CN101150664A - Signal correction system and method - Google Patents
Signal correction system and method Download PDFInfo
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- CN101150664A CN101150664A CNA2006101278378A CN200610127837A CN101150664A CN 101150664 A CN101150664 A CN 101150664A CN A2006101278378 A CNA2006101278378 A CN A2006101278378A CN 200610127837 A CN200610127837 A CN 200610127837A CN 101150664 A CN101150664 A CN 101150664A
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Abstract
The invention provides a signal compensation system and a method, the signal compensation system comprises a signal sensor and a processing module. The signal sensor senses displacement data of a camera continuously to generate sensing signals. The processing module acquires a relative maximum and a relative minimum of sensing signals, and calculates an amount of absolute deviation according to the relative maximum and the relative minimum, wherein the amount of absolute deviation is an absolute value which is added by the relative maximum and the relative minimum. The processing module judges the amount of absolute deviation is whether or not more than an established value, if yes, decides sensing signals to drift, and compensates sensing signals according to the amount of absolute deviation. The invention can decides sensing signals whether or not to drift besides influence of device noise, and compensates sensing signals, improves the accuracy of the sensor.
Description
Technical field
The invention relates to a kind of signal correction system and method, and be particularly to a kind ofly can judge sensor whether drift about and the system and method for the revisal of being correlated with as the sensing signal of dip angle signal sensor.
Background technology
In recent years, because camera head, can be as the frivolous and captured digital photos that goes out of the volume of digital camera easily at relevant apparatus, as the characteristic of inspecting in the computer system and handling, digital camera has become one of necessary article in modern's life.
In all camera heads, all exist in the frivolous digital camera of the problem of setting about shaking, particularly volume.Because the stability of the hand-held digital camera of user is not enough, therefore, usually can be in the moment of pressing shutter, because shake or the finger application of force of tripping and caused the vibrations of camera of user's hand when gripping, thereby shoot fuzzy image.Therefore, the technology that provides anti-hand to shake usually in the general camera head.U.S. Pat 5,878,286 shake in the technology with the anti-hand of US 5,617,177, and an angular speed sensor can be set in the camera head usually, detect small moving as gyroscope (Gyro) sensor.The processor of camera head can calculate the displacement that needs compensation according to the data that detect, and sees through the compensation lens set, is compensated according to the jitter direction and the displacement of camera lens, thereby solves the vibration problem of camera.
Work as sensor, when continuing angle that the detecting camera head moves and change, can obtain showing the sensing signal of angular velocity varies, as shown in Figure 1 as the angular speed sensor.In Fig. 1, it is the string ripple variation of datum line with the O axle that the angular speed that detects (ω) is changed to one.Yet most of sensor all can have the effect of temperature drift to take place usually.Adopt for example, when ambient temperature changed, even sensor has identical setting, the sensing signal of its output also had deviation, thereby made sensor reduce the accuracy of detecting.Fig. 2 shows the sensing signal with temperature drift of angular speed sensor detecting.As shown in Figure 2, angular velocity varies that detects and O axle offset C, make the data deficiency accuracy detect.
Summary of the invention
In view of this, the invention provides signal correction system and method.
The invention provides a kind of signal correction system, comprise a sensor and a processing module.Sensor continues the mobile data of detecting one camera head, to produce sensing signal.Processing module obtains a relative maximum and a relative minimum of sensing signal, and calculates an absolute deviation amount according to relative maximum and relative minimum, and wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.Processing module judges that whether the absolute deviation amount is greater than a set value.If judge that sensing signal drifts about, and carry out revisal for sensing signal according to the absolute deviation amount.
Signal correction system of the present invention, wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.
Signal correction system of the present invention, wherein this processing module is more sampled for this sensing signal with a set frequency, thereby obtain a plurality of sensing value of this sensing signal, and should a plurality of sensing value compare, thereby obtain this relative maximum and this relative minimum.
Signal correction system of the present invention, wherein this processing module more judge after this relative maximum and this relative minimum addition whether be one on the occasion of, if this sensing signal is deducted this absolute deviation amount, with this sensing signal of revisal.
Signal correction system of the present invention, wherein whether this processing module is a negative value after more judging this relative maximum and this relative minimum addition, if this sensing signal is added this absolute deviation amount, with this sensing signal of revisal.
Signal correction system of the present invention, wherein this set value is the noise level in this camera head.
Signal correction system of the present invention, wherein this sensor is a dip angle signal sensor.
Signal correction system of the present invention, wherein this dip angle signal sensor is a gyroscope sensor (Gyro Sensor).
Signal correction system of the present invention, wherein this sensing signal is one of them of angle, angular speed or angular acceleration signal.
Signal correction system of the present invention, wherein this sensing signal is one of them of displacement, speed or acceleration signal.
The present invention also provides a kind of signal correction method.At first, obtain sensing signal, wherein sensing signal is the mobile data of a camera head, and obtains a relative maximum and a relative minimum of sensing signal.Calculate an absolute deviation amount according to relative maximum and relative minimum, wherein the absolute deviation amount is an absolute value of relative maximum and relative minimum addition.Afterwards, judge that whether the absolute deviation amount is greater than a set value.If judge that sensing signal drifts about, and carry out revisal for sensing signal according to the absolute deviation amount.
