CN107180205A - A kind of in-vehicle multi-media system and vehicle - Google Patents
A kind of in-vehicle multi-media system and vehicle Download PDFInfo
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- CN107180205A CN107180205A CN201610140497.6A CN201610140497A CN107180205A CN 107180205 A CN107180205 A CN 107180205A CN 201610140497 A CN201610140497 A CN 201610140497A CN 107180205 A CN107180205 A CN 107180205A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/74—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information operating in dual or compartmented mode, i.e. at least one secure mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0264—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for control means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R2011/0294—Apparatus with multi-functionalities, e.g. radio and telephone
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Abstract
The invention discloses a kind of in-vehicle multi-media system and vehicle.In-vehicle multi-media system includes the first system, second system, micro-control unit and gating switch, wherein, the micro-control unit is connected with the first system and the second system respectively, the gating switch is connected with the first system and the second system respectively, the first system has network savvy, and forbids the second system access network.Such scheme, helps to expand the function of vehicle mounted multimedia by the first system, and ensure privacy of user data and the security driven by second system.
Description
Technical field
The present invention relates to automotive field, in particular it relates to a kind of in-vehicle multi-media system and vehicle.
Background technology
It is vehicle-mounted many with growing and car networking technology the gradually popularization of vehicle mounted multimedia screen enlarging
Media are increasingly becoming the important mobile terminal system of user, the closed system of vehicle device of traditional the small screen
System, can not meet the growing entertainment orientation of user and multimedization demand gradually.Based on this, many cars
Carry multimedia all to start to carry networking module, it is allowed to which user installs what user liked according to personal like
APP is applied, and expands the function of vehicle mounted multimedia with this.
The scheme of above-mentioned expansion vehicle mounted multimedia function, while user's request is met, returning malice should
With there is provided opportunity.After malicious application invasion, the private data of car owner may be obtained, it is also possible to
Vehicle mounted multimedia can be controlled to send false command to some parts of vehicle, the safe driving of car owner is influenceed.
The content of the invention
It is an object of the invention to provide a kind of in-vehicle multi-media system and vehicle, privacy of user is helped to ensure that
Data and the security of driving.
The embodiments of the invention provide a kind of in-vehicle multi-media system, including the first system, second system,
Micro-control unit and gating switch, wherein, the micro-control unit respectively with the first system and described
Second system is connected, and the gating switch is connected with the first system and the second system respectively, institute
Stating the first system has network savvy, and forbids the second system access network.
Alternatively, the first system includes first processing units and networking module, and first processing is single
Member is connected with the micro-control unit, the networking module and the gating switch respectively；At described first
Unit is managed, for receiving the first video frequency output instruction that the micro-control unit is sent, and passes through the choosing
Pass is opened up, the video signal transmission that the networking module is exported to vehicle displays carries out video display.
Alternatively, the first system also include the first vehicle device component, the first vehicle device component with it is described
First processing units are connected；The first vehicle device component, for exporting video to the first processing units
Signal.
Alternatively, the first vehicle device component includes mobile memory interface.
Alternatively, the second system includes second processing unit and video signal collective module, described the
Two processing units respectively with the micro-control unit, the video signal collective module and the gating switch
Connection；The second processing unit, refers to for receiving the second video frequency output that the micro-control unit is sent
Order, and by the gating switch, the video signal transmission that the video signal collective module is obtained is extremely
Vehicle displays carry out video display.
Alternatively, the video signal collective module is the camera or panoramic shooting mould on vehicle body
Block.
Alternatively, the second system is connected with the first system；The second system, for receiving
And the audio signal of the first system output is handled, and carry out audio broadcasting.
Alternatively, the first system includes first processing units and networking module, and first processing is single
Member is connected with the networking module and the second system respectively；The first processing units, for receiving
The audio signal of the networking module output, and transmit to the second system.
