CN1205587C - CCD image pick-up device and method for speeding up iamge pick-up - Google Patents

CCD image pick-up device and method for speeding up iamge pick-up Download PDF

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CN1205587C
CN1205587C CN 00106442 CN00106442A CN1205587C CN 1205587 C CN1205587 C CN 1205587C CN 00106442 CN00106442 CN 00106442 CN 00106442 A CN00106442 A CN 00106442A CN 1205587 C CN1205587 C CN 1205587C
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electrode
deposit unit
unit
pulse signal
clock pulse
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CN1317762A (en
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陈琰成
吴永川
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Avision Inc
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Avision Inc
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Abstract

The present invention relates to a method for speeding up image detection, and a CCD image detection device using the method. The CCD image detection device can detect images again to speeding up processing without moving residual charge packets.

Description

The method of charge coupled cell image detection device and acceleration detection image
Technical field
The present invention relates to the method for ccd image pick-up unit and acceleration detection image thereof.
Background technology
Owing to use charge coupled cell (Charge-Coupled Device abbreviates CCD as) can make shift register or the order tank that obtains very high density, so CCD is widely used in image processing system and the digital information processing system.For example, at scanner, digital camera, facsimile recorder, photoprinter ... in electronic installation, all must use the ccd image pick-up unit.
With regard to conventional scanners or the scanner of use CIS (Contact Image Sensor), its image detection processing section all may use the ccd image pick-up unit.Fig. 1 shows the synoptic diagram of ccd image pick-up unit inner structure for summary.The normal CCD image detection device comprises at least: row (row) image sensing unit (P 1～P n), in order to detected image and produce the charge packet (charge packets) of corresponding light intensity size; One CCD analogue shift register 10 has a plurality of temporary storage location (SH 1～SH 2n), in order to reception arranged side by side, deposit above-mentioned induced electricity pocket; And an output amplifier (OP) is in order to charge conversion to be corresponding voltage level V ImWherein, above-mentioned CCD analogue shift register 20 is by clock pulse signal Φ 1, Φ 2Control, and in regular turn the electric charge tandem of being deposited in each deposit unit is exported to above-mentioned output amplifier (OP).
Fig. 2 (a)～(f) shows in the CCD analogue shift register shown in Figure 1, deposits the transfer situation synoptic diagram of charge packet, and clock pulse signal Φ 1, Φ 2Waveform; Wherein, above-mentioned clock pulse signal Φ 1, Φ 2Be coupled to displacement control electrode G respectively 2a-1And G 2a(1≤a≤n).
The structure of ccd register for illustrating for simplicity, only shows 5 deposit unit (SH at this shown in Fig. 2 (a) 1～SH 5) and 5 corresponding displacement control electrode (G 1～G 5).In addition, given threshold voltage (Threshold voltage) is 0.
Work as t=t 1The time, Φ 1=0 and Φ 2So=V is electrode G 1, G 3And G 5The below does not produce potential barrier (potential barrier), but at electrode G 2And G 4The below forms stepped appearance barrier potential (stepbarrier), shown in Fig. 2 (b).Suppose electrode G 2And G 4The electric charge (being represented by dotted lines) of representing logical one has been deposited in the below.
Work as t=t 2The time, Φ 1=Φ 2=V/2, each electrode (G at this moment 1～G 5) profile of barrier Distribution of below is of similar shape, shown in Fig. 2 (c).Arrow on the profile diagram represents to work as the time from t 1Toward t 2And t 3During increase, odd electrode (G 1, G 3, G 5) potential barrier of below raises and even electrode (G 2, G 4) potential barrier of below descends.
At t=t 3The time, the current potential profile shown in Fig. 2 (d) appears.Therefore, there is G 2And G 4The electric charge of electrode below just is transferred to G respectively 1And G 3The below of electrode position.
At last, work as t=t 4The time, Φ 1=V and Φ 2=0, the result i.e. electrical potential energy distribution profile shown in Fig. 2 (e).By t 1To t 4During this, the electric charge electrode that moves right; In like manner, t 5To t 6With work as t 7To t 8During, all have the move right situation of an electrode of electric charge and produce.
