CN2294544Y - Color Contact Image Sensor Assembly - Google Patents

Abstract

A contact image sensor assembly has a PC board on which a plurality of color contact image sensor chips are arranged and for receiving reflected light representing an image on a document. Each of the chips has a plurality of phototransistor arrays, each having a different colored membrane disposed thereon. Each array further comprises a transmission gate array connected thereto, wherein each transmission gate array comprises an output signal terminal for transmitting a color signal. A column shift register is connected to the array of transmission gates and switches the transmission gates in response to an external timing signal. An output control circuit is connected to the output signal terminal of the transmission gate array for outputting color signals, and a logic control circuit is connected to the output control circuit for controlling the output of the color signals.

Description

Color Contact Image Sensor Assembly

The utility model relates to a contact image sensor assembly, in particular to a color contact image sensor assembly.

Image sensors are currently being commonly used with optical scanners, facsimile machines, and other image processing devices for processing incoming image signals. There are two types of sensors. One is known as a Charge Coupled Device (CCD). Figure 1 shows a standard black and white CCD. The CCD consists of three main components, a light source for illuminating the document; a lens for focusing the image of the document on the image sensor, and the image sensor. Since the CCD used to scan documents is about an inch long, the lens is required to image a standard 8.5-inch paper width. The use of lenses also requires a distance of about 30 cm between the sensor and the document, thus resulting in a bulky device that is often reduced in size using complex optical systems. In addition, since the entire device needs to scan the entire length of the paper, a high-power stepping motor is required to move the device. However, the jerky motion of the motor distorts the image.

A second type of sensor, known as a Contact Image Sensor (CIS), has been developed to overcome some of the drawbacks of CCDs. Figure 2 shows a standard black and white CIS assembly. The A4 size CIS assembly measures only about 18 x 18 x 224mm and has all of the following necessary components to capture an image: (1) Hybrid image sensor board including linear silicon contact image sensor array, operational amplifiers and passive components ; (2) IED light source; (3) one-to-one lens; (4) cover glass; and (5) aluminum housing to accommodate these components. Since the length of the CIS assembly is one-to-one with the scanned document, the distance from the scanned document to the image sensor has been reduced to about 2 cm and no lens reduction system is required. Thus, CIS components are smaller in size, easy to use, and can operate at high speed with low noise, high dynamic range, and high resolution (compared to CCD).

In the past, CCDs and contact image sensors have been used to provide black and white image sensors. CCDs have recently been used to provide color image sensors. But there are above-mentioned and other defectives in color CCD. First, color CCDs require a plethora of components, such as lenses and separate light sources, and additional buffers. Second, since the CCD is not provided by a single component but consists of several parts, adjustments to the individual parts are necessary. Such adjustments are difficult and may involve non-standard handling. Third, standard CMOS processing cannot be used for wafers, and synthesis of processing methods by wafer fabs is also difficult.

Thus, there is a need for a color contact image sensor, and the purpose of the present invention is to provide a color contact sensor that has a simple and compact structure, uses a small external memory, can be manufactured cheaply, and produces high-quality color images. Image sensor components. .

In order to achieve the above-mentioned purpose of the present utility model, a contact image sensor assembly is provided, which includes a PC board, which includes a plurality of color contact image sensor chips, which are arranged on the PC board and are suitable for receiving reflections reflected from documents. The light representing the image on the file. Each color contact image sensor chip has a plurality of arrays of phototransistors, and each array of phototransistors has a diaphragm of a different color disposed thereon. Each phototransistor array further includes an array of transfer gates connected thereto, including output signal terminals for sending out color signals. A column of shift registers is connected to the transfer gate array to turn the transfer gates on and off in response to external timing signals. An output control circuit is connected to the output signal terminal of the transmission gate array for outputting the color signal, and a logic control circuit is connected to the output control circuit to control the output of the color signal.

According to the color contact image sensor chip of the present invention, further comprising: a dummy signal circuit having a plurality of dummy transmission gates, each dummy transmission gate being connected to one of the plurality of transmission gate arrays; and a dummy shift register , connected to a plurality of virtual transmission gates and turning on and off the virtual transmission gates in response to an external timing signal.

