CN101633337B - Vehicle audible device - Google Patents
Vehicle audible device Download PDFInfo
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- CN101633337B CN101633337B CN 200810128166 CN200810128166A CN101633337B CN 101633337 B CN101633337 B CN 101633337B CN 200810128166 CN200810128166 CN 200810128166 CN 200810128166 A CN200810128166 A CN 200810128166A CN 101633337 B CN101633337 B CN 101633337B
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Abstract
The invention provides a vehicle audible device. When an ignition switch of an automobile is switched from the off to the on, even if a USB interface is connected with USB equipment slow to connect and authenticate, the vehicle audible device cannot switch to the USB equipment, but continues to play an audible signal source before the ignition switch is off. The vehicle audible device is provided with the USB interface, a detection unit, a play unit and a control unit, wherein the control unit judges whether the USB equipment and the USB equipment connected with the USB interface before the ignition switch is off are the same one when the detection unit detects that the USB interface is connected with the USB equipment; if the two sets of USB equipment are judged as the same one, the audible signal source before the ignition switch is off is played; and if the two USB equipment are judged as the different ones, data stored in the USB equipment is played.
Description
Technical field
The present invention relates to a kind of vehicle-mounted voice band device, particularly can carry out the vehicle-mounted voice band device that USB interface is judged.
Background technology
In the past; When in vehicle-mounted voice band device, connecting USB storage (for example, iPod etc.); Because it has plug and play (plug and play) function, can automatically detect this USB storage, and switch to this USB storage from other in progress audio signal sources; Carry out the broadcast of this USB storage, can reduce operation like this to make things convenient for the user.
But, if being connected with, vehicle-mounted voice band device connects the slower USB device of authentication, this audio devices is in the broadcasting of playing self-tuner simultaneously; After close the car ignition switch, opening ignition switch then, this vehicle-mounted voice band device gets into holding state; The USB device that can rejudge USB interface connects situation; For connecting the slower USB device of authentication, will be judged as the USB device that after ignition switch is opened, is inserted into, thereby can play the data of storing in this USB device; Can not continue to play the user and want the broadcasting that comes self-tuner of listening to; If the user wants to listen to the broadcasting of self-tuner, then need carry out the switching of audio signal source, make troublesome poeration.
Summary of the invention
Therefore In view of the foregoing; The object of the present invention is to provide a kind of vehicle-mounted voice band device; Close when being transformed into ignition switch and opening by ignition switch at automobile; Connect the slower USB device of authentication even USB interface is connected with, also can not switch to this USB device, close audio signal source before but continue to play ignition switch.
Vehicle-mounted voice band device of the present invention, the plug-and-play feature when having the USB device connection can be switched and play a plurality of audio signal sources, comprising: USB interface connects USB device; Detecting unit detects above-mentioned USB interface and whether is connected with USB device; Broadcast unit is play the data in the above-mentioned USB device; And control module; Close in ignition switch and to switch under the situation that ignition switch opens; When above-mentioned detecting unit does not detect above-mentioned USB interface when being connected with USB device, the audio signal source of being play before closing with above-mentioned ignition switch is play, when above-mentioned detection goes out above-mentioned USB interface and is connected with USB device; Judge whether the USB device that above-mentioned USB interface connects is same equipment with the USB device that above-mentioned ignition switch pass above-mentioned USB interface before is connected; When being judged as when being same equipment, the audio signal source of being play before closing with above-mentioned ignition switch is play, when being judged as when not being same equipment; Switch to above-mentioned USB device, play by above-mentioned broadcast unit.
And in the vehicle-mounted voice band device of the present invention, above-mentioned detecting unit is supplied to the source current of USB device to judge whether above-mentioned USB interface is connected with USB device through supervision after ignition switch is opened.
And; In the vehicle-mounted voice band device of the present invention; The above-mentioned judgement of above-mentioned control module is through the USB ID of USB device and the judgement of number of files are carried out; When closing USB ID and the number of files that switches to the USB device that is connected above-mentioned USB interface when ignition switch is opened, USB ID and number of files homogeneous phase while with the above-mentioned ignition switch pass USB device that is connected above-mentioned USB interface before, be judged as same equipment by ignition switch.
