CN2242554Y - Computerized device for TV signal distribution or switching - Google Patents

Abstract

The utility model belongs to the technical field of a computerized device for TV signal distribution or switching, mainly solving the technical key problems like volume and image control, etc. The computerized device for TV signal distribution or switching is mainly characterized in that the computerized device for TV signal distribution or switching is composed of a tuner, an intermediate amplifying unit circuit, a modulator, a control unit, a power supply, a CPU, etc. The optimal effect of the volume and image control can be achieved through the main characteristics. TV channels can be automatically searched and selected, and characters can be automatically displayed. The requirements of cable TV users can be automatically adapted. The utility model can be widely used for the occasions like families with TV sets, guesthouses with TV sets, etc.

Description

The computer-shape television repeater

A kind of have tuner, in put the computer-shape television repeater of element circuit and modulator, be mainly used in the TV remote-control channel selection, belong to the television repeater technical field.

Along with China's cable tv broadcast career development, tv programme source is enriched constantly, original mechanical type selector on the television set, and both channel converter can not satisfy user's demand.For this reason, type channel converter and machine outer type channel converter in the television set have appearred, the present machine outer type channel converter that occurs on the market, though kind is a lot, but function is less, mainly be to be used for channel switch and timing shutdown, uncontrollable for the volume image, do not possess automatic search, function such as character display on screen yet, and frequency range is narrower, from 49.75～550MHZ, power range is less generally to be 220V ± 10%, and is that this voltage regulation way of series connection voltage stabilizing does not possess power savings, do not have simultaneously AGC yet, the AFC function is brought inconvenience to user's use.

Goal of the invention of the present utility model overcomes above-mentioned defective exactly, invents a kind of multiple functional, user-friendly computer-shape television repeater, mainly solves key problem in technology problems such as volume, image control.

