KR100698268B1 - Input signal compensation network apparatus and television receiver using the same - Google Patents

Abstract

The present invention provides an input signal compensating network device of a television and a television receiver for compensating for a loss and distortion of a signal input through a long cable of a predetermined length from an external device such as a computer or an operation server. A signal synthesizing and converting unit for synthesizing the R, G, and B video signals with the H and V sync signals and converting the synthesized RGB video signal and the HV sync signal into differential signals; A signal connection unit for connecting the RGB video signal converted into the differential signal and the HV sync signal by the signal synthesizing and converting unit; A signal separation unit for separating the RGB video signal and the HV sync signal connected through the signal connection unit into R, G, and B video signals and the H and V sync signals; A signal compensator for compensating and outputting gains and frequency bands of the R, G, and B video signals and the H and V sync signals separated by the signal separator; A signal delay unit for delaying and outputting the R, G, and B video signals input from the signal compensator; And a signal compensation controller for controlling signal compensation of the signal compensation unit.

Signal, compensation, TV, LAN, cable

Description

Input signal compensation network apparatus and television receiver using the same

1 is a schematic diagram of an operating system using a television receiver to which the present invention is applied.

2 is a block diagram of an input signal compensation network device of a television according to an embodiment of the present invention;

3 is a block diagram of an input signal compensation network device of a television according to another embodiment of the present invention.

4 is a block diagram of a television receiver according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: TV receiver 200: computer

300: operation server 400, 500: input signal compensation network device

410: signal synthesis and conversion unit 420: signal connection unit

421 and 422: first and second LAN ports 430: signal separation unit

440: signal compensation unit 450, 510: signal delay unit

460: signal compensation control unit 470: user input unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input signal compensating network device of a television, and more particularly, to an input of a television capable of compensating for loss and distortion of a signal input through a long cable of a predetermined length or more from an external device such as a computer or a server A signal compensation network device and a television receiver using the same.

In general, television receivers (TVs) are home appliances which are most widely distributed to the public as one of the main image transmission media. In recent years, network TVs having Internet search functions, PC monitor functions, and the like have been developed, and this trend is further accelerated in conjunction with the development of digital TVs.

On the other hand, with the development of the Internet technology, the existing department stores or market-oriented off-line shopping methods are changing to online shopping methods such as TV home shopping or shopping malls. The online shopping market is growing rapidly with the increase in TV home shopping viewership and the explosive increase in the Internet population.

However, since the conventional TV home shopping is a one-way purchase method in which a user selects and purchases an item when a user wants to purchase it while watching a TV broadcast, the user can timely display information about a product he / she wants. There was a problem that it was difficult to provide. In addition, since the number of TV home shopping channels and Internet shopping malls has increased rapidly, and product information such as price and delivery period provided by each home shopping channel and shopping malls is different, it is often necessary to hesitate in which shopping mall to purchase goods. In order to solve this problem, in Korean Patent Application No. 2003-0029784, when a buyer inputs a condition of a desired item to purchase through a network TV, the on-demand item purchase system which searches for and informs the user of the item information corresponding to the condition And a method.

Briefly with respect to the domestic patent application invention having such a technical feature, the network includes a TV, a server and at least one shopping mall, wherein the TV is a purchase that can input the desired purchase item conditions and purchase decision intention A condition input unit, a personal information input unit capable of inputting personal information of the buyer, and a display unit which displays the goods condition input by the buyer, personal information and goods information provided from the server, and the server Search for a product that stores the item information provided from the shopping mall and whether there is an item matching the purchased goods conditions input from the TV by using the product information and provides the item information to the TV Contains wealth.

As such, a technology in which a TV is connected to a network to perform communication has been developed. Recently, various information is provided to a TV using a computer or an operation server connected to the TV through a local area network (LAN) in a hotel. In order to provide various information to the TV through the local area network, the computer or operation server and the TV must be connected to a long cable of a certain length. Therefore, the video signal provided from the computer or operation server is transmitted to the TV through a long cable. In the process, the gain and frequency band of the video signal are attenuated. Accordingly, in order for a TV to normally receive various signals provided from an external device such as a computer located at a long distance, there is a problem in that a signal compensating device such as a booster, which is expensive, needs to be installed.

