CN103248856A - Image signal delay compensation method and image signal delay compensation device - Google Patents
Image signal delay compensation method and image signal delay compensation device Download PDFInfo
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- CN103248856A CN103248856A CN2012100281152A CN201210028115A CN103248856A CN 103248856 A CN103248856 A CN 103248856A CN 2012100281152 A CN2012100281152 A CN 2012100281152A CN 201210028115 A CN201210028115 A CN 201210028115A CN 103248856 A CN103248856 A CN 103248856A
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Abstract
The invention discloses an image signal delay compensation method which is used for controlling a first image signal, a second image signal and a third image signal which are different in transmission time. The method comprises the steps that a first control command is received for prolonging the transmission time of at least one of the first image signal and the second image signal to the same first time; an operation instruction for indicating to prolong or shorten the transmission time of the third image signal is received, and the output time of the third image signal is the second time, so that the output time of the third image signal is the same as that of the first image signal and the second image signal; the operation instruction is analyzed; a second control command is generated; the transmission time of the third image signal is adjusted according to the second control command from the second time, so that the output time of the third image signal is the same as the first time; or the transmission time of the first image signal and the second image signal is adjusted from the first time, so that the output time of the first image signal and the second image signal is the same as the second time.
Description
Technical field
The present invention is relevant for a kind of method for compensating signal and device thereof, particularly relevant for signal of video signal delay compensation method and the device thereof of signal delay.
Background technology
The matching test signal of video signal is subject to the influence of employed signal transmssion line structure, is easy to generate the situation that a plurality of signal of video signal can't arrive display unit synchronously, causes the quality of image frame low.
Having on the market in order to compensate the device of described signal of video signal, to comprise at present provides operation interface to adjust the transmission time of each signal of video signal one by one for the user.Owing to be not that each user can both once just adjust to consistent time output to all signal of video signal, so the experience that often will be dependent on the user, need to finely tune repeatedly according to the result who manually adjusts the time of delay of each signal of video signal, be easy to expend user's time.
Automatic calibration apparatus Auto-Sensing is also arranged in addition and adjust transmission time of each signal of video signal, but because full-automatic adjustment and the means in compensation signal of video signal transmission time are not to adjust based on user's visual impression, so be easy to take place the not exclusively accurately problem of compensation continuity.
Summary of the invention
Technical problem to be solved by this invention is proofread and correct a plurality of signal of video signal outputs fast asynchronous.
For achieving the above object, the invention provides a kind of signal of video signal delay compensation method, utilize control unit and Postponement module control different a plurality of signal of video signal of transmission time.Described signal of video signal comprises first signal of video signal, second signal of video signal and the 3rd signal of video signal.
Described method comprises: accept first control command, and can postpone in the scope to prolong first signal of video signal and second signal of video signal transmission time of one of them at least according to first control command, make the output time of first signal of video signal and second signal of video signal be all the very first time, then accept operational order, described operational order prolongs or shortens output time in order to indication is the transmission time of the 3rd signal of video signal of second time, makes the output time of the 3rd signal of video signal identical with the output time of first signal of video signal and second signal of video signal; Analysis operation instruction and according to second time and can the delay scope produce second control command; Again according to second control command, in the transmission time that can postpone to adjust from second time in the scope the 3rd signal of video signal, make the output time of the 3rd signal of video signal identical with the very first time, or in the transmission time that can postpone to adjust from the very first time in the scope first signal of video signal and second signal of video signal, make the output time of first signal of video signal and second signal of video signal identical with second time.
For achieving the above object, the invention provides a kind of signal of video signal delay compensation method, when the transmission time of the 3rd signal of video signal is shortened in this operational order indication, this second control command is for prolonging transmission time of this first signal of video signal and this second signal of video signal from this very first time, to the output time of this first signal of video signal and this second signal of video signal be this second time.
For achieving the above object, the invention provides a kind of signal of video signal delay compensation method, when this operational order indication prolongs the transmission time of the 3rd signal of video signal, this second control command is the transmission time from this second time lengthening the 3rd signal of video signal, output time to the 3rd signal of video signal is this very first time, or for shortening transmission time of this first signal of video signal and this second signal of video signal from this very first time, to the output time of this first signal of video signal and this second signal of video signal be this second time.
For achieving the above object, the invention provides a kind of signal of video signal delay compensation method, this second time is the initial output time of the 3rd signal of video signal.
