EP0929947A2 - Systeme de communication - Google Patents

Systeme de communication

Info

Publication number
EP0929947A2
EP0929947A2 EP96945984A EP96945984A EP0929947A2 EP 0929947 A2 EP0929947 A2 EP 0929947A2 EP 96945984 A EP96945984 A EP 96945984A EP 96945984 A EP96945984 A EP 96945984A EP 0929947 A2 EP0929947 A2 EP 0929947A2
Authority
EP
European Patent Office
Prior art keywords
communication unit
data signal
receiving
zke
data
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
Application number
EP96945984A
Other languages
German (de)
English (en)
Inventor
Frank Basner
Wolfgang Zilias
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0929947A2 publication Critical patent/EP0929947A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/039—Accessories therefor, e.g. mouse pads
    • G06F3/0395—Mouse pads
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
    • H04B5/48—
    • H04B5/72—
    • H04B5/79—

Definitions

  • the invention relates to a communication system according to the preamble of claim 1.
  • Such a communication system is known from EP 05 39 696 AI.
  • a bidirectional data transmission can only be carried out there in half-duplex mode.
  • the coding-evaluated half-wave utilization of the transmitted carrier wave results in a successive outward and backward transmission provided with a short break. It takes place in everyone positively spaced half-wave arrangement (value 1) a transmission and in every zero wave time (value 0) a retransmission is carried out by means of the energy from a discharge capacitor in the peripheral communication unit.
  • the capacitor is charged in the transmission-free time of the peripheral communication unit and discharged in its transmission time (zero-wave time).
  • the known solution has a load in the peripheral communication unit on which there are energy dips (coding 0) due to the current flow as a result of the data signal output by the microcontroller, which have to be bridged by the charged capacitor by discharging it. Since there is always an interruption after a program, there is a loss of time due to the pauses.
  • a communication system for electromagnetic waves, in particular for radio waves or microwaves, is described in DE 39 28 561 A1, which consists of a power-supplied and a power-dependent, ie non-battery-powered communication unit, which together provide a specific data or Show information traffic.
  • a receiving / transmitting device of the peripheral communication unit dependent on the power supply both the energy for the electrical supply and the energy for carrying out a bidirectional data or information traffic are transmitted by the power-supplied central communication unit.
  • the central power-supplied communication unit essentially has a generator for generating a carrier shaft, a modulation device for modulating the carrier shaft generated by the generator with a data signal to be transmitted, wherein in the following the resulting wave is referred to as a data signal-modulated wave, as well as a transmission antenna for transmitting a transmission data signal-modulated wave emitted by the modulation device, a reception antenna for receiving the transmission data signal-modulated wave emitted by the transmission antenna of the power supply-dependent communication unit and at least one demodulation device Demodulation of the data signal from the transmission data signal modulated wave received via the receiving antenna.
  • the peripheral power supply-dependent communication unit contains a receiving antenna for receiving the data signal modulated wave, the carrier wave of which is phase or frequency modulated with the data signal, a demodulation device for demodulating the data signal from the data signal modulated wave received via the receiving antenna, and a rectifier device for Rectifying the carrier wave of the data signal modulated wave received via the receiving antenna and for generating a DC voltage.
  • the DC voltage is used for the power supply and thus for the operation of the peripheral communication unit.
  • This communication unit also contains a multiplication device for generating a predetermined harmonic component from the carrier wave of the data-signal-modulated wave received via the receiving antenna, a modulation device for amplitude modulation of the harmonic component with a data signal to be emitted and a transmission antenna for emitting one of them Modulation device emitted data signal modulated wave.
  • a disadvantage of the known communication system is that for the transmission of the carrier wave modulated with the data signal from the central communication unit to the peripheral communication unit and the retransmission Via two transmitting antennas and one receiving antenna in each of the two communication units, two different transmission channels are provided, which in both communication units show extensive component-related and technological effort.
  • Another problem is that the two carrier waves transmitted in the opposite direction differ as a result of the second harmonic component generated by the multiplication device in the peripheral communication unit with twice the carrier frequency as the returned carrier wave compared to the transmitted carrier wave.
  • the return carrier wave is amplitude-modulated and retransmitted in the modulation device of the peripheral communication unit with a data signal or digital signal, which constitutes a further additional expenditure in terms of components.
  • the known communication system consists of a central and at least one peripheral communication unit, the central communication unit containing a receiving device and the peripheral communication unit containing a transmitting device.
