KR20090008788A - Dual view display av system - Google Patents

Dual view display av system Download PDF

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Publication number
KR20090008788A
KR20090008788A KR1020070072031A KR20070072031A KR20090008788A KR 20090008788 A KR20090008788 A KR 20090008788A KR 1020070072031 A KR1020070072031 A KR 1020070072031A KR 20070072031 A KR20070072031 A KR 20070072031A KR 20090008788 A KR20090008788 A KR 20090008788A
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KR
South Korea
Prior art keywords
dual
converter
signal
output
unit
Prior art date
Application number
KR1020070072031A
Other languages
Korean (ko)
Inventor
선종래
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 KR1020070072031A priority Critical patent/KR20090008788A/en
Publication of KR20090008788A publication Critical patent/KR20090008788A/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/265—Mixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor

Abstract

The present invention discloses a dual view display AV system. The present invention provides an AD converter that receives a CVBS or analog RGB signal and converts it into a Y / C signal, a graphics controller that receives the output of the AD converter to generate a digital RGB signal, and receives the output of the graphics controller. A dual core chipset unit for mixing images and a dual view LCD unit for displaying two or more output images having different viewing angles on one panel are controlled according to the control of the dual core chipset unit.

According to the present invention, two or more screens having different viewing angles can be represented on one LCD panel, so that the passenger of the passenger seat can view the DMB image while the driver receives the route guidance using the navigation.

Description

Dual View Display AV System {DUAL VIEW DISPLAY AV SYSTEM}

The present invention relates to a dual view display AV system, and more particularly, to an AV system capable of representing two different images having different viewing angles on one panel.

Recently, as cars are getting more advanced, various cars with various advanced options have been released indoors. With these options, various information such as traffic conditions, road information, and guidance maps required for driving to the destinations are often available. Devices that can be used are mounted indoors. For example, a car audio / video system (hereinafter, AV system) equipped with a device capable of watching TV or equipped with a navigation system, which is an automatic navigation system, is used.

A monitor is formed on the front panel of such an AV system, and a car audio cassette player or a compact disc player is installed inside the front panel, and the monitor is tilted by adjusting the angle by a predetermined angle to view the monitor or cassette in the cassette player. I can change a tape.

In a conventional AV system, one screen is displayed on one monitor so that a driver or a passenger seater can watch the same screen. As only one screen is displayed, the passenger of the passenger seat cannot watch TV or DMB while driving due to the restriction of viewing TV while driving. Although it is illegal, even if it is used in its own remodeling or general DMB attached to the vehicle as used, when the driver sees the navigation when necessary, the passenger of the passenger seat can not watch the desired DMB.

The present invention is equipped with a dual view display AV system that displays two or more screens having different viewing angles on one LCD panel, so that a passenger of a passenger seat can watch a DMB while a driver uses navigation. There is a purpose.

In order to achieve the above object, the dual view display AV system according to the present invention includes an AD converter which receives a CVBS or an analog RGB signal and converts it into a Y / C signal, and generates a digital RGB signal by receiving the output of the AD converter. A dual-core chipset unit that receives a graphics controller, an output of the graphics controller, and mixes at least two images, and a dual view for displaying two or more output images having different viewing angles on one panel under the control of the dual-core chipset unit. Its feature is that it includes an LCD unit.

Here, the AD converter includes a decoder for converting a CVBS input into analog RGB, a Y / C AD converter for converting the analog RGB into a Y / C signal, and a switching unit for switching two inputs of the AD converter. desirable. The CPU may control a power supply and a video signal, and control the dual core chipset through I2C communication.

Here, the dual-core chipset unit includes an AD converter that receives analog RGB and converts it into digital RGB to control the analog RGB signal of the navigation to pass through the AD converter, and outputs two PIP screens by forming a grid between pixels. Includes DV mix blocks. In this case, if the DV mix block does not pass, the input image is output as it is, that is, a single image is output.

In addition, the dual view LCD unit is composed of one LCD panel, a paradox barrier film is formed inside the panel to output different images according to the viewing angle, and the graphic controller generates a graphic image or mixes an OSD image. You can print

The dual view display AV system may further include an SDRAM having a buffer function for storing the two images and a flash memory storing firmware for operating the dual core chipset.

As described above, the dual view display AV system according to the present invention can express two or more screens having different viewing angles on one LCD panel, so that the passenger of the passenger seat can display the DMB image while the driver receives the route guidance using the navigation. It is possible to provide a dual view display AV system for viewing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following embodiments are provided to those skilled in the art to fully understand the present invention, can be modified in various forms, the scope of the present invention is limited to the embodiments described below no.

1 is a diagram illustrating a configuration of a dual view display AV system according to an exemplary embodiment of the present invention.

As shown in Fig. 1, the dual view display AV system includes a tuner unit 11, a T-DMB unit 12, an AV head unit 13, an external DSP amplifier 14, a keyboard 15, DVD navigation ( 16 and dual view system 17. Each device is connected via an H-LAN interface.

