CN117119176A - Camera test circuit, camera test device and camera test method - Google Patents
Camera test circuit, camera test device and camera test method Download PDFInfo
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- CN117119176A CN117119176A CN202311373400.2A CN202311373400A CN117119176A CN 117119176 A CN117119176 A CN 117119176A CN 202311373400 A CN202311373400 A CN 202311373400A CN 117119176 A CN117119176 A CN 117119176A
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- 238000010998 test method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 description 16
- 230000003993 interaction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- Multimedia (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention provides a camera test circuit, a camera test device and a camera test method, wherein the camera test circuit comprises a controller, a switch switching circuit, an image data transmission circuit and a test data transmission circuit; the device comprises a controller, a first data transmission end, a second data transmission end, a third data transmission end, a test data transmission circuit, a first data transmission end, a second data transmission end, a third data transmission end and a third data transmission end, wherein the first data transmission end of the switch switching circuit is connected with the output end of the controller, the first data transmission end of the switch switching circuit is connected with a USB interface of the controller, the second data transmission end of the switch switching circuit is connected with the image data transmission circuit, and the third data transmission end of the switch switching circuit is connected with the test data transmission circuit. According to the technical scheme, the camera testing efficiency can be improved, and the camera testing cost is reduced.
Description
Technical Field
The present invention relates to the field of camera technologies, and in particular, to a camera testing circuit, a camera testing device, and a camera testing method.
Background
In practical application, image data can be transmitted to the 4G module through the USB bus interface of the central processing unit, and the USB bus interface is externally connected with USB network port equipment for production test during production test, however, because the central processing unit only has one USB bus interface, the 4G module and the USB network port equipment cannot be simultaneously connected, the USB bus interface of the central processing unit needs to be switched between the 4G module and the USB network port equipment, so that the problems of large workload and low efficiency exist in the production test process of the camera.
Disclosure of Invention
The invention provides a camera test circuit, a camera test device and a camera test method, which aim to improve the production test efficiency of a camera and reduce the production test cost.
In order to achieve the above object, the present invention provides a camera test circuit, comprising a controller, a switch switching circuit, an image data transmission circuit and a test data transmission circuit;
the selection end of the switch switching circuit is connected with the output end of the controller, the first data transmission end of the switch switching circuit is connected with the USB interface of the controller, the second data transmission end of the switch switching circuit is connected with the image data transmission circuit, and the third data transmission end of the switch switching circuit is connected with the test data transmission circuit;
the switch switching circuit is used for communicating the controller with the image data transmission circuit when receiving a first control signal output by the controller so as to enable the controller to transmit image data through the image data transmission circuit;
the switch switching circuit is also used for communicating the controller with the test data transmission circuit when receiving a second control signal output by the controller, so that the controller transmits test data through the test data transmission circuit.
Optionally, the image data transmission circuit is a 4G module.
Optionally, the test data transmission circuit includes a USB type-C interface and a USB network card, and the third data transmission end of the switch switching circuit is connected to an upper computer through the USB type-C interface and the USB network card in sequence.
Optionally, the USBType-C interface is connected with the upper computer;
the switch switching circuit is further used for communicating the upper computer with the 4G module when receiving a third control signal output by the controller, so that firmware upgrading is performed on the 4G module through the upper computer.
Optionally, the camera test circuit further comprises a prompting device, and the prompting device is connected with the upper computer.
Optionally, the prompting device includes at least one of a buzzer and an indicator light.
Optionally, the switch switching circuit comprises an SGM7227 analog switch.
To achieve the above object, the present invention also provides a camera testing apparatus including the camera testing circuit as set forth in any one of the above.
In order to achieve the above object, the present invention also provides a camera test method applied to the camera test circuit as described in any one of the above, the camera test circuit including a controller, a switch switching circuit, an image data transmission circuit, and a test data transmission circuit, the camera test method comprising:
step S1, when the switch switching circuit receives a first control signal output by the controller, the controller is communicated with the image data transmission circuit, so that the controller transmits image data through the image data transmission circuit;
and S2, when the switch switching circuit receives a second control signal output by the controller, the controller is communicated with the test data transmission circuit, so that the controller transmits test data through the test data transmission circuit.
