Signal acquisition system and frequency converter
By setting a frequency converter between the sensor and the serializer, converting the pixel clock signal frequency output by the sensor to adapt it to the input frequency of the serializer, solving the signal transmission problem caused by the inadequacy of the sensor and the serializer frequency, and achieving stable signal transmission.
Patent Information
- Application Number
- CN202422088381.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, the output pixel clock frequency of the sensor is not matched with the input pixel clock frequency of the serializer, resulting in the inability to transmit signals.
Design a signal acquisition system, including a frequency converter, sensor and serializer. The frequency converter converts the frequency of the first pixel clock signal output by the sensor to the input pixel clock frequency adapted to the serializer, and performs corresponding conversions according to the data transmission rate.
The signal transmission between the sensor and the serializer whose pixel clock frequency is not adapted is realized, and the signal transmission problem caused by the inadequacy of the sensor and the serializer is solved.
Smart Images
Figure CN223040088U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of signal processing, and particularly to a signal acquisition system and a frequency converter. Background Art
[0002] Currently, during the driving of autonomous vehicles or intelligent driving vehicles, it is usually necessary to transmit the signals collected by image sensors disposed on the vehicle over a long distance to a processor inside the vehicle. Long distance means that due to the large size of the vehicle body, the transmission distance between the sensors mounted on the vehicle body and the processor configured inside the vehicle body is relatively long. Therefore, it is proposed to use a serializer to convert the transmitted signals into serial signals, which can then be transmitted to a deserialzier through a serial transmission cable. Thus, the purpose of combining long-distance signal transmission and long-distance power supply into one is achieved.
[0003] Among them, the models of sensors and serializers are diverse, and the signal transmission frequencies of different models of sensors and serializers are also different. When the sensor transmits signals to the serializer, problems such as signal transmission being impossible due to different signal transmission frequencies are usually encountered.
[0004] For example, the pixel clock frequency of the pixel clock signal (PCLK) of the video output interface of a CMOS sensor with a relatively low resolution (such as an infrared sensor and a ToF sensor, etc.) is usually relatively low (lower than 20 MHz), while the serializer input interface usually has a minimum requirement for the pixel clock frequency of the input video pixel clock signal (PCLK) (such as 37.5 MHz). This will result in a situation where the sensor and the serializer are not compatible and signal transmission is impossible.
[0005] Aiming at the technical problem in the above-mentioned existing technology that the output pixel clock frequency of the sensor and the input pixel clock frequency of the serializer are not compatible and signal transmission is impossible, no effective solution has been proposed yet. Summary of the Utility Model
[0006] The utility model provides a signal acquisition system and a frequency converter to at least solve the technical problem in the existing technology that the output pixel clock frequency of the sensor and the input pixel clock frequency of the serializer are not compatible and signal transmission is impossible.
[0007] According to one aspect of the present application, a signal acquisition system is provided, including: a frequency converter, a sensor, and a serializer. The frequency converter is connected to the sensor and is configured to convert a first pixel clock frequency of a first pixel clock signal corresponding to pixel data transmitted by the sensor into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer. The frequency converter is connected to the serializer and is configured to transmit a second pixel clock signal having the second pixel clock frequency to the serializer and transmit the pixel data to the serializer according to a data transmission rate corresponding to the second pixel clock signal.
[0008] Optionally, the frequency converter includes: a first memory, a retimer, and a second memory. The first memory is configured to store pixel data corresponding to the first pixel clock signal. The retimer is connected to the first memory and is configured to generate a second pixel clock signal having the second pixel clock frequency, acquire the pixel data stored in the first memory according to a data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory according to a data transmission rate corresponding to the second pixel clock signal. The second memory is configured to store the pixel data corresponding to the second pixel clock signal transmitted by the retimer.
[0009] Optionally, the frequency converter further includes: a signal input interface for receiving the first pixel clock signal transmitted by the sensor.
[0010] Optionally, the frequency converter further includes: a signal output interface for outputting the second pixel clock signal.