Alternatively, the first system also include sound identification module, the sound identification module with it is described
First processing units are connected；The sound identification module, the voice signal for recognizing user's input, and
Export to the first processing units.
Alternatively, the first system also include the first vehicle device component, the first vehicle device component with it is described
First processing units are connected；The first vehicle device component, for exporting audio to the first processing units
Signal.
Alternatively, the first vehicle device component includes mobile memory interface.
Alternatively, the second system is included at second processing unit and audio playing module, described second
Reason unit is connected with the audio playing module and the first system respectively；The second processing unit,
For receiving and handling the audio signal of the first system output, and transmit to the audio playing module
Carry out audio broadcasting.
Alternatively, the second system also include the second vehicle device component, the second vehicle device component with it is described
Second processing unit is connected；The second vehicle device component, for exporting audio to the second processing unit
Signal.
Alternatively, the second vehicle device component includes radio receiver module, the radio receiver module and microcontroller
Unit is connected, and by frequency modulation left and right acoustic channels to the second processing unit exports audio signal.
Alternatively, the micro-control unit is connected with the gating switch, and the gating switch receives described
The gating signal that micro-control unit is sent, and according to the gating signal select the first system or second system with
Vehicle displays are connected.
Alternatively, the in-vehicle multi-media system also includes button monitoring modular, the button monitoring modular
It is connected with the micro-control unit；The button monitoring modular, the steering wheel for monitoring user's triggering is pressed
Key signals, and the steering wheel push button signalling is transmitted to the micro-control unit handled.
Alternatively, the micro-control unit is connected with vehicle CAN network, for realizing that described first is
Data interaction between system and the vehicle CAN network, and/or the second system and the vehicle
Data interaction between CAN network.
Alternatively, the second system include second processing unit, the second processing unit with it is described micro-
Control unit is connected, and data interaction is carried out by the micro-control unit and the vehicle CAN network.
Alternatively, the first system include first processing units, the first processing units with it is described micro-
Control unit is connected, and data interaction is carried out by the micro-control unit and the vehicle CAN network.
Alternatively, the in-vehicle multi-media system also include safety chip, the safety chip respectively with institute
State first processing units and micro-control unit connection；The safety chip, at described first
Reason unit, which is exported to the data of the micro-control unit, is decrypted processing, and to the micro-control unit
Export to the data of the first processing units and be encrypted.
Alternatively, the safety chip, is additionally operable to judge the legal of the first processing units output data
Property, and when judging that data are illegal, interrupt data transfer.
The embodiments of the invention provide a kind of vehicle, including above-mentioned in-vehicle multi-media system.
In technical solution of the present invention, in-vehicle multi-media system is divided into two can be with the system of independent operating：
The first system is open for a user, it is allowed to which user loads APP according to personal like, contributes to
Expand the function of vehicle mounted multimedia；Second system is closing for a user, forbids user according to individual
People's hobby loads APP, helps to ensure that privacy of user data and the security driven.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with
Following embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is a kind of structural representation of in-vehicle multi-media system of the present invention；
Fig. 2 is the composition schematic diagram of in-vehicle multi-media system implementation one of the present invention；
Fig. 3 is the alternative structural representation of in-vehicle multi-media system of the present invention；
Fig. 4 is the composition schematic diagram of in-vehicle multi-media system implementation two of the present invention；
Fig. 5 is the in-vehicle multi-media system of the present invention structural representation of another；
Fig. 6 is the structural representation of in-vehicle multi-media system implementation three of the present invention.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In order to improve the security of in-vehicle multi-media system, in-vehicle multi-media system is divided into two by the present invention
System, i.e., using dual system mode of operation.Wherein, the first system user oriented, it is allowed to which user is according to individual
People likes, and installs the APP applications that user likes, and the first system is referred to as open system；
Second system is forbidden accessing internet, or it is to be understood that second system forbids user to be liked according to individual
APP applications are installed well, but can pre-install some securities very high APP when carrying out Default Value should
With the embodiment of the present invention can not be limited this, and the second system is referred to as closed system.Tool
Body, the high vehicle device of some safe classes can be arranged in second system, for example, being related to safety
The camera data of driving, to control of vehicle etc., can be run by second system.
