CN107920311A - In-vehicle multi-media system source of sound switching device and method - Google Patents
In-vehicle multi-media system source of sound switching device and method Download PDFInfo
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- CN107920311A CN107920311A CN201711164824.2A CN201711164824A CN107920311A CN 107920311 A CN107920311 A CN 107920311A CN 201711164824 A CN201711164824 A CN 201711164824A CN 107920311 A CN107920311 A CN 107920311A
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- sound
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
Abstract
The invention discloses a kind of in-vehicle multi-media system source of sound switching device and method, including：Event-monitoring module, docks received event and is pre-processed；Configuration management module, reads and writes relevant configuration information, and the configuration information includes acquiescence source of sound, the multimedia application that acquiescence starts, external equipment sound source and connects the source of sound for setting and playing before last time shutdown and set；Judging treatmenting module, judges event, according to the tactful and corresponding configuration information of setting, starts multimedia application, and source of sound switching state is notified corresponding application program.The present invention can realize the random switching of various sources of sound, and when installing other multimedia applications in system, can also ensure source of sound switching and the normal function played.
Description
Technical field
The invention belongs to automotive electronic technology, and in particular to a kind of in-vehicle multi-media system source of sound switching device and method.
Background technology
Automobile has become the important component of mankind's daily life, and vehicle intelligent equipment also develops rapidly, vehicle-mounted more matchmakers
System system is occupied by big touch-screen and multi-functional intelligence system, radio and single disc compared to early stage, now
Vehicular amusement apparatus have become multimedia human-computer interaction system truly, including Infotainment, navigation system, car
Carry a series of functions such as phone, auxiliary driving.The one such as collection radio, DVD, USB, bluetooth, AUX-in in terms of multimedia recreation,
In addition to multimedia video file and AM/FM is played, the audio-visual of external equipment can be played in vehicle audio.
Multimedia recreation function as mobile unit is, it is necessary to pass through steering wheel button, central control panel button, touch screen interface
The random switching of various sources of sound is realized Deng various ways；When installing other multimedia applications in system, also can guarantee that
The normal function that source of sound switches and plays.Therefore, it is necessary to develop a kind of in-vehicle multi-media system source of sound switching device and method.
The content of the invention
The object of the present invention is to provide a kind of in-vehicle multi-media system source of sound switching device and method, various sources of sound can be realized
Random switching, and when installing other multimedia applications in system, also can guarantee that source of sound switching and the normal work(played
Energy.
In-vehicle multi-media system source of sound switching device of the present invention, including：
Event-monitoring module, docks received event and is pre-processed；
Configuration management module, reads and writes relevant configuration information, the multimedia that the configuration information includes acquiescence source of sound, acquiescence starts
The source of sound that application program, the connection of external equipment sound source are set and played before last time shutdown is set；
Judging treatmenting module, judges event, according to the tactful and corresponding configuration information of setting, starts multimedia application
Program, and source of sound switching state is notified into corresponding application program.
In-vehicle multi-media system source of sound switching method of the present invention, using vehicle-mounted more matchmakers as claimed in claim 1
System system source of sound switching device, its method comprise the following steps：
A, the event of in-vehicle multi-media system is monitored in real time；
B, judge whether the event that monitors is source of sound processing information, the source of sound processing information represent application program be by using
The source of sound switching that family interface operation performs, if so, then perform the switching of this source of sound, records the source of sound that is currently played and current
Perform the application name of handover operation；If it is not, then enter step C；
C, the type of event is judged, the type of event includes key-press event, equipment state event and system switching machine event；
When the event monitored is key-press event, then different source of sound switchover policy is performed according to different key, according to current
Residing source of sound obtains next source of sound, and carries out source of sound switching；
When the event monitored is equipment state event, the equipment state event includes external sound source equipment and enters and exterior sound
Source device disconnects, if event represents that external sound source equipment enters, and the external sound source equipment can with and be configured as playing immediately,
Then using the external sound source equipment as next source of sound, and source of sound switching is carried out, otherwise, only notify the external sound source equipment to connect
Connect；If event represents that external sound source equipment disconnects, judge whether the external sound source equipment is current source of sound, if so, then reading
Acquiescence source of sound in configuration information carries out source of sound switching as next source of sound, otherwise, only notifies the external sound source equipment to break
Open；
When the event monitored is system switching machine event, the system switching machine event includes system boot and system closedown；
If event represents system boot, the source of sound before last time shutdown is read from configuration information, if not shutting down source information,
The acquiescence source of sound in configuration information is read as initial source of sound, if the source information that shuts down, then judging the equipment of the source of sound is
It is no to need external connection, if successful connection, as initial source of sound, the acquiescence source of sound in configuration information is otherwise read as initial
Source of sound；If event represents system closedown, current source of sound is kept into configuration information.