Signal correction method of the present invention, wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.
Signal correction method of the present invention more comprises the following steps: to sample for this sensing signal with a set frequency, thereby obtains a plurality of sensing value of this sensing signal; And should a plurality of sensing value compare, thereby obtain this relative maximum and this relative minimum.
Signal correction method of the present invention, more comprise the following steps: to judge after this relative maximum and this relative minimum addition whether be one on the occasion of; And if, this sensing signal is deducted this absolute deviation amount, with this sensing signal of revisal.
Signal correction method of the present invention, whether more comprise the following steps: to judge after this relative maximum and this relative minimum addition is a negative value; And if, this sensing signal is added this absolute deviation amount, with this sensing signal of revisal.
Signal correction method of the present invention, wherein this set value is the noise level in this camera head.
Signal correction method of the present invention, wherein this sensing signal is one of them of angle, angular speed or angular acceleration signal.
The present invention provides a kind of signal correction method in addition.At first, obtain sensing signal, and obtain a relative maximum and a relative minimum of sensing signal.Calculate an absolute deviation amount according to relative maximum and relative minimum, wherein the absolute deviation amount is an absolute value of relative maximum and relative minimum addition.Afterwards, judge that whether the absolute deviation amount is greater than a set value.If judge that sensing signal drifts about, and carry out revisal for sensing signal according to the absolute deviation amount.
Signal correction method of the present invention, wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.
The present invention provides a kind of signal correction system in addition, comprising: a signal sensing device, in order to continue the data of detecting one camera head amount of movement, to produce sensing signal; An and processing module, obtain a relative maximum and a relative minimum of sensing signal, and calculate an absolute deviation amount according to relative maximum and relative minimum, wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.Processing module judges that whether the absolute deviation amount is greater than a set value.If judge that sensing signal drifts about, and carry out revisal for sensing signal according to the absolute deviation amount.
Said method of the present invention can see through the procedure code mode and include in tangible media.When procedure code was written into and carries out by machine, machine became in order to carry out device of the present invention.
Signal correction system of the present invention and method can be judged whether sensing signal drifts about, and be carried out revisal for sensing signal outside the influence of system noise, thereby improve the accuracy of sensor.
Description of drawings
Fig. 1 is that a schematic diagram is the sensing signal that shows the detecting of angular speed sensor.
Fig. 2 is that a schematic diagram is the sensing signal with temperature drift that shows the detecting of angular speed sensor.
Fig. 3 is that a schematic diagram is the signal correction system that shows according to the embodiment of the invention.
Fig. 4 is that a flow chart is the sensing signal method of sampling that shows according to the embodiment of the invention.
Fig. 5 is that a schematic diagram is the sensing value sampling that shows according to the embodiment of the invention.
Fig. 6 is that a flow chart is the signal correction method that shows according to the embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, embodiment cited below particularly, and cooperate appended diagram, be described in detail as follows.
Fig. 3 shows the signal correction system according to the embodiment of the invention.
A noise level of setting signal correcting system 300 inside (Noise Level) in advance in the processing module 320.Processing module 320 receives sensing signal by sensor 310, and sample for sensing signal with a set frequency, thereby obtain a plurality of sensing value of sensing signal, and each sensing value is compared, thereby obtain relative maximum and relative minimum in the sensing value.Processing module 320 can judge whether sensing signal drifts about according to relative maximum in noise level and the sensing value and relative minimum, and carries out revisal for sensing signal.The details of processing module 320 will in after describe.
Fig. 4 shows the sensing signal method of sampling according to the embodiment of the invention.
As step S410, the angular speed sensor continues the angle delta data that the detecting camera head moves, to produce sensing signal.As step S420, sample for sensing signal with set frequency, thereby obtain sensing signal in a plurality of sensing value of different mining sampling point, each dotted line that wherein shows among Fig. 5 is represented each sampled point respectively.As step S430, the sensing value of each sampled point is compared, thereby obtain relative maximum and relative minimum in the sensing value.
Fig. 6 shows the signal correction method according to the embodiment of the invention.Please also refer to Fig. 5 and Fig. 6, the signal correction method of the embodiment of the invention will be illustrated in down.
As step S610, calculate an absolute deviation amount according to relative maximum in the sensing value and relative minimum.Wherein, the absolute deviation amount is an absolute value of relative maximum and relative minimum addition.The formula that calculates the absolute deviation amount is as follows:
2Δ＝|(Peak?V)+(Deep?V)|，
Wherein, Δ is the absolute deviation amount, and Peak V is the relative maximum in the sensing value, and Deep V is the relative minimum in the sensing value.
