EP1269443B1 - Dispositif de communication infrarouge - Google Patents

Dispositif de communication infrarouge Download PDF

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Publication number
EP1269443B1
EP1269443B1 EP01914815A EP01914815A EP1269443B1 EP 1269443 B1 EP1269443 B1 EP 1269443B1 EP 01914815 A EP01914815 A EP 01914815A EP 01914815 A EP01914815 A EP 01914815A EP 1269443 B1 EP1269443 B1 EP 1269443B1
Authority
EP
European Patent Office
Prior art keywords
base unit
information
operator
unit
transmission
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
Application number
EP01914815A
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German (de)
English (en)
Other versions
EP1269443A2 (fr
Inventor
Günter JÄKEL
Helmut Wagatha
Herbert Kastenmeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruwido Austria GmbH
Original Assignee
Ruwido Austria GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ruwido Austria GmbH filed Critical Ruwido Austria GmbH
Publication of EP1269443A2 publication Critical patent/EP1269443A2/fr
Application granted granted Critical
Publication of EP1269443B1 publication Critical patent/EP1269443B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a method for bidirectional transmission of Infrared signals between a basic device and a large number of operating devices, the base unit sending out a start pulse in a successive sequence, which is received by all operating devices and from which everyone starts HMI device is assigned a time window within which it receives its information sends to the base unit.
  • EP 0 948 166 A1 A similar procedure for bidirectional transmission of radio or Infrared signals are also known from EP 0 948 166 A1.
  • EP 0 948 166 A1 a control signal is sent from the base unit to the control units assigns a time slot in addition to synchronization, within which they can send their information to the base unit. It
  • each operator panel is assigned an individual address through which the operating device can be addressed or also identified.
  • the base unit first sends its information when data is transmitted to an operator panel and then waits for a confirmation signal, then what connection to the next operator panel is established.
  • This method is comparatively complex and can therefore nothing to simplify of the transmission protocol.
  • the object of the invention is to provide a communication device create an error and with a very simple transmission protocol collision-free communication between a variety of operating devices and a basic device. In addition, with this transmission protocol low power consumption of the basic device and the control devices be guaranteed.
  • control units (2-5) per sequence send at least one predetermined pulse with reduced transmission power and that the base unit (1), provided that it has at least one pulse from it as is correctly recognized, information to the corresponding control unit (2, 3, 4 or 5) transmits, whereupon the control unit (2, 3, 4 or 5) in the following sequence reduced Transmit power is used and this process is repeated until the predetermined pulse reduced in the transmission power from the base unit (1) is no longer recognized as correct, whereupon the control unit (2, 3, 4 or 5) in in the following sequence with a transmission power increased by one level or its Maintains transmission power.
  • Is used when transmitting the infrared signal from the control unit to the base unit at least one bit or one pulse or a burst with a stepped down Emitted transmission power it can be seen from the whether the transmission power for the next transmission can be adjusted. Because this bit or this Pulse recognized by the base unit and then the base unit sends a confirmation signal to the operator panel, so that the operator panel receives the information for the to be able to radiate the next sequence with the reduced transmission power. In the The next sequence then becomes the corresponding bit or the predetermined one Radiated with further reduced transmission power, this process for as long is repeated until the corresponding bit or pulse from Base device is no longer recognized. In the absence of the confirmation signal, the Transmission power is then no longer reduced, but possibly one step higher posed. According to the invention, the transmission power of the individual operating devices can thus are automatically minimized, so that long service lives with battery-operated control units can be achieved.
  • This procedure not only extends the life of the batteries HMI devices, but also increases transmission security because of the transmission power is optimally set, which in turn causes mutual interference between the IR receivers of the individual IR controls is minimized.
  • a cycle therefore consists of a start pulse and a number of Time windows that correspond to the number of controls. A new cycle then starts again with a start impulse.
  • the length of a cycle is variable and depends on the number of controls. You will at the configuration of the base station. Depending on the type of individual control device the time length of the individual time windows can also vary be what will be set when configuring the base station can.
  • a start pulse is made on request of an HMI device triggered. This will reduce the power consumption of the Base station reduced, since a cycle is only triggered if at least an operating device has to send a message to the basic device.
  • the infrared communication between base and Control unit using a two-phase modulated carrier frequency which results in a high Transmission security is guaranteed. This is also a long range given the IR route, which gives the users of the control units a larger Have freedom of movement.
  • Another advantage is the low impairment from other sources, such as light, electromagnetic interference etc., since the two-phase modulated carrier frequency from other sources of interference is flawless can be distinguished and very low reception levels are sufficient. That is why the individual operator panels do not have to do that Base device must be aligned, as reflections on objects or walls of the room are sufficient to exchange a distinguishable signal.
  • buttons and for movement can be transmitted separately become. This can be done in the same time window of different cycles respectively; but it is also possible to view the information in different time frames to transmit the same cycle.
