CN1878227A

CN1878227A - Image reading apparatus

Info

Publication number: CN1878227A
Application number: CN 200610092386
Authority: CN
Inventors: 犬饲善裕
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2005-06-02
Filing date: 2006-06-02
Publication date: 2006-12-13

Abstract

An image reading apparatus includes: an image signal generating part reading a plurality of color components of image data from an original, and generating corresponding image signals for the respective color components; an image processing part carrying out predetermined image processing on the image signal for each of the plurality of color components; and a signal processing part outputting in sequence for each color component the respective color components of the image signals thus generated by the image signal generating part to the image processing part.

Description

Image-reading device

Technical field

The present invention relates to image-reading device, it is suitable for being applied to scanner, photocopier, facsimile equipment, digital multifunction apparatus etc.

Background technology

May mention register system, light source switched system and the color sensor system of typical coloured image fetch equipment.

The light source switched system is such system, and three kinds of colors (that is) light source, R (red), G (green) and B (indigo plant), and single line sensor (line sensor) is provided wherein is provided.For each scan line of line sensor, switch R, G and B light source.As a result, can obtain the rgb image data of every row.

The color sensor system is such system, and R, G and B three classes (pierces-parts) color lines transducer and white light source wherein are provided.For a scan line on each line sensor, read R, G and B (for the identical time of each line sensor) simultaneously.

In the light source switched system,, share single line sensor for the capable view data of each color of RGB with time-sharing format.Thereby reading speed is relatively slow.Simultaneously, owing to only handle the single passage of the view data of exporting in proper order by single line sensor, so, can simplify circuit arrangement (seeing Japanese Laid-Open Patent Application Nos.2003-319150 and 10-136154).In specification, " order output " means, is every kind of color output image data successively with behavior unit.

On the other hand, in the color sensor system, from each channel parallel output consecutive image data of three monochromatic line sensors being used for R, G and B.Thereby, can make reading speed higher relatively.Simultaneously, it is not enough that the single image treatment circuit is only arranged, and, for the consecutive image data of while parallel processing, need three image processing circuits from each passage.Thereby cost may improve.

Summary of the invention

Consider said circumstances and designed the present invention, and, the object of the present invention is to provide a kind of image-reading device, wherein, can be suitably between the increase of processing speed and cost savings, obtain compromise, so that can be by single sequence according to the image processing circuit of light source switched system, with time-sharing format handle by with a plurality of passages in the color sensor system in the consecutive image data that provide of parallel corresponding each monochrome image sensor of each color component of output simultaneously.

In order to realize this purpose, provide: picture signal generates parts, and it is from a plurality of color components of the parallel reads image data of original paper, and generation is used for the corresponding image signals of each color component; The image processing parts, it in turn carries out predetermined image to each the picture signal that is used for a plurality of color components one by one and handles; And Signal Processing Element, it for each color component and one by one in turn will output to the image processing parts by each color component that picture signal generates the picture signal that parts generate thus.

According to the present invention, because picture signal generates a plurality of color components of parts from the parallel reads image data of original paper, so guaranteed to read at a high speed.

In addition, to in turn handling each the image processing parts of view data be used for a plurality of color components one by one, Signal Processing Element is exported the picture signal of each color component in a plurality of color components, and it is generated parts by picture signal at first and reads concurrently successively one by one.Thereby the image processing parts should have can be in each configuration of handling the view data that is used for each monochromatic component.As a result, as the image processing parts, only need to be used for the monochromatic component configuration.Thus, can reduce manufacturing cost effectively.

When the detailed description when reading below in conjunction with accompanying drawing, other purpose of the present invention and further feature will become more clear.

Description of drawings

Fig. 1 shows the system configuration that comprises the image-reading device in the embodiments of the invention;

Fig. 2 shows the piece configuration of the image-reading device in the embodiments of the invention;

Fig. 3 shows the configuration of the image reading unit spare in the light source switched system;

Fig. 4 shows the configuration of the image reading unit spare in the color sensor system;

Fig. 5 shows the configuration of mixing (hybrid) the type image reading unit spare in the embodiments of the invention;

Fig. 6 shows the customized configuration of ordering parts;

Show to Fig. 7 summary the image relevant and read mechanism with the image reading unit spare of Fig. 5;

Fig. 8 shows the flow chart of operation of the ordering parts of diagram Fig. 6;

Fig. 9 shows the sequential chart of operation of the ordering parts of diagram Fig. 6;

Figure 10 shows another customized configuration of ordering parts;

Figure 11 shows the flow chart of operation of the ordering parts of diagram Figure 10;

Figure 12 shows the sequential chart of operation of the ordering parts of diagram Figure 10;

Figure 13 shows the sequential chart of operation of the ordering parts of diagram Figure 10, and they are different with Figure 12 aspect generating regularly at R, G and B;

Figure 14 shows the sequential chart of operation of the ordering parts of diagram Figure 10, and they are different with Figure 12 and 13 aspect generating regularly at R, G and B;

Figure 15 shows another customized configuration of ordering parts;

Figure 16 shows the flow chart of operation of the ordering parts of diagram Figure 15;

Figure 17 shows the sequential chart of operation of the ordering parts of diagram Figure 15;

Figure 18 shows another customized configuration of ordering parts;

Figure 19 shows the flow chart of operation of the ordering parts of diagram Figure 18; And

Figure 20 shows the sequential chart of operation of the ordering parts of diagram Figure 18.

