JPH05260268A - Image reading device - Google Patents

Abstract

PURPOSE:To prevent the useless operations of an image reading device even when no original is recognized despite the attachment of a carrier which holds the original, when the position of the original is shifted, or when the image is taken out in halfway of an image reading mode or its related operation mode. CONSTITUTION:An image reading device consists of an original attachment part 610 which attaches an original 11, an image reading means 112 which reads the image of the original 11 set at the part 610, a data arithmetic analysis processing means which applies the arithmetic analysis processing to the image data read by the means 112, an original attachment state deciding means which decides either or both of an original absent state and an improper original attachment state based on the data arithmetic analysis processing information given from the data arithmetic analysis processing means, and a control means which inhibits the image reading operation by an image reading means 13 when one of both preceding states is decided after an image reading operation is carried out as a preprocessing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading device,
The present invention relates to an image reading device in which a document such as a film is mounted in a predetermined state, the image of the document is read, the read data is stored as it is, or the data is output to a printer or the like to be used for copying and printing the read image. It is a thing.

[0002]

2. Description of the Related Art An image reading apparatus for reading a film image has been conventionally known which detects whether or not a film carrier is mounted and prohibits the image reading operation if the film carrier is not mounted.

With this device, it is possible to prevent the image reading operation and the printing operation using the read image data from being unnecessarily performed when the film carrier is not mounted.

[0004]

By the way, a film is often held and handled by a film carrier because of its convenience in handling.

For this reason, even if the film carrier is mounted in a predetermined state, the film carrier may not have the film, or the film carrier may be misaligned.

In such a case, since the read image data becomes defective even if the image is read, the operation and time for reading the image, storing the image, printing using the image data, and the like are wasted.

Waiting for one image reading operation to be completed during the image reading operation, even if the user notices a defect in the image reading, and this also wastes time.
It's inconvenient.

Irrespective of whether or not the original is held on a carrier with a film or the like and used, the image reading and the printing operation resulting therefrom are suddenly performed during the image reading operation or the printing operation using the read image data. A document may be suddenly pulled out of a predetermined mounting part because the user wants to cancel it.

In this case as well, the subsequent image reading operation and printing operation are wastefully performed, and there is a waste of time for waiting for the start of the next operation until a series of operations is completed, and to interrupt the operation. There is the inconvenience of having to perform an operation for interruption.

However, the above-mentioned conventional device cannot cope with these problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image reading apparatus capable of preventing unnecessary operation and inconvenience in the above case.

[0012]

In order to achieve the above-mentioned object, the present invention provides a document mounting portion for mounting a document, and an image reading means for reading an image of the document mounted on the document mounting portion. A data operation / analysis processing means for performing an operation analysis processing on the image data read by the image reading means, and an original for discriminating whether or not the original is present or the original is unsuitable based on the data operation / analysis processing information from the data operation / analysis processing means. The first feature is that the apparatus is provided with a mounting state determination means and a control means for reading an image as a pre-processing and for prohibiting the image reading operation by the image reading means when the determination is made.

The present invention also provides a document mounting section for mounting a document and an operating device for reading an image of a document mounted on the document mounting section and storing the read image data or forming an image by the read image data. Image reading control means for performing necessary control for working, document presence / absence detection means for detecting whether or not a document is loaded in the document loading portion,
A second feature is that an emergency stop control unit is provided for urgently stopping the operation of the image reading control unit when the document presence detection unit issues a detection signal indicating that there is no document during the operation of the image reading control unit. ..

[0014]

According to the structure of the first feature of the present invention, when the image reading means reads the image mounted on the document mounting portion, the arithmetic analysis processing means operates to be read by the image reading means. The image data is subjected to arithmetic analysis processing, and the document mounting state detecting means determines whether there is no document or whether the document is not properly mounted according to the processing result. Since the reading operation is prohibited, it is possible to prevent the useless reading operation of the original document irrespective of the use or non-use of the carrier when the original document is not present or when the original document is not properly attached.

According to the configuration of the second feature of the present invention, the image reading control means stores the image of the image of the document mounted on the document mounting portion and the image data corresponding to the image, or stores it. When the operating device to be used is working, if the document presence detection unit outputs a detection signal indicating that there is no document in the document loading section, the emergency stop control unit operates and the operation of the image reading control unit is stopped urgently. If the original is pulled out while reading the image of, storing the image data or operating a device that uses this,
It is possible to stop the operation which is originally performed based on the image or the operation of the device which uses the read image data, and automatically prevent the unnecessary operation thereafter.

[0016]

An embodiment of the present invention will be described in detail below with reference to the drawings.

The present embodiment shows a color image reading apparatus for reading an image on a color film. The image reading data is stored or variously processed and input to an external device such as a digital printer, and based on the above processing. It is used when various copy images are obtained.

FIG. 1 shows a schematic configuration of the apparatus of this embodiment as seen from the front. As shown in FIG. 1, a color CRT 2 for displaying the read image and performing various processing operations is provided on the upper part of the apparatus main body 1 for reading the image and processing the signal.

The film 11 to be used for reading an image is held on the film carrier 3 and loaded in the dolly 61 shown in FIG. 1 in the direction of arrow a. After loading, the dolly 61 is loaded in the arrow b.
By moving the film carrier 3 in the direction of, the predetermined frame of the film 11 can be aligned on the projection optical path for image reading.

FIG. 2 shows a schematic structure of the image reading apparatus when the apparatus body 1 is viewed from above. In the image reading apparatus of this embodiment, a film 11 for reading an image and a color CCD sensor 112 for reading the film image are fixed 1.
Dimensional line lighting system is adopted.

