JPS6253073B2 - - Google Patents

Description

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

For example, there is a device in which a patterned electrode representing a code for each hour is formed on a disk, a contact piece is slid on this electrode to detect the time, and the time is reported based on the code output. In this timepiece, the minute hand cam closes a contact point every hour on the hour, and the time signal is started by this contact signal. However, this contact signal contains a lot of chattering, and especially when the contact is turned off, since the contact is gradually opened, chattering may occur for several seconds or more. Therefore, configuring a chattering removal circuit within a timepiece integrated circuit cannot completely eliminate the above-mentioned chattering, and it is necessary to configure a chattering removal circuit by adding an external capacitor and a resistor. The disadvantage of this case is that a capacitor and resistor must be externally connected, and the time constant is large, so when the hand quickly passes the hour when the hand is turned quickly, the above contact signal becomes the hour input. In some cases, the incident was not recognized and the report was not made.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a timepiece that does not require an external chattering removal circuit and that can normally notify the time even when the hands are turned quickly.

An embodiment of the present invention will be described below based on the drawings. In FIG. 1, a plurality of electrodes ES ₁ to ES ₄ and EC ₁ to EC ₃ are formed in two concentric rows on a disk D. A is a contact piece that rotates in conjunction with an hour hand (not shown), and is fixed to a clock shaft B, which is a moving device. Contact a ₁ of contact piece A slides on the outer electrode, and contact a ₂ slides on the inner electrode. Through this sliding, conduction is established between the four types of electrodes ES ₁ to _{ES 4} on the outside and the three types of electrodes EC ₁ to EC ₃ on the inside, and the combinations are different at the 1 to 12 o'clock positions, respectively. By identifying this combination, the display position of the hour hand can be detected. Each electrode is formed to extend beyond the hour position so that this detection can be performed well before the hour.

Figure 2 shows _the circuit configuration that performs this detection and reports _{the time} . Three systems of pulses whose phases are sequentially shifted are generated and supplied to lead terminals _C1 to _C3 via buffers _F1 to _F3 , respectively. Lead terminal C ₁ ~
C ₃ is connected to the electrodes EC ₁ to EC ₃ in FIG. 1, respectively.

In addition, lead terminals S ₁ to _{S 4} are connected to electrodes ES _{1 to ES 4} , respectively.
ES ₄ , the outputs from which are fed to the output circuit EN ₁ via buffers F ₄ to F ₇ . The output circuit EN ₁ consists of an encoder, etc., and outputs the pulses from the pulse generation circuit PG ₁ and the buffer F ₄ ~
The pulse from _F7 produces a 4-bit binary code output. This specific configuration will be described later. L ₁ and L ₂ are latch circuits, and CM is a comparison circuit. When the contents of the latch circuits L ₁ and L ₂ do not match, the output becomes "1". M is an O detection circuit whose output becomes "0" when the output of the latch circuit _L1 is "0". N is a time signal circuit which generates a time signal sound a number of times according to the contents of the latch circuit _L2 . K is a control circuit that slightly delays the output of the gate circuit _G2 . F is a flip-flop circuit constituting a preparation circuit, G ₁ and G ₂ are gate circuits, and gate circuit G ₂
A contact signal from a switch S, which is closed every hour on the hour in conjunction with the minute hand cam, is supplied to the input terminal t.

Figure 3 shows an example of the output circuit EN ₁ in Figure 2, where G ₃ to _{G 18} are gate circuits.
A 4-bit code output is generated from the outputs of _G15 to _G18 .

