TW201141060A - Input signal detecting circuit and liquid crystal television thereof - Google Patents

Abstract

A liquid crystal television responds in an immediate correspondence with a received power-off signal, a received video/audio signal, a received data signal, or a received remote signal, so as to leave or enter a standby mode. While no signal for leaving the standby mode is received, primary voltage sources of the liquid crystal television are shut down so as to ensure the reduction of power consumption.

Description

201141060 VI. Description of the Invention: [Technical Field] The present invention discloses an input signal detecting circuit and related liquid crystal television, and more particularly to an input signal detecting circuit and related liquid crystal television that save power consumption in a standby mode. . [Prior Art] Please refer to Fig. 1, which is a schematic functional block diagram of a general liquid crystal television 100. As shown in Fig. 1, the liquid crystal television 100 includes a main system board 105' - a display panel 160, a speaker 170, and a frequency converter 150. The main system board 105 includes a power board 110, a primary level microcontroller 120, a computing unit 130, and an audio amplifier 140. The power board 110 includes a standby power module 112 and a main power module 114. The main power module 114 includes a computing unit power supply VI, an audio amplifier power supply V2, and a backlight power supply V3. When the LCD TV 100 enters the standby mode, the power board 110 will only reserve the power of the standby power module 112 and turn off all the powers contained in the main power module U4. After the LCD TV 100 is ready to leave the standby mode and enter the normal operation mode, the standby power module 112 provides a standby voltage Vsb to the secondary microcontroller 120' when the secondary microcontroller 120 receives the prompt button command or the remote controller. When the command is turned on, the secondary microcontroller 120 outputs a signal PON having a higher potential to activate the computing unit power #V1, audio amplification 201141060 _ power supply v2, and backlight power supply V3 included in the main power module 114, The computing unit 130, the audio amplifier 140, and the inverter 150 are respectively activated to drive the display panel 16 and the speaker, and the frequency converter 150 is used to drive the backlight mode of the display panel 160. However, although in the standby mode, the standby power module 112 still consumes the power of the main system board 1 〇 5, the standby power module 112 still has room for improvement in saving power in the standby mode of the LCD TV 100. . ^ SUMMARY OF THE INVENTION The present invention discloses an input signal detecting circuit. The input signal detecting circuit comprises a switch and a transistor. The open relationship includes an open end, a closed end, and an output end. The open end is grounded. The closed end is used to receive a shutdown signal. The open relationship determines whether to output a signal input by the closed end or the open end according to whether the closed signal is received. One input end of the transistor is coupled to the output end of the switch. One of the bias terminals of the transistor is coupled to a voltage source. One of the outputs of the transistor is used to output an enable signal. The turn-on signal is used to turn on the power included in a power strip. This description discloses an input signal detection circuit. The input signal detecting circuit comprises an inverse amplifying circuit, an integrating circuit, and a switching circuit. The inverse amplification circuit is coupled to a first voltage source. The inverse amplifying circuit is configured to receive an audio signal to generate an amplified signal. The integrating circuit is used to integrate the amplified signal to generate an integrated signal. The switch circuit includes a first transistor and a second transistor. The input end of the first transistor is coupled to the integrating circuit to receive the integrated signal, and the first electrical terminal is coupled to a second voltage source. An input end of the second transistor is coupled to the first bias end of the first transistor, and a bias end of the second transistor is coupled to a third voltage source, and the second One of the crystal outputs is used to output an open §fi number. The turn-on signal is used to turn on the power included in a power strip. The invention discloses an input signal detecting circuit. The input signal detecting circuit includes a first switching circuit and a second switching circuit. The first switching circuit includes a first transistor. One of the input terminals of the first transistor is for receiving a data signal, and one of the bias terminals of the first transistor is grounded. The second switching circuit includes a second electrical crystal. One of the input terminals of the second transistor is connected to one of the output terminals of the first transistor and a first voltage source. One of the bias terminals of the second transistor is coupled to a second voltage source. One of the output terminals of the second transistor outputs an activation signal. The start signal is used to activate the power supply included in a power strip. The invention discloses an input signal detecting circuit. The input signal detecting circuit comprises an inverse amplifying circuit, an integrating circuit, a switching circuit, and a self-holding circuit. The reverse amplification circuit is coupled to a first voltage source. The reverse amplification circuit is configured to receive a remote control signal to generate an amplified signal. The integration circuit is used to integrate the amplification signal to generate an integration signal. The switching circuit includes a first transistor and a second transistor. The edge-transistor-input terminal is consuming the integration circuit to receive the integration. The -first bias terminal of the edge-transistor is grounded. One of the n-day bodies is second to the second voltage source. One of the input ends of the second transistor is lightly connected to the second bias end of the first transistor. One of the biasing ends of the second transistor is connected to the -2011 third voltage source. The output of the second transistor is an output-start signal. The start signal is used to turn on the power included in a power strip. The self-holding circuit includes a second transistor. 