Embodiment

Image-reading device has according to an embodiment of the invention: the color lines transducer, and it comprises and the corresponding a plurality of monochromatic line sensors of a plurality of color components; The image processing parts, it is handled carrying out predetermined image with the sequential lines view data of each color component of the time-sharing format of single passage input, and with time-sharing format output result; Data conversion component, it arranges the capable view data of each color component of a plurality of passages, wherein, by corresponding monochromatic line sensor, with the capable view data of described each color component as parallel and output simultaneously, so that in the view data of order output, arrange the capable view data of each color component with time-sharing format from reading result that target reads.

A plurality of monochrome image sensor outputs and the corresponding monochromatic row view data of red, green and blue color component with the corresponding color image sensor of each color component.

The memory time of color image sensor is corresponding with the integer multiple in the cycle of using the main scanning synchronizing signal that acts on the reference signal of handling timesharing row view data in the image processing parts.

Above-mentioned integer is 3.

Above-mentioned data conversion component can be every line output monochromatic component row view data according to the signal of specifying the output color.

During the effective period by the signal appointment of effective row of designate, above-mentioned data conversion component can predesigned order be every line output monochromatic component row view data.

Above-mentioned data conversion component can and be specified the effectively signal of the number of row according to the signal of the beginning of effective row of designate, is every line output monochromatic component row view data with predesigned order.

In this disposes according to an embodiment of the invention, will be converted to the color rows order form that is used for every kind of color from each color component of color image sensor and line output.Thus, might use the image processing circuit that is configured to the time-sharing format image data processing, as be used for image processing circuit according to the coloured image fetch equipment of light source switched system.As a result, realized simultaneously: the increase of reading speed, it reads and exports owing to the corresponding color component that is undertaken by the color image sensor according to the color sensor system is parallel; And the cost minimizing, it is because of such configuration, and wherein according to the light source switched system, the single channel image processing circuit is enough.Thus, can provide very useful image-reading device.

Describe embodiments of the invention in detail by the reference accompanying drawing.

Fig. 1 shows and comprises the system configuration of the system of image-reading device 1 according to an embodiment of the invention.

In Fig. 1, image-reading device 1 can be via PSTN 200, on PSTN 200 to/from facsimile equipment 201 transmission/reception view data.If have the interface (in this embodiment, not comprising this interface) that is used for ISDN 300, then image-reading device 1 also can be on ISDN 300 to/from facsimile equipment 301 transmission/reception view data.In addition, image-reading device 1 is connected to LAN 100, be connected to internet 400 via the router device 102 that carries out packet switching, can utilize the personal computer 402 on the internet 400, carry out the transmission/reception of view data by Email, and can be via e-mail or based on the real-time network facsimile of ITU-T proposed standard, on internet 400, carry out transmission/reception with the view data of fax through internet equipment 401.In addition, image-reading device 1 can transmit view data with personal computer (PC) 101a, 101b, 101c etc. on LAN 100.

That is to say that image-reading device 1 has various functions in multi-functional mode, as: via the scanner device that is used for bureaufax equipment, fax through internet equipment, PC 101a etc. of omnibus circuit; The printer apparatus that is used for PC 101a etc.; Photocopier etc.

Fig. 2 shows the piece configuration of image-reading device 1;

In Fig. 2, CPU 2 uses RAM 4 as the service area, controls the corresponding component of this equipment based on the control program that writes in ROM 3, carries out various data processing, carries out agreement control etc.

ROM 3 storages are used so that control the control program and the various desired data of the corresponding component of this equipment by CPU 2.

As mentioned above, CPU 2 uses RAM 4 as the service area.

The various information that the operation of EEPROM (electric erasable and programming ROM) 5 memory devices is required, even have the function that under the state that turn-offs the power supply of equipment, also keeps the content of being stored, and the SRAM (static RAM (SRAM)) or the disc driver that can be had the battery backup are replaced.

Clock circuit 6 is measured current date/time always.CPU 2 reads from clock circuit 6 via system bus 14, to obtain current date/time.

Operation and display unit 7 have the various operation keyss that are used for by user's input operation instruction, and have the display unit to user's display device mode of operation and various message.

Image reading unit spare 8 reads original paper (original), to obtain view data.The back is described its configuration in detail.

Image forming part 9 is printed on view data on the record-paper, and can have the well-known configurations of common printer.

The relevant various processing of view data that image processing parts 10 carry out and handled by image-reading device 1, as the processing of raw image data being encoded/compress, to the view data after the coding/compression decode/decompression, add the processing of the side information of the character string of date of shipping/time, date received/time for example etc.