As step S620, judge that whether the absolute deviation amount is greater than a set value, as the noise level of signal correction system inside.If the absolute deviation amount not greater than noise level, judges that then sensing signal is not offset, and process ends.If the absolute deviation amount is greater than noise level, as step S630, judge that sensing signal drifts about, and as step S640, judge after relative maximum and the relative minimum addition whether be on the occasion of.If after relative maximum and the relative minimum addition be on the occasion of, as step S650, sensing signal (sensing value) is deducted the absolute deviation amount, with revisal sensing signal (sensing value).If after relative maximum and the relative minimum addition is negative value, as step S660, sensing signal (sensing value) is added the absolute deviation amount, with revisal sensing signal (sensing value).
Therefore, the present invention can judge whether sensing signal drifts about, and carry out revisal for sensing signal outside the influence of system noise, thereby improves the accuracy of sensor.
Method of the present invention, or specific kenel or its part, can be contained in tangible media with the kenel of procedure code, get (as embodied on computer readable) storage medium as floppy disk, discs, hard disk or any other machine readable, wherein, when procedure code by machine, when being written into and carrying out as computer, this machine becomes in order to participate in device of the present invention.Method and apparatus of the present invention also can see through some transmission mediums with the procedure code kenel, transmit as electric wire or cable, optical fiber or any transmission kenel, wherein, when procedure code by machine, as the computer reception, when being written into and carrying out, this machine becomes in order to participate in device of the present invention.When the general service processor is done in fact, the procedure code associative processor provides a class of operation to be similar to the unique apparatus of using particular logic circuit.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
ω: angular speed C: drift
300: signal correction system
310: sensor
320: processing module
S410, S420, S430: step
Δ: absolute deviation amount
Peak V: relative maximum
Deep V: relative minimum
S610, S620 ..., S660: step.
Claims (11)
1. a signal correction system is characterized in that, described signal correction system comprises:
One sensor is in order to continue the data of detecting one camera head amount of movement, to produce sensing signal; And
One processing module, obtain a relative maximum and a relative minimum of this sensing signal, calculate an absolute deviation amount according to this relative maximum and this relative minimum, judge that whether this absolute deviation amount is greater than a set value, if, judge that this sensing signal drifts about, and carry out revisal for this sensing signal according to this absolute deviation amount.
2. signal correction system according to claim 1 is characterized in that, this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.
3. signal correction system according to claim 1, it is characterized in that, this processing module is more sampled for this sensing signal with a set frequency, thereby obtain a plurality of sensing value of this sensing signal, and should a plurality of sensing value compare, thereby obtain this relative maximum and this relative minimum.
4. signal correction system according to claim 1 is characterized in that, this processing module more judge after this relative maximum and this relative minimum addition whether be one on the occasion of, if this sensing signal is deducted this absolute deviation amount, with this sensing signal of revisal.
5. signal correction system according to claim 1 is characterized in that, whether this processing module is a negative value after more judging this relative maximum and this relative minimum addition, if this sensing signal is added this absolute deviation amount, with this sensing signal of revisal.
6. signal correction system according to claim 1 is characterized in that, this set value is the noise level in this camera head.
7. signal correction system according to claim 1 is characterized in that, this sensor is a dip angle signal sensor.
8. signal correction system according to claim 7 is characterized in that, this dip angle signal sensor is a gyroscope sensor.
9. signal correction system according to claim 1 is characterized in that, this sensing signal is one of them of angle, angular speed or angular acceleration signal.
10. signal correction system according to claim 1 is characterized in that, this sensing signal is one of them of displacement, speed or acceleration signal.
11. a signal correction system is characterized in that, described signal correction system comprises:
One signal sensing device is in order to continue the data of detecting one camera head amount of movement, to produce sensing signal; And
One processing module obtains a relative maximum and a relative minimum of sensing signal, and calculates an absolute deviation amount according to relative maximum and relative minimum, and wherein this absolute deviation amount is an absolute value of this relative maximum and this relative minimum addition.Processing module judges that whether the absolute deviation amount is greater than a set value.If judge that sensing signal drifts about, and carry out revisal for sensing signal according to the absolute deviation amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101278378A CN101150664A (en) | 2006-09-22 | 2006-09-22 | Signal correction system and method |
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| CNA2006101278378A CN101150664A (en) | 2006-09-22 | 2006-09-22 | Signal correction system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809873A (en) * | 2011-06-02 | 2012-12-05 | 思考电机（上海）有限公司 | Autofocus camera and camera-equipped mobile terminal |
| CN112216309A (en) * | 2015-04-29 | 2021-01-12 | 通腾科技股份有限公司 | Data processing system |
-
2006
- 2006-09-22 CN CNA2006101278378A patent/CN101150664A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809873A (en) * | 2011-06-02 | 2012-12-05 | 思考电机（上海）有限公司 | Autofocus camera and camera-equipped mobile terminal |
| CN102809873B (en) * | 2011-06-02 | 2016-02-24 | 新思考电机有限公司 | The mobile terminal of auto-focus camera and having camera |
| CN112216309A (en) * | 2015-04-29 | 2021-01-12 | 通腾科技股份有限公司 | Data processing system |
| CN112216309B (en) * | 2015-04-29 | 2022-03-15 | 通腾科技股份有限公司 | Data processing system |
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