The resolution specification of current scanline device mostly is 600dpi (dot/inch) or higher greatly; With the 600dpi resolution, file (wide 21cm with scan A 4 sizes, long 29.7cm) is example, in the employed ccd image pick-up unit of scanner, at least (29.7/2.54 * 600) the image sensing unit that needs there are 7016 approximately, and the individual deposit unit in 14032 (7016 * 2) is in order to the induced charge of reception arranged side by side, memory image.
The CCD pick-up unit that just present manufacturer is provided, the specification of its each standardized product generally includes the image sensing unit more than 10000.With the CCD pick-up unit standard items with 12800 image sensing unit is that example (promptly has SH 1～SH 25600Totally 25600 deposit units), be applied to the A4 size, in the scanner of resolution 600dpi, deposit unit SH only arranged then 1～SH 14032The induced electricity pocket that receives, stores is veritably corresponding to the image of scanning, and other deposit units SH 14033～SH 25600To correspond to any sensed image signal never, have only slightly because of light leak or residual charge bag that other factors produced can present in each scanning induction, yet these residual charges there is no the scan image of real correspondence.
According to the described traditional approach of Fig. 2 (a)～(e) electric charge in the deposit unit is given tandem output in regular turn and is converted to corresponding voltage; As deposit unit SH 1～SH 14032Electric charge finish output after; Register cell SH 14033～SH 25600In the residual charge bag also respectively to output terminal (being output amplifier OP) displacement 14032 deposit units, and be deposited at original SH 1～SH 11568On the position of deposit unit.For migration deposit unit SH 1～SH 11568In residual charge, then must expend extra time.Being about to 11568 residual charge bags earlier gives tandem output one by one.Otherwise, again scanning down set of diagrams as the time, above-mentioned 11568 residual charges will be added to deposit unit SH respectively 1～SH 11568On the new image sensing electric charge that receives, and cause scanner distorsion.
Each time after the image scanning, deposit unit SH 14033～SH 25600In the residual charge bag, for handling of scan image, but, must use the extra time that 11568 residual charge bags are exported again for fear of causing scanner distorsion completely without effect, so cause the waste in processing time, also reduce the processing speed of scanner.In order to reduce the time of handling the residual charge bag.Present employed solution is when 11568 residual charge bags are shifted out the CCD analogue shift register, with signal Phi 1And Φ 2Frequency improve, to quicken the action of shifting out with the residual charge bag.Yet, shifting out deposit unit SH 1～SH 14032Electric charge the time, signal Phi 1And Φ 2Be to operate with normal frequency; When shifting out the residual charge bag, again must be with signal Phi 1And Φ 2Switch to high-frequency, so can cause difficulty in the control, and increase the complexity of circuit, relative cost also increases, and in fact processing time that can reduce neither be a lot.Therefore, if can propose a kind of method and mechanism, make the CCD analogue shift register not need above-mentioned residual charge bag is shifted out one by one, and the problem that can make scan image not have distortion produces, so the time (that is processing time of accelerated scan device) that not only can quicken image detection, the while also can be reduced the complexity of circuit.
Summary of the invention
In view of this, a purpose of the present invention need not be shifted out residual charge packet the ccd image pick-up unit for proposing a kind of method of acceleration detection image, i.e. detected image and then acceleration processing speed once more.
