KR100793632B1 - Automotive media server platform based on module and car media system using the same - Google Patents

Abstract

A module-based car media server platform and a car media system using the same are provided to shorten a development period by modularizing each function and interconnecting the modularized functions through a common interface, develop various products by connecting other modularized functions, and facilitate debugging in product development by using the common interface. A plurality of function modules(150a-150f) respectively performs a preset function. A human interface(110) generates a control signal according to user input. A controller(120) controls operation of the function module corresponding to the control signal based on the interface through a common bus. A multiplexer(130) multiplexes and outputs a result performed through the function module by control of the controller. The common bus includes a device selection signal for selecting the function module, a device write signal for writing data to the selected function module, a device read signal for reading the data from the selected function module, a device standby signal for transferring a standby state to the controller from the function module, a device interrupt signal, a data bus signal, and an address bus signal.

Description

Module-based automotive media server device and automotive media system using the same {AUTOMOTIVE MEDIA SERVER PLATFORM BASED ON MODULE AND CAR MEDIA SYSTEM USING THE SAME}

1 is a block diagram illustrating an exemplary configuration of a module based automotive media server device in accordance with the present invention.

2 illustrates an exemplary configuration of a common bus interface in a module based automotive media server device in accordance with the present invention.

3 is an exemplary block diagram of an automotive media system using a module based automotive media server device in accordance with the present invention.

4 is another exemplary block diagram of an automotive media system using a module-based automotive media server device in accordance with the present invention.

5 illustrates a software hierarchy of an automotive media system according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: car media server device 110: human interface unit

120: control unit 130: multiplexer

140: user output unit 150: function module

The present invention relates to a module-based car media server device and a car media system using the same. More specifically, in order to make full use of existing devices, each module is modularized and each modular function is interconnected through a common interface. It is possible to shorten the development period of the automobile device by configuring it, and to develop various products through connection with other modularized functions, and to use the common interface. The present invention relates to a media server device and a vehicle media system using the same.

Devices installed in automobiles are becoming more and more diverse as multimedia devices as well as existing control devices. When developing a device installed in such a vehicle, a new design must be performed according to each function. In addition, the devices installed in the vehicle are expected to be designed to be connected to each other through a network to enable organic operation with each other.

For example, when designing a multimedia reproducing apparatus installed in an automobile and playing media, the Internet connection function such as wireless LAN, mobile communication network connection such as CDMA, received data storage function, decoding function supporting various multimedia codecs, DMB broadcasting Various functions such as reception function, MOST network connection function, human interface function, etc. should be selected and designed according to the purpose, and implementation should be performed accordingly.

However, designing and implementing each function according to such a purpose delays the development period and makes it difficult to release a product within a time point suitable for a market situation.

Due to these problems, especially when developing a vehicle media server device that comprehensively performs such various multimedia requirements and network support in an automobile, the need for an efficiently configured platform is increasing.

An object of the present invention is to modularize each function in order to make the best use of existing devices and to configure each modular function to be interconnected through a common interface, which can shorten the development period of the automotive device and compare it with other modular functions. It is possible to develop a variety of products through connection and to provide a module-based automotive media server device that is easy to debug during product development by using a common interface.

Another object of the present invention to provide a vehicle media system using the module-based vehicle media server device.

In order to achieve the above technical problem, the present invention provides a module-based vehicle media server device, at least one function module for performing a predetermined function, a human interface unit for generating a control signal according to a user input, and the control signal Module-based including a control unit for controlling the operation of the corresponding function module based on an interface through a common bus, and a multiplexer for multiplexing and outputting the results performed through the one or more function modules under the control of the controller Provides a car media server device.

In the module-based vehicle media server device according to the present invention, the common bus, the device selection signal for performing the selection of the function module in the control unit, and the control unit performs data recording for the selected function module A device write signal, a device read signal for performing data reading from the selected function module by the controller, a device wait signal for transmitting a standby state from the selected function module to the controller, The apparatus may include an interrupt signal for transmitting an interrupt to the controller, a data bus signal that is data transmitted between the controller and the function module, and an address bus signal transmitted from the controller to the function module.

