JPS6048661A - Picture information processor - Google Patents

Abstract

PURPOSE:To attain high speed data transmission with a few signal lines by connecting a facsimile device and a personal coputer with plural two-way data lines and two-way control signal lines. CONSTITUTION:A facsimile 10 consists of a network controller NCU controlling the connection with a communication line, modulators-demodulators (MODEM) converting a picture signal and a commnication signal, data compressing reproducer DCR reproducing a picture data from a compressed code data, read/write buffer RWB storing temporarily picture data, scanner ISA reading a picture data of an original, plotter REC copying the picture data on a recording paper sheet, and a controller SCU for them. The device 10 is connected with an interface IFP of a personal computer 1 via an interface IFF and a cable CAB. The consists of plural two-way data lines and control lines and the direction of the signal is decided by controlling the gate of the IFP and IFF.

Description

Detailed Description of the Invention ■Technical Field The present invention relates to an image information processing device that is equipped with an image reading device, a recording device 2, a communication device, etc. like a facsimile machine, and is also capable of performing arbitrary image information processing by connecting a personal computer or the like. Regarding.

■Prior Art In recent years, there has been an increasing need for the transmission and editing of image data consisting of two figures, two characters, etc. in various applications.

Conventionally, facsimile machines have been used as devices for transmitting image information. However, this type of device simply reads the document image and sends it to another facsimile machine, and also receives image information sent from another facsimile machine. All I can do is record it.

For example, users who use facsimile want to extract only the necessary area of a document and send it, mask a specific area and send it, or add a specific pattern, text, etc. to the document image and send it. There is a summary. In such cases, the user typically edits the manuscript with glue and scissors, then copies it into a manuscript that can be sent.

In addition, in general, offices and the like must store a large amount of documents, and the storage space for these documents is very large, and it is difficult to search for a portion of the documents and to organize the documents. Nioshira's text? ! If F is recorded as image data on various storage media, the space for document storage will be reduced, and searching and organization can be easily performed on a computer or the like. However, devices that read image data from documents with high accuracy and input it into a computer, or that record image data stored in a computer on high-quality paper, are generally large and very expensive, and moreover, they simply store data. It can only be read or recorded.

With a facsimile, image data can be read with relatively high precision.
Able to record and communicate. Therefore, if it were possible to connect a personal computer or the like to a conventional facsimile machine and exchange image data between the facsimile and the computer, the convenience store side could perform various processing as needed. This can be saved, sent back to facsimile for recording, or transmitted by facsimile to another facsimile machine.

By the way, when connecting a computer or the like to a facsimile machine, the configuration of the interface device is as follows:

First of all, since the image data read from text 1i has a very large amount of data, if the data transmission speed is slow, it will take time to transfer the data between the reading/recording device and the computer. This not only lengthens the processing time, but if the reading/recording device is also used as a facsimile machine on the path ', even if there is a reception request from another facsimile machine, the device is in use and the machine is not transmitting (the machine on the m side is There is no need to wait for a long time.When transferring data at high speed, a parallel data transfer method (for example, the SenI-ronics interface) has conventionally been used.

Secondly, it is desirable to reduce the number of data lines and control signal lines of the interface to reduce the size (light weight) of the connection cable. In other words, the fewer the number of lines, the cheaper the connecting cable itself will be when connecting devices over long distances, and when using facsimile machines, computers, etc. independently or connected to other devices, or when connecting these devices. The connection cable does not get in the way when moving.

In such cases, a serial data transmission method (eg, R8-232C interface) has conventionally been used.

However, the serial data transmission method requires a complex and expensive circuit configuration, and the transmission speed is slow, while the parallel data transmission method requires a large number of data lines and control signal lines.

■Purpose The first object of the present invention is to connect an information processing device such as a personal computer to a facsimile device, to make the interface device and connection cable for the connection inexpensive, and to enable high-speed data transmission through the interface device. The second purpose is to achieve.

■Configuration In order to transmit data at high speed, it is better to use a parallel data transmission method. When connecting an image data reading/recording device such as a facsimile device to an information processing device such as a personal computer, the functions of the interface are as follows:
A function to transmit data from the image data reading/recording device to the information processing device, and a function to read/read image data from the information processing device.
A function for transmitting data to a recording device is required. Therefore, for example, if two sets of Senronics interfaces are used, 16 data lines are required, and at least 6 other control signal lines are required, and the cables that connect them are unnecessarily large and expensive. I end up.

