A light interference-resistant camera device and electronic equipment

Abstract

The present invention relates to an anti-light interference camera device, which comprises: a camera module; an ambient light sensor module, which is arranged around the camera module, and is used for detecting and outputting characteristic information of visible light around the camera module, wherein the characteristic information comprises visible light frequency; the ambient light sensor module, which is arranged around the camera module, and is used for detecting and outputting characteristic information of visible light emitted by various light sources around the camera module, wherein the characteristic information comprises visible light frequency; and a processing module, which is used for adjusting the frequency of the camera module according to the characteristic information output by the ambient light sensor module, so that after a certain number of frames, the frequency of the camera module becomes compatible with the visible light frequency of visible light emitted by at least part of the light sources, thereby eliminating light interference from the visible light around the camera module.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and more specifically, relates to an anti-light interference camera device and electronic equipment for electronic products. Background Art

[0002] Camera devices are widely used in daily life, such as factory production monitoring, live video, photography and video recording, VR and AR equipment, etc.

[0003] Appropriate lighting is a key factor for the camera to fully perform its functions. However, in actual use, the camera is often in scenes with complex and changeable lighting environments, such as indoors, especially indoors with multiple lighting sources. In the above scenes, the images shot or recorded by the camera often have problems that seriously affect the image quality, such as being too bright, too dark, and having light and dark stripes in the picture. This situation is usually called light interference; indoors is one of the main application scenarios of VR products such as head-mounted VR devices. Most of the current VR products are based on the video see through function of the camera. The light interference problem of indoor light sources is one of the main difficulties faced by VR products.

[0004] At present, for the light interference problem that may occur during the process of shooting and recording images, the usual practice is to use a single light source as much as possible; in indoor scenes, if you need to achieve a better recording effect, you should try to use the same type of lamps as the light source. However, the above approach has high requirements for the working environment of the camera device, and the cost is often very high. In addition, for consumers who want to use VR equipment indoors, more single-model light sources are prone to cause visual fatigue, and also make the indoor scenes observed through VR equipment more monotonous. In addition, replacing the entire house light source in order to experience VR equipment and sacrificing the comfort and convenience of daily life is obviously too costly and difficult to achieve for most consumers. Summary of the invention

[0005] One object of the present invention is to provide an anti-light interference camera device to solve the problem in the prior art that the camera is easily affected by the surrounding visible light during recording; another object of the present invention is to provide an electronic device including the above-mentioned anti-light interference camera device.

[0006] According to a first aspect of the present invention, there is provided an anti-light interference camera device, comprising:

[0007] A camera module, wherein the camera module has a current shooting frequency;

[0008] An ambient light sensor module is disposed around the camera module, and is used to detect characteristic information of visible light emitted by an ambient light source, wherein the characteristic information includes a frequency of the visible light;

[0009] The processing module compares the characteristic information of the visible light with the current shooting frequency. If the visible light frequency and the current shooting frequency are not in a multiple frequency relationship, the current shooting frequency is adjusted. After a predetermined number of shooting frames, the current shooting frequency of the camera module is adjusted to be in a multiple frequency relationship with the visible light frequency.

[0010] Optionally, adjusting the current shooting frequency of the camera module to be the same as the visible light frequency;

[0011] Alternatively, the current shooting frequency of the camera module is adjusted to twice or half of the visible light frequency.

[0012] Optionally, the characteristic information also includes the light intensity of the ambient light source.

[0013] Optionally, the ambient light source with the strongest light intensity is compared with the current shooting frequency, and the shooting frequency is adjusted.

[0014] Optionally, the frequency range of the camera module is 30 Hz to 60 Hz.

[0015] Optionally, the ambient light sensor module and the camera module are arranged adjacent to each other, and the orientation of the ambient light sensor module is consistent with the orientation of the camera module.

[0016] Optionally, the light receiving range of the ambient light sensor module is greater than or equal to the shooting range of the camera module.

[0017] Optionally, at least two of the ambient light sensor modules are included, and the plurality of ambient light sensor modules are evenly distributed on the left and right sides of the camera module.

[0018] According to a second aspect of the present invention, there is provided an electronic device comprising the above-mentioned anti-light interference camera device.

