CN102595084A - Method for automatically adjusting gain of image - Google Patents
Method for automatically adjusting gain of image Download PDFInfo
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- CN102595084A CN102595084A CN2011100016580A CN201110001658A CN102595084A CN 102595084 A CN102595084 A CN 102595084A CN 2011100016580 A CN2011100016580 A CN 2011100016580A CN 201110001658 A CN201110001658 A CN 201110001658A CN 102595084 A CN102595084 A CN 102595084A
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- signal
- video signal
- adjustment
- automatic gain
- standard value
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Abstract
The invention provides a method for automatically adjusting gain of an image. The method applies to an automatic gain balancing device, and comprises the following steps: reading an image signal by a processor, making a comparison between the image signal and a standard value to determine whether the image signal is equal to the standard value, if not, automatically adjusting an amplitude of the image signal by a gain adjusting device so as to generate an adjusted image signal; receiving the adjusted image signal by the processor, and transmitting the adjusted image signal to a remote receiving device to display. By using the method provided by the invention, the image signal can be effectively automatically adjusted to meet the standard value, and the use is convenient.
Description
Technical field
The present invention relates to a kind of image automatic gain method of adjustment, especially a kind of have a signal of video signal that automatic adjustment far-end receiving system is received, and reaches a standard value effectively to make signal of video signal, and then promote the image automatic gain method of adjustment of easy-to-use effect.
Background technology
Because the far-end receiving system of general public place or place to operate schools; Like TV, projector etc.; It all is the electronic installation (like DVD video player, computer, notebook computer) that is connected to the other end through a signal transmssion line; Make a signal of video signal of this electronic installation output be passed on the far-end receiving system, this far-end receiving system can the signal of video signal that receive be play via signal transmssion line.
But general signal transmssion line all exposes to the open air outside for a long time, makes signal transmssion line receive the influence of external factor easily, like factor such as humidity, weather, humidity, wire rod be old, and causes signal of video signal to lose precision.In addition, because of signal transmssion line length is to be confined in several meters, institute is so that signal transmssion line length when surpassing this scope, can cause the signal of video signal decay, and relative also can cause the signal of video signal distortion.Illustrate like the back: when far-end receiving system and electronic installation distance to each other during above the scope of this signal transmssion line length; Can make the far-end receiving system receive the signal of video signal decay that electronic installation transmits; The signal of video signal amplitude that this relative far-end receiving system is demonstrated can diminish, and situation such as picture deepening or distortion take place.
Therefore, the convention dealer just develops a kind of image manual gain method of adjustment in order to solve the above problems.See also Fig. 1; Existing image manual gain method of adjustment; Be applied on the manual gainequalizer 10; Have a red compensation button 101 and a green compensation button 102 and a blue compensation button 103 on the previous manual gainequalizer 10; And this manual gain equalizer 10 links this a far-end receiving system 12 and a transmitter 14 respectively, and the transmission means between this transmitter 14 and the manual gain equalizer 10 is transmitted through a signal transmssion line A1, and the other end of this transmitter 14 then connects electronic installation 16; And this far-end receiving system 12 is to transmit through a VGA holding wire A2 with manual gain equalizer 10 each other, and transmitter 14 is to transmit through another VGA holding wire A3 with electronic installation 16 to each other.
After at first electronic installation 16 is sent to signal of video signal on this transmitter 14; Follow aforementioned transmitter 14 and just pass to manual gain equalizer 10 through signal transmssion line A1; Making manual gain equalizer 10 earlier the signal of video signal that receives is sent on the far-end receiving system 12 shows; Then, be inserted in through the hand-held bottle opener instruments 171 (like screwdriver) of a user 17 and reverse the aforementioned red compensation button 101 of adjustment and green compensation button 102 and blue compensation button 103 on the manual gain equalizer 10 respectively;
Same time user 17 need constantly watch the signal of video signal that shows on the far-end receiving system 12 whether to equate the signal of video signal that original electronic installation 16 transmits; At last; If the signal of video signal that shows on the far-end receiving system 12 is equal to the signal of video signal of original transmission; Then 17 of users stop to reverse these compensation buttons; If the signal of video signal of demonstration is unequal in original signal of video signal on the far-end receiving system 12, then the user need constantly repeat to reverse respectively these compensation buttons of adjustment and watch till signal of video signal to signal of video signal that is equal to this original transmission of far-end receiving system 12 demonstrations.
