KR100283141B1 - TV pop screen sound system - Google Patents

Abstract

The present invention relates to a television pop screen sound system, wherein a pop screen sound signal processor (36) for processing a sound signal among signals transmitted from the pop tuner (12) for processing the pop screen, and the main terminal sound of the main terminal sound. A switch for selectively connecting either the first fixed terminal to be transmitted and the second fixed terminal to which the POP screen sound is transmitted, the base is connected to the microcomputer through a resistor, the emitter is grounded, and the collector is connected to the power supply voltage. And a transistor connected to one side of the diode, the headphone sound switch unit 37 for selectively transmitting the pop screen sound or the main screen sound to the headphone according to a user's selection, and the sound quality of the sound output from the headphone. A headphone sound control unit 38 for adjusting the volume is provided to increase the selection of viewers and To the effect that can be advanced television.

Description

TV pop screen sound system

1 is a block diagram of a TV with a built-in POP according to the prior art.

2 is a block diagram of a sound system for POP according to the present invention.

3 is a detailed circuit diagram of the headphone sound switch of FIG. 2;

* Explanation of symbols for main parts of the drawings

31: POP tuner 35: POP signal sound central signal processing unit

35 ': POP screen sound processor 36: POP screen sound signal processor

37: headphone sound switch 38: headphone sound control

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in POP (Picture Out Picture) device for television, and more particularly, to a POP picture sound system of a TV for selecting a separate desired picture from among POP pictures so that sound can be heard through headphones. It is about.

Conventional POP-embedded televisions have a main screen tuner (1) for processing video signals of a main screen, a main video VIF (2), and a main screen as shown in FIG. Color decoder (3), video switch unit (4), R / G / B (Red / Green / Blue) processor (5), and CPT (ComPacTron) tube (6) and main screen for processing sound of main screen Screen SIF (Sound Intermediate Frequency) unit 7, sound processor 8, tone control unit 9, main screen speaker 10 and main screen headphones 11, and POP screen for processing video signals of POP screen A tuner 12, a VIF unit 13 of a POP screen, a POP screen color decoder 14, and a POP screen processor 15.

When the intermediate frequency signal IF is output from the main picture tuner 1, the built-in POP television configured as described above is connected to the video switch part 4 via the main picture VIF part 2 and the main picture color decoder 3. The IF signal sent from the POP screen tuner 12 is immediately amplified by being sent to the POP screen VIF unit 13, and then the main screen and the POP screen are displayed on the CPT pipe 6, and in the case of sound The IF signal output from the main picture tuner 1 is sent back to the speaker 10 or the headphone 11 via the main picture SIF unit 9, the sound processor 8 and the tone control unit 9 again.

Since such conventional POP-embedded television only has a sound system for processing only the main screen, only the main screen sound can be listened to, thus narrowing the viewers' choice.

In particular, in the case of a large-screen television, there are four screens that can be viewed by viewers, including the main screen, while sound can only listen to one main screen, which is very inconvenient.

Accordingly, an object of the present invention is to provide a POP screen sound system of a television that can listen to the sound of the POP screen in order to alleviate the inconvenience described above.

In order to achieve the above object, the present invention provides a POP screen sound signal processor and a headphone sound for processing sound of a POP screen, in addition to a device for processing an image and a sound of a conventional main screen and a device for processing an image of a POP screen. And a switch unit and a headphone sound control unit.

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

As shown in FIG. 2, the television POP screen sound system of the present invention has the same video signal processing unit as that of FIG. 1, but the POP screen sound system is the POP screen SIF unit 35 and the POP screen sound. POP screen sound signal processing section 36 composed of a processor 35 ', a headphone sound switch section 37, and a headphone sound control section 35.

The IF signal output from the main picture tuner 1 passes through the main picture SIF unit 7 and one of the main picture sound processors 8 through the main picture tone control unit 9 for main picture sound. 10 is sent to the head, and the other is sent to the headphone sound switch 37.

In this case, the IF signal output to the POP screen tuner 12 is divided into left and right and sent to the headphone sound switch unit 37 through a POP screen sound processor 35 'configured to create stereo sound of the headphones. The sound switch unit 37 passes through a headphone sound control unit 38 which controls the size and tone of the POP screen sound by the user's selection by avoiding collision with the main screen headphone sound, and thus the sound of the desired POP screen among the three POP screens. Modulate it so you can hear it.

Here, the headphone sound switch unit 37, as shown in Figure 3, the circuit for applying sound to the left and right of the headphone is the same connection with each other, so that only the left side, according to the control signal of the microcomputer, A first switch S1 for selectively connecting any one of a first fixed terminal to which the main terminal sound is transmitted and a second fixed terminal to which the POP screen sound is transmitted; and a base connected to the microcomputer through a resistor R15; The emitter is grounded, the collector is connected to the power supply voltage, and at the same time, the first transistor Q1 connected to one side of the diode is connected, so that the two movable terminals l1, l2, r1, The fixed terminals l3 and r3 are shorted or opened between r2) to select the main picture sound or the POP picture sound.

Therefore, according to the present invention, it is possible to expand the selection of viewers and at the same time improve the quality of television.

Claims (2)

In a pop-in built-in television, a pop screen sound signal processor (36) for processing sound signals among signals transmitted from the pop tuner (12) to process a pop screen, and the pop screen sound signal processor (35). And a headphone sound switch unit 37 connected to the main screen sound signal processor for selectively transmitting a pop screen sound or a main screen sound to headphones according to a user's selection, and adjusting the sound quality and volume of the sound output from the headphones. And a headphone sound control unit (38). The switch of claim 1, wherein the headphone sound switch unit comprises: a switch for selectively connecting one of a first fixed terminal through which the main picture sound is transmitted and a second fixed terminal through which the POP picture sound is transmitted; A television pop-up sound system, comprising: a transistor connected to a microcomputer, an emitter grounded, and a collector connected to a power supply voltage and simultaneously connected to one side of a diode.