According to an aspect of the present invention, provide a kind of ccd image pick-up unit, comprising: a plurality of image sensings unit (P 1～P n), in order to respond to light respectively and to produce the charge packet that in contrast to light intensity; The CCD shift register comprises: a plurality of deposit units: the first deposit unit (SH 1)～2n deposit unit (SH 2n), in order to deposit described charge packet, the first deposit unit (SH wherein 1)～2j-2 deposit unit (SH 2j-2), j＜n) is in fact corresponding to the deposit unit of an image to be detected; And correspond respectively to described a plurality of deposit unit: the first deposit unit (SH 1)～2n deposit unit (SH 2n) the first electrode (G of a plurality of displacement control electrodes 1)～2n electrode (G 2n); First electrode (the G of described displacement control electrode 1), third electrode (G 3), the 5th electrode (G 5) ... 2j-5 electrode (G 2j-5), 2j-3 electrode (G 2j-3) all couple first clock pulse signal; Second electrode (the G of described displacement control electrode 2), the 4th electrode (G 4), the 6th electrode (G 6) ... 2j-4 electrode (G 2j-4), 2j-2 electrode (G 2j-2) all couple the second clock pulse signal; By the control of described first, second clock pulse signal, make the described first deposit unit (SH 1)～2j-2 deposit unit (SH 2j-2) in described charge packet in order by shifting out in the described CCD shift register; Wherein, the 2j-2 electrode (G in described a plurality of displacement control electrode 2j-2), 2j electrode (G 2j) control electrode couples first current potential, and second current potential respectively, makes the 2j-2 deposit unit (SH in described a plurality of deposit unit 2j-2), 2j deposit unit (SH 2j) constitute blocker unit, make described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the charge packet deposited can not move into the described first deposit unit (SH 1)～2j-2 deposit unit (SH 2j-2) in.
According to another aspect of the present invention, provide a kind of acceleration detection image method that is used for the described ccd image pick-up unit of claim 1; Comprise: with in described a plurality of displacement control electrodes 2j-1 electrode (G 2j-1), 2j electrode (G 2j) control electrode couples first current potential, and second current potential respectively, makes the 2j-1 deposit unit (SH in described a plurality of deposit unit 2j-1), 2j deposit unit (SH 2j) the formation blocker unit; First electrode (the G with described displacement control electrode 1), third electrode (G 3), the 5th electrode (G 5) ... 2j-5 electrode (G 2j-5), 2j-3 electrode (G 2j-3) all couple first clock pulse signal; Second electrode (the G with described displacement control electrode 2), the 4th electrode (G 4), the 6th electrode (G 6) ... 2j-4 electrode (G 2j-4), 2j-2 electrode (G 2j-2) all couple the second clock pulse signal; Make described a plurality of image sensings unit (P 1～P n) sensed image and produce the charge packet in contrast to light intensity respectively; Described charge packet is deposited at described a plurality of deposit unit: the first deposit unit (SH 1)～2n deposit unit (SH 2n); Under the control of described first, second clock pulse signal, make the described first deposit unit (SH 1)～2j-2 deposit unit (SH 2j-2) in described charge packet in order by shifting out in the described CCD shift register; Wherein, described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the charge packet deposited, can not move into the described first deposit unit (SH by the effect of described blocker unit 1)～2j-2 deposit unit (SH 2j-2) in, so need not be with described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the charge packet deposited shifted out, described ccd image pick-up unit i.e. detected image once more; Make described a plurality of image sensings unit (P again 1～P n) sensed image and produce and in contrast to the charge packet of light intensity respectively, and repeat the described step of charge packet being deposited and shifted out described CCD shift register.
The ccd image pick-up unit that the inventive method is suitable for comprises: a plurality of image sensings unit (P 1～P n); And, by a plurality of deposit unit (SH 1～SH 2n) and a plurality of displacement control electrode (G 1～G 2n) the CCD shift register that constitutes; Described method comprises the steps:
(a) suppose deposit unit SH 1～SH 2j-2For in fact corresponding to the deposit unit of scan image, then can be with the G in described a plurality of displacement control electrodes 2j-1, G 2jControl electrode couples first current potential respectively, reaches second current potential, makes the SH in described a plurality of deposit unit 2j-1, SH 2jDeposit unit constitutes blocker unit; J＜n wherein;
(b) with the odd electrode G of described displacement control electrode 1, G 3, G 5G 2j-5, G 2j-3All couple first clock pulse signal;
(c) with the even electrode G of described displacement control electrode 2, G 4, G 6G 2j-4, G 2j-2All couple the second clock pulse signal;
(d) modern described a plurality of image sensings unit (P 1～P n) sensed image and produce the charge packet in contrast to light intensity respectively;
(f) described charge packet is deposited at described a plurality of deposit unit (SH 1～SH 2n);
(g) under the control of described first, second clock pulse signal, make described deposit unit SH 1～SH 2j-2In described charge packet in order by shifting out in the described CCD shift register; Wherein, described deposit unit SH 2j+1～SH 2nIn the residual charge bag deposited because the effect of described blocker unit and can not move into described deposit unit (SH 1～SH 2j-2) in;
(h) make described a plurality of image sensings unit (P again 1～P n) sensed image and produce the charge packet in contrast to light intensity respectively, and repeat the step that above-mentioned steps (d)～(g) is deposited charge packet and shift out described CCD shift register.
