CN1308856C - Vehicle carried multimedia information inquiry system and method - Google Patents
Vehicle carried multimedia information inquiry system and method Download PDFInfo
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- CN1308856C CN1308856C CNB2004100781197A CN200410078119A CN1308856C CN 1308856 C CN1308856 C CN 1308856C CN B2004100781197 A CNB2004100781197 A CN B2004100781197A CN 200410078119 A CN200410078119 A CN 200410078119A CN 1308856 C CN1308856 C CN 1308856C
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- information inquiry
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Abstract
The present invention provides a vehicle-mounted multimedia information inquiry system and a method which are used for playing vehicle-mounted multimedia film and video data and inquiring travel information data. The vehicle-mounted multimedia information inquiry system comprise a display device, a central digital control device and an audio frequency amplification device. The present invention has the contribution that the central digital control device of the system is connected with a FLASH CARD dynamic memory through a reading device and sets a communication code; multimedia film and video data and interaction browsing information data are stored in the dynamic memory by sections. When the vehicle-mounted multimedia information inquiry system is started for playing, sequential playing and random playing are executed; a menu / selection press key can be operated in the process of playing for providing service of map information inquiry, hotel information inquiry, restaurant information inquiry, travel information inquiry, etc.; the present invention is greatly convenient for travel life and uses travel resources.
Description
Technical field
The present invention relates to a kind of multimedia information inquiry system, relate in particular to a kind of system and method for realizing long-distance car or broadcast of taxi car inner multimedia and information searching function.
Background technology
Multimedia play system is used comparatively general in the long-distance travel car, is mainly used in to play feature film or advertisement, enriches the journey life.These multimedia play systems do not possess information searching function.In the journey life, information inquiry can bring great convenience to the passenger, and the information of aspects such as particularly relevant map, hotel, food and drink, tourism helps fully developing the journey resource, makes things convenient for the journey life.Existing vehicle mounted multimedia function is simple, does not satisfy customer requirement.
Summary of the invention
The objective of the invention is to, a kind of vehicle carried multimedia information inquiry system is provided, to realize the inquiry and the multi-media player function of screen message in the car.
For this reason, the invention provides a kind of vehicle carried multimedia information inquiry system, comprising: display device, the output that is used for the executive system data shows; The digital control device of core connects described display device, the running status of control system; Audio amplification device connects the digital control device of described core, is used to play television data, and controlled by it, and it is connected with loudspeaker; Power control unit connects digital control device of described core and display device, controls the on off operating mode of its working power and motor vehicle dc supply; This system also comprises a FLASH CARD dynamic storage device, connect with the digital control device of core by system's fetch equipment, establish special-purpose recognition unit in system's fetch equipment, be used for realizing encrypting by special-purpose communication interface between system's fetch equipment and the dynamic storage device, establish multimedia movie data memory unit and interactive browse information material storage unit in the dynamic storage device.
Simultaneously, the invention provides a kind of vehicle carried multimedia information inquiry method, this method is carried out following steps: dynamic storage device is docked with the system fetch equipment, carry out cryptographic check by system's fetch equipment, by after, system carries out the search of its memory cell content of dynamic storage device, and is that the multimedia movie data shows on display unit with Search Results; The content in first search played in order media file data storage district during systematic search, if content exists, execution sequence playing program then, and play the content of shuffle media file data continuously; Otherwise directly carry out the program of shuffle media file data; When system carries out the play multimedia television data, by guidance panel menu/selection key, obtain the memory contents of interactive browse information material storage unit, and show by display device.
Compared with the prior art, vehicle carried multimedia information inquiry system provided by the invention, by dynamic storage storage multimedia movie data and interactive browse information material, with the digital control device encryption communication of core, not only can realize the broadcast of multimedia movie data, the inquiry of journey information material can also be provided, greatly make things convenient for the passenger to live, dynamic storage can enrich play content so that memory contents is full of variety.
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the circuit principle structure figure of vehicle carried multimedia information inquiry system of the present invention.
Fig. 2 is a vehicle carried multimedia information inquiry system multimedia sequential flowchart of the present invention.
Fig. 3 is a vehicle carried multimedia information inquiry system information inquiry process flow diagram of the present invention.
Fig. 4 is the circuit diagram of vehicle carried multimedia information inquiry system infrared distance measurement switch of the present invention.
Fig. 5 is the circuit diagram of the infrared hotness teleswitch of vehicle carried multimedia information inquiry system of the present invention.