The composition of in-vehicle multi-media system of the present invention is explained with reference to specific example.
Referring to Fig. 1, the structural representation of in-vehicle multi-media system of the present invention is shown.Vehicle mounted multimedia system
System can include：(the English of micro-control unit 10：Microcontroller Unit, referred to as：MCU)、
The first system 20, second system 30 and the (English of gating switch 40：SWITCH).Wherein, micro-control
Unit 10 processed is connected with the first system 20 and second system 30 respectively, and gating switch 40 is respectively with first
System 20 and second system 30 are connected, and the first system 20 has network savvy, and forbids second system
Connect 30 and enter network.
, can be to user based on the in-vehicle multi-media system of the present invention in a kind of possible embodiment
Carry out video display.For example, MCU10 can control the vision signal for exporting the first system 20, throw
It is put on vehicle displays and carries out video display；Or, MCU10 can also be controlled second system 30
The vision signal of output, delivers and carries out video display onto vehicle displays.
As a kind of example, if two systems export vision signal, i.e. two systems and are required to progress simultaneously
Video display, MCU10 may determine that two systems export the priority of vision signal, and control gating
The high vision signal of priority is delivered to vehicle displays and carries out video display by switch 40.The present invention
The MCU10 concrete schemes for controlling two systems to carry out video display can not be limited.
For example, micro-control unit 10 can receive video frequency output request, and to the first system 20 or
Second system 30 sends gating signal, and corresponding to this, gating switch 40 can be received from the first system
20 or the gating signal of second system 30, and the first system 20 or the are selected according to the gating signal
Two system 30 is connected with vehicle displays, carries out video display.
For example, micro-control unit 10 can also be connected with gating switch 40, corresponding to this, micro-
Control unit 10 is received after video frequency output request, can send gating signal to gating switch 40, with
Gating switch 40 is set to select the first system 20 or second system 30 to show with vehicle according to the gating signal
Display screen is connected, and carries out video display.
As a kind of example, video frequency output request can be sent to micro-control unit 10 by the first system 20,
Or, it can also be sent by second system 30 to micro-control unit 10, or, can also be by vehicle-mounted many
Sent outside media system to micro-control unit 10, the present invention can be not specifically limited to this.
As a kind of example, the vehicle displays in the present invention can be common display screen, or touch
Display screen is touched, the present invention can be not specifically limited to this.
Referring to Fig. 2, the composition schematic diagram of in-vehicle multi-media system implementation one of the present invention is shown.Its
In, the first system 20 can include first processing units 2011 and networking module 2012, and the first processing is single
Member 2011 is connected with micro-control unit 10, networking module 2012 and gating switch 40 respectively.At first
Unit 2011 is managed, for receiving the first video frequency output instruction of the transmission of micro-control unit 10, and passes through choosing
Pass 40 is opened up, the video signal transmission that networking module 2012 is exported to vehicle displays carries out video exhibition
Show.
As a kind of example, micro-control unit 10 can be presented as LPC1547, first processing units 2011
Can be presented as Z8500, networking module 2012 can be presented as LTE, WIFI, BT (bluetooth),
At least one in GPS.The present invention is to micro-control unit 10, first processing units 2011 and networking mould
The concrete form of block 2012 can not be limited.
When the first system 20 carries out video display, networking module 2012 can be first passed through and obtain video letter
Number, and export to first processing units 2011；Again will by MCU10 controls first processing units 2011
Vision signal is exported to gating switch 40, and then is delivered and carried out video display onto vehicle displays.
Alternatively, the first system 20 of invention can also include the first vehicle device component 2013, can specifically join
Schematic diagram as shown in Figure 2.First vehicle device component 2013 is connected with first processing units 2011；First car
Thermomechanical components 2013, for exporting vision signal to first processing units 2011.
