KR0144914B1 - Apparatus and method for pre-heating crt - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact disc player integrated television receiver, and more particularly, to a CRT preheating method and apparatus for supplying an auxiliary power of a heater to a CRT to preheat the CRT and then supplying the main power of the heater to the CRT when a key input signal is input. .

The method of the present invention comprises a first step of receiving the AC power to generate the auxiliary power of the heater and the power of each component; A second step of generating a main power source for driving the heater and a power source of the video signal processor in accordance with a predetermined control signal CC2; Generating a predetermined control signal CC1 according to whether a key input signal is input; A fourth step of switching an auxiliary power supply of the heater output in the first step and a main power supply of the heater output in the second step according to the control signal CC1 generated in the third step; In response to the control signal CC1 output in the third step, the auxiliary power of the heater output in the first step is turned on / off to generate a predetermined control signal CC2 for generating the main power of the heater. The fifth step is made.

Therefore, the present invention has the effect that the OSD is displayed on the CRT immediately after the key input.

Description

Cathode ray tube (CRT) preheating method and device

1 is a front view of one embodiment of a compact disc player integrated television receiver according to the present invention;

FIG. 2 is a diagram for explaining a key arrangement of a control box of the television receiver integrated television receiver of FIG.

3 is a circuit block diagram of a compact disc player integrated television receiver according to the present invention.

4 is a circuit block diagram of a preferred embodiment of the compact disc player of FIG.

5 is a block diagram of a CRT preheater in a compact television player integrated television receiver according to the present invention;

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver integrated with a compact disc player. In particular, in all products displaying an OSD using a cathode ray tube (CRT), the time required for preheating the CRT is reduced, and an OSD is input when a key input signal is input. CRT preheating method and apparatus for displaying a CRT on a CRT.

The present applicant invents and sells a compact disc song accompaniment device, and also invents and sells a so-called karaoke television receiver.

The compact disc song accompaniment device, also known as the CD-OK device, stores about 2,000 song accompaniment and lyrics and about 4,000 still images on a single compact disc, and plays back the accompaniment and song lyrics data of the selected song. Plays back the displayed screen as background.

Karaoke TV receivers store over 400 lyrics, accompaniment data and dozens of graphic image data in a semiconductor memory device, and provide CDG-level karaoke.

Since CD-OK has no display unit, it is inconvenient to use because the video and audio signals reproduced by being connected to the external video connection jack of the television receiver through the audio and video output terminals are displayed on the CRT and output to the speaker.

The karaoke TV receiver is integrated with the TV, but the number of selectable songs is about 1/5 less than the CD-OK, and the background level is not diverse. .

In addition, diversification of compact discs such as CD digital audio, CDG, CDV, and the like, and their respective players have been commercialized and introduced.

Therefore, consumers have to purchase each player each time a new product is released, so there is a problem that the burden of product purchase cost increases.

In addition, since each product having similar functions is provided and installed, the difficulty of securing an installation space and the external connection lines for interconnecting these products are complicated, resulting in aesthetic problems.

In addition, since each product has one dedicated remote control, there is an inconvenience that a user must select and use a remote control suitable for the product at that time.

It is therefore an object of the present invention to provide a compact disc player integrated television receiver in order to solve such problems of the prior art.

In addition, in a product using a CRT, the CRT needs to be preheated to a predetermined temperature to display an OSD. In the conventional method, it takes 8 to 10 seconds to start preheating the CRT from the moment of inputting a key input signal. Since the OSD does not appear on the CRT during the time that the CRT is warmed up, power consumption is large because large power is supplied to the CRT.

Therefore, another object of the present invention is to preheat the CRT by supplying the auxiliary power of the heater to the CRT in order to solve the above-mentioned problems, and when the key input signal is input, the CRT for supplying the main power of the heater to the CRT to instantly display the OSD. It is to provide a preheating method and apparatus.

In order to achieve the above object, a compact disc player integrated television receiver of the present invention comprises: a television signal receiver for receiving a tuned television signal and detecting and outputting a video signal and an audio signal from the received signal; A compact disc player having a song accompaniment function that inputs a data input first control signal and a remote control input second control signal and reads data from at least one type of compact disc and outputs a video signal and an audio signal when the two control signals match. part; A video signal processing unit for selectively inputting the video signal of the television signal receiving unit and the video signal of the compact disc player unit to process the signal and to display the processed signal through the display means; An audio signal processing unit for selectively inputting an audio signal of the television signal receiving unit and an audio signal of the compact disc player unit to process the signal and output the processed signal as sound through sound conversion means; A power supply unit receiving AC power and generating a power signal for a television power signal and a compact disc player unit, respectively; And controlling the power supply of the power supply unit, controlling the signal selection of the video signal processing unit and the audio signal processing unit by setting the selected television or compact disc mode in response to a control signal input through a control box or a remote controller. And a television control unit for providing a control signal.

