CN221151422U - Five-color light scanner - Google Patents
Five-color light scanner Download PDFInfo
- Publication number
- CN221151422U CN221151422U CN202322863084.9U CN202322863084U CN221151422U CN 221151422 U CN221151422 U CN 221151422U CN 202322863084 U CN202322863084 U CN 202322863084U CN 221151422 U CN221151422 U CN 221151422U
- Authority
- CN
- China
- Prior art keywords
- emitting diode
- light emitting
- unit
- data processing
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
- 101150016871 LTI6B gene Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
Abstract
The utility model discloses a five-color light scanner, and relates to the technical field of scanners. The device specifically comprises a control unit, a light source, a CIS sensor unit, a conversion unit, a data processing unit and an upper computer, wherein the control unit is electrically connected with the light source, the conversion unit and the data processing unit, and the light source comprises a red light emitting diode, a green light emitting diode, a blue light emitting diode, an infrared light emitting diode and an ultraviolet light emitting diode; the CIS sensor unit is provided with R, G and B channels for outputting analog signals. The CIS (contact image sensor) scanning mode is adopted, the scanner outputs image digital information according to the CCD (charge coupled device) mode, the hardware connection and the control logic connection are changed, three (white light, infrared and ultraviolet) images can be simultaneously acquired by one scanning, and the infrared and ultraviolet images are all color mode images.
Description
Technical Field
The utility model relates to the technical field of scanners, in particular to a five-color light scanner which acquires three image data of white light (containing R, G, B primary color images), infrared and ultraviolet through one-time scanning.
Background
The scanner comprises five parts, namely a photoelectric conversion part, a light source part, an A/D converter, a control main board and a mechanical transmission part. The photoelectric conversion part is the core of the scanner and mainly comprises a CCD (charge coupled device) or a CIS (contact image sensor).
After the light source emits light and is focused by reflection and transmission, the CCD converts the sensed light into a voltage signal, and the intensity of the light corresponds to the voltage. The CCD needs a set of precisely matched optical systems to convert the sensed optical signals into analog electrical signals, which are then processed into digital signals by an A/D converter (Analog to Digital Converter, A/D).
Based on the RGB color pattern, the red primary color image, the green primary color image, and the blue primary color image are synthesized to obtain an image corresponding to the color. The primary color image only contains corresponding monochromatic information, corresponds to RGB color modes, and R1R2R3 … … Rn, G1G2G3 … … Gn and B1B2B3 … … Bn are arranged and combined to obtain R1G1B 1R 2G2B 2R 3G3B3 … … RnGnBn, and are respectively stored as corresponding pictures through a control system.
Unlike CCD, CIS integrates scanning light source, sensor and amplifier, and converts the light signal into analog signal after the light source irradiates the scanning manuscript to be sensed, and the A/D converter on the main board of scanner converts the signal into digital signal for transmission to computer.
Under the general condition, the scanner can only collect images under white light, and along with the wide application of the scanner, particularly in the fields of finance, securities, security, customs, airports and the like, the scanner collects images of anti-counterfeiting notes, ultraviolet images and license certificates, is used for trusted transaction, authenticity identification, information collection and the like, and the common scanner cannot meet application requirements.
Disclosure of utility model
The main object of the present utility model is to propose a scanner, a device capable of obtaining white light, infrared and ultraviolet images simultaneously in one scan.
According to the utility model, a five-color light scanner is provided, which comprises a control unit, a light source, a CIS sensor unit, a conversion unit, a data processing unit and an upper computer, wherein the control unit is electrically connected with the light source, the conversion unit and the data processing unit, the CIS sensor unit is electrically connected with the conversion unit,
The light source comprises a red light emitting diode, a green light emitting diode, a blue light emitting diode, an infrared light emitting diode and an ultraviolet light emitting diode;
The CIS sensor unit is provided with an R channel, a G channel and a B channel for outputting analog signals.
Preferably, the light source is integrated on the CIS sensor unit, and the control unit controls the red light emitting diode, the green light emitting diode, and the blue light emitting diode to be simultaneously turned on or off, and sequentially turned on or off with the infrared light emitting diode and the ultraviolet light emitting diode.
