EP0806713B1 - Steuerschaltung mit nachstimmbarem Standby-Oszillator - Google Patents
Steuerschaltung mit nachstimmbarem Standby-Oszillator Download PDFInfo
- Publication number
- EP0806713B1 EP0806713B1 EP97107367A EP97107367A EP0806713B1 EP 0806713 B1 EP0806713 B1 EP 0806713B1 EP 97107367 A EP97107367 A EP 97107367A EP 97107367 A EP97107367 A EP 97107367A EP 0806713 B1 EP0806713 B1 EP 0806713B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequency
- oscillator
- standby
- control circuit
- during
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/46—Locking several wings simultaneously
- E05B77/48—Locking several wings simultaneously by electrical means
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G3/00—Producing timing pulses
- G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
Definitions
- the invention relates to a control circuit by means of which electrical Devices can be controlled and their operating states can be monitored.
- control circuit for example, a central locking device controlled and monitored a motor vehicle.
- a control circuit for controlling and Monitoring of a so-called state machine can be used, the can produce a predetermined number of states due to current states and input variables from one state to another changes state and generates output signals.
- From DE 42 21 142 A1 is a central locking system for a Motor vehicle known that housed a in a door key Transmitter and a receiver housed in the motor vehicle.
- a code is sent by the transmitter, which decodes by the receiver is and leads to the actuation of the central locking system, if the correct code has been sent.
- Form transmitter and receiver thus a remote control device. So that this either can work with radio frequencies or with light frequencies both an RF oscillator and a light wave oscillator, the RF carrier or light wave each with the transmission-side code word can be modulated, and both an RF detector and receiver also a light wave detector is provided, the output signals of which common decoder are performed.
- US 4,857,917 A is a remote-controlled central locking system known for a motor vehicle, the arranged in the motor vehicle Receiver is switched on and off periodically to the Reduce overall power consumption. So when sending out a Code signal from one transmitter to the central locking system on each If responding, the code pulse sequence on the transmission side becomes a guide pulse sent forward, the duration of which is longer than the temporal Distance between two successive switch-on intervals of the receiver. In this way the receiver is safely activated by the guide impulse, to then receive and process the code pulse sequence can.
- the receiver is equipped with a clock pulse generator equipped, which corresponds to the switch-on intervals of the receiver Clock pulses to a first input of an AND logic circuit supplies.
- a second input of the AND logic circuit are received and shaped impulses from the transmitter fed. If the timer generates a pulse during a clock pulse received by the transmitter, triggers the resulting output signal the AND logic circuit a monostable multivibrator, whose output signal for a predetermined period of time, which at least is as long as that from the transmitter following a lead pulse sent code pulse train, a power supply to the receiver turns. Is no pulse during a clock pulse from the timer received by the transmitter, the power supply to the receiver only switched on for the respective duration of the clock pulse.
- a RAM circuit which is for a Refresh operation in an active operating state and otherwise in a standby operating state is switchable.
- An oscillator is provided whose frequency is switchable, depending on whether the RAM circuit in the refresh mode or in the standby mode located.
- EP 0 457 964 A1 describes a telecontrol system for controlling Vehicle additional devices are known, the ones arranged in the vehicle Receiver is switched on and off periodically to the average To reduce the power consumption of the receiver.
- sending the transmitter is switched on for a period of time, so is great that in their time at least one switch-on interval of the receiver falls, so the receiver is definitely on a send can react.
- EP-A-0 586 256 discloses a time measurement system with two oscillators different frequency known. By means of an error calibration device the frequencies of the two oscillators are compared. through A selector will either count the frequency of the faster on a counter Given the oscillator or the frequency of the slower oscillator.
- an oscillator circuit is known, the one has a high-frequency oscillator and a low-frequency oscillator. At least the low-frequency oscillator is one Crystal oscillator. The frequency of the high-frequency oscillator is up divided the frequency of the low frequency oscillator. The frequency of the low frequency oscillator and the divided frequency of the high frequency oscillator are both on a differential frequency generator given at the output of a correction signal if the divided frequency of the high frequency oscillator and the frequency of the low-frequency oscillator differ from each other.
