JPS61216539A - Switch data transferring equipment - Google Patents

Abstract

PURPOSE:To reduce the quantity of an interface by allotting only one data line to an interface, parallel series converting switch data in the transmitting side having operation pulse and serial-parallel converting data coming to the data line in the receiving side that takes in the switch data. CONSTITUTION:When transferring switch information to a data processing device, a switch 4 is depressed and the information is inputted to a pulse generating circuit 14 through a switch filter 9 as output signals 13. On receiving the output signal 13 of the switch filter, the pulse generating circuit 14 generates a switch data set signal 15, and stores outputs 10-12 of the switch filter in a parallel-series converting circuit 17 and then generates shift pulses 16 corresponding to the number of data switches 1-3. Shift pulses 16 are inputted to a driver 18 and inputted to a serial parallel converting circuit 21 of the data processing device side through a shift pulse line 20. The switch information shifted out to a data line 19 by the number of shift pulses is shifted in to the serial-parallel converting circuit 21.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to an interface device for a computer.
The present invention relates to a data transfer method between an operation panel and a data processing device that receives switch information on the panel.

〔overview〕

The present invention is an interface device that inputs switch data manually set on an operation panel into a control circuit, in which only one data line is assigned to the interface, and the switch data is parallel-serial converted on the transmission side where operation pulses are generated. On the receiving side, which takes in switch data via this interface, the amount of hardware for the interface is reduced by serial-parallel converting the data arriving on this data line.

[Conventional technology]

Conventionally, when transferring switch information from an operation panel to a data processing device, for example, if n bytes of information were required, each byte consisting of 8 bits, 9xn pieces of switch information were naturally required, and the operation panel In order to transfer switch information between the data processing device and the data processing device, a transfer means for 8×n signals is required.

[Problem that the invention seeks to solve]

As mentioned above, the interface has the drawback of being composed of a large amount of hardware.

An object of the present invention is to provide a switch data transfer method that requires less hardware.

[Means for solving problems]

The present invention provides a device for transferring data set to a plurality of switches arranged on an operation panel, in which a single data line is provided between a data transmitting side and a data receiving side, and the transmitting side is connected to a data line. , circuit means for converting parallel data connected to the plurality of switches into serial data and transmitting the serial data to the data line, and a circuit for supplying pulses equal to or greater than the number of the switches to the circuit means during data transfer. The receiving side is characterized by comprising circuit means for converting serial data arriving on the data line into parallel data.

[For production]

The transmitting side includes a parallel-to-serial conversion circuit for transmitting a plurality of switch data onto one data line on the interface. The receiver receives multiple signals sent on its data line,
When transferring switch data, the transmitting side transmits shift pulses equal to the number of switch data to be transferred from the pulse generating circuit to the receiving side. Thereby, a plurality of switch data can be transferred using one data line.

〔Example〕

Next, the present invention will be explained with reference to the embodiments shown in the accompanying drawings.

The figure is a block diagram of a device according to an embodiment of the present invention. The outputs 5 to 7 of the toggle switches 1 to 3 and the output 8 of the data transfer switch 4 are input to a switch filter circuit 9. Outputs 10 to 12 of the switch filter circuit 9 are input to a parallel-to-serial conversion circuit 17.

The other output 13 of the switch filter circuit 9 is sent to the parallel-to-serial converter circuit 17 via a pulse generator circuit 14 as a switch signal 15 and a shift pulse 16. Above, the shift pulse 16 is a shift pulse, dry, bar:
A serial/parallel conversion circuit with shift pulse line 20 via 18,
21. Enter. Further, the output of the parallel/serial conversion circuit 17 is inputted to the serial/parallel conversion circuit 21 via the data line 19, and 0 is input to the serial/parallel conversion circuit 21. Reference numerals 22 to 24 in the drawing are switch reception data of the serial/parallel conversion circuit 21.

The output signals 5 to 7 of the data switches 1 to 3, which are composed of toggle switches, are logical "when the data switches are in the open state.
1", is held at logic "0" in the closed state, and the outputs 10 to 12 of the switch filter are passed through the switch filter 9.
The signal is input to the parallel-to-serial conversion circuit 17 as a signal.

To transfer the switch information to the data processing device, switch 4 is pressed. The output signal 8 is set to logic "0" only while the button is pressed, and the output signal 1 is output via the switch filter 9.
3 to the pulse generation circuit 14. Upon receiving the output 13 of the switch filter, the six-pulse generation circuit 14 generates one switch data set signal 15, stores the outputs 10 to 12 of the switch filter in the parallel-to-serial conversion circuit 17, and then outputs the shift pulse 16. The number of occurrences corresponds to the number of data switches 1 to 3. The shift pulse 16 is inputted to the driver 18, and the switch information shifted out onto the data line 19 by the number of shift pulses is inputted to the serial/parallel conversion circuit 21 on the data processing device side via the shift pulse line 20. Shift to serial/parallel conversion circuit 21.

When all switches and information transfer are completed, the data processing device side outputs the serial/parallel converter circuit 21.
This means that the power signals 22 to 24 have been received as switch information.

[Effects of the Invention] As explained above, the present invention greatly reduces the number of signal lines on the ink face by using one data line to transfer multiple pieces of switch information using shift pulses from the transmitting side. There is an effect that can be done.

[Brief explanation of drawings]

The figure is a block diagram of an apparatus according to an embodiment of the present invention. 1-3... Data switch, 4... Data transfer instruction switch, 5-8... Switch output signal, 9... Switch filter circuit, 10-13... Output of switch filter circuit, 14. ...Pulse generation circuit, 15...
Switch data set signal, 16...shift pulse,
17... Parallel-serial conversion circuit, 18... Shift pulse driver, 19... Data line, 20... Shift pulse line, 21... Serial-parallel conversion circuit, 22-24... Switch reception data .

Claims (1)

[Claims] (1) In a device that transfers data set to a plurality of switches arranged on an operation panel, one data line is provided between a data sending side and a data receiving side, and the sending side has a circuit means for converting parallel data connected to the plurality of switches into serial data and transmitting the serial data to the data line; and a circuit for supplying pulses equal to or greater than the number of the switches to the circuit means during data transfer. . A switch data transfer device, characterized in that the receiving side is equipped with circuit means for converting serial data arriving on the data line into parallel data.