CN107707847A - Using the television scanning system of distortion correction circuit - Google Patents
Using the television scanning system of distortion correction circuit Download PDFInfo
- Publication number
- CN107707847A CN107707847A CN201710967059.1A CN201710967059A CN107707847A CN 107707847 A CN107707847 A CN 107707847A CN 201710967059 A CN201710967059 A CN 201710967059A CN 107707847 A CN107707847 A CN 107707847A
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- CN
- China
- Prior art keywords
- circuit
- resistance
- distortion correction
- processing module
- electric capacity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/14—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
The invention discloses the television scanning system of application distortion correction circuit, including Video Decoder, synchronizing separator circuit, brightness processed and chroma decoding circuit, final stage is depending on putting, kinescope, line scan signals generation circuit, field scan signal generating circuit, output processing module, distortion correction circuit, return transformer, deflection coil, Video Decoder, synchronizing separator circuit, brightness processed and chroma decoding circuit, final stage is depending on putting, kinescope is sequentially connected, synchronizing separator circuit is connected with Video Decoder, crystal oscillation and row AFC circuit, line scan signals generation circuit, field scan signal generating circuit, output processing module is sequentially connected, distortion correction circuit, return transformer, deflection coil is sequentially connected, output processing module is connected with distortion correction circuit.The present invention improves the stability of scanning system, required various senior middle school's low-voltages is also provided for other circuits by line scan signals generation circuit, field scan signal generating circuit, output processing module.
Description
Technical field
The present invention relates to television scanning field, and in particular to using the television scanning system of distortion correction circuit.
Background technology
TV (Television, TV, Video) refers to the image frame and audio using electronic technology and equipment transmission activity
Signal, i.e. television receiver, and important broadcast and video communication instrument, television set is earliest by Britain engineer John Lip river
Lucky Baird is invented in nineteen twenty-five.The visual pattern of TV electronically transmission activity immediately.It is similar with film, TV profit
Show the rest image of a frame frame gradual change with the persistence of vision effect of human eye, form visual live image.Television system is sent out
It is order transmission after electric signal that each fine fraction of scenery is pressed brightness and chroma conversion by sending end.In receiving terminal by corresponding several
What position shows brightness and the colourity of each fine fraction to reappear view picture original image.The progress of science and technology, is that TV is rapid
One major reason of popularization.Various countries' TV signal scanning standard and channel broadband are incomplete same, are seeked advice from by international wireless electricity
The suggestion of the committee (CCIR) is distinguished with the Latin alphabet.The scanning system stability of existing television set is weaker, and output signal is held
It is also easy to produce snowflake.
The content of the invention
The technical problems to be solved by the invention are that the scanning system stability of existing television set is weaker, and output signal is easy
Produce snowflake, and it is an object of the present invention to provide using distortion correction circuit television scanning system, improve the stability of scanning system.
The present invention is achieved through the following technical solutions：
Using the television scanning system of distortion correction circuit, including Video Decoder, synchronizing separator circuit, brightness processed
And chroma decoding circuit, final stage are depending on putting, kinescope, crystal oscillation and row AFC circuit, line scan signals generation circuit, field scan
Signal generating circuit, output processing module, distortion correction circuit, return transformer, deflection coil, it is the Video Decoder, same
Step split circuit, brightness processed and chroma decoding circuit, final stage are depending on putting, kinescope is sequentially connected, the synchronizing separator circuit and
Video Decoder connect, crystal oscillation and the row AFC circuit, line scan signals generation circuit, field scan signal generating circuit,
Output processing module is sequentially connected, and the distortion correction circuit, recurrence transformer, deflection coil are sequentially connected, at the output
Reason module is connected with distortion correction circuit；
The serious circuit of distortion includes resistance R6, resistance R7, resistance R8, potentiometer R9, resistance R10, resistance R11, electricity
R12, resistance R13, triode V1, diode D2, electric capacity C4, electric capacity C5, electric capacity C6, inductance L1 are hindered, the electric capacity C5 mono- is terminated
Ground, its other end are connected with integrated package U1 7 pins；Described resistance R13 one end is connected to what integrated package U1 was connected with electric capacity C5
On circuit, its other end ground connection；A fixing end of the potentiometer R9 is connected to the circuit that resistance R13 is connected with electric capacity C5
On, its another fixing end is connected with resistance R10；The other end at the resistance R10 connections potentiometer R9 ends connects with resistance R11
Connect；The other end of the resistance R11 is connected with inductance L1, and the other end of the inductance L1 is parabolic wave output terminal；The resistance
R12 one end is connected on the circuit that resistance R11 is connected with inductance L1, and its other end is connected with triode V1 colelctor electrode；It is described
Triode V1 base stage is connected on the circuit that resistance R10 is connected with resistance R11, triode V1 grounded emitter；The electricity
Hold C6 one end to be connected on the circuit that resistance R12 is connected with inductance L1, its other end ground connection；5 pins of the integrated package U1 connect
It is connected on the circuit that resistance R10 is connected with triode V1.