Therefore, when looking at the operation of the interface device in terms of time, there is virtually no case where the operation of inputting data from the outside to the image data reading/recording device and the operation of outputting data from the device to the outside are performed at the same time. Therefore, if the input and output of the data line are shared to form a bidirectional line, the number of lines can be halved. Regarding the control signal line, for example, the data sending signal (SEND) is a signal sent from the transmitting side to the receiving side and is not output from the receiving side.
The data transmission signal line of two devices can be shared on the same line.

When the data line and the control signal line are bidirectional lines as described above, a problem arises in that there is a possibility that both devices may simultaneously output an i signal to one line. To prevent this, one of the devices connected to each other may control the direction of the signal on the signal line. When connecting an image data reading/recording device to a personal computer, etc., if the image data reading/recording device side controls the direction of the signal, the personal computer side will not be able to start data transmission until the signal switching timing arrives. Because you have to create a personal computer processing program according to the timing,
There are significant restrictions on program creation. Therefore, it is preferable to control the direction of the signal on the interface line in response to a signal from an external device (for example, a personal computer) connected to the interface.

The present invention will be described in detail below with reference to one drawing.

Referring to FIG. 1, in this example, a personal computer 1 is connected to a facsimile machine 10 via an interface connection cable CAB. A telephone FTE included in the facsimile machine 10 is connected to a public telephone line.

FIG. 2 shows a schematic configuration of the system shown in FIG. 1 in block form. Referring to FIG. 2, the personal computer 1 includes a central processing bag [CPU, input/output interface IFF, keyboard 7<IE Y].

Display device CRT and external storage device FD1. +21)2
It is.

Functionally, the facsimile device 10 is divided into a network control device (2) that controls connection to a communication line, a modem (modem) that converts image signals (3) and communication signals, and a modem (modem) that compresses and encodes image data. A data compression/reproduction device 9 for reproducing image data from converted data; a read driver 1 to buffer for temporarily storing image data; a scanner for reading the image data of the JM manuscript; a plotter for hard copying the image data onto recording paper; It is equipped to control the equipment. System control unit 1 to SCU control the operation of the entire facsimile machine, and each functional block is connected to system control unit 1 to roll unit SCU via an interface circuit.

Signals from the telephone line are distributed to each modem by the C data switch unit via the network control unit NCU.

The image information of the demodulated signal passes through the data compression/reproduction device DCR and the read/write 1 buffer RWB, and in normal facsimile operation, the write circuit WE is driven and the plotter RF C reproduces and records the image. Further, at the time of transmission, the image signal processed by the video processor VPU is compressed by DCR via the read/write 1-buffer RWB, and enters the modulation/demodulation devices FSK, H3M, and LSM.

A computer interface circuit ml FF is connected to the path line of the system control unit SCU, and a cable CAB connected to this interface circuit is connected to an input/output interface circuit IFP of the personal computer 1.

FIG. 3 shows in detail a part of the computer interface circuit IFF provided on the facsimile side and the input/output interface circuit IFF provided on the personal computer side. Note that among the symbols shown in the drawings, overlined symbols indicate that the signal is valid when the signal level is low level L; however, in the specification, the symbols are underlined instead.

This will be explained with reference to FIG. In this example, the interface cable CAB is composed of 13 wires and a ground line (not shown). The signal lines include 8 data lines for transferring 8-bit parallel data and 5 control signal lines LL, L2 . L3. L4 and L
It consists of 5.

First, referring to the input/output interface circuit, TFP, provided on the personal computer side, there are three control signal lines Ll, L2. L3 and 8 data lines each have a bidirectional gate circuit G with JL three-state output.
A3 and Ga4 are connected.

The control signal line L1 is a unidirectional signal 0NI going from the facsimile 10 side to the personal computer 1 side.
JNE, and the other control signal line L2 is from the personal computer 1 to the facsimile 1.
This is a line that passes one unidirectional signal FAX/input/output toward the 0 side. The remaining control signal line L3. L4 and L5 are bidirectional lines. Control signal line L3
L4 carries either the signal 5END going from the computer 1 side to the facsimile side or the signal 5END going in the opposite direction, and L4 carries the signal lN5TB going from the computer 1 side to the facsimile side and the signal 5END going in the opposite direction. One of the signals TX/RX going from the computer 1 side to the facsimile side and the signal DAN going from the facsimile side to the computer 1 side is carried on L5.