- the Correction signal affects a programmable frequency divider that divides the output signal of the low-frequency oscillator.
- the high frequency crystal oscillator turns every 15 minutes for about 16 seconds switched on. During this respective duty cycle the Programmable frequency dividers reset each time.
- the two Oscillators themselves each have a fixed frequency.
- DE 43 02 232 A1 describes a device for operating a Microprocessor known, by means of which the microprocessor in one can be operated actively and in an inactive operating state, to conserve the battery that powers the microprocessor.
- the microprocessor In the inactive state, the microprocessor can either be triggered by a wake-up signal a watchdog arranged in the microprocessor or by an external wake-up signal, periodically from an external Oscillator is released, brought into the active state.
- the external oscillator is built with two CMOS inverters.
- a conventional control circuit of the type mentioned includes a control device, which is a microcontroller can act, and a main oscillator, which is a clock signal for the Operation of the control device delivers.
- a control device which is a microcontroller can act
- a main oscillator which is a clock signal for the Operation of the control device delivers.
- Such Control circuit contain a condition monitoring device, by means of which the respective states of predetermined electrical devices, such as electrical switch contacts, sensors and / or detectors can be monitored and represent the respective states to the control device Status signals are available.
- the control circuit becomes a functional safety even when none There is a need for tax, repeated for a short wake-up period switched back to full operation. Such a temporary downshift in full operation usually happens periodically. For example takes place after standby periods with a duration of each a few seconds switch back to full operation for a wake-up time of a few milliseconds each. In this example there is the control circuit only in the range of a few ⁇ of the total time in Full operation, the rest of the time in standby mode. The average Power consumption by the control circuit parts with significant Power consumption is reduced accordingly to a few ⁇ of that Power consumption that would occur if the control circuit was permanent would be kept in full operation.
- the control circuit according to the invention is at times without tax requirement switchable to standby mode and during standby mode repeated for a short wake-up time in full operation gurschaltbar. It has a full operating circuit part, the is only operable during full operation of the control circuit and a frequency-stable main oscillator with a relatively high power requirement having. It includes a standby circuit section, which is both in full operation as well as in standby mode and one in itself low-frequency, tunable standby oscillator with low Has electricity requirements. The standby oscillator is used during wake-up times tuned with the help of the main oscillator.
- the full operating circuit part comprises a control device and contains the standby circuit part a frequency control device in which the oscillator frequency of the Standby oscillator controlling frequency control signal can be stored, and a wake-up device controlled by an output signal of the standby oscillator, by means of which during the wake-up times each at least the control device and the main oscillator in full operation are feasible.
- a frequency measuring device is provided by means of which during the wake-up times a measurement of the Actual oscillator frequency of the standby oscillator can be carried out.
- This Embodiment has a frequency correction device, by means of which is the actual oscillator frequency measured during the respective wake-up time is comparable to an oscillator target frequency and by means of which one depends on the respective comparison result corrected frequency control signal can be generated and each as a new frequency control signal can be stored in the frequency control device.
- every wake-up operation is carried out the actual frequency of the standby oscillator measured and at a Deviation of the actual frequency of the standby oscillator from its target frequency tuning the standby oscillator to the desired one Target frequency causes. Because of the relatively short time intervals the standby oscillator stops between the individual wake-up times thus, despite its inherently poor frequency constancy, its target frequency with very high reliability.
- the control circuit contains a condition monitoring device by means of which Standby operation of the control circuit predetermines the respective states Sensors and / or detectors and / or other types of electrical Facilities can be monitored and the control circuit at the Determination of predetermined conditions can be switched back to full operation.
- the control circuit can have a microcontroller that at least has an interrupt input through which the microcontroller standby can be switched back to full operation.
- the frequency of the Standby oscillator controllable by means of a digital frequency control signal his When using an IC oscillator as a standby oscillator can have a plurality of differently weighted tuning current sources be provided, determined with the digital frequency control signal which of the tuning current sources is used to charge one Capacity of the standby oscillator.
