| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Electronic timepiece | US430569 | 1982-09-30 | US4441826A | 1984-04-10 | Shigeru Morokawa; Keiichiro Koga |
| An electronic timepiece having voltage regulation, temperature detection and battery voltage detection means provided on the same integrated circuit as is used for timekeeping circuitry, and having external terminals for stepwise weighted adjustment of timekeeping gain/loss. | ||||||
| 142 | D-C Voltage converter for a wristwatch | US185493 | 1980-09-09 | US4371269A | 1983-02-01 | Hans-Rudolf Sutter |
| A d-c converter for inclusion in a miniature electronic device, such as an electronic wristwatch having a d-c supply source, the converter functioning to increase or decrease the voltage of this source. The converter includes a transformer whose primary is connected to the source through a periodically-actuated chopper to produce an alternating voltage, the secondary of the transformer being connected to a rectifier circuit having at least one controllable switch element whose on-off state is governed in synchronism with the chopper whereby the switch element acts to rectify the secondary voltage. | ||||||
| 143 | Voltage detection circuit | US886425 | 1978-03-14 | US4322639A | 1982-03-30 | Osamu Yamashiro |
| A voltage detection circuit adapted for use in an electronic timepiece in which a source voltage from a battery power source, etc. is voltage-divided and applied to an input of a logic circuit including complementary MIS FETs so as to compare the divided source voltage with a reference potential level and to detect whether the source voltage is above a predetermined value or not. In the logic circuit, the logic threshold is set in the neighborhood of the threshold voltage of one MIS FET to establish a reference potential level. Advantages are provided in integrating the circuit in a semiconductor integrated circuit such that parameters relevant to the manufacturing processes do not influence the reference potential level very much and the dispersion in the detected voltage due to the fluctuations in the manufacturing processes are minimized. | ||||||
| 144 | Cell capacity detector | US99746 | 1979-12-03 | US4321541A | 1982-03-23 | Akihiro Nishizuka |
| A capacity detector of a cell used as a source of power for a watch, camera or any other portable implement, wherein a resistive load is connected in series through a switch; the switch is opened immediately after a prescribed length of time; a speed of the cell voltage restoration is calculated which is required for a cell voltage restored after the opening of the switch to be brought back to a prescribed reference level; and the remaining capacity of the cell is numerically determined from said calculated length of time. | ||||||
| 145 | Battery life indication method for an electronic timepiece | US7533 | 1979-01-29 | US4316274A | 1982-02-16 | Kenichi Ushikoshi |
| The degenerating condition of the power source in an electronic timepiece, that is, a diminished battery voltage, is indicated to the user by unusual performance of the watch bands. Short periods of accelerated or decelerated hand movements alert the user to the battery condition. Persistent though intermittent unusual hand behavior distinguishes the battery life signals from malfunctions or poor timekeeping. A voltage detector circuit monitors the power source and on low voltage initiates the warning signals which are derived from the divider network of the timepiece. Mechanically resetting the hands to remove the visible effects or erratic hand movement, serves to reset the battery life detector circuits and repeat the warnings. | ||||||
| 146 | Battery-driven clock with indicator of the end of life of the battery | US019817 | 1979-03-12 | US4315328A | 1982-02-09 | Jean-Francois Schwab |
| A battery-driven clock with a timing stage which emits a control signal of a certain frequency to an electromechanical or electronic indicator stage, and a warning stage establishing the end of the service life of the battery. In the warning situation the warning stage influences the frequency of the control signal in the sense of advancing the clock. | ||||||
| 147 | Electronic time-counter for the diving | US45742 | 1979-06-05 | US4307449A | 1981-12-22 | Daniel Strubin |
| An electronic time-counter for diving including a device ensuring its automatic switching on under the action of the water during its immersion and a unique control element manually operable and arranged in such a way that its operation produces the reset to zero of the display device so as enable the diver to measure the intermediary time durations between the beginning and the end of a dive. This counter includes moreover a first memory circuit recording the time which has elapsed between the automatic switching on of the counter at the moment of its immersion and the first operation of the control element. This counter further includes second memory circuit recording the total duration of the dive between the automatic switching on of the counter at the moment of its immersion and its automatic releasing or switching off at the moment of its emersion. | ||||||
| 148 | Voltage detecting circuit | US763598 | 1977-01-28 | US4293782A | 1981-10-06 | Kojiro Tanaka; Shozo Ochiai; Hideki Noda |
