JPS60126770A - Data processing unit provided with image scanner - Google Patents

Abstract

PURPOSE:To store a picture data as sentence information of a processing unit and to display effectively the read picture information by compressing the picture information read by an image scanner at each line and transmitting the compressed data and the original data to the processing unit. CONSTITUTION:A main CPU20 is provided to the data processing unit 4; and a display controller 22, printer controller 24, editing program 26, sentence memory 27, and a floppy disc controller 28 are connected to the CPU20. A slave CPU30 and a bus controller 36 of the image scanner 5 are controlled to the CPU20. The picture data is read by an optical read section of the scanner 5, a coding circuit 35 compresses the picture information at each line and the compressed picture information is transmitted to the CPU20 together with the original data. Then the picture information data is stored in the memory 27 as the sentence information and the picture information read is displayed on a CRT23 effectively by the control of the CPU20.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a data processing device equipped with an image scanner that optically reads image information from a manuscript, and the data processing device is, for example, a text processing device (word processor). The present invention provides a system for synthesizing and editing text information such as characters and symbols input from the keyboard and image information read and input by the image scanner.

<Prior Art> In addition to characters, it is required to insert image information such as map 1 figures and graphs 7 into general documents. Conventionally, when inserting image information, the coordinate points of each graphic element are indicated on the display device using a keyboard, and the image information is input by combining one straight line, one circle, and one figure, and is synthesized with text. However, this method also has limitations in inputting various image information, and requires complicated operations.

In addition, in some large computer systems, an image reading device was connected as a system terminal device, but like other printer terminals, it is installed as a single terminal device that is maintained by an external cable, making it an expensive system. It became.

In particular, image information optically read from a document is represented by 1 bit (black tt 1 r+, white 'o'') per pixel, and if it is read at a density of 8 dots/tone, for example, the image scanner A large memory with a storage capacity of about 4 megabits was required for one A4 size sheet, and this was necessary to be installed in the image scanner because it was in the computer itself.

Purpose of the present invention In view of the above-mentioned problems, the present invention provides a text processing system that efficiently combines an image scanner that reads images of printed manuscripts, etc., and a text processing device without increasing the size of the system, thereby providing text processing with excellent operability. The feature is that it provides a device.

In particular, image scanners are equipped with an optical reading device that reads the document, an encoding circuit that compresses image information, and a decoding circuit that decodes the compressed data into image information of raw data. and a display memory that receives and stores raw data together with compressed data in order to display the read image information.

With this configuration, the image information read by the image scanner is compressed at least line by line, the compressed data and its raw data are transferred to the processing device, and the compressed data is stored as text information in the processing device. Also, the raw data is stored in the display memory as read image information and immediately displayed.

With this configuration, lower costs and faster processing times are realized.

<Embodiment> Fig. 1 shows the external appearance of a data processing device (word processor in this embodiment) which is integrally provided with the image scanner of the present invention. 1 is a word processor control unit; An image scanner 5 is built in, and an editing control device 4 and two Crobby disk devices 9, 9 are built in at the bottom.

The scanner 5 has an insertion opening 10 for reading originals formed on its upper surface, and further has an original ejection opening 11 formed on its outer side surface, in which an ejection stacker 12 is provided so that originals can be taken out from the front. .

The original inserted from the original insertion slot 10 is fed to the optical reading section by an internal feeding means, the image information is read, and then ejected from the ejection opening 11 by the feeding means to the stacker 1.
It is held at 2.

This word processor control unit 1 is installed next to a console desk 7 having approximately the same height.

A CRT display 2 for displaying the above-mentioned image information and text information is installed on the desk 7, and in front of the CRT display 2 is installed a keyboard 3 having character entry keys, 1 control keys, and the like. The keyboard 3 is connected to the control unit 1 via the CRT display 2 by a signal cable.

A printer 6 is installed on a stand 8 having approximately the same height as the desk 7, and prints the edited image information and text information to create a document.

This printer 6 is connected to the control unit 1 by a signal cable. In this way, the scanner 7" has a height that allows the operator to operate it while sitting on a chair, and allows the operator to operate the image scanner without having to stand up from the chair. It has become.

Next, FIG. 2 shows a block diagram of the apparatus shown in FIG. 1, and FIG. 2 will be described below.

In the figure, the right side shows the components of a data processing device (word processor) 4, and the left side shows the components of the image scanner 5.

