JP3825549B2 - Image reading device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image reading apparatus that reads an image recorded on, for example, a film using a line sensor.
[0002]
[Prior art]
Usually, such an image reading apparatus can be controlled by a host computer connected to the apparatus main body. In other words, an operation for reading an image by a line sensor, an operation for recording image data obtained by the reading operation on a recording medium attached to the apparatus body, and the like can be controlled by a host computer. It is also possible to configure the image reading apparatus so that a reading operation or a recording operation can be controlled by a stand-alone mode in which an operation switch provided on the apparatus main body is operated independently of the host computer.
[0003]
[Problems to be solved by the invention]
In the control by the host computer (remote mode), various operations can be executed relatively easily by operating the mouse while looking at the screen of the monitor connected to the computer. On the other hand, in the stand-alone mode, it is necessary to control the setting items such as date and resolution by operating the operation switches while displaying various setting items on a display device such as a liquid crystal display. If it is configured to be performed by operating the operation member, the operation of the operation member becomes complicated and the usability deteriorates.
[0004]
An object of the present invention is to simplify the operation in the stand-alone mode.
[0005]
[Means for Solving the Problems]
The image reading apparatus according to the present invention is controllable by a computer provided outside the apparatus main body and a control circuit provided inside the apparatus main body, and is an image reading optically reading an image recorded on a document. A first operation executing means for executing an operation with a relatively high execution frequency, a second operation executing means for executing an operation with a relatively low execution frequency, and control by a computer are prohibited, In addition, in the stand-alone mode in which the control by the control circuit is permitted, the control unit is provided with a control unit capable of permitting the operation of the first operation executing unit and prohibiting the operation of the second operation executing unit. .
[0006]
The second operation executing means includes, for example, display means for displaying the date and time. This display means is preferably capable of changing the display of date and time.
[0007]
The second operation executing means may include formatting means for executing a formatting operation on a recording medium on which image data is recorded.
[0008]
Further, the image reading apparatus may include a backup battery for operating a clock provided inside the apparatus main body, and a voltage detection unit that detects the voltage of the backup battery. In this case, the control unit includes: Even in the stand-alone mode, when the voltage detected by the voltage detection means is lower than a predetermined value or when the backup battery is replaced, the second execution control means may be configured to be operable. preferable.
[0009]
When the image reading apparatus includes a backup battery and voltage detection means, the control means replaces the backup battery when the voltage detected by the voltage detection means is lower than a predetermined value in the remote mode in which control by the computer is permitted. When doing so, it may be configured to allow the operation of the second operation executing means.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an image reading apparatus according to the first embodiment of the present invention.
[0011]
A read original M used in the image reading apparatus is a transparent original (negative film or positive film), and a color image is recorded on the negative film. The read original M is intermittently transferred in the direction of arrow A by the original transfer mechanism 10. A light source 20 is disposed above the passage path of the document M to be read, and an imaging lens 31 and a line sensor 30 are disposed below. The light source 20 is turned on and off by a light source drive circuit 41, and the image detection operation by the line sensor 30 is controlled by a line sensor drive circuit 42. The document transport mechanism 10, the light source drive circuit 41, and the line sensor drive circuit 42 operate according to a command signal output from a system control circuit (control circuit) 40.
[0012]
Image data read from the line sensor 30 is amplified by an amplifier 43 and converted into a digital signal by an A / D converter 44. The digital image data is subjected to shading correction in the image processing circuit 45 and then temporarily stored in the memory 46. This image data is read from the memory 46 and subjected to predetermined arithmetic processing such as color correction and gamma correction. The image data subjected to these processes can be recorded on the recording medium R. The image data is converted into a signal in accordance with a predetermined format by the interface circuit 47 and can be output to a computer 50 provided outside the image reading apparatus via an output terminal 48. Each operation of the A / D converter 44, the image processing circuit 45, and the interface circuit 47 and the recording operation on the recording medium R are controlled by the system control circuit 40.
[0013]
The operation of the image reading apparatus can be executed in a remote mode controlled by the computer 50 and a stand-alone mode controlled by operating an operation switch 49 connected to the system control circuit 40. In the stand-alone mode, control by the computer 50 is prohibited. That is, in the stand-alone mode, the image reading apparatus does not accept a control command from an external device such as a personal computer, and without transferring image information to the personal computer or the like according to control by a control device provided in the apparatus body. Reading and recording of image information on a recording medium are performed. On the other hand, in the remote mode, a control device provided in the image reading device operates based on a command from a control circuit of an external device such as a personal computer, and an image reading operation is performed based on a control command from the external device. In addition, the read image information is transferred to the outside.