- the frequency control device can have a frequency control signal register, in which the frequency control signal that occurs during the respective Wake-up time from a comparison of the actual and target frequency of the Standby oscillator has resulted, is storable and its memory content determines the respective frequency of the standby oscillator.
- the frequency measuring device can have a time window device, by means of which a time window within the respective wake-up period with one of the actual oscillation period duration of the standby oscillator dependent window duration opened, the number of during the Window duration occurring oscillations of the main oscillator are counted and the count value thus obtained by means of a frequency comparison device with one of the oscillation period set duration of the Standby oscillator corresponding reference count is compared.
- the control circuit according to the invention is suitable for a central locking device for a motor vehicle that have multiple electrical Has switch contacts, for example, in different places locking locks of the motor vehicle are assigned and of which upon actuation of the central locking device at least a part changes its switching state.
- the control circuit can switch states at least some of the switch contacts are monitored. Will in Standby mode a change in the switching state of at least one of the electrical contacts are detected, the system switches back to full operation.
- a control circuit comprises as a control device a microcontroller ⁇ C, which under the timing control as a Quartz oscillator trained main oscillator MOSC, of which the Microcontroller ⁇ C via a first microcontroller input IN1 Main clock signal MCLK received.
- This control circuit also includes a standby oscillator SBOSC, which is a standby clock signal SBCLK generated. This is given to a wake-up circuit WUP. This periodically generates an under control of the standby clock signal SBCLK Wake-up signal sent to an interrupt input INT of the microcontroller ⁇ C delivers.
- the wake-up signal is generated with every nth clock pulse of the standby clock signal SBCLK, where n is any can be an integer.
- the frequency of the standby oscillator SBOSC is tunable by means of a digital frequency control signal FCS, which is in a frequency control signal register FCR can be saved.
- FCS digital frequency control signal
- FCR frequency control signal register
- the control circuit also has a frequency measuring device TIMER on that with the microcontroller via a data bus DB in Connection is established.
- the frequency measuring device TIMER has one Time measurement input ZE on, to the output of an AND logic circuit A is connected to the one with the output of the main oscillator MOSC connected first input E1, one with a Output of a gate logic GL connected to the second input E2 and has an output O connected to the time measurement input ZE.
- the gate logic GL has a logic input LE to which the standby clock signal SBCLK is fed.
- the gate logic GL generates on one Logic output LA timed by SBCLK within one every m-th wake-up time, where m is any integer can and is preferably equal to 1, a window signal GATE which the Duration of a time window TF (Fig. 3) determined and on the one hand the second Input E2 from A and on the other hand a second microcontroller input IN2 is supplied.
- a window signal GATE which the Duration of a time window TF (Fig. 3) determined and on the one hand the second Input E2 from A and on the other hand a second microcontroller input IN2 is supplied.
- this window signal GATE is the AND gate A for the main clock signal MCLK (Fig. 2) of the main oscillator MOSC permeable.
- the frequency measuring device TIMER counts the number of you during each Time window TF supplied clock pulses of the main clock signal MCLK (Fig. 4).
- the microcontroller ⁇ C asks about the Data bus DB from the frequency measuring device TIMER at the end of Time window TF reached count value.
- the main oscillator MOSC has a frequency of 8, for example MHz and the standby oscillator SBOSC has e.g. a frequency of 32 KHz.
- the time window TF which strictly with the frequency of the Standby oscillator SBOSC is correlated and for example the duration of a clock pulse from SBCLK, therefore, fit essentially in practice more clock pulses MCLK than is shown in Figures 2 to 4.
- a setpoint value, which is one, is stored in the microcontroller ⁇ C corresponds to the predetermined target frequency of the standby oscillator SBOSC.
- the one at the end of a TF time window from TIMER to the microcontroller ⁇ C delivered count value, which the respective actual frequency of the Standby oscillator corresponds to SBOSC and is therefore referred to as the actual count value is compared in the microcontroller ⁇ C with the target count value. If the actual count value deviates from the target count value, it is generated the microcontroller ⁇ C a correction signal and depending of which a digital frequency control signal FCS, which from the microcontroller ⁇ C via the data bus DB into the frequency control signal register FCR is registered. In addition, the TIMER is switched back to one Initial count value reset from 0, for example.
