KR20100073650A - Apparatus and method of radio/digital multimedia broadcasting playback for vehicle - Google Patents

Apparatus and method of radio/digital multimedia broadcasting playback for vehicle Download PDF

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Publication number
KR20100073650A
KR20100073650A KR1020080132370A KR20080132370A KR20100073650A KR 20100073650 A KR20100073650 A KR 20100073650A KR 1020080132370 A KR1020080132370 A KR 1020080132370A KR 20080132370 A KR20080132370 A KR 20080132370A KR 20100073650 A KR20100073650 A KR 20100073650A
Authority
KR
South Korea
Prior art keywords
dmb
audio signal
broadcast
signal
radio
Prior art date
Application number
KR1020080132370A
Other languages
Korean (ko)
Inventor
조성두
Original Assignee
주식회사 현대오토넷
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 현대오토넷 filed Critical 주식회사 현대오토넷
Priority to KR1020080132370A priority Critical patent/KR20100073650A/en
Publication of KR20100073650A publication Critical patent/KR20100073650A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4398—Processing of audio elementary streams involving reformatting operations of audio signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R2011/0294—Apparatus with multi-functionalities, e.g. radio and telephone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0016—Inter-integrated circuit (I2C)
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/11—Aspects of broadcast communication characterised by the type of broadcast system digital multimedia broadcasting [DMB]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The present invention discloses a vehicle radio / DMB reproducing apparatus and method. In accordance with an aspect of the present invention, a vehicle radio / DMB reproducing apparatus includes: a tuner configured to receive at least one broadcast of a radio and a digital multimedia broadcasting (DMB); A video interface unit outputting the broadcast video signal received from the tuner in an image form; A signal processor for converting the broadcast audio signal received from the tuner into a digital audio signal having a predetermined standard; And a MOST interface unit converting the digital audio signal into a signal of a Media Oriented Systems Transport (MOST) protocol and transmitting the same through a MOST network.

Description

Apparatus and Method of Radio / Digital Multimedia Broadcasting Playback for Vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio / digital multimedia broadcasting (DMB) reproducing apparatus, and more particularly, to a vehicle radio / DMB reproducing apparatus and method capable of providing a digital audio interface through an analog audio interface and a media-oriented systems transport (MOST) network. It is about.

Recently, with the development of the electronics industry and the automobile industry, the trend is to install many electronics in vehicles. Drivers are enjoying their hobby with various multimedia devices such as audio / video systems, DMB receivers and navigation terminals.

The car radio / DMB tuner, which is one of such multimedia devices, is connected to a speaker and an analog cable, and transmits a multichannel audio signal to the speaker through an analog cable for reproduction. However, the analog cable has a problem in that the wiring becomes complicated as the channel is increased, and the sound quality is deteriorated due to noise and electromagnetic waves generated due to the complicated wiring interference.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide an apparatus and method for a vehicle radio / DMB playback capable of providing an interface for digital audio signals through a Media Oriented Systems Transport (MOST) network together with an interface for a multichannel analog audio signal. In providing.

Another object of the present invention is to provide a vehicle radio / DMB reproducing apparatus and method capable of preventing deterioration of image quality that may occur when compressing and decompressing a video by transmitting only an audio signal except a video signal through a MOST network.

In accordance with an aspect of the present invention, a vehicle radio / DMB reproducing apparatus includes: a tuner configured to receive at least one broadcast of a radio and a digital multimedia broadcasting (DMB); A video interface unit outputting the broadcast video signal received from the tuner in an image form; A signal processor for converting the broadcast audio signal received from the tuner into a digital audio signal having a predetermined standard; And a MOST interface unit converting the digital audio signal into a signal of a MOST protocol and transmitting the same through a MOST (Media Oriented Systems Transport) network.

According to another aspect of the present invention, there is provided a method for reproducing a vehicle radio / DMB, comprising: receiving at least one broadcast of radio and digital multimedia broadcasting (DMB); Receiving the video signal of the received broadcast and outputting it in an image form; Receiving an audio signal of the received broadcast and converting the digital signal into a digital audio signal having a predetermined standard and outputting the converted audio signal; And converting the digital audio signal into a signal of the MOST protocol and transmitting it through a MOST network.

