KR20000028068A - Method for selecting dual-sound of tv - Google Patents

Abstract

PURPOSE: A method for selecting a dual-sound of TV is provided to automatically select languages whenever a user selects channels in a dual-mode, by memorizing a mode of a selected language when it is a channel of the dual-mode. CONSTITUTION: A method for selecting a dual-sound of TV comprises the steps of: deciding whether a sound mode of a present channel is a dual-mode, when TV is on by a user's selection; memorizing a selected language if the user inputted a language selection signal, after the language selection signal is inputted by the user's selection, and outputting a broadcasting signal of the language; outputting a broadcasting signal as an initially caught language when the language selection signal is not inputted by the user, thereby automatically outputting the broadcasting signal of the selected language when the user selects a channel of which the language selection has been done previously.

Description

TV's dual sound selection method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV system, and more particularly, to a dual sound selection method of a TV, which improves user convenience by allowing a user to select / remember a language mode in a dual mode channel.

Hereinafter, a TV system according to the related art will be described with reference to the accompanying drawings.

1 is a schematic configuration diagram of a TV system of the prior art.

A schematic configuration of a TV system of the prior art is first composed of a TV system control unit 3 which controls the entire TV system and outputs a TV broadcast signal on the screen, and a TV body configured to receive a user's selection signal. The external input signal processor 4 for processing, the OSD unit 5 for outputting an OSD (On Screen Display) signal under the control of the TV system controller 3, and the tuning control signal of the TV system controller 3 A tuner unit 1 for selectively outputting a broadcast signal, a TV image processor 2 for receiving and outputting TV image data and OSD data of the tuner unit 1, and outputting the image data to the TV image processor 2 It is largely comprised of the external display part 6 which displays an output signal to the exterior.

The TV system configured as described above is controlled by the TV system control unit 3 that controls the entire TV system to perform respective operation modes.

For example, when a user inputs a control signal such as a TV o / off and channel selection, the user inputs a control signal such as a remote controller or the like, and the external input signal processor 4 processes the input signal to perform an operation according to the control signal. Enter (3).

The TV image data selected by the tuner unit 1 and the OSD data of the OSD unit 5 are processed by the TV image processing unit 2 and displayed on the external display unit 6 by the control signal processed as described above.

In the display operation of the broadcast program, the sound mode is output in mono, stereo, or dual mode depending on the program.

Such information is contained in broadcast information data transmitted in addition to the video signal.

That is, in such a TV system, various services using the same by carrying various information including broadcast information between program signals have been attempted.

Representative examples thereof include a video program system (VPS) and a program delivery code (PDC).

The VPS mainly includes information on broadcast programs, and the PDC includes program information and time information.

The audio signal contained in the TV composite video signal including such additional information is demodulated through a tuner, a surface acoustic wave (SAW) filter, and an SIF stage.

At this time, a pilot signal indicating the sound mode of the broadcast is transmitted and demodulated to pass through the PLL circuit.

Such a conventional TV system has the following problems.

Currently, in the case of the dual sound channel, the conventional TV has a problem that the user has to select a language again every time the dual sound channel is selected.

This causes inconvenience in device operation since the user has to reselect the language every time the user selects the channel in the dual mode.

The present invention is to solve the problem of the TV system of the prior art, to provide a dual sound selection method of the TV to enhance the user's convenience by being able to memorize the selected language (language) mode in the case of the dual mode channel. The purpose is.

1 is a view showing a schematic configuration of a TV system according to the prior art

2 is a diagram illustrating a schematic configuration of blocks related to pilot detection in a TV system;

3 is a flow chart illustrating a dual sound selection method of the TV according to the present invention.

♣ Explanation of symbols for the main parts of the drawing

20: Stereo PLL 21: Dual PLL

22: comparison unit 23: LED

24: decoder section 25: matrix section

In the dual mode channel, the TV's dual sound selection method according to the present invention enables to select / remember a language mode, when a user inputs a language selection signal, storing a selected language and outputting a broadcast signal in the corresponding language. And if the user does not input the language selection signal after the channel selection, the step of outputting the broadcasting signal in the first caught language consists of automatically outputting the broadcasting signal in the corresponding language when the user selects a channel for which language selection has been made. It features.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the dual sound selection method of the TV according to the present invention.

Broadcasting methods using broadcast information data may be classified into a VPS (Video Programmable System) and a PDC (Program Delivery Code).

The VPS transmits broadcast program information data on a 16th line existing on an equalized pulse section that does not appear on the screen among broadcast signals.