[0011] Optionally, the frequency converter includes at least one of the following frequency converters: a MIPI signal frequency converter and an LVCMOS frequency converter.
[0012] Optionally, the frequency converter further includes: a MIPI CSI-2 controller for transmitting the pixel data sent by the signal input interface to the first memory.
[0013] Optionally, the frequency converter further includes: a MIPI CSI controller for transmitting the pixel data transmitted by the second memory to the signal output interface.
[0014] According to another aspect of the present application, a frequency converter is provided. The frequency converter is configured to convert a first pixel clock frequency of a first pixel clock signal corresponding to pixel data transmitted by the sensor into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer. The frequency converter is connected to the serializer and is configured to transmit a second pixel clock signal having the second pixel clock frequency to the serializer and transmit the pixel data to the serializer according to a data transmission rate corresponding to the second pixel clock signal.
[0015] Optionally, the frequency converter includes: a first memory, a retimer, and a second memory, where the first memory is used to store pixel data corresponding to a first pixel clock signal; the retimer is connected to the first memory and is used to generate a second pixel clock signal with a second pixel clock frequency, obtain the pixel data stored in the first memory according to the data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory according to the data transmission rate corresponding to the second pixel clock signal; and the second memory is used to store the pixel data corresponding to the second pixel clock signal transmitted by the retimer.
[0016] Optionally, the frequency converter further includes: a signal input interface for receiving the first pixel clock signal transmitted by the sensor.
[0017] In the embodiments of the present application, in the technical solution, a frequency converter is provided between a sensor with an inadaptable pixel clock frequency and a serializer. The frequency converter converts the first pixel clock frequency of the first pixel clock signal output by the sensor into a second pixel clock frequency adaptable to the input pixel clock frequency of the serializer, and correspondingly converts the data transmission rate of the pixel data signal, so that the pixel data signal always corresponds to the pixel clock signal. Thus, the frequency converter transmits the second pixel clock signal with the second pixel clock frequency and the pixel data signal to the serializer. Since the second pixel clock frequency of the second pixel clock signal is adaptable to the input pixel clock frequency of the serializer, the technical effect of signal transmission between a sensor with an inadaptable pixel clock frequency and a serializer is achieved. Furthermore, the technical problem in the prior art that the output pixel clock frequency of the sensor and the input pixel clock frequency of the serializer are inadaptable and signal transmission cannot be performed is solved.
[0018] From the following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings, those skilled in the art will become more clear about the above and other objects, advantages, and features of the present utility model. Description of the Drawings
[0019] Hereinafter, some specific embodiments of the present application will be described in detail with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0020] Figure 1 is a schematic diagram of a signal acquisition system according to an embodiment of the present application;
[0021] Figure 2 is a schematic diagram of a frequency converter of a signal acquisition system according to an embodiment of the present application;
[0022] Figure 3Another schematic diagram of the frequency converter of the signal acquisition system according to an embodiment of the present application;
[0023] Figure 4 Yet another schematic diagram of the frequency converter of the signal acquisition system according to an embodiment of the present application;
[0024] Figure 5 Still another schematic diagram of the frequency converter of the signal acquisition system according to an embodiment of the present application; and
[0025] Figure 6 An overall schematic diagram of the frequency converter of the signal acquisition system according to an embodiment of the present application. Detailed implementation manners
[0026] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0027] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such terms may be interchanged under appropriate circumstances for the embodiments of the present utility model described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0029] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0030] Figure 1 An exemplary schematic diagram of the signal acquisition system described in the embodiments of the present application is shown. Refer to Figure 1 As shown, a signal acquisition system is provided, including: a frequency converter 100, a sensor 200, and a serializer 300. The frequency converter 100 is connected to the sensor 200 and is configured to convert the first pixel clock frequency of the first pixel clock signal corresponding to the pixel data transmitted by the sensor 200 into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer 300. The frequency converter 100 is connected to the serializer 300 and is configured to transmit the second pixel clock signal having the second pixel clock frequency to the serializer 300 and transmit the pixel data to the serializer 300 according to the data transmission rate corresponding to the second pixel clock signal.