The present invention has been made to solve the above problems, an object of the present invention is a television that can compensate for the loss and distortion of the signal input through a long cable of a certain length from an external device such as a computer or operation server An input signal compensation network apparatus and a television receiver using the same are provided.

Another object of the present invention is to compensate for the loss and distortion of the signal input to the television receiver via a long cable from an external device such as a computer or an operation server, so that the TV receiver is provided through a long cable from an external device located at a remote location. Provided is an apparatus that can normally receive various signals.

Still another object of the present invention is to reduce the cost of purchasing equipment such as a booster by normally receiving various signals provided through a long cable from the outside by the compensation of the input signal made inside the TV receiver. Provide the device.

In order to achieve the above object, the present invention provides an input signal compensating network device of a television for compensating a video signal input through an cable from an external device and outputting the same to an output terminal. A signal synthesizing and converting unit for synthesizing the V sync signal and converting the synthesized RGB image signal and the HV sync signal into a differential signal; A signal connection unit for connecting the RGB image signal converted into the differential signal by the signal synthesizing and converting unit and the HV sync signal; A signal separation unit for separating the RGB video signal and the HV sync signal connected through the signal connection unit into R, G, and B video signals and H and V sync signals; A signal compensator for compensating and outputting gains and frequency bands of the R, G, and B image signals separated by the signal separator, and H and V sync signals; A signal delay unit for delaying and outputting the R, G, and B video signals input from the signal compensator; And a signal compensation controller for controlling signal compensation of the signal compensation unit.

The present invention provides a television receiver for compensating an image signal input through a cable from an external device and outputting it to a screen, comprising: an input / output jack for receiving an R, G, and B video signal and an H, V sync signal, and the input / output jack A signal compensator for compensating the gain and frequency bands of the R, G, and B video signals inputted through the H, V sync signal, and a signal for delaying the R, G, and B video signals inputted from the signal compensator A delay unit, a signal compensation controller for controlling signal compensation of the signal compensator, an image port for connecting R, G, B video signals and H, V sync signals output from the signal delay unit, and a video port. And an image processor for outputting the R, G, and B image signals and the H and V sync signals inputted through the screen.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a schematic diagram of an operating system using a television receiver to which the present invention is applied, which is connected to a television receiver 100 for displaying an input video signal on a screen (not shown), and to the television receiver 100 via a cable. It is composed of a computer 200 and the operation server (300).

The television receiver 100 receives a composite video signal transmitted from a broadcasting station and outputs a video signal and an audio signal included in the composite video signal through the screen and a speaker (not shown), respectively, and the computer 200 or the operation server. The video signal provided from 300 is received and displayed on the screen.

The computer 200 and the operation server 300 are connected to the television receiver 100 through the cable, and the various video information consisting of R, G, and B video signals and H and V sync signals are transmitted through the cable. Provided to the receiver 100.

Here, when the computer 200 and / or the operation server 300 and the television receiver 100 are connected through a long cable of a predetermined length or more, the image output from the computer 200 or the operation server 300 As the signal passes through a long cable, its gain and frequency band are attenuated. Accordingly, in the present invention, by compensating for such signal loss and distortion, the television receiver 100 can normally receive a video signal from a computer 200 or an operation server 300 located at a long distance. Looking at the embodiment for implementing the technical concept of the present invention as follows.

2 is a block diagram of an input signal compensation network device of a television according to an embodiment of the present invention.

Referring to FIG. 2, an input signal compensating network device 400 of a television according to an embodiment of the present invention may include an RGB image signal obtained by synthesizing an inputted R, G, B video signal, and an H, V sync signal; A signal synthesizing and converting unit 410 for converting the HV sync signal into a differential signal (positive (+,-) signal), and an RGB image signal converted into a differential signal by the signal synthesizing and converting unit 410. And a signal connection unit 420 for connecting the HV sync signal and an RGB video signal and an HV sync signal connected through the signal connection unit 420 into R, G, B video signals, and H, V sync signals. A signal separator 430, a signal compensator 440 for compensating and outputting gains and frequency bands of the R, G, and B video signals separated by the signal separator 430, and H and V sync signals; A signal delay unit 450 for delaying and outputting the R, G, and B video signals input from the compensator 440; And a signal compensation controller 460 for controlling the signal compensation of the signal compensation unit 440 and the signal delay of the signal delay unit 450.