A keyboard circuit 21 corresponds to the keyboard 3 in FIG. 1, and generates key signals corresponding to operated character keys and control keys.

22 is a display controller that controls the display of the CRT display 23 (corresponding to 2 in FIG. 1);
It has built-in display memory that supports the T screen. This display memory is formed by a dot refresh memory, and one
A 1-bit storage area is provided for each pixel.

24 is a printer controller for a dot printer (corresponding to 6 in Fig. 4) 25, which corresponds to one line (for example, 2
4 lines) Print buffer is built-in.

26 is an editing program memory in which various editing programs are stored.

Reference numeral 28 denotes a front heater controller (FD controller) for the floppy disk 29, which controls data writing or reading from the floppy disk.

A main CPU 20 controls each of the above circuits according to a program stored in a program memory 26, and is connected to each circuit by a data bus and a control bus.

Scanner 5 screen via master control bus Ray: 7cpuao is also connected.

Next, the scanner 5 will be explained b. 40 is an optical reading section, which has the same configuration as an optical reading device such as a general printer, and the document 41 inserted through the insertion slot 10 is passed through two sets of feed rollers 42. Fed by .42.

At the center, the reading surface is illuminated by two light sources 43, such as fluorescent lamps, and a reading device 32, such as a COD sensor, is arranged at the reflection position.

Reference numeral 31 denotes a paper feed control section, which feeds one line of original (8 lines/to) in the direction of the arrow in response to a control signal from the slave CPU 30.

The reading device 32 has a desired slice level determined by a control signal from the slave CPU 30, converts an analog photoelectric signal into a digital signal, and outputs the digital signal.

A line buffer 33 stores image information (raw data) for one line, and supplies this data to an encoding circuit 35 to convert it into compressed data.

This encoding circuit 35 converts the read image information into a MH code such as 1, which is known from the Facun Milli apparatus (G III), in order to reduce the amount of stored data.

This MH code represents consecutive white bits and black bits with predetermined code values. This compressed data is stored in data memories 37 and 38 via a data bus and a data bus controller, and is further stored in the text processing device 4.
is stored on a floppy disk.

A decoding circuit 34 decodes the compressed data on the floppy disk into raw data and stores the raw data in the line buffer 33.

Reference numeral 36 denotes a control circuit for switching the data bus and address bus to the data memories 37 and 38, specifically shown in FIG. One memory block of data memory 37 and 38 is the main CPU 20 (word processor)
When accessed by
It is controlled to be accessed by the slave CPU (scanner), and this operation is switched alternately.

These data memories 37 and 38 include areas AI and Bl for storing one line of raw data, and storage areas A2 and A2 for compressed data of the raw data. B2, both of which are set to the same address value.

Next, in FIG. 3, 37 and 38 are the data memories shown in FIG. 61, 63, 64° and 65 are multiplexers. These 61 and 63 are the address bus 53 connected to the main CPU 20 and the slave CPU 3.
0, a control line 55 that instructs writing or reading from the main CPU 20, and a control line 55 from the slave CPU 30.

Address data 2 supplied to this multiplexer is supplied to address circuits 62j60, respectively, and data memory 3
Access 7.38. Also, a write or read signal on the control line is similarly supplied to the data memory to instruct writing or reading.

The switching of these multiplexers 63 and 61 is
It is determined by the switching flip-flop F/F 69 which is set/reset by the switching signal from the PU 20, and at the time of reset, the data memory 37 is set/reset from the main CPU 20.
The data memory 38 is accessed by the slave CPU.
Accessed from 30. When the F/F 69 is set, the opposite is true.

Multiplexers 65 and 64 perform switching between the data bus 50 connected to the main CPU 20 and the data bus 64 connected to the slave CPU 30.

These switching operations are performed by a switching flip-flop F/F 69 similar to the multiplexers 62 and 60. Furthermore, since the data memories 37 and 38 are set to the same address value, they can be accessed as two memories by both CPUs 20.3 (H; tl).

Next, the operation of the data processing device (word processor) having the above configuration will be explained.

Text information consisting of characters, symbols, etc. is input from the keyboard 21j, edited into a predetermined format according to the editing program, converted into a pattern, stored in the display memory, and displayed, and the characters and symbols are encoded. The text is stored in the text memory 27 in the order of input.

