JPS5961795A - Magnetic reversal type display clock - Google Patents

Abstract

PURPOSE:To obtain a magnetic reversal type display clock capable of accurately performing time correction, by holding the display of a magnetic reversal type display element under an erased state during the correction of time. CONSTITUTION:When a time correcting switch is manipulated, current supply to the current supply points X of the display coils COa1-COa4, COg1-COg2 of the magnetic reversal type display element of each figure is eliminated while a signal Y comes to a high level to turn transistors TR1-TR4 on and erasing coils COa'1-COa'4, COg'1-COg'4 are brought to a current supply state. Therefore, each magnetic reversal type display element is allowed to stand under an erased state during time correction and does not respond to a fast feed signal common with electronic display monitor while the generation of the error response of the magnetic reversal type display element slow in a response speed is prevented because of the requirement of erasing operation and a magnetic reversal type display clock capable of accurately performing time correction is obtained.

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to a magnetic reversal type display timepiece.

[Background technology]

Magnetic reversal type display watches display the time by magnetically reversing each segment of a segment type time display element.
In order to change the display content at regular intervals, it is necessary to erase the display before the digit whose display content should be changed and display the next display content, but the drive circuit requires a fluorescent display tube or light emitting diode. When using a general-purpose digital clock LSI that drives a segment type display element such as ), a separate reference signal generation circuit was added to the digital clock LSI.

These magnetically reversible display watches use a magnetically reversible display element in which the display plate is mechanically reversed by magnetic drive, and the response is slow, with the lowest digit being 1/2 The time could not be displayed. However, LSIs for digital watches are designed to be compatible with fluorescent display tubes and light emitting diodes, which respond quickly. The time display is fast forwarded by changing the 1 o'clock digit every time the clock changes, and in the case of display elements such as light emitting diodes, they accurately follow the segment drive signals of digital clock LSIs. The time can be adjusted while looking at the display, but in the case of a magnetic reversal type display element, it cannot follow the output of the digital clock LSI, and the segment drive signal and display do not correspond, resulting in an incorrect display, making it impossible to adjust the time. .

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic reversal type display timepiece that can accurately adjust the time.

[Disclosure of the invention]

The 41 comb reversible display clock of the present invention has a negative side as a display surface and the other side as a non-display surface, and can be reversed by energizing a coil.
A magnetic reversal type display section in which magnetic reversal type numeric display elements are arranged in a 7-segment numeric display format with magnetic reversal type display boards arranged corresponding to each hour digit, and a magnetic reversal type display section in which magnetic reversal type numeric display elements are arranged in a 7-segment numeric display format, and segments for each hour digit. A fully digital time 11 integrated circuit that outputs a drive signal, and a reference signal generation circuit that converts the 1 minute digit segment drive signal output from this digital clock integrated circuit into 7 and generates a reference pulse every minute. , a zero for detecting that the number displayed by each segment drive signal is zero based on the segment drive signals for each digit of 1-minute, 10 minutes, and 1 o'clock output from the digital clock integrated circuit; A coil application method that sets a first coil application time in response to a reference pulse outputted every minute from a detection circuit and the reference signal generation circuit, and sets a second coil application time with a rest time in between. A rest time setting circuit,
Mode change switch for switching between normal mode and time adjustment mode, 'f-7', turn this mode off 1 negative switch to jITl normal mode (when it is activated, 12 fl A self; during the coil application time of P 1 The coil is energized so that the non-display surface of the magnetic reversal type display board of ZUBE-C of the third minute digit magnetic reversal type display element faces forward, and the number displayed by the 1111 zero detection circuit t is zero. The coils are energized so that the non-display surfaces of all the magnetic reversal type numeric display elements of the digits immediately above the digit detected to be digits face forward.
During the application time of the second coil, the display portion of each magnetic reversal type numeric display element of each digit of the hour is displayed as the number of hours output from the digital watch integrated circuit. When the coils and coils are energized to face forward in accordance with the segment drive signal of each digit, and the mode switching switches , , and are switched to the time correction mode, the magnetic reversal type numeric display elements of each digit of the hour are energized. a magnetic reversal drive unit that routes the coils so that the top surface of all magnetic reversal type numeric display boards faces forward;
A monitor display section that displays hours and minutes according to segment drive signals for each digit of the hour outputted from the digital clock integrated circuit, and a time adjustment switch connected to the digital clock integrated circuit. be.