The utility model is to realize like this, 1 describe in conjunction with the accompanying drawings, in order to realize multi-purpose computer type television repeater, will by CPU4 control have tuner 1, in put the computer-shape television repeater of element circuit 2, modulator 3, infrared reception 7, it is characterized in that it partly is made of control circuit 5, power supply 6 etc.; Tuner 1 is controlled by CPU4, send VL here, VH, VU, signals such as UT, then tuner 1 output IF signal with in put element circuit 2 and be connected, in put element circuit 2 and the IF signal is demodulated to vision signal is connected with modulator 3, putting element circuit 2 simultaneously is connected with CPU4, receive the AFT signal, and send AFC signal to CPU4, modulator 3 also is connected with control circuit 5, the character switching signal that reception is sent here, CPU4 removes and tuner 1, in put element circuit 2, outside control circuit 5 connects, also be connected with infrared reception 7, infrared reception 7 receives the controlled infrared signal that infrared remote-control emitters are sent here, send CPU4 after becoming the signal of telecommunication.For volume, image are controlled, the computer-shape television repeater is characterized in that, control circuit 5 is that four integrated circuits such as 6 inverters, NE556 and two CD4053 bidirectional analogs of double oscillator switch and several triodes, Resistor-Capacitor Unit etc. are formed by CD40696, wherein 1 pin and the R of CD4069 ₃₁₁, R ₃₂₂Be connected its 2 pin and CD4053 (N ₃₀₄) 5 pin link to each other with CPU4, its 3 pin passes through resistance R ₃₀₁Link to each other 4 pin and 12 pin and CD4053 (N with 6 pin ₃₀₃) link to each other, its 5 pin passes through resistance R ₃₀₂And CD4053 (N ₃₀₃) link to each other, its 7 pin ground connection, its 8 pin links to each other with CPU4 with 10 pin, and its 9 pin links to each other with NE556, its 11 pin and NE556 and CD4053 (N ₃₀₄) link to each other its 12 pin and NE556, CD4053 (N ₃₀₃) link to each other its 13 pin and R ₃₀₆And R ₃₀₆, R ₃₁₀Link to each other, its 14 pin CPU4, NE556, CD4053 etc. link to each other; 1 pin and the resistance R of NE556 ₃₀₄, R ₃₀₅Link to each other its 2 pin and 6 pin, R ₃₀₅Join, and pass through capacitor C ₃₀₂Ground connection, its 4 pin and CD4053 (N ₃₀₄) link to each other its 5 pin and diode V ₃₀₃Link to each other, its 7 pin ground connection, its 8 pin links to each other with 12 pin, and passes through C ₃₀₃Ground connection, its 9 pin and CD4053 (N ₃₀₄) link to each other its 10 pin and CD4053 (N ₃₀₃) link to each other its 13 pin and resistance R ₃₀₇, R ₃₀₈Link to each other, its 14 pin links to each other with CPU4, CD0453 (N ₃₀₃) 2,6,7,8 pin ground connection, the R among its 4 pin and Fig. 2 ₁₀₅Link to each other the R among its 5 pin and Fig. 2 ₁₀₃, R ₁₀₈Link to each other, its 9 pin links to each other with CD4069, and its 10 pin links to each other with NE556, its 15 pin and CD4053 (N ₃₀₄) link to each other its 16 pin and CPU4, R ₃₁₈, CD4053 (N ₃₀₄), R ₃₁₅Link to each other CD4053 (N ₃₀₄) 1 pin and R ₃₁₅, R ₃₁₆Link to each other, its 2 pin links to each other with 14 pin, and its 3 pin links to each other with CD4069, NE556, and its 4 pin links to each other with NE556, and its 5 pin links to each other with CPU4, and its 6 pin links to each other with 8 pin, its 7 pin ground connection, its 9 pin and CD4053 (N ₃₀₃) link to each other, and pass through C ₃₀₈Ground connection, its 10 pin links to each other with CPU4, its 11 pin and R ₃₁₈Link to each other, and pass through C ₃₀₈Ground connection, the R among its 12 pin and Fig. 3 ₂₂₆, triode V ₂₀₃Emitter link to each other, also and C ₃₀₉Link to each other its 13 pin and R ₃₁₇, R ₃₁₉, R ₃₁₆Link to each other its 15 pin and triode V ₃₀₂Base stage link to each other its 16 pin and R ₃₁₅, R ₃₁₈, N ₃₀₃Link to each other and see Fig. 4.For the computer-shape