Next, the operation will be explained. Contact piece A in Figure 1
rotates in conjunction with the hour hand from the state shown in the figure, and at about 2:15, contacts a ₁ and a ₂ are connected to the electrodes.
Elastic contact with ES ₂ and EC ₁ . Therefore, the terminal in Figure 2
Contact piece A establishes continuity between S ₂ and C ₁ . Therefore, when a pulse is generated from terminal P ₁ of pulse generation circuit PG ₁ , it is sent to the output circuit via buffers F ₁ and F ₅ .
_N1 , and the outputs of buffers _F4 to _F7 at this time are each (0100). Also, even if pulses are generated from terminals P ₂ and P ₃ , these are buffers F ₄ to F ₇
is not transmitted, and each output is held at "1".
Each of the above pulses is generated repeatedly, and the contact piece A becomes the electrode.
Each of the above outputs occurs repeatedly while in contact with ES ₂ and EC ₁ . This output produces the following output from the output circuit EN ₁ . The pulse from the terminal _P1 is supplied to the gate circuits _G11 to _G14 in FIG. 3, and is also supplied to the gate circuits _G4 , _G8 , _G12 via the buffer _F5
supplied to Therefore, the output of the gate circuit _G12 becomes "1", and the outputs of the other gate circuits are held at "0". Therefore, the 2 o'clock code output (0100) is generated from the gate circuits G ₁₅ to G ₁₈ . Also the terminal
When pulses are generated from P ₂ and P ₃ , the buffer F ₄ ~
Since the outputs of _F7 are all held at "1", the outputs of gate circuits _G3 to _G14 are all "0", and therefore the outputs of gate circuits _G15 to _G18 are also all "0". is maintained.

In this way, each time a pulse is generated from terminals P ₁ , P ₂ , P ₃ , the output from output circuit EN ₁ is (0100),
(0000) and (0000) are generated and supplied to the latch circuit _L1 . This latch circuit _L1 has a pulse generation circuit _PG1.
A narrow pulse is supplied from the terminal P ₄ of the terminal P 4 during the generation of pulses from the terminals P ₁ , P ₂ , and P ₃ . Therefore, the output of the output circuit EN ₁ is latched in the latch circuit L ₁ every time a pulse is generated from the terminals P ₁ , P ₂ , P ₃ . When the 2 o'clock code output (0100) is latched in the latch circuit _L1 , the output of the latch circuit _L2 (the code output at 1 o'clock, which is the previous hour) is stored by the comparator circuit CM. ) (1000), and since they do not match, the output becomes "1". Further, the output of the 0 detection circuit M also becomes "1" and the gate circuit _G1 is opened. A pulse that is out of phase with the pulse from _the terminal _P4 is supplied to the gate circuit G1 from the terminal _P5 of the pulse generating circuit PG, and this pulse passes through the gate circuit _G1 . This pulse causes the 2 o'clock code output of latch circuit _L1 to be latched to latch circuit _L2 , and flip-flop circuit F is set to become ready for time reporting.

Note that if (0000) is latched in the latch circuit _L1 when pulses are generated from the terminals _P2 and _P3 , the output of the 0 detection circuit M becomes "0" and the gate circuit _G1 is closed, so the latch circuit L ₂ is not latched.

Also, once the 2 o'clock code output is latched in the latch circuit _L2 , when the 2 o'clock code output is latched in the latch circuit _L1 , the two match, so the output of the comparator circuit CM becomes "0". Nari gate circuit G ₁
No pulse is generated. i.e. latch circuit
Once the 2 o'clock code output is latched to _L2 , it does not change until the next 3 o'clock code output is latched to the latch circuit _L1 .

As described above, about 15 minutes before the hour, the hour code output is latched in the latch circuit _L2 , and the gate circuit _G2 is opened to become ready for time reporting.

Then, when the hour came, the switch S was turned on by the minute hand cam.
When a contact signal is supplied to the terminal t as shown in FIG. 4B, it is supplied to the time signal circuit N via the gate circuit _G2 , and the hour is announced. With a slight delay due to the pulse from the gate circuit _G2 , the control circuit K generates the pulse shown in FIG. 4C to reset the flip-flop circuit F as shown in FIG. 4A. Therefore, even if chattering occurs in the contact signal from terminal t, it cannot pass through gate circuit _G2 and is sent to time signal circuit N.
will not malfunction. The switch S, which is closed by the minute hand cam, is gradually opened after about 10 minutes, and especially at this time, intense chattering occurs as shown in Figure 4B, but malfunctions caused by this can be completely eliminated. It is.

