JPS61245225A - Output device for mixture of dynamic and static signals - Google Patents

Abstract

PURPOSE:To simplify the constitution of a titled output device for miture of dynamic and static signals by latching the prescribed data signal corresponding to the prescribed strobe signal via this strobe signal and delivering it as a static signal. CONSTITUTION:The data signal 4 is defined as a 16-bit signal containing data signals 4A and 4B of 8 bits each with an output device 05 for mixture of dynamic static signals. While a strobe signal 3 is defined as an 8-bit signal containing data signals 3A and 3B of 4 bits each. An individual latch element is provided at the intersecting point between the output line of the signal 4A or 4B and the output line of the signal 3B. Then the signal 4 is latched by the signal 3B and this latch output is defined as a static latch output signal 50.

Description

[Detailed description of the invention] [Technical field to which the invention pertains]

This invention is generated by signals output from a microcomputer (hereinafter referred to as microcomputer) board, etc.
The present invention relates to a simple signal output device that can convert a so-called dynamic signal output, which is normally used for displaying LEDs, etc., into a static signal output necessary for driving a relay, or can mix re-output.

[Prior art and its problems]

In the following description of each figure, the same reference numerals indicate the same or corresponding parts, and logic Hrgh and Low are represented by H1 in the car. As this type of signal output (display) device, the 6th
A dynamic signal output device having a matrix configuration as shown in the figure is known. That is, in the figure, DL is eight data lines and outputs an 8-bit data signal 4 given from a microcomputer (not shown) for LED display in this case. Also, SL has 8 strobe lines, the same (the strobe signal 3 given from the microcontroller not shown) is the same < LE
Output for D display. 2 is a driver for inverting and amplifying each strobe signal 3; 1 is an LED provided at the intersection of each cheetah line DL and strobe line SL. The strobe signal 3 is a signal that is repeatedly output periodically while sequentially selecting one of the eight strobe lines SL at a predetermined time interval, and the data signal 4 is a signal that is output repeatedly while sequentially selecting one of the eight strobe lines SL at predetermined time intervals. synchronized to a time interval of
It is updated and output as a signal indicating data corresponding to each strobe signal 3 selectively output. In this case, the displayed LED is the strobe signal 3
It is lit only during the period when the output of the strobe signal 3 and the data signal 4 overlap, and this is repeated at the cycle of the repeated output of the strobe signal 3, so that it is displayed blinking. However, this cycle may be set to, for example, 50H2 or more. Due to the so-called afterimage phenomenon, people can feel that the display is stable. Such a dynamic signal output device has a large number of output points with a small number of output signal lines (data line DL and strobe line SL in FIG. 6). For example, when trying to light up 64 LEDs, the number of output signal lines is (1) Dynamic output method (Figure 6) 78+8.16
(2) Static output method (LE
Method of lighting D): 8 x 8, 64 lines, and the required number of output signal lines varies greatly depending on the signal output method. That is 64 books - 16 books 1 - 4
This will save you 8 bottles. In this way, the signal output device is equipped with a dynamic display means (LE).
D, etc.), there is no problem with the device shown in FIG. 6, so this is a very low-cost, simple and effective signal output means. However, a static or stable signal output (for example, a signal for driving a relay) is required from the signal output device.
There is a problem in that the apparatus shown in FIG. 6 cannot easily cope with this problem. For example, even if you simply connect a relay instead of the LEDI at the 6th meter, the short energization time will be repeated at a significantly longer period than this energization time, so the relay contacts will fluctuate due to vibration, making it difficult to operate correctly. Therefore, as an example of a method to easily solve this problem, as shown in FIG.
There is also a method of providing a circuit, but there are problems in terms of cost and circuit configuration. In addition, by using the capacitor 13, the load relay 12 is set to 0N, which is several times slower than the normal 0N10FF time.
This has a problem of 10 FF time, which makes it difficult to use from the viewpoint of operation delay time.

[Purpose of the invention]

The present invention eliminates the above-mentioned problems and allows a static signal output that can drive loads such as relays and solenoid valves to be obtained from a dynamic signal output device at low cost with a simple configuration according to the number of loads that require this signal output. The purpose is to provide a device that can.

[Key points of the invention]

Data latch means (for example, one of the commercially available IC sofas for microcomputer peripheral circuits) that latches and outputs the data signal applied to the matrix circuit via the strobe signal.
By installing a new LSI for data input/output, etc., it is dynamic. The present invention has the advantage that it is possible to obtain an arbitrary combination of load driving output and static load driving output as required. In other words, the gist of the present invention is to provide a plurality of strobe signal output lines (such as strobe lines) that sequentially and repeatedly output strobe signals at predetermined time intervals, and a plurality of data signals corresponding to the strobe signals at each of the time intervals. A plurality of data signal output lines (data lines, etc.) are provided at predetermined intersections of the strobe signal output line and the data signal output line, and output dynamic signals based on the combination of the strobe signal and data signal. A signal output device (dynamic display matrix circuit round,
ν) LP - means (such as a latch element) for latching the predetermined data signal output in response to the predetermined strobe signal via the strobe signal and outputting it as a static signal; The point is to be prepared.

