DE4417973A1 - IR remote control for automobile centralised locking system - Google Patents
IR remote control for automobile centralised locking systemInfo
- Publication number
- DE4417973A1 DE4417973A1 DE19944417973 DE4417973A DE4417973A1 DE 4417973 A1 DE4417973 A1 DE 4417973A1 DE 19944417973 DE19944417973 DE 19944417973 DE 4417973 A DE4417973 A DE 4417973A DE 4417973 A1 DE4417973 A1 DE 4417973A1
- Authority
- DE
- Germany
- Prior art keywords
- remote control
- semiconductor laser
- receiver
- filter
- locking system
- 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.)
- Ceased
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00785—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by light
Abstract
Description
Die Erfindung betrifft eine IR-Fernsteuerung gemäß Oberbe griff des Patentanspruchs 1 (IR = Infrarot).The invention relates to an IR remote control according to Oberbe handle of claim 1 (IR = infrared).
Bereits vorgeschlagene IR-Fernsteuerungen besitzen heute ein breites Einsatzgebiet. Unter anderem werden sie auch zur ferngesteuerten Öffnung von Automobilen benutzt. Als IR-Sendeelemente dienen zur Zeit ausschließlich Lumines zensdioden (LED) hoher spektraler Bandbreite. Sie werden dazu benutzt, eine codierte IR-Impulsfolge auszusenden, die von einem IR-Empfänger aufgenommen und decodiert wer den, um so die Entriegelung z. B. des Kraftfahrzeuges durchzuführen. Diese Anordnungen weisen keine große spek trale Selektivität auf, so daß mit Hilfe einfacher Aufbau ten ein unberechtigtes Öffnen in der Regel möglich ist. IR remote controls already proposed have today a wide range of applications. Among other things, they will too used for remote controlled opening of automobiles. When IR transmitters are currently used only for Lumines zens diodes (LED) with high spectral bandwidth. you will be used to send out a coded IR pulse train, which are picked up and decoded by an IR receiver the, so the unlocking z. B. the motor vehicle perform. These arrangements do not have much spec central selectivity, so that with the help of simple structure unauthorized opening is generally possible.
Die Aufgabe der Erfindung besteht darin, eine IR-Fern steuerung anzugeben, die möglichst sicher gegen unbefugten Gebrauch geschützt ist.The object of the invention is an IR remote control to indicate the safest possible against unauthorized persons Use is protected.
Die erfindungsgemäße Lösung der Aufgabe ist durch die kennzeichnenden Merkmale des Patentanspruchs 1 wiedergege ben, die übrigen Ansprüche enthalten vorteilhafte Aus- und Weiterbildungen (Ansprüche 2 und 3) sowie eine bevorzugte Anwendung (Anspruch 4) der Erfindung.The achievement of the task is by characteristic features of claim 1 reproduced ben, the remaining claims contain advantageous training and Developments (claims 2 and 3) and a preferred one Application (claim 4) of the invention.
Ein erster wesentlicher Vorteil der Erfindung besteht dar in, daß durch die Verwendung eines Halbleiterlasers auf Senderseite und eines entsprechend darauf abgestimmten Filters auf der Empfangsseite eine zusätzliche Wellenlän gencodierung der Fernbedienung möglich ist, die sehr zu verlässig gegen Mißbrauch schützt.A first major advantage of the invention is in that by using a semiconductor laser Transmitter side and a correspondingly matched one Filters on the receiving side an additional wavelength remote control is possible reliably protects against abuse.
Ein weiterer Vorteil ist in der Verwendung von Halbleiter lasern mit niedrigem Schwellstrom zu sehen, da diese Laser einen vergleichsweise hohen Wirkungsgrad haben, woraus ein vergleichsweise geringer Stromverbrauch der Sendeeinheit resultiert.Another advantage is the use of semiconductors see lasers with low threshold current as these lasers have a comparatively high efficiency, from which a comparatively low power consumption of the transmitter unit results.
Im folgenden wird die Erfindung anhand der Fig. 1 näher erläutert, die ein bevorzugtes Ausführungsbeispiel der er findungsgemäßen IR-Fernsteuerung zeigt.The invention is explained in more detail below with reference to FIG. 1, which shows a preferred exemplary embodiment of the IR remote control according to the invention.
Die Fernsteuerung besteht auf der Senderseite aus einer Codierung 1 und einem nachgeschalteten Halbleiterlaser 2, der vorzugsweise durch einen niedrigen Schwellstrom cha rakterisiert ist. Auf der Empfängerseite ist ein IR-Filter 4 (vorzugsweise ein schmalbandiges Bandpaßfilter), ein nachgeschalteter IR-Empfänger 5 und eine dem Empfänger 5 nachgeschaltete Decodierung 6 vorgesehen. Der innere Auf bau all dieser Bauelemente 1, 2 und 4 bis 6 ist an sich bereits bekannt und nicht Gegenstand dieser Erfindung, weshalb an dieser Stelle darauf auch nicht weiter ein gegangen wird.The remote control consists on the transmitter side of a coding 1 and a downstream semiconductor laser 2 , which is preferably characterized by a low threshold current cha. An IR filter 4 (preferably a narrow-band bandpass filter), a downstream IR receiver 5 and a decoding 6 downstream of the receiver 5 are provided on the receiver side. The inner construction of all these components 1 , 2 and 4 to 6 is already known per se and is not the subject of this invention, which is why it will not be discussed further at this point.
