JPS61182342A - Data transmitter - Google Patents

Abstract

PURPOSE:To attain efficient signal transmission between a data transmitter and a data receiver by providing a data generating means, an output data storage means, a time count means and a data output means. CONSTITUTION:An address and data in pairs in a signal generated from the data generating means 10 are stored in an output data storage means 11. The time count means 12 counts a prescribed time, outputs overflow flag, by which an interruption start means 13 outputs an interruption start signal to the data output means 16. The data count means 14 counts the data or signal outputted from the data output means 16 and outputs a coincidence signal when the count reaches a number stored in the output data storage means 11. The data output means 16 starts outputting a signal in the output data storage means 11 by using the interruption start signal from the interruption start means 13 and completes the output by using an interruption release signal from an interruption release means 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a data transmitting device that efficiently transfers a plurality of control signals for a plurality of channels between asynchronously operating signal processing devices in electronic musical instruments and the like. It is something.

2. Description of the Related Art In recent years, electronic musical instruments have come to be controlled by digital signals, and digital signals have come to be transmitted and received between signal processing devices such as control devices and musical tone generators. Conventionally, when transmitting and receiving signals between asynchronously operating signal processing devices, the data transmitting device requests interrupt processing to the data receiving device every time a 1-byte signal is transferred.

An example of the above-mentioned conventional data transmitting device will be described below with reference to the drawings.

FIG. 4 and FIG. 5 show a block diagram of a conventional data transmitting device and its timing diagram.

In FIG. 4, 4Q is data generation means, 41 is data output means, 42 is interrupt request means, and 43 is identification signal output means.

The data output means 41 outputs the signal generated by the data generation means 40 to the data reception device.

The interrupt request means 42 sets an interrupt request signal to the data receiving device every time the data output means 41 outputs a signal, and responds to the interrupt request signal from the data receiving device. Reset the signal.

The identification signal output means 43 outputs a signal that identifies whether the signal output by the data output means 41 is an address or data.

Problems to be Solved by the Invention However, in the above configuration, the data transmitting device and the data receiving device must exchange signals asynchronously, so it is necessary to perform interrupt transfer for each signal. It was taking a long time to transfer.

Means for Solving the Problems In order to solve the above problems, the data transmitting device of the present invention includes a data generation means for generating a signal, an output data storage means for storing the generated signal, and a time counting means. and a data output means for outputting a plurality of signals including the signal in the output data storage means at a predetermined time counted by the time counting means.

According to the above-described structure, the present invention stores the pair signal of the address and data of the signal generated by the data generation means in the output data storage means, and outputs the stored signal at a predetermined time counted by the time counting means. can be transferred continuously, and signals can be efficiently transferred between the data transmitting device and the data receiving device.

Embodiment Hereinafter, a data transmitting device according to an embodiment of the present invention will be described with reference to the drawings.

1 and 2 are a block diagram and a timing diagram of a data transmitting device in a first embodiment of the present invention.

In FIG. 1, 1o is a data generation means, 11 is an output data storage means, 12 is a time counting means, 13 is an interrupt starting means, 14 is a data counting means, 15 is an interrupt canceling means, 16
17 is a data output means, 17 is a synchronization signal output means, and 18 is an interrupt request means.

The address of the signal and the data bare generated by the data generation means 1o are stored in the output data storage means 11.

The time counting means 12 counts a predetermined time and outputs an over, flow, and flag, and depending on the flag, the interrupt starting means 1
3 outputs an interrupt start signal to the data output means 17.

The data counting means 14 counts the data or signals output from the data output means 17, and counts the data or signals outputted from the output data storage means 11.
When the number stored in the memory is reached, a match signal is output.

The data output signal 17 starts outputting the signal in the output data storage means 11 in response to an interrupt start signal from the interrupt start means 13, and ends in response to an interrupt release signal from the interrupt release means 15.

When the data output means 17 starts outputting a signal, the interrupt request means 18 sends each interrupt request signal to any one of the plurality of connected receiving devices or to several receiving devices at the same time. is set, and each interrupt request signal is reset by the interrupt release request means from each receiving device.

The synchronization signal output means 19 outputs a synchronization signal that is inverted every time a signal is output from the data output means 17.

FIG. 2 is a diagram showing internal timing when transmitting signals and signal input/output timing in the first embodiment.

FIG. 3 is a block diagram when the data transmitting device according to the first embodiment of the present invention is connected to two data receiving devices.

FIG. 6 and FIG. 7 are a block diagram and a timing diagram, respectively, of a data transmitting device in a second embodiment of the present invention.

In FIG. 6, 60, 61, and 62 are microcomputers (hereinafter referred to as microcomputers), 63 is an address 9 latch, 64 is a data latch, 65 is a decoder, and 66 is a D-
Flip-flop, 67°68S, R-7 flip-flop.

The microcomputer 6o implements a data generation means, an output data storage means, a time counting means, an interrupt starting means, a data counting means, and an interrupt canceling means within the microcomputer using software.

Address, latch 63 and D-flip-flop 64 provide synchronization signal output means, address, latch 63 and S,
The R-flip-flops 67 and 68 realize an interrupt requesting means outside the microcomputer.

Microcomputers 61 and 62 are used as two receiving devices.

FIG. 7 shows the internal timing at the time of signal transfer and the input/output timing of signals in the second embodiment.

The bus output port of the microcomputer outputs signals such as addresses and data with sub addresses attached to them, and synchronization signals and interrupt request signals are generated depending on the sub addresses.

As described above, according to this embodiment, the microcomputer outputs signals such as addresses and data with sub addresses attached to them, so that the synchronization signal output means and the interrupt request means can be centrally controlled. can.

In the first embodiment, the output signals of the data output means include a signal defining the number of signals and an address.

Although it is configured with a data bare signal, it may also be configured with an address, a data bare signal, and a signal that defines the end of transfer.

In the second embodiment, the interrupt request signal and the synchronization signal are generated outside the microcomputer, but they may also be generated using software within the microcomputer and output directly from the port.

Effects of the Invention As described above, the present invention stores the generated signal and continuously outputs it at a predetermined time by providing the data generation means, the output data storage means, the time counting means, and the data output means. Therefore, signals can be transferred efficiently between the data transmitting device and the data receiving device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a data transmitting device in a first embodiment of the present invention, FIG. 2 is a timing diagram of the data transmitting device of FIG. 1, and FIG. 3 is a data transmitting device and a data receiving device of FIG. 1. 4 is a block diagram of a conventional data transmitting device, FIG. 5 is a timing diagram of the data transmitting device of FIG. 4, and FIG. 6 is a data transmission diagram in the second embodiment of the present invention. A block diagram of the device, FIG. 7 is a timing diagram of the data transmitting device of FIG. 1o... Data generation means, 11... Output data storage means, 12... Time counting means, 1
3... Interrupt starting means, 14... Data counting means, 16... Interrupt canceling means, 16...
. . . data output means, 17 . . . synchronization signal output means, 18 . . . interrupt request means. Figure 1 113 Figure 4

Claims (4)

[Claims] (1) A data generation means for generating a signal, an output data storage means for storing the generated signal, a time counting means, and a signal stored in the output data storage means at a predetermined time counted by the time counting means. 1. A data transmitting device comprising: data output means for outputting a plurality of signals including: (2) The output data storage means stores the address and data pair of the signal generated by the data generation means within a predetermined time counted by the time counting means. data transmission device. (3) The data output means outputs a signal of one or more pairs of addresses and data in the output data storage means and one or more parameters specifying the end of the transfer at a predetermined time counted by the time counting means. The data transmitting device according to claim 1, wherein the data transmitting device outputs the following. (4) The data transmitting device according to claim 3, wherein the parameter is the number of signals to be transferred, the number of signals such as the number of pair signals to be transferred, or a signal that defines the end of transfer.