CN2054239U - Multifunction tv remote-controller - Google Patents

Abstract

The utility model relates to an ultrasonic wave remote controller for TV set, comprising an emitting unit and a receiving machine. The emitting unit is provided with two buttons which are used for individually controlling the emitting 38KHZ and 42KHZ signal, and the receiving machine selects the received signal through a frequency selection loop. Then the receiving machine obtains the electric tuning voltage of the television, the control voltage of the frequency range and the sound volume control by a pulse distributor, the forming circuit of a tuning voltage, a two-way switch and a sound volume control circuit. The receiving machine is simultaneously used as a power supply switching control when the sound volume is at the lowest order. The selected television channels are displayed by a nixie tube in number, and the sound volume is indicated by a light emitting diode.

Description

Multifunction TV remote-controller

The present invention relates to remote controller, more particularly relate to a kind of remote controller with ultrasonic wave control TV channel and volume.

The early stage television set of producing, though be import or homemade, the overwhelming majority all is not with remote control, this feels inconvenience in the use very much, if can give this class TV additional a simple device, needn't do big change and reach basic remote control purpose TV set circuit itself again, this has very big Practical significance.The remote control that is used for the television set wireless remote control at present has infrared remote controller basically, three kinds of ultra-sonic remote control device and radio remote controllers, except that the radio remote controller antijamming capability is relatively poor be used less, commonly used is infrared remote controller and ultra-sonic remote control device.But existing this class device also exists some shortcoming or deficiency.Television set multifunctional remote controlller described in Chinese patent application number 872,111,504 1 literary compositions adopts infrared ray control, and circuit relates to modulation Jie and transfers, electronic switch, counters etc. must increase an all-channel electronic tuning unit outward, circuit structure complexity not only, and corresponding cost is also higher.Existing product LK-138 type TV remote controller and for example, the control of employing ultrasonic wave, its controlled function is less, can only remote-controlled power switch and select four channel programs, there is not the volume remote control, and frequency range conversion (conversion of L, H, U frequency range) voltage is positive voltage, therefore can only be applicable to the television set of positive voltage control frequency range conversion, just can't use for the television set of zero potential control frequency range conversion.

Purpose of the present invention realizes the switch TV set power with better simply circuit structure exactly, the remote control of multiple functions such as conversion TV sets channel and adjusting volume, selected channel shows that with numeral volume is represented with luminous tube, and frequency range control is applicable to the television set of any model.

Fig. 1 is the simple block diagram of remote controller of the present invention.

Fig. 2 is the transmitter unit schematic diagram.

Fig. 3 is a receiver prestage schematic diagram.

Fig. 4 is that pulsqe distributor and tuning voltage form circuit theory diagrams.

Fig. 5 is volume control principle figure.

Fig. 6 is the bidirectional switch schematic diagram.

Fig. 7 is the decoder schematic diagram.

Now by reference to the accompanying drawings the present invention is elaborated.

As shown in Figure 1, remote controller of the present invention comprises a transmitter unit and receiving element two parts.Transmitter unit is that an independently little control is closed, and by user's operation, closing has two control buttons, is respectively applied for the control volume, mains switch and converted channel.Receiving element is connected with television set by several leads, the television channel and the some light-emitting diodes indication volume that have the charactron demonstration to be received on the receiving element.

Fig. 2 is the transmitter unit schematic diagram, transistor T ₄₂With transformer B ₁Form a ultrasonic oscillator, K ₁K ₂Be the action button of control vibration, when K1 connected, oscillator produced the signal of 42KHZ, K ₂During connection, capacitor C ₄₀With C ₄₂Parallel connection, oscillator produces the 38KHZ signal, by transistor T ₄₂The signal that produces is coupled to transistor T 43 T44 amplification and delivers to ultrasonic transducer T1 through transformer B2 through capacitor C44 and sends.As long as therefore the user presses K ₁Or K ₂, just can control emission 42KHZ or 38KHZ signal.