Embodiment
See also Fig. 1, Fig. 1 has represented a kind of vehicle carried multimedia information inquiry system, this system comprises display device, can be LCD LCDs 40 or other kinescope display, the output that is used for the executive system data shows, system also comprises the digital control device 30 of a core, can be connected with LCD display 40 by the LCD drive plate, circuit of display driving also can be integrated in the digital control device of core, the running status of control system, the digital control device of core can also be provided with USB interface, and other available data of ROM memory are set.System also comprises an audio amplification device 70, connects the digital control device 30 of described core, is used for audio conversion and plays television data, is subjected to digital control device 30 controls of its core, and it is connected with loudspeaker 80, is used for voice output, and is subjected to button 95 controls.
System also comprises a FLASH CARD (CF card) dynamic storage device 10, connect with the digital control device 30 of core by system's fetch equipment 20, establish special-purpose recognition unit in system's fetch equipment 20, between realization system fetch equipment 20 and the dynamic storage device 10, whether the content by the cryptographic check identification memory card is own required, system's fetch equipment also can use special-purpose communication interface circuit board, finishes identical function.In dynamic storage device 10, establish multimedia movie data memory unit and interactive browse information material storage unit, store the relevant information data respectively, finish multimedia and information browse function.Multimedia movie data memory unit subregion stores played in order media file data and shuffle media file data.Interactive browse information material storage unit is divided into a plurality of memory blocks, and each memory block is the menu level domain structure, respectively storing map information inquiry data, hotel information inquiry data, catering information inquiry data and travel information inquiry data.
The power control unit 50 of this system for the digital control device 30 of core or circuit other parts for example display working power is provided, control the break-make of its working power and motor vehicle dc supply.
Can be connected the infrared distance measurement switch on the link circuit of power control unit and automobile 12V power supply,, judge the existence of human body, realize break-make control by infrared light sensing human body distance, when the someone exists onboard, this system works, otherwise turn off.For example adopt infrared integrated receiving tube of PIC-21043 and infrared transmitting tube to be used, realize this scheme.
See also Fig. 4, Fig. 4 has represented the control principle of infrared distance measurement switch, its circuit is made of infrared emission circuit and infrared receiving circuit, radiating circuit is formed by connecting by the different pulse square wave-generator NE556 of two-stage frequency, the square-wave output signal 10 of prime pulse square wave-generator U1A connects the modulating stage R of back level pulse square wave-generator U1B, the pulse signal of back level is decided frequency modulation (PFM) output, its output terminal Q connects infrared light light emitting diode D6 by regulating resistance R 11, regulates the emissive power size according to different situations; Infrared receiving circuit connects comparer LM358 by infrared integrated receiving tube by the J2 connector and constitutes, after receiving by described infrared integrated receiving tube with the infrared signal of human body distance dependent, with comparer relatively, form the switch outputs level signals, by judging the existence of human body, realize break-make control.The concrete course of work can be understood like this: two-stage NE556 chip, cooperate corresponding resistance capacitance value, produce the pulse square wave signal of two kinds of frequencies, previous stage NE556 produces the square wave of 1K hertz, back one-level NE556 produces the square wave of 38K hertz, the prime pulse signal is as the modulation signal of modulation back level, the common infrared transmitting tube LED that drives, the reason that produces 38K hertz and 1K hertz modulating wave is as effectively resisting the fixing Infrared that exists of large nature, the Nature Infrared does not have fixed frequency, can be at receiving end by 38K hertz frequency-selecting detection device with its interference filtering, greatly improve stiffness of system.Infrared transmitting tube carries an adjustable potentiometer R11, thereby being used for the modulate emission tube current changes the watt level of emission Infrared, realize in the certain limit apart from adjustable function.Receiving end adopts the infrared integrated receiving tube of PIC-21043 (the perhaps similar universal product), and embedded amplification, detection, frequency selection circuit detect at 38K hertz modulated red external wave specially, thereby recover the modulated pulse signal of original 1k hertz.The pulse signal of detection output is delivered to low-pass filter and is carried out the integrating circuit operation, obtains constant output level, and the various shake burrs of filtering simultaneously increase delay time, make system performance more reliable, has reduced being subjected to the probability that the short time impact of interference influences.The constant level of output is that the light intensity that reflects is relevant with reflective distance again, so this output level has reflected apart from situation with the light intensity direct ratio that reflects.Constant level is delivered to comparer LM538 unit, is used for producing the switch output signal of 12V, drives in-vehicle multi-media system work.
