CN201750010U

CN201750010U - Remote control arrange specific to digital television set-top box

Info

Publication number: CN201750010U
Application number: CN2010202667411U
Authority: CN
Inventors: 郭文柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-18
Filing date: 2010-07-18
Publication date: 2011-02-16
Anticipated expiration: 2020-07-18

Abstract

The utility model relates to a remote control arrange specific to a digital television set-top box. The structure is that: a jack 2 is formed at the back of a casing 1; a power plug 3 is arranged at a side; outlets XS1, XS2, and XS3 are fixed on a circuit board 4; and a circuit of the circuit board 4 is provided therein with a voltage stabilizing circuit 5 consisting of a resistor, a capacitor, and a voltage stabilizing tube and the like and connected with a power input end, an infrared receiving control circuit 6 consisting of an infrared connector, an amplifier, a decoding integrated circuit block, a resistor, a capacitor and the like, and an overvoltage protection circuit 7 consisting of a resistor, and a one-way thyristor and the like. The arrange regulates television programs by using an original set-top box remote controller and shut down the power of a TV and a set-top box directly, thereby eliminating waste of standby energy; the power can be shut down automatically within one second in case of power failure and high voltage invasion in use so as to ensure the security of the TV and the set-top box; moreover, the product has an output power of more than 2KW and instant contact current of more than 30A, suitable for televisions of all brands.

Description

The special-purpose remote control insert row of digital television set-top box

Technical field the utility model relates to the remote control insert row that is fit to the special use of digital television set-top box.

Background technology is along with the broadcasting and TV cause develops rapidly, and Digital Television has been come into huge numbers of families, and people will close pretty troublesome when switch television set, set-top box respectively; For convenience, the somebody has only closed television set with remote controller, and television set, set-top box all are in holding state in fact, not outage, and energy waste is very big like this; Because circuit is charged, particularly thundery sky exists the hidden danger that television set is caused accidental damage.

The difference switch television set that summary of the invention exists when seeing Digital Television for the solution people, the trouble of set-top box, with the energy waste that therefore causes, reach television set and easily cause disadvantages such as accidental damage, the utility model provides the remote control insert row of a kind of digital television set-top box special use.The design of the special-purpose remote control insert row of the utility model digital television set-top box is: be provided with voltage stabilizing circuit, infrared ray reception control circuit and overvoltage crowbar on the circuit board of insert row; use the remote controller of former television set, set-top box to control, its structure includes housing, jack, attaching plug, socket XS comprehensively ₁, XS ₂, XS ₃, also include the circuit board that in housing, is provided with, the capacitor C that in board circuit, is provided with by the parallel connection that is connected successively with power input ₆With dropping resistor R ₈, rectifier bridge VD ₃-VD ₆, with rectifier bridge VD ₃-VD ₆Filter capacitor C in parallel ₄, C ₅, dropping resistor R ₄, and dropping resistor R ₄The voltage-stabiliser tube VD of the parallel connection that connects ₁With filter capacitor C ₁, C ₂The voltage stabilizing circuit of Gou Chenging together, the signal amplifier VT that connects successively by infrared receiving terminal RH ₁, decoding integrated circuit piece IC, decoding integrated circuit piece IC the parallel resistor R that connects of OSC end ₂And capacitor C ₃The biasing resistance R that the concussion network of forming, the output TP of decoding integrated circuit piece IC are connecting successively ₃, power amplifier VT ₂, relay K, relay K action connection point K ₁, the parallel connection that is connected with relay K biasing resistance R ₅Light-emitting diode VD with indicator light ₂, with amplifier VT ₁The load resistance R that connects ₁, and with action connection point K ₁The socket XS that is connecting ₁, XS ₂, XS ₃The infrared ray reception control circuit of Gou Chenging together, by with power output end and the resistance R that connects ₇, R ₆, variable resistor W ₁, and variable resistor W ₁The one-way SCR BT of Lian Jieing successively ₁The overvoltage crowbar that constitutes together with decoding integrated circuit piece IC.The special-purpose remote control insert row of the utility model digital television set-top box, utilize the power key in the former machine set-top box remote controller or the learning functionality of self-defining key and remote controller itself, before use receive frequency in the insert row is copied in the remote controller to power key in the TV controlled area or self-defining key and get final product.The characteristics of the special-purpose remote control insert row of the utility model television set top box are: 1, this insert row utilize former set-top box remote controller can be directly the AC power of closing television machine and set-top box simultaneously, solved the trouble that to remove closing television machine and set-top box power supply respectively of the prior art, eliminated the waste (television set can be saved 100 yuan every year) of the daily standby energy, adopt capacitive step-down technology in the circuit, city's electrical network there is compensating action, so readiness no power consumption at ordinary times.2, utilize the control operation of former machine set-top box remote controller, get final product Switching Power Supply, can adjust TV programme again, flexible and convenient operation operates steadily, and is effective.3, this insert row has " over-voltage protecting function "; in use, in case when power failure and high pressure taking place invading, this product can be cut off the electricity supply in a second automatically; the television set in guaranteeing to use and the safety of set-top box also can prevent the accidental damage that thunder and lightning causes television set.4, this product power output is greater than 2 kilowatts, moment the contact electric current greater than 30A, the television set that adapts to various brands uses.

