the interface devices may include at least one of a USB interface, a headset interface, a network interface, a memory card connection interface, and the like. In this embodiment, the interface device is exposed through the housing 100 to connect to an external device. In this embodiment, since the interface devices need to be disposed adjacent to the housing 100 so that the interfaces can be exposed through the opening of the housing 100, disposing the interface devices on the main circuit board C0 limits the disposition position of the main circuit board C0 in the housing 100, and disposing the interface devices separately on the first circuit board C1 independent from the main circuit board C0 is beneficial to disposing the main circuit board C0 and the first circuit board C1 in the housing 100 at appropriate positions, so as to effectively utilize the space in the housing 100.

In one embodiment, as shown in fig. 2, the at least two circuit boards may further include a second circuit board C2 connected to the main circuit board C0 to enable connection between the functional devices of the second circuit board C2 and the third processor. In this embodiment, the second circuit board C2 and the main circuit board C0 may be separately disposed at both sides of the battery module 900 to reduce the size of the handheld reader in the length direction of the case 100 by the stacked arrangement structure.

In this embodiment, the functional devices provided on the second circuit board C2 may include key switches and indicator lights. For example, the second circuit board C2 is provided with a key switch and a ring of indicator lights surrounding the key switch. The key switch of the second circuit board C2 may be a return key like a home key.

In this embodiment, the second circuit board C2 may be a flexible circuit board FPCB or a PCB, which is not limited herein.

In this embodiment, since the key switches, the indicator lamps, and the like need to be disposed adjacent to the housing 100 so that these components can be exposed to the outside through the opening provided in the housing 100, disposing the key switches, the indicator lamps, and the like on the main circuit board C0 restricts the disposition position of the main circuit board C0 in the housing 100, and disposing these components separately on the second circuit board C2 which is independent of the main circuit board C0 is advantageous for disposing the main circuit board C0 and the second circuit board C2 at appropriate positions in the housing 100, respectively, thereby achieving effective utilization of the space in the housing 100.

In one embodiment, the second circuit board C2 is provided with a key switch; the functional devices disposed on the first circuit board C1 include other key switches, such as a power-on key, in addition to the interface devices. In this embodiment, the third processor may be configured to: the program update process is performed when a signal triggered by a key switch (e.g., a return key) on the second circuit board C2 and a signal triggered by a key switch (e.g., an on key) on the first circuit board C1 are received at the same time.

In this embodiment, when the third processor performs the program update process, the program update content, the program update progress, and the like may be displayed on the display screen 700.

In one embodiment, all of the key switches of the handheld reader may be separately provided on the main circuit board C0, the first circuit board C1, and the second circuit board C2, so that the key switches can be separately located at different positions of the housing 100 for easy differentiation and operation by a user.

For example, the handheld reader may include a key switch as a reset key for sending a reset signal to the third processor upon user activation, and the reset key may be disposed on the main circuit board C0 and may be inserted into a key hole formed in the housing 100 to prevent user false activation. For another example, the hand-held reader may include a key switch used as a return key, and the key switch may be provided on the second circuit board C2. As another example, the handheld reader may include a key switch used as an on-key, which may be provided on the first circuit board C1.

In one embodiment, as shown in fig. 1, the casing 100 may include a flat front cover plate 110 and a curved rear cover 120, and the front cover plate 110 and the rear cover 120 are fastened together to form the casing. In this embodiment, the at least two circuit boards include a main circuit board C0 that provides the third processor, the main circuit board C0 being disposed parallel to the front cover plate 110. In this embodiment, the functional devices may further include a display screen 700, the display screen 700 is mounted on the front cover 110, and the display screen 700 may be connected to the main circuit board C0 through a flat cable or the like.

In this embodiment, the second surface of the main circuit board C0 opposite to the first surface is disposed facing the rear case 120, and the first surface of the main circuit board C0 is disposed facing the front cover 110.