With this configuration, the time can be adjusted accurately using the monitor display, and the display of numbers on the magnetic reversible display can be prohibited when adjusting the time. This prevents mislabeling and makes it unsightly).

Examples will be described below. Before explaining the entire structure, a reference signal generation circuit used in a magnetic reversal display timepiece will be explained.

This reference signal generation circuit detects changes in the segment drive signal of the digital clock LSI.For example, in order to obtain a reference signal every minute, the digital clock LSI
It is created based on the segment drive signals from 0 to 9 of the least significant digit (1 minute digit) signal of the segment drive signal.

FIG. 1 shows a seven-segment display for the one-minute digit consisting of seven segments.
g indicates a segment drive signal that drives the corresponding segment. In such a 7-segment display, the numbers displayed on the display change sequentially every minute as shown in FIGS. 2(A) to 2(J). For example, when displaying "0", segment drive signals a~t°,
is rHJ. Also, when rlJ is displayed, segment drive signal b1. C engineering is rHJ. When displaying ``2'' to ``9'', please refer to Figure 2 (
The segment drive signals shown in C) to (J) are at "H" level.

As shown in FIG. 3, the first reference signal generation circuit that detects changes in the segment drive signals a□ to g, which sequentially change every minute with a 10-minute cycle, detects changes in the segment drive signals R to G, as shown in FIG. As shown in FIG. 4, the output A becomes f''HJ only during the period when the 7-segment display is displaying ``0'' by taking the logical product of ``f'' and ``1'' to ``1''. An anime game in which the outputs B to J are "H" only during the period when "9" is displayed) AN to N9 and the outputs A to J of the AND gate 8N and AN9 are each delayed for a certain period of time. Delay circuits DLo-DL, waveform shaping circuits H5o-H59 that shape the outputs of delay circuits L1L to L)Lo, and AND gates ANo to Δ
AND gate ANo-AN is created by taking the logical product of the outputs A-J of N9 and the outputs of waveform shaping circuits H8o-H89.
.

The outputs A'~ are synchronized with the rising edge of the outputs A-J, respectively.
An OR game that generates a reference signal K every minute by ORing AND gates ANo' to AN9' that generate J' and outputs A' to J' of these AND gates AN' to AN9'.
It consists of OR engineering. Note that the delay circuit LL.

~DL9, waveform shaping circuit H8o-H89, and AND gate AN. '-AN9' is AND gate ANo-AN9
A differentiating circuit is configured to differentiate the outputs A to J of.

The second reference signal generation circuit includes 1. for digital watches. , S.I.
For example, segment drive signal a of 1 minute digit.

When we look at the changes in e mode over 10 minutes (changes from O to 9), as shown in Figure 5, at least one of the segment drive signals a and e always rises or rises every minute. Focusing on the occurrence of a falling edge, a reference signal with a cycle of 1 minute is created by detecting the rising edge and falling edge of the segment drive signals n and e□.

Specifically, this second reference signal generation circuit generates segment drive signals 8. and 8.2, as shown in FIGS. 6 and 7.
The delay circuit 1) L construction. through the waveform shaping circuit H8.
Waveform shaping circuit H3 construction by passing through 1o. Output a from
Then, by exclusive ORing the segment drive signal 8 and the output n' with an exclusive OR gate, an output a' synchronized with the rising and falling edges of the segment drive signal a1 is obtained, and similarly, By passing the segment drive signal e through the delay circuit DL□, and further through the waveform shaping circuit ■ (S), the waveform shaping circuit H
Outputs e and ' are obtained from the 5th circuit, and the exclusive OR gate EX2 performs an exclusive OR of the segment drive signal e and the output e' to generate an output synchronized with the rising and falling edges of the segment drive signal e. e-engineer'
By calculating the logical sum of the outputs a' and e' at the OR gate OR2, a reference signal 0 having a period of 1 minute is obtained from the OR gate OR2.

