JPS6234115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a striking sound generating device used in an analog display timepiece, and particularly to preventing erroneous detection when detecting a striking signal.

Conventionally, in an analog watch with an electronic time striking function, a sliding pattern corresponding to the hour and minute hands is provided in advance on the hour and minute hands, a conductive contact is brought into contact with this sliding pattern, and the rotation of the hour and minute hands causes the conductive contact to A binary code time signal was detected from the 3D timer, and this was directly used as a reference signal for the time signal. However, according to this method, if there is dust etc. attached to the sliding pattern or conductive contact when detecting the time signal, or if bouncing etc. occurs while reading the time signal, the time signal is detected. There were times when the batting signal was not read accurately and the batting signal was read incorrectly. For this reason, in the past, a striking sound was often generated when the hour was incorrectly reached, which caused a problem.

The present invention has been made in view of the above-mentioned conventional problems, and its object is to provide a striking sound generating device that does not cause incorrect striking operations.

In order to achieve the above object, the present invention reads the time striking signals from the sliding pattern twice in succession, and causes the time striking to occur only when these time striking signals match.
If they do not match, reading is performed again until they match.

The present invention will be described in detail below based on preferred embodiments. The figure is a block diagram showing an embodiment of the present invention. Reference numeral 2 denotes an hour wheel, and its surface is provided with a conductive sliding pattern 4 corresponding to each hourly stroke number, and the sliding pattern 4 always receives a signal on the high potential side (hereinafter referred to as H). is being applied. Contact points 6, 8, 10, and 12 are slidably disposed on the surface of the hour wheel 2. These contacts 6, 8, 10,
12 has pull-down resistors 14, 16, and 1, respectively.
Since contacts 8 and 20 are connected, contacts 6, 8, and 1
At 0 and 12, signals which become H from the low potential side (hereinafter referred to as L) are obtained when the sliding pattern 4 is contacted. This sliding pattern 4, contacts 6, 8, 10, 12, pull-down resistors 14, 1
6, 18, and 20 constitute a striking signal detection means 21. The D-type latches 22 and 24 are connected to the contact point 6,
This is a storage circuit 27 that reads the signals from 8, 10, and 12 using the output signal from the signal generator 26 and temporarily stores them. Read signal generator 26
is the output Q of the reset flip-flop 28.
This circuit supplies a constant period pulse signal to the binary counter 30 and the digital comparator 32 when the signal changes from L to H. Digital comparator 3
2 is a circuit for comparing the output signals of the D-type latches 22 and 24. And the time striking circuit 34 has contact point 6,
Speaker 3 based on the signals from 8, 10, 12
This is a circuit that generates a signal that generates a required number of ticking sounds from the clock ticking circuit 34 and the speaker 3.
6 constitutes a ticking sound generating means 37. On the other hand, the gear train contact structure 38 is composed of, for example, a contact plate formed on the plane of the minute wheel and a contact spring that is arranged to be able to slide on the plane of the minute wheel. When the contact occurs, a rising signal that changes from L to H is output. The one-shot circuit 40 is a circuit that outputs a positive single pulse when the signal applied to its input rises from L to H. This wheel train contact structure 38 and the one-shot circuit 40 allow the striking time detection section 41
consists of flip-flop 28 and or gate 4
5 constitutes a read control circuit 43.

The operation of this circuit will be explained below. On the hour, a signal rising from L to H is obtained on the output line 42 of the wheel train contact structure, and this rising signal is applied to the one shot circuit 40. This produces a single positive pulse on output line 44 of one-shot circuit 40, which is applied via OR gate 45 to the set input of reset flip 28, so that the signal on output line 46 is From L to H. As a result, the read signal generator 26 starts oscillating, and a pulse signal of a constant period is generated on the output line 48. When the first pulse generated on the output line 48 is applied to the clock inputs of the D-type latches 22 and 24, the D-type latch 22 is connected to contacts 6, 8, 10, and 12 due to the rising edge of the pulse. Read and store the signal, output lines 50, 5
2, 54, 56 have contacts 6, 8, 10, respectively.
The signal obtained at 12 is generated. When the second pulse from the output line 48 is applied to the D-type latches 22 and 24, the second pulse is applied to the output lines 50, 52, 54, and 56 of the D-type latch 22 due to the rising edge of the pulse. Contacts 6, 8, 1 when
0,12 signals are generated. In addition, the D type latch 24
The signals obtained at the contacts 6, 8, 10, 12 when the first pulse is applied are generated on the output lines 58, 60, 62, 64 of.