Optionally, the image data transmission circuit includes a 4G module, and the step S2 further includes:
and step S3, when the switch switching circuit receives a third control signal output by the controller, the 4G module is communicated with an upper computer, so that firmware upgrading is performed on the 4G module through the upper computer.
According to the technical scheme, the switch switching circuit is communicated with the controller and the image data transmission circuit or is communicated with the controller and the test data transmission circuit according to the control signal of the controller, namely, the USB interface of the controller is multiplexed in a time-sharing way by the switch switching circuit, and the circuit structure of the camera is not required to be adjusted manually.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a camera test circuit according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of a camera testing circuit according to the present invention;
fig. 3 is a flowchart illustrating an embodiment of a camera testing method according to the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
FIG. 1 is a block diagram of a camera test circuit according to an embodiment of the present invention.
The camera test circuit is composed of a controller 10, a switch switching circuit 20, an image data transmission circuit 30 and a test data transmission circuit 40; wherein, the selection end of the switch switching circuit 20 is connected with the output end of the controller 10 to receive the control signal of the controller; the first data transmission end of the switch switching circuit 20 is connected with the USB interface of the controller 10, the second data transmission end of the switch switching circuit 20 is connected with the image data transmission circuit 30, and the third data transmission end of the switch switching circuit 20 is connected with the test data transmission circuit 40.
The controller 10 is a central processing unit for image processing in the camera, and may be a microprocessor with an image processing function, such as a single chip microcomputer, a DSP, or an FPGA.
The switching circuit 20 may be constituted by an SGM7227 analog switch. The switch switching circuit 20 has a plurality of data transmission ports, i.e. a plurality of USB ports, for exchanging data among the controller 10, the image data transmission circuit 20 and the test data transmission circuit 30.
The image data transmission circuit 30 may be formed by combining one or more of a 2G module, a 4G module, and a 5G module.
The test data transmission circuit 40 may be composed of a USB type-C interface and a USB network card, that is, the third data transmission end of the switch switching circuit 20 is connected to an upper computer through the USB type-C interface and the USB network card connected in series.
The working principle of the circuit is as follows:
the controller 10 for image processing in the camera detects in real time or at regular time whether there is a production-test-configuration file in the inserted SD card, for example, whether there is a fac-test-config file. When the presence of the production-test-configuration file in the SD card is detected, a corresponding control signal is generated according to a specific parameter in the production-test-configuration file, for example, a testMode parameter in the production-test-configuration file is used to generate a corresponding control signal, for example, if the testMode parameter=0, the controller 10 generates the first control signal; if testMode parameter=1, the controller 10 generates a second control signal; if testMode parameter=2, the controller 10 generates a third control signal; and transmits the generated control signal to the switch switching circuit 20 to control the switch switching circuit 20 to enter a corresponding working state, for example, to control the corresponding branch circuit in the switch switching circuit 20 to be conducted.
Specifically, when the controller 10 generates the first control signal, the USB interface of the controller 10 is connected to the image data transmission circuit 30 via the switch switching circuit 20, and the controller 10 can implement image data interaction with a device externally connected to the image data transmission circuit 30.
When the controller 10 generates the second control signal, the USB interface of the controller 10 is connected to the test data transmission circuit 40 via the switch switching circuit 20, and the controller 10 can exchange test data with an external host computer of the test data transmission circuit 40.
In summary, in the present invention, the switch switching circuit 20 communicates the controller 10 with the image data transmission circuit 30 according to the control signal of the controller 10, or communicates the controller 10 with the test data transmission circuit 40, that is, the USB interface of the controller 10 is time-division multiplexed by using the switch switching circuit 20, without manually adjusting the circuit structure of the camera, so that the automatic test of the camera can be realized in the production process, the production test efficiency of the camera is effectively improved, and the production test cost of the camera is reduced.
For easy understanding, the image data transmission circuit 30 is a 4G module 301, and the test data transmission circuit 40 includes a USB type-C interface 401 and a USB network card 402 connected in series to illustrate the inventive concept of the present invention as shown in fig. 2.
