CN2372850Y - Composite picture signal generator for multi-media display receiver - Google Patents
Composite picture signal generator for multi-media display receiver Download PDFInfo
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- CN2372850Y CN2372850Y CN 98248156 CN98248156U CN2372850Y CN 2372850 Y CN2372850 Y CN 2372850Y CN 98248156 CN98248156 CN 98248156 CN 98248156 U CN98248156 U CN 98248156U CN 2372850 Y CN2372850 Y CN 2372850Y
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Abstract
The utility model relates to a composite video playing device for a multi-media display receiver. The RGB signals of a television are directly input into an RGB signal switcher of a television and a computer, and the RGB signals of a computer are transferred to the RGB signal switcher of a television and a computer after being processed by an RGB signal processor of a computer. The RGB signals output by the signal switcher of a television and a computer are respectively connected with a high-gain wide-band video amplifying circuit to drive an electron gun. When the utility model works under the state of a television, the pictures displayed are more refined, and the image quality is obviously improved compared with the conventional color television sets. When the utility model works under the state of a computer display, the utility model displays clear texts without flicker.
Description
The utility model belongs to the video amplifying device that shows receiving system, is specifically related to select the complex video frequency amplify device of computer video or television video.
Before the utility model was made, the video amplifier circuit of general color television receiver because television video frequency signal is narrow, adopted common-emitter amplifier mostly, and the element that is adopted can only satisfy narrow-band and amplify requirement.And the employing of the video amplifier circuit of computer dedicated display is to send out altogether--common-base circuit has solved the narrow problem of the big circuit passband of common granting; But in the time of will be as the video amplifier circuit of TV signal, expose again because of shortcomings such as the not high brightness of gain are low.Update along with household electrical appliances, digital technology is applied to domestic electronic, electrical equipment more and more widely, computer also more and more comes how to enter family, people begin to expect that television set and computer have darker combining, especially their terminal display part can unite two into one, promptly so-called multimedia TV set.This one of them outstanding technological difficulties realize the compatibility of video amplifier circuit exactly, and the video that can finish TV signal amplifies, and the video that also can finish the computer's RGB signal amplifies.
For addressing the above problem, the utility model provides a kind of composite video amplifying device that can adapt to TV and computer video signal.
The utility model is achieved in that a kind of multimedia display receiver complex video frequency amplify device, the peripheral circuit that the rgb signal switch of TV and computer adopts special three-way road analog switch integrated chip NE03 and sets each other off, the rgb signal of TV is directly inputted to the rgb signal switch of TV and computer through build-out resistor, build-out resistor is all passed through on each road of the rgb signal of computer, capacitance, on draw limiter protection circuit, from three input channels, send the computer's RGB processor to, this computer's RGB signal is that special-purpose broadband triple road video amplifies integrated chip NR02 and correspondent peripheral circuit thereof; The computer's RGB signal after each road makes the computer's RGB signal level of different frequency keep injustice substantially through hooping position circuit again, sends the rgb signal switch of TV and computer through after the above-mentioned processor processing to; R, G, the B signal of the rgb signal switch output of TV and computer are connected the high-gain broadband video amplifier circuit respectively, through three electron guns of this processing of circuit rear drive.
Described demonstration receiver complex video frequency amplify device, the high-gain broadband video amplifier circuit is three groups of its cobasis amplifying circuits, and the R of output, G, B signal each have one group of amplifying circuit, and it is identical that each organizes amplification circuit structure, with the R signal is example, and all the other each groups are identical with it; The R signal of output is added to the base stage of triode V902, this triode and other two groups corresponding triode V904 and V906 common emitter simultaneously, through amplifying back triode V902 collector electrode output, receive the emitter of triode V901, this triode and other corresponding two triode V903, the V905 common base, through the collector electrode output of wideband amplification by triode V901, process is by resistance R 907, resistance R 908 and inductance L 902, the loop that inductance L 901 is in turn connected to form forms typical high pass network and by resistance R 919, inductance L 903 low-pass networks that form in parallel, the R electron gun of driving CET.