[0019] Optionally, the electronic device is a head-mounted VR device, and the head-mounted VR device includes:

[0020] An outer shell, wherein a wearing portion and a strap are disposed inside the outer shell, wherein the wearing portion is configured to fit the human eye and surrounding contours, and the strap is used to fix the head-mounted VR device on the human head and make the wearing portion fit the human eye and surrounding contours;

[0021] The anti-light interference camera device is arranged on the outer shell, the camera module is arranged outside the outer shell, the camera module is located at a position corresponding to the human eye, and the ambient light sensor module is arranged outside the outer shell and around the camera module.

[0022] The technical effect of the embodiments of the present application is that by matching the camera module with the ambient light source, the possibility of flickering and blurring in the captured image is reduced, thereby improving the user's viewing experience.

[0023] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0025] Figure 1 A schematic diagram of wearing a head-mounted VR device provided in an embodiment of the present application.

[0026] Among them: 1. Camera module; 2. Ambient light sensor module; 3. Outer shell; 4. Wearing part; 5. Strap. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0028] 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.

[0029] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] This embodiment provides an anti-light interference camera device, which includes:

[0032] A camera module 1, wherein the camera module 1 has a current shooting frequency;

[0033] An ambient light sensor module 2 is disposed around the camera module 1, and is used to detect characteristic information of visible light emitted by an ambient light source, wherein the characteristic information includes a frequency of the visible light;

[0034] The processing module compares the characteristic information of the visible light with the current shooting frequency. If the visible light frequency and the current shooting frequency are not in a multiple frequency relationship, the current shooting frequency is adjusted. After a predetermined number of shooting frames, the current shooting frequency of the camera module 1 is adjusted to be in a multiple frequency relationship with the visible light frequency.

[0035] In this embodiment, the above-mentioned anti-light interference camera device is applied to a head-mounted VR device, such as Figure 1 As shown; in the actual use scenarios of the camera device and even the head-mounted VR device, the main reason for the light interference is that the visible light frequency around the camera module 1 does not match the recording frequency of the camera module 1 itself. As a result, the picture produced by the camera module 1 will appear dark and bright at times, and there will be light and dark stripes in the picture, that is, strobe, etc., which seriously affects the recording effect. In the VR and AR application environment, the device captures the real scene through the camera module 1, and then converts the real scene signal into a video output, and other visual effects can be superimposed on it for the wearer of the device to watch. If the real scene signal itself has obvious defects due to the shooting frequency, the final picture effect will not allow the wearer to see a smooth and clear picture.

[0036] The anti-light interference camera device provided in this embodiment captures and analyzes the visible light around the camera module 1 through the ambient light sensor module 2 to obtain the characteristic information of the visible light in the environment, especially including the frequency information. When the frequency of the visible light is detected to be mismatched with the current frequency of the camera module 1, the ambient light sensor module 2 will transmit the characteristic information of the detected mismatched visible light to the processing module, and the processing module will adjust the recording frequency of the camera module 1 so that the current shooting frequency of the camera module 1 is adapted to the conflicting visible light frequency to eliminate the light interference from the visible light around the camera module 1. When the frequency of the ambient light source is not in a multiple frequency relationship with the shooting frequency of the camera module, that is, when the frequencies of the two are not in a multiple relationship, the signal captured by the camera module may be strong and weak, and stable ambient visible light cannot be collected. The technical solution adjusts the current shooting frequency of the camera module 1 to be in a multiple frequency relationship with the visible light frequency of the ambient light source, that is, in a frequency relationship that is the same or multiple. In this way, the camera module 1 can shoot the ambient light source in a matching frequency relationship, and there will be no light and dark changes or blurring due to frequency problems.

[0037] This embodiment works according to the above principle. There is no need to change the external light source. Instead, the camera module 1 is actively adjusted to adapt to various external light sources. This makes the anti-light interference camera device provided by this embodiment highly adaptable to various environments. Compared with the existing commonly used methods, the cost and operation difficulty are lower.