Further, the key-press event includes mode switching key event and multimedia switching key event；
The mode switching key event represents it is that the source of sound carried out by mode switching key switches；
The multimedia switching key thing represents it is that the source of sound carried out by multimedia switching key switches；
If event is mode switching key event, successively according to FM, AM, local is audio-visual, USB is audio-visual, the order of bluetooth and AUX
Switch over；
If event is multimedia switching key event, successively according to local is audio-visual, USB is audio-visual, bluetooth, AUX order are cut
Change；
Next source of sound is obtained according to current source of sound, judges whether corresponding equipment can use, if available, is switched to obtained
Next source of sound, if equipment is not connected with or cannot use, continues to judge another source of sound.
Further, when carrying out source of sound switching：
If initial source of sound, then the multimedia application name that acquiescence starts is read from configuration information, and start the multimedia
Application program；
If next source of sound, it is first determined whether there is matched multimedia application running, if not having, open
Matched default multimedia application program performs the switching of this source of sound in dynamic configuration information；If have more than one and its phase
Matched multimedia application is being run, then notice, which is the most recently used a multimedia application and performs this source of sound, cuts
Change, otherwise notify currently running multimedia application to perform the switching of this source of sound.
If event is system boot, if the source of sound before last shutdown is bluetooth, the stand-by period of a minutes, a are set
If being connected after minute without bluetooth equipment, initial source of sound is used as using the acquiescence source of sound in configuration information.
Repeat key in preset time is abandoned, avoids application program processing from being lined up and cause asking for interface operating lag
Topic.
Beneficial effects of the present invention：
（1）Unified source of sound switching control strategy is provided for multimedia application, need not receive and handle in multimedia application
Multiple source of sound handover events, can increasingly focus on the processing of interface and function logic, be conducive to lift user experience；
（2）When system includes multiple multimedia applications, each multimedia application source of sound switching can be effectively prevented from
Conflict；
（3）The present invention can improve the integrated and exploitation of in-vehicle multi-media system multimedia application on certain procedures
Efficiency.
Brief description of the drawings
Fig. 1 is the system framework figure of the present invention；
Fig. 2 is the principle of the present invention block diagram；
Fig. 3 is the flow chart of the present invention；
In figure, 1, multimedia application collection, 2, source of sound control module, 21, event-monitoring, 22, configuration management, 23, control
Processing, 3, vehicle mounted multimedia operating system.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention specially devises an in-vehicle multi-media system source of sound switching device 2, vehicle-mounted more matchmakers
System unites source of sound switching device 2 between vehicle mounted multimedia operating system 3 and multimedia application collection 1, for multimedia
The management of source of sound, consistent source of sound switchover policy is provided for in-vehicle multi-media system.
As shown in Fig. 2, in-vehicle multi-media system source of sound switching device 2 includes：
Event-monitoring module 21, docks received event and is pre-processed.
Configuration management module 22, reads and writes relevant configuration information in storage device, and the configuration information includes acquiescence sound
Source（Local music, radio）, acquiescence start multimedia application, external equipment sound source connection set（Such as：Bluetooth,
AUX（Audio input interface）、USB（Universal Serial Bus）Whether played immediately after connection）, play last time shutdown before source of sound set
Put.
Judging treatmenting module 23, including event is judged, according to the tactful and corresponding configuration information of setting, start
Multimedia application, and source of sound switching state is notified into corresponding application program.
In-vehicle multi-media system source of sound switching method as shown in Figure 3, using vehicle mounted multimedia system as described in the present invention
System source of sound switching device, its method comprise the following steps：
A, the event of in-vehicle multi-media system is monitored in real time.
Whether the event for B, judging to monitor is source of sound processing information, and the source of sound processing information represents that application program is logical
The source of sound switching of operating user interface execution is crossed, if so, then performing the switching of this source of sound, with reference to the state of audio subsystem, is obtained
To and record the source of sound that is currently played and the current application name for performing handover operation into memory；If it is not, then enter
Step C.
C, the type of event is judged, the type of event includes key-press event, equipment state event and system switching machine event.