Fig. 3 is a receiver prestage schematic diagram.By ultrasonic transducer T ₂Receive transmitter unit ultrasonic waves transmitted signal, and convert the signal of telecommunication to through transistor T ₁T ₂Amplify, the signal after amplifying is divided into two-way, and one the tunnel through coupling capacitance C ₆Deliver to by diode D ₁D ₂The amplitude limiter amplitude limit of forming is again through capacitor C ₇Be coupled to inductance L ₁Capacitor C ₈The 38KHZ frequency-selective circuit frequency-selecting of forming, selected 38KHZ signal is through coupling capacitor C ₉Deliver to transistor T ₃T ₄Dual-stage amplifier amplifies, transistor T ₄The signal of output is by diode D ₃D ₄Voltage multiplying rectifier becomes direct voltage, by this direct voltage oxide-semiconductor control transistors T ₅Conducting or end, when transmitter unit is not launched the 38KHZ signal, transistor T ₅End, its current collection is high potential very, when transmitter unit emission 38KHZ signal, and when being received transducer and receiving, transistor T ₅Conducting, its collector electrode becomes electronegative potential, whether launches according to transmitter so just to have obtained corresponding pulse signal, and this pulse signal is by pulsqe distributor IC ₂Be used for controlling volume.Same principle is by transistor T ₁T ₂Another road signal after the amplification is through capacitor C ₁₅Be coupled to diode D ₅D ₆Amplitude limit, and by inductance L ₂Capacitor C ₁₇The 42KHZ frequency-selective circuit frequency-selecting of forming is again through transistor T ₆T ₇Amplify and diode D ₇D ₈Voltage multiplying rectifier obtains direct voltage, by this direct voltage oxide-semiconductor control transistors T ₈Conducting or end, make transistor T thereby whether launch the 42KHZ signal according to transmitter unit ₈Export corresponding pulse signal.

Fig. 4 is that pulsqe distributor and tuning voltage form circuit theory diagrams, from receiver prestage transistor T ₈Pulse signal deliver to the pulse distribution integrated circuit (IC) ₁Input (IC ₁Adopt the CD4017 integrated circuit).IC ₁10 outputs are arranged,, can make 10 outputs become high potential, IC in proper order according to input pulse ₁10 outputs respectively through phase inverter T ₂₉-T ₃₈After be added to switching transistor T ₁₉-T ₂₈, work as IC ₁The input input pulse and when making a certain output become high potential, with the corresponding switching transistor of this output with regard to conducting.Switching transistor T ₁₉-T ₂₈Collector electrode to ground respectively be connected to a semifixed resistor R ₃₅-R ₄₄, the cursor slide of each semifixed resistor is through diode D ₃₀-D ₃₉After the electric tuning voltage input end that links together and deliver to the television set high-frequency tuner because at any one time, IC ₁Having only an output is high potential, and therefore the semifixed resistor that can regulate on the respective switch transistor obtains desired electric tuning voltage, just gives and selects required television channel, because IC ₁10 outputs are arranged, so this receiver can give the TV programme of selecting 10 channels.At IC ₁Each output also be connected to diode D respectively ₄₀-D ₄₉, the negative electrode of these diodes is connected to the input of bidirectional switch circuit on demand, with output frequency range control voltage (being L, H, U, frequency range control voltage).Each phase inverter T ₂₉-T ₃₈Collector electrode also receive the input of decoding circuit respectively, by decoding circuit, nixie display is according to IC ₁Output show corresponding digital (being 0-9).