In this embodiment, the housing 100 includes a straight front cover plate 110 and a rear housing 120 with a curved surface, the display screen 700 can be embedded in the front cover plate 110, so as to reduce the cost of installing the display screen and the assembly difficulty, and the volume of the space in the housing 100 is increased by the curved rear housing 120, so as to accommodate the first reading module 200, the second reading module 300, the at least two circuit boards, and the like in the housing 100.

In this embodiment, as shown in fig. 2, the above battery module 900 and the first circuit board C1 may be sandwiched between the display screen 700 and the main circuit board C0.

In this embodiment, as shown in fig. 2, the above second circuit board C2 and the display screen 700 may be arranged to be offset in the length direction of the casing 100.

Each of the above embodiments is mainly described as different from the other embodiments, and the embodiments may be used alone or in combination with each other as needed, and are not limited herein.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims

1. A handheld reader is characterized by comprising a shell, a first camera module corresponding to a first reading mode and a second camera module corresponding to a second reading mode, wherein the shell is provided with a first image acquisition window corresponding to the first camera module and a second image acquisition window corresponding to the second camera module;

2. The handheld reader of claim 1, wherein the first image capture window is located at a first end of the housing and the second image capture window is located at a second end of the housing, the first and second ends being opposite ends in a length direction of the housing.

3. The handheld reader of claim 1, wherein the first filter is a visible light filter and the second filter is an infrared filter.

4. The handheld reader of claim 1, wherein the circuit board of the first camera module and the housing enclose a first optical cavity in communication with the first image acquisition window;

5. The handheld reader according to claim 4, wherein the angle is set such that the first image capturing window is completely within an illumination range of the at least one first fill-in light module.

6. The handheld reader according to claim 4, wherein the set angle is larger than or equal to 30 degrees and smaller than or equal to 75 degrees, and the set angle is an angle between an optical axis of the first fill-in light module and an optical axis of the first camera module.

7. The handheld reader according to claim 4, wherein the predetermined angle is such that at least a portion of light emitted by the first fill-in light module is reflected by the housing and then enters the first image capturing window.

8. The handheld reader of claim 1, wherein the circuit board of the first camera module and the housing enclose a first optical cavity in communication with the first image acquisition window;

9. The handheld reader of claim 8, further comprising a photosensor for detecting the intensity of light applied to the first optical cavity by ambient light, the photosensor being disposed in the first optical cavity.

10. The handheld reader of claim 1, wherein the housing forms a second optical cavity between the second camera module and the second image acquisition window;

11. The handheld reader of any one of claims 1 to 10, wherein the handheld reader comprises a first processor, wherein the first camera module is coupled to the first processor to send the captured image data to the first processor, and wherein the second camera module is coupled to the first processor to send the captured image data to the first processor.

12. The handheld reader of claim 11 further comprising a second processor, said second processor connected to said first processor; the first processor is configured to execute a first process, and the second processor is configured to execute a second process, wherein the first process includes identifying corresponding read contents from any of the image data and transmitting the read contents to the second processor; the second processing includes executing a setting operation to realize a corresponding read mode according to the read content provided by the first processor.

13. The handheld reader of any one of claims 1 to 10, further comprising a plurality of functional devices including a third processor and other devices connected to the third processor; the plurality of functional devices are connected to at least two circuit boards, which are disposed in the housing.

14. The handheld reader according to claim 13, wherein the at least two circuit boards include a main circuit board on which the third processor is disposed, the first camera module and the second camera module are respectively disposed on both sides of the main circuit board in a length direction of the housing, and both the first camera module and the second camera module are connected to the main circuit board;

15. The handheld reader of claim 14, wherein the at least two circuit boards further comprise a second circuit board connected to the main circuit board, the second circuit board and the main circuit board being disposed on opposite sides of the battery module.

16. The handheld reader of claim 15 wherein the second circuit board includes functional devices including at least a key switch and an indicator light; the functional devices arranged on the first circuit board at least comprise interface devices and other key switches; the third processor is arranged to:

17. The handheld reader of claim 13, wherein the housing comprises a flat front cover and a curved-surface back housing, the front cover and the back housing snap together to form the housing;