2 The second transistor is connected to the start signal. The -bias end of the third transistor is grounded. The second bias end of the third transistor is lightly connected to the input end of the second transistor. The invention is a liquid crystal television. The LCD television includes a battery, an input signal pattern detecting circuit, a signal source, a relay, a power board, and a display panel. The input signal pattern detection circuit is coupled to the battery to receive power provided by the battery. The input signal detecting circuit receives a turn-off signal, an audio-visual signal, a data signal, and/or a remote control signal' and generates an activation signal based on the signals. The input signal pattern detecting circuit comprises a power signal detecting circuit, an audio signal detecting circuit, a data signal detecting circuit and a remote signal detecting circuit. The power signal detecting circuit is configured to generate the start signal according to the turn-off signal. The video signal detecting circuit is configured to generate the start signal according to the video signal. The data signal detecting circuit is configured to generate the start signal according to the data signal. The remote signal detecting circuit is configured to generate the start signal according to the remote control signal. The signal source is used to provide a plurality of drive signals. The relay is configured to receive the start signal by the input signal mode detecting circuit, and to receive the plurality of driving signals from the signal source. The power board is coupled to the relay to activate its power source and receive the plurality of driving signals in a standby mode according to the startup signal. The display panel is coupled to the power board and configured to display a picture according to the power received by the power board and according to the plurality of driving signals. 201141060 [Embodiment] In order to further reduce the power consumption of the standby power module disposed in the LCD TV in the standby mode, the present invention relates to different signal sources used in the liquid crystal television, and discloses various input nickname detection circuits. The LCD TV including these input signal detection circuits is also disclosed. Please refer to FIG. 2 , which is a schematic diagram of a simplified functional block diagram of a liquid crystal television 2 according to the present invention. As shown in FIG. 2, the LCD TV 2 includes a main system board 2〇5, a frequency converter 150, a display panel 160, and a speaker 170. The main system board 205 includes an input power source 210, a relay 220, a power board 110, a computing unit 130, an audio amplifier 140, and an input signal pattern detecting circuit 250. The main system board 205 can optionally be additionally provided with a battery 280 for supplying the power consumption required by the input signal mode detecting circuit 250 in the standby mode. The input signal mode detecting circuit 250 includes a first input signal detecting circuit 300, a second input signal detecting circuit 400, a third input signal detecting circuit 500, and a fourth input signal detecting circuit 600. The first input signal detecting circuit 300 receives a turn-off signal Power_key, indicating that a television signal is being received by the liquid crystal television 200. Therefore, the first input signal detecting circuit 300 emits a signal PON to cause the liquid crystal television 200 to be out of the standby mode. The second input signal detecting circuit 400 receives an audio and video signal AV. When the video signal AV is received, it indicates that the television signal is being received by the liquid crystal television 200. Therefore, the second input signal detecting circuit 400 sends a signal PON to make the liquid crystal television. 200 is out of standby mode; wherein the video signal AV can be a composite video connector sigal. The second input signal detecting circuit 500 is connected to 201141060 to receive one of the external input data, the first data signal HDMI or a second computer signal PC representing one of the personal computers (PC). When receiving the data signal HDMI, it indicates that there is The external input data or the external personal computer signal is being received by the LCD TV 200. Therefore, the third input signal detection circuit 500 generates the signal P0N to cause the LCD TV 200 to be out of the standby mode; wherein the data signal HDMI can be one. High Definition Multimedia Interface Signa HDMI signal. The fourth input signal detecting circuit 600 receives a remote control signal IR. When the remote control signal IR is received, it indicates that an external remote controller issues an instruction to turn on the liquid crystal television 200. Therefore, the fourth input signal detecting circuit 600 generates a signal accordingly. The PON causes the LCD TV 200 to be out of the standby mode; please note that in the embodiments of the present invention, since the signal strength of the AV signal AV and the remote control signal IR is low, it is necessary to increase the respective signal strengths by the amplifying circuit. Detection procedure. When the input signal mode detecting circuit 600 receives the signal including one of the input signal detecting circuits, the signal PON is generated to turn on or off the relay 220, so that the relay 220 can turn on the power source V2 included in the power board 110. V3, and the power sources that are turned on are used to turn on the corresponding devices. Detailed embodiments of the above-described respective input signal detecting circuits 300, 400, 500, 600 will be described below. Please refer to FIG. 3, which is a schematic diagram of the input signal detecting circuit 300 shown in FIG. As shown in FIG. 3, the input signal detecting circuit 300 includes a switch swun, a transistor qku, and a resistor R1 (n, R1〇2, and a diode D101. The switch SW101 includes an open end NC and a closed end NA. The open end NC is grounded. The closed end NA is used to receive the shutdown signal power_key, and the switch SW101 is based on whether it is connected or not.

