TW396709B - Method for increasing the dynamic detecting range for image of charged couple device - Google Patents

Abstract

The present invention discloses a technique for increasing the dynamic detecting range by using a novel solid image driving element. The solid image driving element has several photo sensors arranged in both horizontal and vertical directions to form a matrix. Several lines of vertical CCD are used for storing signal charges from photo sensor elements. The horizontal CCDs are connected with one of terminal points and vertically aligned to transmit those signal charges received from vertical CCDs to output devices. Therefore, in addition to using the exposure time Cs to modify the readout clock so as to provide extra exposure time Cx when the BLK signal is low, and illuminate the darker portion of the image, the method of the present invention also discloses a new concept of increasing both width and depth of vertical CCDs' channels and applying extra voltages on vertical CCDs to prevent those overflowing signal charges.

Description

__________ Η 7 i '发明 说 # (··) Field of the Invention: The present invention relates to a method for driving solid-state image elements, and in particular, to a method that can increase the image dynamic detection park of a charge coupled device. 8. Background of the Invention: In recent years, the image detection of a charge-coupled device has become the most important of many application components such as electronic image capture. For example, digital cameras that capture still images and digital green cameras that can capture images can be used not only for home use but also for education, company line, and broadcast media. These electronic imaging products have attracted attention because of the business opportunities everywhere. And, therefore, how to improve the quality of the image, and the related technology of sensing have become the battleground for businesses to achieve a leading position, and these are related to the structure of the light sensor and the design and driving of the driving circuit. The timing is closely related. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, a traditional solid-state imaging device, including a plurality of light detectors 100 and a plurality of vertical shadow charge light closing devices 200 (hereinafter referred to as VCCD) to The arrangement of the array is formed line by line. In addition, another column of horizontal CCDs 300 (hereinafter referred to as HCCDs) is arranged to connect one end of each row of VCCDs to receive the signal charges transmitted from the VCCDs and transfer them to the output element 400. In order to explain in detail the connection relationship between the photodetector 100 and the VCCD 2000, a row of the photo sensor 100 and its attached VCCD 200 06:06 PM 2 book &: Standard (CNS > Tiege (21GX297) Λ7 Η7 Printed by the Central Ministry of Economic Affairs and the Consumers' Cooperative Cooperative Association ^ Explained. Still refer to Figure 1, please also refer to Figure 2A, horizontally two words, light feeling One end of the detector 111 is adjacent to VCCD 2 1 1 and one end of the light sensor 112 is adjacent to VCCD 212. The other end of each light sensor is adjacent to the green area 50. In addition, in In the vertical direction, VCCD, 211 is adjacent to VCCD 212, VCCD 213, and VCCD 214 in sequence. Also, VCCD, 2U, VCCD 212, VCCD 213, and 乂 (: € 0 214 have electrodes ¥ 2, ¥ 3, respectively. And ¥ 4. And 乂 (: € 0, 215, VCCD 216, VCCD 217, and VCCD 218 also have electrodes VI, V2, V3, and V4 respectively. In other words, the transfer of signal charges is transmitted in four phases. 値It should be noted that the first light sensor 111, the second light sensor 112, and the third light sensor 1 1 3 are all processed through a color capture filter. Into a set, so the received signal charges have different properties. For example, if the first light sensor 1 1 1 receives magenta, the second light sensor 112 receives royal blue (cya η), then the third light sensor 1 1 3 receives green (gree η). The rest of the light sensors and so on. Before capturing the image points of each image, the light is shown in Figure 2B. The content of the sensor 100 must be cleared first. Therefore, a high reverse bias voltage of about .30V is called .Vh on the substrate electrode VSUB to form a depletion region and make it empty. The region is enlarged to touch the N-region 40. At this time, all the charges will be released to the N-substrate 30. On the other hand, if you want to start capturing images, the voltage of VSUB should be lowered to about 15 V, which is called v μ. This empty area can be formed to store the charge received by the photo sensor, as shown in Figure 2C. To read the signal charge received by the photo sensor, the electrode must be applied with 06:06 PM paper Standards apply to Chinese National Standard (CNS) Α4 specifications (210X297 public records) (Λ Notes between the first reading and then fill in the back of this page) • Disabled ^ r ..... Ill- · m · T I n _ · 'V-