[0031] As described in the background art, there are various models of sensors and serializers, and the signal transmission frequencies of different models of sensors and serializers are also different. When a sensor transmits a signal to a serializer, problems such as signal transmission failure due to different signal transmission frequencies often occur. For example, the pixel clock frequency of the pixel clock signal (PCLK) at the video output interface of a CMOS sensor with a relatively low resolution (such as an infrared sensor and a ToF sensor, etc.) is usually relatively low (lower than 20 MHz), while the serializer input interface usually has a minimum requirement for the pixel clock frequency of the input video pixel clock signal (PCLK) (such as 37.5 MHz). This can lead to a situation where the sensor and the serializer are not compatible and signal transmission cannot be performed.
[0032] To address the above technical problems, through the technical solution of the embodiments of the present application, the sensor 200 acquires a pixel data signal corresponding to the pixel data and a pixel clock signal corresponding to the pixel data signal (i.e., the first pixel clock signal). Then, the sensor 200 needs to transmit the pixel data signal and the first pixel clock signal to the serializer 300. The pixel clock frequency of the first pixel clock signal transmitted by the sensor 200 (i.e., the first pixel clock frequency) does not match the input pixel clock frequency that the serializer can receive. For example, the output pixel clock frequency supported by the video output interface of the sensor is relatively low, at 20 MHz. The input pixel clock frequency supported by the input interface of the serializer is relatively high, at 37.5 MHz. Thus, the sensor 200 transmits the first pixel clock signal having the first pixel clock frequency to the frequency converter 100 for signal frequency conversion. Then, the frequency converter 100 receives the first pixel clock signal transmitted by the sensor 200, converts the first pixel clock frequency of the first pixel clock signal into a pixel clock frequency of 37.5 MHz (i.e., the second pixel clock frequency) adapted to the input pixel clock frequency of the serializer 300, and generates a second pixel clock signal having the second pixel clock frequency.
[0033] Further, after the frequency converter 100 performs frequency conversion on the first pixel clock frequency of the first pixel clock signal, a data transmission rate corresponding to the transmitted pixel data is generated according to the obtained second pixel frequency after conversion. Wherein the data transmission rate = second pixel clock frequency * number of bus bits / 8. The number of bus bits is, for example, 32 bits. Then, the frequency converter 100 transmits the pixel data to the serializer 300 in the form of a pixel data signal according to the data transmission rate corresponding to the second pixel clock signal, and transmits the second pixel clock signal to the serializer 300. Then, the serializer 300 receives the pixel data signal and the corresponding second pixel clock signal transmitted by the frequency converter 100 and uses them as input signals.
[0034] It should be noted that the input pixel clock frequency of the serializer is usually within a preset range, such as 37.5 MHz to 100 MHz. Therefore, in this technical solution, only the first pixel clock frequency needs to be converted to the preset range, that is, any frequency between 37.5 MHz and 100 MHz.
[0035] Therefore, in this technical solution, a frequency converter is provided between the sensor with mismatched pixel clock frequencies and the serializer. The frequency converter converts the first pixel clock frequency of the first pixel clock signal output by the sensor into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer, and correspondingly converts the data transmission rate of the pixel data signal, so that the pixel data signal and the pixel clock signal are always corresponding. Then, the frequency converter transmits the second pixel clock signal with the second pixel clock frequency and the pixel data signal to the serializer. Since the second pixel clock frequency of the second pixel clock signal is adapted to the input pixel clock frequency of the serializer, the technical effect of signal transmission between the sensor with mismatched pixel clock frequencies and the serializer is achieved. Furthermore, the technical problem in the prior art that the output pixel clock frequency of the sensor and the input pixel clock frequency of the serializer are mismatched and signal transmission cannot be performed is solved.
