KR100343721B1 - Analog video signal input/output equipment, connection status congnition apparatus and method thereof - Google Patents

Abstract

The present invention relates to an analog video signal input / output device and an apparatus and method for recognizing a connection state of the device, and more particularly, to transmit information such as a device name, a device classification type, a manufacturer name, and the like from a video output device and to decode it from a video display device. To display a display selection menu. In accordance with an aspect of the present invention, in the connection between an image input device and a plurality of image output devices, the plurality of image output devices includes an encoder 212 for generating device description data such as a device name, a device classification type, and a device manufacturer name. And a mixer 213 for inserting the above-described encoded device description data into a vertical regression period (VBI) existing in the analog video signal, wherein the video input device is configured from the video output device 210. A decoder 221 which extracts and decodes device description data inserted in a vertical regression period (VBI) existing in the analog video signal, and classifies the decoded device description data for each analog input terminal into a database; Display the image on the screen by processing the signal and set the display of the display selection menu by the user And a video display unit 222 for displaying the device information extracted by the decoder 221 as an image.

Description

ANALOG VIDEO SIGNAL INPUT / OUTPUT EQUIPMENT, CONNECTION STATUS CONGNITION APPARATUS AND METHOD THEREOF}

The present invention relates to connection device recognition, and more particularly, to an analog video signal input / output device and a connection state recognition device and method thereof.

1 is a block diagram illustrating a conventional connection between devices, and as shown in FIG. 1, each of the analog input terminals 1 to 3 of the video display device 110 displaying the analog inputs 1 to 3 on the screen during display setting of the display selection menu. Set-top box (STB) 120, VCR (130), DVD player 140 is connected is configured.

Referring to the operation of the prior art as follows.

When the user purchases the set-top box 120, V130, and DVD player 140, the user connects to the analog video input terminals 1 to 3 of the video display device 110, respectively.

Thereafter, when the user sets the external terminal selection with a remote controller, etc. in a state in which the connection between the devices is completed, the video display device 110 uses a random number, for example, analog input terminal 1, analog input terminal 2, and analog input terminal 3. The display selection menu created and written is displayed on the screen.

At this time, when the user selects the analog input terminal 2 by moving the cursor with a recocon or the like, the video display device 110 switches to the analog input terminal 2 and inputs an output signal from the VRL 130.

Accordingly, the image display device 110 processes the output signal from the VRL 130 to display an image on the screen and output audio through the speaker.

However, in the related art, since device description information does not exist in transmission data of an analog image output device, the image display device cannot actively recognize a connection state with respect to the analog image output device.

That is, conventionally, since the display selection menu displays only a random number written by the manufacturer, the user should select a desired device by remembering which video output device among the plurality of video output devices is connected to the analog video input terminal. There is discomfort.

Therefore, in the related art, when the connection state of a device is changed, the user has to check the connection state of the device again and then select a corresponding analog image input terminal to which the desired device is connected.

In order to alleviate this inconvenience and provide convenience of use, a method of inputting a type or device name of a device connected to an analog video input terminal has been proposed.

However, even in such a method, when the connection state of the device is changed, it is inconvenient for the user to input the device type and the device name again.

Accordingly, the present invention provides an analog video signal input which is designed to transmit information such as device name, device classification type, manufacturer name, etc. in a video output device, and to decode it in a video display device to display a display selection menu. An object of the present invention is to provide a device and a method for recognizing a connection state of an output device and the device.

In addition, another object of the present invention is to be able to actively recognize a connection state between devices by decoding and displaying information from an image output device.

1 is a block diagram showing a connection between a conventional device.

Figure 2 is a block diagram showing the connection between devices in an embodiment of the present invention.

Figure 3 is an exemplary view showing a display menu display for the device connection in the present invention.

Explanation of symbols on the main parts of the drawings

210: video output device 211: video signal output unit

212 encoder 213 mixer

214,223: CPU 220: Video display device

221: decoder 222: video display unit

In order to achieve the above object, the present invention connects a plurality of video output devices to respective analog video input terminals of a video display device, wherein the plurality of video output devices includes a device name, a device classification type, a device manufacturer name, and the like. And an encoder for generating device description data, and a mixer for inserting the above-described encoded device description data into an analog video signal, wherein the video display device is inserted into a video signal from a video output device. And a decoder for extracting, decoding and interpreting the description data.

The mixer is configured to insert the encoded device description data into a vertical blanking interval (VBI) existing in the analog video signal, or to insert it into a vertical regression period of the sync signal when the sync signal is applied separately from the video signal. It is characterized by.

The decoder extracts and decodes device description data from the vertical regression period of the synchronization signal when the vertical regression period (VBI) or the synchronization signal present in the analog video signal input to the analog image input terminal is applied separately from the video signal. The device description data is classified into an analog video input terminal and configured to make a database.

The present invention also provides a method for generating device description data, inserting the device description data generated in the analog video signal, and transmitting the device description data in the above-described analog video signal. Extracting the data, classifying the extracted device description data for each analog video input terminal, and making a database; if the display of the display selection menu is set, checking the database to connect a device connected to each analog video input terminal; Characterized in that the step of displaying information.