Next, a 24-hour magnetic reversal display clock incorporating this second reference signal generation circuit is shown in Figure 8 (Al-(J)).
, @ This will be explained based on FIGS. 9 and 10.

As shown in FIG. 8(A) to (■), this magnetic reversal display timepiece includes a display drive circuit section 1, a reference signal generation circuit section N, a coil application/rest time setting circuit section (■), and a digital clock. It is composed of an LSI for use, a display element V for monitoring, a "0" detection circuit section (2), and a magnetic reversal type display element (not shown).

In the display and drive circuit section I,
and C(ζ,, i(Y, □ is the coil of the magnetic reversal display element of the 1 minute digit, COa, -(:082 and Cα',
□-C(Y, , is the same <10 minute digit coil, co
-co and CC) a3-C□', 3 is a3
g3 Similarly, the coils in the 1 o'clock digit, C0a4-C (1, 4 and C (44<徨, are the coils in the 10 o'clock digit. 1'R~TR4 are the coils CO'a1-C duck 0. C.C.
Office<(Y, , CO',.

-r: ty, , c (manufactured by Ya4rio). Transistors that commonly control the energization to TRa□ to TR, 1 are transistors that individually control the energization to coils CC) a to C08□, Segment drive signals 3□ to g of the digital clock LSI 1%' are input to the base. ′
]To Ra2-Tl inertia, is the coil (0□2~C(,1,,
This is a transistor that individually energizes fL'll ij(], and the segment drive signals R3 to g2 are input to the base. J'R-TR is the θ to the coil coa3
, 3 g3 These are transistors that individually control energization, and segment drive signals A3 to g3 are input to their bases. TRa4~T
I set individually controls the energization to coil C: O<O g4
rc4 g, 4 transistor with segment drive signal ++ at the base
n4-g4 is input. FF, ~FF4 are flip-flops, AN□□~AN□3 are AND gates, OR,
~OI? 5 is the or gate.

The reference signal generation circuit section (2) has the same configuration as shown in FIG. 6, and the segment drive signals a and e of the digital LSI (2) are manually operated.

In the coil application/rest time setting circuit section m, Z is a power-on clear circuit, FF is a flip-flop, O8C
is astable multivibrator, DFF and I)FF
2 is [) flip 70 knob, AN□4 is and gate,
t) R6,OR, is OR gate, NOo is Noah gate,
IN□ is an inverter, TR5 is a transistor, SW engineering.

SW2 is a mode changeover switch.

The digital clock LSI■ is a general-purpose one, and outputs segment drive signals for each digit from a to g, 82 to g2.
, 83~g3. Output Beng4~g4. sw3゜SW
4 is a time setting switch.

In the "O" detection circuit ■, AN, ~ΔN2o is an AND gate, IN2 to IN4 are inverters, and DL, ~D
L engineer.

is a delay circuit, IN5 to IN7 are inverters for waveform shaping, and segment drive signals d□ to d3. of the digital clock LSI■. g-g3 are input.

Next, the operation of this magnetic reversal type display timepiece will be explained with reference to FIGS. 9 and 10.

When the reference signal generation circuit section M outputs the reference signal 0 of the first source one minute after the power is turned on and the output PC momentarily becomes "H" from the power-on clear circuit Z, The output of the flip-flop FF becomes "L", the astable multivibrator O3C starts oscillating, and the output Cl0(i
lc is generated, and this output C1oCk is input to the D flip-flop DFF, DFF2. In this case, the output C1ock has an "H" period of T and an "L" period of T2. This T is the coil application time, and T
2 is the rest time.

D flip-flop DFF, DFF2 has the above output C1
By adding oCk, the outputs Q and Q are respectively
2. After the second pulse is output as the output C1ock, the reset pulse a is output from the NOR gate NO3, the flip-flop FF is reset via the OR gate OR6, and the astable multivibrator O8C is output. The output is stopped and the flip-flops FF2 to FF4 are also reset.