LAN communication control unit 11 is so-called NIC (network interface unit), is connected to LAN 100, transmits ICP/IP protocol based on lan protocol by CPU 2, and thus, allows to utilize the communication of the various information of high-level protocol.

Communication control unit 12 is connected with PSTN 200 via NCU parts 13, and carries out the Control on Communication to another communication terminal.Communication control unit 12 control NCU parts 13, and detect by NCU parts 13 detected ring (ringing) potential pulses, detect dtmf signal, and carry out calling sending.In addition, communication control unit 12 has modulator-demodulator, and the data of the modulation that receives from other communication terminal are carried out demodulation, and perhaps on the contrary, modulation sends data and it is sent.Particularly, V.17 it have, corresponding modem feature V.33, V.34, V.29 and V.27ter, promptly is used for based on the low-speed modulation/demodulation device function of ITU-T proposed standard G3 facsimile control signal T.30 and the high speed modem function that is mainly used in document image data.

NCU parts 13 are connected to PSTN 200, and carry out circuit connection, call signal (ring) detection etc.

System bus 14 comprises the data/address bus that is used for above-mentioned each parts, address bus, control bus, interrupt signal line etc., is used for Data transmission betwixt.

When being configured as mentioned above, image-reading device 1 is as the transmit leg or the photocopier of scanner device, facsimile equipment, to read original image.In fact, image reading unit spare 8 is parts that carry out this process.

Before the mixed type image reading unit spare of using, carry out optimal mode of the present invention, light source switched system and color sensor system in the correlation technique are at first described as image reading unit spare 8 in description.

Fig. 3 shows the image reading unit spare 8 in the light source switched system in the correlation technique.

In Fig. 3, the image reading unit spare in the correlation technique 8 has colored CIS (contact-type imageing sensor) 20, AFE (analog front end) (AFE) 30, image processing parts 40, RGB selection circuit 50, clock generator 51 and LED and selects circuit 52.

Clock generator 51 provides the various clock signals of operation timing of the corresponding component of definition image reading unit spare 8, as line synchronizing signal, pixel synchronizing signal etc., and they is provided to corresponding component.RGB selects circuit 50 will be used for selecting any signal of RGB color component to be provided to the corresponding component that is used to obtain the capable view data of each color component of RGB successively.Particularly, LED illuminating circuit 52 drive and light by RGB select circuit from corresponding each color LED light source of each RGB component of colored CIS 20 among the color LED of color component of appointment.Analog signal processing circuit 31 read by RGB select circuit 50 appointments, be included in AFE 30 in those registers in the registers group 33 (that is, B be provided with register 33b, G are provided with register 33g and R is provided with register 33r) one is set.Deep or light correction (shading correction) parts 41 read by one among B line storage 45b, the G line storage 45g of RGB selection circuit line storage groups 45 50 appointments, image processing parts 40 and the R line storage 45r.γ correcting unit 52 reads by one among B-LUT 46b, the G-LUT 46g of RGB selection circuit look-up tables 50 appointments, image processing parts 40 (LUT) group 46 and the R-LUT 46r.Filter process parts 44 read by one among B line storage 48b, the G line storage 48g of RGB selection circuit line storage groups 48 50 appointments, image processing parts 40 and the R line storage 48r.

The line sensor of colored CIS 20 is to go the single row of sequential system output consecutive image signal.Determine to go which color component sequential system output, that (during charge storage) lights color LED light source 21 during the consecutive image signal reads each row consecutive image signal is corresponding to which color component.

Utilization is selected the LED illuminating circuit of circuit 50 controls by RGB, with R, G then B order, light color LED light source 21 with switching mode.Thereby, by line sensor 22 continuously the capable picture signals of output comprise to go sequential system corresponding to each the capable picture signal in the RGB color component, and dispose thus, the single row of color lines picture signal by the capable picture signal of three continuous each color components of RGB.

With behavior unit, as the single series of consecutive image signal, with time-sharing format handle with go sequential system from line sensor 22 as RGBRGBRGB ... the consecutive image signal and the capable picture signal of each color component exported.Thereby it is enough for it that single group subsequent process circuit is only arranged in AFE 30 and the image processing parts 40.

That is to say, utilize the Analog Processing Unit 31 of AFE 30, the dummy run phase to carrying out signal processing from the capable picture signal of line sensor 22 order output to go sequential system.In the case, following the LED luminous intensity of line direction of transducer 22 and luminous intensity is distributed between the LED with corresponding each color LED light source 21 of each RGB color component different.Thereby, by Analog Processing Unit 31 read corresponding with color component when the row of pre-treatment, in the registers group 33 those are set the register that is provided with among the register are set.Particularly, 30 pairs of output signals from the line sensor 22 of colored CIS 20 of Analog Processing Unit are carried out data sampling, offset adjusted and gain-adjusted.With reference to being stored in RGB each the value of setting among register 33r, 33g and the 33b is set, determines offset adjusted amount and gain adjustment amount (parameter).