Statt einer an sich bekannten LED wird in diesem Ausfüh rungsbeispiel ein Halbleiterlaser 2 mit niedrigem Schwell strom als Sendeelement eingesetzt, der im Vergleich zur LED eine geringe spektrale Bandbreite besitzt und dessen Emissionsmaximum durch die angebrachten Verspiegelungs schichten in gewissen Grenzen variiert werden kann. Die vom Halbleiterlaser 2 ausgesendete und von der Codierung 1 zuvor codierte IR-Impulsfolge 3 gelangt zu dem IR-Empfän ger 5, der am Eingang das IR-Bandpaß-Filter 4 besitzt, dessen Durchlaßbereich auf den spektralen Emissionsbereich des Halbleiterlasers 2 abgestimmt ist. Das Empfangssignal wird (in der Decodierung 6) wiederum decodiert und zur Öf fnung z. B. eines Fahrzeuges benutzt. Im Gegensatz zu bis her vorgeschlagenen Anordnungen besteht bei der Anordnung nach der Figur nun die Möglichkeit einer zusätzlichen Wel lenlängencodierung, wodurch eine erhöhte Sicherheit gegen über unberechtigtem Öffnen erzielt wird. Darüber hinaus weisen hier zweckmäßigerweise einzusetzende Halbleiterla ser mit niedrigem Schwellstrom einen höheren optischen Wirkungsgrad auf, woraus ein geringerer Stromverbrauch der Sendeeinheit insgesamt resultiert.Instead of an LED known per se, a semiconductor laser 2 with a low threshold current is used as a transmission element in this embodiment, which has a low spectral bandwidth compared to the LED and whose emission maximum can be varied within certain limits by the applied reflecting layers. The emitted by the semiconductor laser 2 and previously coded by the coding 1 IR pulse train 3 arrives at the IR receiver 5 , which has the IR bandpass filter 4 at the input, whose pass band is matched to the spectral emission range of the semiconductor laser 2 . The received signal is in turn decoded (in decoding 6 ) and for opening z. B. used a vehicle. In contrast to the arrangements proposed up to now, there is now the possibility of an additional shaft length coding in the arrangement according to the figure, as a result of which increased security against unauthorized opening is achieved. In addition, semiconductor lasers with a low threshold current which are expediently used have a higher optical efficiency, which results in lower overall power consumption of the transmitter unit.
Die Erfindung ist nicht auf das zuvor beschriebene Ausfüh rungsbeispiel beschränkt, sondern vielmehr auch auf wei tere übertragbar. So ist es z. B. möglich, das IR-Filter in den IR-Empfänger zu integrieren.The invention is not based on the previously described embodiment Example limited, but rather also on white tere transferable. So it is z. B. possible, the IR filter in to integrate the IR receiver.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944417973 DE4417973A1 (en) | 1994-05-21 | 1994-05-21 | IR remote control for automobile centralised locking system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944417973 DE4417973A1 (en) | 1994-05-21 | 1994-05-21 | IR remote control for automobile centralised locking system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4417973A1 true DE4417973A1 (en) | 1995-11-23 |
Family
ID=6518764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19944417973 Ceased DE4417973A1 (en) | 1994-05-21 | 1994-05-21 | IR remote control for automobile centralised locking system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4417973A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649596A1 (en) * | 1996-11-29 | 1998-06-04 | Deutsche Telekom Ag | Device for controlling a device comprising a screen |
DE10006038A1 (en) * | 2000-02-10 | 2001-08-16 | Abb Patent Gmbh | Control system for electrical or electronic device uses logic circuit providing 2 different control pulses with differing durations dependent on illumination of sensor rail with light-sensitive semiconductor elements |
WO2005024752A1 (en) * | 2003-08-29 | 2005-03-17 | Niles Audio Corporation | Infrared remote control receiver and method |
NL1026825C2 (en) * | 2004-08-11 | 2006-02-14 | Target Automotive B V | Remote operating device is for operating an object at distance and comprises at least one receiver, to which selection component is coupled together with actuator |
-
1994
- 1994-05-21 DE DE19944417973 patent/DE4417973A1/en not_active Ceased
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649596A1 (en) * | 1996-11-29 | 1998-06-04 | Deutsche Telekom Ag | Device for controlling a device comprising a screen |
DE10006038A1 (en) * | 2000-02-10 | 2001-08-16 | Abb Patent Gmbh | Control system for electrical or electronic device uses logic circuit providing 2 different control pulses with differing durations dependent on illumination of sensor rail with light-sensitive semiconductor elements |
WO2005024752A1 (en) * | 2003-08-29 | 2005-03-17 | Niles Audio Corporation | Infrared remote control receiver and method |
NL1026825C2 (en) * | 2004-08-11 | 2006-02-14 | Target Automotive B V | Remote operating device is for operating an object at distance and comprises at least one receiver, to which selection component is coupled together with actuator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8120 | Willingness to grant licenses paragraph 23 | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AEROSPACE AKTIENGESELLSCHAFT, 8099 |
|
8131 | Rejection |