The bias voltage is connected to a standby voltage source Vsb3i, mver_key. One of the outputs of the transistor qi〇1 is used to output the turn-on signal P0N to turn on the relay 22 and the power board. The - terminal of the resistor R101 is switched to the output terminal NB of the switch tear, and one of the resistors is connected to the input terminal of the transistor. Resistance is 2 - the first end

One of the output terminals NB of 101, the transistor Ql〇l Vsb3, and one of the transistors q1〇1 are transmitted in the preferred embodiment of the present invention, and the transistor (10) is a clear type dual-contact junction transistor. (Bipolar junction τ deleting ist〇r), the input end of the transistor Q1〇l is -Base (Base) 'The bias end of the transistor Q1〇1 is an emitter (Emi (4), and the output end of the transistor Q101 The input terminal of the diode D1〇1 is coupled to the output end of the transistor Q101, and the second end of the diode is printed with a signal outputted by the second end of the diode D1〇1.

The operation of the input signal_circuit 300 is detailed below. When the LCD TV 2 enters the standby mode from the normal operating state, the OFF SW1Q1 will switch to the OFF terminal NA' so that the input terminal of the transistor Qun is at a high potential and the transistor Ql〇i is turned off, so the signal P0N will be low. Potential. Conversely, when the LCD TV 2 enters the positive ten operating state from the standby mode, the switch swl〇l will switch to the open end, so that the input end of the transistor Q101 is at a low potential and the transistor q1〇1 is turned on. Therefore, the signal p〇N 201141060' will be at a high potential to turn on the power supplies vi, V2, V3 included in the relay 220 and the power board 110. Please refer to FIG. 4, which is a schematic diagram of the input signal detecting circuit 400 shown in FIG. As shown in FIG. 4, the input signal detecting circuit 400 includes a capacitor C201, a resistor R201, an inverse amplifying circuit 410, an integrating circuit 420, a switching circuit 43A, and a diode D2 (H. Reverse The amplifying circuit 410 is coupled to a first standby voltage source Vsb41. The reverse amplifying circuit 410 receives a lower potential video signal AV through the capacitor C201 and the resistor R201, and increases the potential of the video signal AV to generate an amplified signal. AV-A. The reverse amplifier circuit 410 includes a transistor Q201, resistors R202, R203, and R204. One input terminal of the transistor Q201 receives the video signal AV through a resistor R201 and a capacitor C201; The bias terminal is coupled to the standby voltage source Vsb41' through the resistor illusion 4 and the second bias terminal of the transistor Q201 is grounded. The integrating circuit 420 includes a capacitor C202 and a resistor buckle 5. The resistor is still the first The terminal is used for receiving the amplified signal AV_A' and the second end of the resistor R205 is used for outputting the integral signal AV_C. One of the first ends of the capacitor C202 is coupled to the personnel of the resistor Magic 5, and the electric valley C202 One of the first & grounding. The circuit 420 integrates the amplified signal AV-A by the electric valley C202 and the resistor R205 to generate an integrated signal AV 〇〇11 201141060. The switching circuit 430 includes transistors Q202 and Q203, and resistors R206, R207, 'R208, and R209. In the switch circuit 430, the input end of the transistor Q202 is coupled to the integrating circuit 420. The integrated signal AV_C is received, and one of the first bias voltages of the transistor Q202 is connected to a second standby voltage source Vsb42. The input end of the Q203 is connected to one of the output terminals of the transistor q2〇2 through the resistor R208. One of the bias terminals of the transistor Q2〇3 is coupled to the third standby voltage source Vsb43, and one of the outputs of the transistor Q203 is used. The output signal PON is output to enable the relay 22 and the power supply V2, V3 included in the power supply board 11(). The first end of the resistor R206 is coupled to the input end of the transistor Q2〇2 and The second end of the resistor R2〇6 is coupled to one of the second bias terminals of the transistor q2〇2 and grounded. The first end of the resistor R207 is coupled to the first bias of the transistor q2〇2. The second end of the resistor R207 is coupled to the second standby voltage source vsb42. One end is coupled to the first bias end of the transistor q2〇2, and the first end of the resistor is coupled to the input end of the transistor Q2〇3. One of the first ends of the resistor R2〇9 is connected to The second end of the resistor