The controller 10 for image processing in the camera detects in real time or at regular time whether there is a production-test-configuration file in the inserted SD card, for example, whether there is a fac-test-config file. When detecting that the SD card has the production-test-configuration file, the controller 10 generates a corresponding control signal according to the testMode parameter in the fac-test-config file, for example, if the testMode parameter=0, the controller 10 generates a first control signal, at this time, the corresponding branch in the switch switching circuit 20 is turned on, and the switch switching circuit 20 serves as a bridge to connect the controller 10 and the 4G module 301, so as to implement the image data interaction function.
If testMode parameter=1, the controller 10 generates a first control signal to be turned on by the corresponding branch in the switch switching circuit 20, and at this time, the controller 10 is connected to the 4G module 301, and the controller 10 obtains and stores related information of the 4G module 301, such as signal strength, identification code, etc.; then, the controller 10 generates a second control signal to the switch switching circuit 20 to control the other branch inside the switch switching circuit 20 to be turned on, at this time, the controller 10 is connected to the USB type-C interface 401, the USB network card 402 and the host computer 50 through the switch switching circuit 20, and the controller 10 can transmit the production test data to the host computer 50 for displaying and exchange data with the host computer 50.
Optionally, in an embodiment, the third data transmission end of the switch switching circuit 20 is connected to the usb type-C interface 401, and then the usb type-C interface 401 is externally connected to an upper computer 50, at this time, the upper computer 50 may transmit the upgrade data to the 4G module 301 of the camera through the switch switching circuit 20, so that firmware upgrade can be performed on the 4G module 301.
Specifically, if the testMode parameter=2, the controller 10 generates a third control signal to the switch switching circuit 20 to adjust the working state of the switch switching circuit 20, so that the upper computer 50 can communicate with the 4G module 301 via the USBType-C interface 401 and the switch switching circuit 20, the upper computer 50 can initiate firmware upgrade to the 4G module 301, and the 4G module 301 executes firmware upgrade operation, thereby realizing automation of production test and firmware upgrade, greatly reducing the production test cost of the camera, and improving the production test efficiency of the camera.
Optionally, in an embodiment, the camera testing circuit further includes a prompting device, and the prompting device is connected with the upper computer.
The prompting device can be composed of any one of a buzzer or an indicator lamp, can also be composed of a buzzer and an indicator lamp in a combined way, and can also be composed of a display screen, such as an LED display screen or an LCD display screen, and the like, and can be set according to actual needs.
When the camera performs production test, the upper computer analyzes and processes the test data of the camera and controls the prompting device to send out corresponding prompting information according to the test data, for example, if the test data is abnormal, the upper computer controls the indicator light to light a red light; if the test data are normal, the upper computer controls the indicator light to turn on a green light; or if the test data is abnormal, the upper computer controls the buzzer to sound and the like. The upper computer can be a computer, a display device for man-machine interaction, such as an LCD display screen, an LED display screen and the like, is arranged, and a worker can know the testing progress of the camera in real time through the upper computer.
The invention also provides a camera testing device which comprises the camera testing circuit. The detailed structure of the camera test circuit can refer to the above embodiments, and will not be described herein; it can be understood that, because the camera testing circuit is used in the camera testing device of the present invention, embodiments of the camera testing device of the present invention include all technical solutions of all embodiments of the camera testing circuit, and the achieved technical effects are identical, and are not described herein.
Referring to fig. 1, 2 and 3, the present invention further provides a camera testing method, which is applied to the above-mentioned camera testing circuit, and the camera testing circuit includes a controller 10, a switch switching circuit 20, an image data transmission circuit 30 and a test data transmission circuit 40, and the camera testing method includes the following steps:
step S1, when receiving a first control signal output by the controller 10, the switch switching circuit 20 connects the controller 10 and the image data transmission circuit 30, so that the controller 10 transmits image data via the image data transmission circuit 30;
in step S2, the switch switching circuit 20 connects the controller 10 and the test data transmission circuit 40 when receiving the second control signal output by the controller 10, so that the controller 10 transmits the test data via the test data transmission circuit 40.