The video signal processor comprises first selecting means for selecting a video signal from the television signal receiver and a video signal from the compact disc player and outputting the video signal to the video signal processor; A video processor which processes the video signal input through the selection means and outputs an RGB signal; A CRT circuit unit for inputting RGB to display a video signal on the CRT; And second selection means for connecting the video signal of the television signal receiving section to the external video input terminal of the compact disc player section in the background selection in the compact disc mode.

The audio signal processor includes an amplifier for amplifying the audio signal of the television signal receiver to a predetermined level; Mixing means for mixing a microphone input signal with an audio signal of the compact disc player; Third selecting means for selecting and outputting an audio signal of the amplifier and an audio signal of the mixing means; And an audio output unit which inputs the audio signal selected by the third selecting means to drive the speaker.

The television signal receiving section includes fourth selecting means for selecting and outputting the received video signal of the television and at least one video signal input externally.

The output of the first selecting means is also provided as a video signal for an external monitor.

The audio signal processor includes fifth selecting means for selecting and outputting an audio signal and at least one external audio signal to be input to the television signal receiver.

The output of the third selecting means is also provided as an audio signal for an external monitor.

In order to achieve the above object, the CRT preheating apparatus according to the present invention is an A / V product having a CRT, a heater for heating the CRT, and a video signal processor, wherein the auxiliary power supply of the heater is supplied with AC power. Generating a power supply unit for supplying power to each component of the A / V product; A flyback transformer (FBT) for generating a main power source for driving the heater and a power source of the video signal processor according to a predetermined control signal CC2; A first switch SWI for switching the auxiliary power of the heater output from the transformer power unit and the main power of the heater output from the flyback transformer FBT according to a predetermined control signal CC1; A second switch (SW2) for turning on / off the auxiliary power of the heater output from the transformer power unit according to the control signal (CC1); A horizontal drive pulse generator for generating a horizontal drive pulse according to the output of the second switch SW2; A horizontal driver configured to input a horizontal drive pulse generated by the horizontal drive pulse generator to generate a predetermined control signal CC2 for driving the flyback transformer; And a microprocessor for generating a predetermined control signal CC1 for controlling the first switch and the second switch according to whether a key input signal is input.

The microprocessor switches the first switch SW1 to the auxiliary power supply of the heater when there is no key input signal according to whether the key input signal is input, turns off the second switch, and when there is a key input signal. The first switch SW1 is switched to the main power supply of the heater, and a predetermined control signal CC1 for turning on the second switch SW2 is generated.

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

1 shows a front view of a CD-TV composite product according to the present invention.

In Figure 1, 10 is a CRT, 12 is a speaker, 14 is a microphone jack, 16 is a disc door, 18 is an open / close button, 20 is a remote control reception window, 22 is a power indicator lamp, 24 is a main power button and 26 is a control It is a box.

2 shows the arrangement of the keys installed in the control box 20.

The keys are largely divided into a television control key section 28 and a CD control key section 30.

The television control key 28 includes a channel up / down key, a sound up / down key, a menu key, and a TV / VID EO key.

CD control key 30 includes pitch up / down key, tempo up / down key, confirmation key, reservation key, cancel key, 0-9 number keys, skip key, scorecard, male / female key, background selection key. , Play key, stop key, music selection up / down key, CD on / off key, menu key, and the like.

3 shows a circuit block diagram of a preferred embodiment of the CD-TV composite product according to the present invention.

3 is a television signal receiver 32 for receiving a largely tuned television signal, detecting and outputting a video signal and an audio signal from the received signal, a first control signal C1 inputted with data, and a second control inputted with a remote controller. A compact disc player unit 34 having a song accompaniment function for inputting a signal C2 and reading data from at least one type of compact disc and outputting a video signal and an audio signal when the two control signals coincide with each other, and a television signal receiver 32 Video signal processing unit for selectively inputting the video signal V1 and the video signal V2 of the compact disc player unit 34 for signal processing and displaying the processed signal through a display unit 10 such as a CRT or LCD. 36, the audio signal A1 of the television signal receiving section 32 and the audio signal A2 of the compact disc player section 34 are selectively input The power signal of the TV power signal Vtv and the compact disc player 34 by receiving AC power and an audio signal processor 38 for outputting the processed signal as sound through a sound conversion means such as a speaker 12. Power supply unit 40 for generating Vcd, respectively, and power supply for each unit of power supply unit 40 for setting the selected television or compact disc mode in response to a control signal input through control box 34 or remote control 27. And a television control unit 42 for controlling signal selection of the video signal processing unit 36 and the audio signal processing unit 38 and providing the first control signal C1 to the compact disc player 34.

