A signal detection device and system
By designing a signal detection device and using a deserialization chip and a processing chip to convert video and touch signals, efficient testing of in-vehicle screens was achieved, solving the problems of large testing systems and low efficiency in traditional testing methods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHAOQING XIAOPENG NEW ENERGY INVESTMENT CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional in-vehicle screen testing methods result in bulky testing systems that occupy a lot of space, have low testing efficiency, and are difficult to adapt to automotive cockpit systems with various screen sizes.
Design a signal detection device comprising a first signal interface, a deserialization chip, a processing chip, and a second signal interface, capable of converting and transmitting video and touch signals, and directly transmitting stylus or manual operation signals through the signal interface to achieve simultaneous testing of video and touch functions.
It improves the efficiency of in-vehicle screen testing, reduces the complexity and space occupation of the testing system, and adapts to the testing needs of various screen sizes.
Smart Images
Figure CN224328414U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic circuit technology, specifically to a signal detection device and system. Background Technology
[0002] With the increasing demands for intelligent vehicles and in-vehicle interaction, automotive cockpit systems are becoming more complex and integrated, with more and more new technologies being applied and in-vehicle touch screens appearing in various sizes.
[0003] When performing functional testing on in-vehicle screens, the traditional testing method involves connecting the corresponding display screen, taking pictures of the display screen with an industrial camera, and then using a robotic arm to control a stylus or manual operation for testing. However, since there may be multiple screen sizes in a single vehicle, the entire testing system hardware becomes extremely large, occupies a lot of space, has a complex design, and is inefficient. Utility Model Content
[0004] This application provides a signal detection device and system that improves the testing efficiency of in-vehicle screens.
[0005] In a first aspect, a signal detection device is provided, which is provided with a first signal interface, a deserialization chip, a processing chip and a second signal interface;
[0006] The first signal interface is used to receive a first video signal from the device under test (DUT) according to a first interface standard; the first signal interface is connected to the deserialization chip; the deserialization chip is used to convert the first video signal of the first interface standard into a second video signal of a second interface standard; the deserialization chip is connected to the processing chip; the processing chip is used to receive the second video signal and extract image data from the second video signal; the second signal interface is used to transmit the image data to a host computer.
[0007] The processing chip is also used to transmit the second touch signal of the second interface standard to the deserialization chip; the deserialization chip is used to convert the second touch signal of the second interface standard into the first touch signal of the first interface standard, and send it to the device under test through the first signal interface.
[0008] In one possible implementation, the signal detection device is further provided with a storage chip; the storage chip is connected to the processing chip to store the image data.
[0009] In one possible implementation, the storage chip is connected to the second signal interface, and the storage chip is used to transmit the image data to the host computer through the second signal interface.
[0010] In one possible implementation, the first interface standard is an interface standard that conforms to the video serial transmission protocol; the second interface standard is the I2C interface standard.
[0011] In one possible implementation, the first signal interface is a coaxial video output connector or a non-coaxial video output connector.
[0012] The second signal interface is a USB interface, an Ethernet interface, or a CAN interface.
[0013] Secondly, a signal detection system is provided, the system including a host computer, a device under test, and the aforementioned signal detection device.
[0014] In one possible implementation, the device under test includes a serialization chip, a system-on-a-chip (SoC), and a third signal interface; the SoC is connected to the serialization chip; the serialization chip is connected to the third signal interface; the SoC is used to convert a third video signal of the third interface standard into a first video signal of the first interface standard for output through the third signal interface.
[0015] In one possible implementation, the device under test further includes a fourth signal interface; the fourth signal interface is connected to a host computer to receive a trigger signal sent by the host computer; the trigger signal is used to trigger the system on-chip to output a third video signal of the third interface standard.
[0016] In one possible implementation, the device under test is a touchscreen device on the target vehicle.
