CN2168370Y

CN2168370Y - Automactic telecontrollor for steering antenna of television

Info

Publication number: CN2168370Y
Application number: CN93203333U
Authority: CN
Inventors: 朱宏升
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-20
Filing date: 1993-02-20
Publication date: 1994-06-08
Anticipated expiration: 2003-02-20

Abstract

The utility model relates to an apparatus changing the pointing direction of an antenna, the antenna position can be automatically adjusted to the optimal position when television channels are altered. The utility model comprises an antenna steering machine and a tele-controller, the steering machine has a potentiometer synchronously steering with an antenna steering mechanism, the antenna position electric voltage is outputted, the channel characteristic signals BU, BS, Uil of a television tuner are edited into the RAM address by the tele-controller, the antenna position electric voltage are converted into data through the analog-to-digital conversion, when the RAM is in a writing state, the data of the optimal antenna position of each channel are written into the corresponding address unit in the RAM, when the RAM is in a reading state, the data of the corresponding address unit of each channel in the RAM control the antenna steer to the optimal position.

Description

Automactic telecontrollor for steering antenna of television

The utility model relates to a kind of device that changes antenna direction, relates to the automatic remote control finder of television set reception antenna or rather.

Trouble when solving artificial adjustment exterior aerial, and designed the automatic position controlled rotary antenna of television set.Position controlled rotary antenna is generally constituted by the mechanical reduction gear antenna of motor, motor and the rotating mechanism of antenna thereof, when antenna turns to, need the manual operation pole changer, connect the electric electromechanics source circuit, rotate through deceleration rear drive antenna, therefore the receiving channels of a television set of every change all will use still sense inconvenience according to image definition open and close pole changer.

The purpose of this utility model is for the automatic position controlled rotary antenna of existing television set designs the automatic remote controller of a kind of television set position controlled rotary antenna, makes when changing the television set receiving channels to make antenna forward visual optimum position to automatically.

Automatic remote controller of the present utility model can store the optimal antenna position data of each receiving channels, and therefore when selecting a certain channel, antenna can automatically forward on the optimum position of this channel according to these data.

Television set position controlled rotary antenna automatic remote-control device of the present utility model comprises that antenna steering box and control steering box go to the remote controller of optimum position automatically with receiving channels, is characterized in that:

1) be provided with potentiometer in the described steering box, potentiometer shaft is by gear train and the engagement of steering box motor shaft, and potentiometer connects reference voltage, moving contact output aerial position voltage U i2;

2) described remote controller comprises the RAM that stores each channel optimal antenna position data, to television set frequency band signals BU, BV, BS encodes and generates the encoder of RAM high address, receive television set varactor tuner tuning voltage Ui1, generate an A/D converter of RAM low order address, the read/write controller of RAM, the aerial position voltage U i2 of described potentiometer moving contact output is become the 2nd A/D converter of data-signal, the D/A converter, with the 2nd A/D converter, the data/address bus that the data terminal of RAM and D/A converter connects compares the output control antenna to D/A converter output voltage U A2 and aerial position voltage U i2 and turns to and open, the comparison driver that stall is moving.

When selecting a certain receiving channels, the tracking addressing circuit calculated address signal that television set tuning voltage Ui1 and frequency band signals BU, BV, BS form via an A/D converter and encoder is determined a memory cell in RAM.When the read/write controller is controlled to be when writing state, Artificial Control driven antenna steering box makes and stops at the optimum position, potentiometer on it also rotates synchronously and obtains aerial position voltage U i2, changes data-signal into through the 2nd A/D converter and deposits in the memory cell selected among the RAM.Can carry out the storage of antenna optimum position data to all television reception channels by the said process operation.When the read/write controller is controlled to be read states, still generate and channel corresponding address signal by following the tracks of the addressing circuit, RAM send D/A converter with the data in this address location, be converted to aanalogvoltage UA2, relatively driver compares UA2 and aerial position voltage Vi2, the driven antenna steering box turns to when more inconsistent, stops when relatively more consistent, and antenna is remained on the optimum position with channel change automatically.

