KR20000033018A - Apparatus for generating melody at on/off time of tv - Google Patents

Abstract

PURPOSE: An apparatus for generating melody at on/off time of a TV is provided to effectively cope with unpleasant feeling of a user due to abnormal sound generated from a CRT(12). CONSTITUTION: In a conventional TV system, when a power is turned on, an abnormal sound with a cracking is generated due to the generation of static electricity on a CRT(12) surface, or when the power is turned off, an abnormal sound with a hiss is generated as a high pressure escapes from the CRT(12). These abnormal sounds don't have a high level in a small-sized TV, so a viewer may not recognize them. However, the sound level is high in a large-sized TV, so there is a problem that the viewer feels unpleasant. In the present invention, melody is generated for a predetermined time upon TV power on/off operation in order to reduce unpleasant feeling of the viewer due to the abnormal sounds generated upon the TV power on/off operation.

Description

TV melody sound output on / off

The present invention relates to a melody sound output device when the TV on / off, and more particularly, in the case of a large-scale TV, when the power is turned on / off by outputting a melody sound for a predetermined time during the abnormal sound or TV off time The present invention relates to a melody sound output device on / off of a TV to remove unpleasant emotions of a user from abnormal sounds generated in a CRT.

In general, a TV system refers to a video display device that receives broadcast channel signals transmitted to a plurality of broadcast stations and displays the received broadcast channel signals as image data. In recent years, a TV broadcast system transmits cable and satellite broadcasts together. With the user, the viewing width is getting wider. In addition, TVs are becoming larger and larger due to the development of technology to satisfy the visual needs of viewers, and audio systems are also becoming popular in response to this.

Then, referring to FIG. 1, a TV system including a tuner circuit unit 70 for receiving and tuning multi-channel TV broadcasting signals input through an antenna and a tuning function of the tuner circuit unit 70. A microcomputer 78 for controlling overall operation of the system, a voice IF amplifier 71 for amplifying an intermediate frequency signal of a high frequency information signal tuned by the tuner unit 70, and the voice IF amplification. A detector 72 for demodulating the voice signal amplified by the intermediate frequency in the unit 71, a voice signal processor 73 for processing the voice signal demodulated in the detector 72 at an audible frequency, and the tuner An image IF amplifier 75 for amplifying an intermediate frequency signal among the high frequency information signals selected by the circuit unit 70, and an image for processing the image signal amplified at an intermediate frequency in the image IF amplifier 75. It consists of a signal processing unit 76.

The rear end of the audio signal processing unit 73 is connected to the speaker 74 for outputting the signal processing audio signal to the outside, and the rear end of the video signal processing unit 76 for outputting the signal processing video signal to the outside The CRT 77 is connected. The microcomputer 78 is connected to a key input unit 79 for setting functions such as channel selection and volume according to TV viewing. And the power supply unit 80 for applying the driving power to the TV system is connected to each stage.

On the other hand, referring to the operation of the conventional TV system having the above configuration, for example, when the user wants to watch the TV broadcast signal, the user inputs the driving power from the power supply unit 80, each stage is the key input unit 79 Set the corresponding channel through. The microcomputer 78 recognizes this and inputs the control signal according to the station selection to the tuner circuit unit 70. Then, the tuner circuit unit 70 tunes a channel signal set by a user among the TV broadcasting channel signals of several channels input through the antenna, and the tuned high-frequency channel signal is a voice IF amplifier 71 and an image IF amplifier unit. 75 are each transmitted separately.

That is, the voice signal of the TV broadcast signal received by the tuner circuit unit 70 is applied to the voice IF amplifier 71 and amplified to an intermediate frequency, and the voice signal amplified by the intermediate frequency is demodulated by the detector 72. And the audio signal processor 73 is applied. At this time, the voice signal processor 73 processes the input voice signal according to an audible frequency and applies the voice signal to the speaker 74, so that the voice of the tuned broadcast channel is output through the speaker 74.