The video signal processor 36 includes first selecting means 44 for selecting and outputting the video signal V1 of the television signal receiver 32 and the video signal V2 of the compact disc player 34, and the first selecting means. A video processor 46 for processing the video signal input through the 44 and outputting an RGB signal, a CRT circuit unit 48 for inputting the RGB signal to display the video signal on the CRT, and background selection in the compact disc mode. And second selecting means 50 for connecting the video signal V1 of the television signal receiving section 32 to the external video input terminal EX of the compact disc player 34.

The output of the first selection means 44 is also provided to a video output jack MV for an external monitor.

The video processor 46 synchronizes the comb filter 52 for separating the video signal into a color signal and a luminance signal, and a selector 54 for selecting a color / luminance signal separated from the S-VHS signal input from an external connection jack. A signal processor 56 which performs separation, luminance signal processing, color signal processing, and synthesizes the OSD signal with the processed RGB signal to generate RGB output, and the RGB signal and signal processing means 56 provided from the compact disc player 34 And an RGB mixer 58 for mixing the RGB signals processed at.

The audio signal processing unit 38 includes an amplifier 60 for amplifying the audio signal A1 of the television signal receiving unit 32 from 0.4 Vrms to 2 Vrms, and a microphone (A) to the audio signal A2 of the compact disc player 34. 15, a third selector 62 for selecting and outputting the mixing means 70 for mixing the input signal, an audio signal of the amplifier 60 and an audio signal of the mixing means 70, and a third selector 62. A surround processor 64 for inputting an audio signal selected by the < RTI ID = 0.0 >) < / RTI > and an audio output unit 66 for driving the speaker 12 by echo processing the surround audio signal.

The reason for the amplification in the amplifier 60 is to unify to one level in order to prevent the volume from being adjusted at that time because the level of the audio signal of the television and the level of the audio signal of the CD reproduction sound are different from each other.

The audio signal is two channels of L / R.

The output of the third selector 62 is also provided to an audio output jack MA for an external monitor.

68 is an audio input amplifier.

The television signal receiving unit 32 selects and outputs fourth signal selection means 74 and a signal processor 76 for selecting and outputting the received video signal of the television and at least one externally input video signal V11, V12, S-VHS. Include.

The signal processor 76 inputs preset data to tune the television broadcast channel and demodulates the television signal received through the tuned channel to generate a video signal and an audio signal. The audio signal processor 38 includes fifth selecting means 72 for selecting and outputting the audio signal of the television signal receiver 32 input and at least one external audio signal A11, A12, S-A.

The television control unit 42 includes a microprocessor 84, a remote control signal receiver 86, a control box 26, and a remote control 27.

The microprocessor 84 inputs a synchronization signal (H / V) from the signal processor 56 of the video processor 46 and provides an OSD signal to the signal processor 56.

In addition, the microprocessor 84 generates the switching signals X1-X6 of the selection means.

The remote controller signal receiver 86 receives a remote controller signal emitted from the control box 26 or the remote controller 27 and provides the received signal to the microprocessor 84 and the compact disc player 34 in common.

The power supply unit 40 inputs a commercial exchange in the primary power supply unit 78 to generate a primary power supply voltage, and provides a standby power supply voltage to the television control unit 42.

The television power supply unit 80 generates various power supply voltages for the television signal receiver 32, the video signal processor 36, and the audio signal processor 38.

The CD power supply unit 82 generates various power supply voltages of the compact disc player 34 in accordance with the power control signal PW of the television control unit 42.

4 is a circuit block diagram of one preferred embodiment of the compact disc player 34. As shown in FIG.

102 is a compact disc, 104 is an optical pickup, 106 is a spindle motor, 108 is a high frequency signal amplifier, 110 is a servo circuit, 112 is a digital signal processor, 114 is a main controller, 116 is a sub-controller, 118 is a disc tray driving circuit, 120 A CDG decoder, 122 a CD-ROM decoder, 124 a CD-OK decoder, 126 a video selector, 128 a digital analog converter, and 130 an audio selector.

The signal reproduced from the disc is output from the digital signal processor 112 to the CD.

Here, if the disc is a CDG disc, the sub code is transmitted to the CDG decoder 120 so that the NTSC encoded graphic signal is reproduced and output.