Step on --- Λ Λ The Central Standards Bureau of the Ministry of Economic Affairs, the Consumer Cooperatives, printed the voltage: to form potential energy. (Figure 2 £) shows the relationship between the corresponding time series and small but capable well depths. Under the time of T1, v = a voltage of “m” size, although a potential energy well is formed under the V1 electrode, however, no signal charge is placed in the VCCD from the photo sensor, because An energy wall prevents the signal charge from overflowing. In the time, the voltage of Vi drops to the level of 0, so the phantom electrode: the formed potential energy well disappears and the potential energy wall is higher. To read the signal charge, the W electrode plate needs to be higher. The voltage level is "h". At this time, the potential energy wall of the light sensor disappears and the potential energy well below the VI electrode plate is deeper, so all h-number charges are stored in the potential energy well. Refer to Figure 3 The waveform and timing diagram of A are used to illustrate the relationship between the use of the clock and the driving of the solid-state image element as shown in Figures 1 and 2. First, at time 'A1, VSUB is applied with a high voltage Vh to reset the light. The sensor 100 is then applied with a smaller bias VM to start receiving signal charges. Each photo sensor 100 can provide a charge capacity with an upper limit of "Q". Therefore, if the light sensor 200 is saturated at "A2", in order to avoid the overflow of signal charge. Before the signal charge is saturated, VBLK (voltage of blanking) must first drop to the state of '0,'. At this time, the light sensor is stopped. The exposure of the measuring device. Usually, the signal charge in the VCCD is not read out immediately, but it does not start until the time corresponding to the “,” ′, corresponding to the pulse XS (H and XSG2 start to read the data. ”Note that xSGi It is processed by an inverter (not shown) before being connected to electrode VI. Similarly, XSG2 is processed by an inverter (not shown) before being connected to electrode V 3 to read the light sensor. The signal charge of 1 1 2. Figure 4 shows the transmission of VCCD signal charge in four phases 06:06 PM 4 This paper size applies to Chinese national standards (CNS > A4 specifications (21〇 × _297)) I 1- -I ---- T'li ^ 衣--(Notes on the back of Zi Xianjian Js < fill in this page again), τ 丰 A7 B7 Printed by the Consumer Standards Cooperative of the Bureau of Standards and Standards of the Ministry of Economic Affairs Explanation (Example. It should be noted that XV1 is also connected to V1 via the inverter, such as V1 shown in Figure 2. In order to form a potential energy well. Of course, the depth of the potential energy well varies with the magnitude of the voltage. The voltage pulses XV2, XV3 and XV4 and XV1 are processed through the inverter and connected to the electrodes V2, V3 and V4 respectively. At T1 Under time, both XVI and XV2 are applied with a lower voltage, that is, both V1 and V2 terminals are connected with a high voltage. Therefore, a potential energy well 201 will be generated below the electrodes VI and V2, and it is assumed that the signal power is f Is Q. The voltage applied to the voltage of XV2 is unchanged at time T2, and XVI rises to half of the original voltage and reduces χν3 to -half, so there will be two shallow potential energy wells 2 0 2 and 2 0 3 and a deep potential energy well 204 exist to store the above-mentioned signal charge q. In other words, part of the signal charge has been transferred from the area of the potential energy well below V 1 to the potential energy well below the V3 electrode plate. The same. At the time of T3, χν 1 rises to a high level% "1" "Therefore, the potential energy well below it completely disappears. The signal charge is transferred to the electrodes under V2 and V3. Finally at time T4 All the signal charges have been placed in the potential well area under the V3 and V4 electrodes. The traditional SON Y ICX5 8 AK chip system The staggered pattern spreads the signal charge 'in other words, when the first occurrence of BLK in the "1" state is exposed, the signal charge in the photo sensor will be in the BLK from, 1, 1, and the state drops to the "0" state After a period of time, it is transmitted as an odd block, and in the second occurrence of BLK in the state of '1,', the signal charge in the light sensor will be exposed from the "1" state in BLK_ to ,, 〇, 'state will be transmitted in an even number of blocks after a period of time. When the two methods of odd number and even number are transmitted, they can be combined to form a frame image (a franie 〇f image). If the received serial read image, the next BLK change

