The utility model content
The utility model purpose is to provide a kind of new-type set-top box, mainly is for a kind of new power on-off modes of set-top box simply and easily being provided, solving all inconvenience that brings to the user in the existing various set-top box on-off mode use.
For solving technical problem of the present utility model, the utility model discloses a kind of set-top box, comprising: external conductive casing, and control circuit board and main power source, described main power source connects electrical network by described control circuit board; Wherein,
Described external conductive casing links to each other with described control circuit board, when human body touch, described external conductive casing according to human body with the charge generation touch signal, described touch signal transfers to described control circuit board by described external conductive casing;
Described control circuit board connects described electrical network and described main power source respectively, and described control circuit board is exported control signal corresponding after receiving described touch signal, and disconnection between described electrical network and the described main power source or connection are by described control signal control.
More excellent, described control circuit board further comprises human body touch induction IC, microcontroller, electronic switch; Wherein,
Connect an electric capacity between the external conductive casing of described set-top box and the described human body touch induction IC, when the external conductive casing of human body touch set-top box, this electric capacity utilizes capacitance induction principle to produce touch signal;
The described human body touch induction IC that generates level signal according to described touch signal is connected with the described microcontroller that produces control signal according to described level signal;
Described microcontroller also with control according to described control signal that described electrical network disconnects with described main power source or the electronic switch connected is connected.
More excellent, also comprise the auxiliary electric power supply module that DC power supply is provided to described microcontroller, described human body touch induction IC and described electronic switch.
More excellent, described auxiliary electric power supply module comprises transformer, rectification circuit, filter circuit and voltage stabilizing circuit four parts.
More excellent, described electronic switch comprises relay, triode Q1 and resistance R 4, wherein said resistance R 4 one terminates at the base stage of described triode Q1, the other end fetches control level output from described microcontroller as the CTRL port of described electronic switch, the grounded emitter of described triode Q1, collector electrode connect the input of described relay.
More excellent, described microcontroller adopts single-chip microcomputer to realize.
More excellent, described level signal is the level signal of 5VCMOS.
More excellent, described voltage stabilizing circuit is made up of divider resistance, the adjustable voltage-stabiliser tube of three ends and filter capacitor.
More excellent, described microcontroller, its STDB/WORK port receive the signal of the OUTPUT port of human body touch sensible IC, when receiving the touch pulse signal, once counter-rotating takes place in the output level of control level output port ON/OFF, thereby the state of electronic switch is changed.
More excellent, described rectification circuit adopts gets full-wave bridge rectifier circuit.
Compared with prior art, the utlity model has following beneficial effect:
The disclosed set-top box of the utility model, only need can realize the switching on and shutting down of set-top box with the metal place of set-top box shell under the have gentle hands light touches, provide a kind of method for start-up and shutdown very easily to the user, easily realized switching on and shutting down thereby especially when light is dark, can allow the user need not seek the start button.And at this moment the control circuit board power consumption is only arranged, and the power of control circuit board is little, cost is low, and power consumption is stable, and the switching on and shutting down of this moment are real switching on and shutting down.
Specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.
In an embodiment of the present utility model, set-top box mainly is to realize that by the human body touch induction technology power supply of set-top box opens and close.For example, set-top box comprises a kind of external conductive casing (perhaps the part shell scribbles conductive coating) and main power source, wherein, connects a control circuit board between main power source and the electrical network.Described external conductive casing, when human body touch, according to human body with the charge generation touch signal, and touch signal transferred to control circuit board; Described control circuit board, receive described touch signal after, the output control signal corresponding is controlled disconnection or connection between described electrical network and the described main power source.
This control circuit board includes human body touch induction IC, microcontroller, electronic switch, auxiliary electric power supply module.
Described have human body touch to respond to IC, utilize capacitance induction principle, be to have connect a little electric capacity between external conductive casing and the human body touch inducting IC IC, when the external conductive casing of human body touch set-top box, because human body has certain electric charge, thereby can make voltage certain on the capacitor strap (being capacitance induction principle), the touch sensible integrated circuit in this voltage input soft-touch control is by sending the switch of a control signal controller top box after it is handled.