When the event monitored is key-press event, then different source of sound switchover policy is performed according to different key, according to
The source of sound being presently in obtains next source of sound, and carries out source of sound switching；Specially：
The key-press event includes mode switching key event and multimedia switching key event；Wherein：The pattern switching is pressed
Key events represent it is that the source of sound carried out by mode switching key switches, and it is by more matchmakers that the multimedia switching key thing, which represents,
The source of sound switching that body switching key carries out.If mode switching key event, according to FM (FM receiver) → AM（Amplitude modulation is received
Sound machine）→ local audio-visual → USB is audio-visual → and bluetooth → AUX orders switch over.If multimedia switching key event, according to
Local audio-visual → USB is audio-visual → and bluetooth → AUX orders switch over.According to current source of sound, next source of sound is obtained, judges to correspond to
Equipment whether can use, if available, preparation is switched to the source of sound, if equipment is not connected with or cannot use, continues to judge
Another source of sound.Such as：Current source of sound is AM, and when received event is mode switching key event, then next source of sound is this
Ground is audio-visual.And for example：Whether current source of sound is local audio-visual, when receiving mode switching key event, then judge that USB is audio-visual and can use,
If available, it is audio-visual to switch to USB, if USB is audio-visual not connected or cannot use, judges whether bluetooth can use, if bluetooth
It can use, then switch to bluetooth.
When the event monitored is equipment state event, the equipment state event includes external sound source equipment and enters and outer
Portion audiogenic device disconnects, if event represents that external sound source equipment enters, and the external sound source equipment can with and be configured as immediately
Play, then using the external sound source equipment as next source of sound, and carry out source of sound switching, otherwise, only notify the external sound source equipment
Connect.Such as：When the event monitored is that have USB device access, and USB device can with and be configured as playing immediately, then
USB is provided as next source of sound, and carries out source of sound switching；Otherwise, only notice has USB device to connect.If event represents outer
Portion's audiogenic device disconnects, then judges whether the external sound source equipment is current source of sound, if so, then reading the acquiescence in configuration information
Source of sound carries out source of sound switching as next source of sound, otherwise, only notifies the external sound source equipment to disconnect.Such as：If current sound
Source is USB device, receives the event that USB device has disconnected at this time, then reads the acquiescence source of sound in configuration information as next
Source of sound, and corresponding source of sound switching is carried out, otherwise, only notify the USB device to disconnect.
When the event monitored is system switching machine event, the system switching machine event includes system boot and system is closed
Machine.If event represents system boot, the source of sound before last time shutdown is read from configuration information, if not shutting down source of sound letter
Breath, then read the acquiescence source of sound in configuration information as initial source of sound, if the source information that shuts down, then judge setting for the source of sound
It is standby whether to need external connection, if successful connection, as initial source of sound, otherwise read the acquiescence source of sound conduct in configuration information
Initial source of sound.Such as：Source of sound before last time shutdown is local source of sound, then when monitoring this start, directly by local source of sound
Played out as initial source of sound.If the acquiescence source of sound in configuration information is local source of sound, is monitoring system boot and do not having
Shut down source information, is played out at this time using local source of sound as initial source of sound.If event represents system closedown, keep current
Source of sound is into configuration information.
In the present invention, when carrying out source of sound switching：If initial source of sound（That is system boot scene）, then from configuration information
The multimedia application name that acquiescence starts is read, and starts the multimedia application.If next source of sound（Except airport
Other scenes outside scape）, it is first determined whether there is matched multimedia application running, if not having, start
Matched default multimedia application program performs the switching of this source of sound in configuration information；If have more than one and its phase
The multimedia application matched somebody with somebody is being run, then notice, which is the most recently used a multimedia application and performs this source of sound, cuts
Change, otherwise notify currently running multimedia application to perform the switching of this source of sound.
In the present embodiment, if event is system boot, if the source of sound before last shutdown is bluetooth, set a minutes
（Such as：2 minutes）Stand-by period, if after a minutes without bluetooth equipment connect, using the acquiescence source of sound in configuration information as
Initial source of sound.
In the present embodiment, processing is optimized to the key-press event of monitoring, including：Button Key dithering, in short time 500ms
Repeat key abandon, avoid application program processing be lined up and cause interface operating lag.The long-press of button judges, by long-press and
The effect of short-press separates, and notifies application program.
Claims (6)
1. a kind of in-vehicle multi-media system source of sound switching device, including：
Event-monitoring module（21）, dock received event and pre-processed；
Configuration management module（22）, relevant configuration information is read and write, the configuration information includes acquiescence source of sound, gives tacit consent to the more of startup
The source of sound that media application, the connection of external equipment sound source are set and played before last time shutdown is set；
Judging treatmenting module（23）, event is judged, according to the tactful and corresponding configuration information of setting, starts multimedia
Application program, and source of sound switching state is notified into corresponding application program.