Preferably, the conversion unit is provided with R, G, and B channels corresponding to the R, G, and B channels of the CIS sensor unit.
Preferably, the CIS sensor unit senses the reflected light of the manuscript and outputs an analog signal through the R channel, the G channel and the B channel, the conversion unit receives the analog signal sent by the CIS sensor unit, converts the analog signal into a digital signal and outputs the digital signal to the control unit, and the control unit receives the digital signal from the conversion unit and outputs the digital signal to the data processing unit and the upper computer.
Preferably, the conversion unit, the control unit and/or the data processing unit support RGB or BGR sequential data modes.
Preferably, the data processing unit processes the data and then outputs the data to the upper computer in three parts (in a single-sided scanning state) or six parts (in a double-sided scanning state) simultaneously.
Preferably, the image synthesized or stored by the control unit and/or the data processing unit is a color mode image.
According to the technical scheme, a CIS (contact image sensor) scanning mode is adopted, image digital information is output according to a CCD (charge coupled device) mode scanner, an infrared light emitting diode and an ultraviolet light emitting diode are added on the original scanner, hardware connection and control logic connection are changed, three (white light, infrared light and ultraviolet light) images can be simultaneously acquired through one-time scanning, and the infrared light and ultraviolet light images are color mode images, so that multifunctional scanning is realized, and convenience and rapidness are realized.
Drawings
The drawings that accompany the description can be briefly described as follows, with reference to the embodiments or prior art descriptions, and are apparent for illustrative purposes only and are not intended to limit the scope of the utility model.
FIG. 1 is a block diagram of a scanning mode of a five-color scanner according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram (I) of the hardware physical connection (CIS internal structure) of a five-color scanner according to an embodiment of the present utility model;
Fig. 3 is a schematic diagram of the hardware physical connection (motherboard connection) of the five-color scanner according to the embodiment of the present utility model (second).
Reference numerals illustrate:
11. A control unit; 12. a light source; 13. a CIS sensor unit; 14. a conversion unit; 15. a data processing unit; 16. and an upper computer.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.
The application provides a five-color light scanner combining the characteristics of CCD and CIS scanning modes, and the scanning modes are shown in figure 1. Comprises a control unit 11, a light source 12, a CIS sensor unit 13, a conversion unit 14, a data processing unit 15 and an upper computer 16.
The control unit 11 is electrically connected with the light source 12, the conversion unit 14 and the data processing unit 15, and the CIS sensor unit 13 is electrically connected with the conversion unit 14.
The light source 12 includes five light sources of r_led (red primary), g_led (green primary), b_led (blue primary), ir_led (infrared) and uv_led (ultraviolet), i.e., red light emitting diode, green light emitting diode, blue light emitting diode, infrared light emitting diode and ultraviolet light emitting diode, wherein r_led (red primary), g_led (green primary) and b_led (blue primary) are simultaneously turned on or off, and white light is synthesized when r_led (red primary), g_led (green primary) and b_led (blue primary) are simultaneously turned on.
The control unit 11 sequentially controls white light (synthetic light), infrared light and ultraviolet light to be sequentially turned on and off, the CIS sensor unit 13 senses reflected light of the manuscript and outputs analog signals through the R channel, the G channel and the B channel, the conversion unit 14 receives the output analog signals from the CIS sensor unit 13R channel, the G channel and the B channel and converts the output analog signals into digital signals to be output to the control unit 11, the control unit 11 outputs the received digital signals to the data processing unit 15 to be processed, and finally the processed data is transmitted to the upper computer 16.
The control unit 11 is for a dedicated integrated circuit chip (ASIC), which is controlled by circuitry to effect switching of the light sources 12 (white light, infrared and ultraviolet).