Described demonstration receiver complex video frequency amplify device, it is characterized in that: the rgb signal of computer is the identical build-out resistor of syndeton respectively, capacitance and on draw the limit same protective circuit, wherein one tunnel concrete structure is for after the R signal input, be connected to the R input of computer's RGB signal processor by capacitor C R01 and resistance R R04, the R signal is also by resistance R R01 ground connection; The R input of computer's RGB signal processor is also by diode VDR02 ground connection, perhaps by diode VDR01 and capacitor C R04 ground connection.
Described multimedia display is received the complex video frequency amplify device of meeting sb. at the airport, it is characterized in that: three outputs of computer's RGB signal processor are the identical hooping position circuit of syndeton respectively, wherein one tunnel concrete structure is the loop of R output by being formed by voltage stabilizing didoe VDR12 and capacitor C R22, connect input through resistance R R39 again, the R input is simultaneously by resistance R R37 ground connection.
Advantage of the present utility model and good effect are that this complex video frequency amplify device is under tv state, because through making display frame fine and smooth more after the amplification of high-gain broadband video, the more conventional color television set of the quality of image is significantly increased; Under the computer display state, because computer R, G, B, signal amplifies chip through special-purpose broadband triple road video to be handled, and after selecting, makes display text clear, the flicker free sense, than professional display, image brightness is higher, stereovision is stronger.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
Embodiment:
The utility model mainly is applicable to the video processing and amplifying of TV and computer display all-in-one; Can be made into wiring board uses also and can other forms use.The main inventive point of the utility model is at circuit part.A kind of as shown in Figure 1 multimedia display receiver of its principle complex video frequency amplify device, the peripheral circuit that the rgb signal switch of TV and computer adopts special three-way road analog switch integrated chip NE03 and sets each other off, the rgb signal of TV is directly inputted to the rgb signal switch of TV and computer through build-out resistor, build-out resistor is all passed through on each road of the rgb signal of computer, capacitance, on draw limiter protection circuit, from three input channels, send the computer's RGB processor to, this computer's RGB signal is that special-purpose broadband triple road video amplifies integrated chip NR02 and correspondent peripheral circuit thereof; The computer's RGB signal after each road makes the computer's RGB signal level of different frequency keep injustice substantially through hooping position circuit again, sends the rgb signal switch of TV and computer through after the above-mentioned processor processing to; R, G, the B signal of the rgb signal switch output of TV and computer are connected the high-gain broadband video amplifier circuit respectively, through three electron guns of this processing of circuit rear drive.Present embodiment NE03 adopts AN25667P, and NR02 adopts M52327SP remaining part model to see attached list.Present embodiment detailed circuit and peripheral circuits are as shown in Figure 2.Described demonstration receiver complex video frequency amplify device, the high-gain broadband video amplifier circuit is three groups of its cobasis amplifying circuits, the R of output, G, the B signal each has one group of amplifying circuit, it is identical that each organizes amplification circuit structure, with the R signal is example, all the other each groups are identical with it, the R signal of output is added to the base stage of triode V902, this triode and other two groups corresponding triode V904 and V906 common emitter simultaneously, through amplifying back triode V902 collector electrode output, receive the emitter of triode V901, this triode and other corresponding two triode V903, the V905 common base, through the collector electrode output of wideband amplification by triode V907, through by resistance R 907, resistance R 908 and inductance L 902, the loop that inductance L 901 is in turn connected to form forms typical high pass network and by resistance R 919, inductance L 903 low-pass networks that form in parallel, the R electron gun of driving CET.
Described demonstration receiver complex video frequency amplify device, the rgb signal of computer is the identical build-out resistor of syndeton respectively, capacitance and on draw the limit same protective circuit, wherein one tunnel concrete structure is for after the R signal input, be connected to the R input of computer's RGB signal processor by capacitor C R01 and resistance R R04, the R signal is also by resistance R R01 ground connection; The R input of computer's RGB signal processor is also by diode VDR02 ground connection, perhaps by diode VDR01 and capacitor C R04 ground connection.