- the one written into the frequency control signal register FCR Frequency control signal determines the respective frequency of the standby oscillator SBOSC until the frequency control signal register FCR from Microcontroller ⁇ C a new frequency control signal is delivered.
- FIG. 5 shows a preferred embodiment of one for the invention Control circuit suitable standby oscillator SBOSC.
- This Standby oscillator is constructed as an IC oscillator in a manner known per se, so as an oscillator that has a capacitor that is periodic alternately charged by means of a power source device and is discharged using a switch.
- the oscillator shown in Figure 5 includes one between a supply voltage source UB and a ground connection GND switched Series connection with a capacitor C and four parallel to each other switched current sources S1 to S4.
- the capacitor C is a first one Switch SW1 connected in parallel.
- a node P between that Capacitor C and the current sources S1 to S4 has one input a comparator COM connected, the output signal of the switching state of the switch SW1 controls.
- the current source S1 serves as the main current source and is permanently connected to the capacitor C.
- the Current sources S2 to S4 serve as tuning current sources.
- each of the tuning current sources S2 to S4 and the voltage supply source UB is one of three switches SW2 to SW4 switched.
- the switching states of the switches SW2 to SW4 are determined by means of switch control signals FCS1, FCS2 or FCS3 controlled, which are by different bit positions of the in the frequency control signal register FCR stored frequency control signal FCS.
- the tuning current sources S2 to S4 deliver different sized current values I 1 or I 1/2 or I 1/4 and are weighted according to the dual number system.
- the oscillator shown in Figure 5 functions such that the capacitor C with switch SW1 open with at least the current Main power source S1 is charged.
- the charging voltage of the capacitor C increases accordingly until this charging voltage reaches a predetermined one Reference value reached, whereupon the comparator COM Output signal generated, which the switch SW1 in its conductive Condition leads to a sudden discharge of the capacitor C leads.
- This alternating charging and discharging of the capacitor repeats itself periodically, the steepness of the rise in the charging voltage and thus the respective duration of the charging process from depends on the charging current. This in turn depends on how many the tuning current sources S2 to S4 by means of the associated switches SW2 to SW4 are switched on. And this is through that in the frequency control signal register FCR each stored digital frequency control signal FCS determined.
- the wake-up circuit WUP When using the control circuit for a central locking device of a motor vehicle can the wake-up circuit WUP simultaneously can be used as condition monitoring device, by means of which the respective states of predetermined (not shown) sensors and / or detectors or other electrical devices, for example of electrical switch contacts, the various Locking locks of the motor vehicle are monitored become.
- this standby mode is under control of the standby clock signal SBCLK from the wake-up circuit WUP periodically after the microcontroller at certain intervals, for example every 1 s ⁇ C via the INT input for a respective wake-up time of for example 1 ms turned on, which also turns on the main oscillator MOSC leads.
- the respective wake-up time generated a time window TF by means of the gate logic GL, with the help of ⁇ C the comparison between the actual frequency and the target frequency of the Standby oscillator SBOSC performed and the result of this Comparison dependent new frequency control signal in the frequency control signal register FCR registered, leading to appropriate control the switches SW2 to SW4 of the standby oscillator shown in Figure 5 SBOSC leads.
- the microcontroller ⁇ C and the main oscillator MOSC switched off again.
