KR20030014964A - wireless audio/video system for vehicle - Google Patents

Abstract

PURPOSE: A wireless image/voice output device for a vehicle is provided to remove the cable lining and arrangement work by employing the wireless communication system and reduce the installation time, wherein the short circuit of the cables is removed. CONSTITUTION: A wireless image/voice output device for a vehicle includes a display unit and an image/voice generation control unit. The display unit(10) includes a selection control input part(11) for selecting one of a plurality of image/voice devices, an image/voice data receiving part(15) for wirelessly receiving and detecting image/voice signals from the selected one, a first control part(12) for outputting predetermined control signals according to a selection signal, a display part(14) for outputting images and voices by the output signal from the image/voice signal receiving part according to the control signal, and a control signal transmitting part(13) for wirelessly transmitting the control signal output from the first control part after modulation. The image/voice generation control unit(20) includes a control signal receiving part for wirelessly receiving and detecting the control signal, a second control part(22) for outputting predetermined control signals according to an output signal from the receiving part, an image/voice device part(23) having the selected one, an input converting switch(24) for converting the image/voice signals of the selected one by the control signal of the second control part, and an image/voice data transmitting part(25) for modulating the image/input data input by the switch conversion and transmitting the modulated data to the receiving part.

Description

Wireless video / audio output device for vehicle {wireless audio / video system for vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless video / audio output device for a vehicle. In particular, the video and audio signals of an audio / video system of a vehicle can be wirelessly transmitted / received without a cable and displayed on the display device. And a wireless video / audio output device for a vehicle wirelessly connected to a control device.

In general, automotive technology is diversifying as time goes by in the era of Car Electronics, which adds various advanced electronic devices to internal machinery.

In other words, a new system industry called Mechatronics, which is a compound word of mechanical engineering and electronics, which organically combines the power function, which is the main function of mechanism, with the information control function of mechanical electronics, is leading the automobile technology revolution. .

This is called Car Electronics technology, which has evolved in line with the needs of users who want to be safer and more comfortable, and the social needs of cleaner and quieter.

In the 1990s, Car Electronics technology exceeded original expectations and rapidly expanded its adoption, and various new technologies have been developed. Above all, the reasons for this are the seriousness of the global environment, the improvement of safety awareness, the diversification of user's needs, and the incompatibility of exhaust gas purification and engine output, the body weight and safety, the improvement of comfort and quality, This is because cost savings can be optimized by technological advances in Electronics.

The advancement of Car Electronics is accelerating due to the high value-added competitiveness of automobile makers and the competition for securing product competitiveness. Car makers, auto parts makers, and electronic makers are fostering this field by strengthening cooperative relationships. It is likely to emerge as a key factor in automotive competitiveness.

Examples of electronic devices used in automobiles in recent years include navigation systems (satellite navigation systems), continuously variable transmissions (CVT), vehicle speed limitations using satellites, vehicle rain sensors, intelligent traffic control systems, electronic driving stabilization devices, and night vision. Research is being actively conducted on the number of such things as Night Vision, Fuzzy Control Automatic Transmission, Smart Airbag, and Functional Safety Glass.

In addition, there is an audio / video system that allows users to access various audio and visual information in a vehicle cabin as a device that is currently employed and used.

However, in the case of such an audio / video system, the method of connecting the output of the video / audio signal of a video generating device (VTR, DVD, etc.) to the video display device using a cable is difficult. There have been problems such as poor workability and installation time.

In addition, there was a problem that the audio / video system can not be used at all when the cable and short circuit.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in particular, the display device and the control device can be wirelessly displayed so that video and audio signals of an audio / video system of a vehicle can be wirelessly transmitted / received and displayed on the display device. The purpose is to solve the problem of using a cable by connecting and sending data.