In other words, when the reference signal 0 at the first source is generated, a pulse b with a pulse width T is output from the AND gate AN, and the transistor TR4 of the 1 minute digit is turned on, and 1 minute is displayed for the construction period T. One coil C(ya, to C()m) of each segment of the magnetic reversal type display element for 2000 is energized in common, and the display of the 1 minute digit is erased.Then, after erasing, a period of T2 has elapsed. Then, the output direction of the D flip-flop DFF2 becomes "L", and then the T-transistor TR5 is turned on, power is supplied to the X point, and the segment drive signal a of the 1 minute digit of the digital clock LSIIV is The segment drive signal a~f□ of ~g becomes I''HJ, transistors TRa□~TR,□ are turned on, and the coil C0al-C that drives the 1 minute digit segment of the magnetic reversal type display element is turned on. (energized to 1°, 1
The minute digit is displayed as "0".

Further, 0 hour OO minute should be displayed one minute after the power-on clear, and the 10 minute digit and 1 o'clock digit should also be erased and displayed.

Here, the "O" detection circuit (2) will be explained with reference to FIG. Segment drive signal d~d3゜g~g3
If you check the voltage level for each displayed number, you will see the figure below.

Therefore, the segment drive signals d~d3 and the inverted outputs of the segment drive signals g~g3 are connected to AND gates AN~AN. When you pass each through the
1-Output 1 of AN□5 to AN□7! -%-e are as shown in the figure, and gate AN construction.

~AN, respectively, generate pulses C' to C' when the display is "0" as shown in the figure. That is,
The output e becomes "H" when the 1st minute digit is "O", the output d becomes "I(" when the 10th minute digit is "O", and the output C becomes "0" when the 10th digit is "0"). ”, it becomes “H” and the output (
Pulses C' to e' are obtained by differentiating i to e.

Immediately after the power-on clear is 0:00, the outputs of the flip-flops FF2 to FF are "H" at this time. Therefore, after 1 minute has passed after power-on clear, pulse b of pulse width T is output from AND gate AN 4.
When is output, as mentioned above, the transistor TR4 is turned on, and the AND gate AN -AN is turned on, and the transistors TR 11 13 to 'rR3 are also turned on. Coil C<ya2-C, (Y
,, .

CCy'B, 3-(: duck, , C view. (0 member) is energized, and the 10 o'clock, 1 o'clock, and 10 minute digit displays are respectively erased.

After that, when the output G2 of I) flip-flop r) FF2 becomes "15", the transistor TR5 turns on and
Power is supplied to the point, and the segment drive signal a of each digit is
Transistors 'I'R~TR,]'R~'rR, TRa3~ by f~f, a2~f2, *3~f3
TI? , is on and al fl a
2 f2, the coil co - CO of each digit,
C0a2-(sword, , C0a3al fl-'-cOf3 is energized, and the magnetic reversal type display element displays 0:00 minutes. However, the 10:00 digit remains erased because no segment drive signal is input. There is even.

Thereafter, each time the reference signal 0 is input from the reference signal generation circuit 1, the display of the 1-minute digits changes sequentially by the same operation. However, the 1 o'clock and 10 minute digits remain unchanged.

Next, when the reference signal 0 is input from the reference signal generation circuit history while the display is 0:09, the 1 minute digit operates in the same way as above, changing from 1゛9'' to ``0''. Changes to

In addition, when the 1st digit becomes "0", a pulse e' is generated from the "0" detection circuit (2), and as a result, the output of the flip-flop FF4 becomes r'I (J, and the ant game) A
N, is turned on, and the 10 minute digit display changes from "O" to "1".
”.

Next, when the reference signal 0 is input at the part where the display is 0:59, the 1 minute digit changes from "9" to "0", and the display changes to "0". As a result, pulses d' and e' are generated from the "0" detection circuit ■, the outputs of the flip-flops Fl' and FF3 become "il, 1, and the AND gates 8N, , AN, are turned on, and 10 The minute digit display changes to "0" and the 1 o'clock digit display changes to "1-1".
becomes.

When changing from 9:59 to 10:00 and 19:00
If there is a change from 0:59 to 20:00OO minutes,
"Pulses C' to e' are generated from the detection circuit (2), and the display is changed in the same manner.

The same applies when changing from 23:59 to 0:00.