The controller 10 is a central processing unit for image processing in the camera, and may be a microprocessor with an image processing function, such as a single chip microcomputer, a DSP, or an FPGA.
The switching circuit 20 may be constituted by an SGM7227 analog switch. The switch switching circuit 20 has a plurality of data transmission ports, i.e. a plurality of USB ports, for exchanging data among the controller 10, the image data transmission circuit 20 and the test data transmission circuit 30.
The image data transmission circuit 30 may be formed by combining one or more of a 2G module, a 4G module, and a 5G module.
The test data transmission circuit 40 may be composed of a USB type-C interface and a USB network card, that is, the third data transmission end of the switch switching circuit 20 is connected to an upper computer through the USB type-C interface and the USB network card connected in series.
The working principle of the circuit is as follows:
the controller 10 for image processing in the camera detects in real time or at regular time whether there is a production-test-configuration file in the inserted SD card, for example, whether there is a fac-test-config file. When the presence of the production-test-configuration file in the SD card is detected, a corresponding control signal is generated according to a specific parameter in the production-test-configuration file, for example, a testMode parameter in the production-test-configuration file is used to generate a corresponding control signal, for example, if the testMode parameter=0, the controller 10 generates the first control signal; if testMode parameter=1, the controller 10 generates a second control signal; if testMode parameter=2, the controller 10 generates a third control signal; and transmits the generated control signal to the switch switching circuit 20 to control the switch switching circuit 20 to enter a corresponding working state, for example, to control the corresponding branch circuit in the switch switching circuit 20 to be conducted.
Specifically, when the controller 10 generates the first control signal, the USB interface of the controller 10 is connected to the image data transmission circuit 30 via the switch switching circuit 20, and the controller 10 can implement image data interaction with a device externally connected to the image data transmission circuit 30.
When the controller 10 generates the second control signal, the USB interface of the controller 10 is connected to the test data transmission circuit 40 via the switch switching circuit 20, and the controller 10 can exchange test data with an external host computer of the test data transmission circuit 40.
In summary, in the present invention, the switch switching circuit 20 communicates the controller 10 with the image data transmission circuit 30 according to the control signal of the controller 10, or communicates the controller 10 with the test data transmission circuit 40, that is, the USB interface of the controller 10 is time-division multiplexed by using the switch switching circuit 20, without manually adjusting the circuit structure of the camera, so that the automatic test of the camera can be realized in the production process, the production test efficiency of the camera is effectively improved, and the production test cost of the camera is reduced.
Optionally, in an embodiment, the image data transmission circuit 30 includes a 4G module 401, and step S2 further includes:
and step S3, when the switch switching circuit receives a third control signal output by the controller, the 4G module is communicated with an upper computer, so that firmware upgrading is performed on the 4G module through the upper computer. The step S2 further includes:
optionally, in an embodiment, the third data transmission end of the switch switching circuit 20 is connected to the usb type-C interface, and then the usb type-C interface is externally connected to an upper computer 50, at this time, the upper computer 50 may transmit the upgrade data to the 4G module of the camera through the switch switching circuit 20, so as to upgrade the firmware of the 4G module.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The camera test circuit is characterized by comprising a controller, a switch switching circuit, an image data transmission circuit and a test data transmission circuit;
the selection end of the switch switching circuit is connected with the output end of the controller, the first data transmission end of the switch switching circuit is connected with the USB interface of the controller, the second data transmission end of the switch switching circuit is connected with the image data transmission circuit, and the third data transmission end of the switch switching circuit is connected with the test data transmission circuit;
the switch switching circuit is used for communicating the controller with the image data transmission circuit when receiving a first control signal output by the controller so as to enable the controller to transmit image data through the image data transmission circuit;
the switch switching circuit is also used for communicating the controller with the test data transmission circuit when receiving a second control signal output by the controller, so that the controller transmits test data through the test data transmission circuit.
2. The camera test circuit of claim 1, wherein the image data transmission circuit is a 4G module.
3. The camera testing circuit of claim 2, wherein the test data transmission circuit comprises a USB type-C interface and a USB network card, and the third data transmission end of the switch switching circuit is connected to an upper computer sequentially through the USB type-C interface and the USB network card.