Specifically, when the personal computer outputs a high level H as TX/RX, this signal is sent to buffer BF2.
G7. G
9 and G12 close and G8. GIO and Gll open and go from the computer 1 side to the facsimile side 46
No. 5END, the signal Σ law going from the facsimile side to the computer 1 side, and the signal PE going from the facsimile side to the computer 1 side are now in a state where they can pass through the game hG A 3.

Also, at this time, gate GA4 is connected via inverter INI.
A low level L is applied to the control terminal DIEN of the computer 1, and the setting is made such that 8-bit data from the computer 1 side to the facsimile side can pass through the gate GA4 (transmittable state from the computer 1's perspective).

Further, when the personal computer J outputs a low level L as the signal TX/RX, the gate GA3 is activated by G7 and G9.
and GL2 opens and G8. Glo and Gll are closed, and signal 5 goes from the facsimile side to the computer 1 side.
END, a signal line Σ■ going from the computer 1 side to the facsimile side, and a signal line going from the computer 1 side to the facsimile side (PJ No. U/RX is set in a state where it can pass through gate GA3.

Game 1-GA 4 is in a state where signals from the facsimile side to the computer 1 side can pass (computer 1
The receiver is set to a state in which it can receive data from the side.

In this state, the control signal line -75 is pulled up to the power supply line through the resistor, so if the signal PE is not applied from the facsimile side, it is set to a high level.

Next, reference is made to the computer interface circuit IFF provided on the bus axis side. Similar to the interface circuit IFF, the control signal line L3. L4 and L5 are bidirectional gates with three-state output.
1 is connected, and a bidirectional gate GA2 is connected to the eight data lines.

In addition, an exclusive OR gate EXOR is provided, the control signal line L5 is connected to the input terminal (■), and the baud 1-P4 of the output port ○P1 are connected to the input terminal (■), and the output terminal is connected to the control signal line L5 through the buffer BFI. is connected to the control signal input terminal of GAI1-GAI. When the output level of the buffer BFI is set, the game hGA1 becomes G1. , G3 and G5 close and G2. G4 and G6 are open, and when the BFI output level is [■], G1, G3, and G5 are open, and G2, G4, and G6 are closed. Control signal line L1
, G1-Gl, G4 and G5 are connected to each port PL, P2 . P3 and P4
Connected to the anus, (li!I control signal line U2゜Gate G2
．． The output ends of G3 and G6 are connected to input port 11, respectively.
] 1 each bow hP5. P6. Connected to P7 and P8.

An 8-pin 1-data latch LAI is connected to the data input terminal DI of the gate GA2. ○Data input terminal of P1, data output terminal of IPI, data output terminal Do of G1 to GΔ2, and data latch 1. The data input terminals of AI are connected to an 8-bit data bus {=]0 to D7 connected to system controller 1 to roll unit SCU. The 16-bit address information output from the SCU is applied to the decoder DE+, and two chip select signals C3I and C82- are generated. C8I is applied to output port ○P1 and input port IPI 71
t, cs2 are data latch LAI and NAND game-1-
Applied to NΔ2.

Signals IOW and IOR are control signals generated from the control signals of the microprocessors of the system controller 1 to roll unit SCU, and are low level L when the I10 port is selected and the write strobe pulse and read strobe pulse are issued, respectively. . Therefore, S
When the microprocessor of the CU specifies the boat address to which the C82 is output and writes predetermined data,
The data is latched into the data latch LAI and applied to the gate GA2, and if a low level L is applied to the terminal DIEN, the 8-bit data is output to the connection cable CAB. Further, when reading is performed on that port address, if the terminal DIEN of GA2 is at a high level H, information on the data line of the connection cable is read into the data bus.

Also, when a write operation is performed by specifying an address to baud 1, which is output by C81, the data of the lower 4 bits of the data bus are output from the output port ○P1, and when read with that baud 1 address, Data is input from the input port IPI to each of the third and fourth pins 1- of the data bus.

4a and 4b schematically show the operation of the system control unit SCU of the facsimile 10, FIG. 5 shows the schematic operation of the personal computer 1, and FIG.
An example of signal timing for the ink-face circuit is shown in FIG. 6B and FIG. 6B.

First, the operation of the SCU of the facsimile 10 will be described with reference to FIGS. 4a and 413. After the initial setting is completed, the SCU reads the state of the mode selection switch SW and performs an operation according to the set state. This switch SW
is connected to the operating section PB, as shown in FIG. When the SW is specified to the manual side, the SCU is controlled to operate in the same way as a facsimile (').