The tuner unit 11 is mainly used for an input portion of a radio receiver and is a component for selecting only the radio wave by tuning to a frequency of a constant radio wave (or electric signal). In general, audio systems function as AM / FM broadcast receivers and TV channel selection.

The T-DMB unit 12 receives the terrestrial digital multimedia broadcast transmitted through the relay tower from the data compressed in the MPEG-4 scheme. Through the VHF band having a bandwidth of about 1.5 MHz based on the T-DMB, even a receiver traveling at 200 km / h can receive video CD quality and CD quality stereo sound quality. Terrestrial digital multimedia broadcasting (T-DMB) uses MPEG-4 AVC (Advanced Video Coding) video compression data, MPEG-4 BSAC (Bit-) through the stream mode defined by the European Digital Audio Broadcating (DAB) standard. Sliced Audio Coding) After multiplexing MPEG-4 BIFS (Binary Format for Scenes) data for audio compressed data and interactive data broadcasting to MPEG-4 SL (Sync Layer) and MPEG-2 Transport Stream (TS), RS ( 204, 188) and streams with additional error protection mechanisms by convolutional stitching.

The AV head unit 13 is audio mounted on a dashboard and is a device in which a radio and a tape or CD player are combined.

An external DSP signal (14) is an external digital signal amplifier (DSP) with an integrated digital signal processor (DSP).

The keyboard 15 receives control of the AV system through the user. For example, the user can operate the keyboard 15 to control the power of a car audio system, play a CD / DVD / cassette, fast forward, rewind, skip, and select a channel of a radio / DMB. In recent years, it is common to provide a remote controller for wirelessly controlling the keyboard 15 for the user's convenience.

The DVD navigation 16 is a navigation to which a DVD player function is added.

The dual view system 17 is a block composed of a conventional FRT monitor and is an upgraded portion of the dual view display AV system according to the present invention, unlike the conventional AV system. Detailed description will be described below with reference to FIG.

2 is a block diagram illustrating a dual view display AV system according to the present invention.

The dual view display AV system includes an AD converter 201 that receives a CVBS or an analog RGB signal and converts it into a Y / C signal, and a graphic controller 203 that receives the output of the AD converter 201 and generates a digital RGB signal. And a dual core chipset unit 204 for mixing the two images by receiving the output of the graphic controller 203 and two outputs having different viewing angles on one panel under the control of the dual core chipset unit 204. It is composed of a dual view LCD unit 205 for displaying an image.

The AD converter 201 receives a CVBS signal, which is an output of a DMB system, or an analog RGB signal, which is an output of a navigation system, and converts the signal into a Y / C format signal. A detailed configuration of the AD converter 201 according to an embodiment of the present invention is shown in FIG. 3, which will be described below with reference to FIG. 3.

The AD converter 201 includes a decoder unit 301 for converting a CVBS input into analog RGB, a switching unit 302 for selectively switching two inputs of a CVBS input and analog RGB, and an analog RGB to Y / C signal. Is composed of a Y / C AD converter 303.

The decoder 301 receives the CVBS signal of the DMB and converts it into an analog RGB signal.

The switching unit 302 receives the DMB signal and the navigation signal and outputs one of the two signals to the input of the Y / C AD converter 303. That is, in the dual image support mode, the DMB video signal is selected and output, and in the single image support mode, the navigation video signal is selected and output to the input of the Y / C AD converter 303. At this time, the CVBS signal, which is an input of the DMB, is converted into analog RGB through the decoder unit 301 and input to the switch unit 302, and the analog RGB input, which is a navigation input, is input to the switch unit 302 as it is. In other words, the input of the Y / C AD converter 303 is an analog RGB signal.

The Y / C AD converter 303 receives the output analog RGB signal of the switching unit 302, converts the signal into a Y / C format signal, and outputs it. The Y / C signal is a higher level signal than CVBS. It is an 8-bit digital signal with a mixture of luminance and sync and color difference.

2, the remaining components of the dual view display AV system are described.

The graphic controller 203 receives an 8-bit Y / C signal and converts the signal into a 16-bit digital RGB format. The graphic controller 203 generates a graphic image, and also mixes and outputs an OSD with a video signal of DMB and navigation.

The dual core chipset unit 204 is a type of scaler for adjusting the size of the output image. The dual core chipset unit 204 receives a digital 16 bit RGB signal and an analog RGB signal, converts the image into a 6 bit RGB signal, and outputs the image to the dual view LCD unit 205. do. Here, the analog RGB signal is converted into digital RGB via an internal AD converter (not shown). Meanwhile, the dual-core chipset unit 204 includes a DV mix block, and functions to output two PIP screens by forming a grid between pixels. At this time, if the DV mix block does not pass, a single image is output, and whether the DV mix block passes, that is, selection of single or dual image output is controlled by the CPU 202 by the I2C interface.

