Video signal shunt output circuit and vehicle-mounted control system
By combining the signal splitter module and the decoding module, the problem of insufficient transmission bandwidth for multi-screen output in the vehicle system is solved, achieving efficient multi-screen output and improved video clarity.
Patent Information
- Application Number
- CN202423068948.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The daisy-chain mode of multi-screen output in existing in-vehicle systems has low transmission bandwidth, resulting in blurry video.
The system employs a combination of a signal splitting module and a decoding module. The signal splitting module uses a splitting chip to divide the composite video signal into multiple independent video signals, while the decoding module converts the independent video signals into output signals and outputs them to the display unit through multiple decoding units, thereby achieving multi-screen output.
It increases transmission bandwidth, avoids video blurring, and enables efficient multi-screen output.
Smart Images
Figure CN223809822U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle system technical field especially relates to a video signal branch output circuit and vehicle control system. BACKGROUND
[0002] In the vehicle system control system, generally through daisy chain mode to realize multi-screen output, that is, through daisy chain mode to divide a video signal into multiple output signals and output to different display screens. However, the transmission bandwidth of daisy chain mode is low, which is easy to cause video blur. SUMMARY
[0003] The utility model provides a video signal branch output circuit and vehicle control system, aims at solving the low transmission bandwidth of the current multi-screen output method and the problem of easy video blur.
[0004] In a first aspect, the utility model provides a video signal branch output circuit, the video signal branch output circuit includes signal branch module and decoding module, the input of signal branch module is connected with the control module of vehicle control system, is used for receiving the composite video signal of control module output, and according to the independent video signal of composite video signal output, the decoding module includes multiple decoding units, and the input of each decoding unit is connected with the output of signal branch module, is used for converting the independent video signal into output signal, and the output of each decoding unit is connected with the display unit of vehicle control system, is used for the output signal is output to display unit.
[0005] Further, the signal branch module includes a branch chip, and the branch chip is connected with the control module and each decoding unit.
[0006] Further, the branch chip includes an input interface and multiple output interfaces, the input interface is connected with the control module, and the output interface is connected with the decoding unit.
[0007] Further, the multiple output interfaces include a first output interface, a second output interface and a third output interface, and the first output interface, the second output interface and the third output interface are all used to be connected with the decoding unit.
[0008] Further, the multiple decoding units include a first decoding unit, a second decoding unit and a third decoding unit, the first decoding unit is connected with the first output interface, the second decoding unit is connected with the second output interface, and the third decoding unit is connected with the third output interface.
[0009] Further, one of the decoding units is connected with one of the display units.
[0010] Further, the composite video signal is a DP signal.
[0011] Further, the output signal is an LVDS signal.
[0012] Further, a power supply module is further included, and the power supply module is connected with the signal branching module.
[0013] In the second aspect, the utility model further provides a vehicle-mounted control system, it includes display unit and the video signal branching output circuit of any one of the above.
[0014] The vehicle-mounted control system provided by the utility model includes a display unit and a video signal branching output circuit, the video signal branching output circuit includes a signal branching module and a decoding module, the signal branching module is connected with a control module, and is used for receiving a composite video signal, the decoding module includes a plurality of decoding units, each decoding unit is connected with the signal branching module, and is used for converting the composite video signal into an output signal, meanwhile, each decoding unit is also connected with the display unit, and is used for outputting the output signal to the display unit, so that multi-screen output is realized, meanwhile, the transmission bandwidth can be improved, and video blurring is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.
[0016] Figure 1 The block schematic diagram of the video signal branching output circuit provided by the first embodiment of the utility model is shown in the figure.
[0017] Figure 2 The block schematic diagram of the video signal branching output circuit provided by the second embodiment of the utility model is shown in the figure.
[0018] Figure 3 The block schematic diagram of the video signal branching output circuit provided by the third embodiment of the utility model is shown in the figure. DETAILED DESCRIPTION
[0019] The technical solutions in the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the utility model.
[0020] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.
[0021] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should be further understood that the term "and / or" as used in the utility model specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.
