CN109189423A - Vehicle-carrying display screen upgrade method, storage medium, equipment and in-vehicle multi-media system - Google Patents
Vehicle-carrying display screen upgrade method, storage medium, equipment and in-vehicle multi-media system Download PDFInfo
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- CN109189423A CN109189423A CN201810956503.4A CN201810956503A CN109189423A CN 109189423 A CN109189423 A CN 109189423A CN 201810956503 A CN201810956503 A CN 201810956503A CN 109189423 A CN109189423 A CN 109189423A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
Abstract
This disclosure relates to a kind of vehicle-carrying display screen upgrade method, storage medium, equipment and in-vehicle multi-media system, the in-vehicle multi-media system includes: multimedia host and vehicle-carrying display screen, the vehicle-carrying display screen includes one or more display screen CPU, the multimedia host is connect by internal integrated circuit I2C bus with the vehicle-carrying display screen, the multimedia host, for obtaining display screen upgrade procedure from external storage equipment or remote server；Agreement is sent based on preset data, and the display screen upgrade procedure is sent to the vehicle-carrying display screen by the I2C bus with series form；The vehicle-carrying display screen upgrades display screen CPU for the display screen upgrade procedure of parallel fo to be loaded onto display screen CPU by the I2C bus.The step of directly vehicle-carrying display screen capable of being upgraded by the upgrade procedure got in external storage facilities or remote server, avoiding hardware dismounting when to vehicle-carrying display screen upgrading, upgrading efficiency is improved, hardware damage is avoided.
Description
Technical field
This disclosure relates to vehicle mounted multimedia design field, and in particular, to a kind of vehicle-carrying display screen upgrade method, storage are situated between
Matter, equipment and in-vehicle multi-media system.
Background technique
In-vehicle multi-media system is mainly by multimedia host and vehicle-carrying display screen at it is logical to provide information for driver and passenger
The information services such as news, information consultation, vehicle diagnostics, navigation and audio-visual amusement.For optimization system function, adapt to continue to develop
User demand, usually need at regular intervals to the display screen system in the main system and vehicle-carrying display screen in multimedia host
System is upgraded.In the related technology, the system upgrade of vehicle-carrying display screen is generally required and dismantles vehicle central control system, make to shield
The interface in portion behind the scenes is exposed, then connects relevant device by technical staff and carry out system upgrade.The operation itself is very time-consuming
Effort, and continually dismounting hardware can influence the tightness degree of each components in control in vehicle to a certain extent, break ring
Original harness construction, in turn results in the abrasion of harness, increases the hidden danger of console hardware damage.
Summary of the invention
To overcome the problems in correlation technique, purpose of this disclosure is to provide a kind of vehicle-carrying display screen upgrade method,
Storage medium, equipment and in-vehicle multi-media system.
To achieve the goals above, according to the first aspect of the embodiments of the present disclosure, a kind of in-vehicle multi-media system, institute are provided
Stating in-vehicle multi-media system includes: multimedia host and vehicle-carrying display screen, and the vehicle-carrying display screen includes one or more displays
Shield CPU, the multimedia host is connect by internal integrated circuit I2C bus with the vehicle-carrying display screen, wherein
The multimedia host, it is described for obtaining display screen upgrade procedure from external storage equipment or remote server
Display screen upgrade procedure is for upgrading one or more of display screen CPU；
Agreement is sent based on preset data to send out the display screen upgrade procedure by the I2C bus with series form
It send to the vehicle-carrying display screen；
The vehicle-carrying display screen, for after unstringing the display screen upgrade procedure of the series form for parallel fo,
The display screen upgrade procedure of the parallel fo is loaded onto one or more of display screens by the I2C bus
CPU, so that one or more of display screen CPU are upgraded according to the display screen upgrade procedure.
Optionally, the multimedia host includes serializer, and the vehicle-carrying display screen further includes deserializer, the serializer
It is connect by the I2C bus with the deserializer, wherein
The serializer upgrades the display screen of the parallel fo received for sending agreement based on the data
Program is converted into the series form, and it includes each byte institute when transmitting data with the series form that the data, which send agreement,
The operational order and/or data content of instruction；
The display screen upgrade procedure is sent to the deserializer by the I2C bus with the series form；
The deserializer, for unstringing the display screen upgrade procedure of the series form for parallel fo；
According to the escalation target information of the display screen upgrade procedure, the display screen of the parallel fo is upgraded into journey
Upgrading data in sequence are loaded onto one or more of display screen CPU by the I2C bus, so that one or more
A display screen CPU is upgraded according to the display screen upgrade procedure.
Optionally, the multimedia host further includes host CPU, and the host CPU passes through the I2C bus and the string
The connection of row device, is used for:
By screen upgrade service program, the display screen upgrade procedure from the external storage facilities is read；
By the screen upgrade service program, the display screen upgrade procedure read is sent by the I2C bus
To the serializer；Alternatively,
The system upgrade program from the remote server is obtained, the system upgrade program includes for described more
The host upgrade procedure and the display screen upgrade procedure that media host is upgraded；
By the screen upgrade service program, the display screen upgrade procedure extracted is read；
By the screen upgrade service program, the display screen upgrade procedure read is passed through into the I2C bus
It is sent to the serializer.
Optionally, the host CPU, is used for:
The system upgrade program is verified based on default checking algorithm；
After the system upgrade program is by verification, the host upgrading journey is extracted from the system upgrade program
Sequence, to upgrade to the multimedia host；
The display screen upgrade procedure is extracted from the system upgrade program.