The input signal compensation network device 400 of the television of the present invention further includes a user input unit 470 for inputting a user command regarding signal compensation and signal delay.

The signal synthesizing and converting unit 410 synthesizes the R, G, and B video signals and the H and V sync signals inputted through a cable from an external device such as the computer 200 or the operation server 300, and then synthesizes the RGB images. The signal and the HV sync signal are converted into differential signals and output to the signal connection unit 420, which is suitable for the LAN cable since a LAN cable, which is a component of the signal connection unit 420, can transmit only differential signals. This is converted into a differential signal.

The signal connection unit 420 has a first LAN port 421 connected at one side to an output terminal of the signal synthesizing and converting unit 410 and a second side connected to the LAN cable, and a LAN connected at a side to the first LAN port 421. The second LAN port 422 is connected to the cable and the other end is connected to the input terminal of the signal separation unit 430. Here, a LAN cable having a long length of 100 m or more may be used, and thus two or more LAN ports constituting the signal connection unit 420 may be employed depending on the length of the LAN cable.

As such, the signal connection unit 420 is configured such that the RGB image signal and the HV sync signal, which are differential signals output from the signal synthesizing and converting unit 410, are connected to the first LAN port 421, the LAN cable, and the second LAN port ( 422 is sequentially transmitted to the signal separation unit 430.

The signal separator 430 separates the RGB image signal and the HV sync signal inputted through the signal connection unit 420 into R, G, and B video signals, and the H and V sync signals, and outputs them to the signal compensator 440. This is for the signal compensator 440 to compensate for gains and frequency bands of the R, G, and B image signals, and the H and V sync signals, respectively.

The signal compensator 440 compensates gains and frequency bands of the R, G, and B image signals and the H and V sync signals input from the signal separator 430, and instructs the signal compensation controller 460 to compensate. The gain and frequency bands of the R, G, and B video signals and the H and V sync signals that are input by the gain and frequency bands are amplified. Here, the signal compensator 440 outputs the compensated R, G, B image signals to the signal delay unit 450 and directly outputs the compensated H, V sync signals to the output terminal.

The signal compensation controller 460 automatically or manually adjusts signal compensation and controls a signal delay according to a user's instruction. More specific operations thereof are as follows.

When the user instructs to automatically control the signal compensation through the user input unit 470, the signal compensation controller 460 sets the automatic compensation mode and then compensates the signal by a preset gain and frequency band value. ). Accordingly, the signal compensator 440 amplifies the gain and frequency bands of the input R, G, and B video signals and the H and V sync signals by the gain and frequency bands indicated by the signal compensation controller 460. In this case, gains and frequency bands of the R, G, and B image signals and the H and V sync signals compensated by the signal compensator 440 are compensated up to the standard gain and the standard frequency band. Here, the compensation gain and frequency band values preset in the signal compensation controller 460 are set through experimental verification, that is, the gain and frequency band values that are attenuated by the cables in the process of transmitting the video signal through the cables. After verifying through experiments, the compensation gain and frequency band values are set in advance to compensate the signal by the loss value of the verified signal.

If the user instructs to manually control the signal compensation through the user input unit 470, the signal compensation controller 460 sets the manual compensation mode.

When the user inputs the compensation gain and the frequency band value while the manual compensation mode is set as described above, the signal compensation controller 460 controls the signal compensator 440 to compensate the signal by the input gain and the frequency band value. Accordingly, the signal compensator 440 amplifies the gain and frequency bands of the input R, G, and B video signals and the H and V sync signals by the gain and frequency bands input by the user.