For achieving the above object, the invention provides a kind of signal of video signal delay compensation method, more comprise before receiving this first control command:
Provide operating unit and display interface to adjust the output time of these signal of video signal for the user, wherein, this display interface shows the picture that these signal of video signal are exported according to corresponding output time respectively; Wherein, this operational order produces according to the operated result of this operating unit.In addition, for reaching above-mentioned purpose, it is a kind of in order to carry out the signal delay compensation arrangement of said method that the embodiment of the invention also provides, and comprises a plurality of delay circuits, control unit and operating unit.Delay circuit is in order to control the different a plurality of signal of video signal of transmission time length.Described signal of video signal comprises first signal of video signal, second signal of video signal and the 3rd signal of video signal, described delay circuit comprises first delay circuit of adjusting this first signal of video signal, second delay circuit of adjusting this second signal of video signal, and adjusts the 3rd delay circuit of the 3rd signal of video signal.Control unit produces first control command and prolongs first signal of video signal and second signal of video signal respectively one of them transmission time and received an operational order and produces second control command to the very first time at least to control first delay circuit and second delay circuit.Operating unit is corresponding delay circuit then, produces the operational order that the transmission time with the 3rd signal of video signal was shortened or prolongs from second time in order to accept operation.Control unit is according to second control command, adjust the transmission time of the 3rd signal of video signal from second time, make the output time of the 3rd signal of video signal identical with the very first time, or adjust transmission time of first signal of video signal and second signal of video signal from the very first time, make the output time of first signal of video signal and second signal of video signal identical with second time.
In sum, signal of video signal delay compensation means provided by the present invention and method can be proofreaied and correct a plurality of signal of video signal fast and be exported nonsynchronous problem, and manually adjust and still fully synchronously the time the user, automatically the time of delay of each signal of video signal is adjusted on relativity ground, drop with except the output time between each signal of video signal that disappears reaches the effect of safeguarding image display quality.
Description of drawings
Fig. 1 is the calcspar of a kind of signal of video signal delay compensation means embodiment provided by the invention;
Fig. 2 is the schematic diagram of a kind of signal of video signal delay compensation means embodiment provided by the invention;
Fig. 3 is that display unit shows the schematic diagram of proofreading and correct the back signal of video signal in the embodiment of the invention;
Fig. 4 A is the schematic diagram of uncorrected signal of video signal in the embodiment of the invention;
Fig. 4 B is the sequential chart in illustrative a kind of signal of video signal transmission time of the present invention;
Fig. 5 A is the schematic diagram of uncorrected signal of video signal in another embodiment of the present invention;
Fig. 5 B is the sequential chart in illustrative another kind of signal of video signal transmission time of the present invention;
Fig. 6 is the sequential chart in illustrative another signal of video signal transmission time of the present invention; And
Fig. 7 is the flow chart of a kind of signal of video signal delay compensation method embodiment provided by the invention.
Wherein, Reference numeral:
1,1a signal of video signal deferred mount, 10 Postponement modules
100 first delay circuits, 102 second delay circuits
104 the 3rd delay circuits, 12 control units
14,14a operating unit, 16 signal input connectors
18 signal output connectors, 2 display unit
20 image input units, 22 color signals
24 color signals, 26 color signals
28RGB signal v1 first signal of video signal
The v2 second signal of video signal v3 the 3rd signal of video signal
Second time of td1 very first time td2
The S701-S723 process step
Embodiment
Please refer to Fig. 1, Fig. 1 is the calcspar of a kind of signal of video signal delay compensation means embodiment provided by the present invention.Signal of video signal delay compensation means 1 (hereinafter to be referred as compensation arrangement 1) comprises Postponement module 10, control unit 12 and operating unit 14.Postponement module 10 can comprise a plurality of delay circuits, is that example describes with three in the present embodiment, comprises first delay circuit 100, second delay circuit 102 and the 3rd delay circuit 104.Postponement module 10 and operating unit 14 are connected to control unit 12.The compensation arrangement 1 of present embodiment can utilize three groups of delay circuits 100,102 and 104 to compensate and proofread and correct three group image signals one to one because of the transmission range difference, and it is poor to cause signal of video signal to be sent to display unit 2 output time when showing.Described three group image signal v1, v2, v3 can be respectively R, G, the B color signal of video image array (VGA).For ease of explanation, three group image signals are called the first signal of video signal v1, the second signal of video signal v2 and the 3rd signal of video signal v3.