Therefore, in order to read the data in the sub-scanning direction, the illuminating section 113 and the first, second and third mirrors 12, 13 and 14 reciprocate.

In FIG. 2, the illumination unit 113 and the first, second, and
Each third mirror 12, 13, 14 is shown in solid line at the scan start position.

In the present embodiment, the image reading apparatus also illuminates films 11 of different sizes, projects the transmitted light onto a predetermined size portion of the color CCD sensor 112, and outputs the color C
In order to read an image by utilizing the resolution of the CD sensor 112, it is necessary to change the image forming magnification of the optical system on the color CCD sensor 112 depending on the film size.

Specifically, in the case of a 35 mm film, x
2.550, 6cm film x 0.947
In the case of a 4, 4 × 5 inch film, it is × 0.5734. However, this is a color CCD in the short side direction of the film 11.
This is the case where the main scanning direction of the sensor 112 is set.

The optical magnification is changed by changing the conjugate length. Although this is well known and will not be described in detail, it is performed by changing the positions of the second and third mirrors 13 and 14, the imaging lens 15, and the lens rearview mirrors 16 and 17.

Unlike the change of the optical magnification, the data scaling process is performed by making the scanning speed variable in the sub-scanning direction and electrically processing the data in the main scanning direction.

The relationship between the film 11 and the positions of various components will be described. The second and third mirrors 13 and 14 are driven together by a stepping motor for conjugating length correction.

The position at the start of scanning for each film size is
As shown in the figure, the solid line position is for 35 mm film, and the dashed line position is for 4 cm film, 4 x 5
In the case of inch film, the position is indicated by the chain double-dashed line.

As the positioning control of the image forming lens, 35
For the mm film and the 6 cm film, the same position as shown by the solid line in FIG. 2 may be used, and only for the 4 × 5 inch film, the position is shown by the dashed line.

The movement and position control of the image forming lens 15 are performed in the same manner as in the case of the mirror by utilizing a dedicated stepping motor (not shown).

The lens rearview mirrors 16 and 17 are 35 mm
For the film, the position shown by the solid line in FIG. 2 is set so as to cooperate with the lens back fixed mirror 18, and for the 6 cm film and the 4 × 5 inch film, the position shown by the dashed line is fixed. It is designed to work independently of the mirror 18.

For this reason, the lens back fixed mirror 18 used for reading the image of the 35 mm film is fixed at the position indicated by the solid line in FIG. 2, and these are fixed for the lens back mirrors 16 and 17 which have reached the solid line position for reading the 35 mm film. Although it is located in the optical path formed by the lens back mirrors 16, 17 which are located in the optical path formed by the lens back mirrors 16 and 17 which have reached the position indicated by the alternate long and short dash line of the 6 cm film and the 4 × 5 inch film, they are out of the optical path formed by these.

The position of these lens rear-view mirrors 16 and 17 is controlled by a dedicated stepping motor (not shown) in the same manner as the mirrors and the imaging lens.

In front of the color CCD sensor 112, there is provided a filter section 25 in which four kinds of filters 21, 22, 23 and 24 are set.

The filter section 25 is provided with a quantity of light to the color CCD sensor 112, R,
It has the function of matching the balance of G and B.

The filter 21 is a filter inserted during an actual operation of reading an image on a negative film, and is, for example, L.
B100 or the like is used.

The filter 22 is a filter inserted during an actual operation of reading an image on a positive film, and is, for example, N.
A D filter or the like is used.

The filter 23 is a filter inserted when the shading correction data of the negative film is taken in.

The filter 24 is a filter inserted when the shading correction data of the positive film is fetched.

The reason why the filter is divided between the actual operation and the time of capturing the shading correction data is that there is no film at the time of capturing the shading correction data.
This is because the amount of light and the balance are different because the film is present during actual operation, and this is corrected.

The filter switching operation of the filter section 25 is performed by a stepping motor (not shown) in the same manner as in the case of the mirror or the like.

As an auxiliary mechanism for this purpose, a sensor 26 for detecting the upper limit position and a sensor 27 for detecting the lower limit position of the moving range of the filter portion are provided.

When the filter section 25 is provided in front of the color CCD sensor 112, the filters 21, 22, 23 and 24 are set to the minimum size which is almost equal to that of the color CCD sensor 112, and a margin necessary for this is provided. The filter unit 25 can be small.

Scanning for reading the film in the sub-scanning direction is performed by driving the illumination unit 113 and the first, second, and third mirrors 12, 13, and 14 by a stepping motor for scanning (not shown).

The illumination section 113 is composed of a replaceable lamp unit 41, an optical path folding mirror 42, a heat insulating filter 43 shown in FIG. 3, and a kamaboko lens 44 having a light collecting surface and a diffusing surface on the front and back. The film 11 held by the film carrier 3 set between the illumination unit 113 and the moving parts of the first, second, and third mirrors 12, 13, and 14 is illuminated, and the image of the film 11 is illuminated. Is the imaging lens 1
5, the image is formed on the color CCD sensor 112.

The folding mirror 42 is a halogen lamp 45 which is set in the lamp unit 41 in a horizontal posture.
Is provided to guide the illumination light from the film to the film vertically arranged at a position higher than the lamp installation position.

The kamaboko-shaped lens 44 is provided to improve the light converging property, and the diffusing surface makes the attached dust and the like inconspicuous on the projected image.

The lamp unit 41 has a box shape as shown in FIG. 4, and a light projecting window 46 is provided on the upper surface. This projection window 46 opens when the lamp 45 is attached,
A shutter 47 that closes when the lamp 45 is not attached is provided.