- the wake-up circuit Restores the wake-up circuit to one or more of the electrical contacts monitored by her during a change of state a standby time period, it gives immediately, d. i.e. without the wait for the next wake-up time, one via the interrupt input INT Interrupt command to the microcontroller acting as a wake-up signal ⁇ C, whereupon this and the main oscillator MOSC are switched on, the control circuit is thus switched back to full operation. Since the microcontroller ⁇ C is switched off by a stop command the microcontroller ⁇ C sets its own every time it is woken up Operation continues in the program step in which it was previously carried out the stop command has been switched off.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Microcomputers (AREA)
- Electronic Switches (AREA)
Description
- Figur 1
- ein Blockschaltbild einer Ausführungsform einer erfindungsgemäßen Steuerschaltung;
- Figur 2
- Taktsignale eines Hauptoszillators der in Figur 1 gezeigten Steuerschaltung;
- Figur 3
- ein Zeitfenster der in Figur 1 gezeigten Steuerschaltung;
- Figur 4
- mit Hilfe des Zeitfensters herausgegriffene Taktsignale des Hauptoszillators;
- Figur 5
- eine Ausführungsform eines bei der Steuerschaltung nach Figur 1 verwendbaren Standby-Oszillators.
Claims (12)
- Steuerschaltung, die während Zeiten ohne Steuerbedarf in einen Standby-Betrieb schaltbar und während des Standby-Betriebs wiederholt für jeweils eine kurze Aufweckzeit in einen Vollbetrieb rückschaltbar ist;
mit einem Vollbetriebsschaltungsteil (MOSC, µC),, der nur während eines Vollbetriebs der Steuerschaltung betriebsfähig ist und einen frequenzstabilen Hauptoszillator (MOSC) mit relativ hohem Stromverbrauch aufweist;
und mit einem Standby-Schaltungsteil (SBOC, FCR, GL, A, TIMER, WUP), der sowohl im Vollbetrieb als auch im Standby-Betrieb betriebsfähig ist und einen an sich frequenzungenauen, nachstimmbaren Standby-Oszillator (SBOSC) mit geringem Strombedarf aufweist;
wobei der Standby-Oszillator (SBOSC) während Aufweckzeiten unter Zuhilfenahme des Hauptoszillators (MOSC) nachstimmbar ist. - Steuerschaltung nach Anspruch 1,a. wobei deren Vollbetriebsschaltungsteil eine Steuereinrichtung aufweist;b. wobei deren Standby-Schaltungsteil eine Frequenzsteuereinrichtung (FCR), in der ein die Oszillatorfrequenz des Standby-Oszillator (SBOSC) steuerndes Frequenzsteuersignal (FCS) speicherbar ist, und eine von einem Ausgangssignal (SBCLK) des Standby-Oszillators (SBOSC) gesteuerte Aufweckeinrichtung (WUP), mittels welcher während der Aufweckzeiten jeweils mindestens die Steuereinrichtung und der Hauptoszillator (MOSC) in den Vollbetrieb bringbar sind, aufweist;c. mit einer Frequenzmeßeinrichtung (GL, A, TIMER), mittels welcher während der Aufweckzeiten jeweils eine Messung der Oszillator-Ist-Frequenz (SBCLK) des Standby-Oszillators (SBOSC) durchführbar ist; undd. mit einer Frequenzkorrektureinrichtung, mittels welcher die während der jeweiligen Aufweckzeit gemessene Oszillator-Ist-Frequenz mit einer Oszillator-Soll-Frequenz vergleichbar ist und mittels welcher ein von dem jeweiligen Vergleichsergebnis abhängendes korrigiertes Frequenzsteuersignal (FCS) erzeugbar und jeweils als neues Frequenzsteuersignal (FCS) in die Frequenzsteuereinrichtung einspeicherbar ist.
