KR950007811Y1 - Power supply circuit of TV receiver - Google Patents

Abstract

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Description

Power supply circuit of TV receiver

Fig. 1 is a schematic block diagram illustrating the power supply of the conventional television receiver of Fig. 1.

2 is a block diagram schematically showing a power supply circuit according to the present invention.

3 is a block diagram showing a power supply method of a television (TV) receiver applied to the present invention.

* Explanation of symbols for main parts of the drawings

12, 21: TV signal reception and control unit 12, 22: screen driving circuit unit

13, 23: voice driving circuit unit 14, 24: TV screen output unit

15, 25: TV audio output unit 16: power supply unit

26: main power supply unit 27: screen driving power switching unit

The present invention relates to a power supply circuit of a television receiver, and more particularly, to a power supply circuit of a television receiver provided with a separate switch for switching the power for driving a screen.

The conventional case will be briefly described with reference to the accompanying drawings of FIG. 1, and as shown in FIG. 1, a general television receiver receives a TV signal reception and control unit 11 and a screen drive connected to the TV signal reception and control unit, respectively. A circuit unit 12 and an audio driving circuit unit 13, a TV screen output unit 14 connected to the screen driving circuit unit 12, and a TV audio output unit 15 connected to the audio driving circuit unit 13, In addition, the power required for each of the components is adopted at the same time by the mode of the power switch of the power supply unit 16 is cut off and applied.

Therefore, since the screen output and the audio output of the television receiver are always made at the same time, and only the volume control is possible, the TV screen is output even when only the sound is heard without watching the TV screen due to the viewer's circumstances. The screen is continuously output through the unit 14.

Therefore, power consumption is unnecessarily consumed, and there is a problem that adversely affects the protection of eyesight of infants and children.

The present invention has been made to solve the above problems, to provide a power supply circuit of a television (TV) receiver having a separate switch for switching only the screen driving power in the state that power is supplied to the TV. I put it.

The present invention provides a TV signal receiving and controlling means, a screen driving circuit means connected to the TV signal receiving and control means, a TV screen output means connected to the screen driving circuit means, and the TV signal receiving and A power supply circuit of a television receiver having a TV sound output means connected to a control means for outputting a received signal as a screen and sound, the TV signal receiving and control means, a voice drive circuit means, and a TV sound output means Main power supply means for switching input power (100 V or 220 V) and converting the power appropriately to provide the power to each means; A screen driving power switching means connected between the main power supply means, the screen driving circuit means and the TV screen output means, and switching power applied from the main power supply means; Provided is a power supply circuit of a television receiver.

In addition, the present invention provides a TV signal receiving and controlling means, a screen driving circuit means connected to the TV signal receiving and control means, a TV screen output means connected to the screen driving circuit means, and the TV signal to achieve the above object. A power supply circuit of a television receiver for outputting a received signal as a screen and sound, comprising a sound driving circuit means connected to a reception control means and a TV sound output means connected to the sound driving circuit means, for receiving and controlling the TV signal. A main power supply means connected to the means, the screen driver circuit means, the audio driver circuit means, and the TV audio output means and which converts the input power source (100V or 220V) and converts it appropriately to provide to each of the means; It is connected between the main power supply means and the TV screen output means, and provides a power supply circuit for the television (TV), consisting of; screen driving power switching means for switching the power applied from the main power supply means.

Hereinafter, the present invention will be described in detail with reference to the attached FIGS. 2 and 3 as follows.

2 is a block diagram schematically illustrating a power supply circuit according to the present invention, and FIG. 3 is a block diagram showing a power supply method of a television receiver to which the present invention is applied. Denotes a screen drive circuit, 23 denotes a voice drive circuit, 24 denotes a TV screen output, 25 denotes a TV audio output, 26 denotes a main power supply, and 27 denotes a screen driving power switch.

As shown in the drawing, the message supply circuit according to the present invention includes a main power supply 26 for supplying power required for each TV component by switching input power of 100V or 220V and converting it properly, and an output terminal of the main power supply 26. And a screen driving power switching unit 27 for switching power applied to the screen driving circuit unit and the TV screen output unit.