SUMMARY OF THE INVENTION An object of the present invention is a display device having a built-in FM transmitter, comprising: a selection control input unit for selecting a specific device from a plurality of video / audio devices; A video / audio data receiver for wirelessly receiving and detecting video / audio data of the specific device; A first control unit which receives the selection signal and outputs a predetermined control signal; A display unit which receives an output signal of the video / audio data receiver and outputs a video and an audio by the control signal; A display device including a control signal transmitter for modulating a specific device control signal of the first controller and wirelessly transmitting the signal;

A control signal receiver for wirelessly receiving and detecting a specific device control signal of the control signal transmitter; A second controller which receives an output signal of the control signal receiver and outputs a predetermined control signal; A video / audio device unit having a specific device selected by the control signal of the second control unit; An input switching switch for switching the video / audio signal of the selected device by a control signal of the second control unit; And a video / audio generation control device including a video / audio data transmitter for modulating the video / audio data received by the switching of the input switch and wirelessly transmitting the modulated signal to the video / audio data receiver. This is achieved by

1 is a circuit block diagram of a wireless video / audio output device according to the present invention.

Figure 2 is a block diagram showing another embodiment of the video / audio device portion of the present invention

-Explanation of symbols for the main parts of the drawings-

11: selective control input unit 12: first control unit

13: control signal transmitter 14: display unit

15: video / audio data receiver 21: control signal receiver

22: second control unit 23: video / audio device

24: input switch 25: video / audio data transmitter

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a circuit block diagram of a wireless video / audio device according to the present invention, and FIG. 2 shows another embodiment of the video / audio device part of the present invention.

The present invention provides a display device having a built-in FM transmitter, comprising: a selection control input unit 11 for selecting a specific device from a plurality of video / audio devices; A video / audio data receiver 15 for wirelessly receiving and detecting video / audio data of the specific device; A first controller 12 which receives the selection signal and outputs a predetermined control signal; A display unit 14 which receives an output signal of the video / audio data receiver 15 and outputs video and audio by the control signal; A display device 10 including a control signal transmitter 13 for modulating a specific device control signal of the first controller 12 and transmitting wirelessly;

A control signal receiver 21 for wirelessly receiving and detecting a specific device control signal of the control signal transmitter 13; A second control unit 22 which receives an output signal of the control signal receiving unit 21 and outputs a predetermined control signal; A video / audio device unit 23 having a specific device selected by the control signal of the second control unit 22; An input switching switch 24 for switching the video / audio data of the selected device by the control signal of the second control unit 22; And a video / audio data transmitter 25 for modulating the video / audio data received by the switching of the input switching switch 24 and wirelessly transmitting the modulated signal to the video / audio data receiver 15. It consists of video / audio generation control device.

The selection control input unit 11 may be integrally configured like a keypad or separately configured like a remote controller. Transmission and reception antennas for transmitting and receiving radio signals are connected to the video / audio data transmitter 25 and the receiver 15, the control signal transmitter 13, and the receiver 21, respectively, and are electrically connected thereto.

In addition, the wireless transmission frequency of the video / audio data transmitter 25 preferably uses a 2.4 GHz or 900 MHz band, which is a frequency for short-range wireless communication. In particular, the control signal transmitter 13 uses an FM transmitter, but its wireless transmission frequency is preferably used in a 50-100 MHz band much lower than 2.4 GHz. The reason is to use the original FM transmitter when not sending control signals and to send control signals using FM transmitters when sending control signals. In order to avoid the FM frequency band 88MHz-107MHz, the rather low range 50MHz-100MHz is used.

That is, the FM or FM modulation and demodulation is performed using the 2.4 GHz or 900 MHz frequency band for transmitting / receiving video / audio data, and the FM and FM demodulation is used using the 50-100 MHz frequency band for transmitting and receiving control signals. do.

In addition, the video / audio device unit 23 includes MP3, DVD, DVD, VCR, TV tuner, and a camera. It is configured to connect to the video / audio device using only jacks.

However, instead of the video / audio device of such a configuration, as shown in FIG. 2, only a TV tuner is integrated with the video / audio device and the rest is separately connected to an audio / video terminal using a jack. It can also be configured to do so.