After described a plurality of signal of video signal v1 exports to v3 from signal source, can influence the time that arrives display unit 2 separately because of the difference of transmission range, wherein, the required transmission time of the signal of video signal that transmission range is the longest also can be the longest, makes the corresponding image signal arrive display unit 2 the latest.In other words, because the pixel that converts to of signal of video signal is by left-to-right output at the panel of display unit, so the image frame of the later signal of output time can be offset to the right, and appears at the location right of the image frame of output time signal early.Usually, under the unaltered situation of transmission range, can't shorten the described transmission time that arrives the signal of video signal of display unit 2 the latest, therefore also can't utilize the mode of exporting described signal of video signal in advance, make other short signal of video signal of itself and transmission time output to display unit 2 synchronously.
This moment can utilize control unit 12 control lag circuit 100 to 104 wherein any one, in limited postponed scope, extend transmission distance respectively the transmission time of short signal of video signal, so that short signal of video signal of transmission time is postponed by the corresponding circuit of delaying, wait and transmission time, the longest signal of video signal was together exported, reach the effect that allows the inconsistent a plurality of signal of video signal of script output time can be synchronized with identical time point output, keep the display quality of image frame on display unit 2.
For the benefit of understand, see also the schematic diagram of compensation arrangement 1a embodiment shown in Figure 2.Described compensation arrangement 1a can be provided with in order to the operating unit 14a in the transmission time of adjusting signal of video signal, respectively in order to input signal v1_in, the v2_in that receives signal of video signal, the signal input connector 16 of v3_in (referring to Fig. 1), and in order to output signal v1_out, the v2_out of the signal of video signal after inciting somebody to action synchronously, the signal output connector 18 of v3_out output.Signal output connector 18 can see through holding wire and be connected with the image input unit 20 of display unit 2, arrives display unit 2 with transmission output signal.Wherein, shown image corresponds respectively to output signal v1_out, v2_out and the v3_out that compensation arrangement 1a exports on the display unit 2, namely is respectively R, G, B color signal 22,24 and 26 corresponding to aforesaid example.
If the transmission time not compensated device 1a of the signal of video signal that transmission range is different adjusts, the image frame that is presented on the display unit 2 namely may be as shown in Figure 2, signal of video signal v1, v2 and v3 be output synchronously not, the output time of signal of video signal v3 is later than signal of video signal v2, and the output time of signal of video signal v2 is later than signal of video signal v1, causes the display position skew of color signal 22 to 26.In the present embodiment, namely need to see through the transmission time (need adjust the transmission time of two signal of video signal in this example at least) that compensation arrangement 1a adjusts each signal of video signal respectively, so that the color signal 22 that presents on the display unit 2,24 and 26 at last can be synchronously overlapping as the picture as shown in the schematic diagram of Fig. 3, to present clear and correct rgb signal 28.
Continue to consult Fig. 2, operating unit 14a can be and comprises that one or more knobs, button, switch or control lever etc. can adjust machinery or the electronic component of scale in limited range, each described machinery or electronic component can be corresponding with a delay circuit (Fig. 2 does not show), as three knobs that have been illustration among Fig. 2.The number of times that the amplitude that is rotated according to different knobs or button (Fig. 2 does not show) are pressed can produce operational order, control unit receives and by analysis after the indicated adjustment mode of operational order, can produce the control command of the corresponding delay circuit of control, make the delay circuit of correspondence increase the time of delay of signal of video signal in proportion or reduce time of delay, to change the transmission time that signal of video signal is sent to display unit 2.The user can be according to the Position Control operating unit 14a of color signal demonstration on the display unit 2, the instruction control lag circuit that makes control unit 12 produce according to operating unit 14a is adjusted the transmission time of signal of video signal, and then change in the position of display unit 2 output color signals, reach the effect that each color signal is shown synchronously gradually.
Special one carries, and real also can be designed to knockdown executive component when making operation unit 14a, for example comprise one in order to selecting the selected cell of different images signal, and another is in order to adjust the adjustment unit of transmission time number.But the reality of described operating unit is not limited to the above-mentioned way of example of mentioning as means, and the technical staff of the common knowledge of tool can produce various variations and design according to the function that purpose is set and will reaches of aforesaid operations unit in this area.