| A voltage detecting circuit, for example for detecting the approaching exhaustion of the battery of a timepiece, hand-held calculator or other small electronic device uses a MOS transistor, the operating point of which in detecting the predetermined voltage is selected as the point at which the ratio of the current to the conductive constant of the MOS transistor is above 0.1. The temperature compensation thereby achieved is good enough that the measured value almost coincides with the design value without the need of using a variable resistor. | ||||||
| 149 | Reduction of energy consumption of electronic timepiece | US50340 | 1979-06-20 | US4281405A | 1981-07-28 | Rene Besson; Igor Scherrer |
| Reduces the consumption of an electronic time piece equipped with a motor 4 driving a display unit 5. A quartz oscillator 1 feeds a supply circuit 3 through a frequency divider 2. The supply circuit 3 of the motor and its control circuit 9 periodically decrease the pulse energy supplied to the motor in response to a reference signal 8.2 provided by a reference counter say every 60 seconds. The energy then supplied to the motor is regulated as a function of the presence or absence of a signal delivered by a detection switch 7 operated by the display unit. If the detection switch does not close, compensating pulses are fed to the motor to catch up the lost seconds and the pulse energy is stepped up. | ||||||
| 150 | Electric timepiece for displaying the operating condition thereof | US969577 | 1978-12-14 | USRE30588E | 1981-04-21 | Munetaka Tamaru; Kazunari Kume; Hideshi Oono; Minoru Watanabe; Hideo Sato; Shigeru Morokawa |
| In a battery operated electric timepiece operated by a battery of the type including a time display, such as a second hand, when the voltage of the battery decreases below a predetermined value, the movement of the second hand is modified to give an alarm that the life of the battery has terminated. | ||||||
| 151 | System for signalling the termination of the lifetime of a battery for electronic timepieces | US966063 | 1978-12-04 | US4262349A | 1981-04-14 | Fukuo Sekiya; Takashi Yamada; Kazunari Kume |
| A system for signalling the termination of the lifetime of a battery for an electronic timepiece is disclosed. The system includes a hand display device, an electro-optical display device, a battery voltage detecting circuit adapted to produce a signal when voltage of the battery lowers below a predetermined value, and means for modulating the time display pulse to be applied to one of the display devices in response to the signal generated in the battery voltage detecting circuit, thereby to modifying the time display for informing the end of the battery lifetime. | ||||||
| 152 | Electronic clock having an analog display and a plurality of digital functions | US4186 | 1979-01-17 | US4262345A | 1981-04-14 | Wolfgang Ganter; Friedrich Assmus |
| A watch comprises an electronically controlled digital display of the month, day of the month, day of the week, or other information, in addition to a time-indicating analog display system. A single control circuit, using integrated circuit technology, controls the operation of the two display systems. A synchronizing arrangement for the synchronous control of the two display systems and a battery-condition control circuit to monitor the state of the watch battery are also included. The combination of these features provides the user with a watch which can be set and corrected in a simple manner, which insures a synchronous link between all of the data being displayed, and which provides a timely warning when a battery change is necessary. | ||||||
| 153 | Electronic timepiece | US9724 | 1979-02-05 | US4250523A | 1981-02-10 | Masami Murata |
| An inspection circuit for use in an electronic timepiece is provided. The inspection circuit is characterized by the use of a gating circuit intermediate the timekeeping circuit of an electronic timepiece and certain counters that apply timekeeping signals to the digital display digits. The gating circuit is adapted to be selectively disposed into an inspection mode and thereby simultaneously apply to certain of the counters producing timekeeping signals a predetermined frequency inspection signal thereby reducing the time required to inspect the performance of the timepiece. | ||||||
| 154 | Electronic wristwatch | US928797 | 1978-07-28 | US4236237A | 1980-11-25 | Singo Ichikawa |
| In an electronic wristwatch having a digital type of photo-electric display and powered by a battery, a battery life warning system is provided whereby the battery voltage is checked at periodic intervals and the photoelectric display is caused to flash on and off repetitively to indicate the approach of the end of the battery life. The timing of sampling pulses applied to a voltage detection circuit is controlled such that a temporary drop in battery voltage does not cause a display warning signal to be generated. | ||||||
| 155 | Abnormal voltage detection circuit | US858209 | 1977-12-07 | US4173756A | 1979-11-06 | Kenji Kawagai; Shigeki Yoshida; Hisaharu Ogawa; Toshiro Ohashi |
| An abnormal voltage detection circuit includes a series circuit of a resistor and a capacitor coupled across a power source by means of a switch, an inverter with the input terminal coupled to the junction of the resistor and capacitor, and an R-S flip-flop circuit with the set and reset input terminals coupled to the output terminal of the inverter and a manual switch respectively. The R-S flip-flop circuit is set by a first threshold voltage lower than the threshold voltage of the inverter, and reset by a second threshold voltage higher than the threshold voltage of the inverter. | ||||||