As shown in FIGS. 4 and 5, the lamp unit 41 includes a reflection shade 48 for directing light from the lamp 45 to the light projecting window 46, a temperature fuse 49, and the lamp unit 41.
Short line 50 with the ground to determine the type of
It has a connector 51 that is electrically connected to the apparatus body 1 when mounted on the apparatus body 1.

The short line 50 is preset with a 2-bit code. The CPU 200 shown in FIG. 10 shows the connection state of the two short lines 50 by the parallel I / O port 2.
From 06, data is taken in and identified.

FIG. 6 shows the types of the lamp unit 41.
(A) equipped with a lamp 45a for a 35 mm film, equipped with a lamp 45b for a 6 cm film shown in the same figure (b), and a lamp for a 4 × 5 inch film shown in the same figure (c). There are three types, those with 45c attached, and they are replaced as needed.

These lamps 45a to 45c are the film 1
As the size of No. 1 becomes larger, the effective issuing unit 45d becomes longer, and the amount of light increases.

By the way, if the lamps 45 are commonly used, a huge number of W lamps 45 are required, and power is consumed more than necessary when projecting a small-sized film 11. This is a particular problem when using the film 11 that has a low tolerance to temperature.

By changing the kind of the lamp 45 according to the size of the film 11 as described above, such a problem can be solved. However, each lamp 45a-4
5c is properly selected according to the size of the film 11,
Must be used.

In order to guarantee this, the type of the lamp unit 41 mounted on the apparatus main body 1 is detected as described above.

The film carrier 3 is a film carrier 3a for a 4 × 5 inch film shown in FIG. 7A and a film carrier 3 for a 6 cm film shown in FIG. 7B.
b, a film carrier 3c for a 35 mm continuous film shown in FIG. 7C, and a film carrier 3d for a 35 mm mount film shown in FIG.

The film carrier 3b for 6 cm film has a projection window 3e of 6 × 9 mm.
cm film size is 6x4.5, 6x6, 6x7,
It is designed so that it can handle various types of 6 × 9.

Each of the film carriers 3a to 3d has a front surface 2
The holding plates are opened and closed with the upper hinge connection portion serving as a fulcrum so that the film 11 can be sandwiched and pulled out.

The film carriers 3a to 3d have the same outer dimensions, and the receiving conditions on the apparatus body 1 side are unified to simplify the structure on the apparatus body 1 side and the attachment / detachment operation thereof.

There is a distinction between the film carriers 3a to 3d in which the position and number of the holes 61 for type detection are different from those in which the holes 61 are not provided. Due to this difference, the film 11 held by each is different. The type is detected optically.

Further, each film carrier 3a to 3d includes
A set detection hole 62 for detecting an appropriate set position of the film carrier 3 is provided corresponding to each film projection window 3e, and the film 11 held by each film carrier 3a to 3d is on the projection optical path. The proper setting can be detected optically.

The dolly 61 which holds and moves the film carrier 3 has the film carriers 3a to 3d.
Photosensors 162, 1 for detecting the type of
63 and a transmissive photosensor 164 for detecting whether or not the film carriers 3a to 3d are mounted are incorporated in such a manner that the film carriers 3a to 3d mounted on the truck 61 are sandwiched therebetween.

Further, a transmission type photo sensor 165 for detecting the set state of the film carriers 3a to 3d mounted on the dolly 61 is provided at a position near the dolly 61 of the main body 1 of the apparatus. It is arranged so as to be sandwiched.

As shown in FIG. 9, the color CRT 2 includes a monitor display section 71 for displaying an image read from the film 11, setting a copy mode, and setting a trimming area,
It has an operation panel 72 for instructing a print operation and an internal panel 73.

The monitor display section 71 has the following display section and operation section.

Image display area 81: The read film image is displayed.

Message display section 82: displays necessary types of the lamp unit 41 and the type of the film carrier 3, displays a message such as a shading correction data loading display, a film carrier pull-out display, etc. Display type and output paper size.

Image adjustment button 83: A submenu is displayed by selecting this button 83 with a cursor when performing image adjustment, and image adjustment settings such as color balance can be made.

Trimming button 84: Sets the trimming mode.

Enlarged continuous shooting button 85: Sets the enlarged continuous shooting mode. By selecting this button, a submenu will be displayed and the output size can be set.

Reduced continuous shooting button 86: Sets the reduced continuous shooting mode.

Output confirmation button 87: Performs output confirmation for displaying the relationship between the image to be printed out and the paper.

Output size button 88: Specifies the paper size of the printer. By selecting this button, a submenu is displayed, and the paper size can be set.

Reset button 89: Initializes the set copy mode.

-Number display section 90: The number of prints is displayed.

Number-of-sheets setting unit 91: Sets the number of prints.

The operation panel 72 has the following operation members.

Trackball 93: The cursor on the monitor display unit 71 is moved to the position of the various processing buttons displayed, and the required processing is selected. The cursor movement instruction is a movement amount in the X direction by a pulse in the X direction according to the rotation direction and the rotation amount of the trackball 93, Y
The direction pulse is used to instruct the amount of movement in the Y direction.

Trackball input key 94: Inputs a processing instruction signal corresponding to the position of the cursor operated by the trackball 93 to the CPU 200.

Stop key 95: Instruct to interrupt copying or image input.

Image input key 96: Instructs to read a film image and display it on the color CRT 2.

Print key 97: Instruct to start copying.

Copy permission / prohibition display 98; lit,
Displays whether the copy is permitted or prohibited by turning off the light.

The internal panel 73 is provided with the following operation section and display section.

Destination code display unit 101: Shows the destination.

Total counter 102: Displays the total number of copies.

Serviceman key 103: Instructing the serviceman to set the operation mode.

