TWI328389B - - Google Patents

Description

1328389 IX. Description of the Invention: [Technical Field] The present invention relates to a resolution switching circuit and method, and to a resolution switching circuit and method for a contact image sensor. [Prior Art] Read the f-contact image sense (4) Switching circuit diagram. a control unit u controls, by using the first control signal RST, the second control signal SHR and the third control signal SHS, signal capture and storage of a plurality of button numbers 1-3, 132, 133, 134; The four control signals CON1-6 / respectively control the sensing element end resolution switching line 12 (DPI selection circuit f〇r sen〇r) and the displacement temporary crying end resolution switching line 15 (DPI selecti〇n circuit f〇r shift The output of the control signals TG2, TG3, TG4 of the plurality of shift registers (4), 142, 143, 144 is clamped by the appropriate switching image sensing elements 161, 162, 163, 164. Next is a pixel (pixel) The operation principle of the conventional contact image sensor switching circuit is explained. The image sensing component 161 generates a signal after sensing an image, and the signal is transmitted to the optical signal conversion unit 131 via the sensing component end resolution switching circuit 12. The optical signal conversion unit 131 receives the first control signal RST by using the first switch S11a and resets the line of the operational amplifier 〇Ua, and then receives the signal and amplifies it. Then the output amplifier 011a is output. The number is transmitted to the first through the second switch S12a, the storage element Cl1 is stored, or transmitted to the second electrical storage element C12a through the third switch 5133. The second switch S12a receives the second control (four) S HR to sense the image. The first image signal of the image sensed by the component 161 is stored in the first electrical fault storage component Cl1a, and the third switch S13a^5 1328389 is configured to store the image number sensed by the image sensing tree (6) in the second electrical storage Element (4). Usually the first-shadow C signal is the optical signal of the ΐ image (ι 宁ai) road 15 22., _) ° then the displacement register end resolution switch line material I" 1 unit 11 Four control signals C〇N5, CON6, come? G= register 141, 142, 143, 144 turn out control signal 仙 Receive: two

The device is turned on, so that the image signal of the first electrical storage device is outputted by the first transistor MP1 in the form of a house. At the same time, when the optical signal is on the m 1 2 (10), the output (4) _TG1 is received.

= the second image signal in the second electrical storage element C12a is received by the second image output line (10) 2 by the second image output line (10) 2, and the control signal TG2 is outputted by the second image output line (12). The output A line 〇 UT1 and the second image output line 2 output respective n image signals and the second /

For processing by the back end related image processing circuit. child

Therefore, different resolution switching is performed by the control unit U signal__4 to control the sensing element end resolution cutting action, and the fourth control signal CqN5, c〇N6^^ register end resolution switching line The action of the 15th movement circuit has the following disadvantages: Switching into a k-type, noise (noise) is easy to switch through the sensing element end resolution I2 affects the optical resurfacing material U1 receiving image sensing element

The sensed image signal and the reduced signal ratio) ° V 6 1328389 The second image C and the second image signal are output by voltage, and the "J 0UT1" and the second image output terminal OUT2 are input. When the signal transmission distance in the field is too long, there is a uniformity of the body 2 and the Vth lightning, the first-electrode in the number conversion unit 131, and the ^^:= area TM 4 is added. In addition, the cost is increased. [Inventive content] In view of this, the present invention is a circuit that does not require the resolution of the lin (10) resolution switching switching line, displacement register end resolution sensing element end analysis The effect of noise is increased, and the signal noise ratio is improved to avoid the cost of the first image signal and the second image signal. In addition, the internal output of the switched capacitor (SC) circuit is the output of the $, δ and dark signals. This avoids the resistance of the signal output line to transfer the signal. Borrow distortion during the process to improve uniformity. And t, which causes the signal to be set in the transmitting optical signal conversion unit, can eliminate the conventional circuit. Therefore, the present invention provides that the circuit cost can be reduced. The utility model comprises a plurality of image capturing units, and a mirror switching degree switching circuit, wherein the image is connected to the image capturing unit and the unit is connected to the image capturing unit. Combining a signal with the image and combining the second images: 兀, for combining the first images, the image extracting unit and the signal '22' control unit, connected to the early element, for controlling The image 7 shift register, the individual 2 first-shirt image signal is transmitted to the signal merging unit; and the ―^^ 疋' is connected to the touch temporary storage $, and the processing system performs the displacement temporary Save to switch between different resolutions. X control signal control