At the same time, the video signal among the TV broadcast signals received by the tuner circuit unit 70 is amplified to the intermediate frequency by the image IF amplifier 75, and the image signal amplified by the intermediate frequency is applied to the image signal processor 76. . Then, the video signal processor 76 processes the input video signal through color separation and luminance separation, and applies the same to the CRT 77 as a color signal of RGB, thereby allowing the user to output the CRT 77 together with the audio output through the speaker. You can watch the screen output through.

However, when the power is turned on in the conventional TV system as described above, an abnormal sound is generated by the static electricity generated on the surface of the CRT, and when the power is turned off, the abnormal sound that is “pucked” is generated when the power is turned off. . At this time, the abnormal sound may not be recognized by the viewer because the level is not large in the small TV, but the sound level is high in the large TV.

Therefore, the present invention was invented to solve the above problems, and in the case of large-scale active, when the power is turned on / off by outputting a melody sound for a predetermined time, the abnormal sound generated when the TV is turned on or the TV is generated when the TV is turned off. It is an object of the present invention to provide a melody sound output device on / off of a TV to remove unpleasant emotions of a user from abnormal sounds.

In order to achieve the above object, the present invention provides a voice IF amplification unit for amplifying a middle frequency signal of a high frequency information signal tuned by a tuner unit, and a voice signal amplified at an intermediate frequency in the voice IF amplification unit. A TV comprising a voice signal processing unit for demodulating and processing a voice signal, a speaker for outputting a voice signal processed by the voice signal processing unit to the outside, and a power supply unit for supplying power to each stage, wherein the TV is applied from the power supply unit. Auxiliary power unit for storing a certain amount of power by the power source, Micom to detect the interruption and supply of the power supply from the power supply unit and output a predetermined control signal, and the melody sound stored according to the control signal of the microcomputer for a predetermined time Characterized in that the melody storage unit for outputting to the speaker.

1 is a block diagram illustrating a general TV system,

2 is a block diagram of a TV system to which the present invention is applied;

Figure 3 is a flow chart illustrating a melody sound output method when the TV on / off in accordance with the present invention.

<Explanation of symbols for main parts of drawing>

1: key input 2: microcomputer

3: power supply unit 4: auxiliary power unit

5: melody storage unit 6: tuner unit

7: voice IF amplifier 8: voice signal processor

9: speaker 10: video IF amplifier

11: Image signal processor 12: CRT

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

The TV system to which the present invention is applied includes a tuner unit 6 for receiving and tuning multi-channel TV broadcast signals input through an antenna as shown in FIG. 2, and a high frequency tuned by the tuner unit 6. A voice IF amplifier 7 for amplifying a voice signal of the information signal with an intermediate frequency signal, a voice signal processor 8 for demodulating and processing a voice signal amplified by the voice IF amplifier 7 at an intermediate frequency; And a speaker 9 for outputting the voice signal processed by the voice signal processor 8 to the outside, a power supply unit 3 for supplying power to each stage, and a power source applied from the power supply unit 3. An auxiliary power supply unit 4 for storing a predetermined amount of power, a microcomputer 2 for detecting a power supply cutoff and supply state from the power supply unit 3, and controlling an overall TV operation including a control operation according thereto; According to the control signal of (2), It made a melody sound at a predetermined time speaker 9 melody storing section 5 for outputting a.

And an image IF amplifier 10 for amplifying an intermediate frequency signal among the high frequency information signals tuned by the tuner 6, and an image signal amplified at an intermediate frequency in the image IF amplifier 10. A video signal processor 11 for processing and a CRT 12 for outputting a video signal processed by the video signal processor 11 to the outside.

The microcomputer 2 is connected to a key input unit 1 for performing a function selection including TV channel and volume adjustment.

Next, a TV operation having the above configuration will be described.