[0038] In the actual production process, there are various choices for the ambient light sensor module 2. It can be a visible light sensor, or it can be configured in the form of a photodiode->amplifier->A / DC (analog-to-digital conversion circuit). The signal output end of the photodiode is electrically connected to the signal input end of the amplifier, and the signal output end of the amplifier is electrically connected to the signal input end of the A / DC. The photodiode converts the detected visible light signal into a current signal or a voltage signal and outputs it to the amplifier, which amplifies it and outputs it to the A / DC. Finally, the digital signal output by the A / DC is extracted through a data extraction algorithm to obtain characteristic information including the visible light frequency. It can also be implemented using an IC chip with corresponding functions.

[0039] In this embodiment, preferably, the ambient light sensor module 2 is arranged close to the camera module 1. The ambient light sensor module 2 is arranged as close to the ambient light sensor module 2 as possible. The purpose of this design is to ensure that the visible light detected by the ambient light sensor module 2 is as similar as possible to the visible light incident on the camera module 1, so that the detection and subsequent adjustment effects are more accurate.

[0040] In this embodiment, preferably, the characteristic information also includes the intensity of visible light around the camera module 1. In some typical usage scenarios, such as when using a head-mounted VR device indoors, the light sources faced are complex and changeable, and usually have a main light source with a stronger light intensity and an auxiliary light source with a weaker light intensity. Among the light sources that are not compatible with the frequency of the camera device and will cause light interference, the light interference caused by the light source with a stronger light intensity will be greater than the light interference caused by the light source with a weaker light intensity. Therefore, this preferred solution further detects the intensity of the visible light and screens out the visible light with the strongest light intensity that causes light interference, so as to facilitate the subsequent targeted adjustment of the camera frequency to adapt to the light.

[0041] In this embodiment, further, the processing module adjusts the frequency of the camera module 1 so that the frequency of the camera module 1 is adapted to the frequency of the strongest visible light around it. The processing module matches and compares the shooting frequency of the camera module 1 with the strongest light intensity in the ambient light source. If the visible light frequency and the current shooting frequency are not in a multiple frequency relationship, the current shooting frequency of the camera is adjusted to form a multiple frequency relationship with the strongest ambient light source. As mentioned above, a light source with a stronger light intensity will always produce more serious light interference. This design adjusts the frequency of the camera module 1 to adapt to the visible light with the strongest light intensity, so as to eliminate the most serious light interference as much as possible in complex and changeable indoor lighting scenes, so as to make the overall anti-light interference ability of the device stronger.

[0042] In this embodiment, the frequency of the camera module 1 is further adapted to the frequency of the strongest visible light around it, specifically, the frequency of the camera module 1 is made to be the same frequency or a multiple of the frequency of the strongest visible light around it. The purpose of the above design is to make the camera module 1 have a wider adaptability range for the visible light frequency that causes light interference, while making the frequency range that the camera module 1 needs to adjust as small as possible, which can significantly save costs, reduce power consumption and heat generation, and thus ensure the overall user experience of the device.

[0043] In an optional embodiment of the present scheme, if the visible light frequency of the ambient light source is within the shooting frequency range of the camera module 1, the current shooting frequency of the camera module 1 can be directly adjusted to the same as the visible light frequency, or to twice the frequency, to ensure the stability of the shooting signal.

[0044] In another case, if the visible light frequency of the ambient light source is outside the shooting frequency range of the camera module 1, the current shooting frequency of the camera module 1 can be adjusted to half the visible light frequency, still maintaining the frequency multiple relationship to ensure shooting stability. If the visible light frequency of the ambient light source is too high, a smaller multiple of the current shooting frequency can be further used to meet the shooting frequency range of the camera module 1 itself.

[0045] In this embodiment, further, the light detection range of the ambient light sensor module 2 is not less than the FOV (i.e., field of view, hereinafter referred to as FOV) of the camera module 1. The above design can ensure that the ambient light sensor module 2 fully detects the visible light around the camera module 1, and avoids that some visible light that will cause light interference is not detected, resulting in the camera module 1 not being adjusted and adapted, thereby affecting the anti-light interference effect of the device; combined with the above-mentioned setting of the ambient light sensor module 2 close to the camera module 1, in actual use, the detection range of the ambient light sensor module 2 can fully cover the FOV of the camera module 1, further improving the adequacy of the detection.