User key 104: Instructs setting of user choice mode.

Trouble reset key 105: Cancels the display of the internal trouble state.

CPU reset key 106; CPU
200 is hard reset.

Initial key 107: Instruct initial setting.

As the image processing circuit, although not shown, the following signals are exchanged with the copier other than the communication line to transmit the image data.

Power-on signal: Indicates the power-on / off state of the printer unit.

Image data request signal: Indicates the transmission timing of the image signal.

Horizontal effective area signal: Indicates a printable area in the horizontal direction.

Vertical effective area signal: Indicates a printable area in the vertical direction.

Print wait signal: Indicates a state in which the image signal cannot be transmitted.

Selector switching signal: Instructs switching of the image signal in the image processing circuit.

FIG. 10 shows a block diagram of a circuit diagram around the CPU 200. CPU200 is program RO
The entire device is controlled based on the contents of the program stored in M201.

The following are connected to the periphery of the CPU 200 by a CPU address bus and a CPU data bus.

.. EEPROM 202; Stores parameters for adjusting variations in individual devices. It is electrically readable and writable.

RAM 203: Stores variables necessary for executing the program.

Timer 204: Creates a predetermined timer value from the clock signal according to the setting from the CPU 200.

Communication port 205: Exchanges information with external devices.

Parallel I / O port 206: Outputs a control signal for controlling the peripheral device and inputs a status signal of the peripheral device.

Input image memory 207; color CC
The image data read by the D sensor 112 is stored.

Table ROM: Stores necessary table information.

AGDC 210: The display of the color CRT 2 is controlled by controlling the contents of the VRAM 211.

The followings are connected around the AGDC 210 by an AGDC bus and an AGDC data bus.

VRAM 211: Stores data relating to display control of the color CRT 2.・ Kanji ROM2
12; Character data of kanji is generated from the kanji code.

Work RAM 213; VRAM 21
It is used as a work area when controlling the contents of 1.

The CPU address bus and the AGDC address bus, and the CPU data bus and the AGDC data bus are connected to each other via the AGDC 210.

FIG. 11 shows a signal input / output unit centering on the parallel I / O port 206. The scanner motor drive circuit 301, the filter drive circuit 302, the film carrier detection mechanism 303, the cooling fan 304, the lamp control circuit. 305, lamp unit 41, lens drive circuit 30
6, an operation panel 72, an internal panel 73, a trackball 93, an image processing circuit 307, and a mirror driving unit 308 are connected.

The scanner motor drive circuit 301 is a CPU
A circuit for moving the first, second, and third mirrors 12, 13, 14 and the illuminating unit 113 at a predetermined speed in accordance with an instruction from 200, and drives a scanner that makes them movable as a unit. To do.

As a safety measure, the maximum and minimum scan positions are detected to prevent a collision due to overscan at the time of abnormality.

The scanner is controlled by the following signals.
Since it is a known one, its explanation is omitted.

Motor drive signal: Instructs the motor feed speed.

Forward / reverse rotation signal: Instructs the rotation direction of the motor.

Maximum scan position detection signal: Indicates that the scanner is at the maximum scan position.

Minimum scan position detection signal: Indicates that the scanner is at the minimum scan position.

Scan home position detection signal: Indicates that the scanner is at the home position.

The filter drive circuit 302 drives the filter section 25 so that the four types of filters 21 to 24 are switched depending on the operation mode.

The filter section 25 is controlled by the following signals. A stepping motor is used for driving, and positioning is performed by managing the number of driving steps from the signal from the reference position detection sensor.

ON / OFF signal of the filter unit: The filter unit 25 is moved or stopped.

• Forward / reverse rotation signal of the filter unit: Designates the moving direction of the filter unit 25.

Filter unit left limit position signal: Indicates that the filter unit 25 is in the left limit position.

Filter unit right limit position signal: Indicates that the filter unit 25 is in the right limit position.

The film carrier detection mechanism 303 is for detecting the type of the film carriers 3a to 3d, detecting the presence / absence of the film carrier 3 and the set state at the specified position, and the following signals are used. ..

Carrier presence / absence detection signal; device body 1
Indicates that the film carrier 3 is mounted.

Carrier set detection signal: Indicates whether the film carrier 3 is set at a normal projection position.

Film type detection signals 1 and 2; Film 1 depending on the difference between the film carriers 3a to 3d set by the combination of the photo sensors 162 and 163.
The type of 1 is determined.

Table 1 shows the combination of the film type detection signals 1 and 2 and the type of the film 11 designated by the combination.

[0133]

[Table 1]

The lamp control circuit 305 controls the light amount and lighting of the lamp 45. The DC voltage applied from the lamp control circuit 305 to the lamp 45 is the lamp unit 4
1 is supplied.

The signals used for this control are as follows.

Output voltage setting signal: a signal for setting the voltage applied to the lamp 45, which is given as a 5-bit signal.

Lamp on / off signal; lamp 45
Controls turning on / off.

Abnormality detection signal: An abnormality such as lamp burnout or abnormal lighting is detected.

The lamp unit 41 needs to be selected and used according to the kind of the film 11. For this reason, the lamp unit type detection signals 1 and 2 have been already described.

Is used.

Here, the lamp unit type detection signals 1, 2
Table 2 shows the relationship between the combination of No. 1 and the type of lamp unit 41 and the presence / absence of attachment.

[0142]

[Table 2]

The cooling fans 304a and 304b are operated so that the temperature inside the apparatus and the optical system does not exceed a predetermined temperature, and are controlled by the following signals.

Cooling fans 1 and 2; cooling fan 30
The on / off of 4a and 304b is controlled.