Utilize A/D converting member 32, the consecutive image conversion of signals that will be handled thus by Analog Processing Unit 31 is corresponding digital signal.

To be input to the deep or light correcting circuit 41 of image processing parts 40 from the capable view data that A/D converting member 32 is exported continuously successively, and, at this place, so carry out deep or light correction, a feasible corresponding corresponding deep or light correction data of color component that reads and work as the row of pre-treatment from B line storage 45b, G line storage 45g and R line storage 45r.Deep or light correction data obtained, follows the line direction of transducer 22 when lighting each color component LED and read reverberation on the white reference plate luminous intensity distributes, and is stored among among B line storage 45b, G line storage 45g and the R line storage 45r corresponding one.

Subsequently, the consecutive image data of having passed through deep or light correction thus are input to γ correcting unit 42 in proper order, and at this place, corresponding one from B-LUT 46b, G-LUT 46g and R-LUT 46r is read the γ correction data, and carry out γ and proofread and correct.The γ correction data is the data that are that the γ characteristic proofread and correct each color component LED is provided with before pre-, and is stored in before pre-among among B-LUT 46b, G-LUT 46g and the R-LUT 46r corresponding one.

Subsequently, the consecutive image data of having passed through the γ correction are input to size in proper order change parts 43, and, utilize memory 47, carry out the main scanning direction size and increase/reduce processing at this place.Subsequently, the view data of handling thus is input to filter process parts 44.In filter process parts 44, each each that is respectively each color component RGB line filter of advancing is handled, as level and smooth, edge enhancing etc.At this moment, be right after at before row, row before again or more the row of front temporarily be stored in the corresponding B line storage of each color component 48b, the G line storage 48g and R line storage 48r that will read for filter process in.And, in filter process parts 44, carry out the sub scanning direction size and change (seeing Japanese Laid-Open Patent Application 2003-319150 number).

Thus, in the light source switched system, the picture signal for handling by line sensor 22 outputs only needs single passage, i.e. single set from Analog Processing Unit 31 to filter process parts 44.For the difference of the particular procedure content between each color component RGB, suitably switch above-mentioned register, line storage and look-up table betwixt.Thereby, can realize effectively that cost reduces.Yet, switch LED betwixt, and read continuously by triplex row, read for single capable color image data at every turn.Thereby the reading speed of the led light source switching mode among the colored CIS has limited the whole reading speed of image-reading device, that is, and and from the data rate of filter process parts 44 final outputs.

Next, the image reading unit spare 8 in the color sensor system of the Fig. 4 in the description correlation technique.In the configuration of the image reading unit spare 8 of Fig. 4, give identical Reference numeral to the parts identical, and omit the description that repeats with the configured parts of Fig. 3.

In Fig. 4, comprise provide with 23 pairs of the colored CCDs of 3 row imageing sensors of the corresponding colour filter of each RGB color component from read target-as the original paper lighted by white light source 24-reverberation carry out opto-electronic conversion, and, with parallel mode order output simultaneously separately corresponding to the capable picture signal of color component RGB.Clock generator 51 will be provided to each parts of image reading unit spare 8 such as defining operation various clock signals regularly such as row synchronizing clock signals, pixel synchronizing signals.

Each row picture signal of RGB that each picture processing path by AFE 30 and image processing parts 45b is parallel, processing side by side walks abreast and exports simultaneously from colored CCD 23 thus.

For example, will be input to Analog Processing Unit 31b (corresponding to the Analog Processing Unit 31 of Fig. 3), and about B resistor 33b will be set it is carried out analog from the capable picture signal of B component of colored CCD 23.Subsequently, will be input to A/D converting member 23b, and it will be converted to corresponding continuous capable view data successively, and be entered into deep or light correcting unit 41b from its capable picture signal of exporting in proper order.At this place, based on the deep or light correction data that before was stored among the B line storage 45b, and carry out deep or light correction, and be entered into γ correcting unit 42b.γ correcting unit 42b carries out γ and proofreaies and correct based on before being stored in the correction data among the B-LUT 46b.Subsequently, the data that obtained are input to size change parts 43b, the B line storage 47b that it utilizes subsequently as the service area, the size of carrying out on main scanning direction and sub scanning direction changes processing.Subsequently, the data that obtained are input to filter process parts 44b, it carries out filter process about B line storage 48b subsequently.Thus, the data that obtained are exported as the capable view data of B color component continuously from image processing parts 40.

In an identical manner, handle G and the capable picture signal of each color component of R by each picture processing path.Finally, together with the capable view data of B color component, with the data that obtained as the capable view data of each color component and from the 40 parallel outputs side by side of image processing parts.

Thus, the image in the color sensor system reads in the processing, the parallel delegation's (set of each color component monochromatic image signal of RGB) that side by side obtains color picture signal from colored CCD 23.And, because the picture processing path (comprising various image processing elements separately) of separation is provided for each color component of RGB for follow-up picture signal handles, so, realized that the high-speed color image reads.Yet, because the parallel capable picture signal of each color component of RGB of side by side handling, so, needing a plurality of passages of image processing system, this may cause cost to improve.