Optionally, any display screen CPU in one or more of display screen CPU, for aobvious according to what is received
When display screen upgrade procedure is upgraded, agreement is sent based on preset data and leads to the upgrading progress msg of the display screen CPU
I2C bus feedback is crossed to the host CPU, the data receiver agreement includes receiving the display screen with the series form
Operational order and/or data content indicated by each byte when the data of CPU feedback.
Optionally, the vehicle-carrying display screen further includes image processor, and the host CPU passes through Low Voltage Differential Signal LVDS
Route is successively connect with the serializer, the deserializer and described image processor, and the host CPU is also used to:
First image control information is sent to described image processor by the LVDS route, described vehicle-mounted aobvious
The upgrading progress msg is exported in display screen；
When determining that the display screen CPU upgrading starts according to the upgrading progress received, by the second image control
Information is sent to described image processor by the LVDS route, with stop the vehicle-carrying display screen except the upgrading progress
Image outside information is shown and image operation；
When determining that the display screen CPU upgrading is completed according to the upgrading progress msg received, by third image
It controls information and described image processor is sent to by the LVDS route, to restart the figure of the vehicle-carrying display screen
As display and described image operation.
According to the second aspect of an embodiment of the present disclosure, a kind of upgrade method of vehicle-carrying display screen is provided, is applied to vehicle-mounted more
Media system, the in-vehicle multi-media system include: multimedia host and vehicle-carrying display screen, and the vehicle-carrying display screen includes one
Or multiple display screen CPU, the multimedia host are connect by internal integrated circuit I2C bus with the vehicle-carrying display screen, institute
The method of stating includes:
Display screen upgrade procedure is obtained from external storage equipment or remote server by the multimedia host, it is described aobvious
Display screen upgrade procedure is for upgrading one or more of display screen CPU；
Preset data, which are based on, by the multimedia host sends agreement for the display screen upgrade procedure with serial shape
Formula is sent to the vehicle-carrying display screen by the I2C bus；
The display screen upgrade procedure of the series form is unstringed as after parallel fo by the vehicle-carrying display screen,
The display screen upgrade procedure of the parallel fo is loaded onto one or more of display screens by the I2C bus
CPU, so that one or more of display screen CPU are upgraded according to the display screen upgrade procedure.
Optionally, the multimedia host includes serializer, and the vehicle-carrying display screen further includes deserializer, the serializer
It is connect by the I2C bus with the deserializer, it is described that preset data transmission agreement is based on by the multimedia host
The display screen upgrade procedure is sent to the vehicle-carrying display screen by the I2C bus with series form, comprising:
Agreement is sent based on the data by the display screen of the parallel fo received by the serializer
Upgrade procedure is converted into the series form, and it includes each word when transmitting data with the series form that the data, which send agreement,
Section indicated operational order and/or data content；
The display screen upgrade procedure of the series form is sent to by the I2C bus by the serializer
The deserializer.
Optionally, the described display screen upgrade procedure of the series form is unstringed by the vehicle-carrying display screen is parallel
After form, the display screen upgrade procedure of the parallel fo is loaded onto one or more of display screen CPU, so that described
One or more display screen CPU are upgraded according to the display screen upgrade procedure, comprising:
The display screen upgrade procedure of the series form is unstringed as the parallel fo by the deserializer；
By the deserializer according to the escalation target information in the display screen upgrade procedure, by the parallel fo
Upgrading data in the display screen upgrade procedure are loaded onto one or more of display screen CPU by the I2C bus, with
So that one or more of display screen CPU are upgraded according to the display screen upgrade procedure.
Optionally, the multimedia host further includes host CPU, and the host CPU passes through the I2C bus and the string
The connection of row device, it is described that display screen upgrade procedure is obtained by the multimedia host, comprising:
By the host CPU by screen upgrade service program, the display from the external storage facilities is read
Shield upgrade procedure；
By the host CPU by the screen upgrade service program, the display screen upgrade procedure read is passed through into institute
It states I2C bus and is sent to the serializer；Alternatively,
System upgrade program from the remote server, the system upgrade program bag are obtained by the host CPU
Include the host upgrade procedure and the display screen upgrade procedure for being upgraded to the multimedia host；
By the host CPU by the screen upgrade service program, the display screen upgrade procedure extracted is read；
By the host CPU by the screen upgrade service program, the display screen upgrade procedure read is passed through into institute
It states I2C bus and is sent to the serializer.
Optionally, it is described by the host CPU by the screen upgrade service program, read the display extracted
Shield upgrade procedure, comprising:
Default checking algorithm is based on by the host CPU to verify the system upgrade program；
After the system upgrade program is by verification, extracted from the system upgrade program by the host CPU
The host upgrade procedure, to upgrade to the multimedia host；
The display screen upgrade procedure is extracted from the system upgrade program by the host CPU.
Optionally, the method also includes:
Agreement is received based on the data, and the upgrading progress msg of each display screen CPU is passed through into I2C bus feedback
To the host CPU, the data receiver agreement includes when receiving the data of the display screen CPU feedback with the series form
Operational order indicated by each byte and/or data content.
Optionally, the vehicle-carrying display screen further includes image processor, and the host CPU passes through Low Voltage Differential Signal LVDS
Route successively with the serializer, the deserializer and described image processor, the method also includes:
The first image control information is sent to described image processor by the LVDS route by host CPU, with
The upgrading progress msg is exported on the vehicle-carrying display screen；
When determining that the display screen CPU upgrading starts according to the upgrading progress that receives, by host CPU by the
Two image control informations are sent to described image processor by the LVDS route, with stop the vehicle-carrying display screen except institute
The image outside upgrading progress msg is stated to show and image operation；
When determining that the display screen CPU upgrading is completed according to the upgrading progress msg received, pass through host CPU
Third image control information is sent to described image processor by the LVDS route, to restart the car-mounted display
The described image of screen is shown and described image operation.
