JPS61131958A - Picture reader - Google Patents

Abstract

PURPOSE:To attain picture reading with high accuracy by an inexpensive reader by detecting moving amount of an auxiliary member and using a read means so as to read information of an original in synchronizing with the detection signal. CONSTITUTION:The auxiliary member (carrier) 30 is set along a guide on a lower frame 1b and an upper frame 1a is closed, then the original is irradiated by a light source 26 by sliding manually the carrier 30 and its reflected light reaches a linear image sensor (LIS)20 and the information of the original is read. After the image of scattered light from the original is formed by a rod lens 23, the light is converted into an electric signal by the LIS20. The information converted into the electric signal is stored in the main body by the control circuit in synchronizing with the movement of the carrier 30. The movement of the carrier 30 is detected by using reflection light sensors 22a, 22b to detect the optical mark 32 recorded on the back side of the carrier 30. The sensor 22b outputs a synchronizing signal in response to stripes of the mark 32.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a manual image reading device.

BACKGROUND OF THE INVENTION In recent years, with the personalization of so-called OA (office automation) equipment, there has been a strong demand for simpler equipment and lower costs. For example, conventional high-precision image reading devices are large and expensive.

As a simple image reading device, for example, Japanese Patent Application Laid-Open No. 57-72
The method disclosed in Japanese Patent No. 468 has a problem of low accuracy.

Purpose of the Invention The present invention was made in order to solve the above-mentioned problems, and an object thereof is to provide an image reading device that has a simple configuration and is capable of manually reading images with high precision. That is.

Structure of the Invention The image reading device of the present invention includes an auxiliary member that holds and moves a document, a detection means that detects the amount of movement of this auxiliary member and outputs a signal every time the auxiliary member moves, and an image reading device that is held by the auxiliary member. The apparatus is characterized in that it comprises a reading means for reading information on the original, and the information on the original is read by the reading means in synchronization with a signal from the detection means.

Embodiment <Reading device main body> As shown in FIGS. 1 and 2, the image reading device main body 1 has an upper frame l having a rectangular planar shape with dimensions that allow manual manipulation.
a and a lower frame 1b, both frames la
, lb are connected to the Tsumugi IC at one end so as to be rotatable, and can be opened and closed as shown in FIG.

The upper surface IY of the lower frame 1b, which is opposite to the lower surface IX of the upper frame 1a, is lower than the surface IZ on the free end side, and when both the upper and lower frames la and 1b are overlapped and closed as shown in FIG. A gap g is provided between the rear surfaces 1x and IY through which the original to be read can pass.

In the center of the surface IY of this lower frame 1b, there is a surino) 1d.
is formed, and below the slot 7) a CCD array for image reading is arranged in parallel as will be described later.

On the other hand, various operation keys 2 and 3 are provided on the upper surface of the upper frame 1a.
．． 4.5, 7, 8, 9.10 are provided. Further, a display section 6 for displaying various data is provided.

Note that an engaging claw 1e is protruded from the free end side of the upper frame 1a, and when the upper frame 1a is closed, this engaging claw 1e
is adapted to engage with the engagement recess 1h of the lower frame 1b.

On the other hand, the original O has an auxiliary member (
This carrier 30 is sandwiched between 30 (hereinafter referred to as carrier)
is passed through the gap g in a direction perpendicular to the longitudinal direction of the frame as shown by arrow A.

The carrier 30 is composed of a transparent relatively hard plate-shaped base 31a and a flexible and transparent cover 31b that can be opened and closed with respect to the base 31a, and has a handle at one end for pulling the carrier 30. 33 is attached, and code marks 32 shown in FIG. 5 in the form of equally spaced black and white stripes are formed on both ends of the base 31a.6 FIG. 6 shows a cross-sectional view of the image reading device 1. , In the lower frame 1b, a bar-shaped rod lens 23 is provided directly below the pickpocket 7) ld, and a linear image sensor (hereinafter referred to as LIS) is installed directly below the lens in the same direction as the longitudinal direction of the pickpocket 7) ld. )20 is fixed. On the other hand, a long linear light source 21 in the same direction as the above-mentioned slip 7)
) The light emitted from the light source 21 passes through an oblique optical path 27, reaches the slot 7) ld, and illuminates the original.