Based on the method for described acceleration detection image, another object of the present invention is the ccd image pick-up unit that proposes a kind of novelty, have the processing speed that is better than traditional C CD image detection device.
Ccd image pick-up unit of the present invention comprises: a plurality of image sensings unit (P 1～P n), in order to respond to light respectively and to produce the charge packet that in contrast to light intensity; And, the CCD shift register.
Above-mentioned CCD shift register comprises: a plurality of deposit unit (SH 1～SH 2n), in order to deposit described charge packet; And, a plurality of displacement control electrode (G 1～G 2n).The G of described displacement control electrode 1, G 3, G 5G 2j-5, G 2j-3All couple first clock pulse signal, the G of described displacement control electrode 2, G 4, G 6G 2j-4, G 2j-2All couple the second clock pulse signal; By the control of described first, second clock pulse signal, make above-mentioned deposit unit (SH 1～SH 2j-2) in described charge packet in order by shifting out in the described CCD shift register.
Wherein, the G in described a plurality of displacement control electrode 2j-1, G 2jControl electrode couples first current potential respectively, reaches second current potential, makes the SH in described a plurality of deposit unit 2j-1, SH 2jDeposit unit constitutes blocker unit, makes described deposit unit SH 2j+1～SH 2nIn the charge packet deposited can not move into described deposit unit (SH 1～SH 2j-2) in; J＜n.
Described first clock pulse signal and second clock pulse signal are complementary signal each other.The voltage of described first current potential is less than the voltage of second current potential.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described below in detail:
Fig. 1 summary shows the synoptic diagram of ccd image pick-up unit inner structure;
In Fig. 2 (a)～(e) summary displayed map 1, the synoptic diagram of the electric charge of CCD analogue shift register of the present invention transfer situation;
Fig. 2 (f) is read clock pulse signal Φ 1, Φ 2Oscillogram;
Fig. 3 shows the synoptic diagram of ccd image pick-up unit inner structure of the present invention;
Fig. 4 (a)～(e) summary shows the synoptic diagram of the electric charge transfer situation of CCD analogue shift register of the present invention.
Embodiment
Fig. 3 shows the synoptic diagram of ccd image pick-up unit inner structure of the present invention.With reference to Fig. 3, ccd image pick-up unit of the present invention comprises: a plurality of image sensings unit (P 1～P n), in order to respond to light respectively and to produce the charge packet that in contrast to light intensity; CCD shift register 30 comprises: a plurality of deposit unit (SH 1～SH 2n), in order to deposit described charge packet; A plurality of displacement control electrode (G 1～G 2n); And, output amplifier (OP).
The odd electrode G of described displacement control electrode 1, G 3, G 5G 2j-5, G 2j-3All couple the first clock pulse signal Φ 1, the even electrode G of described displacement control electrode 2, G 4, G 6G 2j-4, G 2j-2All couple second clock pulse signal Φ 2Described displacement control electrode G 2j+1, G 2j+3... G 2n-3, G 2n-1Also can couple the first clock pulse signal Φ 1, the G of described displacement control electrode 2j+2, G 2j+4... G 2n-2, G 2nAlso can couple second clock pulse signal Φ 2Described first, second clock pulse signal (Φ 1, Φ 2) waveform shown in Fig. 2 (f).