According to the third aspect of an embodiment of the present disclosure, a kind of computer readable storage medium is provided, calculating is stored thereon with
Machine program realizes the liter for the vehicle-carrying display screen that embodiment of the present disclosure second aspect provides when the computer program is executed by processor
The step of grade method.
According to a fourth aspect of embodiments of the present disclosure, a kind of electronic equipment is provided, comprising:
Memory is stored thereon with computer program；
Processor, for executing the computer program in the memory, to realize embodiment of the present disclosure second party
The step of upgrade method for the vehicle-carrying display screen that face provides.
Through the above technical solutions, the disclosure can be by the multimedia host from external storage equipment or remote server
Display screen upgrade procedure is obtained, the display screen upgrade procedure is for upgrading one or more display screen CPU；By this
Multimedia host is based on preset data transmission agreement and the display screen upgrade procedure is passed through I2C bus transmission with series form
To the vehicle-carrying display screen；The display screen upgrade procedure of the series form is unstringed as parallel fo by the vehicle-carrying display screen
Afterwards, the display screen upgrade procedure of the parallel fo is loaded onto one or more display screen CPU by the I2C bus, with
So that the one or more display screen CPU is upgraded according to the display screen upgrade procedure.Can by external storage facilities or
The upgrade procedure got in remote server directly upgrades vehicle-carrying display screen, when avoiding to vehicle-carrying display screen upgrading
The step of hardware dismounts, improves upgrading efficiency, avoids hardware damage.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of in-vehicle multi-media system shown according to an exemplary embodiment；
Fig. 2 is the schematic diagram for implementing another in-vehicle multi-media system exemplified according to Fig. 1；
Fig. 3 is the schematic diagram for implementing another in-vehicle multi-media system exemplified according to Fig.2,；
Fig. 4 is a kind of flow chart of the upgrade method of vehicle-carrying display screen shown according to an exemplary embodiment；
Fig. 5 is the flow chart for implementing a kind of upgrade procedure sending method exemplified according to Fig.4,；
Fig. 6 is the flow chart for implementing a kind of upgrade procedure loading method exemplified according to Fig.4,；
Fig. 7 is the flow chart for implementing the upgrade method of another vehicle-carrying display screen exemplified according to Fig.4,；
Fig. 8 is the flow chart for implementing the upgrade method of another vehicle-carrying display screen exemplified according to Fig.4,；
Fig. 9 is the block diagram of a kind of electronic equipment shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
Fig. 1 is a kind of schematic diagram of in-vehicle multi-media system shown according to an exemplary embodiment, as shown in Figure 1, should
In-vehicle multi-media system 100 includes: multimedia host 110 and vehicle-carrying display screen 120, the vehicle-carrying display screen 120 include one or
Multiple display screen CPU121,122.
Illustratively, which can be the CPU for controlling the vehicle-carrying display screen 120 power supply, while can also be to this
CPU122 carries out control and data transmitting, which can be the CPU for detecting touch-control coordinate.It should be noted that should
Vehicle-carrying display screen 120 may include multiple display screen CPU for having different function, these display screens CPU can with series connection or
Mode in parallel is connect with the multimedia host 110, includes to be serially connected with the vehicle-carrying display screen 120 in the present embodiment
For two display screen CPU121,122, which is illustrated.
In addition, the multimedia host 110 is total by I2C (Inter-Integrated Circuit, internal integrated circuit)
Line 130 is connect with the vehicle-carrying display screen 120, wherein
The multimedia host 110, for obtaining display screen upgrade procedure from external storage equipment or remote server, this is aobvious
Display screen upgrade procedure is for upgrading one or more display screen CPU121,122；Also, it is sent out based on preset data
Send agreement that the display screen upgrade procedure is sent to the vehicle-carrying display screen 120 by the I2C bus 130 with series form.
Illustratively, which can store for USB (Universal Serial Bus, universal serial bus)
Equipment, the remote server can be the clothes of application long-range OTA (Over-the-Air Technology, over the air)
Business device.The 12C bus is a kind of bidirectional two-line synchronous serial bus, include a data wire and a clock line both threads,
Can be with the transmission data of series form, and the display screen upgrade procedure got is in parallel form in the multimedia host
It stores and transmits in 110.Therefore, which is being sent to the car-mounted display from the multimedia host 110
Before screen 120, need to convert the display screen upgrade procedure of parallel fo to one group of data that the data send protocol definition
String (the display screen upgrade procedure of i.e. above-mentioned series form) is transmitted.The serial data is by being the more of unit with Byte (byte)
A data segment composition.It includes operational order indicated by each Byte when transmitting data with the series form that the data, which send agreement,
And/or data content.Agreement is sent according to the data, in the serial data in the corresponding operational order of each Byte and/or data
Hold as shown in following table 1:
Table 1
It is understood that as shown in the Table 1, which contains escalation target IC and (is used to indicate and shows to which
Screen CPU upgraded), command id (for control and monitor display screen upgrading progress) and display screen upgrading needed for number
According to content.Each Byte in the serial data is successively transmitted in the I2C bus 130 with series form, as display screen CPU
When receiving Byte0, it can determine that the instruction is the triggering command of upgrade function according to instruction ID therein；As display screen CPU
When receiving Byte2, determines and determine that the display screen CPU upgraded is display screen according to escalation target IC therein
CPU121 and display screen CPU122.