Also, if you want to read and input the image information of the original with a scanner,
The operation is performed according to FIG. 4 by operating the document reading control key on the keyboard.

In Figure 4 (a), the main CPU (M-CPU) 2
A floppy disk (FD) 29 that issues a scanner reading command to the slave CPU (S-CPU) 30 and stores data indicating that image information is to be input into the text memory 26 and the image information C (compressed data). Store the address value of . Thereafter, it waits until a scanner write completion instruction is received from the 5-CPU 30 and the write completion flag in the M-CPU 20 is turned ON.

In FIG. 4(b), the 5-CPU 20 performs a scanner operation according to the scanner reading command, and the paper feed control unit 31
is driven to transport the document to the reading position (light source irradiation position). Thereafter, one line of image information is read from the original, and the raw data is stored in the line buffer 133. Furthermore, scanner BUSY is turned on. This is during BUSYON, M
- This is to prohibit the CPU 20 from switching the data memory, and the M-CPU 20 performs the switching during BUSYON.Subsequently, the address data is sent to the data bus controller 36 along with the write instruction signal, and the line buffer 33 is activated. The data is transferred to the data memory and stored in the area At (BL) of the data memory.

Initially, the switching flip-flop F/F is reset and the raw data is stored in the data memory 38. Furthermore, the raw data of the line buffer 133 is sent to the encoding circuit 3.
5 and undergoes compression processing, and the compressed data is transferred to the data memory (currently 38) in the same way as the raw data and stored in area B2.

When this operation is completed, the scanner turns BUSY OFF and the M-
A scanner write completion instruction signal is sent to the CPU 20. (
M=CpU2o turns on the write completion flag F upon arrival of this signal. ) Furthermore, the end of the document is determined by a sensor (not shown) that detects the end of the document, and if the result is negative, the paper feed control section 31 is driven again to transport the document by one line (in the direction of the arrow). . Furthermore, M-CPU2
0 to S-CPU by data memory switching instruction.
It is determined whether the data memory switching flag F in 30 is turned on, and if it is not turned on, it waits. Also, if it is ON, turn off the data memory switching flag F.
F and the above reading operation is repeated again.

On the other hand, if it is affirmed by the manuscript end judge,
A document end instruction is sent to the M-CPU 20, and the paper feed control section 31 is driven to eject the document to the stacker 12.

On the other hand, the M-CPU 20 executes the following operations when the write completion flag F inside the M-CPU 20 is turned on by the scanner write completion instruction signal from the 5-CPU 30.

First, turn off the write completion flag F, and turn off the scanner BUS.
It is checked whether it is YON, and if it is BUSYON, it is put on standby, and if it is not, it sends a switching signal to the bus controller 36 and inverts the switching flip-flop F/F. ). Furthermore, a data memory switching instruction signal is sent to the 5-CPU 30 (the S-CPU 30 turns on the data memory switching flag FON by this signal, and if it is in a standby state due to this flag F, it is canceled and continues).

Continue to check whether the display memory has exceeded its capacityvX'
)'-, if negated, supplies the read signal and address data to the data memory 38 and reads the area A,' (B-1)
5-The raw data stored by the CPU 30 is read out and stored in the display memory.

Therefore, the image information is displayed as is on the CRT display 23. Furthermore, the compressed data (data obtained by compressing the above raw data) previously stored in area A2 (B2) (currently B2) of the data memory by the 5-CPU 30 is
The data is read and stored in the address position of the floppy disk FD in the same manner as the raw data. Furthermore, if the document end instruction has not arrived, the above operation is repeated again.

In addition, the above display memory over judge generally
When the capacity of the display memory is exceeded because the display capacity of the RT display screen is relatively small and it is not possible to display all the image information of an A4 size document, for example, the loading of the raw data read out by the 5-CPU 30 is prohibited. Only compressed data is stored.

In this example, the read image information is stored in the display memory and displayed from above until the display exceeds the display limit, but when the display exceeds the display limit, the previous raw data is erased and the image information read after that is displayed. It's okay.

In the 5-CPU 30 again, when the data memory switching flag F is turned ON in response to a data memory switching instruction from the M-CPU 2°, the standby state is released, the image information of the document is read again, and the data memory (next, Data memory 3
7).