G in described a plurality of displacement control electrode 2j-1, G 2jControl electrode couples the first current potential V respectively 1, and the second current potential V 2, make SH 2j-1, SH 2jDeposit unit constitutes blocker unit.
By described first, second clock pulse signal (Φ 1, Φ 2) control, make described deposit unit (SH 1～SH 2j-2) in described charge packet in order by shifting out to described output amplifier OP in the described CCD shift register.Yet, described deposit unit SH 2j+1～SH 2nIn the charge packet deposited because the effect of described blocker unit, so can not move into above-mentioned deposit unit (SH 1～SH 2j+2) in.
With resolution 600dpi (dot/inch) is example, (j-1) the image sensing unit that in the employed ccd image pick-up unit, needs there are 7016 approximately at least, that is 14032 deposit units.So when making has the CCD pick-up unit standard items of 12800 (n) image sensing unit, promptly can select the control electrode G that to be shifted 14033And G 14034(G 2j-1, G 2j) couple the first current potential V respectively 1(voltage 0) and the 2nd current potential V2 (positive voltage V) are to form blocker unit.So, deposit unit SH 1～SH 14032In charge packet, can be by the first clock pulse signal Φ 1With second clock pulse signal Φ 2Control and shift out CCD shift register 30, yet SH 14035～SH 25600In residual charge can not be moved into deposit unit SH 1～SH 14032In.
Fig. 4 (a)-(e) summary shows the synoptic diagram of the electric charge transfer situation of CCD analogue shift register of the present invention.Fig. 4 (a)-(e) only illustrates the deposit unit and the displacement control electrode of part.
The method of acceleration detection image of the present invention can allow the ccd image pick-up unit residual charge packet need not be shifted out, i.e. detected image and then quicken processing speed once more.With reference to Fig. 3,4 (a)-(e), the method for described acceleration detection image may further comprise the steps.
At first, with the G in described a plurality of displacement control electrodes 14033, G 14034(be G 2j-1, G 2jJ=7017) control electrode couples the first current potential V respectively 1(voltage 0), and the second current potential V 2(positive voltage V) makes the SH in described a plurality of deposit unit 14033, SH 14034(be SH 2j-1, SH 2j) deposit unit formation blocker unit.
G with described displacement control electrode 1, G 3, G 5G 14029, G 14031(G 2j-5, G 2j-3) couple the first clock pulse signal Φ 1And, with the G of described displacement control electrode 2, G 4, G 6G 140302, G 14032(G 2j-4, G 2j-2) all couple second clock pulse signal Φ 2Shown in Fig. 4 (a).
Method of the present invention mainly is suitable for the ccd image pick-up unit with structure shown in Figure 3.In this embodiment, described displacement control electrode G 14035, G 14037～G 25599Also can select to couple the first clock pulse signal Φ 1And described displacement control electrode G 14036, G 14038～G 25600Also can select to couple second clock pulse signal Φ 2
When ccd image pick-up unit detected image, described a plurality of image sensings unit (P 1～P 12800) produce the charge packet (being represented by dotted lines) in contrast to light intensity respectively; And be deposited at coupling respectively and count (SH in the deposit unit 2jJ=1～12800), shown in Fig. 4 (b).Be stored in SH 14033Charge packet before is correct image sensing electric charge, is stored in SH 14033Charge packet afterwards then is a residual charge.
At described first, second clock pulse signal Φ 1, Φ 2Control under, described deposit unit SH 1～SH 14032In described charge packet in order by shifting out in the described CCD shift register 30; Detailed process is as mentioned below.
Work as t=t 1The time, Φ 1=0 and Φ 2So=V is odd electrode G 14029～G 14037The below does not produce potential barrier (potential barrier), but at even electrode G 14028～G 14036The below forms stepped appearance barrier potential (step barrier), shown in Fig. 4 (b).Suppose at even electrode G 14028～G 14036The electric charge (being represented by dotted lines) of representing logical one has been deposited in the below.