The vehicle-carrying display screen 120, for inciting somebody to action after unstringing the display screen upgrade procedure of the series form for parallel fo
The display screen upgrade procedure of the parallel fo by the I2C bus 130 be loaded onto one or more display screen CPU121,
122, so that one or more display screen CPU121,122 being upgraded according to the display screen upgrade procedure.
Illustratively, it when the vehicle-carrying display screen 120 receives the display screen upgrade procedure of the series form, needs the string
The display screen upgrade procedure of row form is converted to parallel fo again, further according to the escalation target in the display screen upgrade procedure
IC by the upgrading data content assignment in the display screen upgrade procedure and is loaded onto one or more display screen CPU121,122
In corresponding display screen CPU.Hereafter, then by each display screen CPU according to respective upgrading data content to itself system
Upgraded.
In conclusion the in-vehicle multi-media system that the disclosure provides, comprising: multimedia host and vehicle-carrying display screen, the vehicle
Carrying display screen includes one or more display screen CPU, and the multimedia host is vehicle-mounted aobvious with this by internal integrated circuit I2C bus
Display screen connection, wherein the multimedia host, for obtaining display screen upgrade procedure from external storage equipment or remote server,
The display screen upgrade procedure is for upgrading one or more display screen CPU；Sending agreement based on preset data will
The display screen upgrade procedure is sent to the vehicle-carrying display screen by the I2C bus with series form；The vehicle-carrying display screen is used for
The display screen upgrade procedure of the series form is unstringed for after parallel fo, the display screen upgrade procedure of the parallel fo is led to
It crosses the I2C bus and is loaded onto one or more display screen CPU, so that the one or more display screen CPU is according to the display
Screen upgrade procedure is upgraded.It can be by the upgrade procedure that is got in external storage facilities or remote server directly to vehicle
The step of carrying display screen to be upgraded, avoiding hardware dismounting when to vehicle-carrying display screen upgrading, improves upgrading efficiency, avoids hard
Part damage.
Fig. 2 is the schematic diagram for implementing another in-vehicle multi-media system exemplified according to Fig. 1, as shown in Fig. 2, should
Multimedia host 110 includes serializer (Serializer) 111, which further includes deserializer
(Deserializer) 123, which is connect by the I2C bus 130 with the deserializer 123.111 side of serializer
I2C bus protocol be mastermode (host mode), the I2C bus protocol of 123 side of deserializer be slave mode (from
Machine mode).
The display screen of the parallel fo received is upgraded journey for sending agreement based on the data by the serializer 111
Sequence is converted into the series form, and it includes behaviour indicated by each Byte when transmitting data with the series form which, which sends agreement,
Make instruction and/or data content；Also, the display screen upgrade procedure is sent to the series form by the I2C bus 130
The deserializer 123.
It illustratively, can be by writing in advance before by the serializer 111 to display screen upgrade procedure conversion
Inner nuclear layer is written by application layer in the display screen upgrade procedure by screen upgrade service program, and realization is total with I2C in inner nuclear layer
Data interaction between line.Specifically, setting screen upgrades in multimedia host system (this is sentenced for android system)
The entrance API (Application Programming Interface, application programming interface) of service routine.The screen
Upgrade service program passes through entrance API access system.Later, screen upgrade service routine call neu_openapi is (predetermined
The sets of interfaces of justice) the data interaction interface (including setdata/callbackdata interface etc.) that provides is different hard to be adapted to
Part coding/decoding serial core piece.The application architecture layer provided again by screen upgrade service routine call neu_openapi
(ApplicationFramework) interface and HAL layers (Hardware Abstraction Layer, hardware abstraction layer) connect
Mouthful, inner nuclear layer gradually is written by application layer in the display screen upgrade procedure.Wherein, at HAL layers, by the I2C bus to abstract
Form compile into kernel, hereafter, device node is simulated in the I2C bus of the abstract by/dev/I2C-N and is connect
Mouth (i.e. the corresponding node of serializer 111 and interface), and then realize and the display screen upgrade procedure is sent to the serializer 111
The step of, and further, the conversion and transmission of the display screen upgrade procedure are completed in the serializer 111.
The deserializer 123, for unstringing the display screen upgrade procedure of the series form for parallel fo；Hereafter, root
According to the escalation target information of the display screen upgrade procedure, the upgrading data in the display screen upgrade procedure of the parallel fo are led to
It crosses the I2C bus 130 and is loaded onto one or more display screen CPU121,122, so that the one or more display screen
CPU121,122 are upgraded according to the display screen upgrade procedure.
Illustratively, after receiving the display screen upgrade procedure, by the deserializer 123 by the display screen liter of the series form
Grade program is converted to parallel fo again, and further according to the escalation target IC in the display screen upgrade procedure, which is upgraded
Upgrading data content assignment in program is simultaneously loaded onto one or more display screen CPU121, corresponding display screen in 122
CPU.It specifically, should by the deserializer 123 by taking the display screen CPU121 and 122 of series system shown in Fig. 2 connection as an example
Display screen upgrade procedure is loaded onto display screen CPU121, and display screen CPU121 gets the upgrading data content corresponding to it
Afterwards, then by upgrading data content corresponding to the display screen 122 it is transferred to the display screen 122.Hereafter, then by each display screen
CPU upgrades the system of itself according to respective upgrading data content.