The reflected light from the original passes through the rod lens 22 and passes through the LIS 20.
reach.

Note that 25 is a battery that drives the light source 21 and the control device.

On the other hand, in the upper frame 1a, a light emitter 22a and a light receiver 221) are provided in a passage 28 formed in a ■ shape at a position facing the code mark 32, and this light emitter 22a and a light receiver 221) Reading the mark 6 In the above device, set the carrier 30 along the side part (not shown) on the lower frame 1b, close the upper frame 1a, and then manually slide the carrier 30 in the direction A. The original is illuminated by the light source 26, and the reflected light reaches the LIS 20 to read information on the original. After the scattered light from the original is imaged by the rod lens 23, the L I
It is converted into an electrical signal by S20. The information converted into electrical signals is stored in a memory within the main body in synchronization with the movement of the carrier 30 by a control circuit to be described later. Detection of movement of the carrier 30 is performed by detecting an optical mark 32 recorded on the back surface of the carrier using a reflective optical sensor 22a on the main body,
This is done by detecting at 22b.

The light receiver 22b outputs pulses according to the direction of the code mark 32. Hereinafter, this pulse will be referred to as a synchronization signal 5YNC61.

Display device> In addition to the reading function, the main body 1 includes a display device 6 for using the read information, and a communication device for transmitting data between a printer and other devices for performing bar-V/fubee. has.

The display device 6 is a liquid crystal display device (hereinafter referred to as LCD) 24
It consists of a display section 6 using a computer and key human power sections 2 to 10 for operating the displayed information. Only part of the stored information is displayed on the LCD 24. The display functions as a window for viewing part of the total information. Keys 4 and 5 are input keys for moving the windler in the same direction as the carrier 30. Key 3 and key 4 are on carrier 3
The movement direction of 0 is a vertical direction. Further, keys 7 and 8 are input keys for enlarging or reducing the field of view of the window.

As shown in FIG. 7, the LCD 24 of the display unit 6 is
It is a dot matrix display of H and aLENGTH. On the other hand, the area PLANE40 in which the read data is stored in the memory has a width of
This area corresponds to the display of AX and vertical YMAX, and a part of it is displayed on the LCD 24. The display data is PLAN, which corresponds to the upper left corner of the LCD 24.
Point P2. on E40 determined by address P, (DAX, DAY) and display magnification MAG. The area is surrounded by P,,P,.

Communication device> The communication device uses optical communication using 7 Otodiodes and 7 Ototransistors built into the main body.

The main body 1 is separated into two units: an upper frame 1a and a lower frame 1b.

As shown in FIG. 9, the coupling section 1c of 1b is divided into a transmitting section 50 which has a built-in 7-channel diode 52 for transmitting, and a receiving section 51 which has a built-in 7-channel diode 53 for receiving. A protrusion 58 on the upper frame 1a side is removably fitted into the gap between the transmitting section 50 and the receiving section 51, so that the transmitting section 50 and the receiving section 51 are optically isolated. FIG. 10 is a sectional view of the transmitter. The transmitter and the receiver have the same basic structure, consisting of light emitting and light receiving elements and lenses.

The end faces 54 of the transmitting unit 50 and the receiving unit 51 are transparent covers, and in the case of the receiving unit 51, light emitted from the other party's device enters from the end face 54, and is formed by the inner wall of the coupling part. The light is focused on the 7-hole transistor 53 by the light focusing section 55 . The configuration of the transmitter 50 is the opposite.

This communication device allows data transmission with other devices having similar functions. For example, read data can be sent to a printer to make a hard copy, or conversely, data can be received from another storage device and stored in the L
It is also possible to display it on a CD.

<Control Unit> FIG. 11 shows a block diagram of the control unit of this device.

The control section is provided at an appropriate location within the main body 1 and is mainly composed of an MPU (one-chip microcomputer) 60 having a built-in program ROM and data RAM 110. Ilo of the MPU 60 includes keys 2 to 5, 7 to 10 for operating the main body, and a light receiver 2 for generating synchronization signals.
2b is connected. In addition to the above, a memory 62 for storing data read from the MPU 60 through a common bus 66, a display LCD controller section 63 for driving the display section 6, and a CCD controller 2 section 64 for reading document data from the LIS 20. , and a serial communication control unit 65 for communication.