[0017] The technical solution provided in this application may include the following beneficial effects:
[0018] In the signal detection device provided in this application, a first signal interface is used to receive a first video signal of a first interface standard from the device under test (DUT); the first signal interface is connected to a deserialization chip; the deserialization chip is used to convert the first video signal of the first interface standard into a second video signal of a second interface standard; the deserialization chip is connected to a processing chip; the processing chip is used to receive the second video signal and extract image data from the second video signal; the second signal interface is used to transmit the image data to a host computer; the processing chip is also used to transmit a second touch signal of the second interface standard to the deserialization chip; the deserialization chip is used to convert the second touch signal of the second interface standard into a first touch signal of the first interface standard and send it to the DUT through the first signal interface. The above-mentioned signal detection device can directly transmit stylus or manual operation signals to the DUT through the signal interface, and the DUT can directly receive video signals through the signal interface. This allows for simultaneous testing of touch functionality and video playback functionality without the need for a robotic arm, improving the testing efficiency of touchscreens. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of a signal detection device according to an exemplary embodiment.
[0021] Figure 2 This is a schematic diagram of the structure of a signal detection system provided in this application. Detailed Implementation
[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.
[0024] Figure 1 This is a schematic diagram illustrating the structure of a signal detection device 100 according to an exemplary embodiment. Figure 1As shown, the signal detection device 100 is equipped with a first signal interface 104, a deserialization chip 101, a processing chip 102, and a second signal interface 105.
[0025] The first signal interface 104 is used to receive a first video signal from the device under test (DUT) using a first interface standard; the first signal interface 104 is connected to the deserialization chip 101; the deserialization chip 101 is used to convert the first video signal of the first interface standard into a second video signal of a second interface standard; the deserialization chip 101 is connected to the processing chip; the processing chip 102 is used to receive the second video signal and extract image data from the second video signal; the second signal interface 105 is used to transmit the image data to the host computer.
[0026] The processing chip 102 is also used to transmit the second touch signal of the second interface standard to the deserialization chip; the deserialization chip 101 is used to convert the second touch signal of the second interface standard into the first touch signal of the first interface standard, and send it to the device under test through the first signal interface 104.
[0027] In this embodiment, the interface is designed to receive a first video signal output by the device under test (DUT). This video signal conforms to a first interface standard, such as HDMI (High Definition Multimedia Interface), DisplayPort, or MIPI (Mobile Industry Processor Interface). Since the output signal of the DUT uses various interface standards applied in the industry, the first signal interface, as an input, can be compatible with the standard signal output of external devices.
[0028] The received first video signal is processed by a deserialization chip. The main function of this chip is to convert the video signal from the first interface standard into a second interface standard video signal, which is easier to process later.
[0029] In addition to video signals, the deserialization chip is also responsible for converting touch signals. When the processing chip transmits the touch signal under the second interface standard to the deserialization chip, the chip converts it into a touch signal under the first interface standard before feeding it back to the device under test. The bidirectional conversion function of the deserialization chip enables the signal detection device to not only acquire video signals but also monitor and provide feedback on touch input, forming a complete interactive link.
[0030] For the processing chip, it can extract image data from the video signal, enabling real-time acquisition of the screen display. Through image processing algorithms, the chip can preprocess the acquired image, extract key areas, or perform comparative detection for subsequent analysis by the host computer.
[0031] In addition, the processing chip is also responsible for receiving touch signals (such as multi-touch data or capacitive touch signals) from the video transmission module of the second interface standard, processing these touch signals, and then transmitting them to the deserialization chip, which completes the conversion from the second interface standard to the first interface standard and then feeds them back to the device under test, realizing a complete closed loop of bidirectional touch communication.
[0032] In one possible implementation, the signal detection device is further provided with a storage chip 103; the storage chip 103 is connected to the processing chip 102 to store the image data.
[0033] Optionally, the storage chip can be flash memory, EEPROM, or other types of storage chips. The storage chip is connected to the processing chip via a high-speed data bus (such as SPI or SDIO), so that the captured video image data can be written to the storage unit in real time.