At this time, the CD signal is reproduced and output through the digital analog converter 128.

In the case of a CD-OK disc, the video selector selects a video signal to be reproduced by the CD-OK decoder 124, and selects an output of the CDG.

The audio selector 130 selects an accompaniment signal output from the CD-OK decoder 124 in the case of a CD-OK disc and otherwise selects an audio signal output from the digital analog converter 128.

The CD-OK decoder 124 receives the data obtained from the CD-ROM decoder 122, and outputs the MIDI data as an accompaniment signal through a built-in sound source integrated circuit. The RGB video data of the background image having the lyrics data superimposed is an RGB signal. It can be output as a video signal or output via the built-in NTST encoder.

In addition, the CD-OK decoder 124 may input an external video signal to output an external video signal having lyrics superimposed as a video signal.

In addition, as shown in FIG. 3, the signal input through the microphone 15 is amplified by the amplifier 88, and the amplified signal is detected by the microphone input detecting means 90, and the detected signal is CD-. The OK decoder 124 receives and performs a score determination and loads the result on a video signal.

The main controller 114 controls the whole of the system and controls the switching of the video selector 126 and the audio selector 130.

The sub-controller 116 exchanges the first control signal C1 in the form of data with the television control unit 42 via the data line and also receives the second control signal C2 received from the remote control signal receiver 86. .

The sub-control unit 116 compares the first and second control signals (C1, C2) and if the two signals coincide with each other and recognizes the limoncon signal as a legitimate command signal to perform the corresponding command.

5 is a circuit block diagram of a CRT preheater in the television receiver integrated with a compact disc player according to the present invention.

The transformer power unit 400 generates AC auxiliary power by receiving AC power and supplies power to each component, and the main power and video signal processing unit 36 for driving the heater according to a predetermined control signal CC2. The output power from the auxiliary power supply 502 and the flyback transformer 402 of the heater output from the transformer power supply unit 400 according to the flight transformer (FBT) 402 and the predetermined control signal (CC1) for generating a power of each of the The first switch (SW1) 404 for switching the main power source 400 of the heater, and the second switch for turning on / off the auxiliary power source (504) of the heater output from the transformer power supply unit 400 according to the control signal (CC1) ( 416, the generator 408 for generating a horizontal drive pulse in accordance with the output of the second switch 416, and the flyback transformer 402 by inputting the horizontal drive pulse generated in the horizontal drive pulse generator 408 To generate a predetermined control signal CC2 for driving the Horizontal driver 500; And a microprocessor for generating a predetermined control signal CC1 for controlling the first switch 404 and the second switch 406 according to whether the key input signal is input.

The effects of the present invention configured as described above are as follows.

First, in the state in which commercial exchange is applied, the set is maintained in the standby state by the primary power supply unit 78 of the power supply unit 40.

That is, the standby power is supplied to the processor 84 by the mite of the television control unit 42 to maintain the standby standby state of the remote control signal.

When the user presses the power button 24 or inputs a power-on command through the remote control, the television power supply voltage is supplied to the television signal receiver 32, the video signal processor 36, and the audio signal processor 38 through the television power supply 80. This is provided.

In the initial state, the selection means 44, 62, 72, 74 are switched to the TV mode.

The selecting means 50 is kept off.

Therefore, the television mode is always set as the initial mode.

When the user presses the CD power key of the control box or inputs the CD power key through the remote controller, the microprocessor 84 generates the power control signal PW to enable the CD power supply 82, and thus the CD power supply 82 ) Supplies a power supply voltage to the compact disc player 34.

The compact disc player 34 reads disc information from the lead-in area of the disc inserted through the door, and transmits a control signal corresponding to the disc to the television control unit 42.

The television control unit 42 controls the switching of the selection means in accordance with the disc type.

In the case of a CD digital audio disc, a switching control signal X6 is generated to switch the second selecting means 62 to the CD mode and display related information, for example, disc table contents information in the OSD.

Thus, the user can interactively use the set through the remote control while viewing the OSD displayed on the CRT.

In the case of a CDG or CD-OK disc, switching control signals X2 and X6 are generated to switch the selection means 44.62 to the CD mode.

When using the song playing function using a CD-OK disc, a background image is provided as a still image recorded on the disc.

When the user presses the background selection key of the control box 26, the switching control signal X3 is generated to switch the third selection means 50 to the on state.

Therefore, the TV screen can be selected as the background image at the time of song performance.