The work that writes antenna optimum position data to RAM only need be carried out once, and then remote controller promptly is in the state of reading, and on the RAM sheet power-down protection apparatus is arranged.

Describe technology of the present utility model in detail below in conjunction with the embodiment accompanying drawing

Accompanying drawing 1 is a television set position controlled rotary antenna automatic remote-control device frame principle figure;

Accompanying drawing 2 is a television set position controlled rotary antenna automatic remote-control device logic sketch;

Accompanying drawing 3 is RAM shown in Figure 2 and follows the tracks of addressing circuit electrical schematic diagram;

Accompanying drawing 4 is a clock circuit electrical schematic diagram shown in Figure 2;

Accompanying drawing 5 is the 2nd A/D converter shown in Figure 2, D/A converter and comparison drive circuit electrical schematic diagram.

Referring to accompanying drawing 1, encoder 1 receives the high address that television set Frequency Band Selection signal generates RAM2, and the television set frequency band signals comprises BU, BV, BS, and present embodiment is only got BU and BS, when BU, BS are " 0 ", promptly represents the BV frequency range.

The one A/D converter 3 is converted to data-signal with television tuner tuning voltage Ui1 and generates low order address, BU, BS and Ui1 are referred to as the channels feature signal of tuner, and promptly the tracking addressing circuit of being made up of an encoder 1 and an A/D converter 3 is the address of random memory with the channels feature conversion of signals.4 is address bus among the figure.5 is the read/write controller of RAM, 7 is exterior aerial, 6 is the antenna steering box, 8 is the potentiometer that rotates synchronously with the antenna steering box, 9 is the 2nd A/D converter, is used for changing the aerial position voltage U i2 of potentiometer 8 into data-signal, and 10 is the D/A converter, with the aerial position data shift signal of the 2nd A/D converter 9 outputs is analog voltage signal UA2, is analog voltage signal UA2 with the antenna optimum position data shift signal that stores in the unit, RAM2 address perhaps.Relatively driver 11 compares UA2 and Ui2, and driven antenna steering box 6 rotated and stops when UA2=Ui2 when both were inconsistent, and antenna is in the optimum azimuth position, and 12 is data/address bus among the figure.

Referring to accompanying drawing 2, K1a, K1b, K1c, K1d are four blade two throw switches and or door 51 function of finishing read/write controller 5 together among the figure.K1 puts when writing (W) state, and K1a makes the cr=0 of counter 93, allows counter 93 work; K1b makes RAM2's =1 is in and writes enable state; K1c makes the choosing of RAM2 sheet

Connect or door 51 outputs; K1d disconnects comparator 111 and driver 112, makes driving 112 be in manual state.

Among the figure+V ,-V is a power supply ,+VR ,-VR is ± the 4.7V reference power supply that potentiometer W2, W3 form encoder 1, make the Frequency Band Selection output of 0-30V reduce to the 0-4.7V(logical one), A6, the A7 bit address of formation RAM2.

Transport and placing device IC1a, R1, R3, R4 constitute inverting amplifier, regulate W1 tuning voltage Ui1 is dropped to the 0-4.2V input inverter, and the effect of R2 is to reduce output voltage to be about-0.5--4.7V with the output voltage range that adapts to two limit comparison circuits 302,301.

Inverter 301, two limit comparison circuit 302, counter 303, D/A converter 304, logic gates 305, not gate 306 and constitute an A/D converter 3 with door 307 changes Ui1 into low 6 A0-A5 addresses of RAM2.

Two limit comparison circuits 91, to constitute the 2nd A/D converter 9,10 with door 92, counter 93 be the D/A converter, and 13 is clock circuit, and voltage comparator 111 and driver 112 constituent ratios are than driver 11.