R2〇8 and the second end of the resistor 9 are subtracted from the bias end of the electric body Q203. One of the first ends of the diode D2〇1 is connected to the transistor Q203 The output terminal receives and outputs a signal to turn on the power supplies VI, V2, and V3 included in the relay and the power source board 110. In a preferred embodiment of the present invention, the transistors Q20 and Q202 are both _ type double carrier junctions, and the transistors q2 〇3 are P叩 type double carrier junction transistors. Therefore, the input end of the transistor Q2G1 is a base, the first bias end of the transistor is a collector, and the second bias end of the transistor Q2〇1 is a single shot. The input end of the transistor Q202 is a _ 'the end of the transistor is 12 201141060 collector and one of the emitters of the transistor Q202 is grounded; the input end of the transistor q2 〇 3 is - The base end of the transistor Q203 is an emitter, and the output of the transistor is (5) is a collector. The mode of operation of the input signal detection circuit 400 is detailed below. When the input signal detecting circuit 400 receives the video signal of the local potential, the transistor (10) will be turned on, and the potential of the audio signal AV will pass through the voltage division of the resistor 2 and (4) 3 and the first standby voltage source V. The bias voltage is amplified in the reverse direction, and the bias voltage of the amplifier circuit Q2(1) of the amplified signal AV-A is also inversely amplified as described herein. The lower the potential of the heart-shaped shirt, the sound of the mobile mouse AV At this time, the potential at the bias end of the transistor 2〇1 is increased due to the higher voltage division of the resistor R202 than the (four) bucket. Since the potential of the bias terminal of the transistor (10)i of the turn-on of the transistor Q201 is lowered, the amplification caller AV-A is actually at a low potential. The integrating circuit 42 积分 integrates the low-amplitude amplification shouting AV_A to a certain extent and then inputs the potential (4) potential of the transistor Q2G2 to generate the transistor (3202 is turned on; thus the 'transistor Φ02' The potential of the bias terminal is lowered and is at a low potential, and the transistor Q2G3 is turned on. Due to the opening of the transistor Q2Q3, the potential of the output terminal of the transistor Q2〇3 is biased by the third standby voltage source %Μ3. However, a high potential appears. Therefore, the current system is at a high potential, and the relays 22 and the power supplies VI and V3 included in the power supply board 110 are turned on. Please refer to the fifth item, which is the input signal shown in FIG. The detection circuit 5 is shown in Fig. 5. As shown in Fig. 5, the "wheeled signal side circuit 500 includes a -th switch circuit] 13 201141060 510, a second switch circuit 520, and a diode D301. The first switch circuit 510 includes a transistor Q301 and a resistor R3 (U, R3 〇 2. The second switch circuit 520 includes a transistor Q302 and resistors R3 〇 3, R3 〇 4, R 305. In the first switch circuit 510 One input of crystal Q301 is received through resistor R301 The signal is HDMI or PC, and one of the terminals of the transistor Q301 is grounded. The first end of the resistor R301 is used to receive the data signal HDMI or PC, and the second end of the resistor R301 is coupled to the transistor Q301. The first end of the resistor R302 is coupled to the second end of the resistor R301, and the second end of the resistor R302 is grounded. In the second switch circuit 520, one of the input terminals of the transistor Q302 is transmitted through the resistor. R304 is reduced from one of the output terminals of the transistor Q3〇i to a first standby voltage source, and one of the bias terminals of the transistor Q302 is coupled to a second standby voltage source ν^52, and one of the transistors Q302 The output end outputs a signal p〇N to activate the relay 22〇 and the power source V1, V2, V3 included in the power board. The resistor-the first end is at the output end of the transistor Q301, and the resistance is 3 The second end is consumed by the first standby voltage source Vsb51. One of the first ends of the resistor R3〇4 is connected to the wheel end of the transistor (10), and the first end of the electric P R3〇4 is lighter than the transistor The input end of the resistor (four) $ is connected to the second end of the resistor R3〇4, and the second end of the resistor leg 5 is a body The bias terminal of the _ diode is connected to the output of the second end of the diode, and the diode is dirty - the second end is used to output the signal PON 〇 201141060