The control section shown in FIG. 11 is, for example, a low power consumption C-
It is composed of a MOS IC and is powered by a battery 25 built into the main body.

Of the control unit, the MPU 60 and the memory 62 are connected to the battery.
Even if the MPU 60 stops functioning due to power off, the registers and data RAM in the MPU are backed up.
and the contents of memory 62 are retained.

Reading Method> Next, the basic operation of the reading timing of this device will be explained.

FIG. 12 shows the relationship between the synchronization signal 5YNC and the reading timing. The scanning speed of the carrier 30 is determined as an average speed ■ from the pulse interval TI of the synchronizing signal 5YNC, the length of which is predetermined as LSYNC.

5YNC V=-I On the other hand, the reading period Ts is determined from the average speed V of the carrier 30 and the preset reading resolution LSAMPLE as LSAMPLE Ts=υ.

Actual reading is performed using COD. Since the CCD is well known, we will not go into details about it, but a timing chart is shown in FIG.

TINT in FIG. 13 is the accumulation time per one time.

The output signal VOUT of the COD is determined by the amount of exposure, and the amount of exposure is determined by the amount of incident light and the accumulation time. This device uses an LED as a light source, and the amount of emitted light is proportional to the current. Therefore, in order to read at high speed, the accumulation time must be shortened, but in order to keep the CCD output constant, @1
As shown in Figure 4, the amount of light emitted must be increased,
The lifespan of the built-in power supply will be shortened.Therefore, in addition to the built-in power supply 25, this device is equipped with an external power supply connection terminal to reduce the light source current when operating with the built-in power supply, and to reduce the current only when using an external power supply. increased.

In reality, as shown in FIG. 15, the reading period Ts changes depending on the scanning speed, so in this embodiment, the light source is switched by a time TOH shorter than Ts. Assuming that there is no influence from external light, etc., the exposure amount will remain the same even if Ts changes.

In addition, in this device, the scanning speed is fast (the reading period Ts
However, when the distance becomes shorter than a predetermined value, the resolution is lowered and the same data is used twice, thereby keeping the ratio of the scanning distance to the number of read data constant.

FIG. 16 shows the above two ideas.

First, if the scanning speed is sufficiently slow, the reading period Ts and the adopted data are equal, as in 1).

The scanning speed of the carrier 30 becomes faster and Ts becomes the predetermined value Ts.
o (reading cycle when light source duty is less than 50%)
When it approaches half of , the duty of the light source approaches 100%. ? ! - If the scanning speed becomes faster, the exposure amount per reading becomes insufficient, so as shown in 3), the reading period is halved. Instead, the same data is adopted twice, and the number of adopted data per predetermined scanning distance is kept constant. Furthermore, if the scanning distance becomes faster (4), the same data is adopted four times.

At this time, if the light source has sufficient capacity due to the connection of an external power source, even if the scanning speed is the same as in 3), the light intensity can be doubled and the light emission time halved as shown in 5) (1! Light intensity). ), it takes 8 seconds to keep the reading speed and adoption data the same. This state remains valid until the state 6) in which the duty of the light source becomes 100%, similar to 2). When the scanning speed becomes faster than this, the process is similar to switching from 2) to 3).

FIG. 18 is a configuration diagram of the CCD:y controller section 63 and the LIS controller g64. The signal from the LIS 20 that reads the original is converted into data representing black and white of the original by the controller main body 64, and sent to the MPU via the bus 66.
Sent to 60. The light source 21 that illuminates the original 0 is usually
Although it is driven by the built-in battery 25, when an external power source is connected, it is detected by the detection circuit 81, and when this EXTP signal is detected, the controller switches the current switching rsEL of the light source drive circuit 8o. LEDON is a switching signal for the light source. 83 is a power switching circuit that also supplies power to the pond circuit. The EXTP signal is also sent to the MPU 60 via the bus.