Horizontal and vertical two groups of deflection coils are provided with the neck of kinescope, line output circuit carries for line deflector coil
For it is linear good, amplitude is enough, the accurate sawtooth current of frequency, vertical output circuit provides vertical scanning for field deflection coil
Sawtooth waveforms, make the scanning motion of electron beam progress both horizontally and vertically, meanwhile, scanning system provides row for kinescope, field disappears
Sound pulse signal, enter every trade field flyback return line, line-scan circuit provides line flyback pulse for PAL-system decoding circuit, controls PAL
Switch, produce the reference subcarrier of line-by-line inversion.Line flyback pulse also supplies synchronizing signals of the CPU as character, line flyback transformation
Device provides for display tube to be focused on pole tension and accelerates step voltage, and required various senior middle school's low-voltages are also provided for other circuits.
R9 in figure adjusts potentiometer for pincushion type distortion correcting value, and it is substantially the 5 pin output signals feedback for changing N551 to adjust it
To the amount of negative feedback of 7 pin, the parabolic voltage amplitude of 5 pin output is also just changed, makes correcting value moderate, grating is kept square shape
Undistorted state.
Further, using the television scanning system of distortion correction circuit, the output processing module includes vertical touch
Power Generation Road, zig-zag are amplified into circuit and output amplifier, the vertical triggers circuit, zig-zag into circuit and output
Circuit is sequentially connected, and the vertical triggers circuit is connected with field scan signal generating circuit, the output amplifier and deflection
Coil connects.
Further, it is wrapped in using the television scanning system of distortion correction circuit, the deflection coil on kinescope.
The present invention compared with prior art, has the following advantages and advantages：The present invention is produced by line scan signals
Raw circuit, field scan signal generating circuit, output processing module, improve the stability of scanning system, are also provided for other circuits
Required various senior middle school's low-voltages.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is distortion correction circuit structural representation of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As depicted in figs. 1 and 2, using the television scanning system of distortion correction circuit, it is characterised in that including video solution
Code device, synchronizing separator circuit, brightness processed and chroma decoding circuit, final stage are depending on putting, kinescope, crystal oscillation and row AFC circuit,
Line scan signals generation circuit, field scan signal generating circuit, output processing module, distortion correction circuit, return transformer, partially
Switch coil, the Video Decoder, synchronizing separator circuit, brightness processed and chroma decoding circuit, final stage are depending on putting, kinescope successively
Connection, the synchronizing separator circuit are connected with Video Decoder, and crystal oscillation and the row AFC circuit, line scan signals produce
Circuit, field scan signal generating circuit, output processing module are sequentially connected, and the distortion correction circuit, return transformer, deflection
Coil is sequentially connected, and the output processing module is connected with distortion correction circuit；
The serious circuit of distortion includes resistance R6, resistance R7, resistance R8, potentiometer R9, resistance R10, resistance R11, electricity
R12, resistance R13, triode V1, diode D2, electric capacity C4, electric capacity C5, electric capacity C6, inductance L1 are hindered, the electric capacity C5 mono- is terminated
Ground, its other end are connected with integrated package U1 7 pins；Described resistance R13 one end is connected to what integrated package U1 was connected with electric capacity C5
On circuit, its other end ground connection；A fixing end of the potentiometer R9 is connected to the circuit that resistance R13 is connected with electric capacity C5
On, its another fixing end is connected with resistance R10；The other end at the resistance R10 connections potentiometer R9 ends connects with resistance R11
Connect；The other end of the resistance R11 is connected with inductance L1, and the other end of the inductance L1 is parabolic wave output terminal；The resistance
R12 one end is connected on the circuit that resistance R11 is connected with inductance L1, and its other end is connected with triode V1 colelctor electrode；It is described
Triode V1 base stage is connected on the circuit that resistance R10 is connected with resistance R11, triode V1 grounded emitter；The electricity
Hold C6 one end to be connected on the circuit that resistance R12 is connected with inductance L1, its other end ground connection；5 pins of the integrated package U1 connect
It is connected on the circuit that resistance R10 is connected with triode V1.
