KR19980023723U - Voice Multiple Switching Device According to Voice Method of Television - Google Patents

Abstract

The present invention provides a voice multiplexing device according to a voice type of a television which can automatically switch the voice output side to a corresponding voice multiplexer side by recognizing the domestic multiplexed and the American multiplexed multiplexed signals. do.

Accordingly, the present invention is a voice signal according to the voice multi-casting tuned through the tuner 12 and the voice processing means 20, 22 is switched by the voice multiple switch unit 24, the first voice multiplexing system. The first voice multi-processing unit 28 for multi-speech processing and the second voice multi-processing unit 30 for multi-speech processing in the second voice multi-stage process are supplied to the multi-speech processing unit. In a television having a voice multiplexing function capable of multi-voice playback, a first recognition signal detector (32) for detecting a first recognition signal from a voice signal according to a first voice multiplexing method from the first voice multiplexer (28) From the second recognition signal detection unit 34, the first recognition signal detection unit 34 for detecting a second recognition signal in the voice signal according to the second voice multiplexing method from the second voice multiple processing unit 30 Detection result of The microcomputer 38 controls the output side of the voice output unit 26 to selectively output the voice signal through the first voice multiple processor 28 or the second voice multiple processor 30. Selective switch unit 40 for switching operation such that the first audio multiple processor 28 or the second audio multiple processor 30 is selectively switched to the voice output unit 26 by the switching control of the microcomputer 38. Characterized in that provided with.

Description

Voice Multiple Switching Device According to Voice Method of Television

The present invention relates to a voice multiple switching device according to a voice method of a television, and more particularly, to automatically recognize a voice multi-broadcasting of a domestic method and a voice multi-broadcasting of an American method having a different voice multiplying method in a television. The present invention relates to an audio multiple switching device according to the audio system of a television which can switch the output state of a signal.

In general, in a television system in which a predetermined channel is selected among a plurality of channels transmitted from a plurality of television broadcasting stations, and a video signal is reproduced through audio / video processing, the audio signal of the audio signal according to the television broadcasting of the selected channel is used. Correspondingly, voice processing is performed.

In general, the voice system for the audio signal of the television broadcast is provided with a voice multiplex system, which is a stereo broadcast or bilingual system by simultaneously transmitting another voice signal on a voice carrier of a television broadcast. A method of adding a second voice carrier in addition to the existing voice carrier while multicasting a subcarrier modulated with a dual carrier system and a negative voice to a conventional voice carrier. In subcarrier system, it can be classified into two-carrier, AM-FM, analog-based by FM-FM and digital by DPSK.

In the multi-carrier method, the multi-carrier method is used in Korea, Germany, and China. In the Korean method, a second voice carrier is dropped by 14.25 fH (ie, fH is 15.7342 KHz) in addition to the existing voice carrier. The pilot signal is transmitted to generate a pilot signal for determining whether the voice signal is multiplied by the audio, and the subcarrier of 3.5 fH is generated as a 50% AM-modulated control signal. It is excellent in left / right separation in the state and excellent in crosstalk and S / N ratio in two languages.

In the voice multiplex method, the AM-FM method is adopted in the Americas, such as the United States. In the stereo method, 2fH is used as a subcarrier and fH is a pilot signal, while bilingual broadcasting uses SAP (Second). The second carrier 5fH, referred to as an Audio Program, is transmitted as a second FM channel modulated by FM, and a noise attenuating circuit is employed to improve the S / N ratio for the second subchannel.

On the other hand, the television which reproduces the voice signal of the voice multi-broadcast together with the video signal of the television broadcast is a plurality of voices to enable the voice multi-processing compatible according to the different voice multiplexing system for each region in the global export trend of the product It has a built-in multiprocessor.

However, in the case of a plurality of voice multiplexers that are built to be compatible with multiple voice multiplexing in accordance with various voice multiplexing methods, the voice multiplexing method recognizes the voice multiplexing method of a voice signal according to a predetermined channel. It is necessary to automatically switch to the voice output unit so that the voice can be reproduced normally by properly processing the signal through the voice multiprocessor that reproduces the signal.

The present invention has been made in view of the above circumstances, and it is possible to automatically switch the voice output side to the corresponding voice multiple processor side by recognizing the voice multiplex signals of the domestic mode and the American type which are each transmitted in different voice multiple modes. An object of the present invention is to provide a voice multiple switching device according to the method.