The lens driving circuit 306 is used for the imaging lens 15
The position is switched depending on the size of the film 11 used. The lens position is controlled by the following signals. Driving uses a stepping motor, and positioning is based on management of the number of driving steps from the signal of the reference position detection sensor.

Drive signal: Controls drive and stop of the lens drive motor.

Forward / reverse rotation signal: Designates the driving direction of the lens driving motor.

Position detection signal: Indicates that the lens is at the reference position.

The mirror driving unit 308 changes the positions of the second and third mirrors 13 and 14 and the lens rearview mirrors 16 and 17 in order to change the image forming magnification of the optical system depending on the size of the film 11. ..

The positions of the second and third mirrors 13 and 14 and the positions of the lens back mirrors 16 and 17 are controlled by the following signals. Each drive uses a stepping motor, and positioning is performed by managing the number of drive steps from the signal of each reference position sensor.

First and second mirror drive signals for conjugation length correction: The second and third mirrors 13 and 14 are driven and stopped.

Position detection signal: Indicates that the second and third mirrors 13 and 14 are at the reference position.

Forward / reverse rotation signal: Instructs the operation direction of each of the second and third mirrors 13 and 14.

Lens rear-view mirror drive signal: The lens rear-view mirrors 16 and 17 are driven and stopped.

Position detection signal: Indicates that the lens rear-view mirrors 16 and 17 are at the reference position.

Normal rotation / reverse rotation signal: Instructing normal rotation / reverse rotation of the lens rearview mirrors 16 and 17 parts.

By the way, in the image reading apparatus for reading the film image as in the present embodiment, it is conventionally known to detect whether or not the film carrier 3 is mounted, and prohibit the image reading operation if it is not mounted. Has been done from.

However, even if the film carrier 3 is mounted in a predetermined state, the film 11 may not be contained in the film carrier 3, and even if the film 11 is contained, the film projection window 3e as shown in FIG. On the other hand, the frame 11a of the film 11 may be displaced, and the inter-frame portion 11b may come to the position of the projection window 3e.

In such a case, even if the image on the film 11 is read, the read image data becomes defective, so that the operation and time for reading the image and storing it, or displaying and printing using the image data are wasted. become.

Even if the user notices a defect in image reading during the image reading operation, waiting for the end of one image reading operation wastes time in this respect as well. It is inconvenient because the operation for interruption must be performed in order to interrupt.

Further, since the film carrier 3 wants to urgently stop the image reading, the display by the image reading, the copying operation, etc. during the image reading operation or the copying operation using the read image data, May be suddenly pulled out from the specified mounting part.

In this case as well, the subsequent image reading operation and copying operation are wastefully performed, and it is necessary to wait until the start of the next operation until a series of operations is completed, and the interruption is required to interrupt this. There is the inconvenience of having to perform the operation for.

However, these problems cannot be dealt with by the conventional processing described above.

Therefore, in order to prevent the useless operation in the above case, in this embodiment, the image data read by the image reading as the preprocessing is subjected to the arithmetic analysis process, and the data arithmetic analysis process is performed. From the information, it is determined that the film 11 is not attached even if the film carrier 3 is attached, and that the attachment is not suitable even if the film 11 is present. If such determination is made, image reading and The operation related to is prohibited.

Further, the presence or absence of the film carrier 3 is constantly detected, and when the absence of the film carrier 3 is detected, the image reading operation and the copying operation using the read image data are urgently stopped. ..

FIG. 13 is a block diagram of image data processing based on the flow of image data in the apparatus of this embodiment.

The image data processing will be described based on this. First, in order to correct the variation in the image reading characteristics between the chips of the color CCD sensor 112, shading correction is performed by the following steps.

(1) The reference film is read by the color CCD sensor 112 to obtain R, G, B analog reference data.

(2) The processing of the black level clamp 401 is performed in order to adjust the black level in each line of the R, G, B analog reference data obtained in (1) to zero.

(3) The data whose black level has been adjusted in (2) is amplified by the ANP 402.

(4) The data amplified in (3) is A /
Quantization is performed by the D converter 403 to obtain 8-bit data for each of R, G, and B.

(5) The reference film data quantized by the operations (1) to (4) is stored in the shading correction memory 404.

(6) Shading correction memory 40
The data stored in No. 4 is supplied as the reference voltage of the D / A converter 405.

Subsequently, when the film 11 is set and the image is read, the following steps are performed.

(7) The original film 11 is read by the color CCD sensor 112 to obtain R, G, B image data.

(8) The data whose black level has been adjusted in (7) is amplified by the ANP 402.

(9) The data amplified in (8) is A /
Quantization is performed by the D converter 403 to obtain 8-bit data for each of R, G, and B. At this time, the shading correction memory 40 is used as the reference voltage of the A / D converter 403.
4 is supplied with the reference data read from the color CC
The variation component between the chips of the D sensor 112 is corrected and removed.

(10) Color CCD sensor 12 of the type in which the R, G, B line sensors are arranged in parallel
Since the reading position of each line is different, B /
The read position is corrected by the G / R aligner 406.

When transmitting the read image data to the printer unit, the following steps are performed.

(11) In order to output the image data obtained in (10) as a proper color to the printer, a color LU
At T407, the color of the input data read by the color CCD sensor 112 and the color of the output data to the printer are corrected.

(12) The output control unit 408 performs trimming processing to control the output image data to the printer.

With the above steps, the image data read by the color CCD sensor 112 can be transmitted to the printer, and the film image can be printed out.

When the read image data is displayed on the color CRT 2, the following steps are performed.

(13) The image data obtained in (10) is stored in the respective R, G, B image memories 409.