As can be seen, the CIS sensor unit 13 takes time to process the sensed signal, and the R, G, and B channels of the CIS sensor unit 13 output the first effective analog signals at the next lighting. The control unit 11 controls r_led (red primary), g_led (green primary) and b_led (blue primary) to be simultaneously lighted to form white light, the CIS sensor unit 13 senses reflected light of the manuscript and outputs an inactive signal through R, G and B channels, the control unit 11 controls ir_led (infrared) to be lighted (white light, infrared and ultraviolet are sequentially lighted), the CIS sensor unit 13 senses reflected light of the manuscript and outputs a white light analog signal through R, G and B channels, the control unit 11 controls uv_led (ultraviolet) to be lighted, the CIS sensor unit 13 senses reflected light of the manuscript and outputs an infrared analog signal through R, G and B channels, and then scans information of the next manuscript, the control unit 11 controls white light (synthesized light) to be lighted, the CIS sensor unit 13 senses reflected light of the manuscript and outputs an ultraviolet analog signal through R, G and B channels, the control unit 11 controls light source switching, and the CIS sensor unit 13 senses reflected light of the manuscript and outputs an analog signal through R, G and B channels.
The analog signal output from the CIS sensor unit 13 is converted into a digital signal through the corresponding R, G, and B channels on the conversion unit 14 and output to the control unit 11.
The conversion unit 14 is an Analog Front End (AFE) that converts an analog signal into a digital signal, and controls signal-to-noise ratio, signal-to-noise distortion, and linearity, and is relatively common in the analog front end including an AD984x series, an AD9923A series, an LM98640 series, and the like.
The conversion unit 14 converts the analog signal into a digital signal and outputs it to the control unit 11. The data arrangement form has an RGB order or a BGR order, wherein: w: white light; i: infrared; u: ultraviolet; ln: and the nth row of manuscript.
First arrangement (RGB order):
WR(L1,1)WG(L1,1)WB(L1,1)WR(L1,2)WG(L1,2)WB(L1,2)……WR(L1,n)WG(L1,n)WB(L1,n)
IR(L1,1)IG(L1,1)IB(L1,1)IR(L1,2)IG(L1,2)IB(L1,2)……IR(L1,n)IG(L1,n)IB(L1,n)
UR(L1,1)UG(L1,1)UB(L1,1)UR(L1,2)UG(L1,2)UB(L1,2)……UR(L1,n)UG(L1,n)UB(L1,n)
WR(L2,1)WG(L2,1)WB(L2,1)WR(L2,2)WG(L2,2)WB(L2,2)……WR(L2,n)WG(L2,n)WB(L2,n)
……
UR(Ln,1)UG(Ln,1)UB(Ln,1)UR(Ln,2)UG(Ln,2)UB(Ln,2)……UR(Ln,n)UG(Ln,n)UB(Ln,n)
Second arrangement (BGR order):
WB(L1,1)WG(L1,1)WR(L1,1)WB(L1,2)WG(L1,2)WR(L1,2)…WB(L1,n)WG(L1,n)WR(L1,n)
IB(L1,1)IG(L1,1)IR(L1,1)IB(L1,2)IG(L1,2)IR(L1,2)…IB(L1,n)IG(L1,n)IR(L1,n)
UB(L1,1)UG(L1,1)UR(L1,1)UB(L1,2)UG(L1,2)UR(L1,2)…UB(L1,n)UG(L1,n)UR(L1,n)
WB(L2,1)WG(L2,1)WR(L2,1)WB(L2,2)WG(L2,2)WR(L2,2)…WB(L2,n)WG(L2,n)WR(L2,n)
……
UB(Ln,1)UG(Ln,1)UR(Ln,1)UB(Ln,2)UG(Ln,2)UR(Ln,2)…UB(Ln,n-1)UG(Ln,n-1)UR(Ln,n-1)UB(Ln,n)UG(Ln,n)UR(Ln,n)
The control unit 11 receives the digital signals from the conversion unit 14 and rearranges the digital signals, and the function may be completed by the data processing unit 15, and the rearranged data is output to the upper computer 16, and the corresponding scan picture is obtained by the application software of the upper computer 16.
The control unit 11 or the data processing unit 15 processes the digital signal into corresponding light source information data to obtain white light data, infrared data and ultraviolet data, respectively, and the data arrangement form has an RGB sequence or a BGR sequence. Wherein: w: white light; i: infrared; u: ultraviolet; ln: and the nth row of manuscript.
