JPH0862356A - Electronic clock - Google Patents
Electronic clockInfo
- Publication number
- JPH0862356A JPH0862356A JP6199270A JP19927094A JPH0862356A JP H0862356 A JPH0862356 A JP H0862356A JP 6199270 A JP6199270 A JP 6199270A JP 19927094 A JP19927094 A JP 19927094A JP H0862356 A JPH0862356 A JP H0862356A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- alternating current
- signal
- input
- frequency divider
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/10—Arrangements for supplying back-up power
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
(57)【要約】
【目的】 商用交流で動作する電気時計における停電時
の問題を解消すること。
【構成】 商用交流の周波数およびクリスタル発振器４
１の周波数をそれぞれ、第１の分周器３１、第２の分周
器４３で分周し、分周した周波数信号を、切換器３３で
択一的に基準分周器３５に出力し、基準分周器３５が分
周した基準周波数信号に同期して作動する計時・表示部
１１を備えた電子時計であって、さらに、上記切換器３
３に、商用交流が入力しているときには上記第１の分周
器３１と基準分周器３５とを接続させ、入力していない
ときには上記第２の分周器４３と基準分周器３５とを接
続させるＡＣ検出器５１を備えたこと。
(57) [Summary] [Purpose] To solve the problem at the time of a power failure in an electric timepiece that operates on commercial AC. [Composition] Commercial AC frequency and crystal oscillator 4
The frequency of 1 is divided by the first frequency divider 31 and the second frequency divider 43, respectively, and the divided frequency signal is selectively output to the reference frequency divider 35 by the switch 33. An electronic timepiece having a timekeeping / display unit 11 that operates in synchronization with a reference frequency signal obtained by dividing the reference frequency divider 35, further comprising the switching unit 3
3, when the commercial AC is input, the first frequency divider 31 and the reference frequency divider 35 are connected, and when not input, the second frequency divider 43 and the reference frequency divider 35 are connected. The AC detector 51 for connecting the
Description
【０００１】[0001]
【産業上の利用分野】本発明は、常時は商用交流に同期
して作動し、停電など商用交流に異常があったときには
水晶発振器などの出力に同期して作動する時計に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece which always operates in synchronization with a commercial alternating current and operates in synchronization with an output of a crystal oscillator or the like when there is an abnormality in the commercial alternating current such as a power failure.
【０００２】[0002]
【従来技術およびその問題点】商用交流に同期して作動
する電気時計の精度は、商用交流の周波数精度に依存す
る。一般に商用交流の周波数は、数カ月、数年という長
期的単位では比較的正確である。しかし、この種の電気
時計は、停電などにより電力供給が遮断されると、遮断
されている間は計時動作が停止するので、電力供給が再
開されて計時動作を再開しても、電力供給が遮断されて
いた時間だけ遅れてしまう。そのため、かかる場合に
は、通常、手動で時間合わせを行なわなければならなか
った。しかも、停電したことを知っていれば、時間合わ
せを行なう面倒があるだけであるが、知らなかった場
合、あるいは遅れに気付かなかった場合には種々の問題
を生じる。一方、クリスタル発振子を利用したクオーツ
時計は、短期的に見れば正確であり、電池を使用してい
れば停電などの問題は生じないが、長期的にみれば誤差
が積算されて大きな狂いを生じてしまう。2. Description of the Related Art The accuracy of an electric timepiece that operates in synchronism with commercial AC depends on the frequency accuracy of commercial AC. Generally, the frequency of commercial alternating current is relatively accurate in the long-term unit of months or years. However, when the power supply is cut off due to a power failure or the like, this kind of electric timepiece stops the timekeeping operation during the interruption, so even if the power supply is restarted and the timekeeping operation is restarted It will be delayed by the time that was blocked. Therefore, in such a case, the time usually has to be adjusted manually. Moreover, if the user knows that the power outage has occurred, it is only troublesome to adjust the time, but if he does not know it or if he does not notice the delay, various problems occur. On the other hand, a quartz clock that uses a crystal oscillator is accurate in the short term, and problems such as power failure will not occur if batteries are used, but in the long term, errors will be accumulated and a big deviation will occur. Will occur.