During present embodiment work, the rgb signal of TV is provided by external circuit, and through 11,12,13 pin of build-out resistor RR41, RR42, RR43 input NR03, the rgb signal of PC is given 1,2,3 pin of NR03 after treatment.For rgb signal level and the TV signal that makes input NR03 is consistent, this circuit carries out level conversion to the signal from wide-video amplifier NR02 output, is transformed into 3.4 volts by 4.2 shapes.With a road in three road signals is example, by capacitance CR23, and voltage stabilizing didoe VDR12, current-limiting resistance RR37 and pull-up resistor RR38 form.Other two-way is identical therewith.The diverter switch signal is provided by external circuit CPU, after RR40, RR45 dividing potential drop, deliver to 4 pin of NR03, when switching signal is 8.3 volts of high level, choose the TV signal, during 1.4 volts of low levels earlier in the PC signal, selected rgb signal is exported by 5,6,8 pin, delivers to video amplifier circuit.
Inserting the rgb signal treatment circuit of PC by the rgb signal of PC main frame output, is example with one road R signalling channel wherein, and other two-way G is identical with it with the B passage.
The R signal is at first through build-out resistor RR01, capacitance VR01, the effect of RR01 is to make the input impedance matching of analog interface rgb video input at 75 Ω, through CR01 isolated DC composition, the R signal is sent into 2 pin of NR02,2 pin static direct current working points are located at 2.8 volts; Two switching diode VDR01, VDR02 respectively with+12V, GND join, and 2 pin level are limited in the 0-12 volt scope, prevent to disturb to damage NR02 because of the burst spike.
Contain composite synchronizing signal in the G signal at the output of some computers, this circuit specialized designs corresponding circuit to have enlarged compatibility of the present utility model.VR01 and RR07, RR08, RR09 form separate rows, field synchronization drive circuit, and the synchronizing signal in the G signal is delivered on row, the control board through this circuit and separated, thereby have guaranteed also to have when the combined type rgb signal is imported row, a control signal output.
Being added to the base stage of triode 2SC1815 by RGB three road signals of NR03 output, is example with one road R signal.V904 (2SC1815) inserts for common emitter, and signal is received the emitter of V903 (2SC3619) by collector electrode after amplifying, and V903 is that common base inserts, and signal amplifies by collector electrode output through wideband, is coupled to CRT negative electrode R rifle through filtering.In first order amplifying return circuit, bright, the dark balance that adopts R954, R952 to regulate the R signal respectively, diode D902 protection V904 avoids reverse breakdown.R920, R921, L904, L905 form high pass network, and L906, R925 form low-pass network, and the rgb signal of TV and PC obtains different frequency gain compensation respectively, to drive the CRT negative electrode.
L911 is single magnetic bead, and V903 avoids electrostatic interference in order to the protection high power valve.
This circuit adopts five little position adjusters to regulate the white balance of RGB three road signals, be specially: RPR51 regulates green signal excitation G-DRIVE, RR52 and regulates blue signal excitation B-DRIVE, more than two potentiometers regulate bright balance R signal excitation to meet 12V through RR10, RR15 be fixed level, do not participate in adjusting; RPR53 regulates green signal biasing G-BIAS; RPR54 regulates blue signal biasing B-BIAS, and RPR55 regulates red signal biasing R-BIAS, more than three potentiometers regulate dark balance.With one road R-BIAS wherein is example, and RR46, RR47 are respectively upper limit resistance and lower limit resistance, plays metering function, prevents that potentiometer is transferred to an end and causes the excessive damage of curtage NR02.CE32 is a filter capacitor, the brightness control signal of this circuit is provided by from outside, through RR14, RR17, RR29 level adjustment and CR15 filtering, send into 15 pin of NR02, the brightness of three kinds of signals of control, the contrast control signal of this circuit is carried out line traffic control adjustment direct voltage by CPU and is finished by the external circuit confession.