According to the present invention, by transmitting only the audio signal except the video signal through the MOST (Media Oriented Systems Transport) network to prevent image quality degradation that may occur when the video compression and decompression, and to provide a digital audio interface with an analog audio interface There is an effect that can increase the optional specification of the vehicle.

Hereinafter, a vehicle radio / DMB reproducing apparatus according to an embodiment of the present invention will be described with reference to FIG. 1.

1 is a block diagram showing a vehicle radio / DMB reproducing apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the vehicle radio / DMB reproducing apparatus 10 according to an exemplary embodiment of the present invention uses a tuner 110, an image interface unit 120, a signal processor 130, and a MOST interface unit 140. Include.

The tuner 110 receives at least one broadcast of radio and digital multimedia broadcasting (DMB). In detail, the tuner 110 includes a radio tuner 112 and a DMB tuner 111. The radio tuner 112 is air-conditioned to broadcasting frequencies such as AM (Amplitude Modulation), FM (Frequency Modulation), and satellite radio. And receives a radio broadcast, and the DMB tuner 111 receives a DMB broadcast by coordinating to a T-DMB (terrestrial wave DMB) broadcast frequency. Here, the output of the radio tuner 112 may be an analog audio signal of an intermediate frequency, and the output of the DMB tuner 111 may be a digital audio signal of a DMB standard.

The video interface unit 120 receives a video signal of a broadcast from the tuner 110 and outputs the video signal. In this case, the video signal of the broadcast may be a DMB broadcast or a signal for expressing a text broadcast of a digital radio.

In this case, the video interface unit 120 includes a video amplifier 121 for amplifying the broadcast video signal received from the tuner 110 and a video connector 122 for transmitting the amplified video signal to the display unit 150. . Thereafter, the amplified video signal may be displayed to the user through the display unit 150.

The signal processor 130 converts an audio signal of a DMB broadcast and a radio broadcast received from the tuner 110 into a digital audio signal of a predetermined standard. Here, the predetermined standard may be at least one of I2S (Inter-IC Sound), SPI (Serial Peripheral Interface) and PCM (Pulse Code Modulation), but FIG. 1 illustrates an example of using an I2S interface.

In addition, the signal processor 130 converts the audio signal of the DMB broadcast and radio broadcast from the tuner 110 into a multi-channel analog audio signal and transmits the multi-channel analog audio signal to the speaker 170 through an analog cable. Here, since the output of the radio tuner 112 is an analog audio signal of an intermediate frequency, the signal processor 130 converts the analog audio signal of the intermediate frequency into a multi-channel analog audio signal of a baseband. In FIG. 1, a case of using four channels is illustrated as an example. In this case, the multi-channel analog audio signal may be amplified through the audio amplifier 160 and then transmitted to the analog cable in consideration of attenuation during transmission and reception.

The MOST interface unit 140 converts the digital audio signal received from the signal processing unit 130 into a signal of the MOST protocol and transmits it through a MOST (Media Oriented Systems Transport) network.

The MOST interface unit 140 includes a MOST converter 141 for converting a digital audio signal into a signal of the MOST protocol, and a MOST connector 142 for transferring the converted MOST protocol signal to the MOST network.

As described above, the radio / DMB reproducing apparatus 10 according to the present invention can transmit analog audio signals and digital audio signal outputs using a MOST network, thereby improving sound quality. In addition, the present invention transmits the audio signal and the video signal through different interfaces, thereby preventing problems such as distortion of image quality and degradation of image quality that may occur during video compression and decompression.

Hereinafter, the radio / DMB reproduction method of the vehicular radio / DMB reproducing apparatus 10 will be described. 2 is a flowchart illustrating a vehicle radio / DMB reproducing method according to an embodiment of the present invention.

Referring to FIG. 2, first, a vehicle radio / DMB reproducing apparatus 10 receives at least one broadcast of radio and digital multimedia broadcasting (DMB) according to a user's selection (S210).

Subsequently, the vehicle radio / DMB reproducing apparatus 10 receives the video signal of the received radio broadcast or DMB broadcast and converts the video signal into a form that can be output by the display unit 150 (S220).

In addition, the vehicle radio / DMB reproducing apparatus 10 receives the audio signal of the received radio broadcast or DMB broadcast and converts it into a digital audio signal of a predetermined standard (S230).