Although chattering also occurs between the contact piece A and the electrode in FIG. 1, this does not cause any adverse effects. For example, due to chattering when the contacts a ₁ and a ₂ gradually come into contact with the electrodes ES ₂ and EC ₁ , the terminals S ₂ and C ₁ in FIG. 2 become conductive or non-conductive. If a pulse is generated from the terminal _P4 of the pulse generating circuit _PG1 in the conductive state, the code output at 2 o'clock will be latched by the latch circuit _L1 and no problem will occur. Also, in the non-conducting state, (0000) is a latch circuit.
Since it is latched to _L1 , no malfunction will occur in this case either.

As described above, as the contact piece A rotates, the outer electrodes ES ₁ , ES ₄ and the inner electrodes EC ₁ to EC ₃ are electrically connected, and the contacts of the matrix shown in the second figure are sequentially closed. To go. As a result, the output circuit _EN1 sequentially generates a code output for each time, and based on this, the time signal circuit N performs the time signal a number of times corresponding to the displayed time.

Figure 5 shows an example in which six types of electrodes ES ₅ to _{ES 10} are formed on the outside, and two types of electrodes EC ₄ and EC ₅ are formed on the inside, and as in the above, different electrodes are formed at the 1 to 12 o'clock positions. Conductivity is established between the electrodes of the combination, and each time is detected.

In this case, as shown in Figure 6, the pulse generation circuit
Generates two systems of out-of-phase pulses from PG ₂ ,
It is supplied to lead terminals C ₄ and C ₅ via buffers F ₈ and F ₉ . Lead terminals C ₄ and C ₅ are electrodes EC 4 and EC ₄ , respectively.
It is connected to EC ₅ . Also electrodes ES ₅ ~ _{ES 10}
are connected to lead terminals S ₅ to S ₁₀ , respectively, and these terminals S ₅ to _{S 10} are connected to terminals F 10 to F ₁₀ respectively.
It is connected to the input side of F ₁₅ . Batsuhua F ₁₀ ~ _{F 15}
The output of is supplied to the output circuit EN ₂ , and the other configuration is the same as above.

The operation is similar to the above example, and the intersection points of the matrix made up of each electrode are sequentially closed by the contact piece A, and the pulses from the buffers F ₁₀ to _{F 15} and the pulse from the pulse generation circuit PG ₂ are output. A code output representing each hour is generated from the circuit EN ₂ , and the time is announced based on this code output.

In the above embodiment, the electrode is fixed and the contact piece is rotated, but the contact piece may be fixed and the electrode side is rotated.

As described above, according to the present invention, a change in the code output at the hour is detected, the switch is set to the time alarm preparation state, and the time is notified by the contact signal of the switch that operates at the hour, and the time alarm preparation output is stopped. So,
It is not affected by the chattering of the switch, eliminates the need for an external chattering removal circuit, and allows normal time reporting even if the hands are turned quickly.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a logic circuit diagram showing an example of the circuit configuration, and FIG.
The figure is a logic circuit diagram showing a part of figure 2 in detail, figure 4 is a time chart for explaining the operation, figure 5 is a front view showing another embodiment, and figure 6 is figure 5. FIG. 2 is a logic circuit diagram showing an example of a circuit configuration in the example of FIG. ES ₁ ~ ES ₄ , EC ₁ ~ EC ₃ ... Electrode, A ... Contact,
B...Moving device, PG ₁ ...Pulse generation circuit, EN ₁
...Output circuit, _L1 , _L2 ...Latch circuit, CM...
Comparison circuit, G ₁ , G ₂ ... gate circuit, F ... preparation circuit, K ... control circuit, N ... time signal circuit, ES ₅ -
ES ₁₀ , EC ₄ , E ₅ ... Electrode, PG ₂ ... Pulse generation circuit, EN ₂ ... Output circuit.

Claims (1)

[Claims] 1. An output generator that outputs a code at the hour from a predetermined time before the hour, a detection circuit that detects a change in the code output from this output generator, and a code after the change is detected by the output of the detection circuit. A storage circuit that stores the output, a preparation circuit that generates a time signal preparation output based on the output of the detection circuit, a switch that operates every hour on the hour in conjunction with the minute hand axis, and a contact signal of this switch and the time signal A time-reporting clock comprising a time-signaling circuit that notifies the time by a cooperative output with a preparation output, and a control circuit which stops the time-signal preparation output by the cooperative output.