07:28 PM ---------- Clothing — ΛPlease read the notes on the back first-fill in this page) Order-

This paper size applies to the Chinese National Standard (CNS) (210X 297 mm). Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. A7 B7 V. Description of the invention (). The transmission method of the odd block will be explained first. Please refer to FIG. 3A and FIG. 1 at the same time. First, as described above, VSUB is first applied with a high reverse bias to clear the content of the photo sensor 100. Then the exposure starts. If the light sensor can be exposed for at most c s, the B L K signal must be reduced to 0 at this time to avoid the overflow of the 彳 s charge. Assume that the signal received by the first light sensor 1 11 is Q1 1, the second light sensor 1 1 2 has received the signal of Q12, and the third light sensor 1 1 3 receives the signal charge of Q 1 3, Light sensor 1 14 receives Q14, and so on. It should be noted that the signal properties received by Q13, Q12, and Qii are different, as described above. This is because these light sensors use different color filters to obtain signal charges of different properties. The light sensors form a group. Generally speaking, as long as the BLK has fallen to "0", the above-mentioned signal charges are not immediately read out to the VCCD connected to the above-mentioned light sensor, but are read out separately at time B1 and B2. Fig. 3B shows a partial magnification (i.e., area 500 in Fig. 3A) of the signal charge read out and the pulse clock transmitted with an odd number of stops. Here, a line of light sensors and its connected VCCD are used to illustrate the reception and transmission of its signal charge. At “B 1” time, the read signal pulse XSG1 is used to read the signal charge Q11 and is stored in the potential energy well of VCCD 211 (here and after, […], 'represents one energy well), Q12 and Q13 are stored in VCCD [213] and VCCD [215], respectively. It should be noted that both VccD 211 and VCCD 2 15 are connected to the electrode terminals of XV 1 and eyCCD 212 and 216 are connected to XV2 respectively. For the transmission of odd-numbered stops, it will start from "B3" time, at this time 07:28 PM 6 This paper size applies the Chinese National Standard (CNS) A4 specification (2 丨 〇 parent 297 mm) ------ --- ^-装 — (Mouth first, notes on the back of reading 苒 Fill in this page) -Order