As a result, the data memories 37 and 38 have 5-CP
This means that they are accessed simultaneously by U30 and M-CPU20. In this way, by repeating the above operations, the raw data of the document read by the scanner is stored and displayed in the display memory, and all the compressed data is combined with the text data in the text memory 27 and sent to the front panel. The data is stored on the disk FD29.

As mentioned above, the image information input to the word processor (
raw data) is modified using the keyboard,
It is necessary to supply the raw data (corrected) of that line to the encoder circuit of the scanner and convert it back into compressed data to change the data on the floppy disk FD.

In addition, as described above, if you want to display image information that was not displayed by the display memory sprouter, read out the corresponding compressed data from the floppy disk FD29 and supply it to the decoding circuit of the scanner to convert it into raw data. Convert and store in display memory.

This decoding process will be briefly explained below (see FIG. 5).

The M-CPU2 receives a decryption instruction from the keyboard.
0 operates according to FIG. 5(a). S-CPU30
The fifth
Operate according to figure (b).

As is clear from the figure, compressed data is read from the floppy disk FD 29 from the M-CPU via the data memories 37 and 38, and is supplied to the scanner decoding circuit 34 to convert it into raw data. Convert. Also, the raw data is again stored in the display memory via the data memory. Therefore, the difference from the operation in FIG. 4 is that the M-CPU
20 writes compressed data to the data memory 37.38, and 5-CPU 30 reads compressed data from the data memory 37.38.

The M-CPU 20 uses area A2 (B) of one data memory.
2), and then write the compressed data to area At(B3').
When reading raw data, the 5-CPU 30 reads compressed data from area B2 (A2) of another data memory and writes the raw data to area Bl (At).

In this way, since the scanner supplies both compressed image data and raw image data to the word processor, which is a processing device, an inexpensive system configuration can be achieved.

Effects> As described above, the data processing device of the present invention is equipped with a reading device for reading images of printed documents etc. on the top of the control unit of the device, and therefore it is necessary to provide a dedicated space for the reading device. Since there is no image data and text data, the system configuration can be made compact, and the reading operation of the original to this reading device can be easily performed at the text editing operation position, and the input operation of image data and text data can be performed efficiently.

In addition, in this device, the image scanner is equipped with an optical reading device that reads the document, an encoding circuit that compresses image information, and a decoding circuit that decodes the compressed data into raw image information, while the data processing device is equipped with an optical reading device that reads the document. The image scanner comprises a memory for storing compressed data together with data, and a display memory for receiving and storing raw data together with compressed data to display the read image information, and the image information read by the image scanner is compressed for at least every l line. , the compressed data and its raw data are transferred to the processing device, and this compressed data is stored as text information in the processing device, and the raw data is sent to the display memory to be displayed, so the processing It is possible to achieve high speed and still be configured at a low price.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing the external appearance of the device of the present invention, and Fig. 2 is a configuration diagram showing the appearance of the device of the present invention.
The block configuration diagram of the device shown in the figure, Figure 3 is the data of Figure 2,
It is a block structure and a chart showing the configuration around the memory. 1: Word processor control unit, 2: CRT display, 3: Keyboard, 5: Image scanner,
6: Printer, 9: Floppy disk device, IO:
Original insertion slot, 11: Original output port, 12 Nissatsuka, 20
: Main CPU, 21: Keyboard circuit, 22: Display controller, 24: Printer control, 2
62 editing program, 28: floppy disk controller, 30 Nislepe CPU, 31: paper feed control section,
33 line buffers 7, 35: encoding circuit, 37 and 38: data memory, 40: optical reading section.

Claims (1)

[Scope of Claims] 1. A data processing device equipped with an image scanner that reads image information of a document by optical reading means, comprising means for storing image information from the image scanner together with data generated by the data processing device, and control thereof. - a first control means (M-CPU) for controlling the optical reading means and a means for storing image information of approximately 1 lines read by the reading means; and a second control means (S-CPU) for controlling these; an image scanner comprising: a CPU); and a storage means for data exchange accessed by the first and second control means, and each of the above means is integrally housed in one unit. A data processing device. 2. A means for converting the image information read by the optical reading means into a compressed code for each predetermined bit string, and supplying both the compressed data obtained by the means and the image information to the first control means. 2. A data processing apparatus comprising an image scanner according to claim 1, wherein the image information is stored in a display memory and displayed, and the compressed data is stored in a storage means.