Referring to shown in Figure 5, Fig. 5 has represented that power control switch is the technical scheme of infrared hotness teleswitch, its circuit connects polystage amplifier, the window comparator that is connected in parallel and output delay circuit successively by temperature sensor and constitutes, by the infrared sensing human body temperature, judge the existence of human body, realize the control of time-delay break-make.Its circuit working principle can be explained like this: the constant body temperature about human body 37 degree, send the infrared ray about specific wavelength 10 μ m, and infrared probe is surveyed the infrared ray about 10 μ m of human body emission and is carried out work.Human body is launched and is gathered on the infrared induction source after infrared ray about 10 μ m strengthens by your optical filter of luxuriant and rich with fragrance mud.The pyroelectricity element is adopted in the infrared induction source, and this element will lose charge balance when the human infrared radiation temperature changes receiving, and outwards discharges electric charge, and subsequent conditioning circuit is handled the generation signal after testing.Sensor component uses the pir sensor LHi968 of German PerkinElmer company, increases the Fei Nier lens based on the actual application requirements.Sensor sensing to faint people's body heat release infrared signal and carry out just amplifying through amplifier U1A, the signal of U1A output is added to U1B and amplifies after capacitive coupling, the effect of W1 is that the mid-point voltage with U1B is lifted to 3.5V.Being added to the window comparator of being made up of U1C and U1D through the signal after the U1B amplification detects.According to the difference of human body moving direction, the voltage of P1 induction also should be plus or minus mutually, is fully utilized in order to guarantee the signal Vi after amplifying, and has adopted the window comparator circuit so improve the accuracy of monitoring.Set V1=4.0V by W2, W3, V2=2.9V, V2＜Vi in the time of the unmanned state＜V1, noise and the undesired signal of this moment all drop in the scope of 2.9-4.0V, having guaranteed not can false triggering, U1C and U1D output all are high level, D1 and D2 by.Vi＞V1 or Vi＜V2 when the people is movable, this moment, Vi no longer fell in the scope of 2.9-4.0V U1D or U1C output low level, D1 or D2 conducting.U2A forms delay circuit as voltage comparator.Obtain threshold value 6V by R8, R9 dividing potential drop, R7 reaches the purpose of time-delay for slow C7 charging.D1 or D2 conducting in the time of the people, capacitor C 7 be by rapid discharge, the anti-phase 0.7V that is input as of U2A, and positive input voltage 6V is so U2A exports the high level of 12V nearly.When unmanned the time D1 and D2 by, so since R7 the process to the C7 charging is also quite slow greatly, when charging process made that the voltage of C7 is higher than 6V, the reverse inter-input-ing voltage of U2A was higher than the positive input voltage, U2A output low level 0V.So realize when having monitored man-hour output high level, the people leave or physiognomy to static time output step-down at once not, and keep a period of time (during by above parameter, delay time is 105 seconds), if during detect the people once more and move, C7 can be once more by rapid discharge, restarts new one and takes turns time-delay.U3 is 7805 stabilized voltage supply pieces, and the dividing potential drop that its 5V output is used for the power supply of sensor and W1, W2, W3 obtains stable datum.Both can reduce of the interference of other circuit, also avoid the influence of the variation of automobile storage battery output voltage the testing circuit threshold value to probe power.W1, W2, W3 can use fixed resistance to replace in the actual production.
When vehicle carried multimedia information inquiry system of the present invention is applied to taxi, power control switch can be connected on the electric power loop of being controlled by taxi empty wagons board control switch 60, realizes synchro control with the empty wagons board, by the user mode of empty wagons board, judge the existence of human body, realize break-make control.
See also Fig. 2, Fig. 3, accompanying drawing has been represented vehicle carried multimedia information inquiry method provided by the invention, this method is execution in step 300 at first, dynamic storage device is docked with the system fetch equipment, controlled by power switch, carry out cryptographic check (step 310) by system's fetch equipment, by after, judge display device whether work (step 320), show start-up picture (step 330), system carries out the search of its memory cell content of dynamic storage device, if the content (step 340) in first search played in order media file data storage district is content existence, then execution sequence playing program (step 350), carry out shuffle content inspection (step 360) after finishing, exist, then play the content (step 370) of shuffle media file data, otherwise, system carries out the search of its memory cell content of dynamic storage device, returns step 340.During start,, return shuffle content inspection (step 360), exist, then carry out the program (step 380) of shuffle media file data if the played in order contents of program does not exist; And return played in order by menu operation and detect (step 340).