According to the color contact image sensor chip of the present utility model, further comprising: a signal input buffer for receiving an external START signal and transmitting the START signal to the shift register column; pseudo shift register and logic control circuit; and a clock The buffer is used for receiving the external clock signal and transmitting the clock signal to the shift register column, the dummy shift register and the logic control circuit.

The color contact image sensor assembly according to the present invention further includes: a light source for irradiating white light onto the document so that the image on the document is reflected onto a plurality of color contact image sensor chips. According to an embodiment of the present invention, each color contact image sensor chip has three phototransistor arrays, the first phototransistor array is provided with a green diaphragm, the second phototransistor array is provided with a blue diaphragm, and the third phototransistor array is provided with a blue diaphragm. The phototransistor array is provided with a red diaphragm. According to another embodiment of the present invention, the first phototransistor array is provided with a cyan diaphragm, the second phototransistor array is provided with a magenta diaphragm, and the third phototransistor row is provided with a yellow diaphragm. The spacing between the three phototransistor arrays is small.

The color contact image sensor module according to the first embodiment of the present invention has a parallel output circuit. The parallel output circuit has a plurality of capacitors, the number of which corresponds to the number of phototransistor arrays, and each capacitor is used to induce a voltage corresponding to a signal of one color. The parallel output circuit further includes a plurality of amplifiers, the number of amplifiers corresponding to the number of phototransistor arrays, each amplifier connected to a capacitor for amplifying the induced voltage across the corresponding capacitor. The parallel output circuit also includes a plurality of reset gates, each reset gate connected to a capacitor to reset the voltage on the corresponding capacitor.

The color contact image sensor module according to the second embodiment of the present invention has a serial output circuit. The serial output circuit has a plurality of capacitors, the number of which corresponds to the number of phototransistor arrays, and each capacitor is used to induce a voltage corresponding to a signal of one color. The serial output circuit further includes a plurality of reset gates, each reset gate connected to a capacitor to reset the voltage on the corresponding capacitor. The serial output circuit also includes a plurality of output gates, each output gate having an input connected to a capacitor. The output gates are used to control the passage of the induced voltage from the desired capacitor to an amplifier having an input connected to the output of the output gates for amplifying the induced voltage across the desired capacitor .

The color contact image sensor assembly according to the present invention has a color contact image sensor and has a simple and compact structure because a column of shift registers is used to control the on/off of the transmission gate array. The use of a single column shift register to control the transmission gates allows easy external analog-to-digital sampling of the output of the color signal to be synchronized, thereby improving the speed of the color contact image sensor and the quality of the color image. Furthermore, since the columns or arrays of phototransistors are less spaced apart, very little external memory is required. Placing a colored diaphragm over the phototransistor allows the use of white light as a light source.

FIG. 1 is a perspective view of an existing black and white charge-coupled device;

2 is a perspective view of a conventional black and white contact image sensor;

3 is a perspective view of a color contact image sensor assembly according to the present invention;

4 is a perspective view of components of the color contact image sensor assembly of FIG. 3;

5 is a cross-sectional view of the color contact image sensor assembly of FIG. 3;

6 is a block diagram of the color contact image sensor shown in FIGS. 3 and 4 according to the present utility model;

7 is a circuit diagram of the connection relationship between the phototransistor sensor and the transmission gate of the color contact image sensor of FIG. 6;

8 is a circuit diagram of a signal output circuit for a parallel arrangement of the color contact image sensor of FIG. 6;

9 is a circuit diagram of a signal output circuit for a series arrangement of the color contact image sensors of FIG. 6; and

FIG. 10 is a timing chart showing the timing of glitches related to clocks and other signals.

The following detailed description is the best design mode for carrying out the invention. This description has no limiting meaning, and is only used to illustrate the general principles of the embodiments of the present invention. The scope of the invention is defined by the appended claims.

