JPH06282517A - Display operation part controller - Google Patents

Abstract

PURPOSE:To make it possible to evade the rise of device cost due to the unnecessary high functional operation display device in a peripheral equipment and to surely perform the setting of the operation mode of the peripheral equipment according to using methods by selecting a communication system based on the communication form of a display operation part. CONSTITUTION:When a display operation control part 500 and a low functional operation display device are connected, a TYPE signal is earthed. A multiplexer 503 selects inputs A1 to A4 and selects the signals LED 1 to LED 4 that a CPU 502 outputs. The selected signals LED 1 to LED 4 are transmitted to the low functional operation display device via a connector 501. When the display cooperation control part 500 and a high functional operation display device are connected, the TYPE signal is pulled up by +5V. The multiplexer 503 selects inputs B1 and B2 and selects the transmission data signal TXD and the transmission control signal DTR of the CPU 502.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display / operation unit controller, and more particularly to a display / operation unit controller in a peripheral device of a host computer having an operation display unit.

[0002]

2. Description of the Related Art In a peripheral device used by connecting to a host computer, a setting method for setting an operation mode of the peripheral device includes a method using an operation display device of the peripheral device and a method using an interface from the host computer. .

In the case of the method of using the operation display device of the peripheral equipment, the operation display device is provided with an LCD display section and a plurality of switches, and the operation mode can be set according to the display contents of the LCD display section. There is.

On the other hand, in the method of making settings from the host computer using the interface, when all the settings are made using the interface with the host computer, an operation display device equipped with an LCD display unit and switches is not required. . However, not all the functions of various peripheral devices are necessarily prepared on the interface, so in practice, the interface and operation display device are used together to set various operation modes. A serial interface is used as a display device interface for displaying character information on the LCD display unit so that various types of data can be transmitted with a small number of signal lines.

Further, when the peripheral device is manufactured as a dedicated peripheral device for a specific host computer, since the interface is also made for the specific host computer, all operation modes are prepared on the interface. There are many cases. Therefore, an operation display device equipped with an LCD display unit and a switch, that is, a high-function operation display device is not particularly required, and for example, an LED-only operation display device, that is, a low-function operation display device is used. There is. As an interface for turning on the LED, a signal line corresponding to the LED on a one-to-one basis is used.

[0006]

However, according to such a conventional device, in a peripheral device equipped with a highly functional operation display device, the mode setting of the peripheral device can be performed using the operation display device. Although it is possible and highly versatile,
When a peripheral device mode is set using an interface from a host computer, a high-performance operation display device is not always necessary, but an expensive high-performance operation display device is provided. Therefore, there is a problem that the cost of peripheral equipment becomes high.

In addition, in peripheral equipment equipped with a low-function operation display device, all operating mode settings are often prepared on the interface with the host computer. There was a problem that could not be set.

The present invention has been made in view of the above, and it is possible to avoid an increase in device cost due to an unnecessary high-performance operation display device in a peripheral device that can be used by connecting to a host computer, and The purpose is to ensure that the operating modes of peripheral devices can be set according to the usage method.

[0009]

In order to achieve the above-mentioned object, the present invention provides a display operation section control device for controlling a display operation section of a peripheral device used by connecting to a host computer, in which a plurality of communication methods are used. And a communication means for communicating with the display / operation unit, and a communication mode of the display / operation unit,
The communication means includes a selection means for selecting one communication method from a plurality of communication methods of the communication means, and a connection means for connecting the communication means and the display operation unit, and the communication means, via the connection means,
The present invention provides a display / operation unit controller that communicates in the communication method selected by the selection unit.

It is desirable that the connecting means connects the plurality of communication methods of the communication means with a signal line commonly used.

Further, the connection means has a signal line switching means for switching the connection of the signal line connecting the communication means and the display operation section, and by switching the connection of the signal line, the communication connection by a plurality of communication systems can be performed. It is desirable to be possible.