The dual view LCD unit 205 is composed of one LCD panel and displays an image output by the dual core chipset unit 204. Unlike a general LCD panel, a panel of the dual view LCD unit 205 may have a paradox barrier layer formed therein to output different images for left and right viewing angles. That is, it is possible to show the route guidance screen through the navigation screen for the person sitting on the left side and to show the DMB image to the person sitting on the right side.

The dual view display AV system further includes a CPU 202, an SDRAM 206, and a flash memory 207.

The CPU 202 is a central processing unit of the AV system to control the vehicle external power supply and to control all signals of the AV system. The CPU 202 controls the single or dual image representation switching of the dual core chipset unit 204 through the I2C interface.

The SDRAM 206 performs a buffer function to store digital RGB and analog RGB image inputs at each designated address in RGB 6bit format to match the pixel size of the LCD and then spray them all at once.

The flash memory 207 stores a firmware program for operating the dual core chipset, and the dual core chipset unit 204 can boot or execute a command using the built-in program.

The configuration of the present invention has been described above through the preferred embodiments and the accompanying drawings. However, these are only examples and are not used to limit the scope of the present invention. Those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this, and the true scope of protection of the present invention should be determined by the technical spirit of the appended claims. .

1 is an exemplary diagram of a dual view display AV system configuration according to the present invention;

2 is a block diagram schematically illustrating a dual view display AV system according to the present invention;

3 is a block diagram illustrating an AD converter of a dual view display AV system according to the present invention.

Description of the main parts of the drawing

201: AD converter 203: graphics controller

202: CPU 204: dual core chipset section

205: Dual View LCD Part 206: SDRAM

207: flash memory

Claims (9)

An AD converter that receives a CVBS or analog RGB signal and converts it into a Y / C signal; A graphic controller receiving the output of the AD converter and generating a digital RGB signal; A dual core chipset unit which receives the output of the graphic controller and mixes at least two images; Dual view LCD unit for displaying two or more output images of different viewing angles on one panel under the control of the dual core chipset unit Dual view display AV system comprising a. The method of claim 1, The AD converter includes a decoder for converting a CVBS input into analog RGB; A Y / C AD converter for converting the analog RGB into a Y / C signal; And a switching unit for switching two inputs of the AD converter. The method of claim 1, The CPU controls the power and the image signal, And controlling the dual core chipset through I2C communication. The method of claim 1, The dual core chipset unit includes an analog-to-digital converter (AD converter) for receiving an analog RGB input digital RGB. The method of claim 1, The dual core chipset is a dual view display AV system, characterized in that it comprises a DV mix block for implementing the two PIP screen in the form of a grid between pixels. The method of claim 5, The dual view display AV system, wherein the input image is output as it is without passing through the DV mix block. The method of claim 1, The dual view LCD unit is composed of one LCD panel, A dual view display AV system, wherein a paradox barrier film is formed inside a panel to output different images according to a viewing angle. The method of claim 1, And the graphic controller generates a graphic image or mixes and outputs an OSD image. The method of claim 1, SDRAM having a buffer function to store the two images, Flash memory for storing the firmware for operating the dual-core chipset Dual view display AV system further comprises.
KR1020070072031A 2007-07-19 2007-07-19 Dual view display av system KR20090008788A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101116071B1 (en) * 2011-02-28 2012-02-13 (주)디지털포캐스트 Broadcasting system for integrated controlling of mixed audio video signal using serial digital interface and method thereof
KR101310941B1 (en) * 2012-08-03 2013-09-23 삼성전자주식회사 Display apparatus for displaying a plurality of content views, shutter glasses device for syncronizing with one of the content views and methods thereof
KR101309783B1 (en) * 2011-12-30 2013-09-23 삼성전자주식회사 Apparatus and method for display
TWI570705B (en) * 2010-10-13 2017-02-11 微軟技術授權有限責任公司 Use of low-power display on device
CN106671907A (en) * 2017-01-04 2017-05-17 延锋伟世通电子科技（南京）有限公司 Double-screen display vehicle-mounted information entertainment system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI570705B (en) * 2010-10-13 2017-02-11 微軟技術授權有限責任公司 Use of low-power display on device
KR101116071B1 (en) * 2011-02-28 2012-02-13 (주)디지털포캐스트 Broadcasting system for integrated controlling of mixed audio video signal using serial digital interface and method thereof
KR101309783B1 (en) * 2011-12-30 2013-09-23 삼성전자주식회사 Apparatus and method for display
KR101310941B1 (en) * 2012-08-03 2013-09-23 삼성전자주식회사 Display apparatus for displaying a plurality of content views, shutter glasses device for syncronizing with one of the content views and methods thereof
CN106671907A (en) * 2017-01-04 2017-05-17 延锋伟世通电子科技（南京）有限公司 Double-screen display vehicle-mounted information entertainment system
CN106671907B (en) * 2017-01-04 2017-12-19 延锋伟世通电子科技（南京）有限公司 A kind of shuangping san vehicle-mounted information and entertainment system

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