Referring again to Fig. 1, for instance, that supposes each signal of video signal v1, v2 and v3 can the delay scope be respectively 0 nanosecond (ns) to 60 nanoseconds, but the operational order that control unit 12 decision operation unit 14 produce, and control the delay number of seconds delay output that corresponding delay circuit makes signal of video signal calculate according to control unit 12 after the user operates.In other words, in this example, it to be separately initial transmission time that the transmission time of each signal of video signal is the shortest, does not also namely postpone the situation in transmission time; The longlyest then can be deferred to the initial transmission time and add output again after 60 nanoseconds.Can the delay scope be not limited to above-mentioned illustration, the postponed scope that does not also limit each signal of video signal must be identical.
In the present embodiment, control unit 12 is except prolonging the indication in specific image signal transmission time according to operational order, the control lag circuit is with outside the transmission time prolongation of transmission time than short signal of video signal, shorten when the transmission time of operational order indication with specific image signal, but the transmission time of the described signal of video signal that is instructed to is in the time of can't shortening, control unit 12 can further change into automatically with the transmission time prolongation of short signal of video signal of other transmission times, so as to reaching the effect that makes signal of video signal synchronous.
For instance, see also signal display position schematic diagram and the corresponding signal of video signal sequential chart of Fig. 4 B of Fig. 4 A.When the uncorrected signal of video signal v1 shown in Fig. 4 A was presented on the display unit 2 to v3, color signal 22 appeared at the right of color signal 24, and color signal 26 appears at the right of color signal 22.Hence one can see that, and the shortest person of three group image signal initial transmission times among Fig. 4 A is the second signal of video signal v2, and elder is the 3rd signal of video signal v3.When the user carries out adjustment (just allow three groups of adjustment that signal the is synchronous) program of delay compensation to above-mentioned three group image signals, can carry out synchronously at preceding two group image signal v2 and v1 earlier.For example, see through operation will postpone the second signal of video signal v2 in order to indication with generation corresponding to the operating unit (seeing also Fig. 2) of the second signal of video signal v2 operational order.The control unit of compensation arrangement (consulting Fig. 1) but analysis operation instruction and produce the first corresponding control command, in order to control second delay circuit 102 with the transmission time prolongation of the second signal of video signal v2, make the output time of the second signal of video signal v2 identical with the output time of the first signal of video signal v1.The user can utilize the display position of the color signal 22 that changes along with adjustment on the display unit 2 and 24 whether overlapping, judges whether signal of video signal v1 and v2 be synchronous.Certainly, the first signal of video signal v1 and the second signal of video signal v2 also can be via the controls of first control command, postpone to export to the identical very first time backward by first delay circuit 100 and second delay circuit 102 respectively, so that more near output time the 3rd signal of video signal v3 the latest, shown in Fig. 4 B.Among Fig. 4 B, the first signal of video signal v1 has postponed t1 nanosecond through first delay circuit 100, and second signal of video signal v2 postponed t2 after nanosecond through second delay circuit 102, transmission time is extended for very first time td1 simultaneously, also be signal of video signal v1 and v2 all after the time span of having transmitted very first time td1, output to display unit synchronously.
Then, the 3rd signal of video signal v3 among Fig. 4 A and synchronized signal of video signal v1 and v2 to be carried out when synchronous, the user may operate the operating unit corresponding to the 3rd signal of video signal v3, shorten the transmission time of the 3rd signal of video signal v3 to produce indication, the operational order that the 3rd signal of video signal v3 output time is done sth. in advance forward from the second time td2, and produce the second corresponding control command by control unit according to the indication of operational order, adjust the transmission time of signal of video signal so as to controlling suitable delay circuit.Yet, because the initial output time of the 3rd signal of video signal v3 is subject to its transmission range, signal of video signal v1 and v2 originally namely have been later than, and do not prolonged under the prerequisite in its transmission time by the 3rd delay circuit 104, the transmission time of the 3rd signal of video signal v3 can't be reduced from the second time td2 again, so when receiving above-mentioned operational order, and when judging the 3rd signal of video signal v3 and can't export in advance, second control command that control unit produces is then for controlling previous synchronous signal of video signal v1 and v2 in remaining postponed scope, prolong the transmission time (being the t3 nanosecond of prolongation shown in Fig. 4 B in this example) by first delay circuit 100 and second delay circuit 102 once again, till the output time of signal of video signal v1 and v2 is identical with the second time td2 of the 3rd signal of video signal v3 (being the initial transmission time of the 3rd signal of video signal v3 in this example).
By the judgement of control unit 12 and adjustment automatically, three group image signal v1 only need to adjust twice altogether to v3 at the most, just can reach the effect that three group image signals are exported all synchronously, need not change synchronous signal of video signal in order to cooperate still uncorrected signal of video signal, reduce the user repeatedly manipulation operation unit 14 with the number of times of manual adjustment signal of video signal.