FIG. 19 is a configuration diagram of the LIS 20. The signals shown in the timing chart of FIG.
is generated by the timing generation circuit 72, LIS2
Added to 0. LIS2 amplified by amplifier circuit 73
A signal representing black and white of the original from 0 is sent to a comparator 74.
It is binarized and sent to LIS controller 6 as RDATA.
4 is input. CK is the LIS controller 64,
FIG. 20 shows the operation timing using a clock for sampling RDATA. Also, the IN in Figure 19
The IT signal is an initialization signal for the timing generation circuit 72.
This signal controls the accumulation time TINT.

Control program> Below, we will explain the MPU that controls each part described so far.
The program will be explained with reference to the 70-chart.

The control program has the following three modes.

1 Display mode The stored information is displayed on the display unit LCD.

2 Read the original set in the carrier 3o from the READ mode reading section and store it in the memory.

300M mode Sends stored information to other devices using the communication function, or conversely stores information from other devices.

FIG. 21 is a 70-chart of the main routine for switching modes. When the MPU is started by resetting the MPU, after internal initialization, processing according to the set mode is performed. The mode settings are
It is set by the timer interrupt routine TAIs, which will be described later.

In steps 82 to S9, processing according to the designated mode is performed.

The reason why the flag DISPF is cleared in step S9 is because, as will be described later, normally when display modes are selected consecutively, the previous display state is returned to, but if the stored data is The 7-lag UDF in step S5, which initializes the display state when the data changes, is a flag indicating that the stored data has been changed.

FIG. 22 shows an initialization program.

First, if the previous mode was not DISP mode, P
LANE and display mode parameters are cleared in step S22, and the initial mode is set to display mode (step 323).

In step S25, TA interrupt is enabled. Step S24
VMODE is a temporary mode for mode setting.

FIG. 23 is a 70-chart of TA interrupts. T.A.
Interruptions are activated at regular intervals by a timer within the MPU, and a setting mode is input using an operation key. The mode change is performed as follows.

First, when the operation key 9 is pressed, the current temporary mode is displayed as shown in FIG. Furthermore, when key 9 is pressed, D I SP
-4READ-COM → READ to change the display contents in sequence. In this state, when key 10 is pressed, the current mode is executed. Also, at this time, the display disappears.

FIG. 24 shows step 70- of the above process.

First, in step S40, it is checked whether or not the key 9 is on, and if it is on and the mode is being changed, step S4
2, change MODE to the next mode and set the flag MODE
CF is set, and the current mode is displayed on the display section 6 in step S44. When you press key 9 for the first time, VMO
No DE change is made and the previous mode is displayed. When the key 10 is turned on during the mode change (MODECF="1"), the temporary mode VMODE is assigned to the mode MODE, and the flag MODECF is reset in step S47. Then, in step 848, the display is turned off.

26 and 27 are 7a-charts of display mode.

In display mode, the flag DI SP is set in step 5100.
F checks whether the previous display state is valid. If DISPF is 0 and the stored data has been changed by READ mode, etc., the display position DAX and DAY are returned to the beginning in step 5101, and the display magnification is M.A.G.
is returned to the same size.0 Next, in step 5102, DAX, DAY
, the data on PLANE determined by MAG is displayed in the control unit L.
Forward to CDC. Step 5103 to Step 51
At step 14, the operation keys 2 to 8 are checked, and if the relevant key is pressed, predetermined processing is performed and the changed data is transferred to the LCDC again. This is done in steps 5115,
This is repeated until the mode is changed to another mode in step 3116.

FIGS. 28 to 33 show the processing flow of each operation key.

In the UP process, in step 5131, it is determined whether the contents of the display address register DAY are greater than 0, and the display position is moved upward. To move the display position in the vertical direction, set the vertical display address renostar DAY to 1 in step 5132.
This is done by reducing. However, the content of the display address DAY is already at the beginning (D AY = O).
In this case, it cannot be moved.