This circuit is introduced horizontal synchronizing pulse as clamp pulse; through RR27; link 14 pin of NR02; when PC is not worked or display when not connecting main frame, no lock-out pulse input, clamp circuit is not worked; three clamping capacitance CR18, CR20, CR22 fill and do not power on; the CRT grating extinguishes, and does not have any demonstration, not only can protect CET but also can prevent that X ray from producing.
This circuit also is provided with blank screen SCREEN-BLANKING control circuit, the blank screen control signal is imported through RR24 by external circuit, anti-phase through VR04, deliver to the VR05 base stage, VR05 is a PNP pipe, when control signal is high level, the VR05 base stage is a low level, the VR05 conducting, current collection is high level very, is added to the base stage of each high power valve V904, V905, V906, make its operate as normal, when control signal was low level, VR05 ended, and V904, V905, V906 base stage are that low level is not worked, so CRT negative electrode no signal, screen does not work.Shutdown bright-spot eliminating function is also finished by VR05: 12V disappears during shutdown, makes VR05 end, and signal can not be delivered to the CRT negative electrode by V904, V905, V906, avoids center Screen bright spot to occur.
Its minute of the present utility model, auxiliary circuit had:
Service switch S901, switch is put left end during operate as normal, and when switch pulled out to right-hand member ,+12V voltage was passed to external circuit through RR80 by PR04.Capable circuit is not worked, occur a horizontal brightness in the middle of the screen, be service mode.
Impact for the protection CRT spike of avoiding happening suddenly, all have an electric discharge device to discharge over the ground at each pin of CRT base.
Subordinate list sequence number item title model/value
| 001 | R905 R918 R930 | Fixed carbon resister | RT13-1/6W-12-J |
| 002 | RR45 | Fixed carbon resister | RT13-1/6W-33-J |
| 003 | R917 R966 RR09 | Fixed carbon resister | RT13-1/6W-47-J |
| 004 | RR01 RR02 RR03 | Fixed carbon resister | RT13-1/6W-75-J |
| 005 | R904 | Fixed carbon resister | RT13-1/6W-91-J |
| 006 | R901 R914 R928 RR04 RR05 RR06 RR14 RR30 RR33 RR36 RR39 RR41 RR42 RR43 | Fixed carbon resister | RT13-1/6W-100-J |
| 007 | RR44 | Fixed carbon resister | RT13-1/6W-330-J |
| 008 | R903 R916 R932 | Fixed carbon resister | RT13-1/6W-430-J |
| 009 | RR26 | Fixed carbon resister | RT13-1/6W-560-J |
| 010 | RR31 RR34 RR37 RR40 | Fixed carbon resister | RT13-1/6W-680-J |
| 011 | R907 R920 R934 RR07 RR10 RR11 RR12 RR27 | Fixed carbon resister | RT13-1/6W-1k-J |
| 012 | RR08 RR24 RR25 | Fixed carbon resister | RT13-1/6W-2k2-J |
| 013 | RR32 RR35 RR38 | Fixed carbon resister | RT13-1/6W-3k3-J |
| 014 | R908 R921 R935 | Fixed carbon resister | RT13-1/6W-3k9-J |
| 015 | RR19 RR22 | Fixed carbon resister | RT13-1/6W-4k3-J |
| 016 | R912 R925 R939 RR16 RR47 RR49 RR61 | Fixed carbon resister | RT13-1/6W-6k8-J |
| 017 | RR18 RR21 | Fixed carbon resister | RT13-1/6W-7k5-J |
| 018 | RR46 RR48 RR60 | Fixed carbon resister | RT13-1/6W-8k2-J |
| 019 | RR15 | Fixed carbon resister | RT13-1/6W-9k1-J |
| 020 | RR29 | Fixed carbon resister | RT13-1/6W-10k-J |
| 021 | RR20 | Fixed carbon resister | RT13-1/6W-11k-J |
| 022 | RR80 | Fixed carbon resister | RT13-1/6W-53k-J |
| 023 | RR23 RR28 | Fixed carbon resister | RT13-1/6W-56k-J |
| 024 | R902 R915 R929 | Fixed carbon resister | RT13-1/6W-750k-J |
| 025 | RR13 | Metalfilmresistor | RJ23-1/6W-2k7-F |
| 026 | RR17 | Metalfilmresistor | RJ23-1/6W-82k-F |
| 027 | R927 R970 | Metal oxidation resistance | RY25-1/2W-1k-J |
