JPS636786Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a device capable of selecting a large number of operation modes (for example, a samba in an autorhythm device,
A performance operation setting device suitable for electronic musical instruments equipped with various rhythm modes such as waltz, swing, etc., rhythm modes similar to those described above in an auto bass chord device, and various tone modes in a tone control device, etc. Person in charge,
In particular, it relates to something that minimizes the number of operation keys required for switching operations.

Recently, various electronic musical instruments such as electronic organs, electronic pianos, musical synthesizers, etc. have been developed, and these electronic musical instruments are equipped with extremely rich functions by taking advantage of the ease of electronic control. Since these various functions are selectively controlled individually, these electronic musical instruments have an extremely large number of selection keys for selecting the above-mentioned functions. To explain this using a specific example, for example, an electronic organ with an autorhythm has an autorhythm generating circuit, and this generating circuit has a rhythm start control section for driving it. This rhythm start control section consists of a start/stop switch that commands the start and stop of the rhythm, and a flip-flop circuit that is reversely controlled by this switch.The output of this flip-flop circuit is used to start a counter that drives a circuit that forms a rhythm pattern signal. /stop control. Furthermore, various functions such as auto rhythm function, auto arpeggio function, preset tone function, auto bass chord function, etc. are also provided. Each of these functions is further provided with a plurality of operation modes, and a number of selection keys corresponding to each of these operation modes are provided. For example, just looking at the autorhythm function, it has as many operation modes as there are rhythm types, specifically march, waltz, swing, swing, jazz rock, jazz rock, slow rock, bossa nova, tango, rumba, mambo, and samba. etc.
There are more than 10 different operating modes, and more than 10 selection keys are required for just these modes. That is, in conventional electronic musical instruments, selection keys are provided for each stage function and each operation mode. Therefore, the electronic musical instrument as a whole requires a truly enormous number of selection keys.

As a result, before playing an electronic musical instrument, the user must first search for selection keys for each function and then select keys for each operation mode. Furthermore, when selecting the desired operation mode for each function, if there are many selection keys, it is easy to cause operational errors such as selecting the wrong key by mistake, and the assembly process is troublesome. Various inconveniences have been brought about, such as the above problem and the large space occupied to arrange a large number of selection keys.

This invention was devised in view of the above-mentioned problems, and its purpose is to enable operation on/off and mode selection in the performance control device with a single selection key, thereby reducing the number of operation keys and making it possible to reduce the number of operation keys on the panel surface. The aim is to reduce occupancy, reduce costs, and improve operability.

A preferred embodiment of this invention will be described in detail below with reference to the accompanying drawings.

In the embodiment shown in the drawings, the function of controlling the start and stop of the rhythm and the function of selecting and controlling the automatic rhythm operation mode (rhythm pattern mode) are performed with a single operation key. be.

FIG. 1 is a block diagram showing the electrical configuration of this invention. As shown in the figure, the device of the present invention includes a gate control circuit 2 for time-discriminating the activation duration of the operation key 1, an AND gate 3 whose opening/closing is controlled by the output of the gate control circuit 2, and a It includes a counter 5 for counting clock pulses supplied from a clock oscillator 4, and a T-type flip-flop 7 which receives and inverts an instantaneous pulse output from a differentiating circuit 6 each time the operation key 1 is operated.
A performance control means 12 including a rhythm sound generation circuit 8 having a plurality of operation modes selectively designated by the counting output of the counter and controlled on and off by the output of the T-type flip-flop 7; The mode display means 9 is controlled by counting output and displays a display corresponding to the operating mode at that time.

In the example shown in Fig. 1, a ring counter is used as the counter 5, and the counting output terminals _Q0 to _Q8 of this ring counter are connected to the clock input terminal CK.
Each time a clock pulse arrives, an "H" signal is selectively output. Further, the gate control circuit 2 branches the output of the operation key 1 into two, and supplies one directly to the AND gate 3, and the other is supplied to the AND gate via a one-shot circuit 10 and a NOT gate 11. 3
AND gate 3
From now on, only when the operation key 1 is continuously pressed for a period longer than the output pulse width of the one-shot circuit 10, the gate of the AND gate 3 is opened from the time when the output of the one-shot circuit 10 falls to the time when it turns on and off. , and outputs the clock from the clock oscillator 4 between them. The ring counter 5 is incremented by this clock. Also, when operation key 1 is turned on, corresponding to the time when it is turned on,
A minute width pulse is output from the differentiating circuit 6, and the T-type flip-flop 7 is alternately turned on and off by this pulse.

In the rhythm sound generation circuit 8, when the Q output of the T-type flip-flop 7 is "1", the rhythm sound signal selected by one of the outputs _Q1 to _Q8 of the ring counter is supplied to a sound system (not shown).
In other words, the rhythm sound generation circuit includes march (MARCH), waltz (WALTZ), swing (SWING), slow lock (SLOW-LOCK),
Eight operating modes are provided, consisting of JAZZ-LOCK, RUMBA, BOSSA-NOBA, and SAMBA, and the output terminal of the counter 5
One of the operation modes is selectively selected depending on which of _Q1 to _Q8 the "H" signal is output. Then, the rhythm sound generation circuit 8 outputs a rhythm signal corresponding to the selected operation mode, and this rhythm signal is supplied to a sound system (not shown).

The specific structure of the rhythm sound generation circuit is known from, for example, Japanese Patent Publication Nos. 51-36059 to 1983, and therefore detailed explanation will be omitted here.

On the other hand, various circuit configurations can be adopted as the display means 9. For example, display lamps _L1 to _L8 corresponding to march, waltz, . , a lamp driver 12 is inserted between these lamps L ₁ -L ₈ and each output terminal Q ₁ -Q ₈ of the counter ₅ , as shown in FIG. The lamps _L1 to _L8 are configured to be directly driven by the "H" signal output to _Q8 .

Another configuration of the display means ₉ , for example, as shown in _FIG . In addition to being arranged on the electronic musical instrument, on the output side of the counter 5 there are ROMs ₁ to 10 that operate as character generators.
ROM ₉ is provided, character data is stored in ROM ₁ to _{ROM 9} to display a character as shown in the comparison table of FIG. 4, and this character data is used as parallel data Q ₁ to Q ₈ of the counter. The readout character data is read out as appropriate by the controller 10, and the character displays _CD1 to _CD9 are driven by the read character data via the drivers _D1 to _D9 .

In the above circuit configuration, for example, when the operation key 1 is pressed for a short time, that is, when it is pressed for a period shorter than the output pulse width of the one-shot circuit 10, the waveforms of each part i to v in FIG. 1 will be as shown in FIG. 6. As shown in the figure, each time the operation key 1 is pressed, only the rhythm sound generation circuit 8 repeats ON and OFF, and no clock pulse is supplied to the counter 5.
Therefore, counter 5 is not incremented. On the other hand, if operation key 1 is pressed for a long time,
In other words, if the button is pressed for longer than the output pulse width of the one-shot circuit 10, each part i to v in FIG.
The waveform of is as shown in FIG. 7, and as soon as the pulse of the one-shot circuit 10 ends, the clock pulse starts to be supplied to the clock input terminal CK of the counter 5, and in response, the clock pulse is supplied to the output terminal CK of the counter 5 _.
~ _Q8 will get “H” output in order,
Furthermore, in response to this, in the case of Figure 2, for example, the lamps L ₁ to _{L 8} will be lit one by one in order, and the rhythm sound generation circuit 8 will display the lamps that are lit at that time. A rhythm signal corresponding to the rhythm name is output.

In addition, in the example shown in Figs. 3 to 5, if the operation key 1 is pressed for a long time in the same way as above, the character displays CD ₁ to _{CD 9} will display the rhythm as shown in the comparison table in Fig. 4. The name is displayed in alphanumeric characters as shown in FIG. The contents of are also changed in accordance with the character display.

Next, when the operation key 1 is released, the count value of the counter 5, which had been incrementing up to that point, stops incrementing and is held in that state. That is, the seventh
In the figure, the count value of counter 5 is “5” (Q ₅
= “1”). At this time, the rhythm sound generation circuit 8
is maintained in a state in which rhythm sound signals can be generated. As a result, the display circuit 9 displays the rhythm name corresponding to the output _Q5 of the ring counter. At this time, if the output of the flip-flop 7 is "1", a state v is reached in which the JAZZ/LOCK rhythm pattern signal is supplied to the sound system. Therefore, when the desired rhythm name is displayed while pressing the operation key 1, if the operation key 1 is released, the output of the rhythm sound generation circuit is set to the desired content and the output is output via the sound system. Therefore, it is possible to obtain the desired rhythm sound. Also
When the JAZZ/LOCK rhythm is displayed on the display circuit 9, the output of the flip-flop 7 is “0”
If (i.e., the output of ring counter 5
(When Q ₀ is not "1" and any rhythm is selected and the state is T ₁ in Figure 6 or T ₂ in Figure 7), it corresponds to the rhythm name displayed on the display circuit 9. Since the rhythm sound signal generated by the rhythm sound signal is ready to be generated from the rhythm sound generation circuit 8, if you quickly press and release the selection key at this time, the rhythm start state will be activated and the rhythm displayed on the display circuit 9 will be generated from the sound system. become. Next, if you press operation key 1 for a shorter time,
As shown in FIG. 7, only the flip-flop 7 is inverted and the rhythm sound generation circuit 8 is turned off.

As described above, according to the embodiment of the present invention, each operation mode can be selected in a performance control means having multiple operation modes (e.g., rhythm sound generation circuit, auto bass chord circuit, tone control circuit, auto arpeggio circuit, etc.). When the operation key continues to operate for a certain period of time,
The clock gate is opened only until the activation of the operation key is released, and the ring counter is controlled to advance by the clock pulse that passes through the gate during this period. Since the performance control means itself is configured to be ON/OFF controlled by the output of the flip-flop, it is not necessary to provide mode selection keys corresponding to each operation mode as in the conventional example described above. Switches for turning on and off each performance control means (e.g. autorhythm start/stop switch)
etc., and the number of various selection keys in this type of electronic musical instrument can be significantly reduced compared to the conventional one.

In the above embodiments, a ring counter is used as a counter, but it is of course possible to use a binary counter and a decoder that converts its output into an alternative signal, as well as a display means. It is of course possible to use not only electrical means but also mechanical means such as writing the rhythm name on the surface of the cylinder and rotating the cylinder.

As is clear from the above description, the operation mode switching device according to the present invention includes one operation key used for turning on and off the operation and selecting a mode in the operation, a clock pulse oscillator that emits clock pulses at a predetermined period, and the operation mode switching device according to the invention. Gate control means that opens a predetermined gate only from the time when the operation duration of the key exceeds a certain time until the time when the operation key is released, and step control is performed by a clock pulse that passes through the gate. counter and
a flip-flop that turns on and off each time the operation key is operated; a performance control means that is controlled on and off by the output of the flip-flop and whose mode is selected by the count output of the counter; Since the present invention is equipped with a mode display means for displaying a display corresponding to the operation mode of This makes it possible to minimize the occupation rate of various keys, facilitate manufacturing, reduce costs, and improve operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of this invention, FIG. 2 is a circuit diagram showing one example of the display means, and FIG. 3 is a circuit diagram showing another example of the display means.
Figure 4 is a comparison table showing the input/output relationship of the character generator, Figure 5 is a diagram showing the display mode of the character display, and Figure 6 is the signal state of each part when the operation key is pressed for a short time. FIG. 7 is a waveform diagram showing the signal state of each part when the operation key is pressed for a long time. 1... Operation key, 2... Gate control circuit, 3...
...AND gate, 4...clock oscillator, 5...
Counter, 7... flip-flop, 9... display circuit.

Claims (1)

[Claims for Utility Model Registration] One operation key used for turning on and off an operation and selecting a mode for the operation, a clock pulse oscillator that emits clock pulses at a predetermined period, and the operation duration of the operation key exceeding a certain period of time. gate control means that opens a predetermined gate only between the time and the time when the operation key is released; a counter whose progress is controlled by a clock pulse that passes through the gate; and a counter that is turned on and off each time the operation key is activated. a flip-flop that repeats the operation; a performance control means that is controlled on and off by the output of the flip-flop and whose mode is selected by the counting output of the counter; and a performance control means that is controlled by the counting output of the counter and displays a display corresponding to the current operating mode. A performance operation setting device for an electronic musical instrument, comprising: mode display means for performing the performance.