And the present invention provides a kind of audio reproduction method of vehicle-mounted voice band device, comprising: detect step, detect USB interface and whether be connected with USB device; And controlled step; Close in ignition switch and to switch under the situation that ignition switch opens; When not detecting above-mentioned USB interface in the above-mentioned detection step when being connected with USB device, the audio signal source of being play before closing with above-mentioned ignition switch is play, when detecting above-mentioned USB interface in the above-mentioned detection step when being connected with USB device; Judge whether the USB device that above-mentioned USB interface connects is same equipment with the USB device that above-mentioned ignition switch pass above-mentioned USB interface before is connected; When being judged as when being same equipment, the audio signal source of being play before closing with above-mentioned ignition switch is play, when being judged as when not being same equipment; Switch to above-mentioned USB device, carry out the broadcast of data in the USB device.
And, in the audio reproduction method of vehicle-mounted voice band device of the present invention, in above-mentioned detection step, after ignition switch is opened, be supplied to the source current of USB device to judge whether above-mentioned USB interface is connected with USB device through supervision.
In addition; In the audio reproduction method of vehicle-mounted voice band device of the present invention; The above-mentioned judgement of above-mentioned controlled step is through the USB ID of USB device and the judgement of number of files are carried out; When closing USB ID and the number of files that switches to the USB device that is connected above-mentioned USB interface when ignition switch is opened, USBID and number of files homogeneous phase while with the above-mentioned ignition switch pass USB device that is connected above-mentioned USB interface before, be judged as same equipment by ignition switch.
Description of drawings
Fig. 1 is the structural drawing of vehicle-mounted voice band device of the present invention.
Fig. 2 is the functional block diagram of vehicle-mounted voice band device of the present invention.
Fig. 3 is the control flow chart of the audio reproduction method of vehicle-mounted voice band device of the present invention.
Embodiment
Specify embodiment of the present invention according to accompanying drawing below.
Fig. 1 is the structural drawing of vehicle-mounted voice band device of the present invention.
In Fig. 1, vehicle-mounted voice band device of the present invention is the audio devices that can play USB device (for example, iPod etc.), is made as here with radio devices to be integrated, and can certainly be provided with separately.This vehicle-mounted voice band device for example comprises antenna, amplifier, loudspeaker, PLL circuit, reception signal strength detection circuit, receiving platform setup unit, accepting state judging unit, action decision unit etc.
Wherein, data are extracted unit 6 out, can be at display unit data presented (for example, the lyrics etc.) and Word messages such as USB ID, number of files and USB capacity from the extracting data that is stored in USB device.
Homogeneity judging unit 7; Judge extract the information such as USB ID, number of files and USB capacity of extracting out unit 6 out from above-mentioned data; Particularly; Be to judge information such as above-mentioned USB ID, number of files and USB capacity that automobile is in the USB device that be connected USB interface 2 of ignition switch before closing the information such as above-mentioned USB ID, number of files and USB capacity with the USB device that is connected this USB interface 2 after ignition switch is opened are identical,, then have homogeneity when this is judged as when identical.
Signal source switch unit 8; When above-mentioned homogeneity judging unit 7 be judged as automobile when being in the USB device that is connected this USB interface 2 after the USB device that is connected USB interface 2 and the ignition switch of ignition switch before closing opened and not having homogeneity, be connected the USB device of this USB interface 2 after this ignition switch is opened and play switching to.
Video data control module 9, further extraction can export these data to display unit then display unit data presented (for example, the lyrics etc.) from above-mentioned data extraction unit 6.
The USB control part converts the numerical information in the USB device to analog information, and the Word message in this analog information is outputed to data extraction unit 6, the audio signal output in this analog information is arrived select circuit.
Fig. 2 is the functional block diagram of vehicle-mounted voice band device 1 of the present invention.This vehicle-mounted voice band device 1 comprises: USB interface 2, detecting unit 3, broadcast unit 4 and control module 5.
Whether detecting unit 3 has source current to be supplied to mode such as USB device to judge whether above-mentioned USB interface 2 is connected with USB device through keeping watch on after ignition switch is opened.
The data of storing in 4 pairs of USB devices of broadcast unit are play, and can play various videos and voice datas such as rm, rmvb.This broadcast unit 4 comprises front end, IF/DET, selection circuit, volume control circuit, mute circuit, AMP, the PLL circuit among Fig. 1 and receives signal intensity circuit etc.
Fig. 3 is the control flow chart of the audio reproduction method of vehicle-mounted voice band device 1 of the present invention.As shown in Figure 3, be in the automobile of ignition switch off status, used key operated; When being in ignition switch and opening (step 301); Vehicle-mounted voice band device 1 is in holding state, and whether detecting unit 3 detects immediately has source current etc. to be supplied to USB interface 2, and whether promptly keep watch on has source current to be supplied to USB device; Thereby judged whether that USB device is connected on the USB interface 2 (step 302); Be not connected 2 last times of USB interface if detected USB device, the audio signal source of being play before then closing with ignition switch (among Fig. 3, signal source originally) is play (step 303).