[0034] Furthermore, the storage chip 103 is connected to the second signal interface 105, and the storage chip 103 is used to transmit the image data to the host computer through the second signal interface 105.
[0035] After the processing chip extracts image data from the received video signal, the data is first stored in the memory chip. The stored data can be buffered during subsequent transmission or used as a backup for later comparison and error troubleshooting. At this point, the memory chip acts as an intermediate buffer layer, helping to avoid data loss due to transmission delays or packet loss from the host computer, ensuring the integrity and reliability of the image data.
[0036] Optionally, the first interface standard is an interface standard conforming to a video serial transmission protocol (e.g., LVDS, HDMI, or MIPIDSI); the second interface standard is the I2C interface standard. Video serial transmission protocols enable high-speed, low-interference video data transmission, commonly used in automotive displays and camera applications. The processing chip receives high-quality video signals through the first signal interface, and the deserialization chip converts them into an I2C protocol format usable by the internal processing module.
[0037] In one possible implementation, the first signal interface 104 is a coaxial video output connector or a non-coaxial video output connector; the second signal interface 105 is a USB interface, an Ethernet interface, or a CAN interface.
[0038] For further details, please refer to... Figure 2 , Figure 2 This is a schematic diagram of the structure of a signal detection system provided in this application, such as... Figure 2As shown, the signal detection system includes the aforementioned signal detection device, host computer 207, and device under test 201.
[0039] In one possible implementation, the device under test 201 includes a serialization chip 203, a system-on-a-chip 202, and a third signal interface 204; the system-on-a-chip 202 is connected to the serialization chip 203; the serialization chip 203 is connected to the third signal interface 204; the system-on-a-chip 202 is used to convert a third video signal of the third interface standard into a first video signal of the first interface standard, so as to output it through the third signal interface 204.
[0040] In one possible implementation, the device under test further includes a fourth signal interface 205; the fourth signal interface 205 is connected to the host computer 208 to receive a trigger signal sent by the host computer 208; the trigger signal is used to trigger the system on-chip 202 to output the third video signal of the third interface standard.
[0041] Optionally, the device under test 201 is a touch screen device on the target vehicle.
[0042] Specifically, the system involved in this application embodiment includes five parts: device under test 201, signal detection device 100, host computer 208, video transmission line 209, and USB cable 210.
[0043] Among them, the device under test 201 is the object to be tested. It generates video signal data through the system on-chip 202 and sends it to the serialization chip 203. At the same time, the system on-chip 202 also controls the serialization chip 203 and monitors and reads the trigger signal (i.e., the touch screen signal) through its own I2C bus communication and another I2C bus communication. The third video signal of the third interface standard is serialized by the serialization chip 203 and becomes the first video signal of the first interface standard, which is output through the third signal interface 204. Optionally, the third signal interface is a coaxial FAKRA connector. The communication interaction between the host computer 208 and the device under test 201 is realized through the connection of the fourth signal interface 205. Optionally, the fourth signal interface is a USB interface.
[0044] The signal detection device 100 receives the first video signal transmitted from the device under test 201 via the video transmission line 209 and the first signal interface 104. Then, it deserializes the video data using the deserialization chip 101 to obtain the second video data, which is then transmitted to the processing chip 102 for data processing. The data processing includes video data processing, triggering the capture of a frame image signal, and storing the captured image signal in the storage chip 103. During the test, under the trigger control of the host computer 208, the image stored in the storage chip 103 is transmitted to the host computer 208 for processing via the second signal interface 105 and the USB cable 210. At the same time, the processing chip 102 can output simulated touch signal data through its own I2C communication bus and transmit it to the on-chip system 202 in the device under test via the deserialization chip 101, the first signal interface 104, the video transmission line 209, the third signal interface 204, and the serialization chip 203 for touch data response processing.