When K1a-K1d beats in the W position, cooperate channel selection manual adjustment antenna 7 in the optimum position, the 2nd A/D converter 9 that Ui2 forms via two limit comparison circuits 91, with door 92, counter 93 changes 6 bit data D0-D5 into, its course of work is with aforementioned tracking addressing circuit, and 6 bit data are converted to change through D/A converter 10 again intends voltage U A2.

Above-mentioned two kinds convert after, two limit comparison circuits 302 are " O " with output A1, the A2 of two limit comparison circuits 91, make or door 51 is output as 0, RAM's

=0, the aerial position data write the appointment Dan Wuzhong of RAM2.

K1 puts when reading (R) state, and K1a makes the cr=1 of counter 93, please zero and stop counting; K1b makes RAM2

=0,

=1 is in and reads effective status; K1c makes RAM2CE meet two limit comparison circuit 302 output A1; K1d connects comparator 111 and driver 112.

When selected certain channel, television set Ui1, BU, BS are through following the tracks of the addressing circuit, it is 8 bit address that an A/D converter 301-307 compiles, this moment two limit comparison circuits 302 output A1=0, i.e. RAM2 =0, the sheet choosing is effective, from the corresponding address unit sense data D0-D5 of RAM, be converted to aanalogvoltage UA2 and aerial position voltage U i2 comparison in comparator 111 by D/A converter 10, driver 112 driven antenna turn to during UA2 ≠ Ui2, stop up to UA2=Ui2, and it is best to reach image.

Referring to accompanying drawing 3, it is tracking addressing circuit (1 shown in Figure 2,3) and the enforcement circuit diagram of RAM2, two limit comparison circuits 302 are by transport and placing device ICIC, the voltage comparator that IC1d is connected into constitutes, B1, C1 is input, A1 is output, the feature of two limit comparison circuits is by transport and placing device ICIC, IC1d, the forward conduction attitude of the diode D3 dividing potential drop of connecting with resistance (0.5V--4.7V) is divided into two limits to the tuning voltage Ui1 ' after inverter 301 is anti-phase, be about to Ui1 ' and Ui1 '+0.15 as two limit values, compare with the output voltage U A1 of D/A converter 304, when UA1 falls into Ui1 '-(Ui1 '+0.5) (in the scope v) the time, two limit comparison circuits 302 are output as " 0 ", otherwise are output as 1.

Transport and placing device IC1b, power resistance R 12-R17 and electronic switch IC2, IC3 constitute D/A converter 304, and output voltage U A1 scope is 0--4.7v.

Logic gates 305 comprises and door IC5a-IC5d, an IC6a, IC6b that its effect is to prevent to write the status scan address and obliterated data, has only when converting A1 and be 0, and the data Q1-Q6 of counter 303 just can send the address end of RAM2.

E ' is the standby of RAM2 among the figure.

Ui1 gives two limit comparison circuits 302 through inverter 301, with the UA1 of D/A converter 304 outputs relatively, UA1 is A1=1 then in two limits not, through not gate 306 anti-phase sealing logic gates 305, open simultaneously and door 307, clock CP is to counter 303 countings, and UA1 reduces (bearing) gradually; In limited time two when entering, A1=0, sealing 307 stops counting, opens closing door 305 by 306 simultaneously, send RAM2 the A0-A5 data, owing to adopt two limit comparison circuits, so can be from motion tracking channels feature signal.

Referring to accompanying drawing 4, clock circuit 13 is connected into astable multivibrator by 555 time-base circuits, and the clock signal of about 300KHZ is provided for

counter

303 and 93.

Referring to accompanying drawing 5, be the 2nd A/D converter 9 shown in Figure 2, D/A converter 10 and the enforcement circuit that compares driver 111,112.

Two limit comparison circuits 91 are made of the voltage comparator that transport and placing device Ic12c, Ic12d are connected into, B2, C2 are input, and A2 is output, and its feature is with two limit comparison circuits 302, aerial position voltage U i2(0--4.7V) be divided into two limits, be about to Ui2 and reach (Ui2+0.15) (v) as two limit values.