[0036] Optionally, the frequency converter 100 includes: a first memory 110, a retimer 120, and a second memory 130. The first memory 110 is used to store pixel data corresponding to the first pixel clock signal; the retimer 120 is connected to the first memory 110 and is used to generate a second pixel clock signal with the second pixel clock frequency, obtain the pixel data stored in the first memory 110 according to the data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory 130 according to the data transmission rate corresponding to the second pixel clock signal; and the second memory 130 is used to store the pixel data corresponding to the second pixel clock signal transmitted by the retimer 120.
[0037] Specifically, referring to Figure 2 As shown, the sensor 200 transmits a first pixel clock signal having a first pixel clock frequency to the frequency converter 100, and the sensor 200 transmits pixel data to the frequency converter 100 in the form of a pixel data signal according to the data transmission rate corresponding to the first pixel clock signal. The first memory 110 of the frequency converter 100 stores the pixel data.
[0038] Further, the retimer 120 of the frequency converter 100 generates a pixel clock frequency having the same frequency as the input pixel clock frequency of the serializer 300 according to the input pixel clock frequency of the serializer 300. Thus, the retimer 120 converts the first pixel clock frequency of the first pixel clock signal into a pixel clock frequency adapted to the input pixel clock frequency of the serializer 300 (i.e., the second pixel clock frequency), and generates a second pixel clock signal having the second pixel clock frequency. After that, the retimer 120 determines a corresponding data transmission rate (i.e., the second data transmission rate) for transmitting pixel data according to the second pixel clock signal. Then, the retimer 120 obtains a corresponding amount of pixel data from the first memory 110 according to the first data transmission rate, and transmits the pixel data in the form of a pixel data signal according to the data transmission rate corresponding to the second pixel clock signal, and further transmits the pixel data to the second memory 130 for storage. Since the sensor 200 transmits the pixel data signal at the data transmission rate corresponding to the first pixel clock signal, and the retimer 120 transmits the pixel data signal at the data transmission rate corresponding to the second pixel clock signal, and the data transmission rate corresponding to the second pixel clock signal is greater than the data transmission rate corresponding to the first pixel clock signal, when the retimer 120 transmits the pixel data signal at the data transmission rate corresponding to the second pixel clock signal, it is necessary to wait for the sensor 200 to transmit sufficient pixel data to the first memory 110 before the retimer 120 can obtain pixel data from the first memory 110 and transmit the pixel data.
[0039] Thus, in this technical solution, by using the first memory as a buffer for pixel data transmission, the retimer can transmit pixel data at a faster data transmission rate, avoiding transmission interruption caused by insufficient data.
[0040] Optionally, the frequency converter 100 further includes: a signal input interface 140 for receiving the first pixel clock signal transmitted by the sensor 200.
[0041] Specifically, referring to Figure 3As shown, the sensor 200 transmits the pixel data signal and the first pixel clock signal of the pixel data to the frequency converter 100, and the frequency converter 100 receives the pixel data signal and the first pixel clock signal through the set input interface 140. This ensures the accurate transmission of the signal.
[0042] Optionally, the frequency converter 100 further includes: a signal output interface 150 for outputting a second pixel clock signal.
[0043] Specifically, refer to Figure 4 As shown, the second memory 130 of the frequency converter 100 transmits the pixel data signal and the corresponding second pixel clock signal to the signal output interface 150. The signal output interface 150 is connected to the serializer 300 and transmits the pixel data signal and the second pixel clock signal to the serializer 300. This ensures the accurate transmission of the signal.
[0044] Optionally, the frequency converter 100 includes at least one of the following frequency converters: an MIPI signal frequency converter and an LVCMOS frequency converter.
[0045] Specifically, different serializers need to be connected to the matching frequency converters. For example, for the serializer of model UB933, the matching frequency converter is an LVCMOS frequency converter. The LVCMOS frequency converter is used to perform frequency conversion on the CMOS signal (i.e., the pixel data signal).
[0046] For example, for the serializer of model UB953, the matching frequency converter is an MIPI signal frequency converter. The MIPI signal frequency converter is used to perform frequency conversion on the MIPI signal (i.e., the pixel data signal).