In addition, when the user wants to receive a background image from an external video source such as a video camera or a video cassette recorder, a switching control signal (X1) is obtained by connecting a video output terminal of the device to an external video input terminal and selecting the corresponding external video input terminal. Is generated so that the selection means 74 switches to select the corresponding external video signal.

In the case of using the external video as the wallpaper, the compact disc player 34 inputs the external video signal to the input terminal EX to superimpose the lyrics information generated internally, and removes the video signal having the lyrics information superimposed. It is displayed on the CRT 10 through the first selecting means 44.

In addition, the compact disc player 34 may output a video signal as a composite video signal, but may output an RGB signal and display the same on the CRT 10 through the RGB mixer 58 of the video processor 46.

If the CD mode is not selected in order to minimize the power consumption, the CD power supply unit 82 is in a disabled state to cut off the power supply to the compact disc player 34.

The auxiliary power sources 502 and 504 of the heater generated by the transformer power supply unit 400 shown in FIG. 5 are input to the first switch 404 and the second switch 402, respectively, and the main power source of the heater generated by the flyback transformer 402. 506 is input to the first switch 404.

When there is no key input signal according to the control signal CC1 of the microprocessor 84, the first switch SW1 switches 502, and the second switch SW2 is turned off to supply power to the horizontal drive pulse generator 408. Is blocked.

Therefore, since the driving signal of the flyback transformer 402 is not generated, the main power supply 506 of the heater and the power supply of the video signal processing unit 36 are not supplied to the flyback transformer 402, and thus the heater generated from the transformer power supply unit 400 is not supplied. Auxiliary power is supplied to the CRT 10.

When there is a key input, the first switch 404 switches the main power supply 506 of the heater, and the second switch 406 is turned on to supply power to the horizontal drive pulse generator 408 so that the control signal is transmitted from the horizontal drive unit 500. CC2 is generated to drive the flyback transformer 402.

Accordingly, the main power source 506 of the heater generated by the flyback transformer 402 is supplied to the CRT 10, the power is supplied to the video signal processor 36, and the OSD is immediately displayed on the CRT 10.

As described above, according to the present invention, the compact disc player television receiver can integrate a TV set and a CD song accompaniment set into one set, thereby improving convenience in use and easily providing a wider variety of wallpapers in the song accompaniment function. In addition, it is possible to save resources by unifying some of the components.

In addition, by preheating the CRT by supplying the auxiliary power of the heater to the CRT, and when a key input signal is input, the main power of the heater is supplied to the CRT, so that the OSD is displayed immediately at the time of key input.

Claims (4)

A first step of receiving AC power and generating auxiliary power of the heater and power of each component; A second step of generating a main power source for driving the heater and a power source of the video signal processor in accordance with a predetermined control signal CC2; Generating a predetermined control signal CC1 according to whether a key input signal is input; A fourth step of switching an auxiliary power supply of the heater output in the first step and a main power supply of the heater output in the second step according to the control signal CC1 generated in the third step; In response to the control signal CC1 output in the third step, the auxiliary power of the heater output in the first step is turned on / off to generate a predetermined control signal CC2 for generating the main power of the heater. CRT preheating method characterized in that the fifth step. The method of claim 1, wherein the fourth step is to switch to the auxiliary power supply of the heater when there is no key input signal, and to switch to the main power supply of the heater when there is a key input signal. CRT preheating method characterized by. In an A / V product having a CRT, a heater for heating the CRT, and a video signal processor, AC power is supplied to generate auxiliary power for the heater, and power is supplied to each component of the A / V product. A power supply unit for supplying power; A flyback transformer (FBT) for generating a main power source for driving the heater and a power source of the video signal processor according to a predetermined control signal CC2; A first switch SW1 for switching the auxiliary power of the heater output from the transformer power unit and the main power of the heater output from the flyback transformer FBT according to a predetermined control signal CC1; A second switch (SW2) for turning on / off the auxiliary power of the heater output from the transformer power unit according to the control signal (CC1); A horizontal drive pulse generator for generating a horizontal drive pulse according to the output of the second switch SW2; A horizontal driver configured to input a horizontal drive pulse generated by the horizontal drive pulse generator to generate a predetermined control signal CC2 for driving the flyback transformer; And a microprocessor for generating a predetermined control signal (CC1) for controlling the first switch and the second switch according to whether a key input signal is input. The microprocessor of claim 3, wherein the microprocessor switches the first switch SW1 to an auxiliary power source of the heater when the key input signal is absent depending on whether a key input signal is input, and turns off the second switch. CRT preheating device, characterized in that if there is a signal to switch the first switch (SW1) to the main power source of the heater, and generates a predetermined control signal (CC1) for turning on the second switch (SW2).