  • a time window for example that for the transmission of the movement, a additional brief information of the other time window, for example the state of the buttons, transfer and vice versa during transfer the buttons brief information about the movement. This gives you a faster response to changes, especially in game pads is of great importance.
  • a base device 1 is shown, the IR transmitter module 1s and an IR receiving module 1e.
  • the sent or received IR rays are indicated with an arrow.
  • the base device communicates with a large number of control units 2, 3, 4, 5, each also one IR transmitter module 2s, 3s, 4s, 5s and an IR receiver module 2e, 3e, 4e, 5e exhibit.
  • the number of operating devices is basically freely selectable and affects only the result below in connection with Fig. 3 described cycle time.
  • the base unit contains a microprocessor 6, which is an IR transmitter unit 7 controls and an IR receiving unit 7 ', which is also on the microprocessor 6 is connected.
  • the base unit also contains a Memory component, for example an EEPROM 8, and an interface 9, the can be a serial or parallel interface and the one to be controlled Device, e.g. a computer, not shown, is connected.
  • the operating device 2 also contains a microprocessor 10, an IR transmitter unit 11 and an IR receiving unit 12, each connected to the microprocessor 10 are connected.
  • the control unit 2 also contains one Memory module 13, which can also be an EEPROM, a power supply 14, e.g. a battery, as well as one or more "Interfaces" for controls, such as Keys 15, which are in principle electrical Are switches, as well as other input elements, such as motion detector 16 a mouse or joystick.
  • the pulses emitted by the transmitter module 1 s are labeled StS and are dispatched during a first period Tr and from receive all IR receiver modules within range.
  • This The start or trigger pulse has a predetermined length and is synchronized all operating devices. This is followed by a pause P with a likewise predetermined one Length.
  • a first time window F1 begins, in which the IR transmitter module a first operating device sends its message T1 to the IR receiving module 1 e of the base unit transmits.
  • the time window has F1 also a predefined length.
  • the IR receiver module 1e of the basic device receives these impulses, which are called StE on the receiving side.
  • a pause P whereupon the IR transmitter module of the second operating device sends its pulses T2 with a predetermined length in the time window F2, which are also received by the IR receiver module 1 e of the base unit.
  • the IR transmitter module of the second operating device sends its pulses T2 with a predetermined length in the time window F2, which are also received by the IR receiver module 1 e of the base unit.
  • the base unit sends a new trigger pulse in the next time window Tr, which starts a new cycle.
  • the individual can Cycles follow each other continuously. But it can also be provided be that a cycle is only followed by a new cycle or several cycles, if one of the operator panels sends a request signal to the base unit sent. The cycles can also be stopped if for a predetermined Number of cycles none of the operator panels transmit any information Has.
  • the time windows F1-F4 are each of the same length. It is but also possible to make the time window of different lengths, each HMI device can be programmed in an initialization phase, when, based on the start pulse, "its" time window begins and how long it is.
  • the base unit must of course have the same information so that it can receive it Can assign impulses to the respective operator panel.
  • the basic device the individual operating devices based on transmitted information, such as. a so-called device code, identified and not based on the time window assigned to the respective operator panel, in this case "white” every operating device, when "its" time window related to the start pulse begins and ends.
  • the base unit "white” in this variant is not soft Time window to which operator panel is assigned.
  • Fig. 4 shows the transmission protocol that takes place within a time window is sent.
  • a first bit 1 is that Start bit, which is always a logical "1" here. This is followed by five bits D5 ... D0, that identify the respective device, for example whether it is a Mouse, keyboard or other device. This is followed by a bit B0, which indicates the condition of the battery of the control unit. Is the battery voltage has dropped below a certain value, so a logical "0" transmitted, otherwise a "1".
  • Four bits S3, S2, S1 and S0 show the step size, i.e. the amount of mouse speed. Further Then follow four bits W3, W2, W1 and WO that represent the angle of the mouse movement represent.
  • buttons for example a "1" when a mouse button is pressed, and a "0" when the button is released. So that in the transmission protocol for the mouse movement also information about the buttons be sent, which increases the processing speed; there the next time window is not waited for, which is the full information contains via the buttons.
  • Fig. 4 In the second line of Fig. 4 is the transmission protocol for the keys shown. Also here are a start bit, five bits D5-DO for device detection, bit B0 for the battery status is present and twelve bits T11-T0 for the state of various buttons. Finally, here too Another bit Mx are sent, which signals whether the mouse or a joystick is moved (logical "1") or is not moved (logical "0").
  • any number of IR controls can be used interact with a basic device. Within one cycle all operating devices work quasi simultaneously, because the time offset of the Time window for the user is not noticeable.
  • the cycle time is determined by the length of the trigger information, the number of operator panels and the Information content (word length).
  • the maximum number of controls is in principle freely programmable and only affects the cycle time.
  • Information is transmitted from the base device to the control devices, for example Data on the functioning or update.
  • Fig. 5 also explains the type of modulation.
  • the respective transmitter modules send a carrier with a carrier frequency of here 56 kHz or a period of 17.9 us, and a burst contains 14 carrier pulses and thus one Duration of 250 us. A pause is also 250 us long.
  • a bit then has a length of 500 us. There is a logical "1" here from a burst (14 carrier pulses) and a pause. There is a logical "0" from a break and a burst.
  • the bottom line is an example specified for a data word of bit sequence 11001011.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)