television repeater that economizes on electricity is characterized in that, power supply adopts switching power supply, and it mainly contains SG3524 Switching Power Supply oscillator, transformer T ₄₀₁, T ₄₀₂Form with several diodes, capacitance resistance component and triode, wherein 1 pin and the R of SG3542 ₄₀₅, R ₄₀₆Link to each other its 2 pin and R ₄₀₇, link to each other, and pass through R ₁₁₁Link to each other with 16 pin, and and source jack-socket 1, N ₄₀₂Link to each other its 4 pin and transformer T ₄₀₁Pay end and link to each other, its 5 pin, 8 pin ground connection, its 6 pin passes through R ₄₀₈Ground connection, its 7 pin and 6 pin join, and pass through capacitor C ₄₀₃Ground connection, its 9 pin passes through resistance R ₄₀₉And capacitor C ₄₀₄Ground connection, its 10 pin and triode V ₄₀₇Collector electrode, R ₄₁₂Link to each other, its 11 pin and 14 pin ground connection, its 12 pin, 13 pin pass through resistance R ₄₁₀With triode V ₄₀₆Base stage link to each other, its 15 pin passes through resistance R ₄₀₂, diode V ₄₀₁With transformer T ₄₀₁Pay end and link to each other, its 16 pin is by diode V ₄₀₈, R ₄₀₃With transformer T ₄₀₁Pay the continuous particular circuit configurations figure of end and see Fig. 5, for the needs that adapt to the different field intensity of user make image reach optimum efficiency, the computer-shape television repeater is characterized in that, adopts AGC, AFC circuit; The computer-shape television repeater is characterized in that, with tuner 1, in put element circuit 2, modulator 3, CPU4, control circuit 5 and accomplish on the wiring board, power supply 6 is made a wiring board, two wiring boards all is fixed on the substrate of shell, and builds loam cake and front panel.The operation principle of the present utility model and the course of work, when hand-held remote controller or keyboard switch of the present utility model send instruction, CPU4 starts working, the CPU4 circuit structure is seen Fig. 2, CPU4 carries wave band voltage and tuning voltage to tuner 1 on the one hand, the circuit structure diagram of tuner 1 is seen the U2 part among Fig. 3, accept the instruction of CPU4 when tuner 1 after, just export corresponding signal IF, put in delivering in the element circuit 2, in put element circuit and see Fig. 3 because the effect of putting application-specific integrated circuit (ASIC) among the TA7680, the 38MHZ signal decoding of input occurred signal and audio signal are delivered in the control circuit 5 frequently.CPU4 send the character display control signal to control circuit 5 simultaneously, in the control circuit 5 because the effect of CD4053, when the signal of CPU4 arrives, the output high level, character display on television screen, after in control circuit 5 is received, putting the vision signal that element circuit 2 decodes, control circuit 5 is exported correspondingly vision signal simultaneously and is given modulator 3 under the instruction of CPU4, the circuit structure diagram of modulator 3 is seen the TSV2-12 part among Fig. 4, modulator 3 is modulated into radiofrequency signal with vision signal, and television set is delivered in output.From the circuit theory explanation, utilize the tuner 1 of band CATV additional channel to receive cable TV signal, become the intermediate-freuqncy signal of 38MHZ, by in put element circuit 2 amplifying signals and demodulate vision signal, modulator 3 up-converts to 1 channel 49.75MHZ with vision signal and is transported to television set.CPU4 exports to the unit tuner 1 required various voltages and controls control circuit 5 and carry out the signal switching, control circuit 5 is mainly used in capable field sync signal to be separated, vision signal is switched, and for CPU4 work provides various benchmark, shows on video screen to realize various information.Power supply 6 is mainly each unit different power voltage supplies is provided.