【０００３】[0003]
【発明の目的】本発明は、上記従来の時計の問題に鑑み
てなされたもので、商用交流で動作する電気時計におけ
る停電時の問題を解消することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the conventional timepiece, and an object of the present invention is to solve the problem at the time of power failure in an electric timepiece operated by commercial AC.
【０００４】[0004]
【発明の概要】この目的を達成する本発明は、基準周波
数信号に同期して作動する時計機構を有する電子時計で
あって、商用交流を入力する入力手段；所定周波数の信
号を出力する発振手段；上記商用交流および所定周波数
の信号を上記基準周波数信号に変換する手段；上記商用
交流が入力されているか否かを検出する検出手段；およ
び、この検出手段が上記商用交流が入力されていること
を検出しているときには上記商用交流を変換した基準周
波数信号に同期して上記時計機構を作動させ、上記検出
手段が上記商用交流が入力されていないことを検出して
いるときには上記所定周波数を変換して基準周波数信号
に同期して上記時計機構を作動させる切換え手段；を備
えたことに特徴を有する。SUMMARY OF THE INVENTION The present invention, which achieves this object, is an electronic timepiece having a timepiece mechanism which operates in synchronization with a reference frequency signal, wherein input means for inputting commercial alternating current; oscillation means for outputting a signal of a predetermined frequency. A means for converting the commercial alternating current and a signal of a predetermined frequency into the reference frequency signal; a detecting means for detecting whether or not the commercial alternating current is input; and the detecting means for receiving the commercial alternating current Is detected, the clock mechanism is operated in synchronization with the reference frequency signal obtained by converting the commercial alternating current, and the predetermined frequency is converted when the detecting means detects that the commercial alternating current is not input. And a switching means for operating the timepiece mechanism in synchronization with the reference frequency signal.
【０００５】[0005]
【実施例】以下図示実施例に基づいて本発明を説明す
る。図１は、本発明を適用した時計の主要回路構成を示
すブロック図である。本実施例の電子時計は、源振部と
して、外部から入力される商用交流および内蔵したクリ
スタル発振器を有していることに特徴を有する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a block diagram showing the main circuit configuration of a timepiece to which the present invention is applied. The electronic timepiece of this embodiment is characterized in that it has a commercial AC input from the outside and a built-in crystal oscillator as the source oscillation unit.
【０００６】交流の源振部は、商用交流、例えば家庭用
の５０または６０ＨＺ、１００Ｖの交流である。商用交
流には、壁などに埋め込まれたコンセントに差し込まれ
るプラグ２１を介して接続され、入力した交流を変圧器
２３で数ボルトの低圧の交流に降圧する。そして降圧し
た交流の一部は、整流器２５により直流に整流され、電
気時計の各電子回路の電源として供給される。さらにこ
の直流により、充電部材としての充電池２７が充電され
る。充電池２７は停電時のバックアップ用電源であっ
て、ニッケルカドミウム電池、ニッケル水素電池などの
電池や、大容量のコンデンサを利用できる。また、乾電
池、リチウム電池などの一次電池を使用してもよい。The alternating current source is commercial alternating current, for example, 50 or 60 HZ, 100 V alternating current for household use. The commercial AC is connected through a plug 21 inserted into an outlet embedded in a wall or the like, and the input AC is stepped down by a transformer 23 to a low voltage of several volts. Then, a part of the stepped-down AC is rectified into a DC by the rectifier 25 and supplied as a power source for each electronic circuit of the electric timepiece. Furthermore, the direct current charges the rechargeable battery 27 as a charging member. The rechargeable battery 27 is a backup power supply at the time of a power failure, and a battery such as a nickel-cadmium battery or a nickel-hydrogen battery or a large-capacity capacitor can be used. Alternatively, a primary battery such as a dry battery or a lithium battery may be used.
【０００７】変圧器２３から出力された低圧の交流は、
第１の分倍周手段としての第１の分周器３１に入力さ
れ、所定周波数に分周される。第１の分周器３１は、切
換器３３を介して基準分周器３５に接続されているの
で、分周された交流は、切換器３３を介して基準分周器
３５に入力され、基準分周器３５でさらに分周されて基
準周波数信号が生成され、時計機構としての計時・表示
部１１に入力される。The low-voltage alternating current output from the transformer 23 is
It is input to the first frequency divider 31 as the first frequency dividing means, and frequency-divided into a predetermined frequency. Since the first frequency divider 31 is connected to the reference frequency divider 35 via the switching unit 33, the frequency-divided alternating current is input to the reference frequency divider 35 via the switching unit 33, and the reference frequency divider 35 is input. The frequency is further divided by the frequency divider 35 to generate a reference frequency signal, which is input to the timekeeping / display unit 11 as a timepiece mechanism.