Fig. 5 is the volume control circuit schematic diagram, from receiver prestage transistor T ₅Pulse signal send into the pulse distribution integrated circuit (IC) ₂The input of (CD4017 integrated circuit), its output (except 3 pin of original position) is connected to diode D respectively ₅₃-D ₅₇And resistance R ₈₁-R ₈₅, the other end of each resistance links together and resistance R ₇₈Join, from IC ₂The high level of arbitrary output is by diode D ₅₃-D ₅₇And resistance R ₈₁-R ₈₅In corresponding one group, and through series resistance R ₇₈, semifixed resistor R ₇₇Be added to transistor T ₄₁Base stage because resistance R ₇₉The dividing potential drop effect, make transistor T ₄₁Work in the range of linearity, because resistance R ₈₁-R ₈₅Resistance difference, so IC ₂Different outputs are high potential, just can make transistor be operated in different linear zones, and promptly this transistor is equivalent to a variable resistor, and its collector electrode links to each other with the cursor slide end of tv volume potentiometer, so integrated circuit (IC) ₂The state of output has determined the volume of television set.At IC ₂Original position output 3 pin on be connected to by resistance R ₇₅, capacitor C ₃₃, voltage stabilizing didoe D ₅₀And transistor T ₃₉T ₄₀The time-delay relay control circuit of forming, its delay time is about 4-5 second, i.e. (IC when the volume minimum position ₂3 pin be high level) to relay J be discharged through 4-5, connect with TV set power in the contact of relay, so relay discharges the closing television electromechanics source that gets final product.At IC ₂Output also be connected to light-emitting diode D respectively ₅₈-D ₆₄Thereby, can indicate volume by light-emitting diode.

Fig. 6 is the bidirectional switch schematic diagram, in existing television set, frequency range (L, H, the U frequency range) control voltage and incomplete same has plenty of positive voltage control, and what also have uses the connecting to neutral control of Electric potentials, this bidirectional switch designs for adapting to different television sets, just can obtain the control corresponding level as long as connect different level at the A point.Used three groups of bidirectional switch circuit obtaining L among the present invention, H, three frequency ranges control of U voltage, for simplicity, existing is the example explanation with the U frequency range, one group of bidirectional switch is by inverter T ₁₀And switch transistor T ₁₁T ₁₂Form, connect the situation of positive potential for the A point, from pulsqe distributor IC ₁The high level of output passes through resistance R ₃₂Be added to transistor T ₁₀Base stage, the output of its collector electrode is by diode D ₁₉Be added to the PNP transistor T ₁₁Base stage make its conducting, thereby output U obtains a positive voltage, under A point connecting to neutral current potential situation (at this moment L, H on the television set, U all connects high potential), from pulsqe distributor IC ₁The high level of output passes through resistance R ₂₉Diode D ₁₈Be added to transistor T ₁₂Base stage make its conducting, thereby U end is through diode D ₂₁Connecting to neutral current potential and become electronegative potential.IC ₁10 through diode D ₄₀-D ₄₉Output, can receive the input of three bidirectional switch circuit by user's needs respectively.

Fig. 7 is the decoding circuit schematic diagram, and this is a decoding circuit that adopts diode matrix, and its output 1-7 is connected to the corresponding luminescence segment of common anode nixie display, and its input signal is from pulsqe distributor IC ₁Inverter T on each output ₂₉-T ₃₈Collector electrode, work as IC ₁When 10 outputs were high level respectively, nixie display just showed the 0-9 numeral respectively.

Claims (6)

1, a kind of multi-functional TV set remote-controller, described remote controller is made of transmitter unit and receiver, transmitter unit is by ultrasonic oscillator, amplifier and inverting element are formed, receiver is by receiving preposition part, pulsqe distributor, tuning voltage forms circuit, volume control circuit, bidirectional switch circuit, decoding and digital display circuit, time delay relay circuit and power circuit are formed, described remote controller is characterized in that having on the transmitter unit two control buttons to control the different frequency of emission respectively, to be used for the switch TV set power, changes volume and conversion receiving channels.

2,, it is characterized in that tranmitting frequency that two buttons on the transmitter unit control is between 38KHZ and 42KHZ as claim 1 described remote controller.

3, as claim 1 described remote controller, the switch that it is characterized in that TV set power is by the remote control of volume control button.

4, as claim 1 described remote controller, it is characterized in that receiver adopts the bidirectional switch circuit to obtain L, H, U frequency range control voltage, the television set that can adapt to different model is done frequency range control.

5,, it is characterized in that described bidirectional switch is made up of PNP and NPN transistor as claim 4 described remote controllers.

6,, it is characterized in that the channel that remote control is selected is shown by the charactron numeral as claim 1 described remote controller.

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