If detecting unit 3 has detected USB device and has been connected 2 last times of USB interface, control module 5 is through to the contrast of the USB ID of front and back USB device and number of files or to the homogeneity affirmation processing (step 304) to the USB device that recently carries out being connected of the USB ID of front and back USB device and USB capacity (comprising: idle capacity with utilize capacity).
This homogeneity is meant that being in the USB device that is connected this USB interface 2 after whether the USB device that is connected USB interface 2 of ignition switch before closing opened with ignition switch at automobile is same equipment; The USB ID of above-mentioned front and back USB device and the contrast of number of files be meant by ignition switch close switch to the USB device that is connected USB interface 2 when ignition switch is opened USB ID with number of files, close the USB ID of the USB device that is connected USB interface 2 before and the contrast of number of files with ignition switch; When this USB ID and number of files homogeneous phase while; Think same equipment, promptly have homogeneity; When identical and above-mentioned two the number of files differences of above-mentioned two USB ID or above-mentioned two USB ID are different and identical or above-mentioned two the USB ID of above-mentioned two number of files are different and above-mentioned two number of files condition of different under; All think not to be same equipment, promptly do not have homogeneity; The USB ID of above-mentioned USB device and the contrast of USB capacity be meant by ignition switch close switch to the USB device that is connected USB interface 2 when ignition switch is opened USB ID with the USB capacity, close the USB ID of the USB device that is connected USB interface 2 before and the contrast of USB capacity with ignition switch; When this USB ID and USB capacity homogeneous phase while; Think same equipment, promptly have homogeneity; Identical or above-mentioned two the USB ID of above-mentioned two USB capacity are different when different or above-mentioned two the USB ID of identical and above-mentioned two the USB capacity of above-mentioned two USB ID are different and above-mentioned two USB capacity condition of different under; All think not to be same equipment, promptly do not have homogeneity.
When being judged as of 5 pairs of USB devices of control module had homogeneity, then this vehicle-mounted voice band device 1 was play (step 305) with the audio signal source of being play before the ignition switch pass (among Fig. 3, signal source originally); When being judged as of 5 pairs of USB devices of control module do not have homogeneity, then switch to broadcast unit 4, the broadcast (step 306) of the data of carrying out being stored in the USB device.
The audio signal source that above-mentioned ignition switch is play before closing can come the broadcasting of self-tuner, also can be from the broadcast of the CD of CD-ROM etc.
Vehicle-mounted voice band device of the present invention is compared with vehicle-mounted voice band device in the past; Close when being transformed into ignition switch and opening by ignition switch at automobile; Even being connected with, USB interface connects the slower USB device of authentication; Can not switch to this USB device yet, close audio signal source before but continue to play ignition switch.But the present invention is not limited to this, and the present invention can carry out various distortion.And the various improvement of having done based on spirit of the present invention, all in protection scope of the present invention.
Claims (6)
1. vehicle-mounted voice band device has the plug-and-play feature of USB device when connecting, and can switch and play a plurality of audio signal sources, it is characterized in that, comprising:
USB interface connects USB device;
Detecting unit detects above-mentioned USB interface and whether is connected with USB device;
Broadcast unit is play the data in the above-mentioned USB device; And
Control module; Close in ignition switch and to switch under the situation that ignition switch opens; When above-mentioned detecting unit does not detect above-mentioned USB interface when being connected with USB device, the audio signal source of being play before closing with above-mentioned ignition switch is play, when above-mentioned detection goes out above-mentioned USB interface and is connected with USB device; Judge whether the USB device that above-mentioned USB interface connects is same equipment with the USB device that above-mentioned ignition switch pass above-mentioned USB interface before is connected; When being judged as when being same equipment, the audio signal source of being play before closing with above-mentioned ignition switch is play, when being judged as when not being same equipment; Switch to above-mentioned USB device, play by above-mentioned broadcast unit.
2. vehicle-mounted voice band device according to claim 1 is characterized in that,
Above-mentioned detecting unit is supplied to the source current of USB device to judge whether above-mentioned USB interface is connected with USB device through supervision after ignition switch is opened.