According to the voice multiple switching device according to the voice method of the television according to the present invention in order to achieve the above object, the voice signal according to the voice multi-casting that is tuned through the tuner and the voice processing through the voice processing means is a voice multiple switch unit Is supplied to the first audio multi-processing unit which is switched by the first voice multi-process and multi-speech processing by the second voice multi-process. A television having a voice multiplexing function capable of reproducing, comprising: a first recognition signal detector for detecting a first recognition signal from a voice signal according to a first voice multiplexing method from the first voice multiplexer, from the second audio multiplexer; A second recognition signal detector for detecting a second recognition signal from a voice signal according to the second voice multiplexing scheme of A microcomputer for controlling an output side of the voice output unit to selectively output a voice signal through the first or second voice multiplexer according to the detection result of the recognition signal from the expression signal detector; Provides an audio multiple switching apparatus according to the audio system of a television comprising a selection switch unit for switching so that the first audio multiple processing unit or the second audio multiple processing unit is selectively switched to the audio output unit by the switching control of .

According to the present invention configured as described above, the audio multiple signals having a predetermined voice multiplexing method according to a predetermined channel selected from a television, that is, a domestic method such as a 2-carrier method or an Americas method such as an AM-FM method, are different from each other. In the case of voice multiplexing through a plurality of voice multiplexing units which process a voice multiplexing signal of the voice multiplexing method, the voice multiprocessing unit, on which the recognition signal included in the voice multiplexing signal, i. Is switched to enable normal audio reproduction.

1 is a block diagram showing a voice multiple switching apparatus according to the voice system of the present invention;

2 is a flowchart illustrating an operation according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: receiving antenna, 12: tuner,

14: video IF unit, 16: video signal processing unit,

18: video output unit, 20: audio IF unit,

22: voice amplifier, 24: voice multiple switch,

26: audio output unit, 28: the first audio multiple processing unit,

30: second speech multiple processing unit, 32, 34: recognition signal detection unit,

36: function setting section, 38: microcomputer,

40: selection switch section.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, Fig. 1 is a block diagram showing a voice multiple switching device according to the voice system of a television according to the present invention, wherein reference numeral 12 in the device of the present invention includes a predetermined voice multiple signal from a microcomputer 38 to be described later. A channel is tuned in a plurality of channels that are received in the receiving antenna 10 by receiving channel tuning data VT for tuning a channel, and mixed with a local oscillation frequency generated by the channel tuning data VT. The tuner outputs an intermediate frequency signal.

Further, reference numeral 14 denotes an image IF unit which separates the video intermediate frequency signal of the tuned television broadcast signal and amplifies the video intermediate frequency, and 16 denotes an image amplification level capable of processing the video signal of the intermediate frequency amplified television broadcast. An image signal processing unit which amplifies and separates the luminance signal and the chrominance signal, synthesizes the composite image signal through luminance adjustment and color demodulation, and outputs the composite image signal. Indicates an image output unit.

Reference numeral 20 denotes an audio IF unit which separates the audio intermediate frequency signal of the tuned television broadcasting and amplifies the audio intermediate frequency, and 22 denotes an amplification level of the intermediate frequency amplified audio intermediate frequency signal to an amplification level capable of reproduction processing. Show negative amplifier.

Reference numeral 24 denotes a multiplex switch for controlling switching by a microcomputer 38, which will be described later, to perform a selective switching operation for reproducing the voice by normal voice processing or reproducing the voice in the voice multiple state by the voice multiprocess. 26 denotes a first voice multiple processing unit 28 to be described later through the selective switching operation of the selection switch unit 40, which will be described later, in addition to the power amplification operation of the normal voice signal through the voice multiple switch unit 24. Or an audio output unit for power-amplifying the audio multiplex signal from the second audio multiplex processing unit 30 and reproducing the voice.

Further, reference numeral 28 denotes a first voice multiple processing unit which performs multiplex processing of a voice signal having a predetermined voice multiplexing method from the voice amplifier 32 through the voice multiple switch unit 24, wherein the first voice multiplexing unit is used. The multi-processing unit 28 performs voice multi-processing for the voice multi-signal of the domestic method having a 2-carrier method, and 30 denotes a predetermined voice from the voice amplifying unit 32 through the voice multi-switching unit 24. As a second voice multiple processing unit for multi-speech voice signals having a multi-method, the second voice multi-processing unit 30 performs voice multi-processing for voice multi-signals of the Americas type with AM-FM.

Reference numeral 32 denotes a first recognition signal detection unit which detects a pilot signal which is included in the audio signal from the first audio multiplex processing unit 28 and is transmitted in the state of AM-modulated 3.5 fH subcarrier at 50%. 34 denotes a second recognition signal detection unit for detecting a pilot signal transmitted at 5 KHz at fH between the main channel and the sub channel from the second voice processing unit 30.