That is, the vision signal that the first system 20 is exported, can be obtained simultaneously by networking module 2012
Transmit to first processing units 2011；Or, it can also be obtained and be transmitted by the first vehicle device component 2013
To first processing units 2011.As a kind of example, the first vehicle device component 2013 can be presented as movement
Memory interface, such as USB interface, memory card interface.Specifically, when mobile memory interface insertion is outer
When connecing equipment, vision signal can be obtained by external equipment, and transmitted by mobile memory interface to the
One processing unit 2011.For example, can if preserving the video file of download in external equipment
Directly vision signal is read from external equipment, and transmit to first processing units 2011.If external set
It is standby that there is network savvy, then it can network and receive online vision signal, and transmit to first processing units
2011.The present invention by way of obtaining vision signal external equipment to that can be not specifically limited.
Referring to Fig. 2, the composition schematic diagram of in-vehicle multi-media system implementation one of the present invention is shown.Its
In, second system 30 can include second processing unit 3011 and video signal collective module 3012, the
Two processing units 3011 respectively with micro-control unit 10, video signal collective module 3012 and gating switch
40 connections.Second processing unit 3011, the second video frequency output for receiving the transmission of micro-control unit 10
Instruction, and by gating switch 40, the video signal transmission that video signal collective module 3012 is obtained
Video display is carried out to vehicle displays.
As a kind of example, second processing unit 3011 can be presented as IMX6, video signal collective mould
Block 3012 can be presented as camera or panoramic shooting module on vehicle body, such as backup camera,
Front end camera, left front camera, it is right before at least one in camera.The present invention is to second processing list
The concrete form of member 3011 and video signal collective module 3012 can not be limited.
When second system 30 carries out video display, video signal collective module 3012 can be first passed through and obtained
Vision signal is taken, and is exported to second processing unit 3011；Second processing unit is controlled by MCU10 again
3011 export vision signal to gating switch 40, and then deliver onto vehicle displays progress video exhibition
Show.
Schematic diagram shown in Figure 6, by taking panoramic shooting module as an example, what panoramic shooting module was collected regards
Frequency signal can be transmitted by FPD-link to second processing unit；With backup camera and right preceding camera
Exemplified by, the CVBS vision signals that backup camera and right preceding camera are collected are through video format modulus of conversion
Block, which is converted to, to be transmitted after yuv video signal to second processing unit.
In a kind of possible embodiment, based on the present invention in-vehicle multi-media system, can also to
Family carries out audio broadcasting.For example, the first system 20 and second system 30 are respectively provided with audio playing function,
Then the first system 20 can obtain audio signal and carry out audio broadcasting, and second system 30 can also be obtained
Audio signal simultaneously carries out audio broadcasting, therebetween can be with separate.Or, if the first system 20
Vehicle-mounted loudspeaker is not supported, only second system 30 has audio playing function, then using Fig. 3 institutes
Show that in-vehicle multi-media system carries out audio broadcasting.
As shown in figure 3, second system 30 can be connected with the first system 20；Second system 30, is used for
The audio signal of the output of the first system 20 is received and handled, and carries out audio broadcasting.As a kind of example,
IIS (Chinese can be passed through between the first system 20 and second system 30：Integrated audio interface, English：
Integrate Interface of Sound) carry out audio signal transmission.In addition, in Fig. 3 each intermodule company
Relation and each module realization of functions are connect, is referred to introduce at figure 1 above, is no longer gone to live in the household of one's in-laws on getting married herein
State.
Referring to Fig. 4, the composition schematic diagram of in-vehicle multi-media system implementation two of the present invention is shown.Its
In, the first system 20 includes first processing units 2021 and networking module 2022, first processing units
2021 are connected with networking module 2022 and second system 30 respectively.First processing units 2021, are used for
The audio signal that networking module 2022 is exported is received, and is transmitted to second system 30.