(14) In order to output the image data obtained in (13) to the color CRT 2 as an appropriate color, the color LUT 410 corrects the input data read by the color CCD sensor 112 and the output data to the color CRT 2. To do.

(15) The plane MIX 411 synthesizes the contents of each image memory 409 with the contents of the character plane 414 for displaying character examples, arrows, and frame lines. The contents of the character plane 414 are input to the plane MIX 411 via the control circuit 415.

(16) The D / A converter 412 converts the image data combined in (15) into an analog signal.

(17) The video signal output circuit 413 changes the analog signal obtained in (16) into a video signal for displaying on the color CRT 2.

By the above steps, the image read by the color CCD sensor 112 can be displayed on the color CRT 2.

Next, R, G, stored in the VRAM 413
The CPU 200 and the data bus are connected so that the CPU 200 can directly access the image data of B.

FIG. 14 shows a main program for control by the CPU 200.

When the power is turned on and the program is started, system initialization such as resetting the work RAM of the CPU 200 and peripheral devices is performed. In particular, by setting the scan flag to 0, the prescan is always performed in the image reading process, and the image data is analyzed to determine the presence or absence of the film and the positional deviation (step # 1).

Next, an initial screen for setting the copy mode is displayed on the color CRT 2 (step # 2). Then, shading correction is performed to initialize the color CCD sensor 112 used for image reading (step #
3).

With the above processing, the preparation for reading the image is completed.

After that, it is determined whether the image is being read (step # 4) depending on whether the scan flag is 1 or not. If the scan flag is 1, that is, if the image is being read, the process proceeds to step # 5 to perform sub-scanning control or image reading. Control related to.

If the image is not being read in step # 4, the process proceeds to steps # 9a and # 9, and if there is an emergency stop signal, the emergency stop process is performed, and the cursor input process according to the screen display of the color CRT 2 is performed. This sets the copy mode and trimming range.

After any of these processes, the process proceeds to step # 6 to detect the state of the film carrier and perform the film carrier process for controlling each element.

Subsequently, in step # 7, the operation panel 72
A panel key input process for performing a process corresponding to the above key operation is executed. In step # 8, the result of the key operation on the operation panel 72, the copy mode setting on the color CRT2 screen, the copy progress status, etc. Is transmitted by communication processing with the printer as necessary.

By transferring the image read by the film scanner to the printer by the above processing, the film image can be printed out.

FIG. 15 shows the image reading control subroutine of step # 5 in FIG.

In image reading control, control is performed for each scan mode instructed by a key operation on the operation panel 72.

First, in step # 11, the scan mode is identified. If it is the prescan mode, the process proceeds to step # 12, and if it is the image display mode, step # 1.
Go to 6. In the image output mode, step # 20
Go to.

The case of the prescan mode will be described.

In the prescan mode, the entire film image is read, and prescan control for storing the film image read data in the image input memory is performed (step #
12) When the scan is completed (step # 13), a data analysis process for analyzing the stored film image data is performed (step # 14).

Further, the scan mode is changed to the image display mode (step # 15), the operation inhibition is released (step # 15a), and the process is terminated.

That is, the reading condition is changed according to the analysis result of the image data read by the pre-scanning, the image is displayed, and if the operation is prohibited before, this is canceled.

The case of the image display mode will be described.

In the image display mode, the entire film image is read based on the reading conditions determined by the data analysis result even during the prescan (step # 16), and the image is displayed on the color CRT 2 by the image display processing in step # 17. Display the image.

The scan for displaying the image in step # 16 is performed by the R read by the color CCD sensor 112,
Since the normalization of G and B data and the processing such as negative and positive inversion are performed and displayed on the color CRT 2,
The number of scans may be one.

When the scan is completed (step # 1
8) Then, the scan flag indicating the end of image reading is set to 0, and the process ends (step # 19).

The case of the image output mode will be described.

In the image output mode, the film image is read based on the "reading start position", "reading end position", "scan mode", and "scan count" in the copy mode set on the screen of the color CRT 2 (step # 20), the processing of scaling and moving the image in the main scanning direction is performed in the scaling and moving processing in step # 21. In the image output scan control of step # 20, a color CCD is used.
The R, G, B data read by the sensor 112 is transmitted to the printer unit, and the color signals Y (yellow), M (magenta), C (cyan) for reproducing the image read from the R, G, B on the printer side. ) And K (black) are converted, the number of scans is equal to the number of output sheets × 4. In addition, the size is further doubled during reduced continuous shooting.

When the scan is completed (step # 2
2) The scan flag indicating the end of image reading is set to 0, and the process ends.

By the above processing, control of film scanning and image processing is performed for each scan mode, and color CR
It becomes possible to display an image on T2 and output an image to the printer unit.

FIG. 16 shows a subroutine of the data analysis process of step # 14 in FIG.

Here, various analysis processes are performed on the data taken in the image memory.

First, in the subroutine of step # 51,
The MAX value and the MIN value are detected from the captured data for one screen.

In the subroutine of step # 52,
The presence or absence of film is detected from the read data.

Subsequently, in a subroutine of step # 53, correction processing for normalizing the read data is performed.

Finally, in the subroutine of step # 54, the positional deviation of the film 11 in the film carrier 3 is detected.

Here, the image data is data relating to the density of an image, and has a small value for a high density portion (black image portion or dark image portion).

In the case of a negative film, the high and low of the density are reversed, but in this case, the actual printer or color CRT is used.
The data changed to the density of the image displayed in 2 is used.

FIG. 17 shows the MAX value / MIN value detection processing subroutine of step # 51 in FIG.