Work as t=t 2The time, Φ 1=Φ 2=V/2, this moment is except electrode G 14033And G 14034Outside, each electrode (G 1～G 25600) profile of barrier Distribution of below is of similar shape, shown in Fig. 4 (c).Arrow on the profile diagram represents to work as the time from t 1To t 2And t 3During increase, odd electrode (G 14029, G 14031Deng) potential barrier of below raises and even electrode (G 14030, G 14032Deng) potential barrier of below descends.
At t=t 3The time, Φ 1=3V/4, Φ 2Current potential profile shown in Fig. 4 (d) appears in=V/4.Therefore, there is G 14030And G 14032The electric charge of electrode below just is transferred to G respectively 14029And G 14031The below of electrode position.
At last, work as t=t 4The time, Φ 1=V and Φ 2=0, the result i.e. electrical potential energy distribution profile shown in Fig. 4 (e).By t 1To t 4During this, the electric charge electrode that moves right; In like manner, t 5To t 6With work as t 7To t 8During, all have the move right situation of an electrode of electric charge and produce.According to this mode, be stored in SH 14033Charge packet before can be moved out of CCD shift register 30 one by one; And be stored in SH 14033Residual charge afterwards is because at electrode G 14033And G 14034The potential barrier of below can be along with first, second clock pulse signal Φ 1, Φ 2Change, so can not be moved into SH 14033In the deposit unit before.
When all are stored in deposit unit SH 14033Charge packet before shifts out after the described CCD shift register 30 fully, even above-mentioned a plurality of image sensings unit (P 1～P n) sensed image also produces the charge packet that in contrast to light intensity respectively again, and repeating said steps is deposited charge packet and shift out the step of described CCD shift register 30.
The method that proposes by the present invention as can be known, when all are stored in deposit unit SH 14033Charge packet before shifts out after the described CCD shift register 30, and the ccd image pick-up unit of using above-mentioned accelerated method promptly can carry out image scanning again; Yet traditional C CD image detection device still must shift out residual charge packet the CCD shift register, so the ccd image pick-up unit that the treatment effeciency of traditional C CD image detection device proposes far below the present invention.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention; For example, the present invention adjusts the signal waveform that change energy component level is built, and is not limited to the signal waveform that proposes among the described embodiment.So, any those skilled in the art, without departing from the spirit and scope of the present invention, when can doing a little change and retouching, thus protection scope of the present invention should with the claim scope the person of being defined be as the criterion.

Claims (10)

1. ccd image pick-up unit comprises:
A plurality of image sensings unit (P 1～P n), in order to respond to light respectively and to produce the charge packet that in contrast to light intensity;
The CCD shift register comprises: a plurality of deposit units: the first deposit unit (SH 1)～2n deposit unit (SH 2n), in order to deposit described charge packet, the first deposit unit (SH wherein 1)～2j-2 deposit unit (SH 2j-2), j＜n is in fact corresponding to the deposit unit of an image to be detected; And correspond respectively to described a plurality of deposit unit: the first deposit unit (SH 1)～2n deposit unit (SH 2n) the first electrode (G of a plurality of displacement control electrodes 1)～2n electrode (G 2n); First electrode (the G of described displacement control electrode 1), third electrode (G 3), the 5th electrode (G 5) ... 2j-5 electrode (G2 J-5), 2j-3 electrode (G 2j-3) all couple first clock pulse signal; Second electrode (the G of described displacement control electrode 2), the 4th electrode (G 4), the 6th electrode (G 6) ... 2j-4 electrode (G 2j-4), 2j-2 electrode (G 2j-2) all couple the second clock pulse signal; By the control of described first, second clock pulse signal, make the described first deposit unit (SH 1)～2j-2 deposit unit (SH 2j-2) in described charge packet in order by shifting out in the described CCD shift register;
Wherein, the 2j-2 electrode (G2 in described a plurality of displacement control electrode J-2), 2j electrode (G 2j) control electrode couples first current potential, and second current potential respectively, makes the 2j-2 deposit unit (SH in described a plurality of deposit unit 2j-2), 2j deposit unit (SH 2j) constitute blocker unit, make described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the charge packet deposited can not move into the described first deposit unit (SH 1)～2j-2 deposit unit (SH 2j-2) in.