The insertion position of the device description data may be inserted into the vertical regression period of the analog signal when the vertical regression period existing in the analog video signal or a synchronization signal separate from the video signal is applied.

The device description data may be written by a manufacturer or separately written by a user when the video output device is manufactured.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Figure 2 is a block diagram of an apparatus for an embodiment of the present invention, as shown therein, which includes a video signal output section 211 for outputting an analog video signal, a device name, a device classification form, a device manufacturer name, and the like. An encoder 212 for generating device description data every arbitrary period, a mixer 213 for inserting the encoded device description data into a vertical regression period (VBI) existing in the analog video signal, and the image A video output device 210 having a signal output unit 211 and a CPU 214 for controlling the operation of the encoder 212, and a vertical present in the analog video signal from the video output device 210; A decoder which extracts and decodes the device description data inserted in the regression period (VBI), and classifies the decoded device description data for each analog video input terminal into a database (2). 21) and an image display unit 222 for processing the analog image signal to display an image on a screen and displaying the device information extracted by the decoder 221 as an image when setting display of a display selection menu by a user; And a video display device 220 having a CPU 223 for controlling the operation of the image display unit 222.

The mixer 213 is configured to insert the device description data from the encoder 212 into the vertical regression period of the synchronization signal when a synchronization signal is applied separately from the video signal.

The decoder 221 simultaneously receives signals from each analog video input terminal or sequentially receives them by a multiplexer (not shown).

The image display unit 222 includes a multiplexer for selecting an arbitrary terminal among a plurality of analog image input terminals.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

For example, when a user purchases a set top box (STB), a VCR, or a DVD player, the user connects to an analog video input terminal of the video display device 110.

Thereafter, when the user executes the external terminal setting mode with a remote controller in a state where the connection between the devices is completed, the image output device 210 has the image signal output unit 211 under the control of the CPI 214 recorded on the storage medium. The data is reproduced to output an analog video signal to the mixer 213.

At this time, the encoder 212 encodes the device description data including the device name, the device classification type, the device manufacturer name, etc. under the control of the CPI 214, and outputs the encoded device description data to the mixer 213.

Here, the encoder 212 may be configured to repeatedly generate the device description data every predetermined period or to generate the device description data only for a predetermined time by a specific key input of the user.

Accordingly, the mixer 213 inserts the device description data from the encoder 212 in the vertical regression period existing in the analog video signal at the video signal output unit 211 and transmits the device description data to the video display device 220.

When the analog image signal is input from the image output device 210 to the analog image input terminal, the image display device 220 receives a vertical regression in which the decoder 221 under the control of the CPI 223 is present in the analog image signal. In this period, the device description data is extracted and decoded, and the decoded device description data is interpreted to correspond to an analog video input terminal.

Thereafter, when the user sets the display of the display selection menu, the video display device 220 reads the database information from the decoder 221 and reads the database information of the video output device 210 connected to the analog video input terminal. The device description data including the device name, the device classification form, and the device manufacturer name is displayed on the image display unit 222.

Accordingly, the user selects a desired image output device based on the information displayed on the screen of the image display unit 222.

Although only one image output device is illustrated in the above description, a plurality of image output devices may be connected.

For example, as illustrated in FIG. 3, a set top box (STB) 310, a VCR 320, and a DVD player 330 may be connected to each analog video input terminal of the video display device 220.

The set top box (STB) 310, VCR (320) or DVD player 330 is provided with an encoder 212 and mixer 213 in the same manner as the video output device 210 shown in FIG. To configure.

Accordingly, the set top box 310 and the V 320 320 are connected to the video display device 220 while the set top box STB 310, the VCR 320, and the DVD player 330 are connected. Each DVD player 330 inserts device description data including a device name, a device classification type, a device manufacturer name, and the like into a vertical regression period (VBI) existing in an analog video signal to be transmitted to the video display device 220. do.

In this case, the video display device 220 checks the analog video signal transmitted from the set-top box 310, V-320 and the DVD player 330 by the decoder 221 is inserted into the vertical regression period (VBI). Each device description data is extracted, and the extracted device description data is decoded and interpreted, thereby making a database for each analog video input terminal.

Here, the decoder 221 may be configured to receive the transmission signals from the set-top box 310, V-320 and the DVD player 330 at the same time to multiple ports or in any order using one port. have.

Thereafter, when the user sets the display of the display selection menu, the image display device 220 reads the data that the CPI 223 makes in the database from the decoder 221 and controls the image display unit 222 to display the screen shown in FIG. The same display selection menu is displayed.

Accordingly, when the user moves the cursor position and selects a desired video output device, for example, a DVD player, the video display device 220 switches to the corresponding analog input terminal under the control of the CPI 223, thereby allowing the video display unit 222 to display the DVD. An analog image signal is processed by the player 330 to display an image on the screen.

The switching to the corresponding analog image input terminal is performed by the multiplexer provided in the image display unit 222.

If the image output device connected to the image display device 220 is changed, for example, when the positions of the V 320 and the DVD player 330 are changed from each other in FIG. 3, the analog input terminal is initially set when the display of the display selection menu is set. 2 is displayed on the screen of the video display unit 222 with the V-320 320 and the analog input terminal 3 connected to the DVD player 330.

