JPS6225312B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal operation panel equipped with a non-locking operation switch used in facsimile terminals and the like.

Unlike locking type operation switches, non-lock type operation switches do not have a function to maintain the selected state within the switch itself and only generate a pulse each time the switch is pressed once. Number of switch presses received: 0, 1, 2
Depending on ..., the switch selection status is A, B, C...
Decide as follows. For this reason, a lock type switch can take only two states, on and off, or generally speaking, A and B, but a non-lock type operation switch can arbitrarily select many states with one switch. On the other hand, in the non-lock type, when the power to the device is turned off, the selected state of the switch also disappears, and when the power is turned on again, the selected state of the switch is basically undefined. Therefore, in the non-lock type, a circuit is usually provided to set a predetermined selection state (hereinafter referred to as the home position) when the power is turned on. The above-mentioned home position of a terminal operation panel equipped with such a non-locking operation switch is usually fixedly set by the manufacturer, which may be inconvenient for the user.
In other words, it is preferable that the home position be selected in the frequently used switch selection state, but if the home position estimated and set by the manufacturer does not match the user's desired home position, that is, the frequently used selected position, This is because the user is forced to operate the switch each time the power is turned on to set the switch position to the desired position. This problem can be solved by making the switch on the terminal operation panel a lock type, but since the number of switches required is the same as the switch selection position, it is expensive, has poor operability, and has design problems. A new drawback arises.

The present invention solves the above-mentioned problems all at once, and has a plurality of states including a home position, takes the home position when the power is turned on, and
In a terminal operation panel equipped with a non-lock operation switch that sequentially changes to the next state each time the switch is pressed, a home position function that outputs an arbitrarily selected one of the plurality of states as home position information. The device is characterized by comprising a setting switch and a control means that takes in home position information output by the setting switch when the power is turned on and causes the non-lock operation switch to take a state specified by the home position information. but,
This will be explained in detail below with reference to the illustrated embodiments.

FIG. 1 shows the basic configuration of the present invention. In the figure, reference numeral 1 denotes a reset signal generation circuit for detecting power-on, and when the power is turned on, an initial reset signal RST is input from the reset signal generation circuit 1 to the switch information input/output control circuit 2. Using this signal RST, the input/output control circuit 2 loads the home position information HP from the home position setting switch 3, and operates the information DR for driving the light emitting diode (LED) indicating the switch selection state on the operation panel 4. The information HP is sent to the panel 4 and also to the central processing unit 5,
Complete home position setting. A semi-fixed switch attached to the back of the device or the like is sufficient as the home position setting switch, and is set to an appropriate position (state) according to each user's wishes.

For example, if the operation panel 4 is that of a facsimile machine, the switch selection state has four modes: ALDC, clear, normal, and halftone, as shown in FIG. is the home position. Naoko here
ALDC, also known as auto, is a mode in which fine image (character) parts of a document are read by increasing the number of scanning lines, and coarse parts are being read by decreasing the number of scanning lines. "Vivid" refers to a mode in which the entire document is precisely read with a large number of scanning lines, such as 8 lines/mm, and therefore, although the resolution is high, both scanning and transmission times are long. "Halftone" is used when sending originals with light and dark tones, such as originals printed by a line printer, and refers to a mode in which the threshold value for black and white determination is lowered to the white side, so that even pale blacks are read as dark blacks. 6 is a non-locking operation switch that selects these modes, and each time you press it, it changes from "ALDC" → "Clear" → "Normal" →
They are selected cyclically in the order of "halftone" → "ALDC" → . . . (assuming that the home position is set to ALDC), and the LED 7 at the selected location lights up to display the mode. Previously, one of these states, for example "ALDC", was fixed as the home position, so if you wanted to operate in the "clear" mode, for example, you had to press switch 6 once after turning on the power. Yes (set the home position to "Normal")
(If you select ``Vivid'', you need to press it three times), which can be extremely troublesome for users who frequently use ``Vivid''. In such a case, the present invention makes it possible to set the switch 3 so that "clear" becomes the home position.

Next, each time the switch 6 on the operation panel 4 is pressed, the switch press signal SW enters the input/output control circuit 2 and is added, and the addition result indicating the switch selection position status becomes the LED drive signal DR. The LED 7 is turned on and the signal is input to the central processing unit 5. The central processing unit 5 receives operation start information (for example, "send", "receive", "copy") from the input/output control circuit 2.
When receiving the operation start information output by pressing a switch such as
Starts operation in the mode specified by the number of SWs. After the operation is completed, a processing end signal END is given to the control circuit 2, and the circuit 2 is reset. In this case, if the central processing unit 5 operates without the operation switch 6 being pressed after the power is turned on, the operation was performed at the home position, so the state will remain unchanged even if the operation switch 6 is reset. If you press the button several times to operate in a mode other than the home position, turn the operation switch 6 on the signal END.
The selected state and the lighting state of LED 7 are automatically returned to the home position. This is because a user who is accustomed to using this device may misunderstand the switch position selected by the previous user as the home position without carefully checking the switch position.
This is effective in preventing erroneous operations that result in expecting processing in the home position mode.

FIGS. 3 to 5 show different embodiments of the present invention that further embody the structure shown in FIG. 1. In the example shown in FIG. 3, the control circuit 2 and central processing unit 5 shown in FIG. 1 are implemented by a microprocessor unit (MPU) 8. Upon receiving the initial reset signal RST, the MPU 8 reads the home position information HP from the home position setting switch 3, and outputs the home position information HP from the operation panel 4.
Write the LED drive information DR to. The MPU 8 scans the output of the switch 6 of the operation panel 4 at an appropriate period, and when it detects a switch press signal SW, sends a signal DR to the operation panel 4 to update the status, and lights up the corresponding LED 7. Repeat this below. When the MPU 8 receives the above-mentioned operation start information from the operation panel 4, it starts its operation. When the predetermined operation is completed, the MPU 8 reads the information HP again from the home position setting switch 3 and returns the status display of the switch 6 to the home position.

4 and 5 show examples in which processing is performed by hardware; FIG. 4 shows a preset method, and FIG. 5 shows a selector switching method. In the example of FIG. 4, a counter 9 is used, and this counter is an n-ary counter that returns to the initial 1 after counting the number of switch states n.
In the case of the above-mentioned halftones, a switch is provided to change the threshold value, and when the original is of normal darkness, the switch is turned off, and when the original is light, the switch is turned on to lower the threshold value. Since such a non-lock operation switch has two states, on and off, when applied to such a switch, the counter 9 may naturally be a 1-bit flip-flop. NOR gate 10 receives a power-on signal PS or an end signal END from central processing unit 5, and generates a preset signal PRE for counter 9. Therefore, when the power is turned on, the information HP of the home position setting switch 3 is preset in the counter 9. This sets the home position, and each time the switch 6 on the operation panel 4 is pressed, the counter 9 counts up and updates the switch status. Thereafter, the counter 9 is again preset with the signal HP from the home position setting switch 3 at the operation end signal END, and the LED 7 of the operation panel 4 is returned to the home position state. The output of the counter 9 is a value obtained by adding the number of presses of the switch 6 to the preset information HP as the expiry value, and it can be decoded by using the operation panel 4.
and the central processing unit 5.

FIG. 5 shows an example using the selector 11. The selector 11 has two inputs depending on the level of the select signal SE which is the output of the JK flip-flop 12.
Select either HP or SW. In other words, when either the power-on signal PS or the termination signal END passes through the OR circuit 13, the flip-flop 12
The output SE becomes “L” level and selector 1
1 selects the input HP, and the home position set by the home position setting switch 3 is output to the operation panel and central processing unit. Each time the switch 6 on the operation panel 4 is pressed, the signal SW is input to the counter 14, and at the same time the signal SW is input to the counter 14.
SW passes through OR circuit 15 to flip-flop 1
2 reset signal RST, its output
SE becomes H level and the selector 11 selects the output SW of the counter 14.

As described above, according to the present invention, the home position of the non-locking operation switch can be set or changed as desired by the user using the setting switch. The home position can be set to a high state, and therefore, the number of switch operations when the power is turned on can be reduced. Further, after a predetermined operation is completed, the device can be automatically returned to the home position without waiting for the power to be turned off, and in this case, there will be no malfunction caused by forgetting to return to the mode, thereby further improving operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of the present invention.
FIG. 2 is a front view showing an example of a non-lock type operation switch provided on an operation panel, and FIGS. 3 to 5 are block diagrams showing different embodiments of the present invention that embody the structure shown in FIG. In the figure, 3 is the home position setting switch;
4 is a terminal operation panel, and 6 is a non-lock type operation switch.

Claims (1)

[Claims] 1. Having a plurality of states including a home position,
In a terminal operation panel equipped with a non-lock operation switch that assumes the home position when the power is turned on and then sequentially changes to the next state each time the switch is pressed, one of the plurality of states is arbitrarily selected. A home position setting switch outputs as home position information; and the home position information outputted by the setting switch when the power is turned on is taken in, and the non-lock operation switch is set to a state specified by the home position information. A terminal operation panel characterized by comprising a control means for controlling the 2. The control means receives the output of the home position setting switch even when the operation specified by the state of the non-locking operation switch is completed, and sets the state of the non-locking operation switch to the home position specified by the home position information. 2. The terminal operation panel according to claim 1, wherein the terminal operation panel is returned to the original state.