- Steuerschaltung nach Anspruch 1 oder 2,
mit einer Zustandsüberwachungseinrichtung (WUP), mittels welcher im Standby-Betrieb der Steuerschaltung die jeweiligen Zustände vorbestimmter Sensoren und/oder Detektoren und/oder andersartiger elektrischer Einrichtungen überwachbar und die Steuerschaltung bei der Feststellung vorbestimmter Zustände in den Vollbetrieb rückschaltbar ist. - Steuerschaltung nach Anspruch 2 oder 3,
bei welcher die Steuereinrichtung einen Mikrocontroller (µC) mit mindestens einem Interrupteingang (INT) aufweist, über den der Mikrocontroller (µC) aus dem Standby-Betrieb in den Vollbetrieb rückschaltbar ist. - Steuerschaltung nach einem der Ansprüche 1 bis 4,
bei welcher die Frequenz des Standby-Oszillators (SBOSC) mittels eines digitalen Frequenzsteuersignals (FCS) steuerbar ist. - Steuerschaltung nach Anspruch 5,
bei welcher der Standby-Oszillator (SBOSC) einen Rampengenerator mit in Abhängigkeit von dem digitalen Frequenzsteuersignal (FCS) umschaltbarer Rampensteilheit aufweist. - Steuerschaltung nach Anspruch 6,
bei welcher der Rampengenerator eine Kapazität (C) umfaßt, die periodisch abwechselnd mittels einer Stromquellenschaltung (S1 bis S4) aufladbar und mittels einer Entladeeinrichtung (SW1) entladbar ist, wobei die Stromquellenschaltung (S1 bis S4) eine zu der Kapazität (C) in Reihe geschaltete, die Grundfrequenz des Standby-Oszillators (SBOC) bestimmende Hauptstromquelle (S1) und mehrere der Hauptstromquelle (S1) parallel geschaltete, unterschiedlich gewichtete Abstimmstromquellen (S2 bis S4) aufweist, zu jeder der Abstimmstromquellen (S2 bis S4) ein in Abhängigkeit von dem Frequenzsteuersignal (FCS) steuerbarer Schalter (SW2 bis SW4) in Reihe geschaltet ist. - Steuerschaltung nach Anspruch 7,
bei welcher die einzelnen Abstimmstromquellen (S2 bis S4) eine dem Dualzahlensystem entsprechende Stromstärkenwichtung aufweisen. - Steuerschaltung nach einem der Ansprüche 5 bis 8,
bei welcher die Frequenzsteuereinrichtung ein Frequenzsteuersignalregister (FCR) aufweist, in dem das jeweils von der Frequenzvergleichseinrichtung gelieferte digitale Frequenzsteuersignal (FCS) speicherbar ist und dessen Speicherinhalt die jeweilige Frequenz des Standby-Oszillators (SBOC) bestimmt. - Steuerschaltung nach einem der Ansprüche 2 bis 9,
bei welcher die Frequenzmeßeinrichtung (GL, A, TIMER) eine Zeitfenstereinrichtung aufweist, mittels welcher innerhalb der jeweiligen Aufweckzeitdauer ein Zeitfenster (TF) mit einer von der Schwingungsperioden-Ist-Dauer des Standby-Oszillators (SBOSC) abhängenden Fensterdauer geöffnet, die Anzahl der während der Fensterdauer auftretenden Schwingungen des Hauptoszillators (MOSC) gezählt und der so erhaltene Zählwert mittels der Frequenzvergleichseinrichtung mit einem der Schwingungsperioden-Sol-I-Dauer des Standby-Oszillators (SBOSC) entsprechenden Referenzzählwert verglichen wird. - Steuerschaltung nach Anspruch 10,
bei welcher die Frequenzmeßeinrichtung (GL, A, TIMER) aufweist: eine Gatelogikeinrichtung (GL) mit einem Logikeingang (LE), der mit dem Ausgangssignal (SBCLK) des Standby-Oszillators (SBOSC) beaufschlagbar ist, und mit einem Logikausgang (LA), von dem ein Fenstersignal (GATE) abnehmbar ist;
eine UND-Verknüpfungsschaltung (A) mit einen mit einem Ausgang des Hauptoszillators (MOSC) gekoppelten ersten Eingang (E1), einem mit dem Logikausgang (LA) gekoppelten zweiten Eingang (E2) und einem Ausgang (Q), der mit einem Zähleingang (ZE) eines Zählers (TIMER) gekoppelt ist, mittels welchem die während einer Fensterdauer auftretenden Hauptoszillatorschwingungen zählbar sind. - Zentralverriegelungseinrichtung für ein Kraftfahrzeug,