The output is a collector. The transistor Q301 is an npn-type bi-carrier junction 丨 dual-carrier junction transistor, wherein the bias terminal of the transistor transistor Q301 is a single emitter-transistor transistor Q3〇2. The end is an emitter and the transistor Q302

When the circuit 500 receives the high potential data signal H_ or pc, the transistor _ will be turned on to pull down the potential of the output terminal of the transistor Q3G1, and turn off the transistor Q302. In this way, the potential of the output terminal of the transistor Q3〇2 is increased by the bias voltage of the second standby voltage source Vsb52, so that the power supply included in the power supply 220 and the power board no is turned on. V1, V2. Referring to Fig. 6, it is a schematic diagram of the input signal detecting circuit 6A shown in Fig. 2. As shown in Fig. 6, the input signal detecting circuit 6A includes a resistor R5m, a reverse amplifying circuit 610, an integrating circuit 620, a switching circuit 630, a self-holding circuit 640, and a diode D501. The inverting amplifier circuit 610 includes a transistor Q5 (H, and resistors R502, R503, R504. The integrating circuit 620 includes a resistor R505 and a capacitor C501. The switch circuit 630 includes transistors Q502 and Q504, and resistors R506, R507, R508. R509, R512. The self-holding circuit 640 includes a transistor Q503 and resistors R510 and R511. 15 201141060 In the inverting amplifier circuit 610, one of the input terminals of the transistor Q501 receives the remote control signal IR through the resistor R501, and the transistor Q501 A first biasing end is grounded, and a second biasing end of the transistor Q501 is coupled to a first standby voltage source Vsb6, and one of the first ends of the resistor R5〇3 is connected to the transistor Q501. An input end, and a second end of the resistor R503 is coupled to the first bias end of the transistor Q5〇1. The first end of the resistor R5〇2 is coupled to the input end of the transistor Q501, and The second end of the resistor R5〇2 is coupled to the first standby voltage source Vsb61. The first end of the resistor R504 is coupled to the first bias end of the transistor q5〇1, and the resistor R5〇4 A second end is consumed by the second end of the resistor R5 〇 2. The reverse amplifying circuit 610 receives the remote The signal signal is amplified in a reverse manner, and an amplification signal IR_A is generated on the second bias terminal of the transistor Q501. ▲ In the integration circuit 620, the first end of the resistor R505 is tied to the transistor 5 The second bias terminal of 〇1 receives the amplification signal IR_A, and the second end of the resistor R505 is used to output the integral signal mR_c. The first end of the capacitor (4) is connected to the resistor R505. The second end, and one of the second ends of the capacitor C5〇i is grounded. The integration circuit (4) ^ receives the amplification 峨IR-A age, and outputs the integral signal IR_C at the second end of the shirt (10) 5. 7 (10) The transistor Q5G2 is connected to the resistor leg, the crystal signal IR'C, the transistor_the first bias terminal is grounded, and one of the resistors R50K is connected to a second standby voltage. The source Vsb62 is electrically connected to the input end of the transistor Q502, and the resistor 5〇6 is connected to the first bias terminal of the transistor (10) 2. The transistor Q504-transverts 201141060 • The input terminal is connected to the if-duplex, and the second bias terminal of the electric power reduction (10) 2 is used. The source Vsb63, and one of the outputs of the transistor Q504 outputs an activation signal PON to turn on the relay n no and the surface %, V2, V3 included in the power board 110. The resistance is said to be the first end connected to the transistor Q502 The output end, and the second end of the resistance reading is lightly connected to the second power source Vsb62. The first end of the resistor 8 is connected to the end of the transistor 2, and the resistor R5G8 - the first The two ends are transferred to the input end of the transistor. The first end of one of the legs 9 is lightly connected to the input end of the transistor Q504, and the second end of the resistor R5〇9 is coupled to the third standby voltage source Vsb63. One of the first ends of the resistors R5! 