When adjusting the time, press the mode switch, Sochi SW,
Set S town to time adjustment mode and prohibit power supply to point X.
At the same time, by generating the output b' of "[■"] from the inverter N, only the display of the magnetic reversal type display element is erased, and the time setting switch sw3. The time is set while looking at the monitor display element V using sw4. Therefore, during the time Th1M adjustment, segment drive signals 81~gl ``2~''2' of digital clock LSI■
"3-g3" and "a-g<" change, but the display of the magnetic reversal display element remains erased.

This magnetic reversal type display timepiece can maintain the display of the magnetic reversal type display element in an erased state while setting the time, so there is no possibility of erroneous display. In other words, the followability of the reversing mechanism of the magnetic reversal type display element is extremely poor compared to fluorescent display tubes and light emitting diodes, and the fast forward signal for time adjustment from a general-purpose digital clock LSI cannot be followed at all, resulting in incorrect display. There was a problem in which the time could not be adjusted by doing this, but this problem can be resolved.

Note that it can also be configured using the reference signal generation circuit shown in FIG.

〔Effect of the invention〕

According to the magnetic reversal type display timepiece of the present invention, the time can be corrected accurately, and the unsightliness caused by incorrect display on the magnetic reversal type display section can be eliminated.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of the segment display element, Figure 2 cA) ~
U) is an explanatory diagram showing the display states from O to 9, FIG. 3 is a circuit diagram of the first reference signal generation circuit, m 4 +M is a waveform diagram of each part, and FIG. 5 is the second reference signal generation circuit. A waveform diagram for explaining the operating principle of the circuit, Fig. 6 is a circuit diagram of the second reference signal generation circuit, Fig. 7 is a waveform diagram of each part thereof, and Fig. 8) to
(D) is a circuit diagram of a magnetic reversal type display timepiece, and Figures 9 and 10 are waveform diagrams of each part thereof. 1... Display drive circuit section, ■... Reference signal generation circuit section, ■... Coil application/rest time setting circuit, section, ■...
・LSI for digital clock, ■...display element for monitor,
■...“0” detection circuit section fll 917b+ @, / /c. 1 5'('> 1 Figure No. 211 1 1 el, bl; f, - 3rd L: eILHLHL HLHLH ヱ7S5 1i"

Claims (1)

[Claims] A magnetic reversal type numeric display element consisting of seven magnetic reversible display plates, each of which has one side as a display surface and the other side as a non-display surface and can be reversed by energizing a coil, arranged in a 7-segment number display format. A magnetically reversible display section arranged corresponding to each digit of the hour, an integrated circuit for a digital clock that outputs segment drive signals for each digit of the hour, and an integrated circuit for a digital clock that outputs segment drive signals for each digit of the hour. a reference signal generation circuit that generates a reference pulse every minute based on the digit segment drive signal; and a minute output from the digital clock integrated circuit. A zero detection circuit that detects that the number displayed by each segment drive signal is zero based on the segment drive signals for each digit of 10 minutes and 1 o'clock, and an output every minute from the reference signal generation circuit. A coil application/rest time setting circuit that sets a first coil application time in response to a reference pulse generated and sets a second coil application time in between the rest time, and switches between a normal mode and a time correction mode. a mode changeover switch, and a non-display surface of all the magnetic reversal type display boards of the magnetic reversal type numeric display element of the 1 minute digit during the first coil application time when the mode changeover switch is changed to the normal mode; The coils are energized so that the number facing forward, and all the magnetic reversal type numeric display boards of the magnetic reversal type numeric display elements of the digit immediately above the digit detected as zero by the zero detection circuit are The coil is energized so that the non-display surface faces forward, and during the second coil application time, the display surface of each magnetic reversal type numeric display board of the magnetic reversal type numeric display element for each digit of the hour and minute is connected to the digital clock. The coil is energized so as to face forward according to the segment drive signal for each digit of the hour output from the integrated circuit, and when the mode selector switch is switched to the time correction mode, the magnetic reversal of each digit of the hour occurs. A magnetic reversal drive unit that energizes a coil so that the non-display surface of all magnetic reversal type numeric display boards of the digital clock numeric display element faces forward, and a segment drive for each hour digit output from the digital clock integrated circuit. A magnetic reversal type display timepiece comprising a monitor display section that displays hours and minutes according to a signal, and a time adjustment switch connected to the digital timepiece integrated circuit.