JPH0112313Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of a multi-display device equipped with multiple sets of display devices such as a multi-faceted reversing display.When each display device is arranged in a matrix, one This allows a control circuit to control multiple display devices.

FIG. 1 is a control circuit diagram of a set of conventional display devices.
It is the same as that described in 54024 (Special Publication No. 54-22077).

PM is a pulse motor, and this pulse motor drives a reversing display (not shown) to select the designated display surface.

A 100V AC power supply (50 or 60Hz) is connected to the pulse motor PM.
A thyristor SCR is connected in series with the power supply. Therefore, while a positive input is applied to the gate of the thyristor SCR, a half-wave rectified pulse signal is applied to the pulse motor PM, and the rotor advances by a constant angle. As a result, display conversion is performed on the display section of the reversible display.

To detect the display position of the display, the display is equipped with position detection wipers W ₁ and W ₁₀ and 15 bank contacts.
A position detector consisting of b ₀ -b ₉ and b ₁₀ -b ₁₄ is provided. The bank contacts b ₀ to b ₉ of the 1st digit are connected to the information lines ₀ to ₉ that transmit the display information of the 1st digit, and the bank contacts b _{10 to b 14 of the 10th digit are connected to the information lines b 10} to b ₁₄ of the 10th digit. They are respectively connected to information lines ₁₀ to ₁₄ that transmit display information. Also each information line ₀ to ₉ and ₁₀
~ ₁₄ is a push button switch which is one of the display information sources.
Connected to _S0 to _S9 and _S10 to _S14 .

For example, if you want to display the 33rd display screen out of 50 on the display, close switches S ₂ and S ₁₃ and connect bank terminals t ₂ and t ₁₃ to ground voltage via information lines ₂ and ₁₃ . Connect. Motor through control unit
Each time PM is driven and a display conversion is performed, wiper W ₁ advances one step and moves to the next bank contact, and when returning from bank contact b ₉ to b ₀ , wiper W ₁₀ advances one step and moves to the next bank contact. Move to bank contacts. The display conversion of the display unit is performed until the wipers W ₁ and W ₁₀ reach the bank contacts b ₂ and b ₁₃ , respectively, which are connected to the ground in advance.

The wipers W ₁ and W ₁₀ are connected to the anodes of diodes D ₁ and D ₂ via detection lines L ₁ and L ₁₀ , respectively, and the cathodes of the diodes D ₁ and D ₂ are connected at a point A.
It is connected to the read confirmation signal terminal R/A via a diode D ₃ in the same direction and a control line L ₃ . Diodes D ₁ and D ₂ constitute an AND circuit, and the wiper
If W ₁ and W ₁₀ are not connected to the ground at the same time, a bias voltage of +12V appears at point A, and the wiper
Zero potential (earth) appears when W ₁ and W ₁₀ are connected to earth at the same time. This signal is a display confirmation signal
Used as ACPT.

On the other hand, the point A is connected to the base of the transistor _Q1 , the collector of this transistor _Q1 is connected to the +12V power supply via the diode _D4 and the resistor, and the emitter is grounded via the resistor. Connected to the control gate of the thyristor. The anode of diode _D5 is connected between the anode of diode _D4 and the resistor.
The cathode of the diode _D5 is connected to the display command terminal W through a control line _L2 .