Further, it is desirable that the selecting means selects one communication system based on the information on the communication form of the display operation unit input from the display operation unit.

In order to achieve the above object, the present invention provides a display operation section control device for controlling a display operation section of a peripheral device used by connecting to a host computer,
A one-chip microcomputer provided with a serial communication line that can also be used as an IO port, and a selection means for selecting whether to use the serial communication line as a serial communication line or as an IO port based on the communication form of the display operation unit. And a display / operation unit control device including the following.

[0014]

The display / operation unit controller of the present invention selects one communication system from a plurality of communication systems based on the communication form of the display / operation unit to communicate with the display / operation unit.

Further, the display / operation unit controller of the present invention connects a plurality of communication systems by a signal line commonly used.

Further, the display / operation unit controller of the present invention enables communication connection by a plurality of communication systems by switching connection of signal lines.

Further, the display / operation unit controller of the present invention selects one communication system based on the information on the communication form of the display / operation unit input from the display / operation unit.

Further, the display / operation unit controller of the present invention uses, as a serial communication line, a serial communication line of a one-chip microcomputer provided with a serial communication line that can also be used as an IO port, based on the communication form of the display / operation unit. Select whether to use or as an IO port.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description with reference to the drawings in the order of [Embodiment 1], [Embodiment 2] and [Embodiment 3], taking as an example the case where the display operation unit control device of the present invention is applied to a scanner. Explained.

[Embodiment 1] FIG. 1 is an explanatory view showing the structure of a scanner 100 to which the display / operation unit controller of the present invention is applied, and has a back surface reading mechanism 101. Scanner 1
00 is a document tray 103 for stacking documents 102
A pickup roller 104 for picking up the originals 102 one by one, a paper feed roller 105 for feeding the originals 102 to a conveyance path, a conveyance roller 106 for conveying the originals 102 on the conveyance path, and the presence or absence of the originals 102. A document absence detection sensor 107 for detecting a jam, a jam detection sensor 108 for detecting the occurrence of a jam, and a document 10
Document edge detection sensor 109 for detecting edge 2
A fluorescent lamp 110 for irradiating the original 102 with light, a ballast 111 for adjusting the output of the fluorescent lamp 110, and a reflection mirror 1 for guiding the reflected light L1 from the original surface in a predetermined direction.
12, a lens 113 for converging the reflected light L1 guided by the reflection mirror 112, and an array of arrays arranged in correspondence with the main scanning direction of the document, and the reflected light L1 converged by the lens 113 has a light intensity. , An image data processing unit for converting an analog signal output from the CCD 114 or a CCD 125, which will be described later, into a multi-valued or binary digital signal. 116, a memory unit 117 for storing the digital signal converted by the image data processing unit 116,
Data compression unit 11 for compressing image data (digital signal) read from the memory unit 117
8, an interface unit 119 for transferring the image data compressed by the data compression unit 118 to a host computer 205 described later, and the back surface reading mechanism 10.
Within 1, the fluorescent lamp 110 to the CCD driver 115
Up to the above, the fluorescent lamp 120, the ballast 121, the reflection mirror 122, the reflection mirror 123, the lens 124, the CCD 125 and the CCD 125, which perform the same operation (the reflected light is L2),
A CD driver 126, an endorser printing unit 127 that prints read confirmation characters on the read original 102, an endorser control unit 128 that controls the endorser printing unit 127, and an original discharge for discharging the read original 102. The tray 129 includes a power supply unit 130 that supplies power, and a control unit 131 that controls each of the above units.

Incidentally, the endorser printing unit 127
Is composed of an inkjet printer head, and is attached so as to be movable in the sub-scanning direction of the original 102.