[0045] The host computer 208 is mainly responsible for triggering and controlling corresponding actions, simulating data output, and processing the acquired data during the testing process. First, it triggers the device under test 201 to output a video signal through the USB cable 210. Then, it communicates with the signal detection device 100 through the USB cable 210 to control the processing chip 102 to capture a frame of video signal and save it as an image to the storage chip 103. Next, it receives the captured image sent by the signal detection device 100, compares it with the template image, and outputs the confirmation result. Finally, it simulates and generates the set touch coordinate information and transmits it to the processing chip 102 through the USB cable 210.
[0046] The video transmission line is used to transmit the video signal output by the device under test 201 and the touch signal output by the signal detection device 100 and fed back to the device under test 201.
[0047] The USB cable is used to transmit communication signals between the host computer 208 and the device under test 201, as well as between the host computer 208 and the signal detection device 100.
[0048] In summary, in the signal detection device provided in this application, a first signal interface is used to receive a first video signal from the device under test (DUT) using a first interface standard; the first signal interface is connected to a deserialization chip; the deserialization chip is used to convert the first video signal of the first interface standard into a second video signal of the second interface standard; the deserialization chip is connected to a processing chip; the processing chip is used to receive the second video signal and extract image data from the second video signal; the second signal interface is used to transmit the image data to a host computer; the processing chip is also used to transmit a second touch signal of the second interface standard to the deserialization chip; the deserialization chip is used to convert the second touch signal of the second interface standard into a first touch signal of the first interface standard and send it to the DUT through the first signal interface. The above-mentioned signal detection device can directly transmit stylus or manual operation signals to the DUT through the signal interface, and the DUT can directly receive video signals through the signal interface, enabling touch operation testing without the need for a robotic arm, thus improving the testing efficiency of touchscreens.
[0049] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0050] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.
Claims
1. A signal detection device, characterized in that, The signal detection device is equipped with a first signal interface, a deserialization chip, a processing chip, and a second signal interface. The first signal interface is used to receive a first video signal from the device under test (DUT) according to a first interface standard; the first signal interface is connected to the deserialization chip; the deserialization chip is used to convert the first video signal of the first interface standard into a second video signal of a second interface standard; the deserialization chip is connected to the processing chip; the processing chip is used to receive the second video signal and extract image data from the second video signal; the second signal interface is used to transmit the image data to a host computer. The processing chip is also used to transmit the second touch signal of the second interface standard to the deserialization chip; the deserialization chip is used to convert the second touch signal of the second interface standard into the first touch signal of the first interface standard, and send it to the device under test through the first signal interface.
2. The signal detection device according to claim 1, characterized in that, The signal detection device is also equipped with a storage chip; the storage chip is connected to the processing chip to store the image data.
3. The signal detection device according to claim 2, characterized in that, The storage chip is connected to the second signal interface, and the storage chip is used to transmit the image data to the host computer through the second signal interface.
4. The signal detection device according to claim 1, characterized in that, The first interface standard is an interface standard that conforms to the video serial transmission protocol; the second interface standard is the I2C interface standard.
5. The signal detection device according to claim 4, characterized in that, The first signal interface is a coaxial video output connector or a non-coaxial video output connector; The second signal interface is a USB interface, an Ethernet interface, or a CAN interface.
6. A signal detection system, characterized in that, The system includes a host computer, a device under test, and a signal detection device as described in any one of claims 1 to 5.
7. The system according to claim 6, characterized in that, The device under test includes a serialization chip, a system-on-a-chip (SoC), and a third signal interface; the SoC is connected to the serialization chip; the serialization chip is connected to the third signal interface; the SoC is used to convert a third video signal of the third interface standard into a first video signal of the first interface standard, so as to output it through the third signal interface.
8. The system according to claim 7, characterized in that, The device under test further includes a fourth signal interface; the fourth signal interface is connected to a host computer to receive a trigger signal sent by the host computer; the trigger signal is used to trigger the system-on-chip to output the third video signal of the third interface standard.
9. The system according to any one of claims 6 to 8, characterized in that, The device under test is a touchscreen device on the target vehicle.