- Amy also provides a method for switching the image sense resolution. The first I = fetch unit is generated separately - the first image signal and some amber. Then, the resolution control unit, the image recognition signal, the resolution control, the number, and the resolution are generated corresponding to the displacement register roots 'solution=store. Then the signal is controlled to control the 'image t's multiple rounds of control unit combination === the most = merge technology effect has a pre-'= into the entry and specific understanding 'however, this is passed - taste It is intended to limit the invention.丨k for multiple test and explanation, and [Implementation] Energy side: reading sensor resolution switching circuit 早 early ^, multiple image uncovering, circuit = including - control 241~%, - resolution The control order 'ΓίΐΓ shifts the temporary 27. The control unit 21 sends the early 兀25 and a k唬 merge unit signal SHR and a first:, the signal RST, the second control brother-control signal SHS to control the first image capturing unit 231 and the second image capturing unit 232. The nth image capturing unit 23n^, image capturing and image signal storage; and further using a fourth control, number CLK (four) rhyme merging unit 27, so that (4) merging unit 27 transmits through the first image output line 〇UTp and The two image output lines 〇UTN receive the image signals generated by the capture units 231 to 23n. The resolution control is 7G 2 5 according to the resolution city, and the output corresponds to multiple resolutions = system (4) CC1 ~ CCf (the number of control of the resolution control signal is 2, which varies according to the resolution switching number m) ) to control the output of the signals of the shift registers 241 to 24n. The shift registers 241 1-2 output a plurality of output control signals TG1 TG TGn ′ according to the resolution control numbers CC1 ～ π 2 η 以 to control the image capturing units 231 -23 23 n to output the captured secret signals to the signals. Merging unit 27. The present invention controls the capture and transmission of images in response to resolution requirements by controlling the timing of each control signal (RST, SHR, SHS, CLK, TG1 to TGn). The image capturing units 231 to 23n may be arranged in a line structure to capture the target image. Next, the operation principle of each of the control signals (RST, SHR, sjis, CLK, TG1 to TGn) for controlling the image capturing units 231 to 23n and the signal combining unit 27 will be further explained. The first image capturing unit 231 is used as an example to describe that the first image detecting unit 231 receives the first control signal rst, the second control signal SHR, the third control signal SHS, and the displacement temporary storage generated by the control unit 21. The output control signal TG1 generated by the device 24i generates and outputs an operation principle of a first image number and a second image signal. Please refer to the third figure, which is the circuit diagram of the invention image_taking unit. The first image capturing unit 231 includes an optical signal converting unit 2311, a second switch S12, a third switch, and an -H switch, a fifth open MS15, and an 'electric storage element cn including an optical signal conversion unit. In the package, the first switch SU, the operational amplifier oil, and the image sensing device d optical signal conversion unit 2 > rst causes the first switch S11 to receive the control signal conversion unit 2311#€ The power supply vm transmits the image to the operational amplifier, the cow D1 (10), the shirt, the oil, and the amplified image signal, respectively, through the second calculation: the first image signal is stored in the first __, 1 image «S13 2° usually the first image signal and the second: ^ 兀 signal U café Si_) and the dark signal is the light of the f image