In addition, see also Fig. 3, Fig. 3 has represented to obtain the method for interactive browse information material, when system carries out the play multimedia television data, by guidance panel menu/selection key successively, obtain interactive browse information material master menu respectively successively, select master menu, return the upper level option by " returning " menu, master menu is respectively first order menu directory-cartographic information inquiry (step 100), Level-2 menu catalogue-hotel information inquiry (step 130), Level-3 menu catalogue-catering information inquiry (step 160) and fourth stage menu directory-travel information inquiry or other more option, in operation, down, a left side, right button, obtain corresponding submenu content respectively, obtain the next stage master menu by menu/selection key, concrete steps are as follows:
By actions menu/selection key (step 240), enter first order menu directory-cartographic information inquiry (step 100), select successively by operation upper and lower, left and right buttons (step 110) that orientation inquiry, service/food and drink/government organs/bank/hotel/shopping position guide and map are auspicious separates cascade menu, press menu/selection key (step 120), confirm institute's Query Information classification, obtain required content, enter next process (step 130) after finishing.
Enter Level-2 menu catalogue-hotel information inquiry (step 130), search information category by operation upper and lower, left and right button, select area dividing, hotel's name list, hotel service to introduce cascade menu (step 140), press menu/selection key (step 150), confirm institute's Query Information classification, obtain required content, enter next process (step 160) after finishing.As getting back to upper level master menu (step 230) by " returning ".
Enter Level-3 menu catalogue-catering information inquiry (step 160), search information category by operation upper and lower, left and right button, select kind division, eating and drinking establishment's name list, concrete service to introduce cascade menu (step 170), press menu/selection key (step 180), confirm institute's Query Information classification, obtain required content, enter next process after finishing.As getting back to upper level master menu (step 220) by " returning ".
Fourth stage menu directory-travel information be can enter equally and preface formation travel information division successively, tourism organization tabulation, concrete service content cascade menu inquired about.
Enter dynamic view picture (step 190) or static information inquiry picture (step 200) by menu/selection key.As getting back to upper level master menu (step 210) by " returning ".The information inquiry of this system is all-round opening, and master menu and submenu increase and decrease according to need.
Claims (10)
1, a kind of vehicle carried multimedia information inquiry system comprises:
Display device, the output that is used for the executive system data shows;
The digital control device of core connects described display device, the running status of control system;
Audio amplification device connects the digital control device of described core, is used to play television data, and controlled by the digital control device of described core, and described audio amplification device also is connected with loudspeaker;
Power control unit connects digital control device of described core and display device, controls the on off operating mode of described system works power supply and motor vehicle dc supply;
It is characterized in that: this system also comprises a dynamic storage device, connect with the digital control device of core by system's fetch equipment, realize encrypting by special-purpose communication interface between system's fetch equipment and the dynamic storage device, establish multimedia movie data memory unit and interactive browse information material storage unit in the dynamic storage device.
2, vehicle carried multimedia information inquiry system according to claim 1 is characterized in that: described multimedia movie data memory unit subregion stores played in order media file data and shuffle media file data.
3, vehicle carried multimedia information inquiry system according to claim 1, it is characterized in that: described interactive browse information material storage unit is divided into a plurality of memory blocks, each memory block is the menu level domain structure, respectively storing map information inquiry data, hotel information inquiry data, catering information inquiry data and travel information inquiry data.
4, vehicle carried multimedia information inquiry system according to claim 1 is characterized in that: be connected with power control switch on the link circuit of described power control unit and automobile 12V power supply.
5, vehicle carried multimedia information inquiry system according to claim 4, it is characterized in that: described power control switch is the infrared distance measurement switch, its circuit is made of infrared emission circuit and infrared receiving circuit, radiating circuit is formed by connecting by the different pulse square wave-generator of two-stage frequency, the square-wave output signal of prime pulse square wave-generator connects the modulating stage of back level pulse square wave-generator, the pulse signal of back level is decided frequency modulation (PFM) output, and its output terminal connects the infrared light light emitting diode; Infrared receiving circuit connects comparer by infrared integrated receiving tube and constitutes, after receiving by described infrared integrated receiving tube with the infrared signal of human body distance dependent, with comparer relatively, form the switch outputs level signals, by judging the existence of human body, realize break-make control.
6, vehicle carried multimedia information inquiry system according to claim 4, it is characterized in that: described power control switch is infrared hotness teleswitch, its circuit connects polystage amplifier, the window comparator that is connected in parallel and output delay circuit successively by temperature sensor and constitutes, by the infrared sensing human body temperature, judge the existence of human body, realize the control of time-delay break-make.
7, vehicle carried multimedia information inquiry system according to claim 1, it is characterized in that: be connected with taxi empty wagons board control switch on the link circuit of described power control unit and automobile 12V power supply, realize synchro control with the empty wagons board, user mode by the empty wagons board, judge the existence of human body, realize break-make control.