mit mehreren elektrischen Schalterkontakten, die an verschiedenen Stellen des Kraftfahrzeugs befindlichen Verriegelungsschlössern zugeordnet sind und von denen bei einer Betätigung der Zentralverriegelungseinrichtung mindestens ein Teil seinen Schaltzustand ändert,
mit einer Steuerschaltung nach einem der Ansprüche 3 bis 11, mit deren Funktionsüberwachungseinrichtung (WUP) die Schaltzustände mindestens eines Teils der Schalterkontakte überwachbar sind und die bei der Feststellung während des Vollbetriebs, daß sich während einer vorbestimmten Zeitdauer keine Schaltzustandsänderungen ergeben haben und daher derzeit kein Steuerbedarf besteht, in den Standby-Betrieb umschaltbar ist, und die bei der Feststellung einer Änderung des Schaltzustandes mindestens eines der elektrischen Kontakte während des Standby-Betriebs in den Vollbetrieb rückschaltbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19618094 | 1996-05-06 | ||
DE19618094A DE19618094C2 (de) | 1996-05-06 | 1996-05-06 | Steuerschaltung mit nachstimmbarem Standby-Oszillator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0806713A1 EP0806713A1 (de) | 1997-11-12 |
EP0806713B1 true EP0806713B1 (de) | 2002-09-25 |
Family
ID=7793445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP97107367A Expired - Lifetime EP0806713B1 (de) | 1996-05-06 | 1997-05-05 | Steuerschaltung mit nachstimmbarem Standby-Oszillator |
Country Status (3)
Country | Link |
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US (1) | US5973617A (de) |
EP (1) | EP0806713B1 (de) |
DE (1) | DE19618094C2 (de) |
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US10071778B2 (en) * | 2015-12-31 | 2018-09-11 | Sierra Extreme | Torque stick apparatus and methods of use |
CN115709710B (zh) * | 2022-12-15 | 2023-09-05 | 江苏润石科技有限公司 | 车辆车身稳定控制方法、芯片及系统 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5557181A (en) * | 1978-10-20 | 1980-04-26 | Citizen Watch Co Ltd | Electronic watch |
CH620087B (de) * | 1979-03-09 | Suisse Horlogerie | Oszillator mit einem hochfrequenz-quarzresonator. | |
CH643106B (fr) * | 1980-11-26 | Suisse Horlogerie | Garde-temps comprenant une chaine de diviseurs au rapport de division ajustable. | |
US4631496A (en) * | 1981-04-06 | 1986-12-23 | Motorola, Inc. | Battery saving system for a frequency synthesizer |
JPS59162690A (ja) * | 1983-03-04 | 1984-09-13 | Nec Corp | 擬似スタテイツクメモリ |
JPH0683090B2 (ja) * | 1986-05-16 | 1994-10-19 | アルプス電気株式会社 | 通信装置 |
US5280650A (en) * | 1989-03-20 | 1994-01-18 | Motorola, Inc. | DSP based radio with diminished power requirements |
DE4015094A1 (de) * | 1990-05-11 | 1991-11-14 | Webasto Ag Fahrzeugtechnik | Fernwirkanlage, insbesondere zur ansteuerung von fahrzeugzusatzeinrichtungen |
DE4221142C2 (de) * | 1992-06-27 | 1998-02-19 | Kiekert Ag | Zentralverriegelungsanlage für ein Kraftfahrzeug |
FI95980C (fi) * | 1992-09-04 | 1996-04-10 | Nokia Mobile Phones Ltd | Menetelmä ja kytkentäjärjestely ajan mittaamiseksi tarkasti epätarkalla kellolla |
DE4302232A1 (de) * | 1993-01-28 | 1994-08-04 | Bosch Gmbh Robert | Vorrichtung zum Betreiben eines Mikroprozessors |
-
1996
- 1996-05-06 DE DE19618094A patent/DE19618094C2/de not_active Expired - Fee Related
-
1997
- 1997-05-05 EP EP97107367A patent/EP0806713B1/de not_active Expired - Lifetime
- 1997-05-06 US US08/851,872 patent/US5973617A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5973617A (en) | 1999-10-26 |
DE19618094C2 (de) | 1999-06-02 |
DE19618094A1 (de) | 1997-11-20 |
EP0806713A1 (de) | 1997-11-12 |
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