DOWN processing is the opposite of UP processing. However, the lower limit of the display is when point P, (or P,) in Fig. 44 is at the lower end position Y.
Since the position has reached MAX, the display register DAY is YLr determined by the magnification MAG and the vertical LENGTH of the LCD.
If it is less than MIT, it cannot be moved.6 Therefore, after performing the calculation in step 3140,
Proceed to step 41, and the contents of the display address register DAY are YL.
It is determined whether it is smaller than IMIT, and if it is smaller, the process advances to step 5142, where 1 is added to DAY, the display is lowered by 1, and the process returns.

The RIGHT process 5150 moves the display position to the right.1 Horizontal movement of the display position is performed using the horizontal display address D.
This is done by increasing AX by 1 (step 5
153). However, the right end of the display is the point P in Fig. 44, (
Since this is the position where the display address register DAX (or P,) reaches XMAX, it must be smaller than the limit value XLIMIT determined by the display address register DAX, the magnification MAG, and the i+irWIDTH of LLCD.

Therefore, after performing the calculation in step 5151, the process proceeds to step 5152 to determine whether the contents of the display address register DAX are smaller than XLIMIT. If it is, the process proceeds to step 5153 to add 1 to DAX and shift the display by one position to the right. Return.

LEFT processing 5160 is the opposite of RIGHT processing. However, if DAX is already at the left end (DAX; 0), there is no movement of 8 meters.

In the ENLARG process 8170 in FIG. 32, the display magnification M
The MAG, which increases the AG (in the direction of enlargement), is increased every two steps (step 5171). However, if the maximum magnification MMAX has been reached, it cannot be changed (step 5179), and in the case of enlargement, the display area is set to PLANE.
may be missed, but the next REDUCE process 5180
If the magnification is returned to the original magnification, the display position will not return, so the display position is not corrected.

In the REDUCE process 5180 in FIG. 33, the display magnification M
MAG is decreased every two steps (step 5181), but if the minimum magnification MMrN has been reached, it cannot be changed (step 5182).

FIG. 34 is a chart from 70 to READ mode.

READ mode includes normal processing, two interrupt processing,
Consists of 5YNC interrupt and timer interrupt. The 5YNC interrupt is activated when the synchronization signal 5YNC is input to the MPU, and the moving speed C2 of the carrier 30 is measured. On the other hand, the timer interrupt is activated by a timer Toe built into the MPU, and the original M information is sequentially read from the reading section into PLANE in the memory in synchronization with the moving speed of the carrier.

First, the normal routine shown in FIG. 34 will be explained.

First, in step 5201, the read mode r is set.

Reading of original data signals from LIS is usually done using PLA.
This is done from the beginning of the NE (RAM=0), but since the previous data is changed, there are 8 times when reading from the middle is required. In this case, if key 5 is on when switching to READ mode, it will be read from the currently displayed position as change mode (UDF = "1"), and if key 4 is on, it will be in overlay mode. (OL F = "1") and addition to the previous data is performed.

FIG. 35 shows the above processing flow.

First, in step 5221, the 7-lag UDF in read mode,
Clear OLF, return the read address RAX and RAM to the beginning in step 5222t', determine whether key 5 is on in step 5223, and set 7 in step 5224.
Determine whether LAG DISPF is “1”, key 5 is on, and display data is valid (DrSPF
="1"), the 7-lag UDF is set in step 5225, and the display addresses DAX and DAY are set to read addresses. Further, if key 4 is on in step 5226, a 7-lag OLF is sent in step 5227.

Referring again to FIG. 34, after setting the read mode, parameters are initialized in step 5202.

The parameters include a counter LOCK to synchronize the carrier speed and reading speed, ROVER1 to check the capacity of the storage area PLANE, TOVER7 lag to limit the reading time, and READF7 lag to indicate permission to read into PLANE. . After initializing the parameters, the 5YNC interrupt is enabled in step 5203. After this, when the carrier 30 is moved, the reading speed is corrected every time the synchronization signal 5YNC is input. Then, measurement of the moving speed is started by a 5YNC interrupt, which will be described later. When the detection of the movement speed is completed, in step 5204, the LO
Since CK is determined to be 0a, TBm is allowed to be included in order to read actual data in step 5205. From then on, if 7 lag READF is set, T
The read data is written to PLANE by the B interrupt routine! be done. From then on, in steps 5206 to 5211, REA
DF is normally set to "1", but key 2°, key 3. If either key 7 or key 8 is turned on, the data at that position is reset so that it will not be read.