[0022] Referring to Figures 1 to 3 , Figure 1 The block schematic diagram of the video signal branching output circuit 100 provided by the first embodiment of the utility model is shown in the figure; Figure 2 The block schematic diagram of the video signal branching output circuit 100 provided by the second embodiment of the utility model is shown in the figure; Figure 3 The block schematic diagram of the video signal branching output circuit 100 provided by the third embodiment of the utility model is shown in the figure. Figure 1 As shown in the figure, the video signal branching output circuit 100 provided by the utility model comprises a signal branching module 10 and a decoding module 20; the input end of the signal branching module 10 is connected with the control module 200 of the vehicle-mounted control system, used for receiving the composite video signal output by the control module 200, and outputting independent video signals according to the composite video signal; the decoding module 20 comprises a plurality of decoding units 21, the input end of each decoding unit 21 is connected with the output end of the signal branching module 10, used for converting the independent video signals into output signals, and the output end of each decoding unit 21 is connected with the display unit 300 of the vehicle-mounted control system, used for outputting the output signals to the display unit 300.
[0023] Specifically, the vehicle-mounted control system can include a display unit 300 and a video signal splitting output circuit 100, the number of the display unit 300 can be multiple, for example, can include three display units 300, the number of the display unit 300 is related to the type of the vehicle, and the specific number is not limited here.
[0024] The video signal splitting output circuit 100 can include a signal splitting module 10 and a decoding module 20, the input end of the signal splitting module 10 is connected with the control module 200, for receiving the composite video signal output by the control module 200. The composite video signal can be composed of multiple video signals, that is, one composite video can include multiple videos. The control module 200 outputs the composite video signal to the signal splitting module 10, the signal splitting module 10 converts the composite video signal into multiple independent video signals, the number of the independent video signals is related to the number of the decoding units 21 included in the decoding module 20, and then sends the independent video signals to the decoding units 21.
[0025] The decoding module 20 can include multiple decoding units 21, the input end of each decoding unit 21 is connected with the output end of the signal splitting module 10, for obtaining the independent video signal output by the signal splitting module 10, and then converting the independent video signal into an output signal and outputting the output signal to the display unit 300, so that one video signal can be converted into multiple output signals, that is, one composite video signal can be converted into multiple video signals.
[0026] As a further embodiment, the signal splitting module 10 includes a splitting chip 11, the splitting chip 11 is connected with the control module 200 and each decoding unit 21 respectively.
[0027] Among them, the signal splitting module 10 can include a splitting chip 11, the splitting chip 11 is connected with the control module 200 and each decoding unit 21 respectively, that is, the input end of the splitting chip 11 is connected with the output end of the control module 200, and the output end of the splitting chip 11 is connected with the input end of each decoding unit 21, for converting the composite video signal into an independent video signal and outputting. For example, the composite video signal can be a DP signal, and the independent video signal can also be a DP signal, then the splitting chip 11 can convert one composite DP signal into multiple independent DP signals and output to different decoding units 21 to realize multi-screen output.
[0028] As a further embodiment, the signal splitting chip 11 comprises an input interface and a plurality of output interfaces, the input interface is connected with the control module 200, and the output interfaces are connected with the decoding units 21. Further, the plurality of output interfaces comprises a first output interface, a second output interface and a third output interface, and the first output interface, the second output interface and the third output interface are all used to be connected with the decoding units 21. Further, the plurality of decoding units 21 comprises a first decoding unit, a second decoding unit and a third decoding unit, the first decoding unit is connected with the first output interface, the second decoding unit is connected with the second output interface, and the third decoding unit is connected with the third output interface. Further, one of the decoding units 21 is used to be connected with one of the display units 300. Further, the composite video signal is a DP signal. Further, the output signal is an LVDS signal.
[0029] The signal splitting chip 11 can comprise a first output interface, a second output interface and a third output interface, each of the output interfaces comprises a plurality of pins, and a connection circuit can also be provided, which is used to connect the connection interface of the signal splitting chip 11 and the decoding units 21. For example, the first output interface is connected with the decoding units 21 through the connection circuit, and the connection circuit can comprise capacitors, resistors and other devices, which are used to protect the signal splitting chip 11 and filter out interference.
[0030] The plurality of decoding units 21 can comprise a first decoding unit, a second decoding unit and a third decoding unit, the first decoding unit is connected with the first output interface, the second decoding unit is connected with the second output interface, and the third decoding unit is connected with the third output interface. The composite video signal can be a DP signal, and the independent video signal can also be a DP signal. The output signal can be an LVDS signal. The signal splitting chip 11 converts one DP signal into three DP signals, and outputs the three DP signals to the first decoding unit, the second decoding unit and the third decoding unit respectively. The first decoding unit, the second decoding unit and the third decoding unit convert the respective corresponding DP signals into LVDS signals and output the LVDS signals to the corresponding display units 300 respectively, so as to realize three-screen output.
[0031] As a further embodiment, a power supply module is further included, and the power supply module is connected with the signal splitting module 10.