2 is coupled to the second end of the resistor R509, and one of the second ends of the resistors 2 is coupled to the bias terminal of the transistor Q504. In the self-holding circuit 640 + 'transistor q5Q3 _ input terminal _ connected and receives the start signal, one of the first bias terminals of the transistor q503 is grounded, and the second bias end of the transistor (10) The input end of the transistor Q class. One of the resistors MW receives the start signal, and (4) the second end of the resistor is connected to the transistor Q503. The first end of the resistor R511 is switched to the second of the resistor r. And the second end of the resistor R511 is grounded. In the preferred embodiment of the invention, the transistors Q5m, Q5G2, and Q5G3 are 叩η type bipolar junction transistors and the transistors q5G4 are ρηρ type. The double carrier is connected to the transistor. Therefore, the terminal of the transistor Q5G2 is the base, and the bias end of the electric Japanese and Japanese Q5Q2 is the emitter, and the output of the transistor Q5G2 is - Collector; transistor Q5〇4 17 201141060, the input _, is the base, the output of the transistor _4 of the transistor 4 is "collector, electric == and the base, the transistor (10) 3 (4) μ, ^ 〈 碥 碥 碥 一 第 第 第 第 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — ^ The operation mode of the input signal test circuit _ is explained as follows. When the user briefly activates the remote control and makes the remote control EIR transiently high, the reverse amplification circuit will be remote.峨iR is amplified by Ru Shi _ counter-time, and the amplification signal IR-A is generated at the first-bias % of the transistor Q, and then the integration circuit 62G accumulates the UR-A to generate the integral signal IR_C. When the signal ir-匸 potential = accumulated enough to turn on the transistor Q5〇2 by its high potential, the potential of the output of the transistor Q5〇2 will drop and the transistor q5〇4 will be turned on, so that the transistor is turned on. The potential of the output terminal of 4 is at a high potential under the bias voltage of the third standby power (four) Vsb63, and according to the output of the high-potential start signal P0N, the power supply V bu V2 of the relay 22 〇 and the power supply board 丨 1 开启 is turned on. V3. However, since the remote control signal IR activated during the time is only maintained - the short period _ high potential, if the remote subtraction IR returns to the low potential, the start signal PON will return to the low potential and cause In order to prevent this, the self-holding circuit 640 maintains the high potential of the enable signal P0N by keeping the input terminal of the transistor Q5〇4 low. When the self-holding circuit 64〇 transmits the resistor When the R510 receives the high-potential start signal pon, the power The crystal Q5〇3 will turn on and continue to pull down the input potential of the transistor Q504, while maintaining the high potential of the transistor q5〇4 18 201141060 and the start signal PON. The present invention discloses a liquid crystal television and its corresponding to various The type signal system set by the type signal. Wei Jing electric needle riding minus __ number, audio and video signals, and remote control signals make an instant response to get detached or enter standby mode, but not gambling The handle is the closure of each of the main power sources of the cake to ensure the reduction of power consumption. The above is only a preferred embodiment of the present invention, and the equivalent variation and modification made by the scope of the patent application of the present invention The scope of the invention is covered by the invention. [Simple description of the figure] Fig. 1 is a schematic diagram of a simplified functional block diagram of a general LCD TV. FIG. 2 is a schematic diagram of a simplified block of a liquid crystal television disclosed in the present invention. The 3 4 5 6 示意图 is a schematic diagram of various input signal detecting circuits included in the LCD TV of the second embodiment. [Main component symbol description] 100, 200 105 ' 205 110 LCD TV main board power supply board 201141060 112 114 120 130 140 150 160 170 V Bu V2, V3 210 220 250 280 300, 400, 500, 600 410, 610 420 , 620 430, 510, 520, 630 640 SW101 standby power core group main power module secondary microcontroller calculation unit audio amplifier inverter display panel speaker power input power relay input signal mode detection circuit battery input signal detection circuit Amplifying circuit integrating circuit switching circuit self-holding circuit switch