Further, reference numeral 36 is composed of a matrix button unit provided in a remote control unit for remote control or a predetermined control panel of the main body, and sets a function to perform key operation for reproducing an audio multiple signal according to the selected television broadcast of a predetermined channel in a multiplex manner. Represents wealth.

Further, reference numeral 38 generates a first switching control signal SC1 for controlling switching of the voice multiple switch unit 24 according to a key operation for reproducing the voice multiplex method by the function setting unit 36. In addition, according to whether the pilot signal from the first recognition signal detector 32 or the second recognition signal detector 34 is detected, the first voice multiple processor 28 or the second voice multiple processor 30 outputs a voice. A microcomputer for generating the second switching control signal SC2 for controlling switching to the side 26 is shown.

Further, reference numeral 40 denotes a voice from the first audio multiple processing unit 28 through the first terminal A, whose switching operation is controlled by the second switch control signal SC2 from the microcomputer 38. Represents a selection switch unit which is switched so that the multiplexed voice signal or the voice multiplexed voice signal from the second voice multiplexer 30 through the second terminal B is supplied to the voice output unit 26 side. .

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 2.

First, when a predetermined channel is selected by the function setting unit 36 in step 45, the microcomputer 38 generates channel tuning data VT for tuning of the corresponding channel so that the predetermined channel is tuned by the tuner 12. By doing so, the video signal according to the television broadcasting of the corresponding channel is reproduced through the video processing operation of the video IF unit 14, the video signal processing unit 16, and the video output unit 18. The voice processing by the IF unit 20, the voice amplifier 22, and the voice output unit 26 is enabled.

At this time, in step 46, when the function setting unit 36 performs key operation for voice multiplex processing on the voice signal of the channel selected by the function setting unit 36, the microcomputer 38 switches the voice multiplex switch unit 24. The first switching control signal SC1 is applied to the first and second voice multiplexing units 28 and 30 so that the voice signals of the tuned channel are applied to the first and second voice multiplexing units 28 and 30. The recognition signal detectors 32 and 34 detect the pilot signals included in the audio multiplex signals from the first and second audio multiplexers 28 and 30.

On the other hand, in multi-system 47, the microcomputer 38 detects the pilot signal included in the voice multiplex signal from the first recognition signal detector 32 to determine whether the voice multiplexed signal is a domestic system having a two-carrier type. Judge.

As a result of the determination of step 47, when the pilot signal is detected by the first recognition signal detector 32, it is determined that the voice multiplex signal of the tuned channel is a domestic method, and the control proceeds to step 48 to select switch unit. By generating a second switching control signal SC2 for controlling switching to the first terminal A side at 40, the voice multiplexed voice signal from the first voice multiplexer 28 is outputted to the voice output unit. The power is amplified through 26 to enable voice reproduction.

However, when the determination result of the step 47 determines that the pilot signal is not detected by the first recognition signal detector 32 and the pilot signal is detected by the second recognition signal detector 32, the control is performed in step 49. Proceeds to the second switch control signal (SC2) for switching the selection switch unit 40 to the second terminal (B) side by the voice multiplexing signal from the second voice multiplexer 30 Through (26), the voice can be reproduced by the voice multi-method of the Americas.

According to the present invention made as described above, the voice output stage is switched to the voice multiprocessor side in which a pilot signal for the voice multiple signal is detected on a television capable of compatiblely reproducing voice signals of different voice multiplex systems for each region. As the reproduction can be performed in a manner, it is possible to enable more stable compatible reproduction of voice signals having different voice multiplexing methods.

Claims (1)

The voice signal according to the voice multiple broadcasting, which is tuned through the tuner 12 and voice processed through the voice processing means 20 and 22, is switched by the voice multiple switch unit 24 to perform voice multiple processing in the first voice multiplexing method. A plurality of voices can be reproduced through the voice output unit 26 by being supplied in common to the first voice multiple processing unit 28 and the second voice multiple processing unit 30 which processes the voice multiplexing in the second voice multiple system. In the television with a voice multiple function, A first recognition signal detector 32 for detecting a first recognition signal from a voice signal according to the first voice multiplexing method from the first voice multiple processor 28; A second recognition signal detector 34 detecting a second recognition signal from a voice signal according to the second voice multiplexing method from the second voice multiple processor 30; According to the detection result of the recognition signal from the first and the first recognition signal detection unit 34, the output side by the voice output unit 26, the first audio multiple processor 28 or the second audio multiple processor 30 A microcomputer 38 for selectively outputting a voice signal through a voice; Selection switch 40 for switching operation so that the first audio multiple processor 28 or the second audio multiple processor 30 is selectively switched to the voice output unit 26 by switching control of the microcomputer 38. Voice multiple switching device according to the audio system of the television, characterized in that comprising a).