Supplementary notes see also the signal of video signal time diagram shown in the signal of video signal schematic diagram shown in Fig. 5 A and Fig. 5 B.What Fig. 4 A and 4B were illustrated is the delay compensation means that last controlled signal of video signal is the longest signal of video signal of initial transmission time, and Fig. 5 A and 5B are then in order to illustrate that last controlled signal of video signal is the delay compensation means of the shortest signal of video signal of initial transmission time.Shown in Fig. 5 A, supposed three group image signals before not adjusting, the sequencing that outputs to display unit 2 is the 3rd signal of video signal v3, the first signal of video signal v1 and the second signal of video signal v2 in regular turn.See also Fig. 5 B, the control unit analysis is in order to adjust the operational order of the first signal of video signal v1 and the second signal of video signal v2, and produce the first corresponding control command and transmission time of signal of video signal v1 and v2 prolonged t1 nanosecond and t2 nanosecond respectively and behind the very first time of arrival td1, can be when receiving the operational order in the transmission time that prolongs the 3rd signal of video signal v3, the content of operational order by analysis, and prolong since the second time td2 can postponing the transmission time of scope inner control the 3rd delay circuit 104 with the 3rd signal of video signal v3, till transmission time of the 3rd signal of video signal v3 and signal of video signal v1 and v2 are all later very first time td1 (the coextensive t3 nanosecond of having grown shown in Fig. 5 B of the 3rd signal of video signal v3 in this example).
See also Fig. 6.What specify is, in the end a controlled signal of video signal (as the 3rd signal of video signal v3) is the longest signal of video signal of initial transmission time, and postponing t1 nanosecond and t2 signal of video signal v1 and the very first time td1 of v2 when having surpassed the initial transmission time (i.e. the second time td2) of described the 3rd signal of video signal v3 after nanosecond respectively according to first control command, the user can estimate the right side that color signal 22 and 24 be displaced to color signal 26 from display unit.At this moment, but user's operating operation unit and produce the operational order that indication prolonged for the 3rd signal of video signal v3 transmission time.When control unit receives the instruction of indicating the transmission time that prolongs the 3rd signal of video signal v3, judge the 3rd signal of video signal v3 and can be deferred to later very first time td1 from the second time td2 and export again, so that the 3rd signal of video signal v3 exports simultaneously with first, second signal of video signal v1 and v2 after adjusting; Or change the time of delay that is reduced signal of video signal v1 and v2 by control first delay circuit 100 and second delay circuit 102 respectively, extremely identical with the second time td2 of the 3rd signal of video signal v3 with the transmission time of v2 to shorten signal of video signal v1.In other words, can the 3rd signal of video signal v3 be postponed t3 nanosecond since the second time td2 by the 3rd delay circuit in this example, be extended for very first time td1 with the transmission time with the 3rd signal of video signal v3, or first and second signal of video signal v1 that can will have been postponed respectively by first and second delay circuit, the transmission time that v2 reduces t3 nanosecond respectively, make the transmission time of first and second signal of video signal v1, v2 foreshorten to the second time td2.Also can reach whereby and make the synchronized effect of three group image signals.
The described compensation arrangement 1 of present embodiment can be as shown in Figure 2 a separate equipment, the original device (as the video signal player) that connects signal of video signal via signal input connector 16, after the control of the control unit of inside and Postponement module was handled, the signal of video signal that can be exported synchronously by signal output connector 18 outputed to display unit 2 (as liquid crystal screen display) again.In addition, described compensation arrangement 1 also can for example be arranged on compensation arrangement 1 among video switcher (Video Switch), video distributor (Video Splitter), video extender (Video Extender), video matrix (Video Matrix) or the multimedia playing apparatus (Multimedia Player) for module in the various video image processing unit or assembly.
Please refer to the flow chart of a kind of signal of video signal delay compensation method embodiment shown in Figure 7, described compensation method can utilize compensation arrangement 1 as shown in Figure 1 to carry out, so please in the lump with reference to Fig. 1.