[0047] Thus, this technical solution has a matching frequency converter for different serializers, so that most sensors and serializers can be connected for signal transmission, reducing the limitations between sensors and serializers.
[0048] Optionally, the frequency converter 100 further includes: an MIPI CSI-2 controller 160 for transmitting the pixel data sent by the signal input interface 140 to the first memory 110.
[0049] Specifically, refer to Figure 5As shown, when the frequency converter is a MIPI signal frequency converter, in addition to the signal input interface 140, the first memory 110, the retimer 120, the second memory 130, and the signal output interface 150, the frequency converter 100 further includes a MIPI CSI-2 controller 160, and the transmitted pixel data signal is a MIPI signal. Thus, after the frequency converter 100 receives a MIPI signal through the signal input interface 140 according to the pixel clock frequency of the MIPI signal (for example, the first pixel clock frequency of the MIPI signal), it will transmit the MIPI signal to the MIPI CSI-2 controller 160 according to the pixel clock frequency of the MIPI signal (i.e., the first pixel clock frequency of the MIPI signal). The MIPI CSI-2 controller 160 analyzes the MIPI signal to obtain pixel data and stores the pixel data in the first memory 110. Therefore, this technical solution ensures that the MIPI signal is read and transmitted at the correct time point through the MIPI CSI-2 controller 160, ensuring stable signal transmission.
[0050] Optionally, the frequency converter 100 further includes: a MIPI CSI controller 170, configured to transmit the pixel data transmitted by the second memory 130 to the signal output interface 150.
[0051] Specifically, referring to Figure 6 As shown, when the frequency converter is a MIPI signal frequency converter, the frequency converter 100 further includes a MIPI CSI controller 170, and the transmitted pixel data signal is a MIPI signal. The MIPI CSI controller 170 is respectively connected to the second memory 130 and the signal output interface 150. Thus, the MIPI CSI controller 170 reads pixel data from the second memory 130 at the second pixel clock frequency of the MIPI signal, and then the MIPI CSI controller 170 transmits the pixel data to the signal output interface 150 in the form of a MIPI signal according to the second pixel clock frequency. Therefore, this technical solution ensures that the MIPI signal is read and transmitted at the correct time point through the MIPI CS controller 170, ensuring stable signal transmission.
[0052] Thus, according to the first aspect of this embodiment, in this technical solution, a frequency converter is provided between a sensor with a mismatched pixel clock frequency and a serializer. The frequency converter converts the first pixel clock frequency of the first pixel clock signal output by the sensor into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer, and correspondingly converts the data transmission rate of the pixel data signal, so that the pixel data signal always corresponds to the pixel clock signal. Then, the frequency converter transmits the second pixel clock signal with the second pixel clock frequency and the pixel data signal to the serializer. Since the second pixel clock frequency of the second pixel clock signal is adapted to the input pixel clock frequency of the serializer, the technical effect of signal transmission between the sensor with a mismatched pixel clock frequency and the serializer is achieved. Furthermore, the technical problem in the prior art that the output pixel clock frequency of the sensor and the input pixel clock frequency of the serializer are mismatched and signal transmission cannot be performed is solved.
[0053] In addition, according to the second aspect of this embodiment, a frequency converter 100 is provided. The frequency converter 100 is configured to convert the first pixel clock frequency of the first pixel clock signal corresponding to the pixel data transmitted by the sensor 200 into a second pixel clock frequency adapted to the input pixel clock frequency of the serializer 300; and the frequency converter 100 is connected to the serializer 300 and is configured to transmit the second pixel clock signal with the second pixel clock frequency to the serializer 300 and transmit the pixel data to the serializer 300 according to the data transmission rate corresponding to the second pixel clock signal.
[0054] Optionally, the frequency converter 100 includes: a first memory 110, a retimer 120, and a second memory 130. The first memory 110 is configured to store pixel data corresponding to the first pixel clock signal; the retimer 120 is connected to the first memory 110 and is configured to generate a second pixel clock signal with the second pixel clock frequency, obtain the pixel data stored in the first memory 110 according to the data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory 130 according to the data transmission rate corresponding to the second pixel clock signal; and the second memory 130 is configured to store the pixel data corresponding to the second pixel clock signal transmitted by the retimer 120.