3-5 illustrate a color contact image sensor assembly 20 according to a first preferred embodiment of the present invention. Assembly 20 includes a conventional aluminum housing 22 housing a rod lens array 24 . A PCB board is mounted on the bottom of the aluminum housing 22 and has an array of color contact image sensors 28 mounted thereon. A light source 30 , such as a cold cathode fluorescent lamp for emitting white light, is provided in the module 20 in a spaced manner from the aluminum casing 22 and the glass 32 . End caps 34 are used to clamp assembly 20 together. Light source 30 is used to shine white light onto glass 32 to reflect the image on document 36 onto rod lens array 24 for input through column of color contact image sensors 28 .

6 and 7 illustrate the color image sensor 28 . Each color contact image sensor 28 has three phototransistor arrays 40 , 42 and 44 . Each phototransistor array 40, 42 or 44 consists of a column of phototransistors 41, 43 and 45, respectively. Although the present invention uses phototransistors, photodiodes could also be used without departing from the scope of the present invention. A color film is arranged on the surface of each phototransistor array. Each array 40, 42 and 44 has a colored diaphragm of a different color. A preferred color combination according to the invention is green, blue and red. In this embodiment, one of the arrays 40, 42 or 44 is provided with a green diaphragm, the other is provided with a blue diaphragm, and the third of the arrays 40, 42 or 44 is provided with a red diaphragm. Three kinds of colored green blue or red all can be arranged on three arrays 40, 42 and 44 in other order, and do not deviate from the spirit and scope of the present utility model, as long as each array 40, 42 or 44 has the diaphragm of different color .

Although the following is the color contact image sensor of the present invention described in conjunction with the green-blue-red color diaphragm, those skilled in the art will naturally understand that other three-color combinations can be used, such as cyanine-magenta-yellow. Without departing from the spirit and scope of the utility model.

Each phototransistor sensor array 40, 42 and 44 is controlled by a corresponding parallel array 46, 48 and 50 of transfer gates 47, 49 and 51, respectively. Each transmission gate 47, 49 and 51 is made of an NMOS switch. In operation, each transmission gate, such as gate 47 in array 46, controls a corresponding phototransistor, such as phototransistor 41 in array 40, by turning on or off, so that current flows from the phototransistor and 41 through the gate. 47 leaks. This current represents the pixel signal read from file 36 . The other transmission gates control the corresponding phototransistors in the same way.

A column of shift registers 52 is connected to the three arrays 46, 48 and 50 of transfer gates 47, 49 and 51 to control the on/off operation of the transfer gates 47, 49 and 51. During operation, the column shift register 52 turns on the first column of gates 47, 49, and 51 so that the first pixel image passes from the first column of phototransistors 41, 43, and 45 to the gate shown in FIG. 8 or 9. signal output circuit. The column shift register 52 then turns off the first column of gates 47, 49 and 51, then turns on the second column of gates 47, 49 and 51, and so on until gate 47 in each array 46, 48 and 50 All columns of , 49 and 51 have been switched on and off to scan a line of the image from the document.

A signal input buffer 54 receives the external START signal SI and transmits it to the column shift register 52 , dummy shift register 56 and logic control circuit 58 . A clock buffer 55 receives an external clock signal CLK and drives the column shift register 52 , dummy shift register 56 and logic control circuit 58 .

Logic control circuit 58, clock buffer 55 and signal input buffer 54 together provide the required timing for color contact image sensor chip 28 and are used to control the output of the green, blue and red signals.

The color contact image sensor 28 according to the present invention is further provided with a dummy signal circuit for generating a dummy signal. This dummy signal is sent to the three arrays 46, 48 and 50 of gates 47, 49 and 51 to compensate for potential errors in the first pixel signal.