For example, when the external conductive casing of human body touch set-top box, will produce a touch signal at these electric capacity two ends, this touch signal produces a pulse signal by Rectified alternating current and is sent to human body touch induction IC, human body touch induction IC handles the signal of input, the 5VCMOS level signal of exporting a standard from output pin is finished the collection and the work of treatment of touch signal to microcontroller.
Described microcontroller, after receiving the touch signal that human body touch IC sends, the output control signal corresponding is given electronic switch, and the state of control electronic switch is realized the start or the shutdown of set-top box.
Being connected of electrical network and main power source realized disconnecting or connected to described electronic switch according to the control level of microcontroller.
Described auxiliary electric power supply module, the conversion line voltage becomes direct voltage, gives microcontroller, human body touch induction IC and electronic switch for direct current.
Utilize the utility model, only need can realize the switching on and shutting down of set-top box with some places of set-top box shell under the have gentle hands light touches, provide a kind of method for start-up and shutdown very easily to the user, easily realized switching on and shutting down thereby especially when light is dark, can allow the user need not seek the start button.And at this moment the control circuit board power consumption is only arranged, and the power of control circuit board is little, cost is low, and power consumption is stable, and the switching on and shutting down of this moment are real switching on and shutting down.
In the utility model embodiment, when set-top box is in off-mode, only need gently once at the shell arsis of set-top box, set-top box just can normal boot-strap, and when needing shutdown, only needs again at set-top box shell arsis once, set-top box is the energy normal shutdown just, thereby make the switching on and shutting down process simple, convenient, and, improve user's experience not by any other instrument.
Fig. 1 shows the set-top-box system structure chart of a kind of low-power consumption standby that the utility model embodiment provides.
This set-top-box system mainly comprises soft-touch control control board 102, main power source 103, keying panel 104 and mainboard 105.Main power source 103 connects keying panel 104 and mainboard 105 respectively, and main power source 103 also is connected by soft-touch control control board 102 with electrical network 101.
Main power source 103 is given mainboard 105 and keying panel 104 direct voltage altogether respectively by its dc output end mouth (DC OUT port), and each direct voltage port is corresponding to be connected.Keying panel 104 shows corresponding respectively demonstration (DISPLAY) port and the infrared IR port that is connected mainboard 105 of control (DISPLAYCTRL) port and infrared IR2 port by it.Mainboard 105 is realized the various functions of set-top box.
Soft-touch control control board 102 control main power sources 103 are connected and disconnection with electrical network 101.When the set-top box operate as normal, this soft-touch control control board 102 couples together main power source 103 and electrical network 101.At this moment, main power source 103 is to mainboard 105 and keying panel 104 power supplies, and the external world can be by the various instructions of keying panel 104 inputs, and mainboard 105 is realized the various functions of set-top box according to instruction.
When set-top box was in off-mode, soft-touch control control board 102 disconnection main power sources 103 were connected with electrical network 101.At this moment, soft-touch control control board 102 is only arranged in work in the set-top box, the electric energy that set-top box consumed is exactly the electric energy that readiness control circuit plate 102 consumes.And the power consumption of readiness control circuit plate 102 is very little, has so just realized the shutdown of set-top box.
This control circuit board 102, include human body touch induction IC, connect a little electric capacity between external conductive casing and the human body touch inducting IC IC, utilize capacitance induction principle, when the external conductive casing (perhaps the part shell scribbles conductive coating) of human body touch set-top box, because human body has certain electric charge, will produce a touch signal at the electric capacity two ends, this touch signal produces a pulse signal by Rectified alternating current and is sent to human body touch induction IC, human body touch induction IC handles the signal of input, the 5VCMOS level signal of exporting a standard from output pin is finished the collection and the work of treatment of touch signal to microcontroller.Microcontroller, after receiving the touch signal that human body touch IC sends, the output control signal corresponding is given electronic switch, and the state of control electronic switch is realized the startup and shutdown of set-top box.Being connected of electrical network and main power source realized disconnecting or connected to electronic switch according to the control level of microcontroller; The auxiliary electric power supply module, the conversion line voltage becomes direct voltage, gives microcontroller, human body touch induction IC and electronic switch for direct current.Its concrete structure and the course of work, specifically can following Fig. 2 described.
Fig. 2 is a kind of set-top-box system concrete structure figure with soft-touch control function that the utility model embodiment provides.