[0055] Optionally, the frequency converter 100 further includes: a signal input interface 140 for receiving the first pixel clock signal transmitted by the sensor 200.
[0056] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.
[0057] For the sake of convenience in description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.
[0058] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0059] As mentioned above, the above are only the preferred specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.
Claims
1. A signal acquisition system, characterized in that: include: A frequency converter (100), a sensor (200) and a serializer (300), wherein The frequency converter (100) is connected to the sensor (200) and is used to convert a first pixel clock frequency of a first pixel clock signal corresponding to pixel data transmitted by the sensor (200) into a second pixel clock frequency adapted to an input pixel clock frequency of the serializer (300); as well as The frequency converter (100) is connected to the serializer (300) and is used to transmit a second pixel clock signal having the second pixel clock frequency to the serializer (300), and transmit the pixel data to the serializer (300) according to a data transmission rate corresponding to the second pixel clock signal.
2. The signal acquisition system according to claim 1, characterized in that: The frequency converter (100) comprises: a first memory (110), a retimer (120) and a second memory (130), wherein The first memory (110) is used to store pixel data corresponding to the first pixel clock signal; The retimer (120) is connected to the first memory (110) and is used to generate a second pixel clock signal having a second pixel clock frequency, and obtain the pixel data stored in the first memory (110) according to a data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory (130) according to a data transmission rate corresponding to the second pixel clock signal; and The second memory (130) is used to store pixel data corresponding to the second pixel clock signal transmitted by the retimer (120).
3. The signal acquisition system according to claim 2, characterized in that: The frequency converter (100) further comprises: a signal input interface (140) for receiving the first pixel clock signal transmitted by the sensor (200).
4. The signal acquisition system according to claim 2, characterized in that: The frequency converter (100) further comprises: a signal output interface (150) for outputting the second pixel clock signal.
5. The signal acquisition system according to claim 1, characterized in that: The frequency converter (100) comprises at least one of the following frequency converters: a MIPI signal frequency converter and a LVCMOS frequency converter.
6. The signal acquisition system according to claim 3, characterized in that: The frequency converter (100) further comprises: a MIPICSI-2 controller (160) configured to transmit the pixel data sent by the signal input interface (140) to the first memory (110).
7. The signal acquisition system according to claim 4, characterized in that: The frequency converter (100) further comprises: a MIPICSI controller (170) configured to transmit the pixel data transmitted by the second memory (130) to the signal output interface (150).
8. A frequency converter (100), characterized in that: The frequency converter (100) is used to convert a first pixel clock frequency of a first pixel clock signal corresponding to pixel data transmitted by the sensor (200) into a second pixel clock frequency adapted to an input pixel clock frequency of the serializer (300); as well as The frequency converter (100) is connected to the serializer (300) and is used to transmit a second pixel clock signal having the second pixel clock frequency to the serializer (300), and transmit the pixel data to the serializer (300) according to a data transmission rate corresponding to the second pixel clock signal.
9. The frequency converter (100) according to claim 8, characterized in that The frequency converter (100) comprises: a first memory (110), a retimer (120) and a second memory (130), wherein The first memory (110) is used to store pixel data corresponding to the first pixel clock signal; The retimer (120) is connected to the first memory (110) and is used to generate a second pixel clock signal having a second pixel clock frequency, and obtain the pixel data stored in the first memory (110) according to a data transmission rate corresponding to the first pixel clock signal, and transmit the pixel data to the second memory (130) according to a data transmission rate corresponding to the second pixel clock signal; and The second memory (130) is used to store pixel data corresponding to the second pixel clock signal transmitted by the retimer (120).
10. The frequency converter (100) according to claim 9, characterized in that The frequency converter (100) further comprises: a signal input interface (140) for receiving the first pixel clock signal transmitted by the sensor (200).