Sl2 operates a according to the second control signal SHR, and the first switch is stored in the first electric storage element (3); the third sc signal is generated in the signal S H S to operate the second image = the second control element (1). Then, the fourth switch S14 and the second electric storage C]7 _ the shirt image L and the second electric storage image signal are respectively output by the first image output line and the first image output line OUTN. And the second image capturing unit 232 receives the optical signal conversion unit (not shown) in the RST control = 唬2 signal SHR and the third control signal SHS controls the internal control and the third switch ( The action of the figure (not shown), (the figure number and the second image signal, and then the internal register signal TG2 of the displacement register 242 controls the internal fourth switch (not shown) and the second control of the Q map. The action 'by the first image output line=the second image of the second image extracting unit 232= is connected to the nth image touch unit 仏, the image signal difference second impurity reduction unit 23n the first description signal Merging unit 27 · The unit 21 receives the fourth control unit and the operation principle of the image capturing unit 231~23 = image; the signal of the present invention is a single embodiment, first referring to the fourth A picture signal combining The circuit diagram of the example. _ combined into the double-ended output of the operational amplifier 〇27, the sixth switch%, the =, the capacitor C271 and the capacitor coffee. The sixth switch% and the device 〇27 Λ in parallel: and money connected to the double-ended input The double-ended output operation amplification gate S7 is broken, the receiving end 1N1 and the first output end (10), and the seventh=^ is connected in parallel with the capacitor C272, and the second signal receiving end IN2 and the second output end OUTP signal receiving end IN1 connected to the double-ended input double-ended output are connected to the first image. The output line receives the first image (four); the second output terminal 0Τ2 is connected to the image output line OUTN to receive the second image signal. The sixth circuit 7 receives the fourth control signal to reset the first image and the second image. The image wheel exits the line OUTN, and the op amp 027 with the double-ended wheel is connected to the image signal and the second and double-ended input double-ended output of the operational amplifier 027 combines the image signal with the image signal to generate the first Combining the signals; and combining the image signals to generate a second combined signal. The output terminal 0T1 and the second output terminal OT2 rotate the difference between the first-combined 1328389 signal and the second combined signal.

Referring again to FIG. 4B, it is a circuit diagram of a second preferred embodiment of the signal combining unit of the present invention. The signal combining unit 27B as shown includes a first operational amplifier 027, a second operational amplifier 272, an eighth switch S8, a ninth switch S9, a capacitor C273, and a capacitor C274. The eighth switch S8 is connected in parallel with the capacitor C273 and is connected to the first signal receiving terminal IN71 of the first operational amplifier 〇271 and the first output terminal 〇Τ71. The ninth switch S9 is connected in parallel with the capacitor C274 and is connected to the second signal receiving terminal IN72 and the second wheel terminal OT72 of the second operational amplifier 0272. The first signal receiving terminal 71 is connected to the first image output circuit 〇υτρ to receive the first image signal; the second output terminal 72 is connected to the second image output line OUTN' to receive the second image signal. And the first operational amplifier ο〗? The other receiving end of 1 and the second operational amplifier 0272 is connected to a fixed bias voltage Vref. The eighth switch S8 and the ninth switch still receive the fourth control signal,

The first image output line OUTP and the second image output line 0UTN are reset, and the first operational amplifier 〇271 and the second operational amplifier 0272 are simultaneously received by the first operational signal 及271 and the second operational amplifier 0272. The first operational amplifier 2271 combines the received first image signals to produce a first output terminal OT1 to output a first-combined signal two' to generate a second combined signal, and is output by the second round. == Two combined signals. Dear brother: Action relationship of resolution switching, please refer to the sensory thief resolution switching circuit normal resolution signal timing BA invention knows the fifth A picture of the invention image sensor gens = electric = 12 1328389 sensing i array as the first The fifth A diagram is an example of an image of ix 8, and the image capturing component has a circuit which is merely a number of the embodiments of the present invention and is not limited by the present invention. First, when the circuit is changed at the normal resolution, the first image transmission is generated and the image is captured as early as 231~238 units 231~238: ~+ shirt image signals are stored in each image capturing system as sc^^, Electrical storage component. Because the number of segmentation degrees of the resolution is 21"·1), the degree of U resolution (four) is called (the resolution (4) (four) of the number of controls = G1 τγ shift register such as ~ 248 will produce output control ΐ ^ΓΓ23! τ- For example, the unit is transmitted via the first image output line ουτρ, =5Λ and the younger brother = OUTN to the signal combining unit 2?C out of the line, then refer to (4) six figures, material ϋ; ^ Ming). : Invented image sensing device - two resolution - resolution = figure ' to match the description. If the image sensor is free, the control unit 21 also sends the first control; the system = HR and the third control signal SHS, so that each ==: takes the first image signal and the second image signal. And storage:: =2) 'The resolution control unit 25 will need m and c; two two = 13 1328389 control signal (10) analysis control pet lying (four) number w mountain i control delivery 1 ^ 3, 1 ^ 4, output control Signals TG5, TG6 i =, number TG 7, rc 8: first _ turn on the first image capture y70 pick η t one of the image capture unit 23 2 and the fifth open third image capture The unit 233 and the fourth image capture the fourth switch and the fifth switch 'and then turn on the fifth shadow at the same time