Q101 ' Q201 ' Q202 ' Q203 ' Transistor Q3 (H, Q302, Q501, Q502, Q503 ' Q504 20 201141060 R101, R102, R201, R202, R203, resistors R204, R205, R206, R207, R208, R209, R3 ( U, R302, R303, R304, R305, R5 (H, R502, R503, R504, R505, R506, R507, R508, R509, R510 ' R511 ' R512 C201 ' C202

D101, D201, D301, D501 References NC Powerkey PON, POFF AV IR AV-A, IR A • AV_C, IR-C HDMI, PC

Vsb3 Bu Vsb4 Bu Vsb42, Vsb43, Vsb5 Bu Vsb52, Vsb6 Bu Vsb62, Capacitor Diode Closed End Open Close Signal Signal Audio Signal Remote Signal Amplify Signal Integrate Signal Data Signal Standby Voltage Source

Vsb63 21

Claims (1)

201141060 VII. Patent application scope ·· 1. An input signal ^ (test circuit, including: - switch, including - open end, - closed end and one round end, wherein the open end is grounded 'the closed end is used Receiving a turn-off signal, and the open relationship determines whether to output a signal input by the closed end or the open end according to whether the closed signal is received; and an electric B0 body, an input end handle is connected to the switch At the output end, one of the bias terminals of the transistor is connected to a voltage source, and one of the output terminals of the transistor is used to output an open signal, wherein the turn-on signal is used to turn on a power supply included in a power board. 2. The input signal detection circuit of claim 1, further comprising: a first resistor, a first end of which is coupled to the output end of the switch, and one of the first resistors is second An end of the second resistor is coupled to the second end of the first resistor, and a second end of the second resistor is coupled to the second end of the second resistor At the bias end of the transistor. The signal detection circuit includes: an inverse amplification circuit coupled to a first voltage source, the inverse amplification circuit for receiving an audio signal to generate an amplification signal; and an integration circuit for integrating the amplification a signal to generate an integration signal; and 22 201141060 a switching circuit comprising: a first transistor, the input terminal is _ the integration circuit to receive the integrated power _= the first partial of the first transistor The end system is input to a second one-bias source, and the output end of the second transistor is used to output an open signal on the third side of the first one. 4. The input signal as described in claim 3 a detecting circuit, wherein the first-electro-crystal system is an npn-type bi-carrier junction transistor and the germanium system is a binary-type dual-contact junction transistor, wherein the bias terminal is an emitter, and _ + a The pole of the electric Japanese body. L Haidi - the output of the transistor is an episode 5. An input signal detection circuit comprising: a first switching circuit comprising: - a first - transistor The input end of the first transistor is biased to the ground; and the money is read, and a second switching circuit comprising: S1 23 201141060 a second transistor having an input coupled to the first transistor and the first voltage source, and the second transistor is biased The voltage terminal is coupled to a second voltage source, and one of the second transistors rotates a start signal, wherein the start signal is used to activate a power supply included in a power board. The input signal detecting circuit of the fifth aspect, wherein the first switching circuit further comprises: a first electric circuit I1, wherein a first end is used for receiving the data signal, and the first electric reluctance is one of the second The first end is coupled to the second end of the first resistor, and the second end of the first resistor is coupled to the second end of the first resistor Grounded. The input signal detecting circuit includes: an inverse amplifying circuit coupled to a first voltage source, wherein the reverse amplifying