【０００８】計時・表示部１１は、この基準周波数信号
に同期して、時分秒あるいは年月日をカウントし、時分
秒等を図示しないアナログ表示器あるいはディジタル表
示器に表示する。計時・表示部１１は、公知の電気時計
を利用できる。The timekeeping / display unit 11 counts hours, minutes and seconds in synchronization with the reference frequency signal and displays the hours, minutes and seconds on an analog display or a digital display (not shown). A publicly known electric clock can be used for the timekeeping / display unit 11.
【０００９】また、第１の分周器３１は、入力周波数に
かかわらず出力周波数を同一に保つ機能を備えている。
本実施例では、我国の商用周波数である５０ＨＺおよび
６０ＨＺに対応すべく、50/60HZ 選択部材３７を備えて
いる。この実施例の50/60HZ選択部材３７は外部操作を
受けて動作するが、入力周波数を検出して自動的に選択
する自動調整回路を使用してもよい。The first frequency divider 31 has a function of keeping the output frequency the same regardless of the input frequency.
In this embodiment, a 50 / 60HZ selection member 37 is provided in order to support 50HZ and 60HZ which are commercial frequencies in Japan. Although the 50 / 60HZ selection member 37 of this embodiment operates by receiving an external operation, an automatic adjustment circuit that detects the input frequency and automatically selects it may be used.
【００１０】他方の源振部であるクリスタル発振器４１
は、通常は、整流器２５から出力される直流により作動
して、所定周波数の信号を出力している。クリスタル発
振器４１が出力する信号は、第２の分倍周手段としての
第２の分周器４３により第１の分周器３１の出力と同一
周波数に分周されて、切換器３３に入力される。The crystal oscillator 41 which is the other source oscillator
Usually operates by the direct current output from the rectifier 25 and outputs a signal of a predetermined frequency. The signal output from the crystal oscillator 41 is frequency-divided into the same frequency as the output of the first frequency divider 31 by the second frequency divider 43 as the second frequency dividing means, and input to the switch 33. It
【００１１】切換器３３は、通常は第１の分周器３１を
基準分周器３５に接続しているので、クリスタル発振器
４１の出力は基準分周器３５に伝わらない。第１の分周
器３１と第２の分周器４３との切換は、商用交流が正常
に入力されているか否かにより行なわれる。本実施例で
は、変圧器２３から出力された交流信号をＡＣ検出器５
１で検出する。ＡＣ検出器５１は、所定周期、所定振幅
の交流信号が入力されている間は、正常である旨を検出
して検出信号を切換器３３に出力する。この検出信号を
入力している間、切換器３３は、第１の分周器３１を基
準分周器３５に接続している。Since the switch 33 normally connects the first frequency divider 31 to the reference frequency divider 35, the output of the crystal oscillator 41 is not transmitted to the reference frequency divider 35. Switching between the first frequency divider 31 and the second frequency divider 43 is performed depending on whether or not the commercial alternating current is normally input. In this embodiment, the AC signal output from the transformer 23 is supplied to the AC detector 5
Detect with 1. The AC detector 51 detects that the AC signal is normal and outputs a detection signal to the switch 33 while an AC signal having a predetermined amplitude and a predetermined amplitude is input. The switch 33 connects the first frequency divider 31 to the reference frequency divider 35 while inputting this detection signal.
【００１２】ここで、停電などにより変圧器２３から交
流信号が出力されなくなると、この状態をＡＣ検出器５
１が検出し、切換器３３への信号出力を停止する。この
信号停止により切換器３３は切換え動作を行ない、基準
分周器３５への接続を第１の分周器３１から第２の分周
器４３に切り換える。Here, when the AC signal is no longer output from the transformer 23 due to a power failure or the like, this state is detected by the AC detector 5.
1 is detected and the signal output to the switch 33 is stopped. By this signal stop, the switch 33 performs a switching operation, and switches the connection to the reference frequency divider 35 from the first frequency divider 31 to the second frequency divider 43.