[0014]
The system control circuit 40 is connected to a display panel 52 and a real-time clock (clock) 53 in addition to the circuits described above. The display panel 52 is provided for displaying the date and time, and for displaying various states relating to the operation of the image reading apparatus (for example, the remote mode). The real-time clock 53 is provided for recording the date and time on the recording medium R and displaying them on the display panel 52. A backup battery 54 is connected to the real time clock 53.
[0015]
FIG. 2 shows the document transport mechanism 10, the light source 20, and the line sensor 30. The read original M is a film-like transparent original supported by a frame 11, and the frame 11 is fixed to a plate-like stage 12 by a stopper 13. The stage 12 has an opening (not shown) at a position corresponding to the document M to be read. A rack 14 is formed on the side end surface of the stage 12, and the rack 14 meshes with a pinion 16 provided on the output shaft of the document feed motor 15. The document feed motor 15 is driven based on the control of the system control circuit 40 to control the position of the document M to be read.
[0016]
The light source 20 is positioned above the stage 12 and is configured by periodically arranging light emitting elements 21R, 21G, and 21B that emit blue (B), green (G), and red (R) light in this order. However, this arrangement can be changed according to the purpose. 2 shows only six light emitting elements, more light emitting elements may be provided or fewer. The light emitting elements 21R, 21G, and 21B are supported by an elongated support member 22 that extends in the width direction of the stage 12, and a cylindrical lens 23 that extends in parallel with the support member 22 is disposed between the support member 22 and the stage 12. ing. That is, the light emitted from the light emitting element 21 is collected by the cylindrical lens 23 and irradiated onto the read original M in a line shape.
[0017]
The line sensor 30 is positioned below the light source 20 with the stage 12 interposed therebetween, and is provided in parallel with the support member 22 and the cylindrical lens 23. That is, the line sensor 30 extends in a direction substantially orthogonal to the direction in which the read original M is transferred. An imaging lens 31 is provided between the line sensor 30 and the stage 12. The imaging lens 31 extends in parallel with the line sensor 30 and is constituted by a rod lens array. Accordingly, when the light source 20 emits light to the read original M, an image recorded on the read original M is imaged on the light receiving surface of the line sensor 30 via the imaging lens 31.
[0018]
FIG. 3 shows the configuration of the light source 20 and the line sensor 30 when a reflective original is used as the original M to be read. In this configuration, the light source 20 and the cylindrical lens 27 are disposed below the read original M together with the line sensor 30 and the imaging lens 31. That is, the light emitted from the light source 20 is applied to the lower surface of the read original M through the cylindrical lens 27, and the light reflected by the original M is imaged on the line sensor 30 through the imaging lens 31. .
[0019]
FIG. 4 is a perspective view of the image reading apparatus viewed from the front side. On the front surface 62 of the apparatus main body 61, a document insertion slot 63 for inserting the read document M (FIG. 1) together with the stage 12 (FIG. 2) and a recording medium insertion for inserting the recording medium R (FIG. 1). A mouth 64 is formed. The document insertion slot 63 and the recording medium insertion slot 64 are parallel to the upper surface 65 of the apparatus main body 61. An eject button 66 that is pressed to eject the recording medium R from the apparatus main body 61 is provided on the side of the recording medium insertion port 64.
[0020]
A display panel 52 (FIG. 1) is provided on a slope 67 formed between the upper surface 65 and the front surface 62. On both sides of the display panel 52, a mode switch 49a, a recording switch 49b, an up switch 49c, and a down switch 49d are provided. These switches 49a, 49b, 49c, 49d correspond to the switch 49 shown in FIG. The operation of each switch 49a, 49b, 49c, 49d will be described later with reference to flowcharts (FIGS. 6, 7, 9-14).
[0021]
FIG. 5 is a perspective view of the image reading apparatus viewed from the back side. On the back surface 68 of the apparatus main body 61, a power switch 71 is provided above and a power cable 72 is provided below. In the vicinity of the power cable 72, an input / output terminal 48 (FIG. 1) is provided.