FIG. 2 is a block diagram showing the configuration of the scanner 100, 201 is an operation display device for displaying the setting contents of the scanner 100, and 202 is the CCD 11 via the CCD driver 115 or the CCD driver 126.
4 or a data selection unit for selecting an analog electric signal output from the CCD 125 and outputting the selected analog electric signal to the image data processing unit 116,
203 is a pickup roller 104 and a paper feed roller 1
The reference numeral 204 designates a pulse motor for controlling forward and reverse rotation control of the transport roller 106 and the transport roller 106, and 204 designates the pickup roller 104, the paper feed roller 105 and the transport roller 1.
The sheet feeding clutch for transmitting the drive to 06 is shown. The operation display device 201 includes a low-function operation display device 201a and a high-function operation display device 201b, which will be described later, and one of them is selected and used according to the usage method. In addition, the control unit 131 performs control suitable for the operation display device 201 (one of the low function operation display device 201a and the high function operation display device 201b) used. Reference numeral 205 denotes a host computer that uses the scanner 100 as a peripheral device.

FIG. 3 is a circuit diagram showing the configuration of the low function operation display device 201a, and a connector 301 for connecting the low function operation display device 201a and the control unit 131.
And LEDs 302a to 302d for displaying the setting state of the scanner 100 by light emission, and LEDs 302a to 3d
Drive element for driving 02d (LS24
4) 303a to 303d. In addition,
The connector 301 has terminals 301a to 301d and a terminal 301e, and each of the terminals 301a to 301d has an L
Instructing to turn on or off the EDs 302a to 302d 4
A book signal, that is, LED1 to LED4 is transmitted. Further, from the terminal 301e, a signal for indicating the type (low function in FIG. 3) of the operation display device 201, that is, TY
The PE is transmitted to the control unit 131. This TYPE
The signal is installed as shown. In addition, R in FIG.
Indicates resistance.

FIG. 4 is a circuit diagram showing the structure of the high-function operation display device 201b, and a connector 401 for connecting the high-function operation display device 201b and the control unit 131.
And switches 402a and 402b for setting the mode of the scanner 100, an LCD 403 for displaying a message when setting the mode, and an LCD 403.
LCD controller 404 for controlling the scanner and the scanner 10
LE for displaying the setting state of 0 by lighting (light emission)
D405a, 405b and drive element (LS244) 406 for driving the LEDs 405a, 405b
a, 406b and the above-mentioned respective parts are controlled, and the control unit 13
CPU that performs serial communication with 1 (1 chip microcomputer)
And 407. The connector 401 has terminals 401a to 401d and a terminal 401e, and the terminals 401a to 401d have a control unit 131.
And four signals for full-duplex serial communication,
That is, TXD, RXD, DTR, DSR are transmitted. Where TXD and RXD represent data signals,
DTR and DSR represent control signals. Also, T
XD and DTR are transmission signals, RXD and DS
R is a received signal. Further, a signal for indicating the type (high function in FIG. 4) of the operation display device 201, that is, TYPE, is transmitted from the terminal 401e to the control unit 131. This TYPE signal is pulled up to + 5V as shown. In addition, R in FIG. 4 has shown resistance.

FIG. 5 is a circuit diagram showing the configuration of the display operation control unit 500 of the first embodiment which is incorporated in the control unit 131 and controls the operation display device 201. The control unit 131 (display operation control unit 500) is shown in FIG. Operation display device 201
A connector 501 for connecting to and
One of the CPU (one-chip microcomputer) 502 that outputs a signal that controls 01 and the signal that controls the low-function operation display device 201a or the signal that controls the high-function operation display device 201b from the outputs of the CPU 502 is selected. And a multiplexer 503 that operates. The connector 501 includes terminals 501a to 501d and a terminal 50.
1e, and from the terminals 501a to 501d, the above-mentioned four signals of LED1 to LED4 or TXD, RX.
Operation display device 201 out of 4 signals of D, DTR and DSR
A signal suitable for is transmitted. The four signals of TXD, RXD, DTR, DSR transmitted to the connector 501 are
This is the name of the operation display device 201 side, and the operation display device 20
The signals on the 1st side and the display operation control section 500 side are RXD and T
XD, DTR and DSR correspond to each other.