As a kind of example, micro-control unit 10 can be presented as LPC1547, first processing units 2021
Can be presented as Z8500, networking module 2022 can be presented as LTE, WIFI, BT (bluetooth),
At least one in GPS.The present invention is to micro-control unit 10, first processing units 2021 and networking mould
The concrete form of block 2022 can not be limited.
When needing to carry out audio broadcasting, networking module 2022 can be first passed through and obtain audio signal, and it is defeated
Go out to first processing units 2021；Audio signal is exported to second by first processing units 2021 again and is
System 30 carries out audio broadcasting.
Alternatively, the audio signal that the first system 20 is exported, can be obtained and be passed by networking module 2022
First processing units 2021 are transported to, or, audio signal can also be obtained by following two modes.
Mode one, the first system 20 of the invention can also include sound identification module 2023, specifically may be used
Schematic diagram shown in Figure 4.Sound identification module 2023 is connected with first processing units 2021；Voice
Identification module 2023, the voice signal for recognizing user's input, and export to first processing units 2011.
As a kind of example, sound identification module 2023 can be presented as voice Mike.
Mode two, the first system 20 of the invention can also include the first vehicle device component 2024, specifically may be used
Schematic diagram shown in Figure 4.First vehicle device component 2024 is connected with first processing units 2021；First
Vehicle device component 2024, for the exports audio signal of first processing units 2021.As a kind of example,
First vehicle device component 2024 can be mobile memory interface, such as USB interface, memory card interface.
On the first vehicle device component 2024 obtain audio signal by way of, be referred to above with respect to
First vehicle device component 2013 obtains the introduction that the mode of vision signal is made, and here is omitted.
Referring to Fig. 4, the composition schematic diagram of in-vehicle multi-media system implementation two of the present invention is shown.Its
In, second system 30 can be included at second processing unit 3021 and audio playing module 3022, second
Reason unit 3021 is connected with audio playing module 3022 and the first system 20 respectively.Second processing unit
3021, for receiving and handling the audio signal of the output of the first system 20, and transmit to audio broadcasting mould
Block 3022 carries out audio broadcasting.
As a kind of example, it can pass through between second processing unit 3021 and audio playing module 3022
IIS carries out audio signal output, and second processing unit 3021 can be presented as IMX6, and audio plays mould
Block 3022 can be presented as power amplifier and loudspeaker.
When needing to carry out audio broadcasting, second processing unit 3021 can be first passed through and receive the first system 20
The audio signal of output, and Shi Jishiyong demand is combined, sound channel processing is carried out to the audio signal and/or mixed
After the audio frequency process such as sound, output to audio playing module 3022 carries out audio broadcasting.
Alternatively, second system 30 of the invention can also include the second vehicle device component 3023, specifically may be used
Schematic diagram shown in Figure 4.Second vehicle device component 3023 is connected with second processing unit 3021；Second
Vehicle device component 3023, for the exports audio signal of second processing unit 3021.
That is, carrying out the audio signal of audio broadcasting, the output of the first system 20 may come from
Audio signal；Or, it can be from the audio signal exported in the second vehicle device component 3023.As
A kind of example, the second vehicle device component 3023 can be radio receiver module, radio receiver module and microcontroller list
Member 10 is connected, and by frequency modulation left and right acoustic channels (for details, reference can be made to FM I/R in Fig. 6) to second processing
The exports audio signal of unit 3021.
In a kind of possible embodiment, based on the present invention in-vehicle multi-media system, can also to
Family carries out button monitoring.Schematic diagram shown in Figure 6, in-vehicle multi-media system can also include button prison
Module 501 is surveyed, button monitoring modular 501 is connected with micro-control unit 10；Button monitoring modular 501,
For monitoring the steering wheel push button signalling of user's triggering, and steering wheel push button signalling is transmitted to microcontroller list
Member 10 is handled.