The basis of the spurious signal will be described below with reference to the timing diagram of FIG. 10 . In order to switch on the doors 47 , 49 and 51 , they usually detect the closure of the preceding door, ie shut off. For example, the second gate G2 (for the second pixel signal) in each array 46, 48 and 50 is triggered by detecting the turn-off of the first gate G1 (for the first pixel signal). However, the first gate G1 in each array 46, 48, and 50 does not have a previous "off" signal to detect, and the current through the first gate G1 of each array 46, 48, and 50 is unreasonable. of. Thus, a dummy signal DGL is provided so that the first gate G1 can detect the "off" signal to turn itself on.

The dummy signal circuit includes a dummy shift register 56 and three dummy transmission gates 62 , 64 and 66 . Each dummy transfer gate 62, 64 and 66 is formed from an NMOS switch, each connected to a corresponding one of the three arrays 46, 48 and 50, respectively. The dummy signal generated by dummy shift register 56 controlling dummy transfer gates 62 , 64 and 66 generates dummy signal DGL before switching on first gate G1 of arrays 46 , 48 and 50 .

An output control circuit 57 is connected to the output signal terminals of the three arrays 46, 48 and 50 of the transmission gates 47, 49 and 51, and is controlled by the chip select signal CS and the reset signal RS generated by the logic control circuit 58, to A color signal with red DSR, blue DSB and green DSG components is emitted.

The distance between the three phototransistor arrays 40, 42 and 44 is preferably small. As a non-limiting example, for a 400DPI phototransistor sensor, the distance or spacing between arrays 40, 42 and 44 is about 63.5 microns; for a 300DPI phototransistor sensor, the distance between arrays 40, 42 and 44 is 84.6 microns: for For a 200DPI phototransistor sensor, the distance between arrays 40, 42 and 44 is 127 microns. Due to the small distance between the arrays 40, 42 and 44, the color contact image sensor according to the present invention requires less external memory than a color CCD, so that the cost of the external memory for the color contact image sensor of the present invention is less than Color CCD's.

Additionally, since each array 40 , 42 and 46 has a different colored color diaphragm, standard white light can be used as the light source 30 . Therefore, the color contact image sensor of the present invention can work like a black and white contact image sensor without providing an additional color filter device.

The use of a single column shift register 52 to control the on/off switching of the three arrays 46, 48 and 50 of transfer gates 47, 49 and 51 has two benefits that are important for high-speed operation of color contact image sensors: first, The compact arrangement saves space on the chip. Second, the outputs of the green, blue and red signals can be synchronized to facilitate external analog-to-digital sampling of the signals.

The color contact image sensor 28 shown in FIGS. 6 and 7 can be implemented as a single independent contact image sensor chip, such as the chips 28a, 28b and 28c shown in FIGS. 8 and 9 . Although only three such color contact image sensor chips 28 are shown in FIGS. Chips are connected in series or in parallel on the PCB to send a color image. For example, for a 400dpi CIS set for an A4 paper width of 219 microns, 3456 pixels are required to build a contact image sensor assembly, then each chip 28 has 128 pixels, thus setting 27 color contact images on the PCB board 26 sensor chip 28 .

FIG. 8 shows a PC board 26 with the columns of color contact image sensor chips 28 arranged in parallel. The color contact image sensor chip 28 is connected to a parallel output circuit 60 . The parallel output circuit 60 has three parallel amplifiers, a first amplifier 62 , a second amplifier 64 and a third amplifier 66 . Amplifier 62 has a "+" input connected to a first color signal output (one of red, blue or green) through a resistor 70a; amplifier 64 has a "+" input connected to a second color signal output (red, blue, or green) through a resistor 70b. , blue or green) on its "+" input; amplifier 66 has a "+" input connected to the third color signal output (one of red, blue or green) through a resistor 70c. The "-" inputs of amplifiers 62, 64 and 68 are grounded through resistors 68a, 68b and 68c, respectively. Each amplifier 62, 64 and 66 has a feedback circuit in which the output of amplifier 62, 64 or 66 is connected to its "-" input through resistors 69a, 69b and 69c, respectively, to set the corresponding amplifier 62, 64 and a network gain of 66.