Though through existing image manual gain method of adjustment; Can improve the signal of video signal distortion that far-end receiving system 12 shows; Its effect is clear, because of adjustment manual gain equalizer 10 respectively compensate button the time, be the signal of video signal of differentiating demonstration through human eye; So let the tangible difficulty of user be transferred to a standard value; The aforesaid standards value is that the standard value of signal of video signal amplitude is the 0.7Vp-p volt, and therefore existing method can't let signal of video signal reach the certain standard value, and also quite trifling and complicated in the process of adjustment.
The above, prior art has disadvantage:
1. the signal of video signal that shows can't be adjusted consistent and inaccurate;
2. set-up procedure is numerous and diverse and time-consuming;
3. convenience is not good.
Therefore, how to solve above-mentioned existing problem and shortcoming, be inventor of the present invention and desire most ardently the direction place that research improves with the relevant manufacturer that is engaged in the industry.
Summary of the invention
Therefore, for effectively solving the above problems, main purpose of the present invention is to provide a kind of image automatic gain method of adjustment with the signal of video signal that reaches automatic adjustment one far-end receiving system demonstration.
Secondary objective of the present invention provides a kind of image automatic gain method of adjustment that reaches easy-to-use that has.
Secondary objective of the present invention provides a kind of image automatic gain method of adjustment that reaches the saving adjustment time that has.
For reaching above-mentioned purpose; The present invention provides a kind of image automatic gain method of adjustment; Be applied to an automatic gain balance device; At first read and analyze a signal of video signal and standard value comparison, judge whether this signal of video signal equates with standard value, if this signal of video signal and standard value are unequal through a processor; Then a fader will produce the signal of video signal once adjustment after will adjusting the amplitude of this signal of video signal automatically, and this processor receives aforementioned signal of video signal through adjustment and passes to a far-end receiving system and show; Through the design of the method for the present invention, can effectively reach the good effect of ease of use, and then effectively reach the effect that automatic adjustment signal of video signal arrives the certain standard value again.
Preferably, if this signal of video signal equates that with standard value then this processor directly sends aforementioned signal of video signal to this far-end receiving system.
Preferably, if this signal of video signal is during less than standard value, then this fader increases the amplitude of this signal of video signal automatically, and the amplitude that makes this signal of video signal is along with increasing, and produces aforementioned signal of video signal through adjustment.
Preferably, during as if signal of video signal overgauge value, then this fader downgrades the amplitude of this signal of video signal automatically, and the amplitude that makes this signal of video signal is along with downgrading, to produce aforementioned signal of video signal through adjustment.
During enforcement, also comprise before the step of this processor will receive aforementioned signal of video signal through adjustment passes to this far-end receiving system:
This processor will read and analyze aforementioned signal of video signal through adjustment again, and compare with this standard value, judge whether this signal of video signal and standard value through adjustment equates;
If equate, then this processor directly sends aforementioned signal of video signal through adjustment to this far-end receiving system; And
If unequal, then this processor produces a control signal, makes this fader readjust the aforementioned signal of video signal that behind the amplitude of signal of video signal of adjustment, produces once more once adjustment automatically according to control signal.
Preferably, this automatic gain balance device connects a transmitter, and this transmitter connects an electronic installation, and this transmitter is given this automatic gain balance device in order to transmit aforementioned signal of video signal.
Preferably, transmit through one first transmission line between this transmitter and the automatic gain balance device, this first transmission line is chosen as one the 5th classification cable (CAT5), 5e classification cable (CAT5e) or one the 6th classification cable (CAT6).
Preferably, this far-end receiving system is a LCD display, a projector or a TV.
Preferably, through one second transmission line transmission, this second transmission line is a VGA transmission line between this far-end receiving system and the automatic gain balance device.
The present invention has advantage compared to prior art:
Have automatic adjustment signal of video signal and arrive certain standard value;
Have numerous and diverse set-up procedure of saving, adjust the effect in man-hour with effective saving;
Ease of use is good.