[0022]
As the recording medium R, any recording medium can be used as long as it can record image data. For example, an ATA (AT Attachment) flash memory card of a memory card (hereinafter referred to as a PC card) conforming to the PCMCIA standard can be used. A disk or a floppy disk may be used.
[0023]
6 and 7 are flowcharts of a main routine for controlling the operation of the image reading apparatus. This routine is executed by the system control circuit 40. FIG.
In step 101, it is determined whether or not the mode changeover switch 49a (FIG. 4) is pressed and set to the on state. When the mode changeover switch 49a is pushed, in step 102, the mode transition routine shown in FIGS. 9 and 10 is executed. The mode transition routine is provided to execute various operation modes of the image reading apparatus, and for example, the formatting operation of the recording medium R is executed.
[0024]
When it is determined in step 101 that the mode switch 49a has not been pressed, and after step 102 is executed, the routine proceeds to step 103. In step 103, it is determined whether or not the recording medium R is attached to the recording medium insertion slot 64 (FIG. 4). When the recording medium R is not loaded, the process proceeds to step 116, and when the recording medium R is loaded, the process proceeds to step 104.
[0025]
In step 104, it is determined whether or not the mounted recording medium R can be used, that is, whether or not the type of the recording medium R can record an image by the image reading apparatus. For example, when the image reading apparatus is configured to record image data on an ATA flash memory card of a PC card, if an IC card other than the ATA flash memory card is loaded, a recording medium is displayed in step 104. It is determined that R is not usable.
[0026]
When the recording medium R cannot be used, the format ready flag is reset to 0 in step 105, and the process proceeds to step 116. On the other hand, when the recording medium R is usable, it is determined in step 106 whether or not the recording medium R has been formatted. When the recording medium R is not formatted, the format enable flag is set to 1 in step 107 and the process proceeds to step 116. On the other hand, when the recording medium R has been formatted, the format ready flag is reset to 0 in step 108, and the process proceeds to step 111.
[0027]
In step 111, it is determined whether or not the free capacity of the recording medium R, that is, the recordable capacity is sufficient to record image data. When the free capacity of the recording medium R is sufficient, step 112 and the subsequent steps are executed, and when the free capacity of the recording medium R is not sufficient, the steps 116 and lower are executed.
[0028]
In step 112, the stand-alone permission flag is set to 1. In step 113, a message indicating that both the stand-alone mode and the remote mode are permitted is displayed on the display panel 52 (FIGS. 1 and 4). An example of this message is indicated by reference numeral E1 in FIG.
[0029]
Next, at step 114, it is determined whether or not the recording switch 49b (FIG. 4) has been pressed. When the recording switch 49b is not pressed, the process returns to step 101, and the above-described processing is executed again. On the other hand, when the recording switch 49b is pressed, step 115 is executed. That is, the image is read by the line sensor 30 and the image data is recorded on the recording medium R.
[0030]
As described above, when the type of the recording medium R is an image that can be recorded by the image reading apparatus, and the recording medium R is formatted and has a sufficient free space, the recording switch 49b is pressed to thereby record the image. A reading operation and a recording operation on the recording medium R are performed.
[0031]
When the reading operation and the recording operation in step 115 are completed, the process returns to step 111, and the free space after recording the image data is checked. If there is still enough free space, step 112 and the subsequent steps are executed, and if there is not enough free space, the process proceeds to step 116.
[0032]
As will be understood from the above description, step 116 is executed when the recording medium R is inappropriate for recording an image or is not ready to record an image. That is, in step 116, the stand-alone permission flag is reset to zero. In step 117, a message indicating that only the remote mode is permitted is displayed on the display panel 52. In other words, this message means that the recording operation in the stand-alone mode is impossible, and an example of this message is indicated by reference numeral E2 in FIG.
[0033]
In step 118, it is determined whether or not there is a request for image data transfer from the computer 50. When there is a transfer request for image data, step 119 is executed, and the image is read by the line sensor 30 and the image data is transferred to the computer 50. On the other hand, when there is no image data transfer request, step 119 is skipped.
[0034]
After execution of steps 118 and 119, the process returns to step 101, and the above-described processing is executed again.
[0035]
9 and 10 are flowcharts of the mode transition routine executed in step 102 of FIG.