2. a kind of in-vehicle multi-media system source of sound switching method, it is characterised in that using vehicle-mounted more matchmakers as claimed in claim 1
System system source of sound switching device（2）, its method comprises the following steps：
A, in-vehicle multi-media system is monitored in real time（1）Event；
B, judge whether the event that monitors is source of sound processing information, the source of sound processing information represent application program be by using
The source of sound switching that family interface operation performs, if so, then perform the switching of this source of sound, records the source of sound that is currently played and current
Perform the application name of handover operation；If it is not, then enter step C；
C, the type of event is judged, the type of event includes key-press event, equipment state event and system switching machine event；
When the event monitored is key-press event, then different source of sound switchover policy is performed according to different key, according to current
Residing source of sound obtains next source of sound, and carries out source of sound switching；
When the event monitored is equipment state event, the equipment state event includes external sound source equipment and enters and exterior sound
Source device disconnects, if event represents that external sound source equipment enters, and the external sound source equipment can with and be configured as playing immediately,
Then using the external sound source equipment as next source of sound, and source of sound switching is carried out, otherwise, only notify the external sound source equipment to connect
Connect；If event represents that external sound source equipment disconnects, judge whether the external sound source equipment is current source of sound, if so, then reading
Acquiescence source of sound in configuration information carries out source of sound switching as next source of sound, otherwise, only notifies the external sound source equipment to break
Open；
When the event monitored is system switching machine event, the system switching machine event includes system boot and system closedown；
If event represents system boot, the source of sound before last time shutdown is read from configuration information, if not shutting down source information,
The acquiescence source of sound in configuration information is read as initial source of sound, if the source information that shuts down, then judging the equipment of the source of sound is
It is no to need external connection, if successful connection, as initial source of sound, the acquiescence source of sound in configuration information is otherwise read as initial
Source of sound；If event represents system closedown, current source of sound is kept into configuration information.
3. in-vehicle multi-media system source of sound switching method according to claim 2, it is characterised in that：The key-press event bag
Include mode switching key event and multimedia switching key event；
The mode switching key event represents it is that the source of sound carried out by mode switching key switches；
The multimedia switching key thing represents it is that the source of sound carried out by multimedia switching key switches；
If event is mode switching key event, successively according to FM, AM, local is audio-visual, USB is audio-visual, the order of bluetooth and AUX
Switch over；
If event is multimedia switching key event, successively according to local is audio-visual, USB is audio-visual, bluetooth, AUX order are cut
Change；
Next source of sound is obtained according to current source of sound, judges whether corresponding equipment can use, if available, is switched to obtained
Next source of sound, if equipment is not connected with or cannot use, continues to judge another source of sound.
4. the in-vehicle multi-media system source of sound switching method according to Claims 2 or 3, it is characterised in that：Carrying out source of sound
During switching：
If initial source of sound, then the multimedia application name that acquiescence starts is read from configuration information, and start the multimedia
Application program；
If next source of sound, it is first determined whether there is matched multimedia application running, if not having, open
Matched default multimedia application program performs the switching of this source of sound in dynamic configuration information；If have more than one and its phase
Matched multimedia application is being run, then notice, which is the most recently used a multimedia application and performs this source of sound, cuts
Change, otherwise notify currently running multimedia application to perform the switching of this source of sound.
5. in-vehicle multi-media system source of sound switching method according to claim 4, it is characterised in that：If event is opened for system
Machine, if the source of sound before last shutdown is bluetooth, sets the stand-by period of a minutes, if connecting after a minutes without bluetooth equipment
Connect, be then used as initial source of sound using the acquiescence source of sound in configuration information.
6. the in-vehicle multi-media system source of sound switching method according to Claims 2 or 3 or 5, it is characterised in that：When will be default
Interior repeat key abandons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164824.2A CN107920311B (en) | 2017-11-21 | 2017-11-21 | Sound source switching device and method for vehicle-mounted multimedia system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164824.2A CN107920311B (en) | 2017-11-21 | 2017-11-21 | Sound source switching device and method for vehicle-mounted multimedia system |
Publications (2)
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| CN107920311A true CN107920311A (en) | 2018-04-17 |
| CN107920311B CN107920311B (en) | 2020-01-10 |
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ID=61897546
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711164824.2A Active CN107920311B (en) | 2017-11-21 | 2017-11-21 | Sound source switching device and method for vehicle-mounted multimedia system |
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| CN109857538A (en) * | 2019-03-13 | 2019-06-07 | 法法汽车(中国)有限公司 | Switch the method and steering wheel of car-mounted terminal application program |
| CN114579193A (en) * | 2022-03-08 | 2022-06-03 | 国泰新点软件股份有限公司 | Multi-system loading method, device, equipment and storage medium |
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| CN107920311B (en) | 2020-01-10 |
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Application publication date: 20180417 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd. Contract record no.: X2021500000014 Denomination of invention: Sound source switching device and method of vehicle multimedia system Granted publication date: 20200110 License type: Common License Record date: 20211014 |