In addition, the multimedia host 110 further includes host CPU 112, the host CPU 112 is by the I2C bus 130 and is somebody's turn to do
Serializer 111 connects, and is used for:
By screen upgrade service program, the display screen upgrade procedure from the external storage facilities is read；
By the screen upgrade service program, the display screen upgrade procedure read is sent to by the I2C bus 130
The serializer 111；Alternatively,
The system upgrade program from the remote server is obtained, which includes for multimedia master
The host upgrade procedure and the display screen upgrade procedure that machine 110 is upgraded；
By the screen upgrade service program, the display screen upgrade procedure extracted is read；
By the screen upgrade service program, the display screen upgrade procedure read is sent by the I2C bus 130
To the serializer 111.
Optionally, the host CPU 112, is used for:
The system upgrade program is verified based on default checking algorithm；
After the system upgrade program is by verification, the host upgrade procedure is extracted, from the system upgrade program with right
The multimedia host is upgraded；
The display screen upgrade procedure is extracted from the system upgrade program.
Illustratively, the upgrade procedure got from the external storage facilities is generally just in the display screen of display screen
Upgrade procedure, the display screen upgrade procedure can be routed directly to the serializer 111；And it is got from the remote server
Upgrade procedure generally contain host upgrade procedure and the display screen upgrade procedure simultaneously, also, for the peace of Internet communication
Full reason, by preset checking algorithm, for example, MD5 (Message Digest Algorithm 5, Message Digest 5
Five editions) checking algorithm that combines with SHA1 (Secure Hash Algorithm, Secure Hash Algorithm), it is packaged.Cause
This, after getting the upgrade procedure from the remote server, it is necessary first to by the checking algorithm of MD5 and SHA1 to this
Upgrade procedure is verified；After verification passes through, host upgrade procedure is extracted respectively and display screen upgrade procedure is stored to liter
Grade catalogue；Hereafter, multimedia host system is upgraded by the host upgrade procedure, and in multimedia host system upgrade
After the completion, which is sent to the serializer 111.
Fig. 3 is the schematic diagram for implementing another in-vehicle multi-media system exemplified according to Fig.2, wherein this
Or multiple display screen CPU121, any display screen CPU in 122, for being carried out according to the display screen upgrade procedure received
When upgrading, the upgrading progress msg of display screen CPU is passed through by I2C bus feedback to the master based on preset data receiver agreement
Machine CPU112.
Wherein, which includes each when receiving the data of display screen CPU feedback with the series form
Operational order indicated by Byte and/or data content.The upgrading progress msg is also contained in the data receiver protocol definition
One group of serial data in, according to the data receiver agreement, each Byte is corresponding in the serial data where the upgrading progress msg
Operational order and/or data content are as shown in following table 2:
Table 2
The upgrade status of all display screen CPU in the vehicle-carrying display screen 120, upgrading progress and staging error as a result,
Etc. information can be passed to the host CPU 112, in the host CPU 112 screen upgrade service program real time monitoring on
The upgrading situation of all display screen CPU is stated, and is adjusted correspondingly and handles when the error occurs in upgrading.
As shown in figure 3, the vehicle-carrying display screen 420 further includes image processor 124, which passes through low-voltage differential
Signal LVDS route 140 is successively connect with the serializer 111, the deserializer 123 and the image processor 124, wherein host
By 10 road LVDS connections inside multimedia host 110 between CPU112 and the serializer 111, the serializer 111 with
By 2 road LVDS connections between the deserializer 123, similarly, between the deserializer 123 and the image processor 124
By 10 road LVDS connections inside the vehicle-carrying display screen, the serializer 111 and the deserializer 123 all include FPD-link
(Flat-panel display Link, flat-panel monitor link), the FPD-link be used for collect wide parallel bus and it when
Clock signal, carries out the optimization of payload, additional Serial Control position, and by the level conversion of high-speed serial signals to LVDS line
Road, the host CPU 112, is also used to:
First image control information is sent to the image processor 124 by the LVDS route 140, with vehicle-mounted aobvious at this
The upgrading progress msg is exported in display screen 120；
When determining that display screen CPU122 upgrading starts according to the upgrading progress received, the second image control is believed
Breath is sent to the image processor 124 by the LVDS route 140, with stop the vehicle-carrying display screen 120 except the upgrading progress
Image outside information is shown and image operation；
When determining that display screen CPU122 upgrading is completed according to the upgrading progress msg received, by third image control
Information processed is sent to the image processor 124 by the LVDS route 140, to restart the figure of the vehicle-carrying display screen 120
As display and image operation.
Illustratively, after the upgrading progress msg for receiving display screen CPU feedback, which can will be corresponding
It controls signal (i.e. the first image control information), which is sent to by the LVDS route 140, by the liter
Grade extreme information is shown on the vehicle-carrying display screen 120 in the form of image and number.Meanwhile when determining the vehicle-carrying display screen
When any display screen CPU in 120 starts upgrading, stop image every other other than the upgrading progress msg show with
Image operation, to guarantee going on smoothly for display screen upgrading, and restores the normal function of the vehicle-carrying display screen after the completion of upgrading.