Printed by the Central Standards Bureau of the Ministry of Economic Affairs of the Consumers' Cooperative Association A 7 B7 V. Invention Description 4 ..) XVI, XV2 and XV3 are all in the state “〇” but XV4 is in the state “1”, so Q 11 is added to Q 1 2 Then save to VC CD [2 1 1, 2 1 2 and 2 1 3]. In the beginning of "B4", XVI and XV4 are in the "1" state, while XV2 and XV3 are in the state, so Q1 1 + Q12 has been transferred to VCCD [212 and 2 13]. Only in the beginning of "B5" XVI is in the "1" state, and XV2, XV3, and XV4 are in the "0" state. Therefore, Q1 1 + Q12 has been transferred to the VC CD [212, 213, and 214]. Then, at the time of "B 6" , Q1 1 + Q12 has been transferred to VCCD [213, 214]. It will be transferred to VCCD [213, 214, and 215] within the time of "B7", and similarly, at "B8", when While Ql 1 and Q12 enter VCCD [214 and 215], Q13 + Q14 have been transferred to VCCD [218 and 219]. At the same time, the two columns closest to the horizontal charge coupled device HCCD 300 will be placed in HCCD 300 first. , And then transmit in two phases H1 and H2. The transfer of signal charge is the same as the VCCD described previously. Finally, a 0.5 horizontal line stop 1 corresponds to the last two columns of light sensors, and stop 3 corresponds to the penultimate third And the signal charge data in the light sensor of the fourth stop. For the output of the even stop, please refer to Figure 3C. When the next BLK rises from "0" to "1", the VSUB pulse changes from high to high. (Ie 15V), when exposed, the signal charges Ql1, Q12, Q13, ... are located in VCCD [21 1], [213], [215], ..., respectively, and are ready to be transmitted. In "Cl" Time, XVI, XV3, XV4 are all in the "0" state, and XV2 is in the "1" state. Therefore, Ql 1 exists in the VCCD [21 1], and Q12 and Q13 are mixed and added to the VCCD [213, 214, and 21 5 ]. At time C2, XVI, XV4 are in, 0 ,, state, XV2, XV3 are in "1" state. Therefore Ql 1 remains in VCCD [211], while Q12, Q13 advance to VCCD [214 06 : 06 PM 7 This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) --------- oil — (Read the notes on the back of the reading and fill in the 5ΪΤ page) Order. Ministry of Economic Affairs Printed by the Central Bureau of Standardization, Shellfish Consumer Cooperative Λ7 B7 V. Invention Description and 215]. At the time of "C3", because XV3 is in the state "1", and XVI ,, XV2 and XV4 are in the state, '0,'. Therefore, Ql 1 is transmitted to VCCD [21 1 and 212], while Q12 and Q13 coexist in VCCD [214, 215, and 216]. At another time, "C4", XVI and XV2 are in the state ,, 0, , But XV3, XV4 State "1" Thus, Ql, a still VCCD [21 1 and 212] inside, and Q12 and Q13 to coexist in the VCCD [21 5 and 216] inside. By analogy, the signal charge in the light sensors closest to the plurality of HCCDs will be first placed in the HCCD and output 0.5 horizontal lines. Block 2 corresponds to the output of the array of light sensors closest to the HCCD. Block 4 corresponds to the output of the second and third light sensors close to the HCCD, if there is an even number of light sensors. According to the above method of transmitting the signal charge, the traditional method can be developed when the B i kingfish, the light sensor accepts the exposure. L wait-B 丄 K drops-to low power; after m, stop m, and- After-a period of time-Lu-a double fast, and repeatedly output signals such as block 1, 2, 3, 4, ..., so that some image information will suffer. Due to the saturation problem of the light sensor, Loss, the image is lost. Divide-to-connect-policy A. There is a particularly dark image of object light in the general average brightness. To prevent signal charges from overflowing in the brighter areas, the above-mentioned extremely dark images will be underexposed, otherwise, they will be brighter. The owner has a problem that the signal charge overflows and blunts. The above-mentioned problems await an invention to be solved. The purpose and summary of the invention: The first purpose of the present invention is to solve the traditional drive. The solid-state imaging elements have underexposure and make the darker areas in the image brighter. ^ '' '06:06 PM Λ _________ 8 This paper standard is applicable to the country of China Standard (CNS) Λ4 specification (210x297) (please read one note and fill in this page)

Λ _ Β7 '--- ------ ---- I, _ V. Description of the invention-(0 Another object of the present invention is to solve the limitation of the conventional solid-state image element driven by the light sensor The signal charge carrying capacity of the device is not easy to provide the image resolution. The present invention discloses a new technology for driving solid-state image devices to increase dynamic range. The solid-state image device includes a plurality of light sensor elements for horizontal and vertical Directions are arranged in a matrix. In addition, a plurality of rows of vertical CCDs are arranged with the light sensor array to store the received signal charges from the light sensor elements, and one column of horizontal CCDs is connected to one of each row of vertical CCDs. The terminal is used to superimpose the signals received from the vertical CCD to the output device. The method of the present invention uses the conventional exposure time CS to modify the readout clock so that the time of the BLK signal low potential can additionally expose the time of CX In order to make the darker part of the image also obtain the method of enhancing the brightness, the present invention also discloses to increase the vertical channel width and depth and to increase the voltage in the vertical CCD to increase the potential well depth It is used to prevent the concept of signal charge overflow. The door icon simply explains: Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economy I— il-^ — 111 ·! --1 I .......-I— i ., / 1 士 I ------!;?. <Five notes of reading the rain, 15 items of nose girl cutting scissors) The preferred embodiment of the present invention will be supplemented by explanatory graphics in the following text. Detailed explanation: Figure 1 shows a simplified layout diagram based on SOfY-JimMAK device and VCCD; ―One exhibition and three chips = first sensor and a vcci_nf adjacency relationship diagram; &quot; 'Figure 2B shows a crystal based on SONY IC058AK .1, Ready Sensor 06:06 PM 9