The first capacitor 78 is connected to the first color signal output end of the color contact image sensor chip 28, and the other end of the capacitor 78 is grounded for storing the current of the first color signal. Likewise, the second capacitor 80 is connected to the first color signal output terminal of the color contact image sensor chip 28, and the other end of the capacitor 80 is grounded for storing the current of the second color signal. The third capacitor 82 is connected to the third color signal output end of the color contact image sensor chip 28, and the other end of the capacitor 82 is grounded for storing the current of the third color signal.

Additionally, three reset gates 72, 74 and 74 are used to control the parallel output of pixel signals through amplifiers 62, 64 and 66, respectively. One end of gate 72 is connected to the first color signal output of color contact image sensor chip 28, and the other end of gate 72 is grounded. Likewise, one end of gate 74 is connected to the second color signal output of color contact image sensor chip 28, and the other end of gate 74 is grounded. One end of gate 76 is connected to the third color signal output end of color contact image sensor chip 28, and the other end of gate 76 is grounded. The control terminal of each of the three reset gates 72, 74 and 76 is connected to and driven by the external clock signal CLK to turn on the gate 72, 74 or 76 to reset the connected color signal.

During operation, when receiving the first clock signal CLK, the gates 72, 74 and 76 will be turned on to set the capacitors 78, 80 and 82 to ground so that The capacitors 78, 80 and 82 correspond to the three color signals from the color contact image sensor chip 28 representing the first pixel signal. The voltages induced on capacitors 78, 80 and 82 are then amplified by amplifiers 62, 64 and 66 and transmitted as voltage signals VPG, VPB, VPR for readout. After reading out, the next clock signal CLK will turn on reset gates 72, 74 and 76 to reset the voltages of capacitors 78, 80 and 82 to ground, so that capacitors 78, 80 and 82 are ready to represent the second The color signal of the pixel signal. The other pixels are transmitted in a similar way, driven by the clock signal CLK. After the last pixel signal of the image sensor chip 28a is read out, the tail pulse EOP is generated and fed to the next image sensor chip 28b as the start pulse SI, and the transfer procedure is repeated.

FIG. 9 shows a PC board 26 with the column of color contact image sensor chips 28 arranged in series. The color contact image sensor chip 28 is connected to a serial output circuit 90 . The serial output circuit 90 has an amplifier 92 whose "+" terminal is connected to the output terminals of the first, second and third gates 94, 96 and 98 through a resistor 93. Amplifier 92 amplifies the received signal and sequentially sends out red, blue and green color signals. The "-" input of amplifier 92 is grounded through resistor 100. Amplifier 92 has a feedback circuit in which the output terminal of amplifier 92 is connected to its "-" input terminal through resistor 101 to set the network gain of amplifier 92.

An input end of output gate 94 is connected on the first color signal output end (red, blue or green); An input end of output gate 96 is connected on the second color signal output end (red, blue or green); Output gate One input of 98 is connected to a third color output (red, blue or green). Output gates 94, 96 and 98 are connected to be controlled by signal select control lines 102, 104 and 106, respectively, to determine the signal (red, green or blue) passing through amplifier 92.

The first capacitor 108 is connected to the output end of the first color signal output of the color contact image sensor chip 28, and the other end of the capacitor 108 is grounded for storing the first color signal. Likewise, the second capacitor 110 is connected to the output end of the second color signal output of the color contact image sensor chip 28, and the other end of the capacitor 110 is grounded for storing the second color signal. The third capacitor 112 is connected to the color contact image sensor chip 28 and the other end is grounded for storing the third color signal.

In addition, three reset gates 114, 116, and 118 are used to control the output of pixel signals through output gates 94, 96, and 98, respectively. One end of gate 114 is connected to the first color signal output end of color contact image sensor chip 28, and the other end of gate 114 is grounded. One end of gate 116 is connected to the second color signal output end of color contact image sensor chip 28, and the other end of gate 116 is grounded. One end of the gate 118 is connected to the third color signal output end of the color contact image sensor chip 28, and the other end of the gate 118 is grounded. The control terminals of each of the three reset gates 114, 116 and 118 are connected to and driven by the external clock signal CLK to turn on the gates 114, 116 and 118 to reset the connected color signals.