That is, some function buttons can be set on the steering wheel, user is by operating these functions
Button is accordingly controlled vehicle.For example, can carry out cutting song, switching display picture etc. by button
Deng of the invention that keypress function, button set location, number of keys etc. can be not specifically limited.Entering
When row button is monitored, if monitoring that user triggers the button on steering wheel, button monitoring modular 501
Just the push button signalling can be obtained, and is transmitted to the progress respective handling of micro-control unit 10.
In a kind of possible embodiment, based on the present invention in-vehicle multi-media system, can also with it is whole
Car CAN network carries out data interaction.For example, it is possible to achieve the first system 20 and vehicle CAN network
Between data interaction；Or, the number between second system 30 and vehicle CAN network can also be realized
According to interaction.Structure chart shown in Figure 5, micro-control unit 10 is connected with vehicle CAN network, is used for
Realize the data interaction between the first system 20 and vehicle CAN network, and/or second system 30 with it is whole
Data interaction between car CAN network.The annexation of each intermodule and each module institute are real in Fig. 5
Existing function, is referred to introduce at figure 1 above, here is omitted.
Specifically, the first system 20 can include first processing units, first processing units and microcontroller
Unit 10 is connected, and data interaction is carried out by micro-control unit 10 and vehicle CAN network.
That is, when the first system 20 communicates with vehicle, first processing units can be by interaction number
According to sending to MCU10, by MCU10 by CAN, interaction data is sent to CAN nets
Interdependent node in network.Conversely, the node in CAN network also can be by MCU10, by interaction data
Send to first processing units.
So that vehicle is unlocked as an example, first processing units are obtained after unlock instruction, can be incited somebody to action by MCU10
The instruction is forwarded to CAN, and then is issued to the ECU (Chinese of unblock：Electronic control unit,
English：Electronic Control Unit) it is unlocked processing.Correspondingly, after unlocking successfully, solution
Unblock result can be sent in CAN by the ECU of lock, if MCU10 listens to this message,
The message can be forwarded to first processing units.In this way, being achieved that the first system and the EUC of unblock
Between two-way interactive.
Specifically, when second system 30 communicates with vehicle, second system 30 can include second processing
Unit, second processing unit is connected with micro-control unit 10, passes through micro-control unit 10 and vehicle CAN
Network carries out data interaction.As a kind of example, the data between MCU10 and second processing unit are handed over
UART (Chinese can mutually be used：Universal asynchronous receiving-transmitting transmitter, English：Universal Asynchronous
Receiver/Transmitter) serial communication.
Alternatively, in order to further improve the security of the present invention program, effectively solve malicious application to
The influence that family private data and safe driving are brought, schematic diagram shown in Figure 6, in-vehicle multi-media system
Can also include safety chip 502, safety chip 502 respectively with first processing units and micro-control unit
10 connections；Safety chip 502, for being exported to first processing units to the data of micro-control unit 10
Processing is decrypted, and the data that micro-control unit 10 is exported to first processing units are encrypted
Processing.
That is, in order to prevent malicious application from distorting what is interacted between the first system 20 and MCU10
Therebetween interactive data can be encrypted by data.Specifically, can be to the two interaction
All data be encrypted；Or, the safe class of data can also be pre-set, to peace
The high data of congruent level are encrypted, and the data low to safe class carry out plaintext transmission.For example,
The data that the unblock of interaction is related between the first system 20 and MCU10 can be considered as the high number of safe class
According to.
As a kind of example, between first processing units and safety chip, between safety chip and MCU
SPI (Chinese can be passed through：Serial Peripheral Interface (SPI), English：Serial Peripheral Interface) carry out
Data interaction.
Alternatively, safety chip 502, it may also be used for judge the legitimacy of first processing units output data,
And when judging that data are illegal, interrupt data transfer.