In the module-based vehicle media server apparatus according to the present invention, the common bus includes a MOSI signal which is a transmission signal from the control unit to the function module, a MISO signal which is a transmission signal from the function module to the control unit, The control unit may include a slave selection signal for selecting the function module from the control unit and a clock signal transmitted from the control unit to the function module.

In addition, in the module-based vehicle media server apparatus according to the present invention, the common bus may include a differential analog bus for performing data transmission and reception through the differential analog interface between the control unit and the function module.

In addition, in the module-based vehicle media server apparatus according to the present invention, the control unit may simultaneously control two or more of the function modules in response to the control signal.

In addition, the module-based vehicle media server apparatus according to the present invention, may further include a user output unit for outputting the output signal of the multiplexer to the user.

In addition, in the module-based vehicle media server device according to the present invention, any one of the functional module may perform transmission and reception of multimedia data.

In addition, in the module-based vehicle media server apparatus according to the present invention, any one of the functional modules may perform signal processing of the multimedia data.

The present invention also provides a vehicle media system including a plurality of module-based vehicle media server apparatus according to the present invention described above.

In the vehicle media system according to the present invention, each of the vehicle media server devices includes the function module supporting MOST communication, and the plurality of vehicle media server devices are provided through the function module supporting the MOST communication. Data can be sent or received with each other.

In addition, in the vehicle media system according to the present invention, any one or more of the vehicle media server apparatus includes the function module supporting near field communication, and the vehicle media system supports the near field communication. Data may be received from an external terminal through the function module.

In the vehicle media system according to the present invention, the short range wireless communication may be either wireless LAN or Bluetooth.

Hereinafter, a module-based vehicle media server apparatus of the present invention and a vehicle media system using the same will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an exemplary configuration of a module-based automotive media server device according to the present invention.

As shown, the module-based vehicle media server apparatus 100 according to the present invention includes a human interface unit 110, a controller 120, a multiplexer 130, and one or more functional modules 150a to 150f. do. In addition, in the module-based vehicle media server apparatus 100 according to the present invention, it may further include a user output unit 140.

The human interface unit 110 generates a control signal according to a user input. For example, a user may select one or more function modules from one or more function modules 150a to 150f connected to the module-based vehicle media server apparatus 100 according to the present invention and receive a multimedia service through the corresponding function module. 110). For example, the human interface unit 110 may be configured as a keypad including a button type switch or a display device having a touch screen type input interface.

The controller 120 controls the operation of the one or more function modules 150a to 150f based on the interface using the illustrated common bus in response to the control signal generated by the human interface unit 110. In this case, the control unit 120 controls the function module 150b when receiving data through one function module, for example, a wireless LAN, in response to the control signal. However, for example, in the case of receiving a control signal for transmitting a DMB and transmitting it to another device through the MOST network in a vehicle, the function module 150d for receiving the DMB and the function module 150a for transmitting the MOST are simultaneously Can be controlled. The number of such controllable function modules 150a to 150f may vary in response to the control signal.

The multiplexer 130 multiplexes and outputs a result performed by the control of the control unit 120 in one or more function modules 150a to 150f.

The function modules 150a to 150f perform a predetermined function.

For example, as shown, the function module 150a may be designated to perform a connection function for a media oriented systems transport (MOST) network, which is a standard communication method in a vehicle. MOST is an optical-based network protocol aimed at high-performance multimedia data transmission, especially among automotive manufacturers and component manufacturers as a technology for network implementation of automotive display devices, telematics devices, and multimedia playback devices.

MOST network uses POF (Plastic Optical Fiber) to minimize the problems caused by electromagnetic interference (EMI), simple network structure, easy network design and maintenance, only need two lines of POF and power line Weight can be reduced, and relatively large amount of data can be transmitted at 24.8 Mbps (24.8 Mbps of 15 CD-quality audio data or 15 MPEG1 channel data), and 50 Mbps transmission is planned to be implemented later. Since it is possible to transmit the data at high speed, it is expected that its application will be extended in the future, especially in the network configuration inside the vehicle.