[0036]
In step 201, it is determined whether or not the stand-alone permission flag is set to 1. As described above, the stand-alone enable flag is set to 1 when image data can be recorded on the recording medium R mounted on the image reading apparatus. At this time, the image reading apparatus can operate in both the stand-alone mode and the remote mode. is there. On the other hand, when the image data cannot be recorded on the recording medium R, the stand-alone permission flag is reset to 0, and the image reading apparatus can operate only in the remote mode.
[0037]
When the stand-alone permission flag is 0 (remote mode), step 202 is executed. In step 202, the date and time are displayed on the display panel 52. If it is confirmed in step 203 that the mode change switch 49a is released and set to the OFF state, step 204 is executed. That is, this routine starts when the mode changeover switch 49a is pressed, but does not proceed to step 204 while the switch 49a is kept pressed.
[0038]
In step 204, it is determined whether or not the mode switch 49a has been pressed again. When it is determined in step 204 that the mode change switch 49a has not been pressed, step 205 is executed. In step 205, it is determined whether the date or time has been changed by operating the up switch 49c or the down switch 49d. When not changed, steps 204 and 205 are repeatedly executed. When changed, the changed date and time are displayed at step 202. Steps 203 and 204 are executed in this order.
[0039]
When it is determined in step 204 that the mode switch 49a has been pressed, step 211 is executed to determine whether or not the format ready flag is set to 1. As described with reference to FIGS. 6 and 7, the format ready flag is set to 1 only when the recording medium R is usable and not formatted.
[0040]
When the format permission flag is 0, the process proceeds to step 217, and when the format permission flag is 1, the process proceeds to step 212. In step 212, the display panel 52 displays that the format mode has been established. If it is confirmed in step 213 that the mode switch 49a is set to the OFF state, step 214 is executed to determine whether or not the recording switch 49b has been pressed. When it is determined in step 214 that the recording switch 49b has been pressed, a formatting operation is executed in step 215. That is, in the formatting operation, formatting is performed by operating the recording switch 49b, and after the stand-alone permission flag is set to 1, the process proceeds to step 217.
[0041]
On the other hand, when it is determined in step 214 that the recording switch 49b is not pressed, the routine proceeds to step 216, where it is determined whether or not the mode switch 49a is pressed. Steps 214 and 216 are repeatedly executed while neither the mode switch 49a nor the recording switch 49b is pressed. During this time, if the mode switch 49a is pressed, the process proceeds from step 216 to step 217.
[0042]
In step 217, the fact that the standby mode has been set, that is, that the image reading operation can be executed is displayed on the display panel 52 (see FIG. 8). Here, when the stand-alone permission flag is set to 1, a screen indicated by reference numeral E1 is displayed, and when the stand-alone permission flag is not set to 1, a screen indicated by reference numeral E2 is displayed. Thereafter, when it is confirmed in step 218 that the mode changeover switch 49a is in an off state, that is, released, this routine ends.
[0043]
On the other hand, when it is determined in step 201 that the stand-alone permission flag is set to 1, step 221 is executed. In step 221, the display panel 52 displays that the erase mode has been set. Next, at step 222, when it is confirmed that the mode switch 49a is set to the OFF state, step 223 is executed, and it is determined whether or not the mode switch 49a has been pressed. When it is determined that the mode switch 49a has not been pressed, step 224 is executed. In step 224, an image to be erased is determined by operating the up switch 49c or the down switch 49d, and it is determined whether or not the image is erased by pressing the recording switch 49b. Thus, in the erasing operation, the image is erased by operating the recording switch 49b.
[0044]
When the erasing operation is not performed, steps 223 and 224 are repeatedly executed. When the erasing operation is performed, the number of the image erased in step 221 is displayed, and then the steps are executed in the order of steps 222 and 223.
[0045]
If the mode switch 49a is pressed while the erase mode is set, the process proceeds from step 223 to step 225, and the display panel 52 displays that the resolution setting mode is set. If it is confirmed in step 226 that the mode change switch 49a is set to the OFF state, step 227 is executed. In step 227, it is determined whether or not the mode switch 49a has been pressed again. If it is determined in step 227 that the mode switch 49a has not been pressed, step 228 is executed. That is, it is determined whether the resolution has been changed by the up switch 49c or the down switch 49d. When the resolution changing operation is not performed, steps 227 and 228 are repeatedly executed, and when the resolution changing operation is performed, a new resolution or the like is displayed at step 225. Steps 226 and 227 are executed in this order.