At first can with display unit 2 that compensation arrangement 1 is connected on, demonstrate the image frame of still exporting without a plurality of signal of video signal of overcorrect compensation (S701).Because a plurality of signal of video signal are sent to the transmission range difference of display unit 2 from signal source through holding wire, make that the initial transmission time of each signal of video signal is not necessarily identical, it is also inconsistent that signal arrives the priority of display unit 2.Therefore, when still a plurality of signal of video signal of proofreading and correct without overcompensation are presented on the display unit 2, the display position of each signal of video signal can produce difference, and the transmission time makes the later signal of video signal of output time will be displaced to the transmission time than the right side of short signal of video signal than length.
The user can be according to the position of signal of video signal shown on the display unit 2, learn the priority of the output time of described a plurality of signal of video signal, and operation compensation device 1 set operating unit 14 and produce the operational order of transmission time of one or more signal of video signal wherein being adjusted in order to indication (S703).Specifically, three knobs that described operating unit 14 can be as shown in Figure 2 correspond respectively to three signal of video signal, comprise the first signal of video signal v1, the second signal of video signal v2 and the 3rd signal of video signal v3.Suppose that the initial transmission time of the second signal of video signal v2 is longer than the first signal of video signal v1 in this example.The user can select to rotate the knob corresponding to the first signal of video signal v1, sees through the direction generation operational order that control handle rotates, and indication prolongs the transmission time of the first signal of video signal v1, to postpone the output time of the first signal of video signal v1.
But the control unit 12 that is connected in operating unit 14 receives the adjustment mode of the corresponding indication of analysis operation instruction institute behind the operational order for prolonging or reduce the degree (S705) of transmission time and prolongation or reduced time, and produce the first corresponding control command according to the indication that analyzes, in order to control the transmission (S707) of corresponding delay circuit delays signal of video signal, for example reduce the speed that signal transmits or increase stand-by period before signal outputs to display unit 2.Above-mentioned particular instantiation continues, control unit 12 can be according to the indication that prolonged for the first signal of video signal v1 transmission time in the operational order, and the amplitude that is rotated along with knob, control first delay circuit 100 of the corresponding first signal of video signal v1 in the transmission time that can postpone to increase gradually in the scope the first signal of video signal v1, to postpone the first signal of video signal v1 arrives at display unit 2 from signal source time.First delay circuit 100 postpones the effect of first signal of video signal v1 output, but immediate reaction is on the display unit 2 corresponding first signal of video signal v1 display positions, so the user can continue to give operational order according to the change in location of signal of video signal on display unit 2, postpone the output time of the first signal of video signal v1 up to first delay circuit 100 according to the control of control unit 12, make it with the second signal of video signal v2 till the output time on the display unit 2 is all the very first time.The very first time in this example can be the initial transmission time of the second signal of video signal v2.In other words, the display position of the first signal of video signal v1 can be overlapped in the display position of the second signal of video signal v2 after calibrated.
In the middle of other enforcement means, the user also can be simultaneously or individual operation correspond respectively to the knob of the first signal of video signal v1 and the second signal of video signal v2, make control unit 12 produce first control commands and control first delay circuit 100 and second delay circuit 102 all is deferred to the very first time with the transmission time of the first signal of video signal v1 and the second signal of video signal v2 respectively, the very first time of this moment then can be later than the initial transmission time of the second signal of video signal v2.In other words, outputing to the first signal of video signal v1 of display unit 2 and the display position of the second signal of video signal v2 in the very first time simultaneously through delay circuit delays respectively, is that the display position before proofreading and correct to the second signal of video signal v2 is offset to the right.
When first and second signal of video signal synchronously after, the user can produce another operational order at the 3rd signal of video signal v3 control operation unit 14 again, in order to indication with the output time of the 3rd signal of video signal v3 with proofreaied and correct after the output time of first and second signal of video signal carry out (S709) synchronously.Hold example, the rotatable knob corresponding to the 3rd signal of video signal v3 of user sees through the direction of rotation and amplitude and produces described operational order.
The initial transmission time before in this example the 3rd signal of video signal v3 does not proofread and correct of supposing is shorter than the very first time of the first signal of video signal v1 and the common output of the second signal of video signal v2, the operational order that the user produces namely can be the transmission time that indication prolongs the 3rd signal of video signal v3, make the output time of the 3rd signal of video signal v3 identical with the very first time, and the display position on the display unit 2 can be displaced to the right with adjust after the first signal of video signal v1 and the second signal of video signal v2 overlapping.Therefore, when in order to the operational order of adjusting the 3rd signal of video signal v3 not being the transmission time of indication shortening the 3rd signal of video signal v3 (result that step S711 judges is for denying), control unit 12 can produce second control command according to the indication of operational order, in order to the transmission time of control corresponding to the 3rd delay circuit 104 prolongations the 3rd signal of video signal v3 of the 3rd signal of video signal v3, be sent to the time (S713) of display unit 2 with delay control three signal of video signal v3.