Description of drawings Fig. 1, be the structural representation of the special-purpose remote control insert row of the utility model digital television set-top box.Fig. 2, be the circuit diagram of the special-purpose remote control insert row of the utility model digital television set-top box.

Embodiment has further understanding for structure and the principle to the special-purpose remote control insert row of the utility model digital television set-top box, and details are as follows in conjunction with the accompanying drawings:

With reference to accompanying drawing 1,2, the structure of the special-purpose remote control insert row of the utility model digital television set-top box includes the plastic casing 1 among the figure, on the back of housing 1, be provided with jack 2,, be fixed on the socket XS on the circuit board 4 at the attaching plug 3 that housing 1 side is connected with housing interior circuit board 4 ₁, XS ₂, XS ₃The capacitor C that in circuit board 4 circuit, is provided with by the parallel connection that is connected successively with power input ₆With dropping resistor R ₈, rectifier bridge VD ₃-VD ₆, with rectifier bridge VD ₃-VD ₆Filter capacitor C in parallel ₄, C ₅, dropping resistor R ₄, and and dropping resistor R ₄The voltage-stabiliser tube VD of the parallel connection that connects ₁With filter capacitor C ₁, C ₂Constitute the voltage stabilizing circuit 5 of 4.7V together.The signal amplifier VT that connects successively by infrared receiving terminal RH ₁, decoding integrated circuit piece IC, decoding integrated circuit piece IC the parallel resistor R that connects of OSC end ₂And capacitor C ₃The concussion network of forming, the biasing resistance R that the output TP of decoding integrated circuit piece IC is connecting successively ₃, power amplifier VT ₂, relay K, relay K action connection point K ₁, the biasing resistance R of the parallel connection that is connected successively with relay K ₅Light-emitting diode VD with indicator light ₂, with amplifier VT ₁The load resistance R that connects ₁, and and action connection point K ₁The socket XS that is connecting ₁, XS ₂, XS ₃The infrared ray reception control circuit 6 of Gou Chenging together.By with power output end and the resistance R that connects ₇, R ₆, variable resistor W ₁, and variable resistor W ₁The one-way SCR BT of Lian Jieing successively ₁The overvoltage crowbar 7 that constitutes together with decoding integrated circuit piece IC.The resistance R in the voltage stabilizing circuit 5 wherein ₄Connecting voltage-stabiliser tube VD in parallel ₁With filter capacitor C ₁, C ₂Positive pole, voltage-stabiliser tube VD ₁With filter capacitor C ₁, C ₂Negative pole meet rectifier bridge VD ₃-VD ₆Negative pole.Variable resistor W in the overvoltage crowbar 7 ₁With one-way SCR BT ₁Trigger electrode connect one-way SCR BT ₁Positive pole meet the positive source VDD of decoding integrated circuit piece IC, negative pole meets the power cathode VSS of decoding integrated circuit piece IC.