First data: white light data
WR(L1,1)WG(L1,1)WB(L1,1)WR(L1,2)WG(L1,2)WB(L1,2)……WR(L1,n)WG(L1,n)WB(L1,n)
WR(L2,1)WG(L2,1)WB(L2,1)WR(L2,2)WG(L2,2)WB(L2,2)……WR(L2,n)WG(L2,n)WB(L2,n)
……
WR(Ln,1)WG(Ln,1)WB(Ln,1)WR(Ln,2)WG(Ln,2)WB(Ln,2)……WR(Ln,n)WG(Ln,n)WB(Ln,n)
Second data: infrared data
IR(L1,1)IG(L1,1)IB(L1,1)IR(L1,2)IG(L1,2)IB(L1,2)……IR(L1,n)IG(L1,n)IB(L1,n)
IR(L2,1)IG(L2,1)IB(L2,1)IR(L2,2)IG(L2,2)IB(L2,2)……IR(L2,n)IG(L2,n)IB(L2,n)
……
IR(Ln,1)IG(Ln,1)IB(Ln,1)IR(Ln,2)IG(Ln,2)IB(Ln,2)……IR(Ln,n)IG(Ln,n)IB(Ln,n)
Third data: ultraviolet data
UR(L1,1)UG(L1,1)UB(L1,1)UR(L1,2)UG(L1,2)UB(L1,2)……UR(L1,n)UG(L1,n)UB(L1,n)
UR(L2,1)UG(L2,1)UB(L2,1)UR(L2,2)UG(L2,2)UB(L2,2)……UR(L2,n)UG(L2,n)UB(L2,n)
……
UR(Ln,1)UG(Ln,1)UB(Ln,1)UR(Ln,2)UG(Ln,2)UB(Ln,2)……UR(Ln,n)UG(Ln,n)UB(Ln,n)
It is known that the arrangement mode of the corresponding light source information data may be BGR order.
First data: white light data
WB(L1,1)WG(L1,1)WR(L1,1)WB(L1,2)WG(L1,2)WR(L1,2)……WB(L1,n)WG(L1,n)WR(L1,n)
WB(L2,1)WG(L2,1)WR(L2,1)WB(L2,2)WG(L2,2)WR(L2,2)……WB(L2,n)WG(L2,n)WR(L2,n)
……
WB(Ln,1)WG(Ln,1)WR(Ln,1)WB(Ln,2)WG(Ln,2)WR(Ln,2)……WB(Ln,n)WG(Ln,n)WR(Ln,n)
Second data: infrared data
IB(L1,1)IG(L1,1)IR(L1,1)IB(L1,2)IG(L1,2)IR(L1,2)……IB(L1,n)IG(L1,n)IR(L1,n)
IB(L2,1)IG(L2,1)IR(L2,1)IB(L2,2)IG(L2,2)IR(L2,2)……IB(L2,n)IG(L2,n)IR(L2,n)
……
IB(Ln,1)IG(Ln,1)IR(Ln,1)IB(Ln,2)IG(Ln,2)IR(Ln,2)……IB(Ln,n)IG(Ln,n)IR(Ln,n)
Third data: ultraviolet data
UB(L1,1)UG(L1,1)UR(L1,1)UB(L1,2)UG(L1,2)UR(L1,2)……UB(L1,n)UG(L1,n)UR(L1,n)
UB(L2,1)UG(L2,1)UR(L2,1)UB(L2,2)UG(L2,2)UR(L2,2)……UB(L2,n)UG(L2,n)UR(L2,n)
……
UB(Ln,1)UG(Ln,1)UR(Ln,1)UB(Ln,2)UG(Ln,2)UR(Ln,2)……UB(Ln,n)UG(Ln,n)UR(Ln,n)
And then the corresponding data containing image information is stored into corresponding color, infrared and ultraviolet pictures through the application software of the upper computer 16.
The data is processed by the data processing unit and then is divided into three parts (single-sided scanning state) or six parts (double-sided scanning state) to be simultaneously output to the upper computer, and the image synthesized or stored by the control unit and/or the data processing unit is a color mode image.