Description of drawings
Fig. 1 is the enforcement sketch map of prior art;
Fig. 2 is the enforcement sketch map of preferred embodiment of the present invention;
Fig. 3 is the block schematic diagram of preferred embodiment of the present invention;
Fig. 4 is the schematic flow sheet of preferred embodiment of the present invention.
Description of reference numerals: 2-automatic gain balance device; 4-far-end receiving system; The 21-fader; The 5-electronic installation; The 22-processor; L1-first transmission line; The 221-analog/digital converter; L2-second transmission line; The 3-transmitter; L3-the 3rd transmission line.
Embodiment
Characteristic on above-mentioned purpose of the present invention and structure thereof and the function will be explained according to the preferred embodiment of accompanying drawing.
A kind of image automatic gain of the present invention method of adjustment; See also Fig. 2 and Fig. 3 and show preferable enforcement of the present invention; This method is applied to an automatic gain balance device 2; This automatic gain balance device 2 needs collocation to link a transmitter 3 uses; And transmit signal to each other through one first transmission line L1 between aforementioned transmitter 3 and the automatic gain balance device 2, it is wherein arbitrary that the aforementioned first transmission line L1 is chosen as one the 5th classification cable (CAT5), 5e classification cable (CAT5e) and one the 6th classification cable (CAT6), does explanation at this preferable enforcement first transmission line L1 with 5e classification cable (CAT5e).
In addition; Aforementioned transmitter 3 one ends connect electronic installation 5 (like video player (DVD (Digital Versatile Disc through one the 3rd transmission line L3; Digital versatile disc) player, VCD (Video Compact Disc; Video and audio CD disc) player, computer, notebook computer); Its other end then connects the first transmission line L1, and this transmitter 3 passes to automatic gain balance device 2 signal of video signal of adjustment reception automatically in order to receive a signal of video signal that transmits from electronic installation 5 through the aforementioned first transmission line L1; Include three primary colors (R, G, B) signal and a horizontal synchronization (H-sync) signal and a vertical synchronization (V-sync) signal in the aforementioned signal of video signal, horizontal synchronization (H-sync) signal and vertical synchronization (V-sync) signal are in order to these three primary colors of synchronous triggering (R, G, B) signal.
Aforementioned automatic gain balance device 2 has a fader 21 and a processor 22 connects this fader 21; This fader 21 is in order to the amplitude of adjustment signal of video signal; This processor 22 is in order to reading and to analyze the signal of video signal of reception, and judge whether must the adjustment signal of video signal amplitude, and be provided with analog/digital converter a 221 (analog-to-digital converter in the said processor 22; Hereinafter to be referred as ADC); This analog/digital converter 221 converts digital signal of video signal in order to the form of conversion signal of video signal into like the signal of video signal with simulation, or converts digital image signal the signal of video signal of simulation into.
Moreover this automatic gain balance device 2 connects a far-end receiving system 4, and this far-end receiving system 4 is like LCD display (Liquid Crystal Display; LCD), a projector and a TV are wherein arbitrary; Explain with LCD display in this preferable enforcement, in the specific implementation, all devices that can be used to show aforementioned signal of video signal; Be far-end receiving system 4 of the present invention, close first Chen Ming.Wherein transmit through one second transmission line L2 between this far-end receiving system 4 and the automatic gain balance device 2, this second transmission line L2 is a VGA (Video Graphic Array, a Video Graphics Array) transmission line.
So that automatic gain balance device 2 carries out analyzing and processing according to the signal of video signal that receives; And judge whether to need the amplitude of adjustment signal of video signal; If in the time of need not adjusting, then this automatic gain balance device 2 just directly sends said signal of video signal to far-end receiving system 4, the signal of video signal that 4 bases of far-end receiving system are received shows; Arrive the certain standard value effectively to reach automatic adjustment signal of video signal, and then effectively reach saving adjustment time and easy-to-use effect again.Wherein the aforesaid standards value is that the standard value of signal of video signal (being three primary colors (R, G, B) signals) amplitude is the 0.7Vp-p volt.