In conclusion the in-vehicle multi-media system that the disclosure provides, comprising: multimedia host and vehicle-carrying display screen, the vehicle
Carrying display screen includes one or more display screen CPU, and the multimedia host is vehicle-mounted aobvious with this by internal integrated circuit I2C bus
Display screen connection, wherein the multimedia host, for obtaining display screen upgrade procedure from external storage equipment or remote server,
The display screen upgrade procedure is for upgrading one or more display screen CPU；Sending agreement based on preset data will
The display screen upgrade procedure is sent to the vehicle-carrying display screen by the I2C bus with series form；The vehicle-carrying display screen is used for
The display screen upgrade procedure of the series form is unstringed for after parallel fo, the display screen upgrade procedure of the parallel fo is led to
It crosses the I2C bus and is loaded onto one or more display screen CPU, so that the one or more display screen CPU is according to the display
Screen upgrade procedure is upgraded.It can be by the upgrade procedure that is got in external storage facilities or remote server directly to vehicle
It carries display screen to be upgraded, and exports upgrading progress in real time on vehicle-carrying display screen, when avoiding to vehicle-carrying display screen upgrading
The step of hardware dismounts improves upgrading efficiency and safety, avoids hardware damage.
Fig. 4 is a kind of flow chart of the upgrade method of vehicle-carrying display screen shown according to an exemplary embodiment, such as Fig. 4 institute
Show, be applied to in-vehicle multi-media system, which includes: multimedia host and vehicle-carrying display screen, this is vehicle-mounted aobvious
Display screen includes one or more display screen CPU, which passes through internal integrated circuit I2C bus and the vehicle-carrying display screen
Connection, this method comprises:
Step 201, display screen upgrade procedure is obtained from external storage equipment or remote server by the multimedia host.
Wherein, the display screen upgrade procedure is for upgrading one or more display screen CPU.
Step 202, preset data are based on by the multimedia host and send agreement for the display screen upgrade procedure to go here and there
Row form is sent to the vehicle-carrying display screen by the I2C bus.
Step 203, the display screen upgrade procedure of the series form is unstringed as parallel fo by the vehicle-carrying display screen
Afterwards, the display screen upgrade procedure of the parallel fo is loaded onto one or more display screen CPU by the I2C bus, with
So that the one or more display screen CPU is upgraded according to the display screen upgrade procedure.
Fig. 5 is the flow chart for implementing a kind of upgrade procedure sending method exemplified according to Fig.4, as shown in figure 5, should
Multimedia host includes serializer, which further includes deserializer, which passes through the I2C bus and the deserializer
Connection, above-mentioned steps 202 may include:
Step 2021, agreement is sent for the display screen of the parallel fo received based on the data by the serializer
Upgrade procedure is converted into the series form.
Wherein, it includes operational order indicated by each byte when sending data with the series form which, which sends agreement,
And/or data content.
Step 2022, the display screen upgrade procedure of the series form is sent by the I2C bus by the serializer
To the deserializer.
Fig. 6 is the flow chart for implementing a kind of upgrade procedure loading method exemplified according to Fig.4, as shown in fig. 6, on
Stating step 203 may include:
Step 2031, the display screen upgrade procedure of the series form is unstringed as the parallel fo by the deserializer.
Step 2032, by the deserializer according to the escalation target information in the display screen upgrade procedure, by the parallel shape
Upgrading data in the display screen upgrade procedure of formula are loaded onto one or more display screen CPU by the I2C bus, so that
The one or more display screen CPU is obtained to be upgraded according to the display screen upgrade procedure.
Fig. 7 is the flow chart for implementing the upgrade method of another vehicle-carrying display screen exemplified according to Fig.4, such as Fig. 7
Shown, which further includes host CPU, which is connect by the I2C bus with the serializer, the step 201
It may include: step 2011 and 2012 or step 2013-2015.
Step 2011, by the host CPU by screen upgrade service program, read from the external storage facilities this is aobvious
Display screen upgrade procedure.
Step 2012, the display screen upgrade procedure read is led to by the screen upgrade service program by the host CPU
It crosses the I2C bus and is sent to the serializer.
Step 2013, the system upgrade program from the remote server is obtained by the host CPU.
Wherein, which includes host upgrade procedure for being upgraded to the multimedia host and should
Display screen upgrade procedure.
Step 2014, by the host CPU by the screen upgrade service program, the display screen upgrading journey extracted is read
Sequence.
Step 2015, the display screen upgrade procedure read is led to by the screen upgrade service program by the host CPU
It crosses the I2C bus and is sent to the serializer.
Optionally, which may include:
Default checking algorithm is based on by the host CPU to verify the system upgrade program；
After the system upgrade program is by verification, which is extracted from the system upgrade program by the host CPU
Upgrade procedure, to upgrade to the multimedia host；
The display screen upgrade procedure is extracted from the system upgrade program by the host CPU.
Fig. 8 is the flow chart for implementing the upgrade method of another vehicle-carrying display screen exemplified according to Fig.4, such as Fig. 8
It is shown, this method further include:
Step 204, the upgrading progress msg of each display screen CPU is passed through by I2C based on preset data receiver agreement
Bus feedback is to the host CPU.
Wherein, which includes each word when receiving the data of display screen CPU feedback with the series form
Section indicated operational order and/or data content.
Illustratively, which further includes image processor, which passes through Low Voltage Differential Signal LVDS route
Successively with the serializer, the deserializer and the image processor, this method further include:
Step 205, the first image control information is sent to by the LVDS route by the image procossing by host CPU
Device, to export the upgrading progress msg on the vehicle-carrying display screen.
Step 206, when determining that display screen CPU upgrading starts according to the upgrading progress received, pass through host CPU
Second image control information is sent to the image processor by the LVDS route, with stop the vehicle-carrying display screen except the liter
Image outside grade progress msg is shown and image operation.