This paper size applies to China National Standard (CNS) A4 (210X 29 * M &gt; ¥ T Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. Λ7 B7 V. Inventory 晛 (…) The relationship between the empty area and y „sub ; ................................................................................................................. 2C shows according to SONY IC058A —Light: of the sensor ------------------- -------------. The relationship between the empty area and V s; ( Figure 2D shows the relationship between the depth of the well depth and the applied voltage according to the second device of SONY IC058AK chip and ++ /; ·-· — ^ ..... . "图 兵 ——, 么" Official drive tough SONY ICO5 8AK — crystal 4--time one pulse one and “preparation — Xuan — plate” pulse pulse __ .. excellent. Figure; Figure 3B shows Figure 3 4I Partially placed ~ great use-I said-Ming Yi Qi-Shuai one J Zhuan "" [Fu Yu :, Yi 丨 Yi-Guang Yi Yi charge color clock diagram; Figure III-~ G-shown three Λ The partial enlargement is used to explain the-even ... number ~ block-bit image signal, the late response of the number of charges I; __ —Phoenix "1„ Display 4 phases of-¥ €-&amp; 0 time signal phosphine Figure 5A shows the Jt pulse used in accordance with the invention Clock diagram of outgoing and transmitting signal step charges; Figure 5B shows the clock read signal charges according to the present invention and then odd numbers. ....-.............. .... &quot; &quot; ......—.— Gated Acoustic Transmitting-Clock Diagram; Figure 5C shows the data according to the book # 明 之 钟 Read 4 electric charges and then use an even number 襕 1 : ¾ signal-charge clock diagram; / Figure 6A shows the exposure curve according to the traditional method; and Figure 6B shows the exposure curve according to the method of the present invention. The grayer part of the image also obtains satisfactory brightness. .....— ～. 一 〆— _ Detailed description of the invention: 06:06 PM 10 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) — ^ ϋ mu mu SI- 1 ---- -ne \ yf m. (please ^-read the notes on the back and fill out this page) -β # 5. Description of the invention () As stated in the background of the invention, when the image contains strong contrast areas and weak contrast areas, To obtain a better resolution, the intensity of the overall image must be weakened. Otherwise, when the dark places in the image also show appropriate brightness, some of the image information must be sacrificed. This is because the capacity of the light sensor is a limit For the sake of stability, amplifying a signal with an external circuit will also synchronously amplify noise. The present invention will propose a method to solve the above problems. In a preferred embodiment, the present invention uses the image chip described in the background of the invention. That is, the same is SONY IC05 8AK. Therefore, the layout of the light sensor and VC CD is the same as that in Figure 1. The structure and relative position of the light sensor and VCCD are also the same as in Figure 2. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economics However, as shown in Figure 5A, the timing of the present invention is different from the traditional method. First, when the BLK is in the "1" state for the first time, the signal charges in all the light sensors 100 are first cleared with a voltage of about 30 volts. Then, the exposure is started. The BLK is reduced from a high potential to a low potential It is assumed that c S has been exposed at this time. At this time, the light sensors 1 1 1, 1 1 2, 1 1 3, and 1 1 4 have accumulated the signal charges of Qll, Q12, Q13, and Q14, respectively. And the conventional method The difference is that when BLK is reduced from high potential to low potential, XVI and XV3 need to be at "0" first to form a potential energy well. Then, it is added to VCCD 21 1 and 21 3, ..., and other odd numbers. The xSG1 and XSG2 pulses of the VCCD sequentially read the light sensors (ie, XI and XV3 are at the,, 0 ,, level) to read the signal charges in the light sensors. These read signal charges Q1 and Q12, Q13 and Q14, ..., will be stored in the bit energy wells of VCCD 211, 2 1 3, 2 1 5 and 2 1 7, ..., respectively, so that the above-mentioned light sensor can continue to receive signal charges. After that, in the first short period of time 11, the electricity accumulated by the above-mentioned light sensor is q 1 11, q 1 2 丨, 11