  • the central communication unit is a computer system consisting of a computer and an adapter connected to it, and the peripheral, battery-powered communication unit is an electronic mouse that can be operated by actuating at least one of its microswitches.
  • the data transmission between the electronic mouse and the adapter of the computer system takes place by means of the magnetic coupling with a magnetically coupled coupling part in each case in the mouse and in the adapter.
  • the adapter is a circuit adapted to the signal transmission from the mouse and an extended circuit Computer interface.
  • the mouse is provided, for example, with a coding device which generates a digital position signal which characterizes the movement of the mouse on a base belonging to the adapter, and the first magnetic coupling part, a transmission coil.
  • the adapter of the computer is designed with the second magnetic coupling part of a receiving coil designed as an antenna and a data decoding device for digital signals.
  • the first and the second magnetic coupling part are coupled in such a way that communication, ie transmission of the data from the electronic mouse to the adapter, is made possible.
  • the electronic mouse communicates with the adapter preferably by means of low-current Schwa ⁇ hstrom signals.
  • the adapter is connected to the computer via a cable, through which all communication is logged.
  • the adapter can be connected to the computer by a serial connection (interface RS 232) or by a bus adapter, to which the decoded data is communicated.
  • the mouse housing there is also a chamber for the use of at least one battery, which is provided for power supply and for energy supply for data transmission to the adapter.
  • the mouse has, for example, a ball cage for a trackball with at least two position sensors and the microswitch for user actuation.
  • the transmitter coil is fastened above the mouse base plate in the form of a transmitter coil, preferably with several turns of the conductor wire.
  • An upper key plate can be attached to the mouse base plate, whereby the electronic mouse can be locked. Due to discharge processes in the batteries, the system does not always provide the mouse with the discharge processes for carrying out communication. Due to the battery power supply, there are a relatively large number of components in the mouse housing, for example clock generator, booster amplifier and finally also the battery, which weigh down the mouse and thus restrict easy operation.
  • Another problem is that the battery of the known electronic mouse has to be disposed of after use in processing plants or processes.
  • the object of the invention is to create a communication system with a central and at least one peripheral communication unit which is available at all times, ready for communication and easy to operate.
  • a further task is to reduce the outlay on components and costs in the construction of the communication units and to avoid the use of batteries in the peripheral communication units which are expensive to dispose of.
  • the magnetic coupling is carried out by means of a band filter containing the coils, that the data traffic from the peripheral communication unit PKE to the central communication unit ZKE via the wave of the predetermined frequency by detuning or changing the load on the PKE.
  • a provision circuit is provided in which the modulation data signal of the central communication unit is subtracted from the signal supplied by the demodulation device is so that on the output side a differential data signal can be forwarded as a data signal from the peripheral communication unit for processing into the central communication unit.
  • the transmission / reception device of the central communication unit is present in a preferably cable-connected communicator.
  • the communicator consists essentially of a generator and a driver stage for generating the carrier wave of frequency (f), from which the ZKE data signals modulating device modulating the carrier wave, from which a transmit / receive coil (L1) and a capacitor (Cl ) containing LC resonant circuit, the generator, the driver stage, the modulation device and the resonant circuit being connected in the order mentioned, from a central logic circuit which transmits the ZKE data signals to the modulation device, the data signals can be transmitted via data lines of an interface cable, and from the demodulation device.
  • the demodulation device is connected to the LC resonant circuit and is designed in such a way that the demodulated data signals of the data signal-modulated wave applied to it can be forwarded to the logic circuit.
  • the central logic circuit is connected on the input side to the demodulation device and the cable-guided, preferably serial interface, and on the output side to the modulation device.
  • a subtracting logic circuit can also be integrated in the peripheral communication unit, which like the central logic circuit is either interconnected from components or is program-technically contained in a microcomputer, in particular in assigned, interconnected memory modules.
  • the peripheral communication unit is structurally separate and has a receiving / transmitting device which contains the LC resonant circuit, a rectifier device connected to the LC resonant circuit for generating a direct voltage (UG) for further electronic components from the transmitted unmodulated or data signal-modulated wave.
  • UG direct voltage
  • the communication units can each have a single transmit / receive coil or receive / transmit coil for unidirectional energy and bidirectional data transmission, the coil (L1; L2) with a capacitor (C1; C2) preferably being one Parallel resonant circuit is switched and both mutually assigned resonant circuits are tuned to resonance and operate according to the rules of the band filter dimensioning.