This is a routine for detecting the maximum value and the minimum value from the image data taken in the image memory. First, the initial value is set in step # 61, and the MAX value is set to the minimum value of the data, and the MIN value is set. Enter the maximum value of the data in each.

Next, the process of fetching the data at the predetermined address is carried out (step # 62), and the read address is counted up (step # 63).
In this embodiment, the number of data samplings is 1/8 of all pixels.

First, the data is compared with the current MAX value (step # 64). If it is larger than the MAX value, the process proceeds to step # 65, where the MAX value is updated to the data value and the subsequent step # 64. If it is not larger than the MAX value, the process proceeds to step # 66 to compare the data with the MIN value.

If the data is smaller than the MIN value, the process proceeds to step # 67, the MIN value is updated to the data and the process proceeds to step # 68, and if not, the process directly proceeds to step # 68.

At step # 66, the data is compared with the MIN value, and if the data is smaller than the MIN value, the process proceeds to step # 67 to update the MIN value to the data value, and then proceeds to step # 68, where R If the data is not smaller than the MIN value of R, the process directly proceeds to step # 68.

At step # 68, it is judged from the address value whether sampling for one screen has been completed,
If not completed, the process returns to step # 62 to repeat the above process, and if completed, this routine is completed.

FIG. 18 is a flow chart showing the film detection subroutine of step # 52 in FIG.

First, in step # 71, the MAX value and MIN
The difference between the MAX value and the MIN value obtained in the value detection processing subroutine is checked to determine whether the difference is x or less.

If there is no data difference, it is considered that there is no image. Therefore, if the difference is less than or equal to x, the process proceeds to step # 72, and it is determined whether or not the MIN value is greater than or equal to a large value y which is considered to be without film. .

Therefore, if so, it is considered that there is no film 11, so the process proceeds to step # 73, and processing for prohibiting operation and displaying it is performed.

If the difference between the MAX value and the MIN value is larger than x, it is considered that there is an image, and if the MIN value is smaller than y, it is considered that the film 11 exists. The process is terminated without performing the process.

In this embodiment, the method of detecting the maximum value and the minimum value from the image read data is adopted to detect the presence or absence of the film, but the method of using the average value and various analysis methods may be applied. You can

FIG. 19 shows the film shift detection subroutine of step # 54 in FIG.

Here, the positional deviation of the film 11 in the film carrier 3 is detected. Specifically, if the positional deviation of the film 11 occurs, the image corresponding to the projection window 3e is read within one screen. Since the inter-frame portion 11b of the film 11 is located as shown in FIGS. 12 and 20, this is detected.

When a normal image is read at the Z ₀ position in FIG. 20, the image read data in the main scanning direction has a large density change with respect to the change in the address X, as shown by the broken line in FIG. In the case of a negative film, most of the density portion having a predetermined value A or less is present.

On the other hand, the inter-piece part 1 at the Z ₁ position
Since 1b does not show any image, the density of the image read data hardly changes with the change of the address X, and all the data exceeds the predetermined value A.

Therefore, in this routine, the positional deviation of the film is detected by utilizing the tendency of the image reading data.

First, in step # 101, processing settings are made.
The X and Y addresses corresponding to the main scanning direction and the sub scanning direction, the image read data, and the image presence flag are all set to 0.

Next, at step # 102, the read data at the X and Y addresses is loaded into DATA.

Then, in step # 103, the X address is counted up, and in the next step # 104, it is determined whether or not the DATA value is smaller than the predetermined value A.

If it is smaller than the predetermined value A, it means that some image of the pixel on the film 11 is shown in step # 105. Therefore, the image existence flag is set to 1 and the process proceeds to step # 106. If it is larger than the predetermined value A, the process directly proceeds to 106.

At step # 106, it is determined whether the search for one line of the X address is completed. If not completed, the process returns to step # 102 to repeat the above processing.

[0246] If it is completed, the process proceeds to step # 107, and it is determined whether the image presence flag is 1, that is, whether the image exists in the above-mentioned one line.

If the image presence flag is 1, step # 10
The process shifts to 8, the X address is reset to 0, and the Y address is counted up.

Then, in step # 109, it is judged whether or not the search for one image is completed. If not completed, the process returns to step # 102 to repeat the processing, and if completed, the process returns.

Further, in step # 107, the image presence flag is set to 1
If not, it is determined that the image does not exist in the line, that is, the inter-frame portion 11a of the film, and in step # 110, the warning display of the film position deviation and the operation prohibition are made.

FIG. 22 shows a flow chart of the film carrier processing subroutine in step # 6 of FIG.

Here, the film size and the negative / positive are discriminated by the size detection signals A and B and the negative / positive detection signals generated by the difference of the set film carriers 3.

First, in step # 111, it is determined whether or not the film carrier 3 is set based on a signal from the photo sensor 64. If there is no film carrier 3, it is determined in step # 112 whether the scan flag is 1. .

It is determined whether the scan flag is 1, that is, whether the scan operation is in progress. If the scan operation is in progress, the scan flag is set to 0 in step # 113, and the emergency stop flag is set to 1 in step # 114 so that the subsequent operations are stopped urgently.

If the film carrier 3 is mounted in step # 111, and if the scan flag is not 1 in step # 112, that is, the scanning operation is not in progress, the process proceeds to step # 121.

At step # 121, the presence or absence of the size A signal is discriminated. If there is the A signal, a 4 × 5 inch film is set, and the routine proceeds to step # 125.

If there is no A signal, the routine proceeds to step # 122, where it is judged whether or not there is a size signal B. If there is a B signal, a 6 cm film has been set, and the process proceeds to step # 125.