If that is, the data fit preset data bag form and safety of first processing units output
Chip can correctly decrypt the implication that the data are represented, then can determine that the data are legal, can continue to pass
Transport to MCU；Otherwise judge that the data are illegal, interrupt data transfer.Alternatively, judging that data are non-
During method, safety chip can also ask the first processing center to carry out data re-transmission, if the weight of pre-determined number
It is invalid data to pass by passed data judging, then interrupts data transfer.
The present invention can be not specifically limited to data packet format, encryption-decryption algorithm etc..As a kind of example,
Cryptographic algorithm can be SM1, SM2, SM3, DES, AES, RSA etc., and safety chip can be with body
It is now A7103.
To sum up, when there is malicious application invasion, the instruction that remote terminal is sent to the first system 20 is simulated,
Or when distorting the instruction of the first system 20, safety chip 502 can be identified as illegal instruction,
And the transmission illegally instructed is interrupted, it so just can effectively ensure that privacy of user data and the safety of driving
Property.
As a kind of example, based on the in-vehicle multi-media system of the present invention, video display can be both carried out,
Audio broadcasting can be carried out again, can also carry out button monitoring and the data between vehicle CAN network
Interaction.
Alternatively, the structural representation of in-vehicle multi-media system implementation three shown in Figure 6, this hair
MCU in bright realizes that video display, audio are played, button is monitored, data interaction except that can coordinate
At least one of outside, in can also implementing function such as：Control the electricity of the first system and/or second system
Source inputs with output, carries out fault diagnosis to the first system and/or second system.Based on described above,
The present invention also provide it is a kind of include the vehicle of above-mentioned in-vehicle multi-media system, here is omitted.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited
Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment,
In the case of reconcilable, it can be combined by any suitable means, in order to avoid unnecessary
Repeat, the present invention no longer separately illustrates to various possible combinations.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (22)
1. a kind of in-vehicle multi-media system, it is characterised in that including the first system, second system, micro-
Control unit and gating switch, wherein, the micro-control unit respectively with the first system and described
Two system is connected, and the gating switch is connected with the first system and the second system respectively, described
The first system has network savvy, and forbids the second system access network.
2. in-vehicle multi-media system according to claim 1, it is characterised in that described first is
System includes first processing units and networking module, the first processing units respectively with the micro-control unit,
The networking module and gating switch connection；
The first processing units, for receiving the first video frequency output instruction that the micro-control unit is sent,
And by the gating switch, the video signal transmission that the networking module is exported to vehicle displays is entered
Row video display.
3. in-vehicle multi-media system according to claim 2, it is characterised in that described first is
System also includes the first vehicle device component, and the first vehicle device component is connected with the first processing units；
The first vehicle device component, for exporting vision signal to the first processing units.
4. in-vehicle multi-media system according to claim 3, it is characterised in that first car
Thermomechanical components include mobile memory interface.
5. in-vehicle multi-media system according to claim 1, it is characterised in that described second is
System includes second processing unit and video signal collective module, the second processing unit respectively with it is described micro-
Control unit, the video signal collective module and gating switch connection；
The second processing unit, for receiving the second video frequency output instruction that the micro-control unit is sent,
And pass through the gating switch, the video signal transmission that the video signal collective module is obtained to vehicle
Display screen carries out video display.
6. in-vehicle multi-media system according to claim 5, it is characterised in that the video letter
Number acquisition module is the camera or panoramic shooting module on vehicle body.
7. in-vehicle multi-media system according to claim 1, it is characterised in that described second is
System is connected with the first system；
The second system, for receiving and handling the audio signal of the first system output, and is carried out
Audio is played.
8. in-vehicle multi-media system according to claim 7, it is characterised in that described first is
System includes first processing units and networking module, the first processing units respectively with the networking module and
The second system connection；
The first processing units, for receiving the audio signal of networking module output, and transmit to
The second system.
9. in-vehicle multi-media system according to claim 8, it is characterised in that described first is
System also includes sound identification module, and the sound identification module is connected with the first processing units；
The sound identification module, the voice signal for recognizing user's input, and export to described first
Processing unit.