【００１３】この切換器３３の切換え動作により、基準
分周器３５との接続が、第１の分周器３１から第２の分
周器４３に代わるが、いずれからも基準分周器３５には
同一周波数の信号が継続して入力される。したがって、
基準分周器３５が基準周波数信号を継続して出力するの
で、計時・表示部１１は計時を継続し、遅れを生じるこ
とがない。By the switching operation of the switch 33, the connection with the reference frequency divider 35 is changed from the first frequency divider 31 to the second frequency divider 43, but from either of them, the reference frequency divider 35 is connected. Signals of the same frequency are continuously input. Therefore,
Since the reference frequency divider 35 continuously outputs the reference frequency signal, the timekeeping / display unit 11 keeps timekeeping and no delay occurs.
【００１４】なお、変圧器２３から交流信号が出力され
ていない間は、充電池２７が蓄電した電力が、クリスタ
ル発振器４１、第２の分周器４３、切換器３３、基準分
周器３５および計時・表示部１１の駆動源になる。While the AC signal is not being output from the transformer 23, the electric power stored in the rechargeable battery 27 causes the crystal oscillator 41, the second frequency divider 43, the switch 33, the reference frequency divider 35 and It serves as a driving source for the timekeeping / display unit 11.
【００１５】変圧器２３から交流信号の出力が再開され
ると、ＡＣ検出器５１は検出信号を切換器３３に出力す
る。すると切換器３３は、基準分周器３５との接続を第
２の分周器４３から第１の分周器３１に切換える。これ
により、この電子時計は通常の状態に戻り、計時・表示
部１１は、商用交流の周波数を分周した基準周波数信号
に同期して計時動作を継続する。When the output of the AC signal from the transformer 23 is restarted, the AC detector 51 outputs the detection signal to the switch 33. Then, the switch 33 switches the connection with the reference frequency divider 35 from the second frequency divider 43 to the first frequency divider 31. As a result, the electronic timepiece returns to the normal state, and the timekeeping / display unit 11 continues the timekeeping operation in synchronization with the reference frequency signal obtained by dividing the frequency of the commercial AC.
【００１６】以上の通り本実施例の電子時計は、通常は
商用交流を基準周波数に変換して動作するが、停電など
により商用交流の供給が遮断されると同時に、クリスタ
ル発振器４１の出力を基準周波数に変換しての動作に切
り換わるので、停電などがあっても遅延することがな
い。しかも、通常は商用交流の周波数に同期して動作し
ているので、誤差は長期的には商用交流に依存し、小さ
い。したがって本発明の電子時計は、通常は時間調整を
行なわない、あるいは調整が困難な用途に特に有益であ
る。例えば、監視カメラは、事件、故障がなければ１
年、あるいは数年もの長期に亙って時計の表示がチェッ
クされない可能性がある。このような監視カメラに搭載
する時計として、長期的に狂いを生ぜずかつ停電の影響
を受けずに正確な時間を表示する本発明の電子時計は大
変有益である。As described above, the electronic timepiece of this embodiment normally operates by converting the commercial alternating current into the reference frequency, but the supply of the commercial alternating current is interrupted due to a power failure or the like, and at the same time, the output of the crystal oscillator 41 is used as the reference. Since the operation is switched to the frequency, there is no delay even if there is a power failure. Moreover, since it normally operates in synchronization with the frequency of the commercial AC, the error depends on the commercial AC in the long term and is small. Therefore, the electronic timepiece of the invention is particularly useful for applications where time adjustment is not normally performed or adjustment is difficult. For example, the surveillance camera is 1 if there is no incident or failure.
It is possible that the clock display may not be checked for years or even long periods of time. As a timepiece mounted on such a surveillance camera, the electronic timepiece of the present invention that displays an accurate time without causing a long-term error and without being affected by a power failure is very useful.