07:22 PM This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) ______ _B7 V. Description of the invention () qlh, and q14i, '..., and read out for XSG1 and XSG2 pulses in sequence. And stored in the VCCD 211, 213, 215, and 217, ..., bit flb wells. In the second short period of time t2, the electricity percentages accumulated by the aforementioned light sensors are qll2, ql22, ql32, and ql42, and are stored in the bits of vcCD 2 1 1, 2 1 3, 2 1 5 and 2 1 7 Noi. Similarly, in the last short period of time t9, it is assumed that it is the ninth short period of time, and the charges accumulated by the above-mentioned photo sensors are ql 19, ql29, ql39, and ql49. Generally speaking, each short period of time is about 10-100 μ3, and the typical value is 63.5 μ3. Therefore, since the signal charge is not transmitted to the VCCD after the above-mentioned hours, it is also accumulated in the charge. On each VCcD channel to maintain the signal integrity of each pixel. In other words, the brightness at weaker contrasts can be enhanced. Assume that the total charge at VCCD 21 1 is Q1 1τ, and Q11t = Qll + qll! + Qii 2 + .. + qli9. Similarly, vcCD 213

The total electricity% is Q12T, Q12T = Q12 + ql2i + ql22 +… + q. 1290VCCD The total charge printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 215 is q13t, and the total charge of vCCD 217 is q14t. It should be noted that the aforementioned additional exposure time c X must satisfy the relationship (Cs + Cx) / Cs &lt; n, where in the embodiment described above, cx = the time sum of the first to ninth segments, n = The charge capacity ratio of VC CD to the charge capacity of the light sensor. In other words, Cx should be less than (η-1) X Cs to avoid the overflow of signal charge. This part can use a multiplier to complete the calculation of the time to calculate the additional exposure. Secondly, it should be noted that it is necessary to ensure that when BLK goes from low to high, all signal charges in the VCCD can be transferred. After reading the signal charge in the last segment, that is, a9 ”time, the VCCD can be transmitted afterwards, the transmission method of the odd number of stops, and Q7: 22 PM _ 12 described in Figure 3. This paper standard applies to Chinese national standards (CNS) M specification (2 丨 0X29? Mm) Printed by the Ministry of Economic Affairs, Central Consumers ’Cooperatives_ A7 ______ H7