Suitably compromise in order between reducing owing to the cost that only needs one group of image treatment channel and reading, to obtain owing to the high processing rate of the colored CCD 23 in the parallel color sensor system that exports each color component images signal of RGB simultaneously, provide the image reading unit spare 8 of the mixed type shown in Fig. 5 to carry out optimal mode of the present invention.

Clock generator 51 in the image reading unit spare 8 of the mixed type of Fig. 5, white light source 24, colored CCD 23 and AFE 30 are identical with those parts of the color sensor system shown in Fig. 4.In addition, the image processing parts 40 of Fig. 5 have the identical configuration of configuration with the light source switched system of Fig. 3, and at this place, according to the selection instruction of selecting circuit 50 from RGB, handle each row of RGB with time-sharing format.

Yet, from the parallel output simultaneously of colored CCD 23, by AFE 30 parallelly handle simultaneously, and by parallel the capable picture signal of each group of RGB of output can not be as before by image processing parts 40 processing that only have single group image treatment channel continuously simultaneously.

For head it off, in the image reading unit spare 8 of the mixed type of Fig. 5 in an embodiment of the present invention, ordering parts 60 are provided, with after will walking abreast side by side by A/

D converting member

32b, 32g and the 32r of AFE 30, the capable view data of each color component of RGB of output is converted to the continuous data of single sequence continuously with three independent sequences, be input to the deep or light correcting unit 41 of image processing parts 40.Ordering parts 60 are with reference to the line storage of selecting circuit 50 to select according to RGB among B line storage 61b, G line storage 61g and R line storage 61r.

Ordering parts 60 have been disposed as shown in Figure 6 and particularly.Note, in Fig. 6,, will comprise that each line storage in the line storage group 61 shown in Figure 5 is depicted as them to be included in the ordering parts 60 for the purpose of simplified illustration.

Ordering parts 60 have parallel three parallel sequences of RGB of the capable view data of input simultaneously are embedded into function in the single continuous sequence of consecutive image data with time-sharing formats.Ordering parts 60 comprise: data alternative pack 64, it optionally exports delay row view data Bdel, Gdel in each continuous sequence of RGB and any among the Rdel, wherein, at first export described delay row view data Bdel, Gdel and Rdel from each separation sequence of RGB of data delay

parts

62r, 62g and 62b; And data read control assembly 63, its control data alternative pack 64.

Each data delay parts of

RGB

62r, 62g and 62b will temporarily be stored in from each dateout of RGB of AFE 30 with corresponding each line storage of each

color component

61r, 61g and 61b in.64 pairs of each color components of RGB of data alternative pack repeat to select from any the operation in the dateout of each data delay parts of

RGB

62r, 62g and 62b.Thus, subsequently, output signal is outputed to the image processing parts 40 of Fig. 5, i.e. its deep or light correcting unit 41 is as the consecutive image data output Sout of single continuous sequence.That is to say that data alternative pack 64 is exported each color component images data by data delay

parts

62r, 62g and 62b continuously from

line storage

61b, 61g and 61r.

Data read control assembly 63 generates and is used for controlling the signal of selection that reads signal regularly and be used for the input image data of control data alternative pack 64 from each data delay parts of

RGB

62r, 62g and 62b.

As mentioned above, in ordering parts 60, data delay

parts

62r, 62g and 62b via correspondence, to import data temporarily is stored among

line storage

61b, 61g and the 61r, subsequently, in case handle corresponding color component, just data delay

parts

62r, 62g and the 62b by correspondence reads the data of being stored successively, and it is outputed to data alternative pack 64.With in the substitute mode of describing, walk abreast and read each color component images data from

line storage

62r, 64g and 62b simultaneously, and subsequently, data alternative pack 64 selects its suitable to export successively in the back.

Show to Fig. 7 summary in the embodiments of the invention image relevant and read mechanism with the image reading unit spare 8 of Fig. 5.

The CCD 23 of Fig. 7 is corresponding to the colored CCD 23 of Fig. 5, and the white light source 24 of Fig. 7 is corresponding to the white light source 24 of Fig. 5.

In Fig. 7, the original paper 70 that reads on the contact glass 72 that is placed on scanner shell 71 tops by contact glass (contactglass) 72 by the CCD 23 that is disposed in the scanner shell.

Particularly, the original paper surface (in the face of the bottom surface of contact glass 72) of lighting original paper 70 by the light source 24 that is installed on first support 74 that moves along the sub scanning direction that drives by scanner motor 80, subsequently, be reflected by the mirror 76 that is installed on first support 74 from the light of its reflection, be reflected by the mirror 77 and 78 that is installed on second support 75 subsequently, by camera lens 79 optically focused, and imaging on CCD 23.23 pairs of incident lights of CCD carry out opto-electronic conversion, and, thus, with the original paper surface transformation for being the picture signal of unit with the main scanning line.