The door: 70] 35 and the fourth switch in the sixth image capturing unit 236 and the second switch simultaneously open the seventh image capturing unit 237 and the fourth switch and the fifth switch of the eighth image, so that the image capturing unit = Looking at the second image output line OS; the combination to the apostrophe and copy unit 27 is combined to achieve the purpose of lowering the resolution. Luke 4: The seven maps are for the analysis of the resolution of the image sensor of the invention, and the analysis of the history of the electrician goes to the #U timing chart, and at the same time, refer to the seventh A picture, which is one quarter of the hair-sensing device. If two == single on 21, the first _ control _, = _ letter & - control to make each image capture unit 231 ~ 238 signal and the second image signal, and stored in each image capture system / Zhongzhi electricity storage 7^ pieces. Because at this time, the degree of rectification switches a number of r numbers (hang - 3 degrees, one-point resolution and quarter-resolution three (m = 3) ', so the resolution control unit 25 will need CC1, control A few Dan A 34 four resolution control signals (the second of the resolution control signal is 2), then the displacement registers 241~248 are combined with the shore to generate the input signal TG1, TG2, TG3, TG^; =: 14 ! 328389 TG5, TG6, TG7, TG8 'first ray attack, second image manipulation unit 232' = pick: = the same as the fourth switch and the fifth switch, then the unit, the sixth image capture unit, 2: = Γ 237 and the fourth (10) and the social switch ' in the eighth image capturing unit 238, and the first image signal and the second image of the image capturing unit 231~ are made into a narrow image, '

Oim and the second image output line are merged to achieve the purpose of lowering the resolution. The transfer to the domain merges earlier. 27 Invented image sensor resolution switch, the electric image, the madness, the t-picture, and the eighth picture. Heart ===: Function block diagram of the resolution switching circuit: Although the image sensor is desperately released by the control unit 21, the control unit 21 sends the first control 2; on the day, the coffee machine and the third control signal SHS ===_Different control letter generates the first image signal and the second image ^70 231~238 units 231~238 in the thunder storage - material sub-storage in each image retrieval system including normal resolution households, _ eight: Because at this time, the degree of segmentation of the degree of resolution is divided into - the resolution - one: 匕 7 degrees, quarters - resolution and 25 will need CC1, cc: 2,), so the resolution control unit CC8 eight Resolution, T, CC5, CC6, CC7 and Γ), then shift the temporary storage of her system to ^ D (7) ~ TG8, at the same time 曰 1 sequence same = money out control brother four switches and fifth opening, and Μ = For example, the image-capture unit 231~238 line (10) and the image signal via the first image are captured in the first 70 231 to 238. The image output line OUTN is transmitted to the signal combining unit 25 1328389 yuan 27 to achieve the purpose of lowering the resolution. However, as mentioned above, it is only the ::: pattern, but the details of the invention == embodiment The present invention is intended to be used in the scope of the present invention, and all of the scope of the present invention should be included in the scope of the present invention. = The technical scope of the patent is as follows. Under normalization or modification can be covered in [Simplified description of the schema] f - The diagram is a conventional contact image sensor switching brother second diagram: the image sensor resolution switching heart of the present invention ^ The second diagram is the basis The circuit diagram of the image capturing unit of the present invention. The fourth embodiment is the circuit of the first preferred embodiment of the signal combining unit of the present invention. The fourth embodiment is the circuit of the second preferred embodiment of the signal combining unit of the present invention. (4) The timing diagram of the image conversion signal; the fifth A diagram of the electric ridge suspension resolution is the normal energy block diagram of the image sensor of the invention; the sixth diagram of the X road is the image sensor analysis of the invention Degree resolution signal timing diagram; -$ one solution is the functional block diagram of the image sensing crying and _eight> - Knife - Resolution Switching Power Seventh, Eighth, Eighth, Eighth, Figure 4 is the image sensor resolution switching circuit of the present invention - the resolution signal timing diagram; A:: = image sense The degree switching circuit A is a functional block diagram of the eight-eighth road of the image sensing device of the present invention. One of the electric eighth resolution resolution switching power [main component symbol description] [known technology] control unit 11 sense element end resolution switching line 12 optical signal conversion unit 131, 132 displacement register 141, 142 143 134 . %, 144 shift temporary storage resolution conversion line skip 影像 image sensing elements 161, 162, l 163, first control signal RST second control signal SHR third control signal SHS fourth control signal CONl, C〇N4 > C0N5 com CQN2, c〇N3 control signals TGI, TG2, τα flute-iG3, TG4 first switch SI la 17 1328389 second switch S12a third switch S13a fourth switch S14a fifth switch S15a operational amplifier 011a First electric storage element Cl1 second electric storage element C12a first transistor MP1 second transistor MP2 first image output line OUT1 second image output line OUT2 [present invention]