Accordingly, in the module-based vehicle media server apparatus 100 according to the present invention, when the function supporting the MOST is included as the function module 150a, efficient communication with devices in other vehicles may be performed.

As shown, the function module 150b may be designated to support data communication via a wireless LAN. For example, when the vehicle media server apparatus 100 is designed to perform data communication by wirelessly connecting to a wireless LAN access point in a vehicle, the functional module 150b may be included.

Also, as shown, the function module 150c may support DAB modem function, and the function module 150d may be designated to support the DMB decoding function. In particular, the DMB function is to perform multimedia broadcasting reception in a mobile situation, and when the vehicle media server apparatus 100 is designed to receive a DMB broadcasting in a vehicle and provide the same to a user, such a function module 150c to 150d. ) May be included.

As shown, the function module 150e may be designated to support DivX decoding. That is, when the automotive media server apparatus 100 is designed to decode DivX standard multimedia files in a vehicle and provide the same to a user, the functional module 150e may be included.

Various other functional modules may be included. For example, a functional module such as a function module for playing a DVD or a function module for performing data storage may be selectively included in the design of the module-based vehicle media server apparatus 100 according to the present invention.

The number of functional modules included in the module-based vehicle media server apparatus 100 according to the present invention may be selected according to the purpose of designing. For example, it may be designed to include two functional modules, or may be designed to include five functional modules. However, it should be noted that the module-based vehicle media server apparatus 100 according to the present invention including such a functional module is capable of communicating with each other, for example, via a MOST network, and thus, may be configured as a media system for automobiles. do.

In addition, in the module-based vehicle media server apparatus 100 according to the present invention, it may further include a user output unit 140.

The user output unit 140 outputs the output signal of the multiplexer 130 to the user. For example, it is possible to output in the form of audio or video.

Meanwhile, in the module-based vehicle media server apparatus 100 according to the present invention, the common interface between the control unit 120, the function modules 150a to 150f, and the multiplexer 130 may be used and function module 150a. According to the communication method supported by the through 150f) may include a variety of interfaces as follows.

2 is a diagram illustrating an exemplary configuration of a common bus interface in a module-based vehicle media server device according to the present invention.

As shown, the common bus may first contain a parallel bus configuration.

Such a parallel bus is, for example, a device selection signal nCS that performs a selection for the function module 150A in the control unit 120 and a device recording that performs data recording for the function module 150A selected in the control unit 120. Signal nWE, a device for performing data reading from the function module 150A selected by the controller 120 and a device for transmitting a standby state from the selected function module 150A to the controller 120 The standby signal nRDY, the device interrupt signal nINT for transmitting the interrupt generated from the selected function module 150A to the control unit 120, and the data transmitted between the control unit 120 and the function module 150A. The data bus signal DATA and the address bus signal ADDR transmitted from the controller 120 to the function module 150A may be provided.

When based on such a parallel bus, the device may have n device selection signals nCS and n device interrupt signals nINT corresponding to a function module, and k-bit data bus signals DATA according to data transmission bits. It can have an address bus of m bits according to the address setting.

As shown, the common bus may also include a serial bus configuration.

The serial bus is, for example, a Master Output Slave Input (MOSI) signal, which is a transmission signal from the control unit 120 to the function module 150B, and a Master Input Slave Output (MISO), which is a transmission signal from the function module 150B to the control unit 120. Signal, a slave selection signal nSS for selecting the function module 150B in the controller 120, and a clock signal CLK transmitted from the controller 120 to the function module 150B. It can have

When based on the serial bus, the slave bus may have q slave selection signals nSS corresponding to the number of slaves, that is, the function modules.

As shown, the common bus may also include a differential analog bus configuration.

The differential analog bus may have a form having DP and DN performing transmission based on a differential signal between the control unit 120 and the function module 150C as shown.

In addition, in the module-based vehicle media server apparatus 100 according to the present invention, it may further include a user output unit 140.

The user output unit 140 outputs the output signal of the multiplexer 130 to the user. For example, it is possible to output in the form of audio or video.

