KR100913079B1 - An external tuner of setting information about region and a monitor using the external tuner - Google Patents

Abstract

The present invention relates to an external tuner capable of automatically setting a corresponding broadcasting system for each region and a monitor using the tuner. The external tuner according to the present invention includes a tuner sensing circuit for setting an operation mode according to a broadcasting system for each country. The tuner detection circuit has information on a predetermined voice signal output form and information on a corresponding country, and outputs them to the corresponding monitor. In addition, the monitor according to the present invention is a monitor capable of receiving a television broadcast signal using the external tuner. The microcomputer of the monitor has a program capable of supporting a broadcasting system for each country, and extracts the broadcasting system according to the country information input from the external tuner and controls the overall operation of the external tuner and monitor accordingly. .

According to the present invention, the monitors can automatically set the broadcasting system corresponding to each country through an external tuner having information about the corresponding country, and automatically set the OSD output language of the corresponding country.

External tuner, monitor, broadcasting system

Description

EXTERNAL TUNER OF SETTING INFORMATION ABOUT REGION AND A MONITOR USING THE EXTERNAL TUNER}

1 is a view showing a monitor connected to an external tuner according to the present invention.

Figure 2 is a block diagram schematically showing the internal configuration and interconnection of the external tuner and monitor according to the present invention.

3 is a circuit diagram schematically showing an internal circuit of an external tuner according to the present invention.

Figure 4 is a circuit diagram showing a signal input to each pin of the connector of the monitor driver connected to the external tuner according to the present invention.

5 is a circuit diagram illustrating a connection relationship between a tuner sensing circuit of an external tuner and a microcomputer of a monitor according to the present invention;

6 is a table for explaining a voice output mode and a setting mode for the OSD language in the tuner detection circuit of the external tuner according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: external tuner

200: monitor                 

170: tuner detection circuit

210: monitor driver

220: display

The present invention relates to a monitor capable of receiving a television broadcast signal using an external tuner and an external tuner thereof, wherein an output language of an on-screen display (hereinafter referred to as an 'OSD') set for each country is provided. And a monitor and an external tuner capable of automatically supporting different country-specific broadcasting systems such as audio signal output types.

In recent years, by attaching a tuner board capable of receiving a television broadcast signal to a computer, a monitor can be used as a television receiver. However, in this case, the broadcasting system is different for each country, the OSD output language is set differently, and the voice signal output form is different for each country. Therefore, when the monitor is used as a television receiver, there is a problem in that the tuner and the internal firmware of the monitor must set the type of broadcasting system of each corresponding country, the OSD output language of the corresponding country, and the form of the audio output signal.

In order to overcome this problem, the present invention is to propose a method for setting the information on the country and the audio output type on the external tuner, the monitor can be automatically set to the broadcasting system of the country using the information of the tuner. do.

An object of the present invention is to provide an external tuner capable of setting information on a country of use and transmitting the set country information to a monitor.

Another object of the present invention is to provide an external tuner capable of setting information on an audio signal output form and transmitting information on a set audio signal output form to a monitor.

In addition, the present invention is a monitor that can automatically set and support the broadcasting system of the country, the OSD language of the country and each voice signal output mode by using an external tuner having information on the country of use and the form of the audio signal output To provide another purpose.

The external tuner according to the present invention for achieving the above object is to be connected to a monitor to receive a television broadcast signal from the monitor, comprising a tuner detection circuit for setting the operation mode according to each country's broadcasting system It is characterized by. In this case, it is preferable that the tuner detection circuit outputs information on a predetermined voice signal output form and information on a corresponding country to the corresponding monitor.

In addition, the tuner detection circuit is more preferably provided with at least three signal lines for transmitting the information on the voice signal output form and the country concerned to the monitor.                     

In addition, the monitor according to the present invention is provided with a microcomputer, an image processing unit and an audio processing unit, and a monitor capable of receiving a television broadcast signal using an external tuner. The microcomputer has a program for supporting a broadcasting system for each country. And extracting a corresponding broadcasting system according to country information input from the external tuner, and controlling overall operations of the external tuner and the monitor accordingly.

In this case, it is more preferable that the microcomputer further receives information regarding the output form of the voice signal from the external tuner.

According to the present invention, it is possible to provide a monitor capable of automatically setting a broadcasting system corresponding to each country through an external tuner having information on a corresponding country and an audio signal output form. Therefore, by replacing only the external tuner suitable for the country, it is possible to provide a monitor that can be used in various countries without setting the firmware differently for each country.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. First, in adding reference numerals to the components of each drawing, it should be noted that the same components are denoted by the same reference numerals as much as possible, even if displayed on different drawings.

1 is a view illustrating a state in which an external tuner 100 and a monitor 200 are connected to each other through a cable according to the present invention. As shown in FIG. 1, the external tuner 100 is located outside the monitor 200. The tuner transmits an RF signal input through an antenna to a monitor, and receives a voltage and a tuning signal for operating the tuner from the monitor through the cable. In this case, the cable used to connect the tuner and the monitor should be a 15-pin D-SUB cable.

2 is a block diagram schematically showing the internal configuration and interconnection of the external tuner 100 and the monitor 200 according to the present invention.