[0046]
If the mode switch 49a is pressed during this time, the process proceeds from step 227 to step 217, and the fact that the standby mode is set is displayed on the display panel 52 as described above. When it is confirmed in step 218 that the mode changeover switch 49a is off, that is, released, this routine ends.
[0047]
It should be noted that each item set for date and time or resolution is stored in a memory (not shown) provided in the system control circuit 40, and in the remote mode, an operation member provided in the apparatus main body 61. Can be set by a command from the computer 50 without operating. Further, in the remote mode, unlike the stand-alone mode, the setting operation of items with a low change frequency such as date and time is not omitted.
[0048]
As described above, in the present embodiment, in the stand-alone mode, the display of date and time and the changing operation thereof are prohibited, and the formatting operation of the recording medium R is prohibited. In other words, the date and time can be displayed and changed and formatted only in the remote mode. That is, in this embodiment, in the stand-alone mode, execution of operations with a relatively high execution frequency is permitted, and execution of operations with a relatively low execution frequency such as date and time display and setting are prohibited. ing. Therefore, according to the present embodiment, in the stand-alone mode, the operation is simplified as much as operations such as date and time display and setting are omitted.
[0049]
11 and 12 are flowcharts of a mode transition routine in the second embodiment. In the second embodiment, the electrical and mechanical configurations are the same as those of the first embodiment shown in FIGS. In the second embodiment, the main routine for controlling the operation of the image reading apparatus is the same as that in the first embodiment shown in FIGS. 6 and 7, and the display in the standby mode is the same as that in FIG. 11 and 12 are indicated by adding “100” to the numerals of the corresponding steps in the flowcharts of FIGS. 9 and 10.
[0050]
The contents of steps 301 to 305 are the same as those of steps 201 to 205 in FIG. When it is determined in step 304 that the mode switch 49a has been pressed, step 306 is executed to determine whether or not the stand-alone permission flag is set to 1. When the stand-alone permission flag is 1, the process proceeds from step 306 to step 321. When the stand-alone permission flag is 0, that is, in the remote mode, step 311 is executed. The contents of steps 311 to 318 are the same as steps 211 to 218 of FIG.
[0051]
On the other hand, when it is determined in step 301 that the stand-alone enable flag is set to 1, the process proceeds to step 307 where the voltage of the backup battery 53 (see FIG. 1) is detected and this voltage is lower than a predetermined value. Whether the backup battery 53 is dead or not is determined. When the voltage of the backup battery 53 is equal to or higher than the predetermined value, the process proceeds to step 321. On the other hand, when the voltage of the backup battery 53 is lower than the predetermined value, step 302 is executed, and the date and time are displayed on the display panel 52 (see FIG. 1). Steps 303, 304, and 305 are executed.
[0052]
If step 302 is executed after step 307 is executed, the process proceeds from step 304 to step 306, where it is determined that the stand-alone permission flag is 1. Accordingly, in this case, the process proceeds from step 306 to step 321. Also, if it is determined in step 307 that the voltage of the backup battery 53 is equal to or higher than a predetermined value, step 321 is executed. That is, in the stand-alone mode, date and time are not displayed, and the deletion mode (steps 321 to 324) and the resolution setting (steps 325 to 328) can be executed.
[0053]
The contents of Steps 321 to 328 are the same as Steps 221 to 228 of FIG. 9. If it is determined in Step 327 that the mode changeover switch 49a (see FIG. 4) has been pressed, the process proceeds from Step 327 to Step 317, where It is displayed on the display panel 52 that the mode is set, that is, that the image reading operation can be executed. Then, when it is confirmed in step 318 that the mode switch 49a is set to the OFF state, this routine is finished.
[0054]
As described above, according to the present embodiment, when the stand-alone enable flag is 1, that is, when both the stand-alone mode and the remote mode can be executed, if the voltage of the backup battery 53 is lower than a predetermined value, the date and time are set. Operations such as display are permitted. Therefore, according to the present embodiment, even in the stand-alone mode, when the backup battery 53 runs out and the date and time are out of date, the image reading apparatus can be used by correcting the date or the like. Further, according to the present embodiment, since the date and time display and the recording medium formatting operation are normally prohibited in the stand-alone mode, the operation in the stand-alone mode is simplified as in the first embodiment.