Operation principle: when clicking set-top box remote controller switch switch, after the infrared receiving terminal RH in this insert row receives signal, through signal amplifier VT ₁Amplify the input DI that sends into decoding integrated circuit piece IC and carry out the frequency-selecting decoding, the output TP of decoding integrated circuit piece IC becomes high level 3-3.5V self-locking, power amplifier VT by low level 0V ₂Conducting, the action connection point K of relay K ₁Adhesive, the socket XS of output ₁, XS ₂, XS ₃The output of 220V voltage is arranged, the working power of television set and set-top box is provided.

When clicking the switch switch of set-top box remote controller once more, signal output TP after decoding integrated circuit piece IC frequency-selecting decoding becomes low level 0V by high level 3-3.5V, power amplifier VT ₂Become by conducting and to end the action connection point K of relay K ₁Cut off the electricity supply socket XS ₁, XS ₂, XS ₃Output outage.

When infrared ray reception control circuit during, because during the overtension (285-295V) that a variety of causes causes, voltage is through resistance R in operate as normal ₆, R ₇, variable resistor W ₁Dividing potential drop, one-way SCR BT ₁Conducting, the operating voltage of decoding integrated circuit piece IC becomes 0.7V, power amplifier VT by original 4.7V ₂End output socket XS ₁, XS ₂, XS ₃No-voltage is exported, thereby has protected the work safety of television set and set-top box.

Claims

1. the special-purpose remote control insert row of a digital television set-top box, it includes housing (1), jack (2), attaching plug (3), socket XS ₁, XS ₂, XS ₃, it is characterized in that it also includes the circuit board (4) that is provided with in housing (1), the capacitor C that in circuit board (4) circuit, is provided with by the parallel connection that is connected successively with power input ₆With dropping resistor R ₈, rectifier bridge VD ₃-VD ₆, with rectifier bridge VD ₃-VD ₆Filter capacitor C in parallel ₄, C ₅, dropping resistor R ₄, and dropping resistor R ₄The voltage-stabiliser tube VD of the parallel connection that connects ₁With filter capacitor C ₁, C ₂The voltage stabilizing circuit of Gou Chenging (5) together, the signal amplifier VT that connects successively by infrared receiving terminal RH ₁, decoding integrated circuit piece IC, decoding integrated circuit piece IC the parallel resistor R that connects of OSC end ₂And capacitor C ₃The biasing resistance R that the concussion network of forming, the output TP of decoding integrated circuit piece IC are connecting successively ₃, power amplifier VT ₂, relay K, relay K action connection point K ₁, the parallel connection that is connected with relay K biasing resistance R ₅Light-emitting diode VD with indicator light ₂, with amplifier VT ₁The load resistance R that connects ₁, and and action connection point K ₁The socket XS that is connecting ₁, XS ₂, XS ₃The infrared ray reception control circuit (6) of Gou Chenging together, by with power output end and the resistance R that connects ₇, R ₆, variable resistor W ₁, and variable resistor W ₁The one-way SCR BT that is connecting successively ₁The overvoltage crowbar (7) that constitutes together with decoding integrated circuit piece IC.

2. the special-purpose remote control insert row of the described digital television set-top box of root a tree name claim 1 is characterized in that the dropping resistor R in the voltage stabilizing circuit (5) ₄Connecting voltage-stabiliser tube VD in parallel ₁, and filter capacitor C ₁, C ₂Positive pole, voltage-stabiliser tube VD in parallel ₁, filter capacitor C ₁, C ₂Negative pole meet rectifier bridge VD ₃-VD ₆Negative pole.

3. the special-purpose remote control insert row of the described digital television set-top box of root a tree name claim 1 is characterized in that the variable resistor W in the overvoltage crowbar (7) ₁With one-way SCR BT ₁Trigger electrode connect one-way SCR BT ₁Positive pole meet the positive source VDD of decoding integrated circuit piece IC, negative pole meets the power cathode VSS of decoding integrated circuit piece IC.

4. the special-purpose remote control insert row of the described digital television set-top box of root a tree name claim 1 is characterized in that jack (2) is located on the back of housing (1).

5. the special-purpose remote control insert row of the described digital television set-top box of root a tree name claim 1 is characterized in that socket XS ₁, XS ₂, XS ₃Be fixed on the circuit board (4).