This allows the receiver (TV / VCR) to recognize the information of the broadcast signal currently being received by receiving the VPS signal.

In addition, the PDC is developed and used in Europe, such as Germany, the United Kingdom, Australia, and the difference from the VPS transmits the Teletext information data, and similarly, the teletext data information is loaded on the equalization pulse section. To give.

Here, the teletext information data of the PDC includes program information and visual information including a sound mode.

The pilot signal informing the sound mode of the broadcast transmitted to the TV composite video signal having such information data is transmitted and demodulated together.

Hereinafter, a pilot signal detection circuit according to the present invention will be described with reference to the accompanying drawings.

2 is a schematic structural diagram of blocks related to pilot detection in a TV system.

First, a stereo PLL (Phased Locked Loop) 20 and a dual PLL 21 detecting a pilot signal are compared with a pilot signal detected by the stereo PLL 20 and the dual PLL 21. A comparison unit 22, a decoder unit 24 operated by a result of the comparison unit 22 and a mode selection of a user, and a result of the decoder unit 24. A light emitting diode (LED) 23 for displaying a broadcasting state to a user, and a matrix unit 25 for combining audio signals according to a mode selection of the decoder unit 24. .

The operation of the pilot signal detection circuit configured as described above is as follows.

First, the stereo PLL 20 and the dual PLL 21 detect a pilot signal, and phase-modulate and lock the pilot signal, and the mode of the transmitted signal is mono broadcast or stereo broadcast or dual. Logic output is determined by determining whether it is broadcasting.

Subsequently, the signals output from the stereo PLL 20 and the dual PLL 21 are compared through the comparator 22 to transmit the current selected mode to the decoder 24.

The decoder unit 24 combines the current broadcast mode and the mode selected by the user in logic, and transmits the combined result to the matrix unit 25 so that the broadcast state is output in accordance with the intention of the user.

In addition, the decoder unit 24 sends the selected mode to the LED 23 to display the current broadcast status so that the user can know.

Therefore, there are three broadcast modes: mono, stereo, and dual, which depend on the output of the PLL.

The present invention is to provide the user with the output of the sound mode desired by the user using the sound information through the pilot signal detection circuit.

In the dual broadcasting mode having multiple language channels, each time the user selects a channel, the language must be selected again. The present invention stores the language information selected by the user once, and outputs the corresponding language without using a separate selection. To make it.

The dual sound selection method of the TV in the TV system having such a configuration is as follows.

3 is a flowchart illustrating a dual sound selection method of a TV according to the present invention.

First, when the TV is turned on by the user's selection and the channel is selected (301S), it is determined whether the sound mode of the current channel is the dual mode (302S).

If it is a dual channel, it is determined whether information on the selected language of the corresponding channel is stored (303S).

If information on the selected language of the corresponding channel is stored, the broadcast signal is output in the corresponding language using the information (308S).

If information on the selected language of the corresponding channel is not stored, a language selection signal is input according to the user's selection (304S).

When language selection is completed (305S), the selected language is stored (307S) and broadcasted in the corresponding language (308S).

If the user does not input the language selection signal, the broadcast signal is output in the first caught language (306S).

If the language selection in the dual mode is made, it is stored. Otherwise, the dual pilot recognition state is maintained until the TV is turned off (307S).

Later, when the user selects a channel for which language selection has been made, a broadcast signal is automatically output in the corresponding language.

That is, in the dual sound selection method of the TV according to the present invention, when the language selection contents in the dual mode are stored and the user selects the corresponding channel again, the broadcast output is performed in the stored language without additional selection.

The dual sound selection method of the TV according to the present invention stores a language selection signal of a user when watching a broadcast signal in a dual mode, and automatically selects a language when the user selects a corresponding channel so that the optimal broadcast signal is available to the user. It is effective to provide a reception environment.

Whenever the user selects a dual mode channel, the user does not select any one channel of the dual mode, but remembers one channel of the selected dual mode, and outputs the correct language in the user's desired language every time the channel is selected. It is effective to increase convenience.

Claims (1)

Determining whether a sound mode of a current channel is a dual mode when the TV is turned on by a user's selection when selecting a channel in a dual mode; Determining a language input signal according to a user's selection, and if the user inputs a language selection signal, storing the selected language and outputting a broadcast signal in a corresponding language; If the user does not input the language selection signal after the channel selection, the step of outputting the broadcast signal in the first catch language, and when the user later selects a channel for which language selection has been made, it automatically outputs the broadcast signal in the corresponding language. How to choose dual sound of TV.