In the process of the output time of controlling the 3rd delay circuit 104 delay controls three signal of video signal v3, whether the change of the display position of the signal of video signal that can go out according to immediate reaction on the display unit 2 judges the 3rd signal of video signal v3 by delay consistent with the output time of first and second signal of video signal that can export synchronously (S715).If the display position of display position and first, second signal of video signal of the 3rd signal of video signal v3 on display unit 2 is overlapping, the output time that namely represents three group image signals is unanimity, just all exports in the very first time; Otherwise when the display position of the 3rd signal of video signal v3 still had gap with the display position of first, second signal of video signal, the output time that then represents three group image signals was not synchronous as yet.If the output time of the 3rd signal of video signal v3 as yet not with very first time of first and second signal of video signal (being that the judged result of step S715 is not for) synchronously, then return the operational order that step S713 continuation produces according to user's control operation unit 14, and the output time of continuation delay control three signal of video signal v3, confirm the output time and first of the 3rd signal of video signal v3 up to the judged result of step S715, the output time of second signal of video signal is all (being that the judged result of step S715 is for being) till the very first time, so far finishes the correction (S717) to three group image signal output times.
Get back to step S711, suppose the display position of signal of video signal on the display unit 2 and know, the output time of the 3rd signal of video signal v3 in this example is later than the very first time after the first signal of video signal v1 and the second signal of video signal v2 correction, the operational order that the user produces namely can be the transmission time (being that the judged result of step S711 is for being) that the 3rd signal of video signal v3 is shortened in indication, make the output time of the 3rd signal of video signal v3 can be identical with the very first time, and the display position on the display unit 2 can be displaced to left with adjust after the first signal of video signal v1 and the second signal of video signal v2 overlapping.
When control unit 12 received the operational order that indication shortens transmission time of the 3rd signal of video signal v3, the transmission time that can judge the 3rd signal of video signal v3 was subject to transmission range and can't be reduced again.This moment, control unit 12 can produce second control command, change control first delay circuit 100 and second delay circuit 102 into, the first signal of video signal v1 that will before export synchronously and the transmission time of the second signal of video signal v2 prolong (S719) more respectively, just make output time from very first time delay backward again.
Whereby, no matter the initial transmission time of each signal of video signal is long or short, after the user once adjusts through 14 pairs of signal of video signal of operating unit, the control unit 12 of compensation arrangement 1 can be adjusted the time of delay of signal of video signal automatically again, so that all signal of video signal can both be on display unit output synchronously, so as to promoting the display quality of image.
According to the embodiment of the invention, above-mentioned signal of video signal delay compensation method and system can be after the user carry out the delay compensation operation of a signal of video signal, under the situation that the nonsynchronous problem of signal of video signal fails to eliminate fully, automatically perform adaptive adjustment, initiatively relativity ground compensation and proofreading and correct the last transmission time of each signal of video signal, allow the user repeatedly adjustment can promptly to eliminate signal of video signal asynchronous and reduce the problem of image output quality.
In addition, according to the embodiment of the invention, control unit can carry out that can batch processing reduce the transmission time to reach above-mentioned judgement signal of video signal, the control signal of video signal prolongs or the reduction transmission time, and judges whether the last output time of each signal of video signal is all the very first time or was all for second time and can consistently exports.Therefore described means do not need compensation arrangement additional configuration hardware components, do not increase the production cost of compensation arrangement and can be embedded in the middle of the various signal of video signal control products, can be made as independently compensation arrangement yet.
The above only is embodiments of the invention, and it is not in order to limit to claim of the present invention.
Claims (11)
1. signal of video signal delay compensation method, utilize control unit and Postponement module control different a plurality of signal of video signal of transmission time, these signal of video signal comprise first signal of video signal, second signal of video signal and the 3rd signal of video signal, it is characterized in that, this method comprises:
Accept first control command, postponing in the scope to prolong this first signal of video signal and this second signal of video signal transmission time of one of them at least, make the output time of this first signal of video signal and this second signal of video signal be all the very first time according to this first control command;
Accept operational order, this operational order prolongs or shortens output time in order to indication is the transmission time of the 3rd signal of video signal of second time, makes the output time of the 3rd signal of video signal identical with the output time of this first signal of video signal and this second signal of video signal;
Analyze this operational order and can the delay scope produce second control command according to this second time and this; And
According to this second control command, can postpone to adjust from this second time in the scope transmission time of the 3rd signal of video signal at this, make the output time of the 3rd signal of video signal identical with this very first time, or in this transmission time that can postpone to adjust from this very first time in the scope this first signal of video signal and this second signal of video signal, make the output time of this first signal of video signal and this second signal of video signal identical with this second time.