When using the module-based vehicle media server apparatus according to the present invention described with reference to Figures 1 to 2 can be easily implemented according to the vehicle media system according to the use, the time required for implementation is also reduced.

3 is an exemplary block diagram of an automotive media system using a module-based automotive media server device according to the present invention.

As shown in FIG. 2, a vehicle media system for receiving and processing DMB data using two module-based vehicle media server apparatuses 100a and 100b according to the present invention is constructed. The automotive media system according to the present invention may constitute a system for performing various functions using the module-based vehicle media server apparatus according to the present invention including other functional modules as described above.

The first automotive media server apparatus 100a is a functional module 150aa or 150ab, and includes a DMB modem module 150aa and a MOST network module 150ab. The first vehicle media server apparatus 100a performs reception of DMB data.

The second vehicle media server apparatus 100b is a functional module 150ba or 150bb and includes a MOST network module 150ba and a DMB decoder module 150bb. The second vehicle media server apparatus 100b performs decoding of the DMB data received through the first vehicle media server apparatus 100a. In this case, the MOST network module 150ab and the MOST network module 150ba are connected to each other using POF.

The operation of the vehicle media system shown in FIG. 3 is as follows.

First, terrestrial or satellite DMB data is transmitted through a DMB broadcasting network. Thereafter, the user selects the DMB channel through the human interface unit 110a, for example, a touch screen or a keypad, and the controller 120b transmits the channel information selected by the user to the DMB modem module 150aa through the common bus.

The DMB modem module 150aa receives the DMB data based on this, and the received data is transmitted to the MOST network module 150ab under the control of the controller 120b.

Thereafter, the DMB data is transmitted through the MOST network between the MOST network module 150ab and the MOST network module 150ba and is transmitted to the DMB decoder module 150bb through a common bus under the control of the controller 120b.

The DMB decoder module 150bb decodes the DMB data into a video and audio signal and transmits the same to the multiplexer 130b. The data selected by the multiplexer 130b is output from the display 140b.

In addition, if a wireless LAN module is included without including the MOST network module 150ab and the MOST network module 150ba as a functional module, it is also possible to configure DMB data to be transmitted and received by wireless communication.

As described above, the automotive media system according to the present invention may configure a system for performing various functions using the module-based automobile media server apparatus according to the present invention including other functional modules.

4 is another exemplary block diagram of an automotive media system using a module-based automotive media server device according to the present invention.

As shown in the drawing, the module-based vehicle media server apparatus 100A to 100C according to the present invention configures a vehicle media system that receives, stores, decodes, and outputs multimedia data through a wireless LAN.

The third automotive media server apparatus 100A is a functional module 150AA, 150AB, and includes a wireless LAN module 150AA and a MOST network module 150AB. The third vehicle media server apparatus 100A receives multimedia data using a wireless LAN from an external terminal.

The fourth automobile media server apparatus 100B is a functional module 150BA, 150BB, and includes a MOST network module 150BA and a data storage module 150BB. The fourth vehicle media server apparatus 100B stores the multimedia data received through the third vehicle media server apparatus 100A. In this case, the MOST network module 150AB and the MOST network module 150BA are connected to each other using a POF.

The fifth automobile media server apparatus 100C is a functional module 150CA, 150CB, and includes a MOST network module 150CA and a DivX decoder module 150CB. The fifth automobile media server apparatus 100C performs decoding of multimedia data received through the third automobile media server apparatus 100A or multimedia data stored in the fourth automobile media server apparatus 100B, in particular, in the DivX format. . In this case, the MOST network module 150BA and the MOST network module 150CA are connected to each other using a POF.

Through such a configuration, it is possible to easily implement an automotive media system that performs multimedia decoding in DivX format, and decoding other multimedia data of other standards can also be easily performed by adding a corresponding function module.

Since the vehicle media server device of the vehicle media system is intended to be disposed in a vehicle, the vehicle media server device preferably includes a MOST network module and performs transmission and reception of data using the same, but may use a wireless LAN or the like. In addition, it is also possible to receive a multimedia data from an external terminal using a wireless LAN or Bluetooth or other short-range wireless communication standards.