In the case, will be made as along the parallel first mobile support 74 of sub scanning direction and the translational speed of second support 75, the ratio of the translational speed of the win support 74 and second support 75 was made as 2: 1 with respect to original paper 70.Thus, light can keep constant from the distance that original paper and CCD 23 advance.

As mentioned above, white reference plate 73 is used as the target that reads as the white level benchmark when obtaining deep or light correction data.

Fig. 9 shows the timing of operation of the ordering parts 60 of Fig. 5.

In Fig. 9, lsync_p and lsync_s are illustrated in before each data delay parts of

RGB

62r, 62g and the 62b and each main scanning synchronizing signal that applies afterwards.Go out as shown, lsync_p has three times the cycle of cycle of lsync_s.For RGB three colouring component view data are outputed to the subsequent conditioning circuit that is used for every kind of color successively, making main scanning synchronizing signal lsync_s is three times of main scanning synchronizing signal lsync_p on frequency.For three color component images data of RGB being outputed in proper order the subsequent conditioning circuit of each color component, the frequency that makes main scanning synchronizing signal lsync_s is three times of main scanning synchronizing signal lsync_p.Thus, before data delay

parts

62r, 62g and the 62b and afterwards, the frequency that makes the main scanning synchronizing signal is three times.

Notice that the main scanning synchronizing signal is corresponding with the timing controling signal of the timing of control chart image signal.

Provide by the clock generator 51 with known double frequency function (synchronizing signal generative circuit) and to have the different frequency synchronizing signal in (cycle) thus.

Rin, Gin and Bin represent from the consecutive image data of each A/

D converting member

32r, 32g and 32b output.Rdel, Gdel and Bdel represent the output image data of data delay

parts

62r, 62g and 62b respectively.Sout represents to output to from data alternative pack 64 the consecutive image data of deep or light correcting unit 41 of the image processing parts 40 of Fig. 5.Will parallel capable view data Rin, the Gin of output, Bin temporarily be stored in

line storage

61r, 61g and the 61b via data delay

parts

62r, 62g and 62b continuously simultaneously from AFE 30 with lsync_p synchronised ground or in its each cycle.Subsequently, with lsync_s synchronised ground or in its each cycle, export the row view data successively in order continuously from each

line storage

61r, 61g and 61b.Because lsync_p is three times of lsync_s on the cycle, so the charge storage time among the CCD 23 of can guaranteeing is three times lsync_s.

The single color component that only is used for every lsync_s cycle from the capable view data of each

line storage

61r, 61g and 61b output.Data alternative pack 64 is obtained among current Rdel to its input, Gdel and the Bdel, and exports as Sout.Thus, will be converted to capable consecutive image data from the RGB parallel image data of AFE 30.

In the above description, mentioned R, the G example of the order of B then, yet different modes is determined the order of line sequential signal arbitrarily.

Fig. 8 shows the flow chart of the operating process of diagram ordering parts 60.

In step S101, with main scanning synchronizing signal lsync_p synchronised ground input RGB three colouring component view data.In step S102, subsequently, by data delay

parts

62r, 62g and 62b respectively with image data storage in each

line storage

61r, 61g and 61b.

In step S103, subsequently, with three times of main scanning synchronizing signal lsync_s synchronised ground, of the correspondence from

line storage

61r, 61g and 61b, order reads each color component master's of being stored among

line storage

61r, 61g and the 61b each view data.Repeat this operation ("Yes" among the step S104) for the RGB color component, and subsequently, the view data of next input is carried out identical processing (step S101 to S104).

As a result, as shown in Figure 9, with three times speed, parallel each color component images data of input simultaneously of output according to every row, each color component and successively.

Thus, in an embodiment of the present invention, to be converted to such form with the capable view data of each color component of RGB of three sequence order outputs simultaneously from the colored CCD the color sensor system 23 is parallel, wherein, in the single sequence of consecutive image data, comprise the capable view data of each color component of RGB with time-sharing format.Afterwards, the view data that is obtained is input to the image processing parts 40 of Fig. 5 of light source switched system.As a result, might reduce and the high processing rate that obtains owing to read in the processing colored CCD 23 in the parallel color sensor system that exports the capable picture signal of each color component of RGB simultaneously at image is realized between reading suitably compromise at the cost that obtains owing to only needing one group of image treatment channel.

Figure 10 shows another configuration example of ordering parts 60.Figure 12 shows the operation timing of the ordering parts 60 of Figure 10.

Except with each control signal Rs, Gs and Bs from data read control assembly 63 be input to data alternative pack 64 from, the ordering parts 60 of Figure 10 are identical with the ordering parts of Fig. 6.In data alternative pack 64, each control signal Rs, Gs and Bs are used for from selecting from each delayed image data Rdel, the Gdel of each data delay parts of

RGB

62r, 62g and 62b output and Bdel, as output Sout.