If switch SW is specified as 01-, first 0N
Outputs LINE signal. In other words, specify the address to baud 1, where the chip select signal C8I is output, and write 8-bit data with bit O set to o" (=r-). This will cause the interface cable control signal to Line L1 is brought to low level L to cellar1.

Next, the mode signal on the control signal line L2 is checked. This is done by specifying the port address to which the signal C8J is output to chip select 1, reading it, and determining whether the 8-pin 1-data binoto 4 obtained on the data bus is o 1 hp or "o". Let's do it.

In this example, when the control signal is L (="O'"), it is set as facsimile mode 1 to IFAX, and when the control signal is set to I, it is set as input/output mode. Roughly speaking, in this example, the facsimile mode is data transmission between another facsimile machine and a personal computer connected via a telephone line, and the input/output mode is data transmission between the facsimile machine 10 and the personal computer 1. This is data transmission performed in

In the case of input/output mode, the level of the control signal line L5, that is, the signal TX/RX is further checked. When the signal level is ■ (low level L), the roll unit SCU to the system controller 1 sends the scanner Is△ of the facsimile 10.
The mode is set to send the image data read in to the personal computer 1 side.

In this operation mode 1, image data obtained by the scanner ISA is stored line by line in the read/write 1 buffer RWB, and is outputted to the connection cable CAB via the interface circuit IFF. The receiving side (this !0 is a personal computer) indicates that data is being output.
After outputting 8-bit data, a low level signal 5END is sent to the control signal line L3 (this state is maintained) in order to notify the user. Next, the signal level of the control signal line 1.4 is monitored, and it waits for the appearance of a low level signal Σ1 indicating completion of reception from the data receiving side.

When Σ1 appears, the 5END signal is cleared to prepare for the next data transmission. When image data reading and data transmission are completed, control signal line L1 0NLINE
Clear.

The signal level of control signal line L5 is RX (high level H
), the mode is set to record the data sent by the personal computer 1 using the plotter RFC. In this mode, first start the plotter and then
After checking the data end and remaining amount of recording paper, data reception starts. During data reception, the level of the control signal line L3 is monitored, and when the 5END signal arrives, the 8-bit data on the data line is read. The read data is stored in the read/write buffer RWB and 1
When the storage for the line is completed, it is output to the plotter RFC.

Each time data is received, a Σ1 signal is output to the control signal line L4 for confirmation. When the remaining amount of recording paper decreases, a low level signal PE is output to the control signal line L5 to notify this to the receiving side. When the data end is detected, 0NLINE of the control signal line L1 is cleared. In this example, the data end is detected by looking at the time since the previous data was received, and when this time-up exceeds a predetermined time, it is determined that the data end has occurred.

Next, the facsimile mode (see FIG. 4b) will be explained.

Also in this mode, the level of the control signal line L5, that is, the control signal TX/RX is checked first. In this example, when the signal level is 1 input (low level), the mode is set to transmit information sent from another facsimile machine connected through the telephone line to personal computer 1, and when the signal level is RX (high level) If so, a mode is set in which data sent from the personal computer 1 is transmitted to another facsimile machine connected via a telephone line.

First, in the case of RX, clear the signal Suri-1 on the control signal line L1, and then ffi<! for facsimile transmission. ! #f
Start l. This is similar to normal facsimile transmission, and is as follows.

a) Call origination: Call the other party by dialing the telephone. b) Called station confirmation: Sends a 2100Hz 1-tone to notify that the called station is a facsimile terminal.

C) Capability confirmation: Use a 300 bps low speed modem (to the FS) to signal called station capabilities.

d) Command information: Using a low-speed modem, transmission parameters (
(transmission speed of high-speed modem, etc.).

e) l-Learning: Matching the high speed modem to the line, sending a defined data pattern, and checking the data transmission error rate.

f) 1-Reaction after training 8:)-If the data transmission error rate after training is less than a certain value, notify ``Ready to receive'' and proceed to the next step;
"Retraining Request" is returned.

When the preparation for transmission is completed, a signal 0N is sent to the control signal line L1.
Sera LINE, check the data end, and 5
The arrival of the END signal is checked. When the input signal arrives, 8-bit data on the data line is input from the computer interface IFF and stored in the read/write buffer RWB. When the input is completed, ΣΣ is outputted to the control signal line L4. When data storage for one line is completed, data compression processing is started, and after the processing is completed, data transmission (to another facsimile) is started. In this example, data compression processing and data transmission processing are performed by interrupt processing to prevent timing lag, and during data transmission, the control signal 0NLINE of the computer interface IFF is cleared and the computer side Data transmission operations are prohibited.