During operation, when the first clock signal CLK is received, gates 114, 116, and 118 will turn on to set capacitors 108, 110, and 112 to ground, thereby inducing voltage, the capacitors 108, 110 and 112 correspond to the three color signals from the color contact image sensor chip 28 representing the first pixel signal. This induced voltage then passes through output gates 94 , 96 and 98 . Signal select control lines 102 , 104 and 106 will control output gates 94 , 96 and 98 to determine which signal (red, green, blue) will pass through amplifier 92 . The color signal is then amplified by amplifier 92 and sent as voltage signal VP. After readout, the latter clock signal CLK will turn on reset gates 114, 116 and 118 to reset the voltage on capacitors 108, 110 and 112 to ground, so that capacitors 108, 110 and 112 are now used to represent the second pixel The color signal of the signal. The other pixels are sent in the same way, driven by the clock signal CLK. After the signal of the last pixel of the image sensor chip 28a has been read out, the tail pulse EOP is generated and fed to the next image sensor chip 28b as the start pulse SI, and the transmission procedure is repeated.

The foregoing description is for specific embodiments of the invention, and it will be apparent that many modifications may be made without departing from the spirit thereof. As a non-limiting example, instead of the three phototransistor arrays 40, 42, and 44, two, four, or more arrays, each with a differently colored diaphragm, could be used without departing from the present invention. A new type of spirit and range.

Claims (18)

1. contact image sensor assembly, comprise a PC plate, this PC plate comprises a plurality of colored contact image sensor chips disposed thereon and is used to receive the light that reflects from file of image on the representation file, it is characterized in that each colored contact image sensor chip comprises:

A plurality of photo-transistor arrays, each photo-transistor arrays comprises that has a diaphragm of establishing different colours thereon, each photo-transistor arrays further comprises one with its transmission gate array that links to each other, and each transmission gate array comprises the output signal end that is used to transmit colour signal;

One column shift register is connected on the transmission gate array and this transmission gate connection/shutoff of switch in response to external timing signal;

One output control circuit is connected on the output signal end of transmission gate array, is same as the output colour signal; With

One logic control circuit is connected on the output control circuit to control the output of colour signal.

2. according to the assembly of claim 1, it is characterized in that each colored contact image sensor chip further comprises a false signal circuit, this false signal circuit comprises:

A plurality of virtual transmission doors, each virtual transmission door is connected on one of transmission gate array; With

A pseudo-shift register is connected on a plurality of virtual transmission doors and this virtual transmission door of switch in response to external timing signal.

3. according to the assembly of claim 2, it is characterized in that each colored contact image sensor chip also comprises a signal input buffer device, is used to receive outside START signal and sends it to column shift register, on pseudo-shift register and the logic control circuit.

4. according to the assembly of claim 3, it is characterized in that each colored contact image sensor chip further comprises a plurality of clock buffers, be used to receive external timing signal and be used for this clock signal is sent to this column shift register, this puppet shift register and this logic control circuit.

5. according to the assembly of claim 1, it is characterized in that comprising a light source, be used for white light is reflected that with handle the light of the image on the file reflexes to a plurality of colored contact image sensor chips to file.

6. according to the assembly of claim 5, it is characterized in that described a plurality of photo-transistor arrays comprises three photo-transistor arrays, wherein first photo-transistor arrays is provided with a partial veil sheet, and second photo-transistor arrays is provided with a blue diaphragm, and the 3rd photo-transistor arrays is provided with a red diaphragm.

7. according to the assembly of claim 5, it is characterized in that described a plurality of photo-transistor arrays comprises three photo-transistor arrays, wherein first photo-transistor arrays is provided with the cyanine diaphragm, and second photo-transistor arrays is provided with pinkish red diaphragm, and the 3rd photo-transistor arrays is provided with yellow diaphragm.