[0055]
13 and 14 are flowcharts of a mode transition routine in the third embodiment. In the third embodiment, the electrical and mechanical configurations are the same as those of the first embodiment shown in FIGS. In the third embodiment, the main routine for controlling the operation of the image reading apparatus is the same as that of the first embodiment shown in FIGS. 6 and 7, and the display of the standby mode is the same as that of FIG. Note that the reference numerals of the steps in FIGS. 13 and 14 are shown by adding “200” to the numerals of the corresponding steps in the flowcharts of FIGS. 9 and 10.
[0056]
In step 401, it is determined whether or not the stand-alone permission flag is set to 1. When the stand-alone permission flag is 0, step 408 is executed to determine whether or not the voltage of the backup battery 53 (see FIG. 1) is lower than a predetermined value. When this voltage is lower than the predetermined value, the routine proceeds to step 402. The contents of Steps 402 to 405 and 411 to 418 are the same as Steps 202 to 205 of FIG. 9 and Steps 211 to 218 of FIG.
[0057]
When it is determined in step 408 that the voltage of the backup battery 53 is equal to or higher than the predetermined value, the process proceeds from step 408 to step 411. That is, in the remote mode, when the voltage of the backup battery 53 is equal to or higher than a predetermined value, the date and time are not displayed and changed.
[0058]
On the other hand, when it is determined in step 401 that the stand-alone permission flag is set to 1, the process proceeds to step 421. That is, in the stand-alone mode, date and time are not displayed, and the deletion mode (steps 421 to 424) and the resolution setting (steps 425 to 428) can be executed.
[0059]
The contents of Steps 421 to 428 are the same as Steps 221 to 228 of FIG. That is, if it is determined in step 427 that the mode switch 49a (see FIG. 4) has been pressed, the process proceeds from step 427 to step 417, and it is confirmed in step 418 that the mode switch 49a has been set to the OFF state. Then, this routine ends.
[0060]
As described above, this embodiment displays the date and time only when the stand-alone enable flag is 0, that is, when only the remote mode can be executed, and when the voltage of the backup battery 53 is lower than a predetermined value. Adjustment is possible. Therefore, according to this embodiment, in the normal use state, the types of operations in the remote mode are reduced, and the operations are simplified. In addition, according to the present embodiment, the operation in the stand-alone mode is simplified as in the first and second embodiments.
[0061]
In the third embodiment, for example, when the power is turned on while the mode changeover switch 49a is pressed, the date and time can be adjusted, which facilitates adjustment work at the time of factory shipment or the like. Become.
[0062]
FIGS. 15, 16 and 17 are flowcharts of the mode transition routine in the fourth embodiment. In the fourth embodiment, the electrical and mechanical configurations are the same as those of the first embodiment shown in FIGS. In the fourth embodiment, the main routine for controlling the operation of the image reading apparatus is the same as that in the first embodiment shown in FIGS. 6 and 7, and the display in the standby mode is the same as that in FIG. 15, 16, and 17 are indicated by adding “300” to the numerals of the corresponding steps in the flowcharts of FIGS. 9 and 10.
[0063]
In step 501, it is determined whether or not the stand-alone permission flag is set to 1. When the stand-alone flag is 1, step 531 is executed, and the voltage of the backup battery 53 (see FIG. 1) is checked. In step 532, it is determined whether or not the voltage of the backup battery 53 is 0V. When the battery voltage is 0V, it is considered that the backup battery 53 has been removed, and the battery flag is set to 1 in step 533. In step 534, battery flag = 1 is written in the EEPROM provided in the real-time clock 53, and this routine ends.
[0064]
When this mode transition routine is executed again after the battery flag is set to 1 because the backup battery 53 has been removed, if a new backup battery is installed, it is determined in step 532 that the battery voltage is not 0V. Is done. Accordingly, step 535 is executed to determine whether or not the battery flag is 1. In this case, since the battery flag is 1, the process proceeds to step 502 and the date and time are displayed on the display panel 52. The contents of steps 502 to 505 are the same as those of steps 202 to 205 in FIG.
[0065]
When it is determined in step 504 that the mode switch 49a has been pressed, the battery flag is reset to 0 in step 541, and then battery flag = 0 is written to the EEPROM in step 542. Step 521 and subsequent steps are then executed. The contents of steps 521 to 528 are the same as those of steps 221 to 228 in FIG.
[0066]
When it is determined in step 527 that the mode switch 49a has been pressed, step 506 is executed to determine whether or not the stand-alone permission flag is set to 1. When the stand-alone permission flag is 1, the process proceeds from step 506 to step 521. When the stand-alone permission flag is 0, that is, in the remote mode, step 511 is executed. The contents of Steps 511 to 518 are the same as Steps 511 to 518 of FIG.