  • the central communication unit can be a computer with the communicator, which is cabled via the preferably serial interface, with its transmitting / receiving device.
  • the peripheral communication units with their receiving / transmitting device preferably provide peripheral XY position control devices, preferably a mouse, game lever, control stick or keyboards or the like. represents.
  • the cable-guided communicator is preferably integrated as an electronic assembly in a base for the peripheral communication unit that can be placed on the base.
  • the base of the communicator is in particular plate-shaped and preferably contains at least one conductor loop in the edge region of its circumference, which is designed as a transmitting / receiving coil.
  • the components of the receiving / transmitting device of the peripheral communication unit are mostly contained in an electronic assembly, the LC resonant circuit consisting of the receiving / transmitting coil (L2) preferably placed outside the electronic assembly, but inside the communication unit, and preferably in the capacitor (C2) located in the electronic assembly.
  • the LC resonant circuit consisting of the receiving / transmitting coil (L2) preferably placed outside the electronic assembly, but inside the communication unit, and preferably in the capacitor (C2) located in the electronic assembly.
  • the magnetically coupled coils (L1, L2) of the transmitting / receiving device and the receiving / transmitting device are directed parallel to one another in cross-section, the receiving / transmitting coil (L2) having a smaller, identical or larger cross-sectional dimension than the transmitting / receiving coil (L1) and can preferably be moved within the transmitting / receiving coil (Ll) with a smaller cross-sectional dimension in the flat area of the base.
  • the communication system according to the invention works according to the following method according to the invention for communication between the central communication unit and a peripheral communication unit:
  • both the transmission of energy for supplying power to the peripheral communication unit and the data traffic between the coils are magnetically coupled between two coils - see the central communication unit and the peripheral Communication unit carried out by subtracting at the same time in the logic circuit the ZKE data signal present in it from the demodulated data signals of the transmitted ZKE data signal-modulated carrier wave and the PKE data signal-modulated carrier wave and the resulting differential data signal being fed to the central communication unit.
  • bidirectional data traffic can be carried out via the bandpass filter by means of the carrier wave of a predetermined frequency.
  • the bidirectional communication can be carried out in the following steps:
  • the carrier wave (f) which is preferably coded in the communicator with the data signal, is transmitted to the receiving / transmitting device with the coil via the transmitting / receiving device of the communicator with the coil (L1). L2) of the peripheral communication unit as a data signal modulated wave.
  • the energy required to operate the receiving / transmitting device and other electronic components is generated in the form of current and direct voltage (UG) by the rectifier device from the applied data signal-modulated wave.
  • the applied data signal-modulated wave is fed to a demodulation device, demodulated and the decoded data signal is processed in a microcontroller of the peripheral communication unit.
  • the data signals output by the microcontroller are modulated in the modulation device on the carrier wave of the same frequency (f), sent via the receive / transmit coil (L2) and received in the magnetically coupled transmit / receive coil (L1) applied to the demodulation device
  • Data signal modulated wave is demodulated and decoded.
  • the data signals provided on the output side by the logic circuit subtracting the existing data signals from the demodulated data signals are fed as data signals to the microprocessor of the central communication unit for processing.
  • the unmodulated carrier wave of the predetermined frequency (f) generated in the communicator cannot be received by the receiving / transmitting device of the peripheral communication unit and can also be used to supply power to electronic components, in particular, when the central communication unit does not communicate via the magnetic coupling (L1, L2) of the microcontroller are rectified.
  • the carrier wave transmitted unmodulated by the central communication unit can thus also serve as a carrier wave for the PKE data signals, which are provided by the microcontroller of the peripheral communication unit and fed to the communicator.
  • the invention opens up the possibility of one of the two communication units, in particular, of the data transmission / reception device and data reception / transmission device which are inductively separated from one another spatially or in one plane and which can communicate with one another in both directions the peripheral communication unit without its own energy supply from a battery, from its own power supply or the like. is trained.
  • the reduced weight of the peripheral communication unit, in particular the mouse, makes handling easier.
  • the invention can accordingly be used for data processing systems which work with movable peripheral communication units.
  • Another advantage is that the electromagnetic field of the communicator is largely limited territorially to the range of movement of the respective power supply-dependent peripheral communication unit. It is advantageous that it is possible to work in a frequency range in which information and files on floppy disks, which can be in the vicinity of the communicator and peripheral communication unit, are not distorted or deleted.