V. Description of the invention .. (.J method is similar, please refer to Figure 5B (a partial enlarged view of area 1000 in Figure 5A)), Q11t + Q12t are stored in VCCD [211] and VCC [213] respectively. It changes in the following order: VCCD — VCCD [211, 212, and 213] — VCCD [212 and 213] — VCCD [212, 213, and 214]-&gt; VCCD [213, 214]-&gt; [213, 214] , 215]. Q13T + Q14T. After they are stored in VCCD [215] and VCC [2 17], they move in the following order and change: VCCD — VCCD [215, 216 and 217] — VCCD [216 and 217] — VCCD [ 216, 217, and 218] 4 VCCD [217 and 218]. The rest can be deduced by analogy. When Q1 It + Q12T is stored in the VCCD [213, 214, and 215], Q13T + Q14T is stored in the VCCD [2 1 7 , 2 1 8 and 2 1 9]. Similarly, the signal charges in the last two photosensors are read out and passed down to the HCCD, alternately advance to the output device with two clocks H1 and H2 and output 0.5 The odd number of horizontal lines is 1. The first signal charge sent in this embodiment is the content of 1 1 7 and 11 8 in the last two columns of light sensors. Then, the other two columns 11 5 and 116 light are output. The content of the sensor starts with It is Block 3. Figure 5C shows that the transmission of the even block is similar to that described in Figure 5B above. Q 1 1 τ, Q 12T, and Q1 3τ are stored in V [2 1 1] and VCCD [213, respectively. ] And VCCD [215] and then change Q12T in the following order: Q12T + Q13T are changed by VCCD [213, 214, 215] 4 VCCD [214 and 215] aVCCD [214, 215 and 216]-»VCCD [215 and 216 ] »And when the Q12T + Q13T pair is at VCCD [215 and 216], Q11T moves to VCCD [21 1 and 212]. According to this principle, the signal charge will move into the HCCD using the change in VCCD potential and also enter the HCCD with two clocks. H1 and H2 alternately advance to the output device and output 0.5 horizontal line _06: 06 PM__13 ^ The paper size applies the China National Standard (CNS) Λ4 specification (210X 297 mm) ------------ 0¾.- -(Read I, read the notes on the back 1 and fill in this page 31), ιτ.Φ. The Ministry of Economic Affairs has asked the central government of the Ministry of Economic Affairs to print 2 number blocks 2, 4, 6, ---. In this embodiment, the first output is the last row of light sensors of package 3 light sensor 1 1 8, stop 2, and then the two rows of light containing light sensor 1 1 6 and 1 1 7 Charge in the sensor, stop 4. It is important to note that in order to change the timing so that the dynamic range is increased and does not cause the electric noise overflow. There are two incidental measures that are also best-and use: (1) Add each VC CD temporarily The channel length and depth of the register 200 are used to increase the carrying capacity of the signal charge. (2) Increasing the bit energy well depth of the vcCD register, which can be obtained by increasing the voltage 驱动 for driving the VCCD. In a preferred embodiment, the voltage that can be applied is about 15-30 volts. The advantages of the present invention over the conventional technology can be more clearly understood by comparing FIGS. 6A and 6B. FIG. 6A is an exposure curve according to the conventional technology, and the dashed line 10 is the saturation of the light sensor. Line 1 2 is the exposure between the brightest part and time. The exposure Cs time is saturated, and solid line 1 3 is the exposure curve for the darker part. The solid line i 4 is an exposure curve relatively darker. It is obvious that if the exposure is stopped when the light sensor is saturated, the brightness in the darker area will be insufficient. FIG. 6B shows the exposure curves of 15 '16 and 17 sequentially in the darker areas according to the method of the present invention. It can be clearly seen that because the exposure time of Cx can be increased, there is no need to worry about the brighter signal. The problem of charge overflow, so you can easily increase the brightness of the dark places in the image. The present invention is only described in the preferred embodiments above, and is not intended to limit the application park of the present invention. Those skilled in the art will not depart from the present invention at 06:06 PM "__ ________ 14 This paper standard applies to China National Standard (CNS) A4 Specification (2 丨 〇χ297 ^ cent) ---: ----- 1MM Pack-(Please read the precautions on the back before filling this page) Order • Φ A7 B7 V. In the spirit of the sun and the moon (), when some changes or modifications can be made, their patent protection scope should be included in the scope of patent application below. For example, the present invention is based on SONY ICX0 5 8 AK, but it is not limited to this. The invention is only applicable to this chip, and although the present invention uses four phase shifts to transmit signal charges, in fact, it can also be applied to a chip with only three phase shifts, that is, it has nothing to do with the transmission method. The main spirit of the present invention The signal charge is read when BLK goes from high to low, and no charge is transferred at this time. —I I- H -I--ml = _ι ·-! SI— I ...... .-—- -I---- 1- -Hi---I ---- ejHI 1! ·-,]?---In r a i '丨'_ Please read the Notes on the back to fill out this page) Ministry of Economic Affairs Bureau of Standards employees consumer cooperatives printed 06:06 PM_15_ this paper scale applicable Chinese National Standard (CNS) A4 size (mm up 2i〇X297

Claims (1)