circuit is configured to receive a remote control signal to generate an amplified signal; and an integrating circuit Integrating the amplification signal to generate an integration signal. A switching circuit comprising: - a first transistor - the input terminal is connected to the integration circuit to receive the integration signal 'the first transistor - the first a second end of the first transistor is coupled to a second voltage source; and a second transistor is coupled to the first transistor The second terminal of the second transistor is coupled to a third voltage source, and one of the output terminals of the second transistor outputs an activation signal, wherein the second terminal is coupled to a third voltage source. The start signal is used to turn on the power supply included in a power board; and the self-holding circuit includes: a second transistor, an input end of which is lightly connected to the start signal, and one of the first bias terminals of the first transistor Grounded, and one of the third transistors is coupled to the bias end The input terminal of the second transistor. First 8. The input signal detecting circuit of claim 7, wherein the first transistor and the third transistor are both npn-type dual carriers, and the second transistor system is a pnp type dual carrier. The input end of the surface electric current 第1 is a base, and the end of the first biasing end is an emitter 1 and the end is a collector; the electric body The second biasing is in which the input end of the second transistor is a base, and the opposite end is an emitter, and the: a transistor of the transistor; and the electrical body The output end is 1 wherein the first end of the input end of the third transistor is an emitter; a base, and the third transistor is a - collector. ~ The second transistor of the third transistor _: 9. A liquid crystal television comprising: 25 201141060 a battery; an input signal pattern detection circuit 'coupled to the battery to receive the power provided by the battery, the input signal detection The measuring circuit receives a turn-off signal, an audio-visual signal, a data signal, and/or a remote control signal, and generates an activation signal according to the signals, the input signal pattern detection circuit includes: a power signal detection circuit The activation signal is generated according to the shutdown signal; an audio signal detection circuit is configured to generate the activation signal according to the audio signal; a data signal detection circuit is configured to generate the activation signal according to the data signal; and a remote control The signal detecting circuit is configured to generate the starting signal according to the remote control signal; a signal source for providing a plurality of driving signals; and a relay (relay) for receiving the starting signal by the input signal mode detecting circuit, and Receiving the plurality of driving signals by the signal source; a power board coupled to the relay to activate according to the The device is powered by a standby mode and receives the plurality of driving signals; and a display panel is coupled to the power board and used to display the power received by the power board and display the plurality of driving signals according to the plurality of driving signals. A face. 10. The LCD TV of claim 9, further comprising: a computing unit coupled to the power board, wherein the computing unit is configured to receive power of the power board 26 201141060 and a plurality of driving signals for issuing a standby signal for causing the power board to enter the standby mode, and for driving the display panel with the received power and the plurality of driving signals; and an audio amplifier coupled to the power board and the display panel A speaker is used to drive the speaker with the power provided by the power board and the Weisaki. Φ Eight, schema: [S] 27