Control unit 21 image capturing unit 231~23n first image capturing unit 231 second image capturing unit 232 nth image capturing unit 23n displacement register 241~24n resolution control unit 25 signal combining unit 27 first control Signal RST Second Control Signal SHR Third Control Signal SHS Fourth Control Signal CLK 18 1328389 First Image Output Line OUTP Second Image Output Line OUTN Resolution Control Signal CC1~cc〗1TM

Output control signal TG1 TGTGn optical signal conversion unit 2311 reset power supply Vrst operational amplifier 011 image sensing element D1 first switch S11 second switch S12 third switch S13 fourth switch S14 fifth switch S15 first electrical storage element C11 Two electrical storage components C12 signal combining unit 27A double-ended input double-ended output operational amplifier 027 sixth switch S6 seventh switch S7 capacitor C271 capacitor C272 first signal receiving terminal IN1 second signal receiving terminal IN2 first output terminal 0T1 19 1328389 Second output terminal 0T2 signal combining unit 27B first operational amplifier 0271 second operational amplifier 0272 eighth switch S8 ninth switch S9 capacitor C273 capacitor C274 first signal receiving terminal IN71 second signal receiving terminal IN72 first output terminal 0T71 second Output OT72 fixed bias Vref

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Claims (1)

Amendment page 10 of April 9th, the scope of patent application _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The first horse stupid money is connected to the image capturing units for combining and controlling the i number and combining the second image signals; the unit is connected to the enchantment unit to extract the unit material signal combining elements; The capturing unit and the signal are combined into a single control unit, and the signal is used to === (4) two signal transmissions -=== is connected to the displacement registers, _ different solutions = control signals, control The displacement registers are configured to switch the image data to the signal combining unit/the tiger and the first: round 2 self-resolution control signals to control the analysis. This output control signal is generated. JdX two-displacement register 'The item (4) resolution switch electric power gossip. The sorrows of the image capture unit are used - the knife is replaced by a switch, and the switch and the electrical storage are used. 21 4 1.328389 _ April 9 99 99 曰 correction replacement page. The circuit of the component, the first image signal and the second The image signal is delivered to the signal combining unit in the form of a charge. 5. The image sensor resolution switching circuit of claim 4, wherein the image capturing units each include: an optical signal conversion unit that receives the first control of the control unit a signal for capturing the image and generating the first image signal and the second image signal; a second switch connecting the optical signal conversion unit to receive a second control signal of the control unit® to store the signal The first image signal is connected to the first electrical storage component; the third switch is connected to the optical signal conversion unit, and receives a third control signal of the control unit to store the second image signal in a second electrical storage component. a fourth switch is connected to the second switch, the first electrical storage component and a first image output line, and receives an output control signal corresponding to the displacement register to control the first image signal Outputting to the signal combining unit via the first image output line; and a fifth switch connecting the third switch, the second electrical storage component and a second image output Road, receiving the output control signal to control the second image signal is outputted to the signal combining unit via the output line of the second image. 6. The image sensor resolution switching circuit of claim 5, wherein the optical signal conversion unit comprises: an image sensing component for sensing the image to generate the first image Signal and the second image signal; 22 1328389 Amendment page 1 of the first switch on April 9, 1999, is connected to a reset voltage and the image sensing unit, and receives the first control signal to the optical signal The conversion unit resets and senses the image, and an operational amplifier is connected to the image sensing unit for amplifying the first image signal and the second image signal, and after the amplification, transmitting the second switch An image signal is stored in the first electrical storage component, and the second image signal is stored in the second electrical storage component through the third switch. 