【００１７】以上、本実施例では、商用交流の周波数お
よびクリスタル発振器４１の周波数をそれぞれ第１の分
周器３１、第２の分周器４３で分周し、これらを切換器
３３により択一的に基準分周器３５に出力する構成とし
たが、第１、第２の分周器３１、４３と切換器３３のそ
れぞれの間に基準分周器３５を配置してもよい。また、
本実施例では第１、第２の分周器３１、４３で分周した
周波数をさらに基準分周器３５で分周して基準周波数を
得る構成としたが、第１、第２の分周器３１、４３がそ
れぞれ基準周波数を出力する構成としてもよい。なお、
本実施例では周波数をすべて分周器で分周する構成で示
してあるが、倍周器、逓倍回路などで周波数を数倍にす
る過程を含めてもよいことはいうまでもない。また、他
の源振部はクリスタル発振器に限定されず、音叉その他
でもよい。As described above, in the present embodiment, the frequency of the commercial AC and the frequency of the crystal oscillator 41 are respectively divided by the first frequency divider 31 and the second frequency divider 43, and these are selected by the switch 33. However, the reference frequency divider 35 may be arranged between each of the first and second frequency dividers 31, 43 and the switch 33. Also,
In the present embodiment, the frequency divided by the first and second frequency dividers 31, 43 is further divided by the reference frequency divider 35 to obtain the reference frequency, but the first and second frequency dividers are used. The devices 31 and 43 may each be configured to output the reference frequency. In addition,
In this embodiment, the frequency is entirely divided by the frequency divider, but it goes without saying that a step of multiplying the frequency by a frequency divider, a multiplication circuit or the like may be included. Further, the other source oscillation unit is not limited to the crystal oscillator, and may be a tuning fork or the like.
【００１８】[0018]
【発明の効果】以上の説明から明らかな通り本発明は、
通常は商用交流により動作し、商用の交流の供給が遮断
された時には、発振手段の出力による動作に切り換わる
ので、商用の交流の供給が停電などの事情により遮断さ
れても遅延することがない。As is apparent from the above description, the present invention is
Normally, it operates by commercial alternating current, and when the supply of commercial alternating current is cut off, it switches to the operation by the output of the oscillation means, so there is no delay even if the supply of commercial alternating current is cut off due to circumstances such as power failure. .
【図１】本発明を適用した電子時計の構成の要部を示す
ブロック図である。FIG. 1 is a block diagram showing a main part of a configuration of an electronic timepiece to which the invention is applied.
１１ 計時・表示部 ２１ プラグ ２３ 変圧器 ２５ 整流器 ２７ 充電池 ３１ 第１の分周器 ３３ 切換器 ３５ 基準分周器 ３７ 50/60HZ 選択部材 ４１ クリスタル発振器 ４３ 第２の分周器 ５１ ＡＣ検出器 11 Timing / Display 21 Plug 23 Transformer 25 Rectifier 27 Rechargeable Battery 31 First Divider 33 Switcher 35 Reference Divider 37 50 / 60HZ Selection Member 41 Crystal Oscillator 43 Second Divider 51 AC Detector
Claims (5)
機構を有する電子時計であって、 商用交流を入力する入力手段；所定周波数の信号を出力
する発振手段；上記商用交流および上記所定周波数の信
号を上記基準周波数信号に変換する手段；上記商用交流
が入力されているか否かを検出する検出手段；および、 この検出手段が上記商用交流が入力されていることを検
出しているときには上記商用交流を変換した基準周波数
信号に同期して上記時計機構を作動させ、上記検出手段
が上記商用交流が入力されていないことを検出している
ときには上記所定周波数を変換して基準周波数信号に同
期して上記時計機構を作動させる切換え手段；を備えた
ことを特徴とする電子時計。1. An electronic timepiece having a timepiece mechanism that operates in synchronization with a reference frequency signal, comprising: input means for inputting commercial alternating current; oscillating means for outputting a signal of a predetermined frequency; Means for converting a signal into the reference frequency signal; detection means for detecting whether or not the commercial alternating current is input; and, when the detection means detects that the commercial alternating current is input, the commercial The clock mechanism is operated in synchronism with the reference frequency signal obtained by converting the alternating current, and when the detecting means detects that the commercial alternating current is not input, the predetermined frequency is converted and synchronized with the reference frequency signal. An electronic timepiece comprising a switching means for activating the above timepiece mechanism.
記入力した商用交流を直流に変換して出力する整流回路
と、この直流により充電される充電部材とを備え、上記
時計機構、発振手段および切換え手段は、上記商用交流
が入力されているときには上記整流回路が出力する直流
により動作し、上記商用交流が入力されていないときに
は上記充電部材の電力により動作すること、を特徴とす
る電子時計。2. The electronic timepiece according to claim 1, further comprising a rectifier circuit that converts the input commercial alternating current into direct current and outputs the direct current, and a charging member that is charged by the direct current. The means and the switching means operate by the direct current output from the rectifier circuit when the commercial alternating current is input, and operate by the power of the charging member when the commercial alternating current is not input. clock.