When the user inputs a signal delay time through the user input unit 470 and instructs a signal delay, the signal compensation controller 460 controls the signal delay unit 450 to delay the image signal by the input signal delay time. do. Accordingly, the signal delay unit 450 delays the R, G, and B image signals input by the signal delay time input by the signal compensation controller 460 and outputs the delayed R, G, and B image signals to the output terminal. Here, when delaying the R, G and B video signals, the signal delay unit 450 does not delay the input R, G and B video signals by the signal delay time indicated by the signal compensation controller 460, respectively. When the R, G, and B video signals are differentially input from the signal compensator 440, the signal compensation controller 460 delays the signal delay time indicated by the signal compensation controller 460 from the input point of the video signal input first. When the video signal is delayed by a predetermined time, even if the R, G, and B video signals are differentially inputted from the signal compensator 440 in time, the signal delay unit 450 simultaneously outputs the R, G, and B video signals to the output terminal. Will print.

The user input unit 470 may be implemented as a push button or a touch screen.

3 is a block diagram of an input signal compensation network device of a television according to another embodiment of the present invention.

Referring to FIG. 3, the input signal compensating network device 500 of a television according to another exemplary embodiment of the present invention includes a signal synthesizing and converting unit 410, a signal connecting unit 420, and a signal separating unit ( 430, a signal compensator 440, a signal compensator 460, and a user input unit 470, but a signal delay unit 510 for delaying a signal in a different manner from the signal delay unit 450 in FIG. 2. ).

The signal delay unit 510 determines the time difference from which the R, G, and B image signals are input from the signal compensator 440 without being controlled by the signal compensation controller 460 and delays the image signal according to the determination result.

For example, when the R, G, and B video signals are input from the signal compensator 440, if the R, G, and B video signals are simultaneously input, the signal delay unit 510 may simultaneously input the R, G, and B video signals. The signal is output directly to the output stage without delay. If the R, G, and B video signals are differentially input from the signal compensator 440, the signal delay unit 510 preferentially receives the video signals inputted until all of the R, G, and B video signals are input. After the delay, when all of the R, G, and B video signals are input, the R, G, and B video signals are simultaneously output to the output terminal.

The television receiver of the present invention using the input signal compensation network device of the television of the present invention as described above is as follows.

4 is a block diagram of a television receiver using an input signal compensation network device according to another embodiment of the present invention.

As shown in FIG. 4, the television receiver 600 of the present invention is input through an input / output jack 610 and an input / output jack 610 for receiving R, G, and B video signals and H and V sync signals. Delay the R, G, B video signal and the signal compensation unit 440 for compensating the gain and frequency band of the H, V sync signal and the R, G, B video signal input from the signal compensation unit 440 R, G, and B images output from the signal delay unit 450 and 510, the signal compensation controller 460 for controlling the signal compensation of the signal compensator 440, and the signal delay unit 450. The image port 620 for connecting the signal and the H, V sync signal, and the R, G, B video signal and the H, V sync signal input through the image port 620 to the screen 630 The image processor 640 and a controller 650 for controlling the image signal processing of the image processor 640 are provided.

The input / output jack 610 receives an R, G, B video signal and an H, V sync signal transmitted through a cable from an external device such as the computer 200 or the operation server 300 to the signal compensator 440. To pass.
The signal compensator 440 compensates the gain and frequency band of the R, G, and B video signals and the H and V sync signals input through the input / output jack 610, and the signal delay units 450 and 510 Delaying the R, G, B image signal input from the signal compensator 440, the signal compensation controller 460 controls the signal compensation of the signal compensator 440, with reference to Figs. The process described above compensates for the gain and frequency bands of the R, G, and B video signals and the H and V sync signals.

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The image processor 640 adjusts the screen size of an image signal output to the screen 630 under the control of the controller 650.
As shown in FIG. 3, the signal delay unit 510 determines the time difference between the R, G, and B image signals input from the signal compensator 440 without being controlled by the signal compensation controller 460. The video signal may be delayed according to the determination result.
For example, when the R, G, and B video signals are input from the signal compensator 440, if the R, G, and B video signals are simultaneously input, the signal delay unit 510 may simultaneously input the R, G, and B video signals. The signal is output directly to the output stage without delay. If the R, G, and B video signals are differentially input from the signal compensator 440, the signal delay unit 510 preferentially receives the video signals inputted until all of the R, G, and B video signals are input. After the delay, when all of the R, G, and B video signals are input, the R, G, and B video signals may be simultaneously output to the output terminal.
Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

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As described above, the present invention compensates for loss and distortion of a signal input to a television receiver through a long cable from an external device such as a computer or an operation server, thereby reducing the cost of purchasing equipment such as a booster. In addition, the usability of the television receiver for connection with an external device can be improved.