2. device as claimed in claim 1, wherein, described first clock pulse signal and described second clock pulse signal are complementary signal each other.
3. device as claimed in claim 1, wherein, the voltage of described first current potential is less than the voltage of described second current potential.
4. device as claimed in claim 3, wherein, the voltage of described first current potential is 0, the voltage of above-mentioned second current potential is positive voltage.
5. device as claimed in claim 1, wherein, the 2j+1 electrode (G of described displacement control electrode 2j+1), 2j+3 electrode (G 2j+3) ... 2n-1 electrode (G 2n-1) couple described first clock pulse signal, the 2j+2 electrode (G of described displacement control electrode 2j+2), 2j+4 electrode (G 2j+4) ... 2n electrode (G 2n) couple described second clock pulse signal.
6. acceleration detection image method that is used for the described ccd image pick-up unit of claim 1; Comprise:
With in described a plurality of displacement control electrodes 2j-1 electrode (G 2j-1), 2j electrode (G 2j) control electrode couples first current potential, and second current potential respectively, makes the 2j-1 deposit unit (SH in described a plurality of deposit unit 2j-1), 2j deposit unit (SH 2j) the formation blocker unit;
First electrode (the G with described displacement control electrode 1), third electrode (G 3), the 5th electrode (G 5) ... 2j-5 electrode (G 2j-5), 2j-3 electrode (G 2j-3) all couple first clock pulse signal;
Second electrode (the G with described displacement control electrode 2), the 4th electrode (G 4), the 6th electrode (G 6) ... 2j-4 electrode (G 2j-4), 2j-2 electrode (G 2j-2) all couple the second clock pulse signal;
Make described a plurality of image sensings unit (P 1～P n) sensed image and produce the charge packet in contrast to light intensity respectively;
Described charge packet is deposited at described a plurality of deposit unit: the first deposit unit (SH 1)～2n deposit unit (SH 2n);
Under the control of described first, second clock pulse signal, make the described first deposit unit (SH 1)～2j-2 deposit unit (SH2 J-2) in described charge packet in order by shifting out in the described CCD shift register; Wherein, described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the charge packet deposited, can not move into the described first deposit unit (SH by the effect of described blocker unit 1)～2j-2 deposit unit (SH 2j-2) in, so need not be with described 2j+1 deposit unit (SH 2j+1)～2n deposit unit (SH 2n) in the electric charge steamed stuffed bun deposited shifting out, described ccd image pick-up unit i.e. detected image once more;
Make described a plurality of image sensings unit (P again 1～P n) sensed image and produce and in contrast to the charge packet of light intensity respectively, and repeat the described step of charge packet being deposited and shifted out described CCD shift register.
7. method as claimed in claim 6, wherein, described first clock pulse signal and described second clock pulse signal are complementary signal each other.
8. method as claimed in claim 6, wherein, the voltage of described first current potential is less than the voltage of described second current potential.
9. method as claimed in claim 6, wherein, the voltage of described first current potential is 0, the voltage of described second current potential is positive voltage.
10. method as claimed in claim 6, wherein, further with the 2j+1 electrode (G of described displacement control electrode 2j+1), 2j+3 electrode (G 2j+3) ... 2n-1 electrode (G 2n-1) couple described first clock pulse signal, and with the 2j+2 electrode (G of described displacement control electrode 2j+2), 2j+4 electrode (G 2j+4) ... 2n electrode (G 2n) couple described second clock pulse signal.
CN 00106442 2000-04-10 2000-04-10 CCD image pick-up device and method for speeding up iamge pick-up Expired - Lifetime CN1205587C (en)

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