10. in-vehicle multi-media system according to claim 8 or claim 9, it is characterised in that described
One system also includes the first vehicle device component, and the first vehicle device component is connected with the first processing units；
The first vehicle device component, for the first processing units exports audio signal.
11. in-vehicle multi-media system according to claim 10, it is characterised in that described first
Vehicle device component includes mobile memory interface.
12. in-vehicle multi-media system according to claim 7, it is characterised in that described second is
System includes second processing unit and audio playing module, and the second processing unit is broadcast with the audio respectively
Amplification module and the first system connection；
The second processing unit, the audio signal for receiving and handling the first system output, and
Transmit to the audio playing module and carry out audio broadcasting.
13. in-vehicle multi-media system according to claim 12, it is characterised in that described second
System also includes the second vehicle device component, and the second vehicle device component is connected with the second processing unit；
The second vehicle device component, for the second processing unit exports audio signal.
14. in-vehicle multi-media system according to claim 13, it is characterised in that described second
Vehicle device component includes radio receiver module, and the radio receiver module is connected with micro-control unit, and passes through frequency modulation
Left and right acoustic channels are to the second processing unit exports audio signal.
15. in-vehicle multi-media system according to claim 1, it is characterised in that the microcontroller
Unit is connected with the gating switch, and the gating switch receives the gating letter that the micro-control unit is sent
Number, and select the first system or second system to be connected with vehicle displays according to the gating signal.
16. in-vehicle multi-media system according to claim 1, it is characterised in that described vehicle-mounted many
Media system also includes button monitoring modular, and the button monitoring modular is connected with the micro-control unit；
The button monitoring modular, the steering wheel push button signalling for monitoring user's triggering, and by the side
Transmit to the micro-control unit and handled to disk push button signalling.
17. in-vehicle multi-media system according to claim 1, it is characterised in that the microcontroller
Unit is connected with vehicle CAN network, for realize the first system and the vehicle CAN network it
Between data interaction, and/or the data interaction between the second system and the vehicle CAN network.
18. in-vehicle multi-media system according to claim 17, it is characterised in that described second
System includes second processing unit, and the second processing unit is connected with the micro-control unit, passes through institute
State micro-control unit and carry out data interaction with the vehicle CAN network.
19. in-vehicle multi-media system according to claim 17, it is characterised in that described first
System includes first processing units, and the first processing units are connected with the micro-control unit, pass through institute
State micro-control unit and carry out data interaction with the vehicle CAN network.
20. in-vehicle multi-media system according to claim 19, it is characterised in that described vehicle-mounted
Multimedia system also includes safety chip, the safety chip respectively with first processing units and described
Micro-control unit is connected；
The safety chip, for exporting the first processing units to the data of the micro-control unit
Processing is decrypted, and the micro-control unit is exported to the data progress of the first processing units
Encryption.
21. in-vehicle multi-media system according to claim 20, it is characterised in that the safety
Chip, is additionally operable to judge the legitimacy of the first processing units output data, and judging that data are illegal
When, interrupt data transfer.
22. a kind of vehicle, it is characterised in that including the car any one of claim 1 to 21
Carry multimedia system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610140497.6A CN107180205B (en) | 2016-03-11 | 2016-03-11 | Vehicle-mounted multimedia system and vehicle |
| PCT/CN2017/076203 WO2017152863A1 (en) | 2016-03-11 | 2017-03-09 | On-vehicle multimedia system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610140497.6A CN107180205B (en) | 2016-03-11 | 2016-03-11 | Vehicle-mounted multimedia system and vehicle |
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| CN107180205B CN107180205B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610140497.6A Active CN107180205B (en) | 2016-03-11 | 2016-03-11 | Vehicle-mounted multimedia system and vehicle |
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| CN107180205B (en) | 2023-12-12 |
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