らに、上記商用交流を所定周波数の信号に変換する第１
の分倍周手段と、上記発振手段が出力する交流信号を上
記所定周波数の信号に変換する第２の分倍周手段とを備
え、上記切換え手段は、上記時計機構と、上記第１の分
倍周手段および第２の分倍周手段との接続を択一的に切
換えること、を特徴とする電子時計。3. The electronic timepiece according to claim 1 or 2, further comprising: a first time-converting the commercial alternating current into a signal of a predetermined frequency.
And frequency dividing means, and second frequency dividing means for converting the AC signal output from the oscillating means into a signal having the predetermined frequency. The switching means includes the timepiece mechanism and the first frequency dividing means. An electronic timepiece characterized in that the connection between the frequency doubler and the second frequency doubler is selectively switched.
て、上記発振手段はクリスタル発振器であること、を特
徴とする電子時計。4. The electronic timepiece according to claim 1, wherein the oscillating means is a crystal oscillator.
の電子時計は、監視カメラにその時計として搭載される
こと、を特徴とする電子時計。5. An electronic timepiece according to any one of claims 1 to 4, wherein the electronic timepiece is mounted on a surveillance camera as the timepiece.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6199270A JPH0862356A (en) | 1994-08-24 | 1994-08-24 | Electronic clock |
| DE1995131205 DE19531205A1 (en) | 1994-08-24 | 1995-08-24 | Electronic clock |
| GB9517390A GB2292623A (en) | 1994-08-24 | 1995-08-24 | Electronic clock with internal battery back up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6199270A JPH0862356A (en) | 1994-08-24 | 1994-08-24 | Electronic clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0862356A true JPH0862356A (en) | 1996-03-08 |
Family
ID=16405000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6199270A Pending JPH0862356A (en) | 1994-08-24 | 1994-08-24 | Electronic clock |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0862356A (en) |
| DE (1) | DE19531205A1 (en) |
| GB (1) | GB2292623A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017026105A1 (en) * | 2015-08-07 | 2017-02-16 | Ｎｅｃプラットフォームズ株式会社 | Ac input/dc output power supply and method for controlling same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2407401A (en) * | 2003-10-23 | 2005-04-27 | Diehl Ako Stiftung Gmbh & Co | Mains Controlled Timer. |
| FR2867575B1 (en) * | 2004-03-09 | 2006-05-19 | Brandt Ind | METHOD FOR MANAGING A DISPLAY OF HOURLY INFORMATION IN AN ELECTRICAL APPARATUS |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1380211A (en) * | 1972-04-24 | 1975-01-08 | Saba Gmbh | Electrically driven clock |
| DE2309598A1 (en) * | 1973-02-26 | 1974-09-05 | Centra Buerkle Kg Albert | DRIVE FOR TIME SWITCHES OR THE SAME |
| GB1474021A (en) * | 1973-07-13 | 1977-05-18 | Smiths Industries Ltd | Timing apparatus |
| JPS5653351Y2 (en) * | 1976-09-06 | 1981-12-11 | ||
| JPS56150382A (en) * | 1980-04-24 | 1981-11-20 | Sanyo Electric Co Ltd | Electronic watch |
| US4634288A (en) * | 1985-04-17 | 1987-01-06 | Clemar Manufacturing Corporation | Auxiliary timing source for ac-powered electronic clocks |
-
1994
- 1994-08-24 JP JP6199270A patent/JPH0862356A/en active Pending
-
1995
- 1995-08-24 GB GB9517390A patent/GB2292623A/en not_active Withdrawn
- 1995-08-24 DE DE1995131205 patent/DE19531205A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017026105A1 (en) * | 2015-08-07 | 2017-02-16 | Ｎｅｃプラットフォームズ株式会社 | Ac input/dc output power supply and method for controlling same |
| US10320307B2 (en) | 2015-08-07 | 2019-06-11 | Nec Platforms, Ltd. | AC input/DC output power supply and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2292623A (en) | 1996-02-28 |
| GB9517390D0 (en) | 1995-10-25 |
| DE19531205A1 (en) | 1996-02-29 |
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