In this case, the video display device 220 is a decoder 221 extracts the device description data from the analog video signal transmitted from the set-top box 310, V-320 and the DVD player 330, the decoded device Descriptive data is interpreted, classified by analog input terminals, and compared with previously databased data.

Accordingly, since the analog input terminals connected to the V-320 and the DVD player 330 are changed from each other, the decoder 221 updates the database and informs the C-fi 223.

At this time, the CPI 223 recognizes that the database has been changed and reads the updated database to control the image display unit 222 to display a display selection menu of the changed state on the screen.

Accordingly, the user checks the display selection menu displayed on the image display unit 222 and selects the desired image output device again.

Meanwhile, as described above, the video display device 220 may analyze device description data from the set-top box 310, V-320, and DVD player 330 to determine whether the corresponding device is connected to the analog input terminal. Therefore, when the device description data is not input from any analog video input terminal, it is possible to determine whether the device is not connected or the device is abnormal.

In addition, the operation of inserting the device description data into the vertical regression period (VBI) existing in the analog video signal has been described above. However, when the synchronization signal is applied separately from the video signal, the device description data is included in the vertical regression period of the synchronization signal. You can insert

As described in detail above, in the present invention, a video input device interprets and classifies information of a device transmitted from an image output device, and displays information of a corresponding device corresponding to each terminal as an image so that a user directly connects the device connected to each terminal. It is possible to select a desired device without having to check, thereby providing convenience to the user.

In addition, the present invention has an effect of improving the performance of the device by actively recognizing the device connected to each terminal in the video input device to display the connection state.

Claims (17)

In a video signal output device for outputting a video signal to a video display device, encoding for encoding device description data including a device name, a device classification form, a device manufacturer name, and the like for a predetermined time period or at a specific period during the initial display selection menu display. Means and a mixer for inserting the device description data generated by the encoding means into a video signal or a separate synchronizing signal and outputting the same to a video display device. A video signal input device that decodes a video signal from a video output device to display an image on a screen, wherein the device description data includes a device name, a device classification type, a device manufacturer name, etc. by decoding the video signal transmitted from the video output device. And decoding means for extracting the extracted device description data into a database for each video input terminal and displaying the extracted device description data on the screen, and displaying the device information for each terminal on the display selection menu. Device. A video signal input / output device for selectively displaying images from a plurality of video output devices on a screen of the video display device by connecting an image display device and a plurality of video output devices with video terminals. The device further comprises encoding means for generating device description data and a mixer for inserting device description data in the encoding means into a video signal, wherein the video display device comprises device description data from transmission signals in a plurality of video output devices. And a decoding means for extracting and displaying on the screen to display device information for each terminal in a display selection menu. 4. The apparatus of claim 3, wherein the encoding means is configured to generate the device description data for a predetermined time only at the initial display of the display selection menu. 4. The apparatus of claim 3, wherein the encoding means is configured to generate device description data every specific period. 4. The apparatus of claim 3, wherein the mixer is configured to insert device description data in a vertical regression period (VBI) of the video signal. 4. The apparatus of claim 3, wherein the mixer is configured to insert device description data in a vertical regression period of a synchronization signal applied separately from the image signal. 4. The apparatus of claim 3, wherein the device description data includes a device name, a device classification form, a device manufacturer name, and the like. 10. The apparatus of claim 8, wherein the device description data is written at the time of manufacture of the device or arbitrarily written by the purchaser. 4. The apparatus of claim 3, wherein the decoding means is configured to database the extracted device description data for each image input terminal. 12. The apparatus of claim 10, wherein the decoding means compares the device description data transmitted from the plurality of video output devices with the current database after the display selection menu is displayed, and refers to the changed information when the connected device of the current video input terminal is changed. And updating the information and displaying the update information on the screen. A method of recognizing a connection state of an image signal input / output device in which an image output device and an image display device are connected to an image terminal, the method comprising: a first step of generating device description data and inserting the device description data generated in the transmission signal; And a third step of extracting the device description data from the transmitted video signal, and classifying and displaying the device description data for each video input terminal. Way. The method of claim 12, wherein the device description data in the first step is generated for a predetermined time only at the initial display of the display selection menu. The method of claim 12, wherein the device description data in the first step is generated every specific period. 13. The method of claim 12, wherein the second step includes inserting the device description data into the vertical regression period of the video signal, and if device synchronization data separate from the video signal is applied, the device description data into the vertical regression period of the synchronization signal. Method of recognizing a connection state of an analog video signal input / output device, characterized in that the insertion process. The method of claim 12, wherein the third step comprises: classifying the extracted device description data by each image input terminal and making a database; when the display selection menu is set, checking the database to determine the connection of each device connected to each image input terminal. A method of recognizing a connection state of an analog video signal input / output device, characterized by comprising: displaying information on a screen. The method of claim 12, further comprising: extracting the device description data from the transmission signal after displaying the display selection menu to determine whether the data matches the data classified in the database; and if the comparison result does not match, refer to the currently extracted device description data. And updating the database and displaying the updated contents.