| 028 | R909 R910 R911 R922 R923 R924 R936 R937 R938 | Metal oxidation resistance | RY27--2W-15k-J |
| 029 | R913 R926 R940 | Real core resistance | RS11-1/2W--820R-K |
| 030 | R963 | Fusing resistor | RF10--1W-3R3-J |
| 031 | R954 R955 | Half adjustable potentiometer | W106-1-2-200a |
| 032 | R951 R952 R953 | Half adjustable potentiometer | W106-1-2-2kc |
| 033 | RR51 RR52 RR53 RR54 RR55 | Half adjustable potentiometer | W106-1-2-5kb |
| 034 | C904 | The high Jie's ceramic disc capacitor of low pressure | CC1-SL-50V-470-J |
| 035 | C902 C906 | The high Jie's ceramic disc capacitor of low pressure | CT1-2B4-50V-680-K |
| 036 | C911 | The high Jie's ceramic disc capacitor of high pressure | CT81-1kV-2D4-1000p-k |
| 037 | C913 | The high Jie's ceramic disc capacitor of high pressure | CT81-2kV-2D4-1000p-k |
| 038 | CR13 | Compound film capacitor | CH11-50V-0.01u-J |
| 039 | C901 C903 C905 CR06 CR07 CR08 CR09 CR10 CR11 CR12 CR15 CR16 CR24 CR25 CR30 CR31 | The metallized polyester capacitor | CL21X-50V-0.1u-J |
| 040 | C908 CR18 CR20 CR22 CR26 | Electrolytic capacitor | CD263-16V-10u-M |
| 041 | CR04 | Electrolytic capacitor | CD263-16V-33u-M |
| 042 | CR01 CR02 CR03 CR19 CR21 CR23 CR32 | Electrolytic capacitor | CD263-16V-47u-M |
| 043 | CR05 CR17 | Electrolytic capacitor | CD263-16V-100u-M |
| 044 | CR14 | Electrolytic capacitor | CD263-16V-220u-M |
| 045 | C907 | Electrolytic capacitor | CD263-50V-2.2u-M |
| 046 | C912 | Electrolytic capacitor | CD263-250V-47u-M |
| 047 | L901 L904 L907 | Inductance coil | LGA0204-15uH-K |
| 048 | L903 L906 L909 | Inductance coil | LGA0204-22uH-K |
| 049 | L905 | Inductance coil | LGA0204-68uH-K |
| 050 | L902 L908 LR01 LR02 | Inductance coil | LGA0204-100uH-K |
| 051 | L910 L911 L912 | Magnetic bead | LCXR213 |
| 052 | VD901 VD902 VD903 VDR01 VDR02 VDR03 VDR04 VDR05 VDR06 VDR07 VDR10 VDR15 VDR16 | Switching diode | 1N4148 |
| 053 | VDR14 VDR15 | Switching diode | 1SS133 |
| 054 | VDR11 VDR12 VDR13 | Voltage stabilizing didoe | Voltage stabilizing value 5.1V |
| 055 | VDR08 | Voltage stabilizing didoe | Voltage stabilizing value 10V |
| 056 | VDR09 | Voltage stabilizing didoe | Voltage stabilizing value 3.0V |
| 057 | VR05 VR06 | Triode | 2SA1015 |
| 058 | V902 V904 V906 VR01 VR04 | Triode | 2SC1815 |
| 059 | VR07 | Triode | RN1203 |
| 060 | V901 V903 V905 | Triode | 2SC3619 |
| 061 | S901 | Service switch | 1 pair 3 toggle switch |
| 062 | NR02 | Integrated circuit | M52327SP |
| 063 | NR03 | Integrated circuit | AN5862 |
Claims (4)
1, a kind of multimedia display receiver complex video frequency amplify device, it is characterized in that: the peripheral circuit that the rgb signal switch of TV and computer adopts special three-way road analog switch integrated chip (NE03) and sets each other off, the rgb signal of TV is directly inputted to the rgb signal switch of TV and computer through build-out resistor, build-out resistor is all passed through on each road of the rgb signal of computer, capacitance, on draw limiter protection circuit, from three input channels, send the computer's RGB processor to, this computer's RGB signal is that special-purpose broadband triple road video amplifies integrated chip (NR02) and correspondent peripheral circuit thereof; The computer's RGB signal after each road makes the computer's RGB signal level of different frequency keep injustice substantially through hooping position circuit again, sends the rgb signal switch of TV and computer through after the above-mentioned processor processing to; R, G, the B signal of the rgb signal switch output of TV and computer are connected the high-gain broadband video amplifier circuit respectively, through three electron guns of this processing of circuit rear drive.