In the preferred embodiment of the present invention, the input power switching switch of the main power supply unit 26 and the applied power switching switch of the screen driving power switching unit 27 are respectively front panel TVs as generally employed in conventional TVs. It was configured using a button attached to the switch and a known toggle switch operated by a remote controller.

As another embodiment of the present invention, only the power of the TV screen output unit of the screen driving power switching unit 27 is switched to be switched.

3 is a block diagram illustrating an exemplary embodiment of a power supply method of a television receiver to which the present invention is applied. The screen driving circuit unit 22 and the TV screen output unit may be provided through the power supply switching unit 27 for driving the screen according to the present invention. 24 shows an example in which the power applied to the switch can be arbitrarily switched.

The TV signal reception and control unit 21 shown in the drawing, the screen driving circuit unit 22 connected to the TV signal reception and control unit, the TV screen output unit 24 connected to the screen driving circuit unit 22, and the TV. The TV audio output section 25 connected to the signal reception and audio driving circuit section connected to the control section is a known circuit that constitutes a general television receiver (TV).

The TV signal reception and control unit 21 receives a TV signal in a form of a mixture of image signals and audio signals from a TV signal reception device (TV antenna, etc.), and separates the signal into a signal for screen output and a signal for audio output. In addition, the screen driving circuit unit 22 processes the image signal separated through the TV signal receiving and control unit 21 to be output through the TV screen output unit 24, and the audio driving circuit unit 23 is the TV The audio signal separated by the signal reception and control unit 21 is processed to be output through the TV audio output unit 25.

The main power supply unit 26 supplies power required for the TV signal reception and control unit, the audio driver circuit unit, and the TV audio output unit so that the received audio signal is always output when the main power switch is turned on. do.

The screen driving power switching unit 27 is connected between the main power supply unit 26, the screen driving circuit unit 22, and the TV screen output unit 24 to arbitrarily switch the screen driving power applied from the main power supply unit. It is configured to.

Thus, when the viewer does not need to see the screen while watching TV, and only wants to turn off the screen output only for the purpose of protecting the eyesight of the infant or child, the screen driving power is provided separately. Using the switching unit 27 to achieve the desired purpose by a simple operation.

Therefore, the present invention as described above has the effect of reducing the power consumption by switching the power of the screen drive unit according to the viewer's situation when watching TV, to protect the eyesight of infants and the like.

Claims (2)

TV signal reception and control means 21, screen drive circuit means 22 connected to the TV signal reception and control means, TV screen output means 24 connected to the screen drive circuit means, and the TV signal reception and In the power supply circuit of a television receiver having a sound driving circuit means 23 connected to a control means and a TV sound output means 25 connected to the sound driving circuit means for outputting a received signal as a picture and sound. Connected to the TV signal receiving and controlling means 21, the audio driving circuit means 23, and the TV audio output means 25. A main power supply for switching the input power source 110V or 220V and converting it appropriately to be provided to the respective means. Supply means 26; A screen driving power switching means (27) connected between the main power supply means, the screen driving circuit means and the TV screen output means, and for switching power applied from the main power supply means; A power supply circuit of a television receiver, characterized in that consisting of. TV signal reception and control means 21, screen drive circuit means 22 connected between the TV signal reception and control means, TV screen output means 24 connected to the screen drive circuit means, and the TV signal reception and In the power supply circuit of a television receiver for outputting a signal received by screen and sound by bending the audio driving circuit means 23 connected to the control means and the TV audio output means 25 connected to the audio driving circuit means, It is connected to the TV signal reception and control means 21, the screen driver circuit means 22, the audio driver circuit means 23, and the TV audio output means 25, and transfers the input power (100V or 220V) and converts it properly. Main power supply means (26) provided to the respective means; A screen driving power switching means (27) connected between the main power supply means and the TV screen output means, for switching power applied from the main power supply means; A power supply circuit of a television receiver, characterized in that consisting of.