8, a kind of vehicle carried multimedia information inquiry method is characterized in that, described method is carried out following steps:
Dynamic storage device is docked with the system fetch equipment, carries out cryptographic check by system's fetch equipment, by after, system carries out the search of its memory cell content of dynamic storage device, and is that the multimedia movie data shows on display unit with Search Results;
The content in first search played in order media file data storage district during systematic search, if content exists, execution sequence playing program then, and play the content of shuffle media file data continuously; Otherwise directly carry out the program of shuffle media file data;
When system carries out the play multimedia television data, by guidance panel menu/selection key, obtain the memory contents of interactive browse information material storage unit, and show by display device;
9, vehicle carried multimedia information inquiry method according to claim 8, it is characterized in that: by actions menu/selection key, obtain the main menu information of interactive browse information material storage unit menu level memory block respectively, master menu is respectively cartographic information inquiry, hotel information inquiry, catering information inquiry and travel information inquiry, switch by menu and to obtain relevant information respectively, simultaneously by operation return button successively preface return the upper level master menu.
10, vehicle carried multimedia information inquiry method according to claim 9, it is characterized in that: under the master menu environment, by operation upper and lower, left and right button, obtain the submenu content of described menu level storage area stores respectively, obtain the next stage master menu by menu/selection key, the master menu of menu level memory block forms submenu according to following order:
Cartographic information is inquired about successively, and preface forms orientation inquiry, service/food and drink/government organs/bank/hotel/shopping position guide and map detailed annotation cascade menu;
Hotel information is inquired about preface formation area dividing, hotel's name list, hotel service successively and is introduced cascade menu;
Catering information is inquired about successively preface and is formed kind divisions, eating and drinking establishment's name list, specifically serves and introduce cascade menu;
Travel information is inquired about successively, and preface forms travel information division, tourism organization tabulation, concrete service content cascade menu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100781197A CN1308856C (en) | 2004-09-16 | 2004-09-16 | Vehicle carried multimedia information inquiry system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100781197A CN1308856C (en) | 2004-09-16 | 2004-09-16 | Vehicle carried multimedia information inquiry system and method |
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| Publication Number | Publication Date |
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| CN1588333A CN1588333A (en) | 2005-03-02 |
| CN1308856C true CN1308856C (en) | 2007-04-04 |
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| CNB2004100781197A Expired - Fee Related CN1308856C (en) | 2004-09-16 | 2004-09-16 | Vehicle carried multimedia information inquiry system and method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7852669B2 (en) * | 2007-03-16 | 2010-12-14 | Spansion Llc | Division-based sensing and partitioning of electronic memory |
| CN102145683A (en) * | 2011-03-11 | 2011-08-10 | 广东铁将军防盗设备有限公司 | Video recording instrument of vehicle |
| CN103731957A (en) * | 2013-12-24 | 2014-04-16 | 苏州承腾电子科技有限公司 | Empty taxi indicator light controller |
| CN103876288A (en) * | 2014-03-18 | 2014-06-25 | 刘秋明 | Electronic-cigarette tobacco tar atomizing method and electronic-cigarette control circuit |
| US11016543B2 (en) * | 2014-06-04 | 2021-05-25 | Moduware Pty Ltd | Battery-powered platform for interchangeable modules |
| CN106891830A (en) * | 2017-01-23 | 2017-06-27 | 斑马信息科技有限公司 | Control method, control device, mobile unit and transport facility |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0887527A (en) * | 1994-09-16 | 1996-04-02 | Aisin Aw Co Ltd | Position retrieving device |
| CN1494031A (en) * | 2002-11-01 | 2004-05-05 | 刘应龙 | Foreground receiving information treatment method and service device |
| CN1528618A (en) * | 2003-10-17 | 2004-09-15 | 尹少斌 | Vehicular computer mobile internet system electronic registration number three-card global-through |
-
2004
- 2004-09-16 CN CNB2004100781197A patent/CN1308856C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0887527A (en) * | 1994-09-16 | 1996-04-02 | Aisin Aw Co Ltd | Position retrieving device |
| CN1494031A (en) * | 2002-11-01 | 2004-05-05 | 刘应龙 | Foreground receiving information treatment method and service device |
| CN1528618A (en) * | 2003-10-17 | 2004-09-15 | 尹少斌 | Vehicular computer mobile internet system electronic registration number three-card global-through |
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| CN1588333A (en) | 2005-03-02 |
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