| 156 | Driver circuit for electro-mechanical transducer | US821433 | 1977-08-03 | US4158287A | 1979-06-19 | Fumio Nakajima; Takayasu Machida; Kenji Yamada |
| An electro-mechanical transducer driver circuit for an electronic timepiece characterized in that the pulse width of a driving pulse which drives an electro-mechanical transducer is controlled in a step-wise manner by the induced voltage of a driving coil. | ||||||
| 157 | Electronic timepiece with battery life display | US705445 | 1976-07-15 | US4074515A | 1978-02-21 | Kazuhiro Asano |
| In a digital electronic timepiece, at least one of the digital displays changes color to indicate that the battery is nearing exhaustion. The display is made up of two sets of display elements, for example LEDs, disposed closely adjacent alongside one another. The two sets are of different display color, eg. red and green. Circuitry responsive to battery voltage causes display elements of one set to be illuminated when the battery voltage is normal and causes display elements of the other set to be illuminated when the battery voltage drops below a predetermined value. The resulting change in color of the display indicates that the battery is approaching the end of its life. | ||||||
| 158 | Electronic timepiece having a battery voltage monitor | US653256 | 1976-01-28 | US4043112A | 1977-08-23 | Kojiro Tanaka |
| In an electronic timepiece including a driving circuit for developing display driving signals, and a time display receptive of the display driving signals for displaying time, a battery voltage level monitor. The battery voltage level monitor comprises a voltage detector operative to detect the voltage of a battery which powers the timepiece, and to develop a detector signal when the battery voltage is less than a certain value. The driving circuit includes a display signal control circuit which is responsive to the setting of a display restoring switch and the detector signal for interrupting the display driving signals applied to the display in response to the detector signal, in order to de-energize the display to indicate that the battery voltage is below the certain level. The display signal control circuit is operable to apply the display driving signals to the display under control of the display restoring switch even in the presence of the detector signals thereby to enable the display of time after a low battery voltage condition has been detected. | ||||||
| 159 | Electronic timepiece battery-potential detecting circuit | US609459 | 1975-09-02 | US4043110A | 1977-08-23 | Hiroyuki Chihara |
| An electronic timepiece battery-potential detecting circuit unaffected by temperature changes is provided. An electronic timepiece includes a DC power source such as a battery for providing an effective potential for energizing the timekeeping circuitry and display thereof. An electronic switching element is provided for detecting the effective potential of the DC power source. The electronic switching element includes a first electrode coupled to the power source for detecting the effective potential thereof, and two further electrodes defining a closed current path in response to the control electrode being referenced above a predetermined potential, the two further electrodes defining an open current path in response to the potential detected by the control electrode dropping to the predetermined potential, at least one of the further electrodes having a current temperature coefficient of substantially zero when the effective potential of the DC power source is above the predetermined potential. | ||||||
| 160 | Electronic timepiece battery potential detecting circuitry | US616347 | 1975-09-24 | US4037399A | 1977-07-26 | Hiroyuki Chihara |
| An electronic timepiece battery-potential detecting circuit uneffected by temperature changes is provided. The electronic timepiece includes a D.C. power source such as a battery for providing an effective potential for energizing the timekeeping circuitry and display thereof. An electronic switching circuit is provided for detecting the effective potential of the D.C. power source. The electronic switching circuit includes a first stage switching element having a control electrode coupled to the power source for detecting the effective potential thereof, and two further electrodes defining a closed current path having either a first positive or negative current temperature coefficient in response to the control electrode being referenced above a predetermined potential, the two further electrodes defining a closed current path in response to the potential detected by the control electrode being above a predetermined potential, and a second stage switching element having a control electrode coupled to one of the first stage element further electrodes for detecting the potential thereof, the second stage element including further electrodes defining a closed current path having either a positive or negative current temperature coefficient opposite from the first stage element in response to the second stage element control electrode being referenced below the predetermined potential, the two further electrodes of the second stage element defining a closed current path. | ||||||
QQ群二维码
意见反馈
意见反馈