Main feature of the present utility model is can control volume and image, can reach optimum efficiency, and sound accompaniment can be carried out remote control.Can search for channel selection automatically, the character that character display and assurance show on video screen is stable.When the TV no signal, to occur be black level to no snowflake on its screen, can distinguish whether TV signal is arranged, because AGC, AFC function are arranged, can adapt to cable TV subscriber's requirement automatically.Can also cooperate cable TV station to carry out user's deciphering.Because adopt switching power supply, power range can reach 220 ± 20%, economize on electricity can reach 30%.Wide frequency range is from 49.75MHZ～870MHZ.The utility model is multiple functional, has timing function, and is cheap, easy to use, and the user only needs the utility model is connected with television set and can uses by plug-socket.It is widely used in family, the hotels and other places of TV.Description of drawings:

Fig. 1---frame structure schematic diagram of the present utility model

Fig. 2---cpu circuit structural representation of the present utility model

▲ 1  5---channel

▲ 2  6---volumes

 3---manually

▲ 4---manually

Z------is automatic

D------power supply

Fig. 3---put the element circuit structural representation in of the present utility model

Fig. 4---control circuit structural representation of the present utility model

Fig. 5---the utility model circuit construction of electric power schematic diagram

Embodiment:

The utility model is according to circuit principle structure figure, and the integrated circuit purchased, triode, diode, Resistor-Capacitor Unit etc. are assembled welding, and CPU4 control is to be made of M50436, and its 1 pin passes through R ₁₂₇And V ₁₁₃The base stage of triode is connected.Its 2 pin and resistance ₁₁₃Triode V ₁₁₂Base stage be connected, and pass through R ₁₁₄, diode V ₁₁₀Link to each other with 10 pin, and pass through R ₁₁₅Resistance R with 52 pin, 37 pin, 38 pin and 27 pin ₁₂₅, R ₁₂₄, diode, R ₁₂₆Deng continuous, and pass through capacitor C ₁₀₂Ground connection is passed through R simultaneously ₁₁₁, R ₁₀₁Link to each other with source jack-socket 3, and and R ₁₀₁, R ₁₀₂, R ₁₀₃, R ₁₀₄, R ₁₀₅Link to each other.Its 5 pin links to each other with source jack-socket 2.The 3 pin R of its 6 pin and LA7910 ₂₃₃Link to each other.4 pin, the R of its 7 pin and LA7910 ₂₃₂Link to each other.R among its 8 pin and Fig. 3 ₂₀₈, R ₂₀7, R ₂₀₉Link to each other.Its 9 pin passes through R ₁₁₂Link to each other with source jack-socket 3.4 pin of its 16 pin and M58655 link to each other.Its 17 pin passes through R ₁₀₆, diode V ₁₀₁SKIP links to each other with button.Its 18 pin passes through R ₁₀₇, V ₁₀₁Automatically link to each other with button.Its 19 pin passes through R ₁₀₈, V ₁₀₁With the CD4053 (N among Fig. 4 ₃₀₃) 5 pin link to each other and link to each other with BAND, volume, AFT button.Its 20 pin passes through R ₁₀₉, R ₁₀₁Connecing key with channel key, power supply links to each other.Its 24 pin passes through R ₁₁₀With the N among Fig. 4 ₃₀₃4 pin link to each other.25,26 pin ground connection.Its 27 pin passes through C ₁₀₄Ground connection.28,29 pin link to each other with Z101, and pass through R ₁₀₄, R ₁₀₃Ground connection.Its 30 pin is by diode V ₁₀₅Link to each other with power supply, and and the CLK pin of M58655 join.Its 31 pin passes through V ₁₀₅Link to each other with manual, BAND button, and and the C of M58655 ₁Pin joins.Its 32 pin passes through V ₁₀₅Join with channel, volume button, and and N ₁₀₂C ₂Pin joins.Its 33 pin passes through V ₁₀₅Join with channel, volume button, and and N ₁₀₂C ₃Pin joins.Its 34 pin and N ₁₀₂12 pin join.C among its 35 pin and Fig. 4 ₂₀₁, R ₂₀₂, R ₂₀₄Join.R among its 36 pin and Fig. 4 ₃₀₄5 pin join and and N ₃₀₁2 pin join.Its 37 pin passes through R ₁₂₅And N ₁₀₂1 pin join, and pass through C ₁₁₅, C ₁₁₆Ground connection.Its 39 pin～42 pin pass through R respectively ₁₂₃～R ₁₂₀Ground connection.N among its 44 pin and Fig. 4 ₃₀₄10 pin join.48,49 pin pass through C respectively ₁₀₆, C ₁₀₇Ground connection, and pass through R ₁₁₉Mutual connection.N among its 50 pin and Fig. 4 ₃₀₁10 pin join.N among its 51 pin and Fig. 4 ₃₀₁8 pin join.

Claims (5)

1. computer-shape television repeater, by CPU4 control have tuner 1, in put the computer-shape television repeater of element circuit 2, modulator 3, infrared acceptance 7, it is characterized in that it partly is made of control circuit 5, power supply 6 etc.; Tuner 1 and CPU ₄Connect, and with in put element circuit 2 and be connected; In put element circuit 2 and be connected, and and CPU with modulator 3 ₄Connect; Modulator 3 also is connected CPU with control circuit 5 ₄Except that with tuner 1, in put element circuit 2, control circuit 5 be connected, also be connected with infrared reception 7.