First, the TV is connected to the commercial power supply line so that a constant power is applied to the power supply unit 3, and the auxiliary power supply 4 stores the constant power by the power provided from this power supply unit 3. At this time, when the user turns on the power key (not shown) of the TV, a signal corresponding thereto is applied to the microcomputer 2. The microcomputer 2 applies a predetermined control signal to the melody storage unit 5. Then, the melody storage unit 5 operates by the power supplied from the auxiliary power supply unit 4 to apply the melody sound stored for a predetermined time to the speaker 9. Therefore, the abnormal sound generated when high-voltage driving power is applied from the power supply unit 3 to the CRT 12 by setting the power key of the user is relatively reduced by the melody sound output through the speaker 9. It is so small that viewers cannot hear any abnormal sounds.

Meanwhile, when a user sets a specific channel through the key input unit 1 while power is applied to each end of the TV as described above, a signal corresponding thereto is applied to the microcomputer 2. At this time, the microcomputer 2 applies a predetermined control signal to the tuner unit 6. Accordingly, the tuner 6 selects a corresponding channel by the input set signal, and finally, a screen is output through the CRT 12 through video signal processing and audio signal processing, and audio is output through the speaker 9. The output allows the user to watch it.

At this time, when the user turns off the power key of the TV, the corresponding signal is input to the microcomputer 2. At this time, the microcomputer 2 applies a predetermined control signal to the melody storage unit 5. Then, the melody storage unit 5 receives the operating power from the auxiliary power supply unit 4 for a predetermined time and outputs the pre-stored melody sound through the speaker 9. On the other hand, during the operation as described above, when the power supply from the power supply unit 3 is cut off, that is, the high pressure of the CRT 12 is released, an abnormal sound of "puck" is generated. However, when the abnormal sound occurs, the melody is output from the melody storage unit 5 to the speaker 9, thereby reducing the discomfort of the viewer due to the abnormal sound.

That is, as shown in FIG. 3, the operation proceeds to the auxiliary power charging step S2 of charging the auxiliary power in the initial state S1 applied to the commercial power source TV. Then, in the auxiliary power charging step (S2), the auxiliary power of a predetermined amount is charged through the power supplied from the power supply unit, and the process proceeds to the TV power on determination step (S3). At this time, if it is determined in the TV power-on determination step (S3) that the power of the TV is set to the on state proceeds to the first melody sound output step (S4). In this first melody sound output step (S4), the TV is turned on and outputs the stored melody sound for a predetermined time and proceeds to the TV viewing step (S5). In the TV viewing step S5, the TV is watched by channel and volume adjustment according to the user's setting, and the TV powering off determination step S6 is performed. Therefore, if it is determined in the TV power off judging step S6 that the TV is not in the off state, it proceeds to the TV viewing step S5 to continuously perform the TV viewing operation, and as a result, the TV power is turned off. If it is determined that the state is to proceed to the second melody sound output step (S7). Therefore, in the second melody sound output step S7, the TV power is turned off and at the same time, the second melody sound is output for a predetermined time and the main loop ends.

As described above, the present invention outputs a melody sound for a certain time with the TV power-on operation, and reduces the discomfort of the viewer due to an abnormal sound generated during the power-on / off operation of the TV. Outputs the melody sound. Therefore, it is possible to effectively cope with the unpleasant emotion of the user from the abnormal sound generated in the CRT.

Claims (1)

Demodulating and demodulating the voice IF amplifier 7 which amplifies the voice signal among the high frequency information signals tuned by the tuner 1, and the voice signal amplified at the intermediate frequency by the voice IF amplifier 7; A voice signal processor 8 for processing a voice signal, a speaker 9 for outputting the voice signal processed by the voice signal processor 8 to the outside, and a power supply unit 3 for supplying power to each stage. In the old TV, Auxiliary power supply unit 4 for charging a predetermined amount of power by the power applied from the power supply unit 3, and the microcomputer to output a predetermined control signal by detecting the interruption and supply of the power supply from the power supply unit 3 ( 2) and a melody storage unit 5 which operates by the voltage charged from the auxiliary power supply unit 4 according to the control signal of the microcomputer 2 and outputs the stored melody sound to the speaker 9 for a predetermined time. Melody sound output device when the TV on / off.