Reading is performed using the flag TOVER, ROVER (7
') exits when either is set. The reading ends with the TB interrupt and SYN in step 5214.
This is done by prohibiting C interrupts. Also, if you are not in update mode or overlay mode, PLAN
The remaining area on E is cleared (steps 8215-8
217).

FIG. 36 shows the 5YNC that detects the speed of the carrier 30.
The interrupt is 70-. The speed detection is performed using the light emitter/receiver 22a,
22b detects the code mark 32, and the pitch LSYNC of the 5YNC mark is calculated based on the time interval of the synchronizing signal 5YNC pulse generated when the code mark 32 is detected by the code mark 22b. Therefore, for speed detection, 5 pulses of at least 2 pulses are required.
YNC pulse is required. LOCK is a counter for this purpose, and is decremented by 1 every 5 YNC pulses, and when it reaches zero, it indicates that the detection is complete. In the 5YNC interrupt,
The current time, which is the content of the reference timer TF, is the current 5YN.
It is stored in step 5231 as the C pulse generation time Tc. Next, the counter L○CK is checked in step 5232, and if it is not zero, it is decremented by 1 in step 5233.

Since the pulse interval is the value obtained by subtracting the previous pulse generation time Tp from Tc, the carrier moving speed C■ is LSY
It is the value obtained by dividing NC by that value (step 5234)
. After calculating the pulse interval, Tc is saved as updated data of Tp (step 5235). When the carrier 30 is moved manually, the moving speed changes;
It is corrected by updating the moving speed C■ for each YNC pass.

In addition, in the case of manual operation, the moving speed of the carrier 30 may become extremely high. In such a case, the response speed of the linear image sensor LIS of the reading section will not follow, making it impossible to obtain the necessary sampling interval. Therefore,
In this device, the sampling period is changed depending on the moving speed of the carrier 30. In step 8236,
The current speed CV is divided by twice the reference speed VREF, and the integer part is calculated as a temporary sampling rate VSRATE, and the sampling period is changed by the TB interrupt routine. Finally, the timer Tc for time over check is initialized and set to Lo. Time over is determined to be the end of the carrier or the end of reading when no 5YNC pulse is input for a certain period of time.

The end of TL is checked by TB interrupt.

FIG. 37 is a 70-chart of timer interrupts.

A timer interrupt is activated when the value of the always-operating timer TF and the timer register TDC match. LIS
Sampling of document data from 20 is based on the moving speed Cv of the carrier 30 obtained by the 5YNC interrupt processing and the document reading pitch LSANPL set in advance.
The sampling interval Ts is determined by the E sampling rate 5RATE. Timer TB interrupt is determined by this TS.

For the 78 interrupt, first, in step 5241, the annual 78 interrupt cycle Ts is determined from the time over timer TL.
destroy it. Next, provisional sampling rate) VSRAT
The current sampling rate 5RATE is determined from E and the external power supply signal EXTP (steps 8242 to 246).
).

In step 5247, 5RATE, LSANPLE,
The current reading cycle Ts is obtained from CV, and the sum with the counter TF at that time is set in Toe.

As a result, the 78 interrupt is activated again after Ts.

Next, the data read at the previous Ts is read from CCDC and written to PLANE. However, in the −th 78th interrupt, the previous Ts has not been set, so the PLA
Writing to NE is not performed. Therefore step 52
It is determined whether 5RATE2 cleared in step 02 is set in step 5257.

Next, if the 7-lag READF is 1'' in step 5249, data is read from CCDC in step 5250 and stored in PLANE indicated by the read address RAM (step 3252).

The store routine of step 5252 is shown in FIG.

In FIG. 17, in step 5451, overlay 7
Determine the lag OLF, and if it is not 1, step 5452
In step 5453, the data is written to PLANE as it is, and when it is 1, it is logically summed with the previous data in step 5453 and written to PLANE.

At this time, the number of writes changes depending on the previous sampling rate) SRATE2. However, if the PLANE area is exceeded, the writing is terminated in step 5254, the ROVER7 lag is set in step 5258, and subsequent 78 interrupts are prohibited in step 925. If writing is finished normally (step 525)
6) Set the current 5RATE to 5RATE in step 5257
Evacuate to 2.

Finally, check the time overtimer TL,
If no 5YNC pulse is detected for a certain period of time in step 8260, reading is completed and the process goes to step 8261.
The OVER7 lag is set and the 78 interrupt is disabled in step 8262.

FIG. 38 is a 70-chart in C0M mode.

The C0M mode controls data transmission between the main body and external MS equipment. At this time, whether to perform transmission or reception is automatically switched 1) depending on the connected device.

In C0M mode, first check the connection with external equipment. This is done by manually inputting data from the receiving section and checking whether the data is a predetermined connection code. When the connection is confirmed, the transmitter outputs a connection response message and then waits until an establishment code is sent.

Based on the above connection sequence, it is determined that the transmitter/receiver power of the other party is normal.

When the connection sequence is completed, a command is input in step 5302, and in response to this command, either data transmission processing 5END (steps 5303, 5304) or data reception processing RECIEVE is executed (steps 5305, 8306).

If a command other than this is input, step 530
In step 7, a warning that connection is not possible is output, and the process ends in step 8308. This command may be, for example, a code indicating the type of device.

FIG. 39 shows the connection confirmation sequence 70-.

First, in step 5321, received data is input, and in step 5322, a waiting state is entered until a connection code is detected. If a connection hood is detected, the connection response is sent to step 532.
3, and waits until the establishment code is detected (steps 5324 to 5325). The above sequence confirms that both transmission and reception have been successfully connected to the other device.

On the other hand, in the end sequence, as shown in FIG. 40, only the close call code is transmitted (step 5341
).

FIG. 41 shows the reception path 1REc r EVE(7)7Cl
-It is a chart.

The received data received by the receiving unit 51 consists of two types: full address data that determines the storage address to PLANE, and pattern data that is actually stored.

In RECI EVE, first, in step 5351, the PL
Decide the write mode to ANE. The same method as in the READ mode shown in FIG. 35 is used. however,
The write address is not used as is, but is used as a temporary value. VRAX and VRAY in step 5352 are temporary value save data.

This provisional value is modified by data from an external device.

First, if it is determined in step 5355 that the data following the command is pattern data, the data is transferred to PLANE in step 5358 as a relative addressing method.
After writing to , address RAX is incremented by 1 in steps 5359 and 5360. Further, if the data of the command size is address data, step 53
If the determination is made in step 56, the provisional value is modified with address data in step 5357. From now on, step 5
The process is repeated from data input at 353 until an end code is detected. Finally steps 5361-5363 RE
Similar to the AD mode, if the mode is neither update mode nor overlay mode, the remaining area is cleared.

Regarding the address update method, normally when pattern data is received continuously, the RAX
increment only, and when it reaches X M A X,
Ignore subsequent pattern data (step 5359
), this is information larger than PLANE, or PLANE
This is to prevent distortion of the pattern when writing is performed from the edge.

On the other hand, when updated by address data, the fourth
As shown in Figure 1, it differs depending on the address/data format and write mode.

There are two types of address formats: absolute format and relative format.The address format is determined in step 8381, and if it is absolute format,
The address received in step 8383 is used as the direct write address; if in relative format, step 8383
The value added to the tentative value initially set in step 84 is used.

However, even if the relative format is used, if the writing mode is the overlay mode, the absolute format is used for alignment with the previous data (step 9382).

Further, if the set 7 dresses exceeds the PLANE area, the maximum value is limited in steps 8385 to 8388.

In 5END mode, data transfer is unconditionally performed by PLA.
This is done from the beginning of the NE. Data transfer is done using RECI
As in the case of EVE mode, address data and
It is in the form of pattern data that follows.

The pattern data does not include data in which all 0'' are used. This is to prevent the transfer of useless data such as continuous blanks. Therefore, there is pattern data in which all 0'' is included. If so, skip the address. Therefore, address data is transferred before the next pattern data is transferred.

FIG. 43 is a 70-chart in 5END mode.

In the 5END mode, address R is first entered in step S401.
Set the initial values in AM and RAM, and clear the 7-lag C0NTF. C0NTF is a flag indicating that non-zero pattern data is continuous. After initialization, the data in PLANE is sequentially checked in step 5402, and if it is not zero, the 7-lag C0NTF is checked in step 5404, and if the data is to be transferred following the previous data, that is, if C0NTF="0". If so, step 54
In step 07, the data is transferred as is, and if it is the first data, the address is transferred in the current step 5406, and then the data is transferred. Also, at this time, a flag C0NTF is set in step 5405. If the data is zero, only the 7-lag C0NTF is reset in step 5403. In this way, while incrementing the address in step 8408, the PL is updated in step 5409.
After transferring to the rear end of ANE, output the end code and 5
Exit END mode. FIG. 44 shows the flow of updating the address.

In the above embodiments, the main body shape is a special shape as shown in FIG. 1, but the shape is not limited to this, and it may be a file shape. In this case, it is possible to not only bind the originals but also store the carrier. The carrier can also be used as a binder for original documents. In this case, it would be easier to arrange the mark on the carrier in the same direction as the document surface and the detection section to be aligned with the document reading section. Furthermore, since the operation section and display section are also large, it is also possible to add editing calculation functions and the like.

Further, regarding the code mark, although an optical type is described in this embodiment, a magnetic type may also be used. In this case, there is an advantage that malfunction does not occur even if the mark becomes dirty.

Effects of the Invention As detailed above, in the manual image reading device of the present invention, a synchronization signal is obtained by reading the code mark etc. provided on the auxiliary member for loading the document, so that it is possible to manually read the document. Even if the feeding speed is uneven during feeding, image signals can be read accurately, and images can be read with high accuracy using a simple and inexpensive reading device.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the image reading device of the present invention, Fig. 2 is a perspective view of the embodiment shown in Fig. 1 with the upper frame opened, and Fig. 3 shows an example of the carrier. A perspective view, FIG. 4 is a perspective view of the carrier shown in FIG.
6 is a cross-sectional view of the embodiment shown in FIG. 1, FIGS. 7 and 8 are plan views showing an example of the display section, and FIG. 9 is a diagram showing the transmitting and receiving sections of the embodiment shown in FIG. 1. 10 is a side view of the main parts of Fig. 9, Fig. 11 is a block diagram of the control section used in the embodiment of Fig. 1, and Figs. 12 to 16 show the operation of the main parts. FIG. 17 is a 70-chart of the store routine, FIG. The figure is a waveform diagram for explaining the operation, and FIGS. 21 to 4411 are flowcharts showing the operation of the embodiment of FIG. 1. 1... Image reading device main body, 1a... Upper frame, 1
b...lower frame, 1c...shaft, IX...bottom surface,
IY...Top surface, 1d...Slit, 1e...Engagement claw, 1h...Engagement recess, g...Gap, 6...Display section, 2.3, 4, 5, 7, 8, 9, 10...key,
20...LIS, 21...Light source, 23...Rod lens, 25...Battery, 26...Fixing plate, 27
... Optical path, 30... Carrier, 31a... Base, 31b... Cover, 32-, Handle, 33...
・Code mark. Patent Applicant Minolta Camera Co., Ltd. Representative Patent Attorney Aoyama Ao Toto 2 Ka 13 Figure 6 Figure 7 Figure 8 Figure 9 Rin 11 'JII 14 Figure 155a Yama 16 Another dispute! ! ?廿 廿417s> 4- 1st edition - 2nd ff Conflict over management management + 17th figure 18th figure 19th figure ff n L + ++-+++++
JFigure 28 Atsushi 296 Figure 30 Figure 31i! i! 32nd cause
Figure 33 Figure 351 Figure 36 Figure 38i9 Figure 39 Figure 40! ! ! No.410 @425 No.43! elU No. 44

Claims (1)

[Claims] (1) An auxiliary member that holds and moves the original, a detection means that detects the amount of movement of this auxiliary member and outputs a signal every fixed amount of movement, and a reading means that reads information on the original held by the auxiliary member. What is claimed is: 1. A manual image reading device, characterized in that information on a document is read by a reading device in synchronization with a signal from a detection device.