When the data end is detected and the transmission of all the data stored in the memory is completed, processing is performed to end the facsimile transmission, the signal ONL]iNE is cleared, and the process returns to checking the switch SW.

In the operation mode where the control signal line L5 is at high level 7x,
First, it waits until there is a reception request from the sending facsimile (the other party's station). When there is a reception request, connection processing on the reception side is performed in the same manner as in the preparation for facsimile transmission, and data reception is started. ■ Every time data is received on the line, compressed data playback processing is performed, and when it is completed, the data is output to each 8-bit computer interface IF, F, and at the same time, a signal 5 E N is sent to the control signal line L3.
D is set and waits for the signal HI to appear on the control signal line L4. When the error occurs, the signal 5END is cleared and the process is repeated until all data of one line is transmitted. When reception from the other party's facsimile is completed and all data stored in the memory of the facsimile 10 is transmitted to the personal combination coater 1, facsimile transmission end processing is performed, 0NIJNIE is cleared, and the process returns to checking the switch SW.

Next, the general operation of the personal computer 1 will be explained with reference to FIG. After the initial setting process is completed, the level of the control signal line L1 is checked. If set to 0NLINE, proceed to operation mode specification. That is, after this, the set operation is performed in response to key operations by the operator of the personal computer 1.

In this example, there are four operating modes: a mode in which computer data is recorded by the plotter RFC, a mode in which data read by the scanner ISA is input into the computer, a mode in which computer 1 data is transmitted to another facsimile machine, and another There is a mote that inputs data received from a facsimile into the computer 1. However, in the processing C on the computer I side, there are only two types of other operations except that the signal level output to the control line L2 is different between the input/output mode and the facsimile mode.

In a mode in which data is sent from the computer 1 side to the plotter RFC or other facsimile, the level of the control signal line L5 is first set to RX, and data transmission is started. In the middle of this process, the signal of the control signal line Ll and the PE of the control signal line 5 are checked. 8
5E on control signal line L3 following bit data output.
When the ND signal is sent seven times and 1 μm of the control signal line L4 arrives, the S E N state (clear the i and prepare for the next data transmission. After transmitting all data, the 0NLI
Return to checking the NIE signal.

In the mode in which data is input to the computer 1 from another station's facsimile or scanner IS, first set the control signal line [, 5 to low level) and check the 0NLINE of the control signal line L1. . If this signal is present, wait for the arrival of the 5END signal on the control signal line [,3. When the 5END signal arrives, the 8-bit data on the data line is input, and it is stored in a predetermined address in the memory, and the control signal line L4 does not indicate the completion of reception, and the 1N5I port number is output, and the next Wait for data to arrive. When the 0NLiNH signal disappears, wait until it appears again, proceed to operation mode designation, and repeat these operations.

Therefore, for example, when transmitting data from the computer 1 to the facsimile 10, a signal as shown in FIG. 6a appears on the interface cable CAB'2. In other words, facsimile 10 is 0NLI
When the NE signal is output, the computer 1 outputs predetermined 8-pin 1-data to the data line, and subsequently outputs the 5END signal to the control signal line L3. When the facsimile machine 10 confirms this 5END signal, it takes in the 8bit data on the data line and outputs a 1Σhome signal to notify reception.
(After confirming No. 6, clear the 5END signal and prepare for the next data transmission.

The operation when the remaining amount of recording paper becomes low while the facsimile 10 is receiving data from the computer 1, that is, while recording on the plotter REC-, will be described in detail with reference to FIG. 6b. In this mode, initially, the signal //RX output from the computer 1 is at a high level H, and the G11 and G12 of the G1 and GA3 are open and G12 is closed. Since the control signal line L51 is pulled up to the power supply line with a resistor, it is at a high level. This allows the fax machine to
X OR terminal ■ becomes i-I, and t is terminal ■
is also I (so its output terminal is L and GA1-GA
] is G5. is open.

G6 is quiet. The facsimile 10 normally sets a high level H to baud 1-P4 of output port ○P1, but
When the recording paper runs low, a low level L is output to this P4. This No. 46 is controlled via gate G5 (No. H and In L).
5, and this becomes a signal PE indicating the amount of recording paper remaining. Since the gate Gll is open on the computer 1 side, this signal T'- is transmitted to the computer l. When the computer 1 signal comes, it sends the specified data, then stops data transmission and connects the control signal line L5 to the computer 1.
Set to level. The control signal line L5 is the M fire bell (
L) When the L knee is reached, game 1 on the facsimile side - E
The output level of OR is inverted to H, and the gate GA] is G5.
closes and G6 opens, so TXI/Bell is the input port IP
1 to port P8. By monitoring the level of this port P8, the facsimile 10 knows that the RX mode has been switched to the 7-mode mode.