The operation of the above configuration will be described.
First, the case where the control unit 131 (display operation control unit 500) and the low function operation display device 201a are connected will be described. The TYPE signal is grounded to the low function operation display device 201a, and this TYPE signal is input to the CPU 502. When the TYPE signal is grounded, the CPU 502 performs control according to the type of the operation display device 201, that is,
LEDs 302a to 302 of the low function operation display device 201a
Control for instructing to turn on or turn off d (LED1
~ Output four signals of LED4). The TYPE signal is also input to the multiplexer 503, and the multiplexer 503
Selects inputs A1 to A4 when the TYPE signal is grounded, that is, LED1 output by CPU 502
~ 4 signals of LED4 are selected. Selected LED1 ~
The four signals of the LED 4 are transmitted to the low function operation display device 201a via the connector 501. In the low function operation display device 201a, LEDs 1 to LE are connected via the connector 301.
When the four signals D4 are transmitted, the LEDs 302a to 302d are turned on or off in accordance with the signals from the LEDs 1 to LED4.

Next, a case where the control unit 131 (display operation control section 500) and the high function operation display device 201b are connected will be described. The high-performance operation display device 201b is TYP
The E signal is pulled up to + 5V.
The signal is input to the CPU 502. CPU502 is TY
When the PE signal is pulled up to + 5V, control according to the type of the operation display device 201, that is, TXD, RX
Serial communication with the high function operation display device 201b is performed using four signals of D, DTR and DSR. The TYPE signal is also input to the multiplexer 503, and the multiplexer 5
03 selects input B1, B2 when the TYPE signal is pulled up to + 5V, that is, CPU50
2 transmission data signal (TXD) and transmission control signal (DT
R) is selected. Transmission data signal (TX
D) is a received data signal (R
XD) is input to the high-performance operation display device 201b,
The transmission control signal (DTR) is used for the high-performance operation display device 201.
It is input to b as a reception control signal (DSR). Also,
A transmission data signal (TXD) on the high-performance operation display device 201b side input via the connector 501 is input to the CPU 502 as reception data (RXD), and a transmission control signal (DTR) is received as a reception control signal (DSR). CPU
502 is input.

The high-performance operation display device 201b has a TXD,
LCD4 using 4 signals of RXD, DTR, DSR
03 while confirming the display of 03, switch 402a, 402
The scanner 100 is set by operating b. In addition, C
The PU 407 responds to the LED 405a, the LED 405a,
Control for instructing to turn on or off 405b and display on LCD 403 is performed.

Next, mounting of the operation display device 201 will be described. The operation display device 201, as shown in FIG.
It is attached to the main body of the scanner 100 via the connector. It can be easily attached and detached by inserting and removing the connector. In addition, the low-function operation display device 201a and the high-function operation display device 201b have the same shape including the shape of the connector, and can be arbitrarily replaced and used.

As described above, by attaching and using the low-function operation display device 201a or the high-function operation display device 201b as needed, it is possible to provide the peripheral equipment suitable for the purpose of the user in any usage method. You can
For example, when the scanner 100 equipped with the low function operation display device 201a is purchased and used as a dedicated peripheral device of a specific host computer 205, and it becomes necessary to use it as a peripheral device of various host computers 205, By purchasing the high-function operation display device 201b and replacing it with the low-function operation display device 201a,
It is possible to avoid purchasing an expensive scanner 100 even though it is not necessary.

As described above, according to the first embodiment, since the low function operation display device or the high function operation display device can be selected and used as needed, the operation display device 201 that matches the usage of the peripheral device can be provided. Can be provided. Therefore, it is not necessary to purchase an expensive operation display device even though it is not used. It also means that you don't have to include a feature that you want to use.