In addition, the number of such configurations can be various.

The operation of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a circuit block diagram illustrating a signal flow of a wireless video / audio output device of the present invention as described above, wherein a remote control or keypad of the selection control input unit 11 is used to allow a user in a vehicle to enjoy a movie or music. When the specific video / audio device is turned on by using any one, the selection signal is input to the first control unit 12, and the first control unit 12 receiving the selection signal outputs a corresponding output signal to the control signal transmitting unit ( 13), the control signal transmitter 13 modulates the FM in the frequency band 50-100 MHz and wirelessly transmits the antenna to the control signal receiver 21 through the antenna.

The control signal receiving unit 21 wirelessly receiving the FM modulated control signal detects and outputs the control signal to the second control unit 22, and the second control unit 22 outputs the control signal to MP3 (MP3). ) Select a specific video / audio device by outputting to the video / audio device unit 23 having DVD, DVD, VCD, VCR, TV tuner, camera, etc. Done.

In addition, the second controller 22 outputs the control signal to the input switching switch 24 to output the video / audio data of the selected specific video / audio device to the video / audio data transmitter 25. (24) will be switched.

Subsequently, the video / audio data transmitter 25 receiving the video / audio data modulates the data to the AM / FM signal in the 2.4 GHz or 900 MHz frequency band and transmits the antenna to the video / audio data receiver 15. Wireless transmission through

The video / audio data receiver 15 wirelessly receiving the AM or FM modulated control signal detects the control signal and outputs the control signal to the display unit 14.

In this case, the first control unit 12 outputs a control signal such that the video / audio data is output to the display unit 14.

Accordingly, the display unit can watch the video / audio desired by the vehicle occupant.

Of course, in the case of a device that outputs only a voice such as an MP3 player, only the voice is output through the speaker.

In the case of FIG. 2, unlike the case in which a specific video / audio device selection button is included in the selection control input unit as shown in FIG. 1, the MP3 (or audio) terminal of the video / audio device unit 23 having a TV tuner MP3), DVD, VCD, VCR, camera connection jack, press the Play button on the remote control or keypad and the control signal reaches the video / audio device. It works as described in the operation of 1.

As can be seen from the configuration and operation of the present invention described above, the present invention has a video / audio data receiver (RX) in the display device 10, the video / audio data transmitter in the video / audio generator 20 By selecting the specific video / audio device of the video / audio device unit 23 by embedding the TX, the display device 10 can watch video and music without a separate cable.

By adopting the short-range wireless communication technology in the in-vehicle audio / video system, there is no need for cabling and arrangement of cables, and it improves the installation workability, shortens the installation time, and also prevents short circuit and disconnection. There is no need to worry.

Claims (2)

In a display device with a built-in FM transmitter, A selection control input unit for selecting a specific device among a plurality of video / audio devices; A video / audio data receiver for wirelessly receiving and detecting video / audio data of the specific device; A first control unit which receives the selection signal and outputs a predetermined control signal; A display unit which receives an output signal of the video / audio data receiver and outputs a video and an audio by the control signal; A display device including a control signal transmitter for modulating a specific device control signal of the first controller and wirelessly transmitting the signal; A control signal receiver for wirelessly receiving and detecting a specific device control signal of the control signal transmitter; A second controller which receives an output signal of the control signal receiver and outputs a predetermined control signal; A video / audio device unit having a specific device selected by the control signal of the second control unit; An input switching switch for switching the video / audio signal of the selected device by a control signal of the second control unit; And a video / audio generation control device including a video / audio data transmitter for modulating the video / audio data received by the switching of the input switch and wirelessly transmitting the modulated signal to the video / audio data receiver. Vehicle wireless video / audio output device, characterized in that. The video / audio output device for a vehicle according to claim 1, wherein an FM transmitter is used as the control signal transmitter, and the wireless transmission frequency is used in a frequency band of 50-100 MHz.