3. vehicle-mounted voice band device according to claim 1 is characterized in that,
The above-mentioned judgement of above-mentioned control module is through the USB ID of USB device and the judgement of number of files are carried out; When close USB ID and the number of files that switches to the USB device that is connected above-mentioned USB interface when ignition switch is opened by ignition switch; USB ID and number of files homogeneous phase while with the above-mentioned ignition switch pass USB device that is connected above-mentioned USB interface before, be judged as same equipment.
4. the audio reproduction method of a vehicle-mounted voice band device is characterized in that, comprising:
Detect step, detect USB interface and whether be connected with USB device; And
Controlled step; Close in ignition switch and to switch under the situation that ignition switch opens; When not detecting above-mentioned USB interface in the above-mentioned detection step when being connected with USB device, the audio signal source of being play before closing with above-mentioned ignition switch is play, when detecting above-mentioned USB interface in the above-mentioned detection step when being connected with USB device; Judge whether the USB device that above-mentioned USB interface connects is same equipment with the USB device that above-mentioned ignition switch pass above-mentioned USB interface before is connected; When being judged as when being same equipment, the audio signal source of being play before closing with above-mentioned ignition switch is play, when being judged as when not being same equipment; Switch to above-mentioned USB device, carry out the broadcast of data in the USB device.
5. the audio reproduction method of vehicle-mounted voice band device according to claim 4 is characterized in that,
In above-mentioned detection step, after ignition switch is opened, be supplied to the source current of USB device to judge whether above-mentioned USB interface is connected with USB device through supervision.
6. the audio reproduction method of vehicle-mounted voice band device according to claim 4 is characterized in that,
The above-mentioned judgement of above-mentioned controlled step is through the USB ID of USB device and the judgement of number of files are carried out; When close USB ID and the number of files that switches to the USB device that is connected above-mentioned USB interface when ignition switch is opened by ignition switch; USB ID and number of files homogeneous phase while with the above-mentioned ignition switch pass USB device that is connected above-mentioned USB interface before, be judged as same equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810128166 CN101633337B (en) | 2008-07-21 | 2008-07-21 | Vehicle audible device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810128166 CN101633337B (en) | 2008-07-21 | 2008-07-21 | Vehicle audible device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101633337A CN101633337A (en) | 2010-01-27 |
| CN101633337B true CN101633337B (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810128166 Expired - Fee Related CN101633337B (en) | 2008-07-21 | 2008-07-21 | Vehicle audible device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611963B (en) * | 2012-03-16 | 2014-08-06 | 五邑大学 | Intelligent sound volume adjusting system of vehicular sounder |
| CN106157984B (en) * | 2015-03-24 | 2019-03-08 | 阿尔派株式会社 | Onboard audio playing device and audio frequency playing method |
| CN107784218A (en) * | 2017-10-23 | 2018-03-09 | 广州视源电子科技股份有限公司 | It is a kind of for the starting-up method of terminal device, device, equipment and storage medium |
| CN111935519B (en) * | 2020-08-14 | 2022-04-08 | 海信视像科技股份有限公司 | Channel switching method and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623519Y (en) * | 2003-07-01 | 2004-07-07 | 重庆深渝电子有限公司 | Vehicle mounted radio and tape player with a USB interface |
| CN2644227Y (en) * | 2003-09-12 | 2004-09-29 | 刘汶锋 | Digital audio apparatus for automobile |
| CN1596038A (en) * | 2003-09-09 | 2005-03-16 | 阿尔派株式会社 | Audio device and audio processing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010094214A (en) * | 2000-04-04 | 2001-10-31 | 박찬화 | A automatic listening apparatus of portable sound mechanism using Car Stereo |
| JP2007272936A (en) * | 2006-03-30 | 2007-10-18 | Clarion Co Ltd | Onboard information equipment, control method of onboard information equipment, and control program |
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2008
- 2008-07-21 CN CN 200810128166 patent/CN101633337B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623519Y (en) * | 2003-07-01 | 2004-07-07 | 重庆深渝电子有限公司 | Vehicle mounted radio and tape player with a USB interface |
| CN1596038A (en) * | 2003-09-09 | 2005-03-16 | 阿尔派株式会社 | Audio device and audio processing method |
| CN2644227Y (en) * | 2003-09-12 | 2004-09-29 | 刘汶锋 | Digital audio apparatus for automobile |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-272936A 2007.10.18 |
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| CN101633337A (en) | 2010-01-27 |
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Granted publication date: 20121212 Termination date: 20160721 |