wiper W ₁ for the ground data from the information source,
If at least one of W ₁₀ is not connected to the ground, the potential at point A will be +12V and transistor Q ₁
The base potential of becomes positive potential, but if there is no display command, the contact WRITE is closed, so the collector potential of transistor Q ₁ becomes negative via diode D ₅ and does not become conductive. If a display command is given here and the contact WRITE is opened, the transistor
_Q1 becomes conductive, a positive potential is applied to the gate of thyristor SCR, and pulse motor PM starts rotating. This causes the display to operate and display conversion is performed. This operation is performed by the wiper as the display transforms.
W ₁ and W ₁₀ step forward, wiper W ₁ simultaneously contacts bank contact b ₂ connected to the ground, wiper W ₁₀ simultaneously contacts bank contact b ₁₃ , and the potential at point A increases.
This is done until the voltage reaches 0V (earth air). When the display corresponding to the display information is completed, it is confirmed via the diode D ₃ and the confirmation contact ACPT. On the other hand, in order to read out the display state, a read contact READ is provided for the control line _L3 , and can be used by switching with the confirmation contact ACPT. wiper
When both W ₁ and W ₁₀ reach a predetermined bank contact, for example, wiper W ₁ reaches bank contact b ₂ and wiper W ₁₀ reaches bank contact b ₁₃ , point A becomes zero potential and transistor Q ₁ is turned off. Stop pulse motor PM. Contact WRITE is then opened,
In conjunction with this contact WRITE, all the switches S ₀ to _{S 14} are set to the return state, that is, the open state, and the detection lines L ₁ and L ₁₀ become +12V. Contact ACPT
When set to the RERD side, the control line _L3 becomes zero potential,
Only the information line ₂ corresponding to the bank contact b ₂ where the wiper W ₁ is stopped and the information line ₁₃ corresponding to the bank contact b ₁₃ where the wiper W ₁₀ is stopped are set to zero potential, and the displayed information is It will be read out on the line.

FIG. 2 shows an example in which the conventional display devices described above are arranged in a matrix to form a multi-display device.
In this figure, display devices No. 11, No. 12...No.
110 are arranged horizontally to display the first row as a whole, and No. 21, No. 22, . . . No. 210 perform the second row display. The information lines are vertical (also called "line direction"). For example, No. 11 and No. 21 information lines DB ₁₁ ,
DB ₂₁ is commonly connected. One side display control line
LW ₁ is commonly connected to each display device No. 11 to No. 110 in the first stage, and the display confirmation/read control line LRA ₁ is also commonly connected to display devices No. 11 to No. 110 in the first stage. It is connected. Similarly, for the second row, display control line
LW ₂ and display confirmation/read control line LRA ₂ are commonly connected.

However, in this multi-display device, not only the display device but also the control circuit, which is made up of a hybrid IC incorporating diodes, transistors, thyristor SCRs, etc. necessary to turn on and off the pulse motor PM, are installed in each display device No. 11. ~Preparing for No.210.

The present invention further improves the multi-display device in which multiple display devices are commonly controlled, and each display device is equipped with only the essential parts such as the display section, and the parts that can be shared are As far as possible, the purpose is to simplify the system configuration and reduce costs by making it common for a plurality of display devices. To achieve this purpose, this invention
A multi-display device consisting of a plurality of stages of display devices, including a plurality of sets of display devices in the line direction each including a display section, a drive source for driving the display section, a step signal receiving means, and a control means for the drive source. , a stage selector which is independently connected for each stage to an information line that transmits display information to the display section of the display device in each stage, and to a stage signal receiving means and a drive source control means of the display device in each stage. and a line control circuit commonly connected to the display devices at each stage in the line, the line control circuit having a write instruction means and a line control circuit commonly connected to the drive source control means at each stage. , a display confirmation means that is commonly connected to the detection line of the display position detection means of the display section of each stage and detects and confirms that the display section has displayed the instructed information, and the display confirmation means The present invention employs a configuration including a control circuit that issues a stop signal to the drive source control means at each stage when the display is confirmed by the above-described method.

Next, an embodiment of the multi-display device according to the present invention will be described in detail with reference to the drawings. FIG. 3 is a circuit diagram showing an embodiment of a multi-display device according to the present invention.
In this figure, display devices No. 11...No. m1 are arranged in the line direction, and n sets of similar lines are arranged. Each line is display device No.11~No.m1, No.1n
As shown by ~No. mn, display devices of 1 to m stages are provided, and are arranged in a matrix as a whole. CC is a stage selection circuit, and by closing any of its contacts _g1 ... _gn , you can select which stage of display device to operate.The contact _g1 is the display device number of the first stage. 11 to No.1n, and the contact g _n is commonly connected to m-th display devices No.m1 to No.mn. LC is a line control circuit,
Each line is provided with line control circuits LC ₁ to LC _o , and by opening one of the respective write contacts WS _{1 .} . . WS _o , it is possible to select which line's display device is to be operated. That is, line control circuit
LC ₁ is commonly connected to display devices No. 11 to No. m1 in the line, and line control circuit L _O is commonly connected to display devices No. 1 n to No. mn in the line. Therefore, for example, the m-th stage contact of the stage selection circuit CC
By opening g _n and the write contact WS _o of the line control circuit L _o of the n-th line, a desired display device No. mn can be selected and displayed.

Since the configuration within the line is the same for all lines, the mutual relationship between the display devices No. 11...No. m1 of the first line and the line selection circuit LC ₁ will be explained. The position detection wiper W ₁₁ ...W _n1 of each stage is connected to the diode D of the line control circuit LC 1 via the detection line L ₁₁ ...L _n1 and the contact g ₁₁ ... _{g n1 of} the stage signal receiving relay G ₁₁ ...G _n1 . ₁₁ ,
Connected to the anode of D ₁₂ . The cathodes of these diodes D ₁₁ and D ₁₂ are connected at _one point A, and the first
It is connected to the base of the transistor _Tr11 , and is also connected to the read confirmation signal terminal R/A via a diode _D13 .

If the position detection wiper W ₁₁ ...W _n1 is not connected to the ground, apply bias voltage +12V to point _A.
appears, and when any of the wipers _W11 ... _Wn1 is connected to the ground, zero potential appears. On the other hand, the collector of the first transistor Tr ₁₁ is connected to the +12V power supply via the diode D ₁₄ and the resistor, and at the same time to the -4V supply via the diode D ₁₅ and the write contact WS ₁ .
Connected to power. The emitter is connected to the base of the second transistor _Tr12 . Further, the emitter of the second transistor Tr ₁₂ is grounded together with the emitter of the first transistor Tr ₁₁ , and the collector is connected to the +12V power supply via the diode D ₁₆ and connected to the pulse motor drive relay.
_M11 ...Commonly connected to _Mn1 .

Each of the display devices No. 11 to No. mn includes wipers W ₁₁ to W _no and pulse motors PM ₁₁ to PM _no for driving the display portion, similarly to the display portion of FIG. 1. However, the control circuit is line control circuit LC ₁ for each line.
~LC _o is shared, and stage signal reception relays G ₁₁ ~G _no and motor control relays M ₁₁ ~M _no are provided independently. 1st stage signal receiving relay G _{11
.about.G1o} are commonly connected to the first stage selection contact _g1 , and the _second to mth stages also have the same configuration. And each stage signal receiving relay G ₁₁ ~
G _no contact point g ₁₁ ~ g _no is the wiper detection line L ₁₁ ~ Lmn
It is connected to the. Therefore, for example, when the first stage contact g ₁ is closed, the first stage signal receiving relays G ₁₁ to _{G 1o} operate simultaneously to close the contacts g ₁₁ to _{g 1o} , and the first stage Only the detection lines L ₁₁ to L _1o of the display device are connected to the diodes D ₁₁ , D ₁₂ to _{D o1} , and D _o2 of the corresponding line control circuits LC ₁ to L _O . motor
Each motor control relay M11 to Mno, which has contacts _{m11 to mno} in the power supply circuit of PM11 _{to PMno} , _also has contacts _g1 to _gn for stage selection corresponding to each stage _in common. connected and the other end is the line control circuit in the same line
It is commonly connected to the collectors of the second transistors Tr ₁₂ -Tr _o2 of LC ₁ -LC _o . Therefore, even if the first stage contact _g1 closes and the first stage display devices No. 11 to No. 1n are selected all at once, on the line control circuit LC side, for example, the first line write contact WS If only motor PM ₁ is operated, only motor PM ₁₁ of display device No. 11 on the first line is driven, and the display of the other display devices is not changed.

Next, the display changing operation will be explained. First, one of the contacts _g1 ... _gn is closed by the stage selection circuit CC,
Select which stage of display device to operate. For example, when contact g ₁ is closed, contacts g ₁₁ to _{g 1o} of the first stage reception relay are closed all at once. Next, if none of the wipers W ₁₁ ...W _n1 is grounded to the ground with respect to the ground data from the information source, the potential at points A ₁ to A _o becomes +12V, and the first transistor Tr ₁₁
The base potential of the first transistor Tr 11 becomes a positive potential, but if there is no display command, the write contact WS ₁ is closed, so the collector potential of the first transistor Tr ₁₁ becomes negative through the diode D ₁₅ and does not conduct.

Give the display command here and write contact WS ₁ ~ _{WS o}
When opened, the first transistor Tr ₁₁ becomes conductive, and subsequently the second transistor Tr ₁₂ also becomes conductive,
The pulse motor drive relays _M11 ... _Mno are operated to close the contacts _m11 ... _mno , and the pulse motor _PM11 ... _PMn1 of the display device of the desired stage starts rotating.
For example, when the write contact WS ₁ of the first line is opened, only the pulse motor PM ₁₁ of the first line is started.

As a result, the display conversion operation of the display unit starts, and the selected one of the wipers W ₁₁ ... W _n1 advances one step at a time until it reaches a predetermined bank contact B ₁₁ ... B _n1. Then, the potential at _one point A becomes zero potential, and as a result, the transistor
Tr ₁₁ and Tr ₁₂ are turned off, and the pulse motor PM ₁₁
…PM _n1 stops.

Thereafter, display information is read out via predetermined banks _B11 ... _Bn1 in which the wipers _W11 to _Wn1 are stopped.

In this way, the column to be displayed is selected, display information is given from the information line DB, and the write contact is
By selecting a desired line from WS ₁ to _{WS o} , a desired display can be performed on the display device of a desired line of a desired stage. At this time, when the write contacts WS ₁ to WS _o of each line are opened all at once, the same content is displayed on all display devices of the selected stage. In the illustrated example, the horizontal columns are referred to as stages, and the vertical columns are referred to as lines, but the same applies even if they are reversed.

As is clear from the above illustrated examples, according to the present invention, each display device is equipped with only a display section, a drive source, a stage signal receiving relay, and a motor control relay, and is used for display detection, confirmation, and motor control. The control circuit of
By commonly connecting each line to each display device, the configuration of each display device and the entire system is simplified, and costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of one set of conventional display devices;
The figure is a circuit diagram of a conventional multi-display device, and FIG. 3 is a circuit diagram showing an embodiment of the multi-display device of the present invention. In the figure, CC is a stage selection circuit, LC ₁ to _{LC o} are line control circuits, W ₁₁ ...W _no is a wiper for position detection, B ₁₁ ...
B _no is a bank contact, G ₁₁ ...G _no is a stage signal reception relay, M ₁₁ ...M _no is a pulse motor control relay,
PM ₁₁ ...PM _no indicates a pulse motor, Tr ₁₁ ...Tr _n2 indicates a transistor, L ₁₁ ...L _no indicates a detection line, WS ₁ ...WS _o indicates a write contact, and DB indicates an information line.

Claims (1)

[Claims for Utility Model Registration] A multi-stage display device comprising a plurality of sets of display devices each having a display section, a drive source for driving the display section, a stage signal receiving means, and a control means for the drive source in the line direction. In a multi-display device consisting of display devices, an information line for transmitting display information to the display section of each display device, and a step signal receiving means and a drive source control means of each display device are independent for each step. and a line control circuit commonly connected to the display devices of each stage in the line, the line control circuit being commonly connected to the drive source control means of each stage. and a display confirmation means that is commonly connected to the detection line of the display position detection means of the display section of each stage and detects and confirms that the display section has displayed the instructed information. 1. A multi-display device comprising: a control circuit that issues a stop signal to the drive source control means of each stage when the display is confirmed by the display confirmation means.