4. The camera test circuit of claim 3, wherein the USBType-C interface is connected to the host computer;
the switch switching circuit is further used for communicating the upper computer with the 4G module when receiving a third control signal output by the controller, so that firmware upgrading is performed on the 4G module through the upper computer.
5. The camera test circuit of claim 3, further comprising a prompting device coupled to the host computer.
6. The camera test circuit of claim 5, wherein the prompting device comprises at least one of a buzzer and an indicator light.
7. The camera test circuit of any of claims 1-6, wherein the switch-switching circuit comprises an SGM7227 analog switch.
8. A camera test apparatus, characterized in that it comprises a camera test circuit as claimed in any one of claims 1 to 7.
9. A camera test method, wherein the camera test method is applied to the camera test circuit according to any one of claims 1 to 7, the camera test circuit including a controller, a switch switching circuit, an image data transmission circuit, and a test data transmission circuit, the camera test method comprising:
step S1, when the switch switching circuit receives a first control signal output by the controller, the controller is communicated with the image data transmission circuit, so that the controller transmits image data through the image data transmission circuit;
and S2, when the switch switching circuit receives a second control signal output by the controller, the controller is communicated with the test data transmission circuit, so that the controller transmits test data through the test data transmission circuit.
10. The camera testing method of claim 9, wherein the image data transmission circuit comprises a 4G module, and the step S2 further comprises:
and step S3, when the switch switching circuit receives a third control signal output by the controller, the 4G module is communicated with an upper computer, so that firmware upgrading is performed on the 4G module through the upper computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311373400.2A CN117119176B (en) | 2023-10-23 | 2023-10-23 | Camera test circuit, camera test device and camera test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311373400.2A CN117119176B (en) | 2023-10-23 | 2023-10-23 | Camera test circuit, camera test device and camera test method |
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| CN117119176A true CN117119176A (en) | 2023-11-24 |
| CN117119176B CN117119176B (en) | 2024-04-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021807A (en) * | 2007-02-01 | 2007-08-22 | 炬力集成电路设计有限公司 | USB device testing module, USB device and testing method thereof |
| CN109299022A (en) * | 2018-08-23 | 2019-02-01 | 联想(北京)有限公司 | A kind of control method and device of USB interface, storage medium |
| CN209525407U (en) * | 2018-12-31 | 2019-10-22 | 深圳市辰卓科技有限公司 | A kind of camera module abnormal detection circuit, device and camera module tester |
| CN110489283A (en) * | 2019-07-10 | 2019-11-22 | 上海闻泰信息技术有限公司 | The test device and method of USB interface |
| CN112306764A (en) * | 2019-07-26 | 2021-02-02 | 南昌欧菲生物识别技术有限公司 | Multi-station test system and method |
| CN115934608A (en) * | 2022-12-16 | 2023-04-07 | 高创(苏州)电子有限公司 | Terminal equipment and control method thereof |
-
2023
- 2023-10-23 CN CN202311373400.2A patent/CN117119176B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021807A (en) * | 2007-02-01 | 2007-08-22 | 炬力集成电路设计有限公司 | USB device testing module, USB device and testing method thereof |
| CN109299022A (en) * | 2018-08-23 | 2019-02-01 | 联想(北京)有限公司 | A kind of control method and device of USB interface, storage medium |
| CN209525407U (en) * | 2018-12-31 | 2019-10-22 | 深圳市辰卓科技有限公司 | A kind of camera module abnormal detection circuit, device and camera module tester |
| CN110489283A (en) * | 2019-07-10 | 2019-11-22 | 上海闻泰信息技术有限公司 | The test device and method of USB interface |
| CN112306764A (en) * | 2019-07-26 | 2021-02-02 | 南昌欧菲生物识别技术有限公司 | Multi-station test system and method |
| CN115934608A (en) * | 2022-12-16 | 2023-04-07 | 高创(苏州)电子有限公司 | Terminal equipment and control method thereof |
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