On the other hand, when the binary counter 30 receives two pulses from the read signal generator 26, a signal that changes from L to H is obtained on its output line 66, and this signal is sent to the digital comparator 36 and the reset/reset flip circuit. Applied to the reset input of flipflop 28. As a result, the signal on the output line 46 changes from H to L, and the read signal generator 26 stops oscillating. At the same time, the digital comparator 32
is the output line 50, 52, applied to its input.
The signals on the output lines 54, 56 and the output lines 58, 60, 62, 64 are compared, and if they match, the signal on the output line 68 rises from L to H. This rising signal causes the timer circuit 34 to output lines 58, 60, 62, 6.
A signal for generating a necessary striking sound is synthesized using the striking signal No. 4, and the striking sound is generated from the speaker 30. This is the normal clicking sound generation operation.

However, due to dust or the like adhering to the sliding pattern 4 or due to bouncing that occurs during reading, the erroneous time-strike signal is temporarily lost to the contacts 6,
8, 10, 12, the D-type latch 22
output lines 50, 52, 54, 56 and D-type latch 2
Different timing signals are generated on the four output lines 58, 60, 62, and 64. In this case, a rising signal from L to H is obtained on the output line 70 of the digital comparator 32, and this rising signal is passed through the OR gate 45 to the reset flip-flop 2.
8 set input. As a result, the signal on the output line 46 of the reset flip-flop 28 goes from low to high, and the read signal generator 26
starts oscillation, and the timing signal is read from the sliding pattern 4. This operation is a D-type latch 2.
2 output lines 50, 52, 54, 56 and D
This is repeated until the signals on output lines 58, 60, 62, and 64 of mold latch 24 match.

As described above, according to this embodiment, even if a temporarily erroneous time striking signal is detected, the time striking signal is read again, and if they do not match, no time striking operation is performed. Therefore, it is possible to prevent the occurrence of tapping noises caused by dirt adhering to the sliding pattern 4, bouncing, etc. when the sliding pattern 4 is erroneously hit, as in the conventional case.

In this embodiment, a time striking sound generating device that generates a time signal sound on the hour has been described as a time striking function, but in the present invention, as a time striking function, for example,
It also includes a time signal function for minutes, 30 minutes, and 45 minutes. If the present invention is applied to this method, 15 minutes,
At the 30th and 45th minutes, the sliding pattern of the minute hand wheel is read twice for each of the above times in succession using a configuration similar to that of the present embodiment, and a time signal sound is generated only when these match. Therefore 15 minutes, 30 minutes, 45 minutes
It is possible to more reliably notify different time signals (for example, variable number of times, different melodies) depending on the minute.

As described above, according to the present invention, the hour signal is read twice from the sliding pattern provided on the hour hand wheel, and
By making the time strike occur only when they match, it is possible to provide a time strike sound generating device that does not cause time strike errors. Further, the structure according to the present invention is simple and can be easily put into practical use, and has great effects.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of the present invention. 2... Hour hand wheel, 4... Sliding pattern, 6, 8,
10, 12... Contact, 22, 24... D-type latch, 26... Read signal generator, 34... Timing circuit, 36... Speaker, 38... Wheel train contact configuration, 40... One shot circuit.

Claims (1)

[Scope of Claims] 1. A striking time detecting section for detecting the striking time, a striking signal detecting means for detecting a striking signal based on a signal from the striking time detecting section, and a striking signal detecting section for detecting a striking signal from the striking signal from the striking signal detecting section. A time-beat sound generating device that includes a time-beat sound generating means that generates a time-beat sound based on a time-beat signal; a read signal generator that generates a plurality of read signals;
a read control circuit that operates the read signal generator by a signal from the striking time detection section;
a storage circuit that reads and stores the clock signal from the clock signal generating means each time the read signal is generated; and a storage circuit that controls the operation of the read control circuit when the number of occurrences of the read signal reaches a certain number. When the counter to be stopped and the striking signal stored in the memory circuit all match, a signal is outputted to operate the ticking sound generating means, and when they do not match, a signal is outputted to operate the reading control circuit again. A striking sound generating device characterized by adding a digital comparator. 2. In claim 1, the hour striking signal detection means comprises a conductive pattern formed on the surface of the hour hand wheel to correspond to the number of hour strikes, and a contact slidably disposed on the surface of the hour hand wheel. A striking sound generating device consisting of.