As shown in Figure 2, soft-touch control control board 102 can comprise auxiliary electric power supply module, microcontroller, human body touch induction IC and electronic switch etc.In soft-touch control control board 102 inside, the auxiliary electric power supply module all links to each other with microcontroller with electronic switch, and the auxiliary electric power supply module is opened each other with electronics and also linked to each other simultaneously; Microcontroller also links to each other with human body touch induction IC.In soft-touch control control board 102 outsides, the auxiliary electric power supply module all links to each other with electrical network 101 with electronic switch, and also all links to each other with main power source 103, and human body touch induction IC also links to each other with the set-top box external conductive casing.
The auxiliary electric power supply module provides DC power supply for microcontroller, human body touch induction IC and electronic switch.The OUTPUT port of human body touch induction IC connects the STDB/WORK port of microcontroller.The control level output port of microcontroller connects the control input end of electronic switch.Electronic switch disconnects according to the input control level or connects being connected of electrical network 101 and main power source 103.
Soft-touch control control board 102 realizes being switched on or switched off the work of main power source 103 and electrical network 101, its course of work can be as described below: connect a little electric capacity between external conductive casing and the human body touch inducting IC IC, under the set-top box operate as normal, when human body touch set-top box external conductive casing (perhaps the part shell scribbles conductive coating), because human body has certain electric charge, will produce a touch signal at the electric capacity two ends, this touch signal produces a pulse signal by Rectified alternating current and is sent to human body touch induction IC.Human body touch induction IC on the soft-touch control control board 102 receives the human body touch signal, just sends a triggering level signal by its output OUTPUT port and carries out the shutdown action to microcontroller.After microcontroller receives the triggering level signal, send the CTRL control port that control shutdown level is given electronic switch, cut off the circuit of electrical network 101 to the power supply of main power source 103 by electronic switch from its ON/OFF port.Like this, set-top box just has been in off-mode.Whole set-top box just has only soft-touch control control board 102 in work, and other parts are all shut down because of lacking the power supply supply.
Make set-top box be converted to open state by off-mode, only need on the set-top box external conductive casing, to touch again, because human body has certain electric charge, will produce a touch signal at the electric capacity two ends, this touch signal produces a pulse signal by Rectified alternating current and is sent to human body touch induction IC.After receiving signal, human body touch induction IC sends the triggering level signal to microcontroller, microcontroller receives after the signal, the Control work level of the ON/OFF port by microcontroller reverses, and is originally that promptly high level is converted to low level, is originally that low transition is a high level.This control level arrives after the CTRL control port of electronic switch, change the state of electronic switch, promptly electronic switch is by switch off state change over switch closure state, thereby connected the access path of electrical network 101 and main power source 103, finish off-mode, set-top box successfully starts.
Fig. 3 shows the preferred inner particular circuit configurations of soft-touch control control board.
Soft-touch control control board 102 mainly comprises auxiliary electric power supply module, microcontroller, human body touch induction IC and electronic switch.The auxiliary electric power supply module provides DC power supply for microcontroller, human body touch induction IC and electronic switch.The OUTPUT port of human body touch induction IC connects the STDB/WORK port of microcontroller.The control level output port ON/OFF of microcontroller meets the control input end CTRL of electronic switch.Electronic switch disconnects according to control level or connects being connected of electrical network 101 and main power source 103.
As shown in Figure 3, the auxiliary electric power supply module comprises that transformer (being transformation coil T1), rectification circuit (promptly comprise diode D1, D2, D3, the circuit that D4 forms), filter circuit (being capacitor C 1) and voltage stabilizing circuit (promptly comprise resistance R 1, R2, the circuit that R3 and capacitor C 2 and diode D5 form) four parts.The voltage of electrical network 101 becomes direct current by rectification circuit with AC rectification after the transformer transformation, handle output DC source, back to microcontroller, human body touch induction IC and electronic switch through filtering and voltage stabilizing circuit again.
Transformer T1 responds to IC power source voltage to suitable as microcontroller and human body touch with the voltage transformation of electrical network 101, is little 5V in this example.What rectification circuit adopted is to get full-wave bridge rectifier circuit.Filter circuit is capacitor C 1 filter circuit.