Constitute the 2nd A/D converter 9 with door 92, counter 93, two limit comparison circuit 91.By electronic switch Ic9, Ic10, the D/A converter 10 that power resistance R 25-R30 and transport and placing device Ic12b form, output UA2 scope 0--4.7V.92 is the clock closing door of counter 93, when UA2 falls into Ui2-Ui2+0.15(V) scope in the time, two limit comparison circuits 91 output A2=0, otherwise A2=1, sealing 92 during A2=0.

6 is steering box among the figure, drives potentiometer 8(W4 by motor through the gear ratio of 3:4) moving contact rotate output aerial position voltage U i2.

Comparison circuit 11 is made of transport and placing device Ic12a, R38-R42, Ui2 and UA2 compared, and output positive voltage 1 when Ui2＞UA2, the output negative voltage is output as 0 during Ui2=UA2 when Ui2＜UA2.

Drive circuit 112 is made up of BG1, BG2 relay J 1, J2, diode D13, D14 and hand switch K2, K3, and as Ui2＞UA2, during comparison circuit 111 output positive voltages, BG1 conducting J1 adhesive drives steering box and rotates to the direction that Ui2 reduces; When Ui2＜when UA2 comparison circuit 111 was exported negative voltages, BG2 conducting J2 adhesive drove steering box and rotates to the direction that Ui2 increases, and Ui2=UA2 is stopped operating.

Only need press K switch 2 or K3 during manual adjustment antenna steering box and can make J1 or J2 adhesive, the control steering box clockwise or rotate counterclockwise.

The model of transport and placing device is LM324 among Fig. 4,5, and the model of counter is 4040, and the electronic switch model is CD4066, with the door model be CD4081, the RAM model is 6116, or the door model be CD4071, the not gate model is CD4069.

Remote controller of the present utility model makes the antenna steering box automatically adjust to the optimum position with receiving channels, and is time saving and energy saving, effective easy to use, in the rural area certain application value arranged especially, and giving televiews offers convenience.

Claims

1, a kind of television set position controlled rotary antenna automatic remote-control device comprises that antenna steering box and control steering box go to the remote controller of optimum position automatically with receiving channels, is characterized in that:

2, television set position controlled rotary antenna automatic remote-control device according to claim 1 is characterized in that described encoder is the potentiometer that two termination television set BU, BS signal, other end ground connection, moving contacts meet RAM high address A6, A7.

3, television set position controlled rotary antenna automatic remote-control device according to claim 1, it is characterized in that a described A/D converter is by inverter, two limit comparison circuits, the D/A converter, not gate, logic gates, counter is formed, the inverter input meets television set tuning voltage Ui1, output connects two limit comparison circuit one ends, the output of D/A converter connects two limit comparison circuit other ends, two limit comparison circuit outputs connect respectively inverter and and Men Yiduan, inverter output connects the logic gates blind end, with another input termination clock of door, connect the counter clock end with door output, counter output connects D/A converter and logic gates input, and logic gates output connects described address ram A0-A5 end.

4, television set position controlled rotary antenna automatic remote-control device according to claim 1, it is characterized in that described the 2nd A/D converter is by two limit comparison circuits, with door, counter is formed, and two limit comparison circuit one end inputs meet aerial position voltage U i1, and other end input meets described D/A converter output UA2, two limit comparison circuit outputs connect with Men Yiduan to be imported, connect clock with the input of the door other end, connect the counter clock end with door output, counter output connects the input of D/A converter.

5, television set position controlled rotary antenna automatic remote-control device according to claim 3, it is characterized in that described pair of limit comparison circuit is by the double operational device, resistance, diode connects and composes, two input B are arranged, C, an output terminals A, the B end connects first transport and placing device (+) by resistance and holds and connect the diode negative terminal, the diode anode connects (-) end and the earth terminal of second transport and placing device respectively by resistance, the C end connects first transport and placing device (-) respectively by resistance and holds and connect second transport and placing device (+) end, the A end also connects two diode negative terminals, and two diode anodes connect first respectively, the second transport and placing device output.