7. The image sensor resolution switching circuit of claim 1, wherein the signal combining unit comprises a double-ended input double-ended output operational amplifier for receiving the first image signals and the The second image signals are combined with the first image signals and combined with the second image signals. 8. The image sensor resolution switching circuit of claim 7, wherein the signal combining unit further comprises: a sixth switch connected to the first of the double-ended input double-ended output operational amplifiers Receiving, by the image signal input end and the first output end, a fourth control signal of the control unit, to reset the line connecting the first image signal between the signal combining unit and the image capturing units; and a seventh switch is connected to the second image signal input end and the second output end of the double-ended input double-ended output operational amplifier, and receives the fourth control signal to merge the signal combining unit with the images The lines connecting the second image signals between the units are reset. 23 1328389, the image paging page of claim i, wherein the signal combining unit is configured to switch the power-first operational amplifier for receiving the first image signals; and the shirt image The signal and the combination - the second operational amplifier 'is configured to receive the second image signals. ~ shirt image signal and merger 10, as described in item 9 of the patent scope a circuit, wherein the signal combining unit is provided, the device resolution switching amplifier and the second computing device, the signal of the fixed image is applied to the first image signal and the second gentleman is merged The first shadows 11, such as the shadow signals described in claim 9 of the patent application. Road, wherein the signal merging unit further comprises: the 黾 器 解析 解析 解析 切换 切换 逻 逻 逻 逻 The input end and the output end receive the control f-image signal to merge the signal into the unit fish, the fourth-fourth control signal, the first-image signal line; the page-taking unit transmits the ninth switch, Connected to the second operational amplification # number input and output, connected - ~ like the 从 从 - &gt; cloth} industrial market number, to the position amp &amp; and early 7 &quot; with these images 撷Take the inter-unit transfer to talk about the line of this image signal to reset. . ~ Two brothers and one shirt 12. If the patent application scope is the first, the image capture single-image sensor resolution switch is early. The 70 series is arranged in a linear structure. - image sensor resolution switching method, step by step to obtain an image to generate a plurality of first image signals and a plurality of second 24 13 1328389 14 15 16 April 9, 99 modified replacement page image signal; The resolution control unit generates a required resolution control signal; according to the resolution control signal, the displacement register generates a plurality of output control signals for controlling the first image signals by the output control signals And outputting the second image signals; and combining the first image signals and combining the second image signals. The image sensor resolution switching method according to claim 13, wherein if the output control signals are a plurality of (n) groups and are simultaneously output, the resolution is determined by the output control signals. One of several (η) points at the time of output. The image sensor resolution switching method of claim 13, further comprising combining the first image signals and combining the second image signals, and calculating and combining the first image signals a difference between a combined signal and a second combined signal after combining the second image signals. The image sensor resolution switching method of claim 13, wherein the first image signals and the second image signals are outputted in the form of electric charges. The image sensor resolution switching method of claim 13, wherein the first image signal and the second image signals are output, and a fourth control signal is received to transmit the A line of image signals and the second image signals are reset. For example, the image sensor resolution switch described in claim 13 is applicable to the method of correcting replacement pages on April 9, 1999, wherein the output control signals are timing control signals corresponding to the resolution of the image sensor. And sequentially transmitting the first image signals and the second image signals according to the resolution. 19. The image sensor resolution switching method according to claim </ RTI> wherein the number of the resolution control signals is 21^1, which is increased or decreased according to the number of segments of the resolution switching segment m. 26