The vehicle radio / DMB reproducing apparatus 10 converts the digital audio signal into a signal of the MOST protocol and transmits it through the MOST network (S240).

Thereafter, the image converted into a form that can be output by the display unit 150 and the signal of the MOST protocol transmitted through the MOST network are synchronized and reproduced (S250).

Meanwhile, the vehicle radio / DMB reproducing apparatus 10 may convert the broadcast audio signal into an analog audio signal as well as a digital audio signal and output the analog audio signal.

While the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the above-described embodiments. Those skilled in the art will appreciate that various modifications, Of course, this is possible. Therefore, the protection scope of the present invention should not be limited to the above-described embodiment, but should be defined by the following claims.

1 is a block diagram showing a vehicle radio / DMB reproducing apparatus according to an embodiment of the present invention.

2 is a flowchart illustrating a vehicle radio / DMB reproducing method according to an embodiment of the present invention.

Claims (10)

A tuner for receiving at least one broadcast of radio and digital multimedia broadcasting (DMB); A video interface unit outputting the broadcast video signal received from the tuner in an image form; A signal processor for converting the broadcast audio signal received from the tuner into a digital audio signal having a predetermined standard; And The MOST interface unit converts the digital audio signal into a signal of a Media Oriented Systems Transport (MOST) protocol and transmits it through a MOST network. Vehicle radio / DMB playback device comprising a. The method of claim 1, wherein the tuner, A radio tuner for receiving the radio broadcast in cooperation with a radio broadcast frequency; And A DMB tuner that receives the DMB broadcast in cooperation with a frequency for DMB broadcast Vehicle radio / DMB playback device comprising a. The display apparatus of claim 1, wherein the video interface unit comprises: A video amplifier for amplifying the video signal; And A video connector for transferring the amplified video signal to a display unit Car radio / DMB reproducing apparatus comprising a. According to claim 1, The predetermined standard is, And at least one of inter-IC sound (I2S), serial peripheral interface (SPI), and pulse code modulation (PCM). The method of claim 1, wherein the signal processing unit, And converting the broadcast audio signal into a multi-channel analog audio signal and outputting the same through an analog cable. The method of claim 5, And an audio amplifier for amplifying the multi-channel audio signal. The method of claim 1, wherein the MOST interface unit, A MOST converter for converting the digital audio signal into a signal of the MOST protocol; And MOST connector for transmitting the signal of the converted MOST protocol to the MOST network Car radio / DMB reproducing apparatus comprising a. Receiving at least one broadcast of radio and digital multimedia broadcasting (DMB); Receiving the video signal of the received broadcast and outputting it in an image form; Receiving the audio signal of the received broadcast and converting the digital signal into a digital audio signal of a predetermined standard; And Converting the digital audio signal into a signal of a Media Oriented Systems Transport (MOST) protocol and transmitting it through a MOST network Vehicle radio / DMB playback method comprising a. The method of claim 8, Converting the received broadcast audio signal into an analog audio signal and outputting the analog audio signal Car radio / DMB playback method further comprising. The method of claim 8, wherein the predetermined standard, And at least one of inter-IC sound (I2S), serial peripheral interface (SPI), and pulse code modulation (PCM).
KR1020080132370A 2008-12-23 2008-12-23 Apparatus and method of radio/digital multimedia broadcasting playback for vehicle KR20100073650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080132370A KR20100073650A (en) 2008-12-23 2008-12-23 Apparatus and method of radio/digital multimedia broadcasting playback for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080132370A KR20100073650A (en) 2008-12-23 2008-12-23 Apparatus and method of radio/digital multimedia broadcasting playback for vehicle

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KR20100073650A true KR20100073650A (en) 2010-07-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160024017A (en) * 2014-08-22 2016-03-04 현대모비스 주식회사 Apparatus and method for vehicles for processing audio data using ethernet with avb
US9626953B2 (en) 2014-06-05 2017-04-18 Hyundai Motor Company Vehicle audio system and noise removal method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9626953B2 (en) 2014-06-05 2017-04-18 Hyundai Motor Company Vehicle audio system and noise removal method thereof
KR20160024017A (en) * 2014-08-22 2016-03-04 현대모비스 주식회사 Apparatus and method for vehicles for processing audio data using ethernet with avb

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