The output processing module includes vertical triggers circuit, zig-zag into circuit and output amplifier, described to hang down
Straight triggers circuit, zig-zag are sequentially connected into circuit and output amplifier, the vertical triggers circuit and field scan signal
Generation circuit is connected, and the output amplifier is connected with deflection coil.
The deflection coil is wrapped on kinescope
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (3)
1. the television scanning system of application distortion correction circuit, it is characterised in that including Video Decoder, separated in synchronization electricity
Road, brightness processed and chroma decoding circuit, final stage are depending on putting, kinescope, crystal oscillation and row AFC circuit, line scan signals produce
Circuit, field scan signal generating circuit, output processing module, distortion correction circuit, recurrence transformer, deflection coil, it is described to regard
Frequency decoder, synchronizing separator circuit, brightness processed and chroma decoding circuit, final stage are depending on putting, kinescope is sequentially connected, the synchronization
Split circuit is connected with Video Decoder, crystal oscillation and the row AFC circuit, line scan signals generation circuit, field scan letter
Number generation circuit, output processing module are sequentially connected, the distortion correction circuit, return transformer, deflection coil is sequentially connected,
The output processing module is connected with distortion correction circuit；
The serious circuit of distortion includes resistance R6, resistance R7, resistance R8, potentiometer R9, resistance R10, resistance R11, resistance
R12, resistance R13, triode V1, diode D2, electric capacity C4, electric capacity C5, electric capacity C6, inductance L1, electric capacity C5 one end ground connection,
Its other end is connected with integrated package U1 7 pins；Described resistance R13 one end is connected to the circuit that integrated package U1 is connected with electric capacity C5
On, its other end ground connection；A fixing end of the potentiometer R9 is connected on the circuit that resistance R13 is connected with electric capacity C5, its
Another fixing end is connected with resistance R10；The other end at the resistance R10 connections potentiometer R9 ends is connected with resistance R11；It is described
The resistance R11 other end is connected with inductance L1, and the other end of the inductance L1 is parabolic wave output terminal；Described resistance R12 one end
It is connected on the circuit that resistance R11 is connected with inductance L1, its other end is connected with triode V1 colelctor electrode；The triode V1
Base stage be connected on the circuit that resistance R10 is connected with resistance R11, triode V1 grounded emitter；Described electric capacity C6 one end
It is connected on the circuit that resistance R12 is connected with inductance L1, its other end ground connection；5 pins of the integrated package U1 are connected to resistance
On the circuit that R10 is connected with triode V1.
2. the television scanning system according to claim 1 using distortion correction circuit, it is characterised in that the output
Processing module includes vertical triggers circuit, zig-zag into circuit and output amplifier, vertical triggers circuit, the sawtooth waveforms
Form circuit and output amplifier is sequentially connected, the vertical triggers circuit is connected with field scan signal generating circuit, described
Output amplifier is connected with deflection coil.
3. the television scanning system according to claim 1 using distortion correction circuit, it is characterised in that the deflection
Coil is wrapped on kinescope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967059.1A CN107707847A (en) | 2017-10-17 | 2017-10-17 | Using the television scanning system of distortion correction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967059.1A CN107707847A (en) | 2017-10-17 | 2017-10-17 | Using the television scanning system of distortion correction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107707847A true CN107707847A (en) | 2018-02-16 |
Family
ID=61183898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710967059.1A Withdrawn CN107707847A (en) | 2017-10-17 | 2017-10-17 | Using the television scanning system of distortion correction circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379513A (en) * | 2018-10-30 | 2019-02-22 | 东北大学 | It is a kind of to reproduce black-and-white television video imaging apparatus with oscillograph |
-
2017
- 2017-10-17 CN CN201710967059.1A patent/CN107707847A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379513A (en) * | 2018-10-30 | 2019-02-22 | 东北大学 | It is a kind of to reproduce black-and-white television video imaging apparatus with oscillograph |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180216 |