As shown in figure 12, lsync_p and lsync_s are illustrated in before data delay

parts

62r, 62g and the 62b and each main scanning synchronizing signal that applies afterwards, and, going out as shown, lsync_p has three times the cycle of cycle of lsync_s.Go out as shown, in each cycle of lsync_s, from each

line storage

61r, 61g and the parallel output simultaneously of 61b row view data.

Yet, as shown in figure 12, as T1, T2, T3, T1, T2, T3 ... and in each cycle (OK) of the lsync_s that repeats, the combination difference of output row view data.In Figure 12, go out as shown, in the row of period T 1, with respect to input image data, for R, G and B and export the data that are right after in an identical manner at before row.In the row of period T 2, export identical line data for R, simultaneously, with respect to input image data, for G and B and export the line data that is right after before.In the row of period T 3, export identical line data for R with G, simultaneously,, export the line data that is right after before for B with respect to input image data.

Among output Rdel, Gdel and Bdel from each data delay parts of

RGB

62r, 62g and 62b, data alternative pack 64 output and the Rs, the Gs that receive from data read control assembly 63 or any the picture signal the corresponding R of Bs, G and the B.Go out as shown, when the timing at Figure 12 generates Rs, Gs and Bs, in the row of period T 2, export Rdel, in the row of period T 3, export Gdel, and in the row of period T 1, export Bdel.

Figure 11 shows the flow chart of diagram by the operating process of the ordering parts 60 described with reference to Figure 12 to 14.

In step S101, with main scanning synchronizing signal lsync_p synchronised ground input RGB three colouring component view data.In step S102, subsequently, respectively by data delay

parts

62r, 62g and 62b with image data storage in each

line storage

61r, 61g and 61b.

When in step S102A, generating when reading signal by data read control assembly 63, in step S103, walk abreast side by side, with from wherein three times of main scanning synchronizing signal lsync_s synchronised ground, read the view data that is stored in each color component among

line storage

61r, 61g and the 61b.In step S103, from wherein selecting, and export as Sout by view data from the color component of the specification signal Rs, the Gs that read control assembly 63 or Bs appointment by data alternative pack 64.The RGB color component is repeated this operation ("Yes" among the step S104), and afterwards, the view data of next input is carried out identical processing (step S101 to S104).

As a result, shown among Figure 12 to 14 any, with three times speed, in every row, each color component, parallel each color component images data of input simultaneously of output successively.

Figure 13 shows the operation timing of ordering parts 60, and they are different with Figure 12 aspect the generation regularly of color component specification signal Rs, Gs and Bs.Particularly, in this example, in period T 3 row, export Rdel, in period T 1 row, export Gdel, in period T 2 row, export Bdel.

Figure 14 shows the operation timing of ordering parts 60, and they are different with Figure 12 and 13 aspect the generation regularly of color component specification signal Rs, Gs and Bs.Particularly, in this example, in period T 1 row, export Rdel, in period T 2 row, export Gdel, in period T 3 row, export Bdel.

In Figure 12,13 and 14 sequential chart, according to identical color rows reads image data (comprising the set of each color component images data of RGB), ordering parts 60 are with R, the G order output image data of B then.That is to say, under situation about switching between Rs, Gs of each row and the Bs, with R, the G order of B then, from the capable capable view data of each color component of RGB of ordering parts 60 output same colors.

In the above description, mentioned Rs, Gs, the example of the order of Bs then, yet alternate manner is determined the order of line sequential signal arbitrarily.

Figure 15 shows another configurations except Fig. 6 and 10, ordering parts 60.Figure 17 shows the sequential chart of the operation timing of these ordering parts 60 of diagram.

Except gating signal fgate is input to the data read control assembly 63, the ordering parts 60 of Figure 15 are identical with Figure 10 in configuration.

In Figure 17, gating signal fgate specifies effective image line.Based on gating signal fgate, generate color component specification signal Rs, Gs and Bs by data read control assembly 63.That is to say, only with effective image line corresponding statement cycle (asserted period) by gating signal fgate definition during, just state signal Rs, Gs and Bs successively with the order of being narrated.Other fixed cycle operator is identical with the fixed cycle operator of the ordering parts 60 of top Figure 10 that describes with reference to Figure 12 to 14.

Figure 16 shows diagram with reference to Figure 15 and 17 and the flow chart of the operating process of the ordering parts 60 described.

parts

62r, 62g and 62b with image data storage in each

line storage

61r, 61g and 61b.

When in step S102B when generating the data read control assembly 63 read signal subsequently and receive statement gating signal fgate, in step S102C and S103, walk abreast side by side, with from wherein three times of main scanning synchronizing signal lsync_s synchronised ground, read the view data that is stored in each color component among

line storage

61r, 61g and the 61b.Since then, in step S103, by data alternative pack 64 select among the step S102C, by view data, and with its output from the color component of the specification signal Rs, the Gs that read control assembly 63 or Bs appointment.The RGB color component is repeated this operation ("Yes" among the step S104), and subsequently, as long as receive statement gating signal fgate ("Yes" among the step S102B), just the view data of next input is carried out identical processing (step S101 to S104).