Step 207, when determining that display screen CPU upgrading is completed according to the upgrading progress msg received, pass through master
Third image control information is sent to the image processor by the LVDS route by machine CPU, to restart the car-mounted display
The image of screen is shown and image operation.
In conclusion the vehicle-carrying display screen upgrade method that the disclosure provides, can be deposited by the multimedia host from external
It stores up equipment or remote server obtains display screen upgrade procedure, which is used for the one or more display screen
CPU is upgraded；Preset data, which are based on, by the multimedia host sends agreement for the display screen upgrade procedure with serial shape
Formula is sent to the vehicle-carrying display screen by the I2C bus；The display screen of the series form is upgraded by the vehicle-carrying display screen
Program unstrings that after parallel fo, the display screen upgrade procedure of the parallel fo is loaded onto this by the I2C bus
Or multiple display screen CPU, so that the one or more display screen CPU is upgraded according to the display screen upgrade procedure.It can
Directly vehicle-carrying display screen is upgraded by the upgrade procedure got in external storage facilities or remote server, and in vehicle
The step of carrying and export upgrading progress in real time on display screen, avoiding hardware dismounting when to vehicle-carrying display screen upgrading, improves liter
Stage efficiency and safety, avoid hardware damage.
Fig. 9 is the block diagram of a kind of electronic equipment 900 shown according to an exemplary embodiment.As shown in figure 9, the electronics is set
Standby 900 may include: processor 901, memory 902, multimedia component 903, input/output (I/O) interface 904, Yi Jitong
Believe component 905.
Wherein, processor 901 is used to control the integrated operation of the electronic equipment 900, to complete above-mentioned vehicle-carrying display screen
Upgrade method in all or part of the steps.Memory 902 is for storing various types of data to support to set in the electronics
Standby 900 operation, these data for example may include any application or method for operating on the electronic equipment 900
Instruction and the relevant data of application program, such as contact data, the message of transmitting-receiving, picture, audio, video etc..It should
Memory 902 can be realized by any kind of volatibility or non-volatile memory device or their combination, such as static state
Random access memory (Static Random Access Memory, abbreviation SRAM), electrically erasable programmable read-only memory
(Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM), erasable programmable
Read-only memory (Erasable Programmable Read-Only Memory, abbreviation EPROM), programmable read only memory
(Programmable Read-Only Memory, abbreviation PROM), and read-only memory (Read-Only Memory, referred to as
ROM), magnetic memory, flash memory, disk or CD.Multimedia component 903 may include screen and audio component.Wherein
Screen for example can be touch screen, and audio component is used for output and/or input audio signal.For example, audio component may include
One microphone, microphone is for receiving external audio signal.The received audio signal can be further stored in storage
Device 902 is sent by communication component 905.Audio component further includes at least one loudspeaker, is used for output audio signal.I/O
Interface 904 provides interface between processor 901 and other interface modules, other above-mentioned interface modules can be keyboard, mouse,
Button etc..These buttons can be virtual push button or entity button.Communication component 905 is for the electronic equipment 900 and other
Wired or wireless communication is carried out between equipment.Wireless communication, such as Wi-Fi, bluetooth, near-field communication (Near Field
Communication, abbreviation NFC), 2G, 3G or 4G or they one or more of combination, therefore corresponding communication
Component 905 may include: Wi-Fi module, bluetooth module, NFC module.
In one exemplary embodiment, electronic equipment 900 can be by one or more application specific integrated circuit
(Application Specific Integrated Circuit, abbreviation ASIC), digital signal processor (Digital
Signal Processor, abbreviation DSP), digital signal processing appts (Digital Signal Processing Device,
Abbreviation DSPD), programmable logic device (Programmable Logic Device, abbreviation PLD), field programmable gate array
(Field Programmable Gate Array, abbreviation FPGA), controller, microcontroller, microprocessor or other electronics member
Part is realized, for executing the upgrade method of above-mentioned vehicle-carrying display screen.
In a further exemplary embodiment, a kind of computer readable storage medium including program instruction, example are additionally provided
It such as include the memory 902 of program instruction, above procedure instruction can be executed by the processor 901 of electronic equipment 900 on to complete
The upgrade method for the vehicle-carrying display screen stated.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, those skilled in the art are considering specification and practice
After the disclosure, it is readily apparent that other embodiments of the disclosure, belongs to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.Simultaneously between a variety of different embodiments of the disclosure
Any combination can also be carried out, as long as it, without prejudice to the thought of the disclosure, equally should be considered as disclosure disclosure of that.
The disclosure is not limited to the precision architecture being described above out, and the scope of the present disclosure is only limited by the attached claims
System.
Claims (10)
1. a kind of in-vehicle multi-media system, which is characterized in that the in-vehicle multi-media system includes: that multimedia host is shown with vehicle-mounted
Display screen, the vehicle-carrying display screen include one or more display screen CPU, and the multimedia host passes through internal integrated circuit I2C
Bus is connect with the vehicle-carrying display screen, wherein
The multimedia host, for obtaining display screen upgrade procedure, the display from external storage equipment or remote server
Screen upgrade procedure is for upgrading one or more of display screen CPU；
Agreement is sent based on preset data to be sent to the display screen upgrade procedure by the I2C bus with series form
The vehicle-carrying display screen；
The vehicle-carrying display screen, for after unstringing the display screen upgrade procedure of the series form for parallel fo, by institute
The display screen upgrade procedure for stating parallel fo is loaded onto one or more of display screen CPU by the I2C bus, with
So that one or more of display screen CPU are upgraded according to the display screen upgrade procedure.