2. as the said computer-shape television repeater of claim 1, it is characterized in that, control circuit 5 is made up of four integrated circuits such as CD40696 inverter, NE556 double oscillator and two CD4053 bidirectional analog switches and several triodes, Resistor-Capacitor Unit etc., wherein 1 pin and the R of CD4069 ₃₁₁, R ₃₂₂Be connected its 2 pin and CD4053 (N ₃₀₄) 5 pin link to each other with CPU4, its 3 pin passes through resistance R ₃₀₁Link to each other its 4 pin and 12 pin and CD4053 (N with 6 pin ₃₀₃) link to each other, its 5 pin passes through R ₃₀₂And CD4053 (N ₃₀₃) link to each other, its 7 pin ground connection, its 8 pin, 10 pin link to each other with CPU4, and its 9 pin links to each other with NE556, its 11 pin and NE556, CD4053 (N ₃₀₄) link to each other; Its 12 pin and NE556, CD4053 (N ₃₀₃) link to each other its 13 pin and R ₃₀₆, R ₃₁₀Link to each other, its 14 pin links to each other with CPU4, NE556, CD4053; 1 pin and the resistance R of NE556 ₃₀₅, R ₃₀₄Link to each other its 2 pin and 6 pin, R ₃₀₅Join, and pass through capacitor C ₃₀₂Ground connection, its 4 pin and CD4053 (N ₃₀₄) link to each other its 5 pin and diode V ₃₀₃Link to each other, its 7 pin ground connection, its 8 pin links to each other with 12 pin, and passes through C ₃₀₃Ground connection, its 9 pin links to each other with CD4053 (N304), its 10 pin and CD4053 (N ₃₀₃) join its 13 pin and R ₃₀₇, R ₃₀₈Link to each other, its 14 pin links to each other with CPU4, CD4053 (N ₃₀₃) 2,6,7,8 pin ground connection, the R among its 4 pin and Fig. 2 ₁₀₅Link to each other the R among its 5 pin and Fig. 2 ₁₀₃, R ₁₀₈Link to each other, its 9 pin links to each other with CD4069, and its 10 pin links to each other with NE556, its 15 pin and CD4053 (N ₃₀₄) link to each other its 16 pin and CPU4, R ₃₁₉, CD4053 (N ₃₀₄), R ₃₁₅Link to each other CD4053 (N ₃₀₄) 1 pin and R ₃₁₅, N ₃₁₈Link to each other, its 2 pin links to each other with 14 pin, and its 3 pin links to each other with CD4069, NE556, and its 4 pin links to each other with NE556, and its 5 pin links to each other with CPU4, and its 6 pin links to each other with 8 pin, its 7 pin ground connection, its 9 pin and CD4053 (N ₃₀₃) link to each other, and pass through C ₃₀₈Ground connection, its 10 pin links to each other with CPU4, its 11 pin and R ₃₁₈Link to each other, and pass through C ₃₀₈Ground connection, the R among its 12 pin and Fig. 3 ₂₂₆, triode V ₂₀₃Emitter link to each other, also and C ₃₀₉Link to each other its 13 pin and R ₃₁₇, R ₃₁₉, R ₃₁₆Link to each other its 15 pin and triode V ₃₀₂Base stage link to each other its 16 pin and R ₃₁₅, R ₃₁₈, N ₃₀₃Link to each other.

3. it is characterized in that as the said computer-shape television repeater of claim 1 that power supply adopts switching power supply, it mainly contains SG3524 Switching Power Supply oscillator, transformer T ₄₀₁, T ₄₀₂Form with several diodes, Resistor-Capacitor Unit and triode, wherein 1 pin and the R of SG3542 ₄₀₅, R ₄₀₆Link to each other its 2 pin and R ₄₀₇Link to each other, and pass through R ₄₁₁Link to each other with 16 pin, and and source jack-socket 1, N ₄₀₂Link to each other its 4 pin and transformer T ₄₀₁Pay end and link to each other, 5,8 pin ground connection, its 6 pin passes through R ₄₀₈Ground connection, its 7 pin links to each other with 6 pin, and passes through C ₄₀₃Ground connection, its 9 pin passes through R ₄₀₉, C ₄₀₄Ground connection, its 10 pin and triode V ₄₀₇Collector electrode, R ₄₁₂Link to each other, its 11 pin and 14 pin ground connection, its 13,12 pin passes through resistance R ₄₁₀With triode V ₄₀₅Base stage join, its 15 pin passes through resistance R ₄₀₂, diode V ₄₀₁With transformer T ₄₀₁The end of paying link to each other, its 16 pin is by diode V ₄₀₈, R ₄₀₃With transformer T ₄₀₁The end of paying link to each other.

4. it is characterized in that as the said computer-shape television repeater of claim 1, adopted AGC, AFC circuit.

5. it is characterized in that as the said computer-shape television repeater of claim 1, with tuner 1, in put element circuit 2, modulator 3, CPU4, control circuit 5 and accomplish on the wiring board, power supply 6 is made a wiring board, two wiring boards all are fixed on the substrate of shell, and build loam cake and front panel.

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