First, the configuration of the external tuner 100 will be described with reference to FIG. 2. The tuner 100 is an antenna combining circuit 110, a high frequency amplification circuit 120, a coupling circuit 130, a local oscillation circuit 150, a mixed circuit 140, an image / The voice detection circuit 160 and the tuner detection circuit 170 are provided. The aforementioned antenna, antenna coupling circuit 110, high frequency amplification circuit 120, coupling circuit 130, local oscillation circuit 150, mixed circuit 140 and video / audio detection circuits are typical components of the tuner. As is well known in the art, the description thereof is omitted here.

The video / audio detection circuit 160 outputs the video signal and the audio signal to the image processor 212 and the audio processor 214 of the monitor, respectively.

The tuner sensing circuit 170 includes a TS channel consisting of TS0, TS1, and TS2, and the TS channel is connected to a corresponding signal line of the microcomputer of the monitor driver. According to the combination of TS0, TS1, and TS2 of the TS channel, the corresponding country and voice signal output form are set. Detailed description thereof will be described later.

Meanwhile, as illustrated in FIG. 2, the monitor 200 includes a monitor driver 210 and a display 220.                     

The monitor driver 210 includes an image processor 212, an audio processor 214, a microcomputer 216, and a power supply 218, and the display 220 is an image input from the monitor driver 210. A display device that outputs a signal.

Since the image processor 212 and the audio processor 214 are the same as those of a general monitor, description thereof will be omitted.

The power supply unit 218 not only controls the supply of power for operating the monitor, but also provides an operating voltage to the external tuner.

The microcomputer 216 controls the overall operation of the monitor, and has a built-in program capable of supporting all country-specific broadcasting systems. In addition, the micom preferably has a program that can support the font for the OSD output language of each country.

3 is a circuit diagram illustrating an internal circuit of the external tuner described above, and FIG. 4 is a circuit diagram illustrating a circuit of a monitor driver connected to the external tuner through a 15-pin D-SUB cable.

FIG. 5 is a block diagram illustrating a connection relationship between the tuner detection circuit 170 and the monitor driver 210 of the external tuner according to the present invention. As shown in FIG. 5, pull-up resistors R1, R2, and R3 of TS0, TS1, and TS2 of the above-described tuner sensing circuit are connected to TS0, TS1, and TS2 terminals of the microcomputer, respectively. At this time, the pull-up resistors R1, R2, and R3 are opened or shorted to output a high or low signal, respectively.                     

FIG. 6 is a table exemplarily shown to describe setting of a TS channel of a tuner sensing circuit. FIG. As shown in FIG. 6, the pull-up resistors of the TS0, TS1, and TS2 are set to low or high values according to national and audio signal output types. The OSD output language, which is one of Korean, Japanese, or English, is determined according to the setting of a country or region, and one of audio multiple or mono is determined according to the setting of the audio output type.

That is, as shown in FIG. 6, when TS0, TS1, and TS2 are all low values, the OSD output language is Korean, and the voice output form is set to voice multiplexing. In addition, when TS0, TS1, and TS2 are set to low, high, and high values, respectively, the OSD output language is Japanese, and the audio output form is set to mono.

Hereinafter, the operation of the external tuner and the monitor having the above-described configuration will be described in detail.

First, the operation mode set by the pull-up resistors of the TS channels TS0, TS1, and TS2 of the tuner sensing circuit of the external tuner is transmitted to the microcomputer of the monitor driver through the TS channel. The microcomputer determines the operation mode from the signal input to the TS channel to determine the OSD output language and the audio signal output form. In addition, the microcomputer determines the type of broadcasting system for each country, such as NTSC, PAL or SECAM, according to the operation mode, and sets the frequency of the external tuner through the SCL and SDA signal lines accordingly.

The external tuner transmits the video signal and the audio signal separated from the RF broadcast signal input through the antenna to the image processing unit and the audio processing unit, respectively, according to the frequency set by the microcomputer.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

According to the present invention, the operation mode of the microcomputer of the monitor driver can be automatically set according to the broadcasting system for each country through an external tuner. Therefore, even if the broadcasting system is different in each country, it is possible to use the same monitor in different countries by replacing only the external tuner. That is, according to the present invention, each monitor can be used in various countries by replacing only an external tuner suitable for the type of broadcasting system of the corresponding country even if firmware is not set differently for each country.

Claims (5)

An external tuner connected to a monitor to enable reception of a television broadcast signal from the monitor, And a tuner detection circuit having a TS channel for setting an operation mode according to a broadcasting system for each country, and outputting the information to the monitor by setting information on a corresponding country and an audio signal output form according to the combination of the TS channels. External tuner. 2. The tuner of claim 1, wherein the tuner sensing circuit is And a signal line for transmitting information on the audio signal output form and the OSD output language to a monitor. A monitor comprising a microcomputer, an image processing unit and an audio processing unit, and capable of receiving a television broadcast signal using an external tuner, The microcomputer has a program capable of supporting a broadcasting system for each country, and extracts the broadcasting system according to the country information input from the external tuner, and controls the overall operation of the external tuner and the monitor accordingly. Monitor. The method of claim 3, wherein the microcomputer And a plurality of mono output information according to the output form of the audio signal from the external tuner. The method of claim 3, wherein the microcomputer And setting the frequency of the external tuner through the SCL and SDA signal lines according to the type of broadcasting system for each country.

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