KR19980052594A - Audio signal determination method of video equipment - Google Patents

Abstract

The present invention relates to a method for determining an audio signal of a video device for determining the type of an audio signal by using KBPS (Korea Broadcasting Program System) information. The present invention relates to audio by using KBPS (KBPS) information. An audio signal determination method of a video device for discriminating stereo and dual of a signal, comprising: a first KBPS code reading step of reading a KBPS code for a program currently aired from KBPS information; ; A first storage step of storing a KBPS code for the currently aired program read in the first KBPS code reading step; A second KBPS code reading step of reading the KBPS code for the airing program that is aired today from the KBPS information; A second storage step of storing a KBPS code for a program that is broadcast today, read in the second KBPS code reading step; A KBPS code determination step of determining whether the KBPS code for the current program stored in the first storage step belongs to the KBPS code for the today's airing program stored in the second storage step; And if the KBPS code for the current program stored in the first storage step in the KBPS code determination step belongs to the KBPS code for today's broadcast program stored in the second storage step, By including the stereo and dual discrimination step of the audio signal for discriminating the stereo and dual information of the audio signal from the KBPS code for the program, it is possible to accurately determine the stereo and dual of the audio signal.

Description

Audio signal determination method of video equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for determining an audio signal of a video device, and more particularly, to a method for determining an audio signal of a video device for determining the type of an audio signal using KBPS (Korea Broadcasting Program System) information.

As is well known, KBPS is a system for making reservation recording easier.

That is, KBPS converts the program reservation recording data into a digital signal on a television signal, and transmits KBPS data to any one line of the video vertical blanking interval, that is, 16H lines. It inserts and transmits, and this signal is demodulated by the K-BPS decoder on the receiving side to perform broadcast program reservation recording, and refers to a Korean-type TV reservation recording system that performs functions such as automatic time setting.

As a kind of data transmitted in such a KPS system, broadcasting station standard time information, broadcasting station name information, broadcasting date information, program information, and the like are transmitted.

In this case, the program information may include a recognition ID code of a program corresponding to one week, a broadcast start time and broadcast end time for each broadcast program, a broadcast title, a broadcast program classification code, that is, a program such as drama, news, sports, and music. According to the classification code according to the type of audio signal for each program, that is, stereo (dual), dual (dual) detailed guide information, the video cassette recorder that performs reservation recording using KBPS (KBPS) In this case, even if the program is changed due to a broadcasting station unlike a conventional method, since a unique code is given to each program, only a corresponding program can be recorded when the code data comes in without the user having to change the time. There is an advantage.

In addition, KBPS stores the reserved recording data in the memory device even in the event of a power failure, so that it can be accurately reserved after the power failure returns.

Meanwhile, in the conventional audio signal, a tuner receives a broadcast signal received through an antenna, separates the video signal and the audio signal from the received broadcast signal, and outputs the video signal to the video signal processing system, and the audio signal is processed in the audio signal. Output to the system.

That is, the video signal processing system processes the video signal and outputs it to the monitor, and the audio signal processing system demodulates the input audio signal by mixing and modulating the main signal and the sub signal to separate the main signal and the sub signal.

At this time, a pilot signal for dividing stereo and dual is planted in the sub-signal, and the microcomputer recognizes stereo and dual to determine the type of audio signal.

However, there is a case where the stereo signal and the dual signal cannot be discriminated temporarily due to the partial rejection of the main signal as a sub signal or the noise suddenly generated in the surroundings. There was a problem that occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the foregoing, and an object of the present invention is to discriminate between a main signal and a sub-signal of an audio signal, and to determine stereo and dual discrimination of sub-signals by using KPS. Accordingly, an object of the present invention is to provide an audio signal discrimination method of a video device for accurately determining stereo and dual discrimination of sub-signals.

A feature of the present invention for achieving the above object is an audio signal discrimination method of a video device that determines stereo and dual of an audio signal using KBPS information, which is currently aired from the KBPS information. A first KBPS code reading step of reading a KBPS code for a program to be read; A first storage step of storing a KBPS code for the currently aired program read in the first KBPS code reading step; A second KBPS code reading step of reading a KBPS code for a broadcast program that is aired today from the KBPS information; A second storage step of storing a KBPS code for the today's broadcasted program read in the second KBPS code reading step; Determining the KPS code for determining whether the KBPS code for the current program stored in the first storage step belongs to the KPS code for today's aired program stored in the second storage step. step; And KBS code for the current program stored in the second storage step by the KBPS code for the current program stored in the first storage step in the KBPS code determination step. Belonging to a stereo signal and a dual determination step of discriminating stereo and dual information of an audio signal from a KBPS code for the current program.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a block diagram showing the configuration of an audio signal discrimination apparatus of a video device according to a preferred embodiment of the present invention

2 is a flowchart illustrating a method of determining an audio signal of a video device according to an exemplary embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: key input unit 11: micom

12 tuner 13 IF signal processor

14: KBPS processing unit

15: video signal processor 16: audio signal processor

17: OSD unit 18: Digitron driving unit

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

FIG. 1 is a block diagram showing the configuration of an audio signal discrimination apparatus of a video device, that is, a video cassette recorder, according to a preferred embodiment of the present invention. The key input unit 10, the microcomputer 11, and the tuner 12 are shown in FIG. ), IF signal processor 13, KBPS processor 14, video signal processor 15, audio signal processor 16, on-screen display (OSD) ( 17) and a digitron driver 18.