As a result, shown among Figure 17 any, with three times speed, in every row, each color component, parallel each color component images data of input simultaneously of output successively.

Figure 18 shows another configurations except Fig. 6,10 and 15, ordering parts 60.Figure 20 shows the sequential chart of the operation timing of these ordering parts 60 of diagram.

Except will effectively go signal fsync and effectively line number signal line_n be input to the data read control assembly 63, the ordering parts 60 of Figure 18 are identical with Figure 10 in configuration.

In Figure 20, the signal fsync that effectively goes specifies the beginning of effective image line, and effective line number signal line_n specifies the number of effective image line.Based on effective capable signal fsync and effective line number signal line_n, generate color component specification signal Rs, Gs and Bs by data read control assembly 63.That is to say, only during the statement cycle of the effective image line that begins corresponding to row from effective capable signal fsync appointment, just state signal Rs, Bs and Gs successively with the order of being narrated, described effective capable signal fsync is used for the number by the row of effective line number signal line_n appointment.Other fixed cycle operator is identical with the fixed cycle operator of the ordering parts 60 of top Figure 10 that describes with reference to Figure 12 to 14.

In the above description, mentioned R, G, the example of the order of B then, yet alternate manner is determined the order of line sequential signal arbitrarily.

Figure 19 shows the flow chart of diagram with reference to the operating process of Figure 18 and the 20 ordering parts of describing 60.

parts

62r, 62g and 62b with image data storage in each

line storage

61r, 61g and 61b.

When in step S102B when generating the data read control assembly 63 read signal subsequently and receive effective capable signal fsync, in step S102C and S103, walk abreast side by side, with from wherein three times of main scanning synchronizing signal lsync_s synchronised ground, read the view data that is stored in each color component among

line storage

61r, 61g and the 61b.Since then, in step S103, by data alternative pack 64 correspondingly select among the step S102C, by from the specification signal Rs, the Gs that read control assembly 63 or Bs view data, and with its output by the color component of predefined procedure appointment.The RGB color component is repeated this operation ("Yes" among the step S104), and subsequently, for the effective image line that begins from row by effective capable signal fsync appointment, view data to next input is carried out identical processing (step S101 to S104), and wherein said effective capable signal fsync is used for the number ("No" of step S102E) of the row of effective line number signal line_n appointment.

In addition, the invention is not restricted to the foregoing description, and, can be below not deviating under the situation of desired basic conception of the present invention, make and change and revise.

The application is herein incorporated its full content by reference based on the Japanese priority application 2005-162298 that submits on June 2nd, 2005 and on May 11st, 2006 respectively and 2006-132708 number.

Claims

1, a kind of image-reading device comprises:

Picture signal generates parts, and it is from a plurality of color components of the parallel reads image data of original paper, and parallel generation is used for the corresponding image signals of each color component;

The image processing parts, it in turn carries out predetermined image to each the picture signal that is used for a plurality of color components one by one and handles; And

Signal Processing Element, it for each color component and one by one in turn will output to the image processing parts by each color component that picture signal generates the picture signal that parts generate thus.

2, image-reading device as claimed in claim 1, wherein:

Described picture signal processing unit comprises analog signal processing component; And

Described image processing parts comprise the Digital Signal Processing parts.

3, image-reading device as claimed in claim 2, wherein:

Described picture signal generates parts and also comprises colored CCD, and it receives the light of described a plurality of color components simultaneously, and, the parallel signal of telecommunication that generates correspondence; And

Described analog signal processing component to a plurality of color components of the described signal of telecommunication parallelly sample simultaneously, offset adjusted and gain-adjusted.

4, image-reading device as claimed in claim 1, wherein:

Described image processing parts comprise: the Rendering Process parts, and its view data to each color component is carried out deep or light correction; γ correcting unit, its view data to each color component carry out γ and proofread and correct; And the filter process parts, its view data to each color component is carried out Filtering Processing.

5, image-reading device as claimed in claim 1, wherein:

Described Signal Processing Element is according to the given signal of specifying the output color component, and output is used for the capable view data of the monochromatic component of every row.

6, image-reading device as claimed in claim 1, wherein:

During the effective period by the given signal appointment of the effective period of designate, described Signal Processing Element is used for the capable view data of the monochromatic component of every row with predesigned order output.

7, image-reading device as claimed in claim 1, wherein:

Described Signal Processing Element is according to the signal of specifying the effectively beginning of row and specify the effectively signal of the number of row, is used for the capable view data of the monochromatic component of every row with predesigned order output.

8, image-reading device as claimed in claim 1 also comprises:

Image forming part, it forms image based on having carried out the view data of handling by the image processing parts on the booking situation medium; And

Communication component, it sends via communication line and has carried out the view data of handling by the image processing parts.

9, image-reading device as claimed in claim 1, wherein:

In described Signal Processing Element, generate the frequency of timing controling signal of timing of the picture signal of parts input from picture signal with respect to control, the frequency of timing controling signal of timing that control is outputed to the picture signal of image processing parts increases the prearranged multiple factor.