See also Fig. 4, show the schematic flow sheet of preferred embodiment of the present invention, this method comprises the following steps: among the figure
(200) beginning;
(201) read and analyze a signal of video signal and standard value comparison through a processor, judge whether this signal of video signal equates with standard value; If then skip to step (206); Otherwise continue step (202);
Aforementioned electronic 5 transmits signal of video signal and gives transmitter 3; Make transmitter 3 signal of video signal passed to the processor 22 of automatic gain balance device 2 through the first transmission line L1; Make this processor 22 will read and analyze aforementioned signal of video signal; And compare with standard value (being that standard value is the 0.7Vp-p volt), after three primary colors (R, G, B) signal and the standard value that also is about to signal of video signal compared, whether equate with standard value with three primary colors (R, G, the B) signal of judging signal of video signal; If unequal, execution in step (202) then; If equate, then execution in step (206).
(202) if this signal of video signal and standard value unequal (as being greater than or less than), then a fader produces once the signal of video signal of adjusting after adjusting the amplitude of this signal of video signal automatically;
That is; If three primary colors (R, G, the B) signal of this signal of video signal is during less than this standard value; Then processor 22 can produce a control signal and send this fader 21 to, makes fader 21 learn three primary colors (R, G, B) signal less than this standard value according to aforementioned control signal, with the amplitude of three primary colors (R, G, the B) signal that increases this signal of video signal automatically; This moment this signal of video signal the amplitude of three primary colors (R, G, B) signal also along with increasing, and produce aforementioned signal of video signal through adjustment;
If during three primary colors (R, G, B) the signal overgauge value of signal of video signal; Then processor 22 can transmit control signal and give this fader 21; Make fader 21 learn that according to aforementioned control signal three primary colors (R, G, B) signal is greater than this standard value; Automatically downgrade the amplitude of three primary colors (R, G, the B) signal of this signal of video signal, the amplitude of three primary colors (R, G, the B) signal of this signal of video signal is along with downgrading, to produce aforementioned signal of video signal through adjustment at this moment.
(203) this processor will read and analyze aforementioned signal of video signal through adjustment again, and compare with this standard value, judge whether this signal of video signal and standard value through adjustment equates; If then continue step (204); Otherwise, then skip to step (205);
Aforementioned processing device 22 will read and analyze three primary colors (R, G, the B) signal of the signal of video signal of aforementioned warp adjustment again and compare with standard value once more; To judge whether this three primary colors (R, G, B) signal and standard value through the signal of video signal of adjustment equates; If equate, then execution in step (204); If unequal, execution in step (205) then.
(204) then this processor directly sends aforementioned signal of video signal through adjustment to this far-end receiving system;
If processor 22 judges that this is through the three primary colors (R, G, B) of the signal of video signal of adjustment when signal is equal to standard value; Then this processor 22 will be given far-end receiving system 4 through the second transmission line L2 through the signal of video signal of adjustment; Far-end receiving system 4 is play according to aforementioned signal of video signal through adjustment, and the signal of video signal picture that show this moment is undistorted and image contrast satisfies.
(205) then this processor produces a control signal; Make fader readjust this automatically and behind the amplitude of the signal of video signal of adjustment, produce signal of video signal once more once adjustment according to control signal; And return step (203); Even also processor 22 repeats to read and analyze aforementioned signal of video signal through adjustment always, till judging aforementioned signal of video signal through adjustment and this standard value equates;
(206) this processor sends the far-end receiving system directly with aforementioned signal of video signal to through second transmission line, so that this far-end receiving system shows according to signal of video signal.
Therefore,, make effectively to reach the effect that automatic adjustment signal of video signal arrives certain standard value, and then have preferable convenience in the use that relative can effectively save the adjustment effect in man-hour through the design of the method for the present invention.
In sum, the present invention has advantage compared to prior art:
Have automatic adjustment signal of video signal and arrive certain standard value;
Have numerous and diverse set-up procedure of saving, adjust the effect in man-hour with effective saving;
Ease of use is good.
The above is merely preferred embodiment of the present invention, and only characteristic of the present invention is not limited thereto, and anyly is familiar with this art in field of the present invention, can think easily and variation or modification, all should be encompassed in the following claim of the present invention.