In the above embodiment, the facsimile mode and the input/output mode are switched using the control signal line, but this mode setting may also be done by sending a predetermined control code to the 8-bit data line. .

In addition, in the embodiment, one control signal line is specially prepared to send a signal indicating whether or not the facsimile IO side is in a state where it can communicate with the computer 1, but this signal 0NLINE and the remaining recording paper It is also possible to put low signal Dandan on the same line. In this way, the control signal lines L1 and L2 of the embodiment are unnecessary, and the number of signal lines can be further reduced. Further, in the embodiment, the confirmation signal Σ1 is used to improve the reliability of signal transmission, but it may be omitted. In that case, on the sending side
It is sufficient to omit the confirmation in step 1 and control the signal to output the 5END signal only for a predetermined period of time. Therefore, the minimum required is:

8 pin bidirectional data lines and two bidirectional control signal lines L3. Only L5.

In the above embodiment, data is transmitted between the facsimile and the computer 1 using the image data ((), but compressed and encoded data may also be transmitted. In addition, although a personal computer was connected to the facsimile machine in the example, a word processor, office computer, intelligent terminal device, etc. with similar functions could be connected to the facsimile machine. I can do it.

■Effects According to the embodiment described above, data transmission is possible between a facsimile machine and a computer, etc. Moreover, the interface circuit is easy to implant, and some of the data lines and control signal lines are bidirectional. , high-speed data transmission can be performed with only a few signal lines.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an image information processing system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the system configuration of FIG. 1. FIG. 3 is a detailed block diagram showing the configuration of part of the computer interface IFF and input/output interface IFP shown in FIG. 2. FIGS. 4a and 4b are a flowchart 1- showing the general operation of the system control unit SCU. FIG. 5 is a flowchart showing the general operation of the personal computer 1. FIGS. 6a and 6b are timing charts 1 to 6 showing examples of signal timing of the interface circuit. l: Personal computer lO: Facsimile ISA: Scanner (image reading device) REC: Pronotator (recording device) NCUe network control device LSM, l-l5M, FSK: Modulation/demodulation device DCR: Data compression/reproduction device IFF: Computer interface (interface) Equipment) SCU System Controller 1-Roll Unisol (t [Slave Control Device) SW: Mode changeover switch FTE: Telephone CAB: Connection cable GAI, GA
2. GA3. GA4: Bidirectional gate circuit RWB: Read/write buffer (memory) DSU: Data switch

Claims (3)

[Claims] (1) An image reading device that scans a document and reads its image to obtain image information; A recording device that records image information on a predetermined recording medium; A network control device that controls incoming and outgoing communications on a communication line; a demodulation device that demodulates a communication signal into image information; a compression device that converts image information into compressed code information; a playback device that restores compressed code information to image information; an electronic control device that controls the various devices; and a plurality of bidirectional data lines and a plurality of bidirectional control signal lines, and a gate circuit that sets the signal sending side and receiving side of the bidirectional data line and bidirectional control signal line, and one bidirectional control signal line. control according to the signal level of
An image information processing device comprising: an interface device that inputs and outputs image information or information obtained by compressing and encoding the image information. (2) The electronic control device performs a specified switch operation and 'C?
/or control to output information input via the interface device to the recording device; information obtained from the image reading device to the interface device; control to output information via the interface device, control to modulate information input via the interface device directly or after compression processing and transmit the modulated information via the network control device, and control to transmit information received via the network control device. Claim (1), wherein at least one of output shift control is performed on the interface device directly after demodulation or after reproduction.
The image information processing device described in . (3) The interface device comprises at least two bidirectional control signal lines, and the front 11il! The electronic control unit is
When the first control signal line is at the reception and instruction level, the second control signal line
The information on the data line is read at a timing corresponding to the input signal of the control signal line, and when the first control signal line is at the transmission instruction level, predetermined data is output to the data line, and the second control signal line is output at a predetermined timing. According to the first aspect of the present invention, when an abnormal state or an interrupt request is detected, the first control signal line is set to transmit and a predetermined level is output to the first control signal line.
) or (2).