[0067]
On the other hand, when it is determined in step 535 that the battery flag is 0, that is, after the battery is replaced with a new backup battery and step 541 is executed, steps 502 to 505, 541 and 542 are not executed and step 521 is executed. Proceed to
[0068]
Therefore, according to this embodiment, when the backup battery is replaced, the date and time can be adjusted only once. In addition, according to the present embodiment, the operation in the stand-alone mode is simplified as in the first to third embodiments.
[0069]
In the third embodiment (FIGS. 13 and 14), step 408 may be omitted, and steps 531 to 535 may be provided between steps 401 and 421. That is, step 531 may be executed when the stand-alone permission flag is 1, and the process may proceed to step 402 when it is determined at step 535 that the battery flag is 1. As a result, the date and time can be adjusted only once when the backup battery is replaced in the remote mode.
[0070]
【The invention's effect】
As described above, according to the present invention, the operation in the stand-alone mode can be simplified.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating an image reading apparatus according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a document transport mechanism, a light source, and a line sensor.
FIG. 3 is a diagram illustrating an arrangement of a light source, a line sensor, and the like when a reflective original is used as a read original.
FIG. 4 is a perspective view of the image reading apparatus viewed from the front side.
FIG. 5 is a perspective view of the image reading apparatus viewed from the back side.
FIG. 6 is a flowchart showing the first half of a main routine for controlling the operation of the image reading apparatus.
FIG. 7 is a flowchart showing the latter half of the main routine for controlling the operation of the image reading apparatus.
FIG. 8 is a diagram illustrating an example of a message displayed on the display panel and indicating that both a stand-alone mode and a remote mode are permitted.
FIG. 9 is a flowchart showing the first half of a mode transition routine in the first embodiment.
FIG. 10 is a flowchart showing the latter half of the mode transition routine in the first embodiment.
FIG. 11 is a flowchart showing the first half of a mode transition routine in the second embodiment.
FIG. 12 is a flowchart showing the latter half of the mode transition routine in the second embodiment.
FIG. 13 is a flowchart showing the first half of a mode transition routine in the third embodiment.
FIG. 14 is a flowchart showing the latter half of the mode transition routine in the third embodiment.
FIG. 15 is a flowchart showing the first half of a mode transition routine in the fourth embodiment.
FIG. 16 is a flowchart showing portions of an erasing mode and a resolution setting operation in a mode transition routine in the fourth embodiment.
FIG. 17 is a flowchart showing a second half part of a mode transition routine in the fourth embodiment.
[Explanation of symbols]
30 line sensor
40 System control circuit (control circuit)
50 computers
52 Display panel
61 Device body
M manuscript

Claims (6)

An image reading apparatus that can be controlled by a computer provided outside the apparatus main body and a control circuit provided inside the apparatus main body, and that optically reads an image recorded on a document,
First operation executing means for executing an operation having a relatively high execution frequency;
Second operation execution means for executing an operation with a relatively low execution frequency;
In the stand-alone mode in which the control by the computer is prohibited and the control by the control circuit is permitted, the operation of the first operation execution unit can be permitted and the operation of the second operation execution unit can be prohibited. An image reading apparatus comprising a control unit. The image reading apparatus according to claim 1, wherein the second operation execution unit includes a display unit that displays a date and time. The image reading apparatus according to claim 2, wherein the display unit can change a date and time display. The image reading apparatus according to claim 1, wherein the second operation executing unit includes a formatting unit that executes a formatting operation on a recording medium on which image data is recorded. A backup battery for operating a timepiece provided in the apparatus main body; and a voltage detection means for detecting a voltage of the backup battery. The control means is configured to detect the voltage even in the stand-alone mode. 2. The image reading apparatus according to claim 1, wherein when the voltage detected by the means is lower than a predetermined value or when the backup battery is replaced, the operation of the second operation executing means is enabled. . A backup battery for operating a clock provided in the apparatus main body, and a voltage detection means for detecting the voltage of the backup battery, wherein the control means is in a remote mode in which control by the computer is permitted. The operation of the second operation execution unit is permitted when the voltage detected by the voltage detection unit is lower than a predetermined value or when the backup battery is replaced. Image reading device.

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