8. according to the assembly of claim 1, it is characterized in that comprising line output circuit in the lump, also line output circuit comprises:

A plurality of capacitors, the quantity of capacitor are corresponding to the quantity of photo-transistor arrays, and each capacitor is used to induce and the corresponding voltage of a kind of signal of colour;

A plurality of amplifiers, the quantity of amplifier are corresponding to the quantity of photo-transistor arrays, and each amplifier is connected on the capacitor, are used to be amplified in the voltage that corresponding capacitor two ends are induced; With

A plurality of reset gates, each reset gate are connected on the capacitor so that the voltage on the corresponding capacitor is broken resets.

9. according to the assembly of claim 1, it is characterized in that comprising a string line output circuit, this serial output circuit comprises:

A plurality of capacitors, the quantity of capacitor are corresponding to the quantity of photo-transistor arrays, and each capacitor is used to induce the voltage of signals corresponding to a kind of colour;

A plurality of reset gates, each reset gate are connected on the capacitor so that the voltage on the corresponding capacitor is reset;

An amplifier; And

A plurality of out gates, each out gate have the input that a same capacitor links to each other, and these out gates are used to control induced voltage passing through from required amplifier to this amplifier,

Wherein this amplifier has an input that links to each other with the output of these out gates, is used to be amplified in the voltage of being responded on the required capacitor.

10. according to the assembly of claim 1, it is characterized in that between a plurality of photo-transistor arrays, determining an interval, this interval between each photo-transistor arrays for being not more than 127 microns.

11. a contact image sensor chip is characterized in that comprising:

A plurality of photo-transistor arrays, each photo-transistor arrays comprises the different colored diaphragms of establishing thereon that have, each photo-transistor arrays further comprises one with its transmission gate array that links to each other, and each transmission gate array comprises output signal end, is used to send colour signal;

One column shift register, linking to each other also with this transmission gate array, the response external timing signal comes this transmission gate of switch;

An output control circuit, continuous with the output signal end of this transfer station array with the output colour signal; With

A logic control circuit links to each other with the output of control colour signal with this output control circuit.

12. the colored contact image sensor chip according to claim 11 is characterized in that comprising a false signal circuit, this false signal circuit comprises:

A plurality of virtual transmission doors, the same transmission gate array of each virtual transmission door links to each other; With

A pseudo-shift register, with these virtual transmission doors link to each other and in response to external timing signal come switch should void like transmission gate.

13. colored contact image sensor chip according to claim 12, it is characterized in that comprising a signal input buffer device, be used to receive an outside START signal and be used for this START signal is sent to this column shift register, this puppet shift register and this logic control circuit.

14. colored contact image sensor chip according to claim 13, it is characterized in that comprising a clock buffer, be used to receive external timing signal and be used for this clock signal is sent to this column shift register, this puppet shift register and this logic control circuit.

15. colored contact image sensor chip according to claim 11, it is characterized in that the brilliant array of stopping of these a plurality of photoelectricity comprises three photo-transistor arrays, wherein first photo-transistor arrays is provided with a partial veil sheet, second photo-transistor arrays is provided with a blue diaphragm, and the 3rd photo-transistor arrays is provided with a red diaphragm.

16. colored contact image sensor chip according to claim 11, it is characterized in that these a plurality of photo-transistor arrays comprise three photo-transistor arrays, wherein first photo-transistor arrays is provided with a cyanine diaphragm, second photo-transistor arrays is provided with a pinkish red diaphragm, and the 3rd photo-transistor arrays is provided with a yellow diaphragm.

17. a contact image sensor assembly that is used to read the image on the file comprises:

A shell;

A rod type lens array that is contained in this shell;

A glass that is used to support file;

It is characterized in that a PC plate that is located in this shell, comprise a plurality of color image sensor chips disposed thereon;

A light source is used for white light to this image, this white light by this image reflection and by by the reception of this rod type lens array to read by these colored contact image sensor chips;

18. according to the contact image sensor assembly of claim 17, it is characterized in that these a plurality of colored contact image sensor chips comprise a plurality of photo-transistor arrays, each photo-transistor arrays comprises the different colored diaphragms of establishing thereon that have.

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