[0046] In this embodiment, further, the frequency range of the camera module 1 is 30Hz to 60Hz. The applicant has found through multiple tests that setting the frequency of the camera module 1 within this range can ensure the visual effect of the image recorded by the camera module 1 while making the camera module 1 have a good matching degree for natural light and various common frequencies of artificial visible light sources; combined with adjusting the frequency of the camera module 1 to the same frequency or multiple frequency as the visible light with light interference, the camera module 1 can match various frequencies of visible light that cause light interference within the adjustable range of 30Hz, while ensuring the visual effect and anti-light interference effect, compressing power consumption, reducing heat, and ensuring the user experience.

[0047] In this embodiment, further, there are at least two ambient light sensor modules 2. When there are multiple ambient light sensor modules 2, the ambient light sensor modules 2 are distributed on the left and right sides of the camera module 1. In actual use, one camera module 1 equipped with one ambient light sensor module 2 can already meet the use requirements. If a better anti-light interference effect is required, multiple ambient light sensor modules 2 can also be set to further improve the overall anti-light interference effect of the device; when multiple ambient light sensor modules 2 are set, for example, when two ambient light sensor modules 2 are set, preferably, the multiple ambient light sensor modules 2 are evenly distributed on the left and right sides of the camera module 1, so that the FOV of the camera module 1 can be more fully covered; in order to further improve the effect, the multiple ambient light sensor modules 2 can be configured to be set parallel to the center line of the FOV of the camera module 1, so that the detection range of the ambient light sensor module 2 is flush with the FOV of the camera module 1, and can fully cover the entire FOV of the camera module 1, so that the degree of detection adequacy is further improved.

[0048] This embodiment also provides an electronic device, which includes the above-mentioned anti-light interference camera device. In actual use, the anti-light interference camera device provided by this embodiment has a very wide range of applications and can be installed on various common electronic products, such as mobile phones, monitoring devices, VR equipment, etc.

[0049] This embodiment further provides a VR device, more specifically a head-mounted VR device, such as Figure 1 As shown, it can present an enhanced image on the real scene to the wearer. The head-mounted VR device includes an outer shell 3 and the above-mentioned anti-light interference camera device in this embodiment.

[0050] The inner side of the outer shell 3 is provided with a wearing part 4 and a strap 5. The wearing part 4 is used to fit the contour of the human eye and its surrounding area. The strap 5 is used to fix the head-mounted VR device on the wearer's head and fix the wearing part 4 on the wearer's eye and surrounding area, so that the wearing part 4 always fits the contour of the wearer's eye and the surrounding area of ​​the eye during the wearing process; in the head-mounted VR device, the camera module 1 in the anti-light interference camera device is arranged on the outer side of the outer shell 3, which corresponds to the eye area of ​​the user wearing the head-mounted VR device. That is, the real scene picture captured by the camera module 1 is roughly the same as the actual scene and direction that can be observed when the person does not wear the device. The ambient light sensor module 2 in the anti-light interference camera device is arranged on the outer side of the outer shell 3 and is located around the camera module 1; the control circuit module, data processing module, power module, etc. necessary for the operation of the head-mounted VR device are configured inside the outer shell 3. These modules are all conventional technical means in the current field, and the applicant will not elaborate on them here.

[0051] Indoors is one of the main application scenarios of VR devices, especially head-mounted VR devices. The frequency of indoor ambient lighting is complex and changeable. Most current VR devices are based on visual sensors to perform Video See Through functions. Indoor lighting and other light sources will cause light interference to the VR See Through function, resulting in unstable operation. The head-mounted VR device provided in this embodiment, for the above-mentioned scenario, uses the anti-light interference camera device provided in this embodiment as the visual sensor of the VR device, detects the ambient visible light incident into the camera module 1 to obtain characteristic information including the visible light frequency, if visible light that is not compatible with the current frequency of the camera module 1 is detected, the processing module immediately reconfigures the camera module 1, adjusts its frequency to adapt to the visible light, and the re-adjusted camera module 1 frequency takes effect after a certain number of frames, so that the camera module 1 is adapted to the visible light frequency that would otherwise cause light interference, thereby eliminating the phenomenon of the picture being too bright, too dark, and the appearance of light and dark stripes caused by light interference, and ensuring the user experience of the head-mounted VR device.