Scope of patent application A8 B8 C8 D8 Printed by the Consumers' Cooperative of the Central Economic and Technical Bureau of the Ministry of Economic Affairs 1. A method for driving a solid-state image element to increase dynamic range, the solid-state image element includes a plurality of light sensor elements arranged in a matrix in a horizontal and vertical direction, and a plurality of rows A vertical CCD is arranged along with the light sensor array to store the received signal charges from the light sensor element, and a horizontal CCD in one column is connected to the vertical CCD in each row, and a terminal is used to receive the signal from the The signal charge of the vertical CCD is transmitted to the output device, and the method includes at least: Step one: The plurality of light sensor elements receive a signal from an object $ and convert it into a signal charge: Step two, in the BLK cycle, the When the level becomes low, the signal charge of the light sensor is read and stored in the vertical CCD adjacent to the light sensor element. Step three, continue with the plurality of light sensor elements. Receiving a signal from the object and converting it into a signal charge; step four, reading the signal charge of the photo sensor and storing the signal charges adjacent to the photo sensor element Step 5: Repeat Step 3 and Step 4 for thousands of times; Step 6: Stop reading the signal charge and transfer it from the vertical CCD to the horizontal CCD column; Step 7: Step 7 The CCD transmits this signal charge to the output device. 2 _ As for the method of applying patent scope 1, wherein the above steps 2 to 7 are completed when the BLK signal is at a low potential. 3. The method of applying for patent scope 1, in which the above three steps and steps ----------- meal ----- 丨 11 ~ ----.-- ^ (please read E first Note on the back, please fill in this page again.) This paper size is applicable to China's national benzene standard (〇 奶) 戍 4 wash grid (210 fathers and 297 public holidays) 6. Scope of patent application A8 B8 C8 D8 Printed by the Consumers' Cooperative of the Central Economic and Technical Bureau of the Ministry of Economic Affairs 1. A method for driving a solid-state image element to increase dynamic range, the solid-state image element includes a plurality of light sensor elements arranged in a matrix in a horizontal and vertical direction, and a plurality of rows A vertical CCD is arranged along with the light sensor array to store the received signal charges from the light sensor element, and a horizontal CCD in one column is connected to the vertical CCD in each row, and a terminal is used to receive the signal from the The signal charge of the vertical CCD is transmitted to the output device, and the method includes at least: Step one: The plurality of light sensor elements receive a signal from an object $ and convert it into a signal charge: Step two, in the BLK cycle, the When the level becomes low, the signal charge of the light sensor is read and stored in the vertical CCD adjacent to the light sensor element. Step three, continue with the plurality of light sensor elements. Receiving a signal from the object and converting it into a signal charge; step four, reading the signal charge of the photo sensor and storing the signal charges adjacent to the photo sensor element Step 5: Repeat Step 3 and Step 4 for thousands of times; Step 6: Stop reading the signal charge and transfer it from the vertical CCD to the horizontal CCD column; Step 7: Step 7 The CCD transmits this signal charge to the output device. 2 _ As for the method of applying patent scope 1, wherein the above steps 2 to 7 are completed when the BLK signal is at a low potential. 3. The method of applying for patent scope 1, in which the above three steps and steps ----------- meal ----- 丨 11 ~ ----.-- ^ (please read E first Note on the back, please fill out this page again) This paper size is applicable to China National Benzene Standard (〇 奶) 洗 4 wash grid (210 father 297 public holiday) A8 B8 C8 D8:? Τ, the volume of the patent application range- I plus ^ cd _ of 4 words., Number _ Dianfeng | 51 Zhu _ mutual capacity I and ^ Sense Jlill King 1-値 所 _ 定 _ 定 "-Yan it 値 minus Yihe Tong ^^ 的 童 4 Receive the letter _1 poem mi 篆 product is-the maximum can increase the exposure time. 4. The method of applying for patent Fan Huang 1, wherein the above-mentioned step three, each time 1 receives the object with the dragon sensors from ..... The time is about ιοί 00 ps ° ^-如 申- Please- · Special-Profit-Fan Huangzhi Fang Qu, including the team width squeezed out-¾-bearing 6. If the method of applying for patent scope 1 "_ more. Including I vertical-CC.D pass. .. —... w S Depth plus too .. To increase.-Plus-bearing: connect-from-light ^^ 1 device_ the cover-up to 1 smoke charge capacity. 7. If the method of applying for patent scope 1 further includes the voltage of the thick drive-vertical animal CCD '. _. Increase _. To .1 5-3 〇V _._ to increase the number of undertakings from the light .. sensor. The charge capacity of this signal is -f _ '. V ^ ~ —, 8. As in the method of Shen Xia_Special_Profit_Range 4, it also includes the second method-shake, to calculate' Xia Xia shoulder ~ Wapan ~ plus the exposure time _... · ----- „------ Packing--(Please read the precautions on the back before filling this page) Threading printed by the Central Consumers Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, using paper standards in China, using Chinese national standards (CNS) A4 size (210 X 297 mm)