Voltage stabilizing circuit is made up of divider resistance, the adjustable voltage-stabiliser tube of three ends and filter capacitor.Resistance R 1, R2 and R3 constitute the series connection bleeder circuit.Resistance R 2 and resistance R 3 minutes DC power supply flow to microcontroller, human body touch induction IC and electronic switch.The reference edge of the adjustable voltage-stabiliser tube of three ends is connected between two resistance of resistance R 2, R3 branch road, and positive pole is connected on the earth terminal of resistance R 2, R3 branch road, and negative pole is connected on the other end of resistance R 2, R3 branch road.Get voltage when excessive at resistance R 2, R3 branch road, three ends are adjustable voltage-stabiliser tube D5 is with conducting, and the electrorheological that flows through resistance R 1 is big, and it is big that resistance R 1 dividing potential drop also just becomes, and the voltage of resistance R 2, R3 branch road will diminish.Get voltage when too small at resistance R 2, R3 branch road, not conducting of voltage-stabiliser tube D5 that three ends are adjustable provides electric current because capacitor C 2 is connected on the two ends of resistance R 2, R3 branch road to resistance R 2, R3 branch road, so resistance R 2, R3 branch voltage can only slowly diminish.
Microcontroller, its STDB/WORK port receives the signal of the OUTPUT port of human body touch sensible IC, when receiving the touch pulse signal, once counter-rotating takes place and (is originally that promptly high level output is converted to low level output in the output level of control level output port ON/OFF, be originally that low level output is converted to high level output), thereby the state that makes electronic switch changes (be originally that promptly switch off state then changes the micro switch closure state, be originally switch closed condition conversion micro switch off-state).
Microcontroller generally adopts single-chip microcomputer to realize, the single-chip microcomputer of selecting for use only need possess simple function.
Human body induction control IC is used for receiving the signal of human body touch set-top box external conductive casing, receive the human body touch signal after, export a trigger impulse from output OUTPUT port and give microcontroller.
Human body touch induction IC has a lot of concrete models, but the cardinal principle unanimity, what this example adopted can be the touch sensible module.This touch sensible module adopts capacitance induction principle, has ultrastability, and is not affected by environment; And have hypersensitivity, can run through the panel of any material; Adopt single 5V power supply, the touch signal receiving sensitivity is by unique external capacitor decision, and control capacittance appearance value size can make things convenient for conditioning signal sensitivity; After the street power supply and input, the output, only need control capacittance Cs, get final product operate as normal, use very simple to desired value.
Electronic switch comprises relay, triode Q1 and resistance R 4.Wherein resistance R 4 one terminates at the base stage of triode Q1, and the other end fetches control level output from microcontroller as the CTRL port of electronic switch.The grounded emitter of triode Q1, the input of collector connecting relay.Like this, when microcontroller was exported high or low level, corresponding triode Q1 was with conducting or end.
In sum, set-top box of the present utility model mainly is to realize that by the human body touch induction technology power supply of set-top box opens and close.For example, set-top box comprises a kind of external conductive casing (perhaps the part shell scribbles conductive coating) and main power source, wherein, connects a control circuit board between main power source and the electrical network.This control circuit board, include human body touch induction IC, utilize capacitance induction principle, when the external conductive casing of human body touch set-top box,, will produce a touch signal at the electric capacity two ends because human body has certain electric charge, this touch signal produces a pulse signal by Rectified alternating current and is sent to human body touch induction IC, human body touch induction IC handles the signal of input, and the 5VCMOS level signal of exporting a standard from output pin is finished the collection and the work of treatment of touch signal to microcontroller.Microcontroller, after receiving the touch signal that human body touch IC sends, the output control signal corresponding is given electronic switch, and the state of control electronic switch is realized the startup and shutdown of set-top box.
Utilize the utility model, only need can realize the switching on and shutting down of set-top box with some places of set-top box shell under the have gentle hands light touches, provide a kind of method for start-up and shutdown very easily to the user, easily realized switching on and shutting down thereby especially when light is dark, can allow the user need not seek the start button.And at this moment the control circuit board power consumption is only arranged, and the power of control circuit board is little, cost is low, and power consumption is stable, and the switching on and shutting down of this moment are real switching on and shutting down.