Claims (6)

  1. Dispositif de transmission bidirectionnelle de signaux infrarouges entre un appareil de base et une pluralité d'appareils de service, l'appareil de base (1) émettant, selon une séquence de succession, une impulsion de départ (Tr) qui est captée par tous les appareils de service (2-5) et une fenêtre de temps (F1-F5), étant attribuée, en partant de celle-ci, à chaque appareil de service (2-5), fenêtre à l'intérieur de laquelle il envoie son information à l'appareil de base (1), caractérisé en ce que les appareils de service (2-5) émettent par séquence au moins une impulsion prédéterminée à puissance d'émission définie et en ce que l'appareil de base (1), dans la mesure où celui-ci a identifié comme correcte au moins une impulsion venant de lui, envoie à l'appareil de service (2, 3, 4 ou 5) correspondant une information, à la suite de quoi l'appareil de service (2, 3, 4 ou 5) utilise dans la séquence suivante une puissance d'émission diminuée et ce processus étant répété jusqu'à ce que l'impulsion prédéterminée, à puissance d'émission réduite, ne soit plus identifiée comme correcte par l'appareil de base (1), suite à quoi alors l'appareil de service (2, 3, 4 ou 5), lors de la séquence suivante, émet avec une puissance d'émission augmentée de la valeur d'un degré, ou bien conserve sa puissance d'émission.
  2. Procédé selon la revendication 1, caractérisé en ce que l'impulsion de départ (Tr) de l'appareil de base (1) est déclenchée à la survenance d'une requête émanant d'un appareil de service (2, 3, 4 ou 5).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on utilise une fréquence porteuse modulée à deux phases pour effectuer la transmission.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les informations des différents appareils de service (2-5) sont réparties sur plusieurs fenêtres de temps, ne se suivant pas directement.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, dans le cas des appareils de service (2-5) ayant plusieurs fonctions, telles que par exemple des fonctions de palpage et des fonctions de déplacement, lors de la fenêtre de temps (F1-F5) affectée pour la transmission d'une première fonction, une information courte est transmise pour l'autre fonction.
  6. Procédé selon l'une des revendications 2 à 5, caractérisé en ce que des cycles, commençant par une impulsion de départ (Tr), sont répétés jusqu'à ce qu'aucune sorte d'information ne soit plus reçue par l'appareil de base (1), pendant un nombre prédéterminé de cycles.
EP01914815A 2000-03-27 2001-03-23 Dispositif de communication infrarouge Expired - Lifetime EP1269443B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10014595 2000-03-27
DE10014595A DE10014595A1 (de) 2000-03-27 2000-03-27 Infrarot-Kommunikationseinrichtung
PCT/AT2001/000087 WO2001073719A2 (fr) 2000-03-27 2001-03-23 Dispositif de communication infrarouge

Publications (2)

Publication Number Publication Date
EP1269443A2 EP1269443A2 (fr) 2003-01-02
EP1269443B1 true EP1269443B1 (fr) 2004-03-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01914815A Expired - Lifetime EP1269443B1 (fr) 2000-03-27 2001-03-23 Dispositif de communication infrarouge

Country Status (4)

Country Link
EP (1) EP1269443B1 (fr)
AU (1) AU2001242086A1 (fr)
DE (2) DE10014595A1 (fr)
WO (1) WO2001073719A2 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106309B2 (de) * 1971-02-10 1973-01-25 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart Verfahren und anlage zum drahtlosen steuern von mindestens zwei objekten ueber nur einen hochfrequenzkanal
DE3119876A1 (de) * 1981-05-19 1982-12-16 Wilhelm Ruf KG, 8000 München "infrarot-sende-empfangssystem"
US5297144A (en) * 1991-01-22 1994-03-22 Spectrix Corporation Reservation-based polling protocol for a wireless data communications network
FI98675B (fi) * 1995-02-17 1997-04-15 Nokia Telecommunications Oy Aikavälien allokoiminen matkaviestinjärjestelmässä
US5881366A (en) * 1996-05-01 1999-03-09 Logitech, Inc. Wireless peripheral interface
KR20000069175A (ko) * 1997-09-30 2000-11-25 이데이 노부유끼 무선 통신 방법 및 무선 통신 장치
WO1999027662A2 (fr) * 1997-11-21 1999-06-03 Maxim Integrated Products, Inc. Communications optiques a gain variable

Also Published As

Publication number Publication date
WO2001073719A3 (fr) 2002-04-04
WO2001073719A2 (fr) 2001-10-04
DE50101608D1 (de) 2004-04-08
EP1269443A2 (fr) 2003-01-02
DE10014595A1 (de) 2001-10-11
AU2001242086A1 (en) 2001-10-08

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