The light source 12 may be a cathode fluorescent light source or a halogen light source, and the white light LED may be mixed to form white light by using a plurality of complementary color LED light emitting diodes, or may be coated with a corresponding fluorescent powder to form white light. The blue LED can obtain white light by exciting Yttrium Aluminum Garnet (YAG) fluorescent powder. In the embodiment, the red light emitting diode, the green light emitting diode and the blue light emitting diode are utilized to be simultaneously turned on and mixed into white light.
The red light-emitting diode, the green light-emitting diode and the blue light-emitting diode are taken as a group, and form three groups of light sources with five colors together with the infrared light-emitting diode and the ultraviolet light-emitting diode. When scanning is performed, the three groups of light sources are switched and lightened sequentially, and the image data under the irradiation of the corresponding light sources can be obtained according to the white light, infrared light and ultraviolet light.
Different information features of manuscripts can be highlighted under the irradiation of different light sources, such as anti-counterfeiting marks can be displayed under the irradiation of ultraviolet, and red information on the manuscript can be filtered under the infrared condition.
The five-color light scanner in the embodiment is also matched with a transmission system to drive the manuscript to move so as to complete the scanning of the whole manuscript.
The transmission system comprises a stepping motor and a servo motor, wherein the stepping motor can control the angular displacement of the motor through pulse signals, so that the rotating speed and the acceleration of the motor are controlled, and the purpose of accurate positioning is achieved. The servo motor converts the voltage signal into torque and rotating speed, and can accurately control the movement position and movement speed.
The application also discloses a system for connecting the hardware control logic,
In fig. 2, VOUT-R, VOUT-G, VOUT-B is three analog data segments output in parallel, VDD is a power input pin, VLED1, VLED2 are power input pins, GND is ground, CLK is an acquisition clock, RS is an image resolution analog-to-digital pin, and SP is a start pulse signal (acquisition synchronization signal).
D4 is a UV (ultraviolet) light emitting diode, D5 is an IR (infrared) light emitting diode, D6 is a BLUE light emitting diode, D7 is a RED light emitting diode, D8 is a GREEN light emitting diode, R201-R207 are resistors, and led_uv, led_ir, led_ R, LED _g, and led_b are respective light source control pins.
In fig. 2, the respective light source control pins led_ R, LED _g and led_b of the red light emitting diode D7, the green light emitting diode D8 and the blue light emitting diode D6 are connected to the control signal led_r pin at the main board end (in fig. 3) of the scanner through FFC lines, the control pin of the infrared light emitting diode D5 is connected to the control signal led_g pin, and the control pin of the ultraviolet light emitting diode D4 is connected to the control signal led_b pin. White light (red light emitting diode D7, green light emitting diode D8 and blue light emitting diode D6 are simultaneously lit), infrared light emitting diode D5 and ultraviolet light emitting diode D4 are sequentially lit by control unit 11, light source irradiates manuscripts and reflects to image sensor, analog signals of manuscripts image are output through R channel, G channel and B channel respectively, finally conversion unit 14 converts into digital signals, and corresponding white light image, infrared image and ultraviolet image are obtained through image processing module respectively.
In the above embodiment, the image digital information is output according to the Charge Coupled Device (CCD) scanner by using the Contact Image Sensor (CIS) scanning mode, and the infrared light emitting diode and the ultraviolet light emitting diode are added on the original scanner, so that the hardware connection and the control logic connection are changed, and the multifunctional scanning can be realized, thereby being convenient and quick.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (8)
1. The five-color light scanner comprises a control unit (11), a light source (12), a CIS sensor unit (13), a conversion unit (14), a data processing unit (15) and an upper computer (16), wherein the control unit (11) is electrically connected with the light source (12), the conversion unit (14) and the data processing unit (15), and the CIS sensor unit (13) is electrically connected with the conversion unit (14), and is characterized in that:
The light source (12) comprises a red light emitting diode, a green light emitting diode, a blue light emitting diode, an infrared light emitting diode and an ultraviolet light emitting diode;
The CIS sensor unit (13) is provided with an R channel, a G channel and a B channel for outputting analog signals.