Further, since the low function operation display device 201a and the high function operation display device 201b can be controlled by the common signal line, the LCD, a large number of switches and LEDs can be controlled. Further, since it is not necessary to operate a special switch to identify the communication form of the operation display device 201, the operation display device 201 can be easily replaced, and the operability is improved.

[Second Embodiment] In the second embodiment, the configuration of the display operation control unit 500 of the first embodiment is replaced, and other configurations and operations are the same as those of the first embodiment, and the description thereof will be omitted. Only the parts different from the first embodiment will be described.

FIG. 7 is a circuit diagram showing the configuration of the display operation control unit 700 of the second embodiment which is incorporated in the control unit 131 and controls the operation display device 201. The control unit 131 (display operation control unit 700) is shown in FIG. Operation display device 201
A connector 701 for connecting to and the operation display device 2
And a CPU (one-chip microcomputer) 702 that outputs a signal for controlling 01. The CPU 702
Is equipped with a serial communication line that can also be used as an IO port. The connector 701 has terminals 701a to 701d and a terminal 701e. From the terminals 701a to 701d, the low function operation display device 201 is provided.
4 signals of LED1 to LED4 for controlling a or 4 signals of TXD, RXD, DTR and DSR for performing serial communication with the high function operation display device 201b are transmitted.

The operation of the above configuration will be described.
First, the CPU 702 inputs the TYPE signal at the input port, and when the TYPE signal is at the ground level (when the low function operation display device 201a is connected to the control unit 131), four signals for directly controlling the LEDs are provided. Line (LED
The connection line is switched to the output port so that 1 to 4) are selected, and the low function operation display device 201a is controlled via the connector 701 as in the first embodiment.

On the other hand, when the TYPE signal is at + 5V level (when the high function operation display device 201b is connected to the control unit 131), the CPU 702 sets the register in the microcomputer so that the connection line controls serial communication. Rewriting is performed and serial communication is performed with the high function operation display device 201b via the connector 701 as in the first embodiment.

As described above, according to the second embodiment, the low function operation display device 201a or the high function operation display device 201b can be selected and used as needed, and therefore the same effect as that of the first embodiment can be obtained. You can Further, since a microcomputer that can be used as serial communication or an IO port is used, a selection circuit is not required, and the same effect as that of the first embodiment can be obtained at low cost.

[Third Embodiment] In the third embodiment, the configuration of the display operation control unit 500 of the first embodiment is replaced, and other configurations and operations are the same as those of the first embodiment, and the description thereof will be omitted. Only the parts different from the first embodiment will be described.

FIG. 8 is a circuit diagram showing the configuration of the display operation control unit 800 of the third embodiment which is incorporated in the control unit 131 and controls the operation display device 201. A connector 801 for connecting the low function operation display device 201a, a connector 802 for connecting the control unit 131 (display operation control unit 800) and the high function operation display device 201b,
CPU that outputs a signal for controlling the operation display device 201
(1 chip microcomputer) 803. The connector 801 has terminals 801a to 801d, and four signals of LED1 to LED4 for controlling the low function operation display device 201a are transmitted from the terminals 801a to 801d. Further, the connector 802 has a terminal 802.
a to 802d, and from the terminals 802a to 802d,
Four signals of TXD, RXD, DTR and DSR for performing serial communication with the high function operation display device 201b are transmitted.

FIG. 9 is an explanatory view showing the structure of the storage portion of the control unit 131 for storing the operation display device 201 in the third embodiment. As shown in the drawing, the storage portion is for the low-function operation display device 201a. A connector 801 and a connector 802 for the high function operation display device 201b are prepared.

The operation of the above configuration will be described.
When the low function operation display device 201a is connected to the control unit 131 (display operation control unit 800), four signal lines LED1 to LED4 for instructing turning on or off of the LEDs 302a to 302d of the low function operation display device 201a.
Is output and the low function operation display device 201a is controlled via the connector 801 as in the first embodiment.

On the other hand, when the high-performance operation display device 201b is connected to the control unit 131 (display operation control section 800), the CPU 803, via the connector 802,
4 of TXD, RXD, DTR and DSR as in the first embodiment
The signal is used to perform serial communication with the high function operation display device 201b.

As described above, according to the third embodiment, the low function operation display device 201a or the high function operation display device 201b can be selected and used according to need, and therefore the same effect as that of the first embodiment can be obtained. You can

[0044]

As is apparent from the above, according to the display / operation unit control device of the present invention, a plurality of display / operation unit control devices for controlling the display / operation unit of the peripheral device used by connecting to the host computer are provided. A communication unit having a communication system for communicating with the display operation unit; a selection unit selecting one communication system from a plurality of communication systems of the communication unit based on the communication form of the display operation unit; and a communication unit And a display operation unit are connected to each other, and the communication means communicates via the connection means with the communication method selected by the selection means.
It is possible to avoid an increase in device cost due to an unnecessary high-performance operation display device in a peripheral device that can be connected to a host computer, and to set the operating mode of the peripheral device according to the usage method. Can be done.

Further, according to the display operation unit control device of the present invention, in the display operation unit control device for controlling the display operation unit of the peripheral device used by connecting to the host computer,
A one-chip microcomputer provided with a serial communication line that can also be used as an IO port, and a selection means for selecting whether to use the serial communication line as a serial communication line or as an IO port based on the communication form of the display operation unit. Since it is equipped with, it is possible to avoid an increase in device cost due to an unnecessary high-performance operation display device in a peripheral device that can be used by connecting to a host computer, and to operate the peripheral device in accordance with the usage method. The setting of can be surely performed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a structure of a scanner to which a display operation unit control device of the present invention is applied.

FIG. 2 is a block diagram showing a configuration of a scanner.

FIG. 3 is a circuit diagram showing a configuration of a low function operation display device.

FIG. 4 is a circuit diagram showing a configuration of a high function operation display device.

FIG. 5 is a circuit diagram showing a configuration of a display operation control unit according to the first embodiment.

FIG. 6 is an explanatory diagram showing a method of mounting the operation display device in the scanner.

FIG. 7 is a circuit diagram showing a configuration of a display operation control unit according to a second embodiment.

FIG. 8 is a circuit diagram showing a configuration of a display operation control unit according to a third embodiment.

FIG. 9 is an explanatory diagram showing a structure of a storage unit of a control unit that stores an operation display device according to a third embodiment.

[Explanation of symbols]

131 control unit 201 operation display device 201a low function operation display device 201b high function operation display device 301 connector 401 connector 501 connector 502 CPU 503 multiplexer 701 connector 702 CPU 801 connector 802 connector

Claims (5)

[Claims] 1. A display / operation unit controller for controlling a display / operation unit of a peripheral device which is connected to a host computer and has a plurality of communication methods, and communication means for communicating with the display / operation unit; A selection means for selecting one communication method from a plurality of communication methods of the communication means based on a communication mode of the display operation section; and a connection means for connecting the communication means and the display operation section, The display / operation unit control device, wherein the communication means communicates via the connection means with the communication method selected by the selection means. 2. The display operation unit control device according to claim 1, wherein the connection unit connects a plurality of communication systems of the communication unit by a signal line commonly used. 3. The connection means has a signal line switching means for switching connection of a signal line connecting the communication means and the display operation section, and the plurality of communication methods are provided by switching connection of the signal line. The display / operation unit control device according to claim 2, wherein the communication connection is enabled by. 4. The method according to claim 1, wherein the selecting means selects one communication system based on the information on the communication form of the display operation unit input from the display operation unit. Display operation unit control device. 5. A display / operation unit controller for controlling a display / operation unit of a peripheral device used by connecting to a host computer, and a 1-chip microcomputer provided with a serial communication line that can also be used as an IO port; A display / operation unit control device comprising: a selection unit for selecting whether to use the serial communication line as a serial communication line or as an IO port based on a communication form of the operation unit.