2. signal of video signal delay compensation method according to claim 1, it is characterized in that, when the transmission time of the 3rd signal of video signal is shortened in this operational order indication, this second control command is for prolonging transmission time of this first signal of video signal and this second signal of video signal from this very first time, to the output time of this first signal of video signal and this second signal of video signal be this second time.
3. signal of video signal delay compensation method according to claim 2, it is characterized in that, when this operational order indication prolongs the transmission time of the 3rd signal of video signal, this second control command is the transmission time from this second time lengthening the 3rd signal of video signal, output time to the 3rd signal of video signal is this very first time, or for shortening transmission time of this first signal of video signal and this second signal of video signal from this very first time, to the output time of this first signal of video signal and this second signal of video signal be this second time.
4. signal of video signal delay compensation method according to claim 3 is characterized in that, this second time is the initial output time of the 3rd signal of video signal.
5. signal of video signal delay compensation method according to claim 1 is characterized in that, more comprises before receiving this first control command:
Provide operating unit and display interface to adjust the output time of these signal of video signal for the user, wherein, this display interface shows the picture that these signal of video signal are exported according to corresponding output time respectively; Wherein, this operational order produces according to the operated result of this operating unit.
6. signal of video signal delay compensation means is characterized in that comprising:
A plurality of delay circuits, in order to control the different a plurality of signal of video signal of transmission time length, described signal of video signal comprises first signal of video signal, second signal of video signal and the 3rd signal of video signal, described delay circuit comprises first delay circuit of adjusting this first signal of video signal, second delay circuit of adjusting this second signal of video signal, and adjusts the 3rd delay circuit of the 3rd signal of video signal;
Control unit, produce first control command with control this first delay circuit and this second delay circuit prolong respectively this first signal of video signal and this second signal of video signal at least one of them transmission time to the very first time, and receive operational order with and produce second control command; And
Operating unit, corresponding these delay circuits produce this operational order in order to accept operation, and this operational order was shortened or is prolonged from second time in order to the transmission time of indication with the 3rd signal of video signal;
Wherein, this control unit is according to this second control command, adjust the transmission time of the 3rd signal of video signal from this second time, make the output time of the 3rd signal of video signal identical with this very first time, or adjust transmission time of this first signal of video signal and this second signal of video signal from this very first time, make the output time of this first signal of video signal and this second signal of video signal identical with this second time.
7. signal of video signal delay compensation means according to claim 6, it is characterized in that, when the transmission time of the 3rd signal of video signal was shortened in this operational order indication, this control unit produced this second control command and prolongs the transmission time of this first signal of video signal and this second signal of video signal respectively from this very first time to identical with this second time to control this first delay circuit and this second delay circuit.
8. signal of video signal delay compensation means according to claim 7, it is characterized in that, when this operational order indication prolongs the transmission time of the 3rd signal of video signal, this control unit produce this second control command with control the 3rd delay circuit from transmission time of this second time lengthening the 3rd signal of video signal to identical with this very first time, or produce this second control command and reduce the transmission time of this first signal of video signal and this second signal of video signal respectively from this very first time to identical with this second time to control this first delay circuit and this second delay circuit.
9. signal of video signal delay compensation means according to claim 8 is characterized in that, the initial transmission time that this second time is the 3rd signal of video signal.
10. signal of video signal delay compensation means according to claim 6 is characterized in that, this signal delay compensation arrangement is arranged among video switcher, video distributor, video extender, video matrix or the multimedia playing apparatus.
11. signal of video signal delay compensation means according to claim 6 is characterized in that, this operating unit is a plurality of knobs, a plurality of button or a plurality of switch.
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| CN105723698A (en) * | 2014-09-19 | 2016-06-29 | 华为技术有限公司 | Method and device for determining photographing delay time and photographing apparatus |
| TWI721375B (en) * | 2019-02-22 | 2021-03-11 | 友達光電股份有限公司 | Timing controller, display device and screen displaying method |
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| CN103248856B (en) | 2016-03-30 |
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