Claims (9)
1. image automatic gain method of adjustment, it is applied to an automatic gain balance device, it is characterized in that, and this method comprises:
Read and analyze a signal of video signal and standard value comparison through a processor, judge whether this signal of video signal equates with standard value;
If this signal of video signal and standard value are unequal, then a fader produces once the signal of video signal of adjusting after adjusting the amplitude of this signal of video signal automatically; And
The aforementioned signal of video signal through adjustment that this processor will receive passes to a far-end receiving system.
2. image automatic gain method of adjustment according to claim 1 is characterized in that, if this signal of video signal equates that with standard value then this processor directly sends aforementioned signal of video signal to this far-end receiving system.
3. image automatic gain method of adjustment according to claim 1; It is characterized in that if this signal of video signal is during less than standard value, then this fader increases the amplitude of this signal of video signal automatically; The amplitude that makes this signal of video signal is along with increasing, and produces aforementioned signal of video signal through adjustment.
4. image automatic gain method of adjustment according to claim 1; It is characterized in that during as if signal of video signal overgauge value, then this fader downgrades the amplitude of this signal of video signal automatically; The amplitude that makes this signal of video signal is along with downgrading, to produce aforementioned signal of video signal through adjustment.
5. image automatic gain method of adjustment according to claim 1 is characterized in that, also comprises before the step of this processor will receive aforementioned signal of video signal through adjustment passes to this far-end receiving system:
This processor will read and analyze aforementioned signal of video signal through adjustment again, and compare with this standard value, judge whether this signal of video signal and standard value through adjustment equates;
If equate, then this processor directly sends aforementioned signal of video signal through adjustment to this far-end receiving system; And
If unequal, then this processor produces a control signal, makes this fader readjust the aforementioned signal of video signal that behind the amplitude of signal of video signal of adjustment, produces once more once adjustment automatically according to control signal.
6. image automatic gain method of adjustment according to claim 1 is characterized in that this automatic gain balance device connects a transmitter, and this transmitter connects an electronic installation, and this transmitter is given this automatic gain balance device in order to transmit aforementioned signal of video signal.
7. image automatic gain method of adjustment according to claim 6; It is characterized in that; Transmit through one first transmission line between this transmitter and the automatic gain balance device, this first transmission line is chosen as one the 5th classification cable, 5e classification cable or one the 6th classification cable.
8. image automatic gain method of adjustment according to claim 1 is characterized in that, this far-end receiving system is a LCD display, a projector or a TV.
9. image automatic gain method of adjustment according to claim 1 is characterized in that, through one second transmission line transmission, this second transmission line is a VGA transmission line between this far-end receiving system and the automatic gain balance device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100016580A CN102595084A (en) | 2011-01-06 | 2011-01-06 | Method for automatically adjusting gain of image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100016580A CN102595084A (en) | 2011-01-06 | 2011-01-06 | Method for automatically adjusting gain of image |
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| CN102595084A true CN102595084A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100016580A Pending CN102595084A (en) | 2011-01-06 | 2011-01-06 | Method for automatically adjusting gain of image |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88102409A (en) * | 1987-04-23 | 1988-11-09 | Rca许可公司 | The photosensitive image controller of manual and automatic environment of television set |
| US5712690A (en) * | 1994-06-23 | 1998-01-27 | Samsung Electronics Co., Ltd. | Apparatus and method for diagnosing received broadcast signals using sync signals and signal level |
| US5818999A (en) * | 1986-05-12 | 1998-10-06 | Canon Kabushiki Kaisha | Video signal reproducing apparatus |
-
2011
- 2011-01-06 CN CN2011100016580A patent/CN102595084A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5818999A (en) * | 1986-05-12 | 1998-10-06 | Canon Kabushiki Kaisha | Video signal reproducing apparatus |
| CN88102409A (en) * | 1987-04-23 | 1988-11-09 | Rca许可公司 | The photosensitive image controller of manual and automatic environment of television set |
| US5712690A (en) * | 1994-06-23 | 1998-01-27 | Samsung Electronics Co., Ltd. | Apparatus and method for diagnosing received broadcast signals using sync signals and signal level |
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Application publication date: 20120718 |