[Embodiments of the invention]

An embodiment of the present invention will be described below based on FIGS. 1 to 5. FIG. 1 is a circuit diagram showing the overall configuration of an embodiment of the present invention, FIG. 2 is a time chart showing the timing of signals given to the device shown in FIG. 1, and FIG. 3 is a detail of the latch element in FIG. 1. FIG. 4 is a circuit diagram for explaining the operation, FIG. 4 is a time chart showing the timing of the input/output signals shown in FIG. 3, and FIG. 5 is a block diagram showing an example of the configuration of a system to which the device shown in FIG. 1 is applied. In the dynamic signal/static signal mixed output device (hereinafter referred to as mixed output device) 05 shown in FIG. 1, the data signal 4 is expressed as a 16-bit signal including 8-bit signals 4A and 4B. Similarly, the strobe signal 3 is also expressed as an 8-bit signal including 4-bit signals 3A and 3B. 5 (5A, 5B) are latch elements, and data signal 4 (
4A, 4B) by strobe signal 3B,
Latch output signal 50 as a static output signal (
50A, 50B). Such a latch element 5
There are low power silo-to-key TTL (LSTTL) devices such as the 8-bit tranche S N74L 3373 manufactured by Texas Instruments. Regarding this latch element 5, an individual latch element in place of the LEDI is provided at the intersection of the matrix formed by the output line of the data signal 4A or 4B and the output line of the strobe signal 3B, and the output of this individual latch element is It can be considered as an output signal 50. In Figure 2, (1) is data signal 4 (4A, 4B)
, (2), +31 are strobe signal 3 (
3A), 3 (3B) shows the output timing,
Strobe signal 3 is strobe line SL numbers 0 to 7.
In this order, the period T2, the time interval TI, and the repetition period To
is output repeatedly. The data signal 4 is updated and output every time interval T1 of output of the strobe signal 3. As a result, the LEDI is connected to the strobe line SL (number 0 to
The light is turned on or off in the same manner as in FIG. 6, depending on the combination of the strobe signal 3^ that sequentially selects the strobe signal 3) and the data signal 4 that is updated and output at each output time of the signal 3A. Hereinafter, for convenience, when it is necessary to easily distinguish a signal by its output line, the number of the output line will be added in parentheses after the signal code, for example, strobe signal 3A (number O). Similarly, each latch output signal 50 (50A, 50B) sequentially selects the strobe line SL (numbers 4 to 7) and updates and outputs the data signals 4^ and 4B at each output time of the strobe signal 3B to the latch element 5 (5A , 5B), each number 0 to 7 of the data line DL is latched.
Data corresponding to numbers 8 to 15 are output to the latch output lines LL of corresponding numbers. 3 and 4 are diagrams for further supplementary explanation of the operation of the latch element 5. In FIG. 3, four latch elements 5 are connected in parallel to the data line DL (numbers θ to 7). Strobe signal 3 as a latch signal to each latch element 5
An example is shown in which (numbers O to 4) are respectively given. In FIG. 4, (1) is the data line DL (number 0).
(2) shows the strobe signal 3 (numbers θ to 4), and (3) shows the latch output line LL (numbers 0 to 7) of the latch element 5.
) The 8-bit data in the data signal 4A, which indicates the latch output signal 50^ outputted from
For example, for the latch element 5 to which the strobe signal 3 (number 0) is applied, the time point t1 is updated as ~D4.
When this strobe signal 3 changes from L to H, the 8-bit data Do of the data signal 4A that is output to the data lines DL (numbers 0 to 7) at this time is directly transferred to the latch output line LL with the corresponding line number. (No. θ
~7) is output as a launch output signal 50A', and then at time t2, when the strobe signal 3 (number 0) changes from H to L, the data DO of this latch output signal 50A is fixed as it is, and the corresponding The data line DL and the launch output line LL are cut off. In this way, the latch output signal 50A of data DO-D4 is output from the latch element 5 in response to each of the strobe signals 3 (numbers O to 4).
will be output. FIG. 5(A) shows an example of a system to which this type of mixed device 05 is applied. In the figure, 01 is a key matrix for inputting operation signals, and an input control device provided in the input control device 02. 02 controls the key matrix 01, and transmits necessary signals based on the operation signals input from the key matrix 01 to the signal transmission section 03. Via transmission line 06,
It is transmitted to the output control device 04. The output control device 04 inputs the transmission signal from the input control device 02 via the signal transmission section 03, and transmits the data signal 4.
Then, together with the corresponding strobe signal 3, the mixed output device 05 is caused to output dynamic and static signals. The figure (B) shows a specific configuration of the mixed output device 05,
In the mixed output device 05 of the same figure (A), the parts marked with "DA" and "S" are similarly marked with "DA" in the same figure (B). In Fig. 5, signals are exchanged between the opposing control devices 02 and 04, but here, for example, the input signal of one control device 02 is used as the output signal of the other control device 04. If you only want to display the 0N10FF state of the input signal from one key matrix 01 on the other LED, etc., the signal output of the mixed output device 05 only needs to be a dynamic output, so the LEDs as shown in FIG. It is sufficient to simply arrange them in a matrix like this.However, depending on the input signal on one side, it may be necessary to display the input signal on the other side with an LED, and at the same time output a static signal in order to activate the relay. As an example of this, an input control device 02 reads an opening/closing operation signal of an opening/closing switch of a motor provided on one side (far away), and an output control device 04 provided on the other side reads the opening/closing operation signal in response to the opening/closing operation signal. There are cases where the motor Q @ vJli!] is controlled. In such applications, it is necessary to change the signal output circuit and configuration of the output control device 04 depending on the type of signal given to the input control device 02. However, in many cases, the usage pattern differs depending on the system that uses these devices, so a static signal output circuit and a dynamic signal output circuit are prepared on the output control device 04 side and connected to these. The output control device 04 must have a function to switch which output circuit should output data according to the load configuration.If the output control device 04 does not have this switching function, the target system It is necessary to design the function of the output control device 04 for each output control device, which greatly reduces the productivity of the output control device.If this switching function is built into the output control device,
This inevitably makes the inside of the device complicated, requires time and effort to design the switching function and set the function, and is not economical. However, if the mixed output device 05 of the present invention is adopted, the necessary number of dynamic signal output circuits and static signal output circuits can be combined, and strobe signals and data signals can be selected and output according to the characteristics of the load, making it easy to Dynamic and static outputs can be mixed economically. Generally, a microcomputer is used to control these static output circuits and dynamic output circuits, but in the mixed output device of the present invention, the microcomputer can control static output and dynamic output at the same timing. . Therefore, even if the mixed ratio of static output and dynamic output changes, there is no change in the software, and there is a great advantage that the hardware circuit can simply be changed to meet the requirements.

[Effects of the Invention] As is clear from the above explanation, according to the present invention, the LE
D A latch element is added to the display matrix, a data line common to the display matrix is connected to this latch element, and the latch element is selected by a strobe signal given to the display matrix or a strobe signal other than this signal, and this selection is performed. Since we decided to launch the data signal that is output at the time to the latch element and output it as a static output, this mixed output device can output a dynamic signal for display and a static signal output necessary for loads such as motors and relays. Since it is possible to select and output a variety of signal output circuits, it is possible to provide hardware circuits suitable for the type of load at low cost and quickly in applications where it is desired to select various configurations of the signal output circuit.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the overall configuration as an embodiment of the present invention, FIG. 2 is a time chart showing the timing of signals input to the device shown in FIG. 1, and FIG. 3 is a latch diagram shown in FIG. 1. A circuit diagram to explain the detailed operation of the element,
Figure 4 is a time chart showing the timing of the input/output signals in Figure 3, Figure 5 is a block diagram showing an example of a system configuration applying the device in Figure 1, and Figure 6 is a conventional dynamic signal output device. FIG. 7 is a diagram showing an example of the configuration of a conventional simple static signal output circuit. 05: Mixed output device, 3 (3A, 3B) Nistrope signal, SL Nistrope line, 4 (4A, 4B
): Data signal, DL=Data line, 5 (5A
, 5B): Latch element, 50 (50A, 50B)
:Latch output signal, LL two-latch output line. Spear 6 figure off figure

Claims (1)

[Claims] 1) A plurality of strobe signal output lines that sequentially and repeatedly output strobe signals at predetermined time intervals, and a plurality of data lines that output a plurality of data signals corresponding to the strobe signals at each of the time intervals. A signal output device comprising a signal output line, a means provided at a predetermined intersection of the strobe signal output line and the data signal output line, and outputting a dynamic signal based on the combination of the strobe signal and the data signal. , a dynamic and static signal mixture comprising means for latching the predetermined data signal output in response to the predetermined strobe signal via the strobe signal and outputting it as a static signal. Output device.