5 illustrates an exemplary software hierarchy of an automotive media system in accordance with the present invention.

As shown in the figure above, there is a common network service layer (Common Network Service Layer) that processes services (or functions) commonly applied to the network field, and a MOST specific service layer (processing a specific service according to each communication method) Specific Service Layer, Wireless Specific Service Layer, DMB Specific Service Layer, and the like exist.

In addition, the MOST network layer and the MOST device driver are arranged in correspondence with the MOST specific service layer, and the wireless network layer and the wireless device driver are wireless specific services. A DMB Network Layer and a DMB Device Driver are disposed corresponding to the DMB specific service layer.

In addition, a common multimedia service layer (Common Multimedia Service Layer), which is a layer for processing common services related to multimedia services, is disposed at an upper layer, and correspondingly, a DMB specific service layer, which is a layer according to a specific standard such as DMB or DivX, is correspondingly installed. Layer or DivX Specific Service Layer is disposed, and correspondingly, a DMB Decoder Specific Layer or a DivX Decoder Specific Layer is disposed.

The top application layer can also be implemented using the functions defined in these lower layers.

In addition, the Common Bus Adaptation Layer, located at the lowest layer, actually implements a firmware configuration for passing data through a common interface: parallel bus, serial bus, or differential analog bus.

This software hierarchy is merely exemplary, and the actual software hierarchy may be modified by the use of the vehicle media system according to the present invention and the design thereof.

Although the configuration of the present invention has been described in detail, it is only for illustrating the present invention, and the protection scope of the present invention is not limited thereto, and the protection scope of the present invention is defined through the description of the claims.

As described above, according to the present invention, in order to make full use of the existing devices, each function is modularized and each modular function is configured to be interconnected through a common interface, thereby shortening the development period of the automotive device, and other modularization. It is possible to develop various products through connection with the built-in functions, and debugging at the time of product development is easy by using a common interface.

Claims (12)

Module-based automotive media server device One or more function modules that perform predetermined functions, A human interface unit generating a control signal according to a user input; A controller for controlling an operation of the function module corresponding to the control signal based on an interface through a common bus; A multiplexer for multiplexing and outputting a result performed through the one or more function modules under control of the controller Module-based car media server device comprising a. The method of claim 1, wherein the common bus, A device selection signal for performing selection on the function module in the controller; An apparatus recording signal for performing data recording on the selected function module by the controller; A device read signal for performing data read from the selected function module by the control unit; A device standby signal for transmitting a standby state from the selected function module to the controller; A device interrupt signal for transmitting an interrupt generated from the selected function module to the controller; A data bus signal which is data transmitted between the controller and the function module; Address bus signal transmitted from the controller to the function module Module-based automotive media server device comprising a. The method of claim 1, wherein the common bus, A MOSI signal which is a transmission signal from the control unit to the function module; A MISO signal which is a transmission signal from the function module to the control unit, A slave selection signal for selecting the function module in the controller; Clock signal transmitted from the controller to the function module Module-based automotive media server device comprising a. The method of claim 1, wherein the common bus, And a differential analog bus for performing data transmission and reception through the differential analog interface between the control unit and the function module. The method of claim 1, And the control unit controls two or more of the function modules simultaneously in response to the control signal. The method of claim 1, User output unit for outputting the output signal of the multiplexer to the user Module-based car media server device further comprising. The method of claim 1, Any one of the functional modules is a module-based automotive media server device that performs the transmission and reception of multimedia data. The method of claim 1, Any one of the functional modules is a module-based automotive media server device that performs the signal processing of the multimedia data. An automotive media system comprising a plurality of module-based automotive media server devices according to any one of claims 1 to 8. The method of claim 9, Each of the vehicle media server devices includes the function module supporting MOST communication; And said plurality of vehicle media server apparatuses transmits or receives data to each other via the function module supporting the MOST communication. The method of claim 9, At least one of the vehicle media server apparatus includes the function module for supporting near field communication. The automotive media system receives data from an external terminal through the function module supporting the short range wireless communication. The method of claim 11, The near field communication is a vehicle media system of any one of a wireless LAN or Bluetooth.

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