[0032] The power supply module is connected with the signal splitting module 10, and is used to supply power for the signal splitting module 10.
[0033] The utility model still provides a vehicle control system, the vehicle control system includes display unit 300 and any one of above embodiment's video signal branching output circuit 100, video signal branching output circuit 100 includes signal branching module 10 and decoding module 20, the input of signal branching module 10 is connected with the control module 200 of vehicle control system, is used for receiving the composite video signal of control module 200 output, and according to independent video signal output of composite video signal, decoding module 20 includes a plurality of decoding units 21, and the input of each decoding unit 21 is connected with the output of signal branching module 10, is used for converting independent video signal into output signal, and the output of each decoding unit 21 is connected with the display unit 300 of vehicle control system, is used for outputting output signal to display unit 300.
[0034] Specifically, the vehicle control system can include a display unit 300 and a video signal branching output circuit 100. The number of display units 300 can be multiple, for example, three display units 300. The number of display units 300 is related to the type of vehicle, and the specific number is not limited here.
[0035] The video signal branching output circuit 100 can include a signal branching module 10 and a decoding module 20. The input of the signal branching module 10 is connected with the control module 200, for receiving the composite video signal output by the control module 200. The composite video signal can be composed of multiple video signals, that is, one composite video can include multiple videos. The control module 200 outputs the composite video signal to the signal branching module 10, which converts the composite video signal into multiple independent video signals. The number of independent video signals is related to the number of decoding units 21 included in the decoding module 20, and then sends the independent video signals to the decoding units 21.
[0036] The decoding module 20 can include multiple decoding units 21. The input of each decoding unit 21 is connected with the output of the signal branching module 10, for obtaining the independent video signal output by the signal branching module 10, and then converting the independent video signal into an output signal and outputting it to the display unit 300. Thus, one video signal can be converted into multiple output signals, that is, one composite video signal can be converted into multiple video signals.
[0037] The utility model discloses a video signal branch output circuit, signal branch module is connected with control module, is used for receiving composite video signal, and decoding module includes a plurality of decoding units, and each decoding unit is connected with signal branch module, is used for converting composite video signal into output signal, and simultaneously, each decoding unit is connected with display unit also, is used for outputting output signal to display unit to realize multi -screen output, and simultaneously, can improve transmission bandwidth also, avoids that video appears fuzzy.
[0038] The above merely illustrates the utility model, but the protection scope of the utility model is not limited to this, and anyone skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.
Claims
1. A video signal distribution output circuit, characterized by comprising: The application is applied to a vehicle control system, and the video signal branching output circuit comprises: a signal branching module, an input end of the signal branching module being connected with a control module of the vehicle control system, for receiving a composite video signal output by the control module and outputting independent video signals according to the composite video signal; a decoding module, the decoding module comprising a plurality of decoding units, an input end of each decoding unit being connected with an output end of the signal branching module, for converting the independent video signals into output signals, and an output end of each decoding unit being connected with a display unit of the vehicle control system, for outputting the output signals to the display unit.
2. The video signal splitting and outputting circuit according to claim 1, wherein The signal branching module comprises a branching chip, the branching chip being connected with the control module and each decoding unit.
3. The video signal splitting and outputting circuit according to claim 2, wherein The branching chip comprises an input interface and a plurality of output interfaces, the input interface being connected with the control module, and the output interfaces being connected with the decoding units.
4. The video signal splitting and outputting circuit according to claim 3, wherein The plurality of output interfaces comprise a first output interface, a second output interface and a third output interface. The first output interface, the second output interface and the third output interface are all used for being connected with the decoding units.
5. The video signal splitting and outputting circuit according to claim 4, wherein The plurality of decoding units comprise a first decoding unit, a second decoding unit and a third decoding unit. The first decoding unit is connected with the first output interface, the second decoding unit is connected with the second output interface, and the third decoding unit is connected with the third output interface.
6. The video signal splitting and outputting circuit according to claim 1, wherein One decoding unit is used for being connected with one display unit.
7. The video signal splitting and outputting circuit according to claim 1, wherein The composite video signal is a DP signal.
8. The video signal splitting and outputting circuit according to claim 1, wherein The output signal is an LVDS signal.
9. The video signal splitting and outputting circuit according to claim 1, wherein A power supply module is further comprised, the power supply module being connected with the signal branching module.
10. An in-vehicle control system characterized by comprising: The vehicle control system comprises a display unit and the video signal branching output circuit as claimed in any one of claims 1-9.