The key input unit 10 is composed of key metrics and applies the key signal pressed by the user to the microcomputer 12 which will be described later. The key signal loaded on the infrared carrier wave from the remote controller is normally input by using a remote controller that can be input from a remote site. It detects and outputs it to the microcomputer 12.

At this time, the microcomputer 11 outputs a control signal corresponding to the key signal applied from the key input unit 10. When the signal for channel selection is input from the key input unit 10, the PLL data for the channel selected by the user is input. Is output to the tuner 12.

That is, the tuner 12 receives the frequency signal of the channel selected by the user by controlling the oscillation frequency of the voltage control oscillator (VCO) by the oscillation frequency corresponding to the PLL data output from the microcomputer 11. Precise channel tuning is performed and the broadcast signal of the tuned channel frequency band is output to the IF signal processor 13.

In this case, the IF signal processor 13 separates the video signal and the audio signal from the broadcast signal of the channel frequency band tuned by the tuner 12, and outputs the video signal to the video signal processor 15. The signal is output to the audio signal processor 16.

Accordingly, the video signal processor 15 processes the video signal under the control of the microcomputer 16 and outputs the video signal to the OSD unit 17. The audio signal processor 16 controls the microcomputer 16 under the control of the microcomputer 16. FIG. The audio signal is processed and output to the speaker.

On the other hand, the IF signal processor 13 outputs the broadcast signal received by the tuner 12 to the KBPS processor 14, and the KBPS processor 14 receives the received broadcast. KBPS data is separated from the signal, decoded and stored, and the KPS data stored in accordance with the request of the microcomputer 15 is output to the microcomputer 15.

Accordingly, the microcomputer 15 discriminates stereo and dual of the audio signal from the KBPS data, and when stereo and dual are determined, the microcomputer 15 outputs an OSD control signal and a digitron driving signal for indicating stereo and dual. It outputs to the OSD unit 17 and the digitron driver 18.

That is, the OSD unit 17 mixes the text signal according to the OSD control of the microcomputer 15 with the image signal output from the image signal processing unit 15 and outputs it to the monitor, and the digitron driver. Reference numeral 18 denotes a combination of a grid signal and a segment signal corresponding to the digitron driving signal output from the microcomputer 15 to display stereo and dual characters on the digitron.

At this time, the detailed description of the operation of the digitron driver will be omitted since those skilled in the art can easily understand.

FIG. 2 is a flowchart for performing an audio signal discrimination method of an image device according to the present invention, that is, a video cassette recorder according to an embodiment, and will be described with reference to the block diagram shown in FIG.

The microcomputer 11 determines whether the broadcast signal is received by the tuner 12 in step 200, that is, whether a predetermined program is currently broadcasted on the monitor.

At this time, if a predetermined program is currently aired in step 200, the microcomputer 11 proceeds to step 210, and reads out a KBPS code for a program that is currently aired by the KBPS processing unit 14, In step 220, the KPS code of the current program read in step 210 is stored in the microcomputer 11.

In addition, the microcomputer 11 proceeds to step 230, and reads the KBS code for today's program from the KBPS processing unit 14, proceeds to step 240, and reads the KBIPS for each of the today's programs. Save the code (KBPS).

In addition, the microcomputer 11 proceeds to step 250, and the KBPS code for the currently aired program stored in step 220 belongs to the KBPS code for today's program stored in step 240. In step 260, the stereo signal and the dual signal of the audio signal are discriminated from the KBPS code for the current program.

That is, in step 260, if the stereo and dual codes of the sub-signal of the audio signal are loaded from the KBPS code for the current program, the microcomputer 11 may indicate that the audio signal for the current program is stereo and dual. And outputs an OSD character control signal for dual OSD display and a digitron drive signal of a character for stereo and dual to an OSD unit 17 and a digitron driver 18. To display stereo and dual of the audio signal for the current program.

As described above, the audio signal determination method of the video device according to the present invention, if the KBPS (KBPS) code for the current program belongs to the KBPS (KBPS) code for today's program KKBPS (KBPS) for the current program By discriminating the stereo and dual of the audio signal from the code, it is possible to accurately determine the stereo and dual of the audio signal.

While the invention has been shown and described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various modifications, changes and omissions can be made without departing from the spirit and scope of the invention.

Claims (1)

An audio signal discrimination method of an imaging apparatus that discriminates stereo and dual of an audio signal using KPS PS information. A first KBPS code reading step of reading a KBPS code for a currently aired program from the KBPS information; A first storage step of storing a KBPS code for the currently aired program read in the first KBPS code reading step; A second KBPS code reading step of reading a KBPS code for a broadcast program that is aired today from the KBPS information; A second storage step of storing a KBPS code for the today's broadcasted program read in the second KBPS code reading step; Determining the KPS code for determining whether the KBPS code for the current program stored in the first storage step belongs to the KPS code for today's aired program stored in the second storage step. step; And The KBPS code for the current program stored in the first storage step in the KBPS code determination step belongs to the KBPS code for today's aired program stored in the second storage step. And stereo and dual discrimination of the audio signal for discriminating stereo and dual information of the audio signal from the KBPS code for the current program.