2, demonstration receiver complex video frequency amplify device according to claim 1, it is characterized in that: the high-gain broadband video amplifier circuit is three groups of its cobasis amplifying circuits, R, G, the B signal of output each have one group of amplifying circuit, it is identical that each organizes amplification circuit structure, with the R signal is example, and all the other each groups are identical with it; The R signal of output is added to the base stage of triode (V902), two groups of corresponding triodes of this triode and other (V904 and V906) common emitter simultaneously, through amplifying back triode (V902) collector electrode output, receive the emitter of triode (V901), this triode and other corresponding two triode (V903, V905) common base, through the collector electrode output of wideband amplification by triode (V901), process is by resistance (R907), resistance (R908) and inductance (L902), the loop that inductance (L901) is in turn connected to form forms typical high pass network and by resistance (R919), inductance (L903) low-pass network that forms in parallel, the R electron gun of driving CET.
3, demonstration receiver complex video frequency amplify device according to claim 1, it is characterized in that: the rgb signal of computer is the identical build-out resistor of syndeton respectively, capacitance and on draw the limit same protective circuit, wherein one tunnel concrete structure is for after the R signal input, be connected to the R input of computer's RGB signal processor by electric capacity (CR01) and resistance (RR04), the R signal is also by resistance (RR01) ground connection; The R input of computer's RGB signal processor is also by diode (VDR02) ground connection, perhaps by diode (VDR01) and electric capacity (CR04) ground connection.
4, receive the complex video frequency amplify device of meeting sb. at the airport according to the described multimedia display of above-mentioned any one claim, it is characterized in that: three outputs of computer's RGB signal processor are the identical hooping position circuit of syndeton respectively, wherein one tunnel concrete structure is the loop of R output by being formed by voltage stabilizing didoe (VDR12) and electric capacity (CR22), pass through resistance (RR39) again and connect input, the R input is simultaneously by resistance (RR37) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248156 CN2372850Y (en) | 1998-11-16 | 1998-11-16 | Composite picture signal generator for multi-media display receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248156 CN2372850Y (en) | 1998-11-16 | 1998-11-16 | Composite picture signal generator for multi-media display receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2372850Y true CN2372850Y (en) | 2000-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98248156 Expired - Fee Related CN2372850Y (en) | 1998-11-16 | 1998-11-16 | Composite picture signal generator for multi-media display receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2372850Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005004455A1 (en) * | 2003-07-07 | 2005-01-13 | Ning Yuan | Wide bandwidth net image playing mobilephone and image playing method |
-
1998
- 1998-11-16 CN CN 98248156 patent/CN2372850Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005004455A1 (en) * | 2003-07-07 | 2005-01-13 | Ning Yuan | Wide bandwidth net image playing mobilephone and image playing method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: HAI XIN GROUP CO., LTD. TO: QINGDAO HISENSE ELECTRIC APPLIANCE CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Qingdao Hisense Electric Co., Ltd. Co-patentee before: Qingdao Haixin Group Technology Centre Patentee before: Haixin Group Co. |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |