JPS6224367A - Storing and retrieving device for picture information - Google Patents

Abstract

PURPOSE:To completely display the picture information on a display device by giving the size conversion to the picture information read by a reading means or the picture information retrieved by a storage means through a size converting means. CONSTITUTION:A size converting circuit 7 has the enlargement, reduction and strike-through action modes and works in response to the control of a CPU 2. When the read-out picture information is displayed on a CRT display device 16, the picture information supplied to a display interface device 10 from a page buffer 5 is reduced or struck through. The CPU 2 stores previously the capacity of the device 16 and makes the circuit 7 performs a reducing action in a prescribed reduction ratio or a strike-through action according to the capacity of the device 16. This omits a large size and high performance of the device 16 and therefore prevents the cost increase. Furthermore the display contents can be viewed more easily since the circuit 7 is actuated with operation of an operator.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention sequentially stores image information such as documents in a storage device, and stores various image information stored in the storage device. The present invention relates to an image information storage and retrieval device that searches and reads out required image information as needed.

(Prior Art) As is well known, devices have been developed that display image information read from a document image by a reading device or image information retrieved from a storage device on a display device. In this type of device, for example, the screen size of the display device and the reading size of the reading device are matched in advance, so that all of the read image information is displayed on the screen of the display device. .

Incidentally, in recent years, it has become necessary for devices of this type to display large document images read by a reading device or large image information retrieved by a search device on a display device. . However, in the past, the screen size of the display device and the size of the image information were uniquely defined, so the display range of the image information was constrained.

(Problems to be Solved by the Invention) This invention is intended to solve problems related to the display range of image information due to differences in image information and the screen size of display devices. It is an object of the present invention to provide an image information storage and retrieval device that can display image information completely on a display device, regardless of the screen size of the display device.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes, for example, a reading means for reading image information of a document, a storage means for storing the image information read by the reading means, and a method for retrieving from the storage means. display means for displaying the image information read out by the reading means, or the image information read by the reading means, and the image information retrieved and read from the storage means in a size that can be displayed on the display means; and a size conversion means for converting the size of the read image information.

(Function) The present invention is capable of converting the size of the image information read by the reading means or the image information retrieved from the storage means using the size converting means.
Alternatively, the searched image information is completely displayed on the display means.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, 1 is a main control device,
CPU 2 that performs various controls, various file sets (
A set of magnetic tapes 14 (described later) and each cover file (
A management information storage device storing management information for managing the magnetic tape 14), such as a floppy disk device 3
, a title memory 4 for temporarily storing title information read out from the LVR 13, which will be described later; a buffer memory, for example, a page buffer 5, having storage contents corresponding to at least one unit of image information (manuscript - page); A compression/expansion circuit 6 that performs compression (reducing redundancy) and expansion (returning reduced redundancy), a size conversion circuit 7 that expands or reduces image information, and electrically masks image information. It consists of a mask circuit 8, a turn generator 9 in which /main turn information such as characters and symbols is stored, a display interface device 10, and the like. Further, reference numeral 11 denotes a reading device, for example, a two-dimensional scanning device, which scans the original (document) 12 two-dimensionally with a laser beam light and obtains an electrical signal corresponding to the image information on the original 12 from a trap. . Reference numeral 13 denotes a magnetic tape device (hereinafter abbreviated as LVR) which is a large-capacity storage device, and the image information read by the two-dimensional scanning device 11 and supplied via the main control device 1 and the main control The index information created by the device 1 is sequentially stored (recorded) in a dedicated storage area of a storage medium, that is, a magnetic tape. A plurality of endless magnetic tapes (cassette tapes) 14 are prepared in accordance with the types of image information to be stored, and are appropriately set in the LVR 13. 1
Reference numeral 5 denotes a key ♂, which is used to input a unique title and various operation commands corresponding to the image information.

Reference numeral 16 indicates an output device such as a cathode ray tube display device (hereinafter referred to as CRT).
(referred to as a display device), image information read by a two-dimensional scanning device 11 and supplied via the main control device 1;
Alternatively, it displays index information, image information, etc. read from the LVR 13 and supplied via the main control device 1, and together with the display interface in the main control device 1, constitutes a large-scale display device. Reference numeral 17 denotes an output device 9, for example a hard copy device, which outputs image information read by a two-dimensional scanning device 11 and supplied via the main controller 1, or LVRJ, ? Index information, image information, etc. read from the main controller @1 and supplied via the main controller @1 are output as a hard copy 18.

Then, a page buffer 5, a compression/expansion circuit 6, a size conversion circuit 7, a mask circuit 8, a nogturn generator 9
, display interface device 10. two-dimensional scanning device 11
, LVR13, *-+3? -1" 15, CRT display device 16 and hard copy device 17 are CPU
2 no I/l) (input/output) :ff 7) 0
- are connected to the path 20 respectively. Also, title memory 4, easy pad 7a 5, compression φ expansion circuit 6, size conversion circuit? , mask circuit 8, pattern generator 9, display interface device 'iMzo, two-dimensional scanning device 11, LVRI J, CRT display device 16, and hard copy device 17 are respectively connected to the image path 30, and information can be transferred to each other. It is meant to be done.

By the way, in such an image information storage and retrieval device,
The magnetic tape 14 is called a file, and each magnetic chip f14 is given a file name depending on the type of image information to be stored. A collection of files of the same type or related to each other is called a fileset, and a fileset name is given to this fileset. In other words, a fileset name exists as a superordinate concept of a file name. On the other hand, the magnetic chi f14 has
A large number of image information recording tracks and several index information recording tracks are formed in a direction perpendicular to the traveling direction. Management information and various index information are recorded on the index information recording track. The management information includes the file name and file set name supported by the magnetic chip 7'J4, the confidential code, the title structure and title range that define the title conditions set corresponding to the image information, and the new title structure and title range. magnetic chi f
The index information is recorded in advance by the O(rate) for J4.In addition, the index information corresponds to each image information, and includes the title (up to 6 items) and address information indicating the recording position of the image information. In this case,
The address ti[K includes document size information that the operator inputs together with the title when storing image information, or document size information based on the document size detection function of the two-dimensional scanning device 11.

Here, we will briefly explain what kind of operation is performed in the above configuration.

First, the original 12 is set in the two-dimensional scanning device 11, and one magnetic tape 14 is set in the LVRJ 3. Then, the title corresponding to the image information of the manuscript 12 and the size of the manuscript 12 are entered in the key date 15, and
That key? - Input a memory operation command using the code 15. Then, the LVRI J operates, and the management information and all index information are read from the index information recording track of the magnetic chip 7014 and stored in the title memory 4 all at once. At this time, the CPU 2 determines whether the management information in the title memory 4 corresponds to the various management information in the floppy disk device 5, and prohibits storage of image information if this determination is not satisfied. That is, this is to determine that the magnetic tape 14 is not compatible with the system of the image information storage and retrieval device. On the other hand, if the above determination is satisfied, the CPU 2 determines whether the input title is inconsistent with the title of various index information in the title memory 4, and if this determination is not satisfied, storage of image information is prohibited. That is, this is
This is to prevent the same title from being recorded on the magnetic tape 14 set in the LvR 13. Then, when this judgment is satisfied, for the first time I
mgI! Storage of information takes place.

Then, the two-dimensional scanning device 11 operates to read the image information on the original 12, which is stored in the page buffer 5 via the mask circuit 8 and the size conversion circuit 7 (-). When one unit of image information is stored, the image information is read out from the page buffer 5 and supplied to the compression/expansion circuit 6, where it is compressed using the well-known Modify-Hoffman transformation and then re-entered using the 4-Zopuffer. 5
is memorized. Then, the compressed mourning image information in the 4-zopad 7a5 is supplied to the LVR13 through the size conversion circuit 7 and the mask circuit 8t, and the image information already recorded on the image information recording track of the cassette channel f14 is supplied to the LVR13. The information will be recorded later.

At this time, CPtJ' determines the recording position of the image information to be recorded, creates index information using this address information, the title and document size input in advance,
It is added to various index information in the title memory 4. Thereafter, the various index information in the title memory 4 strikes through the size conversion circuit 7 and the mask circuit 8, is supplied to the LvR 13, and is recorded on the index information recording track of the cassette tape 14.

In this case, various index information recorded on the index information recording track will be updated.

Furthermore, when searching for and reading out desired image information from among the various stored image information, the magnetic tape 14 on which the desired image information is recorded is set in the LVFt 13.

When a search/read operation command is input using the key bead 15, the LVRI J operates, and management information and various index information are read from the index information track of the magnetic tape 14, which strikes the mask circuit 8 and the size conversion circuit 7. The data is passed through and stored in the title memory 4 all at once. At this time, when a sort command is input using the keyboard 15, each piece of index information in the title memory 4 passes through the size conversion circuit 7 and the mask circuit 8 and is displayed on the CRT display device. In this case, a sequence number is attached to each type of index information displayed. The operator then searches for desired image information from among the various index information displayed and inputs the sequence number attached to the index information using the keyboard 15. Then, index information corresponding to the input sequence number is selected, and required image information is read from the magnetic tape 14 of the LVRJ 3 based on the index information. Then, this read image information is stored in the bezo pad 7a5 via the mask circuit 8 and the size conversion circuit 7. When one unit of image information is stored in the (-Zopuffer 5), the image information is read out from the page buffer 5 and supplied to the compression/expansion circuit 6, where it is inversely converted into the modifier and then again ( - It is stored in the Zipuffer 5. At this time, if a recording operation command is input on the keyboard 15, the image information in the page buffer 5 is supplied to the Bartco♂-device 17 via the size conversion circuit 7 and the mask circuit 8. , is recorded on the record paper here. Also,
If a display operation command is input through the key bead 15, the image information in the page buffer 5 is supplied to the CRT display device 16 via the size conversion circuit 8 and the display interface device 10, and is displayed there.

Next, the above-described compression/expansion circuit 6, size conversion circuit 7,
The mask circuit 8 and display interface device 10 will be explained in detail.

(1) The compression/expansion circuit 6 mainly performs the above-mentioned telecompression/expansion operations, but also has the following functions based on the control of the CPU 2. That is, for example,
It is assumed that the storage capacity of the buffer 5 corresponds to the image information of an A4 size document.

Therefore, during the image information storage operation, the original 12 is B.

size, there will be a portion in the storage area of the page buffer 5 that does not store image information.
For this reason, if all the image information in the storage area of the Zopuffer 5 is compressed, even unnecessary image information will be stored in the LVR 13.

Therefore, the CPU 2 controls the compression operation of the compression/expansion circuit 6 according to the document size information input when storing the image information, and performs compression processing only on the image information corresponding to the Bs size stored in the page buffer 5. I try to do that. FIG. 5 specifically shows the compression/expansion circuit 6 and the peripheral circuits of the (-Sopuffer 5.
1 is a line buffer that stores image information for each l line read from the K-Zipuffer 5 or (-Zipuffer 5
The image information to be stored in the memory is temporarily stored line by line. A timing generation circuit 32 generates a data clock signal corresponding to a pixel of image information and a line clock signal corresponding to each line. 33 is an address counter for specifying an effective area for image information in the line buffer 3]. 35,
Reference numeral J6 denotes a document size information holding unit, which holds, for example, A4 size information and B size information. 32
1 is a selection circuit which selects the output of the holding portions 35 and 36 in accordance with the size of the document 12 based on the command signal CMD from the CPU 2. A comparison circuit 34 compares the output of the address counter 33 and the output of the selection circuit 37. 38 is an end-of-line detection circuit, and comparison circuit 3
The timing generating circuit 32 is controlled according to the comparison result of No. 4 and the like.

(2) The size conversion circuit 7 has an enlargement operation mode, a reduction operation mode, and a strike-through operation mode, and performs the following operations according to the control of the CPU 2.

(a) During image information storage operation, the image information read by the two-dimensional scanning device 11 and supplied to the page buffer 7 is reduced or struck through. That is, for example, if the storage capacity of the page buffer 5 corresponds to the image information of an A4-sized document, it is impossible to store B4-sized image information in the (-no puffer 5. , when the document size information input from the keyboard 15 or the two-dimensional scanning device is larger than the capacity of the page buffer 5, for example, when the size of the document 12 is B4, the size conversion circuit 2 is converted to a predetermined reduction ratio. By doing this, there is no need to increase the capacity of the screen 4-zo-sofa 5, and it is possible to prevent an increase in cost and an increase in space.Furthermore, the CPU 2 When the information is the same as or smaller than the capacity of the peno pad 7a5, for example, the original 1
When the size of item 2 is A4 or B, the size conversion circuit 7 is operated in strike-through (reduction ratio "0", enlargement ratio ""0")
let

(b) During image information storage operation and when image information continues to appear,
(- Strike through the image information supplied from Zopuffer 5 to LVRJ 3 and the image information supplied from LVR1, ? to page buffer 5.

(e) The read image information is transferred to the hard copy device 17.
When recording with , the image information supplied from the K-zo sofa 5 to the hard copy device 17 is enlarged.

Reduce or strike through. That is, the CPU
2 causes the size conversion circuit 7 to perform an enlargement operation or a strike-through operation at a predetermined enlargement rate in accordance with document size information selected when reading image information and included in the next index information.

In this case, the enlargement operation is reduced by the above (&) term]
This is for restoring the ji image information to its original state. Also,
The CPU 2 causes the size conversion circuit 7 to perform a reduction operation or a strike-through operation at a predetermined reduction rate depending on the size of the recording paper in the hard copy device 17. By doing this, regardless of the size of the recording paper in the hard copy device 17, it is possible to reliably record one unit of image information that is successively produced.

(@) The read image information is displayed on the CRT display device 1.
6, the image information supplied from the page buffer 5 to the display interface device 10 is reduced or struck through. That is, the CPU 2 causes the size conversion circuit 7 to perform a reduction operation or a strike-through operation at a predetermined reduction rate based on the display capability of the CRT display device 16 stored in advance. By doing this, it is possible to make the CRT display device large and high-performance.
There is no need to do so, and increases in costs can be avoided. However, in this case, it is also possible to operate the size conversion circuit 7 by operating the oirator, and the display contents can be made easier to see.

(f) In addition to (f), strike-through is performed when the turn information taken out from the turn generator 9 is supplied to the page buffer 5 and added to the image information in the page buffer 5.

FIG. 4 shows the size conversion circuit 7.

41, 42, 43, 44, and 45.46 are shift registers each having, for example, 2048 pits, and the two-dimensional scanning device r
Image information signal v1 obtained for each scanning line of t11
Alternatively, the image information signal V read line by line from the page buffer 5 is sequentially shifted and held. And this shift resolution star 4 J, 42, 4
The contents of J, 44, 45, and 46 are each supplied to a sum-of-products calculation circuit 47 by 6 pits. In other words, the fifth
As shown in the figure, 6 pitsuto (X direction)
direction) is supplied to the product-sum calculation circuit 47. On the other hand, 48 and 49 are an X-direction distance calculation circuit and a Y-direction distance calculation circuit, which set point position information for the local information of the product-sum calculation circuit 47 according to the enlargement/reduction ratio setting information supplied from the CPU 2. It is something.

Therefore, when performing a reduction operation, the product-sum calculation circuit 47 performs a weight calculation based on the point B for the local information, as shown in FIG. That is, in Figure 4,
The position of point) B corresponds to the reduction rate of 1/3, and the position of point) B is set to the value "1".
” and point) The distance to each black bit surrounding point B (The distance to the black pit in the diagonal direction is 7") is multiplied (weighted calculation), and the sum of these products is output. In other words, the value output from the product-sum calculation circuit 47 is a local density with emphasis on I India B. Then, this local concentration is compared with a constant value C in a comparison circuit 50, and the comparison circuit 50
A signal corresponding to one pixel formed by reducing the local information from is output. In this way, calculations are performed on all local information set for one unit of pixel information.

Note that in the enlargement operation, a point is determined according to the enlargement ratio, and based on this point, an operation substantially inverse to the above operation is performed.

(3) The mask circuit 8 masks unnecessary portions of image information, and performs the following operations under the control of the CPU 2.

(a) During the image information storage operation, the image information read by the two-dimensional scanning device 11 and supplied to the page buffer 5 is masked according to the input document size information. That is, since the two-dimensional scanning device 11 has a fixed scanning area regardless of the size of the original 2,
Only the area corresponding to the size of is set as valid image information, and thereby unnecessary images such as dust and scratches on the document table of the two-dimensional scanning device 11 can be ignored.

(-Zopuffer 5 does not store new image information and the apparent image information (masked parts) around it all at once.) Even if (-Zopuffer 5 stores old images) Even if the information is stored, the old image information will not be added to the new image information.Moreover, by doing this, there is no need for control to clear Zopuffer 5 in advance. Become.

(b) When reading image information, the image information read from the 4-zipuffer 5 is masked according to the document size information included in the selected index information, and is supplied to the hard copy device Noah or the display interface 10. . In this case, in the hard copy device 17, unnecessary toner does not adhere to the photosensitive drum (not shown), and stains on the photosensitive drum can be reduced.

FIG. 6 shows the mask circuit 8. That is, 5
1.52 is a down counter of the first counter 9, which is an X-direction mask counter and an X-direction non-mask counter. The clock signal corresponding to the pixel of image information read out from the page buffer 5 line by line (corresponding to line scanning of the two-dimensional scanning device 11) is counted. Here, in FIG. 7, F
is a scanning area of the two-dimensional scanning device 11, and the original 12 is set in this scanning area F. In this case, the first mask area in the primary direction, that is, the X direction, has a distance of X1, and the non-mask area (effective area) has a distance of X, -X1. Also, the first mask area in the secondary direction, that is, the Y direction, is at a distance of Y
1, and the non-mask area (effective area) is at distance y, -y
1 Totoru. Thus, the counter 5 is preset with the value xi, and the counter 52 is preset with the values x and -xl. 5.1 and 55 are decoders which output a logic ""1" signal when the contents of the counters 51 and 52 reach 10m.
．． A second counter 56 is a down counter that is a Y-direction mask counter and a Y-direction non-mask counter, and is a down counter that receives a signal from the corresponding line clock signal E1 or page buffer 5 for each line scan in the secondary direction of the two-dimensional scanning device 11. The line clock signal E corresponding to each line of image information read out line by line is counted. Therefore, the counter 55 is preset with the value Yl, and the counter 56 is preset with the value Y, -.
The value of yt is preset. 57
, s's is a decoder, and the contents of counters 55 and 56 are ``
When it becomes 0#, a logic ``''1111 signal is generated. 5
In the 9Fil'' circuit, the image information signal v1 supplied from the two-dimensional scanning device 11 masks and non-masks the image information signal V supplied from the base puffer 5.In this way, in the X direction, first Counter 52 counts down and when the content reaches 101', counter 52 starts counting down.
When the content of the counter 52 becomes 0'', the counter 51.52
is preset again and adapted to the next line. On the other hand, in the Y direction, the counter 55 first counts down, and when the content reaches ``0'', the counter 56 starts counting down. Then, when the content of the counter 56 becomes "0", the counters 55 and 56 are preset again to adapt to the next line.

(4) FIG. 8 shows the display interface device 10. This display interface device 10 includes an image information rotation circuit 60 that can rotate image information every 90 degrees.
, 1st and 2nd glue fresh memo +) 75, 76,
It consists of a phase determining circuit 77 and a cursor display device 80.

Thus, the image information read from the EnoPuffer 5 and reduced by the size conversion circuit 7 is transferred to the image information rotation circuit 60.
The image is rotated to a predetermined angle as necessary and stored in the first refresh memory 75. The image information read from the first fresh memory 75 is supplied to the CRT display device 16 via the phase determining circuit 77 and displayed there. At this time, the cursor display device 8
When a cursor of a predetermined size is set on the image information of the CRT display device 16, that is, the image information in the first paste memory leaf 5 by 0, the image information in the area corresponding to the cursor is It is read from the memory 7 and is reduced by an arbitrary reduction rate (determined by the size of the cursor and the storage capacity of the second refresh memory 76) K in the size conversion circuit 7 and stored in the second memory 7.
5 is stored. Thus, when a partial display command is input through the key gate 15, partial image information in the second refresh memory 76 is displayed on the CRT display device 16. In this case, by selectively inputting a partial display command and a whole display command through the key gate 15, the partial image information in the second refresh memory 76 and the WCl
It can be displayed selectively with the entire image information in the glue fresh memory leaf 5. By the way, the phase determining circuit 77 is composed of an exclusive OR circuit 78 and an AND circuit 79, and the exclusive OR circuit 77 has a first refresh memory 75 or a second refresh memory 7.
An image information signal read out from 6 is supplied, and
A phase signal H based on the inverted key with the key in the negative 15 is provided. This phase signal H is a logic "1" or "O" signal, and can be set arbitrarily to select one of them.
The color (white, black) of the image displayed over the entire display screen of the CRT display device 16 can be freely reversed. Furthermore, the AND circuit yslC is supplied with the image information signal from the exclusive OR circuit 77 and the unblanking signal I from the CPU 2 and the like. In other words, the unblanking signal I allows the effective display area of image information on the CRT display device 16 to be set.

Here, FIG. 9 shows an image information rotation circuit.

In FIG. 9, 61, 61. ...is 128X128
= 1-bit output memory chip (hereinafter referred to as RAM) that can randomly access 16384-bit addresses
The information is arranged in a matrix corresponding to the primary direction (X direction) and secondary direction of the image information. 62 is a decoder, which decodes 0 degrees and 90 degrees according to the angle designation signal R from the CPU 2.

It outputs rotation commands of 180 degrees and 270 degrees.

Reference numeral 63 denotes a selector circuit which outputs the clock signal E corresponding to each bit (pixel) in a line of image information and the line clock signal E corresponding to each line of image information.
is output to output lines corresponding to rotation commands of 0 degrees and 180 degrees.

64 is a 128-decimal counter. 65 is a quaternary counter. 6
6 is a 128-decimal counter. 67 is a quaternary counter. Reference numeral 68 denotes a dart circuit, which opens in response to rotation commands of 90 degrees and 180 degrees.
The addresses in the X direction are sequentially specified. 69 is r
-) circuit, which opens in response to rotation commands of 270 degrees and 180 degrees, and addresses of each RAM 61 in the Y direction are sequentially designated by this circuit. A decoder 70 selects each RAM 61 according to the counters 65, 67 and the angle designation signal R. Here, the table below specifically shows what kind of operation is performed.

Furthermore, FIG. 1O shows a cursor display device 80. In FIG. 10, reference numeral 81 denotes an X-direction cursor memory, which holds position information on both sides of the cursor in accordance with write code information J from the CPU 2. 8
Reference numeral 2 denotes a Y-direction cursor memory, which holds position information of the upper and lower sides of the cursor, respectively, in accordance with the write code information J from the CPU 2. Reference numeral 83 denotes an X-direction address counter that counts the cursor clock signal P supplied from the first refresh memory 75. A Y-direction address counter 84 counts the horizontal synchronization signal Q supplied from the first refresh memory 75. 85 is a decoder, which outputs logic @1 when the contents of the counter 83 match the position information on both sides.
A decoder 86 outputs a logic ``1'' signal when the contents of the counter 84 match the position information of the upper and lower sides, respectively.

87.88 is a T-7 lip flop. 89 is an OR circuit.

901.902. 903 is an AND circuit. W is a blink signal. Cv is a cursor video signal.

On the other hand, in FIG. 11, 92 is a cursor key, and the key is provided on one door 15. As shown in FIG. And 93°94.95,
Reference numeral 96 is a movement key, which emits a movement pulse while being pressed. 9
7 is a movement key to move the cursor to the upper left corner. 98 is an enlargement key for enlarging the cursor, and each press generates a quarter pulse. 99 is a rounded reduction key that makes the cursor smaller, and generates one pulse each time it is pressed. Also, Figure 12 shows the preset sizes of the cursor, 81 # 82 m 83
There are #S4 sizes. FIG. 13 (&) shows the display state of the cursor S. That is, the image information read from the first glue memory 75 is displayed, and the cursor S corresponds to a predetermined portion of the image information. At this time, if a partial display command is input, partial image information will be stored in the second glue fresh memory 76, as described above, and a display as shown in FIG. 13(b) will be made. Therefore, FIG. 14 specifically shows what kind of operation is performed, in which (a) shows the cursor clock signal P1, (b) shows the horizontal synchronizing signal Q, and (e) shows how the decoder 85 outputs it. , (d) is the output of the decoder 86, (,)
is the output of the AND circuit 9o1, (f) is the output of the T-7 logic circuit 87, (g) is the output of the -7 logic circuit 88, (h) is the output of the ant 0 circuit 902, and (i) is the output of the OR circuit 89. This is the output.

[Effects of the Invention] As detailed above, according to the present invention, the size of the image information is changed by converting the size of the image information read by the reading means or the image information retrieved from the storage means by the size converting means. Accordingly, it is possible to provide an image information storage and retrieval device that can completely display image information on a display device, regardless of the screen size of the display device.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic diagram of the overall configuration, FIG. 2 is a detailed configuration diagram of FIG. 1, and FIG. 3 explains the operation of the compression/expansion circuit. Fig. 4 is a block diagram of the size conversion circuit, Fig. 5 is a diagram for explaining the operation of Fig. 4, Fig. 6 is a block diagram of the mask circuit, and Fig. 7 is a block diagram of the scanning circuit. 8 is a diagram showing the correspondence between areas and documents, FIG. 8 is a configuration diagram of a display device, FIG. 9 is a configuration diagram of an image information rotation circuit, and FIG. 10 is a configuration diagram of a cursor display device.
Figure M11 is a configuration diagram of the cursor keys, Figure 12 is a diagram showing the size of the cursor, Figure 13 (a) and (b) is a diagram showing the display state of the cursor, and Figure 14 is for explaining the operation of Figure 10. This is a time chart. DESCRIPTION OF SYMBOLS 1... Main control device, 5... Buffer memory ((-no puffer), 7... Size conversion circuit, 11... Reading device (two-dimensional scanning device), 16... Output device (CRT
display device), 75... first refresh memory, 76... second refresh memory, 80...
...Cursor display device. Applicant's agent Patent attorney Takehiko Suzue No. 10 Figure 5 Figure 70. 10

Claims (1)

[Claims] a reading means for reading image information of a document; a storage means for storing image information read by the reading means; and a display for displaying image information retrieved and read from the storage means or image information read by the reading means. and size conversion means for converting the size of the image information retrieved and read from the storage means or the image information read by the reading means to a size that can be displayed on the display means. Image information storage and retrieval device.