[0052] In actual use, as mentioned above, the main usage scenario of the head-mounted VR device is indoors, and the light source indoors is usually not single. There are main light sources with strong light intensity, and there are also auxiliary light sources for auxiliary lighting. For example, there are ceiling-mounted headlights in the room, as well as downlights and spotlights on the side edges of the walls, and table lamps and night lights placed on the desktop or on the ground. Among the light sources that are not compatible with the frequency of the camera device and will cause light interference, the light interference caused by the light source with stronger light intensity will be greater than the light interference caused by the light source with weaker light intensity. The ambient light sensor module 2 equipped with the anti-light interference camera device in the head-mounted VR device can preferably further detect the light intensity of the visible light, and screen out the visible light with the strongest light intensity that causes light interference, specifically, screen out the visible light whose frequency does not match the current frequency of the camera module 1 and has the largest amplitude. The processing module adapts the frequency of the camera module 1 to the visible light with the strongest light intensity to focus on eliminating the light interference caused by it.

[0053] In the actual production process, it is preferred to set the ambient light sensor module 2 as close to the camera module 1 as possible, and make the ambient light sensor module 2 and the camera module 1 on the same horizontal line. Such a design, first, can make the detection range of the ambient light sensor module 2 fully cover the entire FOV of the camera module 1, ensure the sufficient detection of the visible light around the camera module 1, and prevent the missing of some visible light that will cause light interference and cause the processing module to fail to adjust the frequency of the camera module 1 in time, affecting the use effect; second, because in this head-mounted VR device, the anti-light interference camera device mainly plays the role of a visual sensor, it is necessary to simulate the external scene seen by the human eye, and the camera module 1 is set at the position where the human pupil is opposite when worn. It is also mainly for this purpose. Therefore, the ambient light sensor module 2 is configured to be on the same horizontal plane as the camera module 1, which can be parallel to the line of sight of the human eye, which is more in line with the needs of actual use.

[0054] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0055] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A light interference resistant camera device, characterized in that: include: A camera module, wherein the camera module has a current shooting frequency; An ambient light sensor module is disposed around the camera module, and is used to detect characteristic information of visible light emitted by an ambient light source, wherein the characteristic information includes a frequency of the visible light; a processing module, which compares the characteristic information of the visible light with the current shooting frequency, and if the visible light frequency is not in a multiple frequency relationship with the current shooting frequency, adjusts the current shooting frequency, and after a predetermined number of shooting frames, adjusts the current shooting frequency of the camera module to be in a multiple frequency relationship with the visible light frequency; The frequency range of the camera module is 30Hz to 60Hz; The characteristic information also includes the intensity of the ambient light source. The ambient light source with the strongest intensity is compared with the current shooting frequency, and the shooting frequency is adjusted so that the shooting frequency forms a multiple frequency relationship with the strongest ambient light source.

2. The anti-light interference camera device according to claim 1, characterized in that: Adjusting the current shooting frequency of the camera module to be the same as the visible light frequency; Alternatively, the current shooting frequency of the camera module is adjusted to twice or half of the visible light frequency.

3. The anti-light interference camera device according to claim 1, characterized in that: The ambient light sensor module is disposed adjacent to the camera module, and the orientation of the ambient light sensor module is consistent with the orientation of the camera module.

4. The anti-light interference camera device according to claim 3, characterized in that: The light receiving range of the ambient light sensor module is greater than or equal to the shooting range of the camera module.

5. The anti-light interference camera device according to claim 1, characterized in that: At least two of the ambient light sensor modules are included, and the multiple ambient light sensor modules are evenly distributed on the left and right sides of the camera module.

6. An electronic device, characterized in that: An anti-light interference camera device according to any one of claims 1 to 5 is used.

7. An electronic device according to claim 6, characterized in that: The electronic device is a head-mounted VR device, and the head-mounted VR device includes: An outer shell, wherein a wearing portion and a strap are disposed inside the outer shell, wherein the wearing portion is configured to fit the human eye and surrounding contours, and the strap is used to fix the head-mounted VR device on the human head and make the wearing portion fit the human eye and surrounding contours; The anti-light interference camera device is arranged on the outer shell, the camera module is arranged outside the outer shell, the camera module is located at a position corresponding to the human eye, and the ambient light sensor module is arranged outside the outer shell and around the camera module.

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