KR840003567A - Tv display system - Google Patents

Abstract

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Description

Tv display system

Since this is an open matter, no full text was included.

1 illustrates a television receiver power supply and deflection circuit with a standby remote control network embodying the present invention.

2 illustrates waveforms associated with the circuit of FIG. 1 in normal mode operation.

3 shows waveforms associated with the circuit of FIG. 1 during a standby mode operation.

4 illustrates a detailed embodiment of a SICOS power supply output network.

Claims (13)

A television display system responsive to a state of an on-off indication signal, comprising: a deflection winding, a deflection generator that operates in a normal mode and generates a scan current in the deflection winding; and a television display in synchronization with an operation of the deflection generator in a normal mode. A television display system comprising a switching power supply deflector for supplying power to a system, said deflection generator being connected to said deflection generator 21 and in response to an on-off support signal and receiving an off signal. And means (θ ₂ , W _b , W _c ) for substantially shorting 21) to change the operating mode of the switching power supply 20 to the standby operating mode. The television display system of claim 1, wherein the switching power supply (20) is free running to supply power at a substantially reduced power level during standby mode operation. In the second term television display system, the bias generator 20 is re-generating the retrace pulse voltage including a trace resonant circuit (C _R, L _H) and to the switching power supply 20 is the retrace resonant circuit A television display comprising an inductance (W ₁ ) connected to (C _R , L _H ) to transfer energy therebetween. In the television display system of claim 3, the switching power supply 20 is a source of voltage B ⁺ , output switching means S ₁ , S ₂ connected to the source B ⁺ and the inductance W ₁ , and And a control circuit 22 for generating a deflection synchronized with the operation of the output switching means in the normal mode, and the control circuit 22 reacts without the retrace pulse voltage to react with the output switching means S ₁ , S _2. And free-running. In the television display system of claim 1 comprising a source of input voltage and the switching power supply connected to the source, the first winding W ₁ and the deflection generator, in which the power transformer T _{1 is} connected to the switching power supply 20. With a second winding (W ₂ ) connected to the (21) and transfers from the source to the deflection generator in the normal mode operation and the standby power supply (W _c , D ₂ , C _q ) generates the operating supply voltage in the normal mode And a power supply to the standby power supply via a short circuit passage generated by the on-off indication signal response means. A television display system according to claim 5, wherein the switching power supply includes a control circuit which causes a free running operation of the switching power supply to generate a selective polarity voltage across the power transformer second winding W ₂ in the off state of the indication signal. And power is passed from the second winding through the short circuit passage. The television display system of claim 6, wherein the on-off support signal response means includes a switch (θ ₂ ) which is controllable in parallel with the standby power supplies (W _c , D ₂ , C _q ). A television display system characterized by shunting power from a bi-power supply. In the television display system of claim 6, the switching power supply 20 stores energy in the inductance from the input voltage source B ⁺ , including the inductance L ₁ , and the retrace pulse voltage generated by the deflection generator is normal. And the stored energy applied to the inductance during the mode operation. The television display system of claim 1, 5 or 8, wherein the switching power supply is an output switching means T _r 1, T _r 2 connected to a voltage source B ⁺ , and a reactive network R ₁ connected to the output switching means. , R ₂ , R ₃ , R ₄ , C ₂ ) and means θ ₁ for responding to a signal indicating that there is no retrace pulse generation for operating said reaction network generating a free running operation. TV display system. In the television display system of claim 9, the control circuit 22 of the switching power supply generates an operation of the switching power supply synchronized with the generation of the scan current in response to the deflection rate signal during the normal mode operation, where the reaction circuit R _{And 1} , R ₂ , R ₃ , R ₄ , C ₂ ) generate a free running operation at a frequency near the deflection frequency during the standby mode operation. In the television display system of claim 5, the short-circuit passage is created by continuous conduction of the trace switch θ ₄ and the on-off indication signal response means is connected to the first winding W _b connected to the control terminal of the trace switch. A television comprising a second transformer (T ₂ ) having a second winding (W _c ) connected to a standby power supply providing an output terminal of the trace switch and a positive feedback to maintain constant conduction of the trace switch. Display system. The television display system of claim 11, wherein the on-off support signal reaction means includes a controllable switch θ ₂ connected to the trace switch θ ₄ so that the sub-winding line of the second transformer T _{2 in} the normal mode operation ( A television display system characterized by shunting the current from W _c ). Claim 11 or according to clause 12 television display system, a second transformer (T _2), the third winding (W _a) during a deflection oscillator (32) connected to the normal modal motion generating a bias ratio switching of a trace switch (θ ₄₎ of the And a television display system. ※ Note: The disclosure is based on the initial application.