2. The five-color light scanner according to claim 1, wherein the light source (12) is integrated onto the CIS sensor unit (13), and the control unit (11) controls the red light emitting diode, the green light emitting diode, the blue light emitting diode to be turned on or off simultaneously, and sequentially turned on or off with the infrared light emitting diode and the ultraviolet light emitting diode.
3. The five-color light scanner according to claim 1, wherein the conversion unit (14) is provided with R, G, and B channels corresponding to R, G, and B channels of the CIS sensor unit (13).
4. The five-color light scanner according to claim 1, wherein the CIS sensor unit (13) senses the reflected light of the manuscript and outputs analog signals through the R channel, the G channel and the B channel, the conversion unit (14) receives the analog signals from the CIS sensor unit (13) and converts the analog signals into digital signals and outputs the digital signals to the control unit (11), and the control unit (11) receives the digital signals from the conversion unit (14) and outputs the digital signals to the data processing unit (15) and the host computer (16).
5. The five-color light scanner as claimed in claim 4, characterized in that the conversion unit (14), the control unit (11) and/or the data processing unit (15) support RGB or BGR sequential data modes.
6. The five-color light scanner according to claim 4, wherein in the single-sided scanning state, the data processing unit (15) processes the data to three parts and outputs the three parts to the host computer (16).
7. The five-color light scanner according to claim 4, wherein in the double-sided scanning state, the data processing unit (15) divides the data into six parts and outputs the six parts to the upper computer (16) at the same time.
8. The five-color light scanner as claimed in one of claims 5 to 7, characterized in that the image synthesized or stored by the control unit (11) and/or the data processing unit (15) is a color mode image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322863084.9U CN221151422U (en) | 2023-10-24 | 2023-10-24 | Five-color light scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322863084.9U CN221151422U (en) | 2023-10-24 | 2023-10-24 | Five-color light scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221151422U true CN221151422U (en) | 2024-06-14 |
Family
ID=91418580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322863084.9U Active CN221151422U (en) | 2023-10-24 | 2023-10-24 | Five-color light scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221151422U (en) |
-
2023
- 2023-10-24 CN CN202322863084.9U patent/CN221151422U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6172352B1 (en) | Sensing module for accelerating signal readout from image sensors | |
| CN100469093C (en) | Color image sensor unit and image reading device using the sensor unit and control method therefor | |
| CN1333573C (en) | Image scanning device and its control method | |
| US20180309903A1 (en) | Signal processing apparatus, image processing apparatus, and signal processing method | |
| US20080068467A1 (en) | Signal processing integrated circuit, image reading device, and image forming apparatus | |
| US8482823B2 (en) | Contact-type image scanner and scan controlling method thereof | |
| CN103561190B (en) | Image reading device and system | |
| US4812900A (en) | Original reading apparatus with light source switching without a switching circuit | |
| USRE43511E1 (en) | Device and method for digitizing a serialized scanner output signal | |
| CN221151422U (en) | Five-color light scanner | |
| US20020030837A1 (en) | Image scanning apparatus, storage medium for storing controlling procedure of image scanning apparatus, and control program for image scanning apparatus | |
| US6646682B1 (en) | Linear tri-color image sensors | |
| JP2001028664A (en) | Image-pickup device | |
| US6818878B2 (en) | Multi-resolution charge-coupled device sensing device | |
| US20070024930A1 (en) | Scanning methods with light mixing | |
| US6222649B1 (en) | Compression by chrominance subsampling in color image acquisition | |
| US7053949B2 (en) | Charge couple device control system for scanner | |
| JPH0313166A (en) | Color reader | |
| JPS649789B2 (en) | ||
| JPH05122455A (en) | Image reader | |
| JP2000261605A (en) | Reading control method for color image scanner | |
| JPH0681220B2 (en) | Color reader | |
| JP2808114B2 (en) | Color input device | |
| JPH09247359A (en) | Color picture reader | |
| JPS5838062A (en) | Reader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |