JPH0117558B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a signal generator.

2. Description of the Related Art Conventionally, some portable multi-functional digital watches use a reuse-type rotary switch to adjust the time. In addition to the rotary switch mentioned above, this is equipped with a mode changeover switch for selecting various functions such as current time, alarm time, and timer, and the rotary switch is used to modify and set the function selected by this switch. It is. This rotary switch has two switches that generate two systems of pulse trains that are out of phase with each other, and the direction of rotation of the rotary switch is detected based on the order in which each pulse is generated to advance or delay the function. . As described above, a mode changeover switch and a rotary switch having two switches are required, which requires a large number of parts and complicates the manufacturing process.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a signal generator having a simple configuration and a wide variety of functions, thereby eliminating the drawbacks of the conventional apparatus.

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a knob fixed to a rotating shaft 2, and the rotating shaft 2 is movable in the axial direction. 3 and 4 are rotating bodies each having four teeth, and are fixed to the rotating shaft 2. The teeth of the rotating body 3 and the teeth of the rotating body 4 are formed with a phase difference of 45° as shown in FIG. 5 and 6 are contact pieces, which are opened and closed by the rotation of the rotating bodies 3 and 4, respectively. Since the contact piece 5 engages with the rotating body 3 when the knob is pulled out, it is the part of the rotating body 3 on the knob 1 side. is formed into a tapered shape. Note that the teeth and contact piece 6 of the rotary body 4 correspond to the first pulse generator, and the teeth and the contact piece 5 of the rotor 3 correspond to the second pulse generator. In FIG. 4, 11 is a discrimination circuit for determining the presence or absence of a pulse from the second pulse generator, and 12 to 15 are counters for the current time, date, day of the week, and alarm time, respectively, and these correspond to the counting circuit. are doing. 17 is a decoder, and 18 is a display device. 19 is a ring counter for mode switching and corresponds to the selection output circuit. 20
is a delay circuit. 21 to 37 are gate circuits, 26 corresponds to a first output circuit, 23 corresponds to a second output circuit, and 24 corresponds to a third output circuit. 38 is an inverter.

Next, the operation will be explained. A clock pulse of a fixed period is supplied to the terminal CL of the gate circuit 29 in FIG. 4, and the counter 12 measures the current time. Count the date and day of the week, respectively. One of the counters 12 to 15 is selected by the selection circuit 16 based on the output of the ring counter 19 and displayed on the display device 18.

Therefore, first, the switching operation of display contents (mode) will be explained. Flip-flop circuit 1 in Figure 4
1 is set, and the flip-flop circuit 7
A cross pulse for chattering removal and delay is supplied to the input terminals A of 10 as shown in FIG. 5A.

Therefore, by rotating the knob 1 while being pushed in as shown in FIG. 1, only the contact piece 6 opens and closes, and the contact piece 5 is held in the open state. Therefore, the contact signal of the contact piece 6 is supplied to the terminal B in FIG. 4 as shown in FIG. 5B, and pulses are generated from the outputs of the flip-flop circuits 7 and 9 as shown in FIGS. 5D and E, respectively. Since the contact piece 5 is currently held open, the flip-flop circuits 8 and 10 and the gate circuit 2
No output is generated from 2 to 24, and the gate circuit 25
From this, a pulse is generated as shown in FIG. 5J. This pulse generates a pulse from the gate circuit 26 as shown in FIG. 5M, and the ring counter 19 is incremented by one. On the other hand, the pulse shown in FIG. 5M is delayed by the delay circuit 20 to produce the pulse shown in FIG. 5N, which sets the flip-flop circuit 11 and opens the gate circuit 26.

As described above, each time a contact signal is supplied to terminal B, the ring counter 19 is incremented one by one, and selection outputs of the current time, date, day of the week, and alarm time are generated from terminals a to d, and the selection circuit 16 outputs the current time, date, day of the week, and alarm time. Therefore, one of them is selected and displayed. In this way, the pulse from the contact piece 6 at this time is used for mode switching. Also, depending on the output from terminals a to d, gate circuits 27, 28, gate circuit 30,
31 gate circuits 33, 34, gate circuits 36, 3
7 opens, and the contents displayed on the display device 18 can be changed.

Next, the operation of changing the content selected above will be explained. In this case, set knob 1 to
Pull out and rotate as shown. As a result, phase-shifted pulses are generated from the contact pieces 5 and 6, respectively, as shown in FIG. Pulses are generated from the gate circuit 24 as shown in FIG. 6F and G, respectively, and pulses are generated from the gate circuit 24 as shown in FIG. 6H. This pulse causes the contents of the counter selected above among the counters 12 to 15 to be down-counted and changed.

On the other hand, at this time, a pulse as shown in FIG. 6J is generated from the gate circuit 25, but before that, a pulse as shown in FIG. 6K is generated from the gate circuit 22, the flip-flop circuit 11 is reset, and the gate circuit 26 is closed. ing. Therefore, the gate circuit 26 does not generate a pulse for mode switching as described above. The flip-flop circuit 11 is triggered by the rise of the pulse shown in FIG. 6J, and the gate circuit 26 is opened.

Next, when the knob 1 is rotated in the opposite direction to the above, the opening and closing order of the contact pieces 5 and 6 will be reversed to the above.
The pulses supplied to terminals B and C in FIG. 4 are reversed as shown after time t in FIG. 6. Therefore, at this time, from the gate circuit 24 to H in FIG.
A pulse is generated as shown below, and a selected one of the counters 12 to 15 is counted up and its contents are changed.

When the knob 1 is pulled out in this manner, the contact signal generated from the contact piece 5 is used to determine the direction of rotation of the knob 1 and to change the contents of the selected counter.

In addition, although the above embodiment describes the case where it is used in a watch, it is not limited to this, and it can be used in any device that is equipped with a plurality of counters, etc., and whose contents are displayed on a common display device. But it can be applied.

Furthermore, in the above embodiment, the two rotating bodies 3 and 4 whose teeth are shifted from each other are used to give a phase difference to the pulses from the contact pieces 5 and 6, but the present invention is not limited to this. do not have. For example, only one rotating body may be used, and the two contact pieces may be arranged offset in the rotational direction of the rotating body.

As described above, according to the present invention, by using only the first pulse generator and the second pulse generator, not only the counting operation of the selection circuit is performed, but also the up-counting and down-counting of the count value of the counting circuit. You can also perform movements. Therefore, the counting control device can be configured with a simple configuration with a small number of parts.

For example, when used in a multi-function watch, the pulses from the first pulse generator can be selectively used to detect the rotational direction of the rotating body, change the contents of each function, and switch modes. This has a great effect on miniaturization.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing one embodiment of the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a partial view showing the state in which the knob in Fig. 1 is pulled out. 4 is a logic circuit diagram showing an example of the circuit configuration, and FIGS. 5 and 6 are time charts for explaining the operation. 2... Rotating shaft, 3, 4... Rotating body, 5, 6...
Contact piece, 7-11...Flip-flop circuit, 20
... Delay circuit, 21-26 ... Gate circuit, 38
...Inverter.

Claims (1)

[Claims] 1. A rotating body movable in the direction of the rotation axis, a first pulse generator that generates a series of pulses by rotation of the rotating body in a first moving position and a second moving position, and A second system that generates another system of pulses having a different phase from the one system of pulses only by the rotation at the first movement position.
a pulse generator, and a determination circuit 11 that determines the presence or absence of a pulse from the second pulse generator,
a first output circuit 26 which receives the output of the discrimination circuit when there is no pulse from the second pulse generator and generates a pulse output in response to the pulse from the first pulse generator; A pulse output is generated when the pulse generation order of the pulse from the first pulse generator and the pulse from the second pulse generator generated in response to rotation at the first movement position is in a predetermined order. The second output circuit 23 determines the pulse generation order of the pulses from the first pulse generator and the pulses from the second pulse generator that are generated in response to the rotation of the rotating body at the first movement position. A third output circuit 24 that generates a pulse output in the opposite order to the above predetermined order.
and a selection output circuit 19 that receives the pulse output from the first output circuit and sequentially generates selection outputs;
A plurality of counting circuits 1 which are sequentially selected by each selection output of this selection output circuit and perform up-counting and down-counting, respectively, in response to pulse outputs from the second output circuit and the third output circuit.
2, 13, 14, and 15.