If there is no B signal, the routine proceeds to step # 123, where it is judged if the negative / positive detection signal is 1.

If the negative / positive detection signal is not 1, the positive film is set and the routine proceeds to step # 125.

35 mm if the negative / positive detection signal is 1.
Since the negative film is set, the routine proceeds to step # 124, the negative flag is set to 1, and this subroutine is finished.

In short, this negative flag is a flag that is set only when the 35 mm negative film is set, and as described above, it is determined whether or not the normalization correction process is performed, and the prescan for fetching the correction data is performed. It is used to judge whether or not.

Therefore, when a film other than the 35 mm negative film is set, the above step # 12 is performed.
In step 5, the negative flag is set to 0 so that the normalization correction process and the prescan are not performed.

FIG. 23 shows a flowchart of the emergency stop processing subroutine in step # 9a of FIG.

This is the processing to be performed when the emergency stop flag indicating the pulling out of the film carrier 3 during the scanning operation is set to 1 in the film carrier processing subroutine.

First, at step # 131, it is determined whether or not the emergency stop flag is 1. If not 1, this routine is ended.

If it is 1, the process proceeds to step # 132, and the scan end process is performed. This is for returning the scanner, which is stopped midway due to the interruption of the image reading control, to the original position.

Next, at step # 133, a stop command is sent from the scanner side to the printer side to notify that the copy operation has been interrupted. As a result, the printer side also performs processing such as interrupting the copy operation.

Finally, in step # 134, the emergency stop flag is reset to 0 and this routine is finished.

[0268]

According to the first aspect of the present invention, when the image reading means reads the image mounted on the document mounting portion, the arithmetic analysis processing means operates to read the image read by the image reading means. Data is processed and analyzed,
According to the processing result, the document mounting state detecting means determines whether there is no document or whether the document is not mounted properly. If there is this determination, the control means operates to prohibit the image reading operation by the image reading means. Irrespective of whether the document is used or not, it is possible to prevent unnecessary document reading operation when there is no document or when the document is not mounted properly even if the document is loaded. It is possible to eliminate the inconvenience of having to wait for image reading and copying operation related thereto.

Further, according to the second feature of the present invention, the image reading control means reads the image of the original mounted on the original mounting portion and stores the image data corresponding to it or uses it. When the device is working, when the document presence / absence detection unit outputs a detection signal indicating that there is no document in the document loading section, the emergency stop control unit operates and the operation of the image reading control unit is stopped urgently. If a document is pulled out while reading, storing image data or using a device that uses it, the original operation is performed based on the current image, or the operation of the device that uses the read image data. It is possible to automatically stop the unnecessary operation after that, and even if the original is pulled out while the image is being read, it wastes time due to this.
In addition, the inconvenience of having to wait for the next image reading and the copy operation related thereto can be eliminated without any special operation.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a color image reading apparatus as seen from the front, showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the apparatus main body as viewed from above.

FIG. 3 is a side view showing a schematic configuration of an illumination unit.

FIG. 4 is a perspective view of a lamp unit.

FIG. 5 is a conceptual diagram showing an internal configuration of a lamp unit.

FIG. 6 is a diagram showing types of lamps.

FIG. 7 is a front view of a film carrier.

FIG. 8 is a front view of the type detection unit of the film carrier.

FIG. 9 is a front view showing a color CRT, an operation panel, and an internal panel.

FIG. 10 is a block diagram of a CPU and its peripheral devices.

FIG. 11 is a block diagram of a parallel I / O and a circuit connected thereto.

FIG. 12 is a front view of the film carrier showing a state where the film is displaced in the film carrier.

FIG. 13 shows R, G, read by a color CCD sensor.
It is a block diagram showing the composition of the device of this example based on the processing flow of each B signal.

FIG. 14 is a flowchart of a main routine showing main control of the CPU.

FIG. 15 is a flowchart of an image reading control subroutine.

FIG. 16 is a flowchart of a data analysis processing subroutine.

FIG. 17 is a flowchart of a MAX value / MIN value detection processing subroutine.

FIG. 18 is a flowchart of a film detection processing subroutine.

FIG. 19 is a flowchart of a film shift detection processing subroutine.

FIG. 20 is a diagram showing an aspect of an image of one screen for reading a misaligned film.

FIG. 21 is a graph showing a difference in image reading data between a misaligned film and a misaligned film.

FIG. 22 is a flowchart of a film carrier processing subroutine.

FIG. 23 is a flowchart of an emergency stop processing subroutine.

[Explanation of symbols]

 1 Device Main Body 2 Color CRT 113 Illumination Unit 12-14, 16-18 Mirror 15 Imaging Lens 61 Detection Holes 62, 63 Photo Sensor 112 Color CCD Sensor 200 CPU

Claims (2)

[Claims] 1. A document mounting unit for mounting a document, an image reading unit for reading an image of the document mounted on the document mounting unit, and a data calculation analysis for calculating and analyzing the image data read by the image reading unit. A processing unit, a document mounting state determination unit that determines whether or not a document is present or is not suitable for mounting the document based on the data calculation analysis processing information from the data calculation analysis processing unit, and an image is read as preprocessing to determine the determination. An image reading apparatus comprising: a control unit that prohibits an image reading operation by the image reading unit when there is a problem. 2. A document mounting unit for mounting a document, and an image reading device for reading an image of a document mounted on the document mounting unit, and storing the read image data or operating an operating device for forming an image thereby. The image reading control means for performing necessary control, the document presence / absence detection means for detecting whether or not a document is loaded in the document loading portion, and the document presence / absence detection means for detecting a document absence during the operation of the image reading control means. And an emergency stop control means for urgently stopping the operation of the image read control means when issued.