2. multimedia system according to claim 1, which is characterized in that the multimedia host includes serializer, described
Vehicle-carrying display screen further includes deserializer, and the serializer is connect by the I2C bus with the deserializer, wherein
The serializer, for sending the display screen upgrade procedure of the agreement by the parallel fo received based on the data
It is converted into the series form, the data are sent when agreement includes with series form transmission data indicated by each byte
Operational order and/or data content；
The display screen upgrade procedure is sent to the deserializer by the I2C bus with the series form；
The deserializer, for unstringing the display screen upgrade procedure of the series form for parallel fo；
It, will be in the display screen upgrade procedure of the parallel fo according to the escalation target information of the display screen upgrade procedure
Upgrading data one or more of display screen CPU are loaded by the I2C bus so that one or more of aobvious
Display screen CPU is upgraded according to the display screen upgrade procedure.
3. multimedia system according to claim 2, which is characterized in that the multimedia host further includes host CPU, institute
It states host CPU and is connect by the I2C bus with the serializer, is used for:
By screen upgrade service program, the display screen upgrade procedure from the external storage facilities is read；
By the screen upgrade service program, the display screen upgrade procedure read is sent to institute by the I2C bus
State serializer；Alternatively,
The system upgrade program from the remote server is obtained, the system upgrade program includes for the multimedia
The host upgrade procedure and the display screen upgrade procedure that host is upgraded；
By the screen upgrade service program, the display screen upgrade procedure extracted is read；
By the screen upgrade service program, the display screen upgrade procedure read is sent by the I2C bus
To the serializer.
4. multimedia system according to claim 3, which is characterized in that the host CPU is used for:
The system upgrade program is verified based on default checking algorithm；
After the system upgrade program is by verification, the host upgrade procedure is extracted from the system upgrade program, with
The multimedia host is upgraded；
The display screen upgrade procedure is extracted from the system upgrade program.
5. multimedia system according to claim 3, which is characterized in that appointing in one or more of display screen CPU
One display screen CPU, for being based on preset data receiver agreement when being upgraded according to the display screen upgrade procedure received
The upgrading progress msg of the display screen CPU is passed through into I2C bus feedback to the host CPU, the data receiver protocol package
Include operational order and/or number indicated by each byte when receiving the data of display screen CPU feedback with the series form
According to content.
6. multimedia system according to claim 5, which is characterized in that the vehicle-carrying display screen further includes image procossing
Device, the host CPU by Low Voltage Differential Signal LVDS route successively with the serializer, the deserializer and described image
Processor connection, the host CPU are also used to:
First image control information is sent to described image processor by the LVDS route, in the vehicle-carrying display screen
The upper output upgrading progress msg；
When determining that the display screen CPU upgrading starts according to the upgrading progress received, by the second image control information
Be sent to described image processor by the LVDS route, with stop the vehicle-carrying display screen except the upgrading progress msg
Outer image is shown and image operation；
When determining that the display screen CPU upgrading is completed according to the upgrading progress msg received, by third image control
Information is sent to described image processor by the LVDS route, aobvious with the described image for restarting the vehicle-carrying display screen
Show and is operated with described image.
7. a kind of upgrade method of vehicle-carrying display screen, which is characterized in that be applied to in-vehicle multi-media system, the vehicle mounted multimedia
System includes: multimedia host and vehicle-carrying display screen, and the vehicle-carrying display screen includes one or more display screen CPU, described more
Media host is connect by internal integrated circuit I2C bus with the vehicle-carrying display screen, which comprises
Display screen upgrade procedure, the display screen are obtained from external storage equipment or remote server by the multimedia host
Upgrade procedure is for upgrading one or more of display screen CPU；
Preset data transmission agreement is based on by the multimedia host to lead to the display screen upgrade procedure with series form
It crosses the I2C bus and is sent to the vehicle-carrying display screen；
The display screen upgrade procedure of the series form is unstringed as after parallel fo by the vehicle-carrying display screen, by institute
The display screen upgrade procedure for stating parallel fo is loaded onto one or more of display screen CPU by the I2C bus, with
So that one or more of display screen CPU are upgraded according to the display screen upgrade procedure.
8. described vehicle-mounted aobvious the method according to the description of claim 7 is characterized in that the multimedia host includes serializer
Display screen further includes deserializer, and the serializer is connect by the I2C bus with the deserializer, described to pass through the multimedia
Host is based on preset data transmission agreement and is sent to the display screen upgrade procedure by the I2C bus with series form
The vehicle-carrying display screen, comprising:
Agreement is sent based on the data by the serializer to upgrade the display screen of the parallel fo received
Program is converted into the series form, and it includes each byte institute when sending data with the series form that the data, which send agreement,
The operational order and/or data content of instruction；
The display screen upgrade procedure of the series form is sent to by the I2C bus by the serializer described
Deserializer.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
The step of method described in claim 7 or 8 is realized when row.
10. a kind of electronic equipment characterized by comprising
Memory is stored thereon with computer program；
Processor, for executing the computer program in the memory, to realize method described in claim 7 or 8
The step of.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810956503.4A CN109189423A (en) | 2018-08-21 | 2018-08-21 | Vehicle-carrying display screen upgrade method, storage medium, equipment and in-vehicle multi-media system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810956503.4A CN109189423A (en) | 2018-08-21 | 2018-08-21 | Vehicle-carrying display screen upgrade method, storage medium, equipment and in-vehicle multi-media system |
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