Claims (9)

In the input signal compensation network device of a television for compensating the video signal input from an external device via a cable and output to the output terminal, A signal synthesizing and converting unit for synthesizing the inputted R, G, and B video signals with the H and V sync signals and converting the synthesized RGB video signal and the HV sync signal into differential signals; A signal connection unit for connecting the RGB image signal converted into the differential signal by the signal synthesizing and converting unit and the HV sync signal; A signal separation unit for separating the RGB video signal and the HV sync signal connected through the signal connection unit into R, G, and B video signals and H and V sync signals; A signal compensator for compensating gains and frequency bands of the R, G, and B video signals and the H and V sync signals separated by the signal separator; A signal delay unit for delaying the R, G, and B image signals input from the signal compensator; And And a signal compensation controller for controlling signal compensation of the signal compensation unit. The method of claim 1, The signal connection portion, A first LAN port having one side connected to an output side of the signal synthesis and conversion unit and the other side connected to a LAN cable; And A second LAN port having one side connected to the LAN cable connected to the first LAN port and the other side connected to an input side of the signal separation unit; Input signal compensation network device of a television comprising a. The method of claim 1, The signal compensation control unit, And the signal compensator controls the signal compensator to compensate for a signal by a predetermined gain and frequency band value when an automatic control command instructing to automatically control signal compensation is input. The method of claim 1, The signal compensation control unit, And the signal compensator controls the signal compensator to compensate for a signal by gain and frequency band values input by a user when a manual control command instructing to manually control signal compensation is input. The method according to any one of claims 1 to 4, And the signal compensation control unit controls the signal delay unit to delay the video signal by a signal delay time input by the user. The method according to any one of claims 1 to 4, The signal delay unit determines the time difference between input of the R, G, and B video signals from the signal compensation unit without being controlled by the signal compensation controller, and delays the video signal according to the determination result. When the R, G, and B video signals are simultaneously input from the signal compensator, the signal delay unit immediately outputs the R, G, and B video signals to the output terminal without delay. When the R, G, and B video signals are differentially input from the signal compensator, the signal delay unit delays the input video signals until the R, G, and B video signals are all input, and then R, G And, when all of the B video signals are input, simultaneously output the R, G, and B video signals to the output terminal. The method according to any one of claims 1 to 4, And the signal compensator outputs R, G, and B video signals to the signal delay unit, and outputs H and V sync signals to the output terminal. In the television receiver for compensating the video signal input through the cable from an external device to output to the screen, Input / output jacks for receiving R, G, B video signals and H, V sync signals; A signal compensator for compensating gains and frequency bands of the R, G, and B video signals and the H and V sync signals input through the input / output jacks; A signal delay unit for delaying the R, G, and B video signals input from the signal compensation unit; A signal compensation controller for controlling signal compensation of the signal compensation unit; A video port for connecting the R, G, and B video signals and the H and V sync signals output from the signal delay unit; And an image processor for outputting R, G, and B image signals and H and V sync signals inputted through an image port to a screen. The method of claim 8, The signal delay unit determines the time difference between input of the R, G, and B video signals from the signal compensation unit without being controlled by the signal compensation controller, and delays the video signal according to the determination result. When the R, G, and B video signals are simultaneously input from the signal compensator, the signal delay unit immediately outputs the R, G, and B video signals to the output terminal without delay. When the R, G, and B video signals are differentially input from the signal compensator, the signal delay unit delays the input video signals until the R, G, and B video signals are all input, and then R, G And B video signals are inputted, wherein the R, G, B video signals are output to the output terminal simultaneously.

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