  • FIG. 1 shows a schematic representation of a communication system according to the invention
  • FIG. 2 shows a schematic block diagram of a central and a peripheral communication unit for unidirectional power supply and for data traffic, using the example of one with a communicator
  • FIG. 2 is a circuit diagram of the communicator of FIG. 2;
  • Fig. 4 is a circuit diagram of the peripheral communication unit according to Fig. 2 and
  • FIG. 5 shows a schematic block diagram of the peripheral communication unit with an associated subtracting logic circuit.
  • the communication system 8 shown in FIGS. 1 and 2 consists of a central communication unit ZKE 1,4 and a wireless peripheral communication unit PKE 11, which are connected to each other via an electromagnetic coupling and data traffic via a wave of a predetermined frequency have f.
  • the central communication unit ZKE 1,4 and a wireless peripheral communication unit PKE 11, which are connected to each other via an electromagnetic coupling and data traffic via a wave of a predetermined frequency have f.
  • I contains its own power supply and a transceiver 7.
  • the transmitting / receiving device 7 and the receiving / transmitting device 14 each have at least one modulation device 18, 26 and one demodulation device 20, 25 for data signals and at least one magnetically coupled coil 10, 12 that can be moved relative to the other.
  • a unidirectional energy transmission for the power supply of the peripheral communication unit 11 is present.
  • the magnetic coupling is carried out by means of a band filter 15, 27 containing the coils 10, 12.
  • the data traffic from the PKE 11 to the ZKE 1.4 takes place via the wave of the predetermined frequency by detuning or changing the load on the PKE-side LC oscillation circuit 27.
  • the resulting amplitude changes on the ZKE-side LC oscillation circuit 15 are caused by the The demodulation device 20 connected there is demodulated together with the modulated data signal sent by the ZKE 1,4.
  • a logic circuit 19 is provided in the ZKE 1,4, in which the modulation data signal of the ZKE 1,4 is subtracted from the signal supplied by the demodulation device 20, so that the differential data signal on the output side is processed as the data signal of the PKE 11 for processing ZKE 1.4 is forwardable.
  • a communicator 4 is connected to the central communication unit in the form of a computer system 1 by means of a cable 2, which has the transmission / reception device 7.
  • the computer 1 has its own power supply and is capable of data traffic to the associated peripheral communication unit 11, which e.g. can be a mouse that contains an assembly 13 equipped with electronic components.
  • the mouse 11 is designed to be power-dependent and wireless to the computer 1 and communicator 4 and contains a receive / transmit device 14 in the assembly 13.
  • the computer system 1 together with the cable-connected communicator 4 and the mouse 11 each have in their transmitting / receiving device 7 or receiving / transmitting device 14 a transmitting / receiving coil (L1) 10 or receiving / transmitting coil (L2) 12 comprising at least one conductor loop , which are magnetically coupled to one another (see FIG. 2).
  • the connected demodulation devices 20, 25 are respectively connected upstream and downstream of the coils (L1) 10 and (L2) 12, which also applies to the respectively assigned modulation device 18 and 26 applies.
  • the data traffic between the two corresponding transmitting / receiving devices 7 and 14 can be carried out bidirectionally simultaneously via the two magnetically coupled coils (L1), (L2) 10, 12.
  • the magnetically coupled coils (L1), (L2) 10, 12 of the transmitting / receiving device 7 and the receiving / transmitting device 14 are preferably oriented parallel to one another in terms of cross section, the receiving / transmitting coil (L2) 12 depending on the peripheral Communication unit 11 can have a smaller, equal or larger cross-sectional dimension than the transmission / reception coil (L1) 10 and can preferably be moved within the transmission / reception coil (L1) 10 with a smaller cross-section dimension in a larger area.
  • the peripheral, power supply-dependent communication units can preferably peripheral XY position control devices, preferably mouse 11, game lever, joystick, also keyboards or the like. his.
  • the computer 1 is in detail via a serial interface 9 on the back of the computer 1 with the communicator 4 connected by means of a cable 2.
  • the communicator 4 contains a preferably plate-shaped base (pad) 5, which is generally on a horizontal plate and preferably has at least one closed conductor loop 10 in the peripheral region 6 of its circumference, which, in the case of a plurality of turns, also acts as a transmission / Reception coil 10 can be formed, as well as an electronic assembly 3 placed on or in the base 5, on which a transmitting / receiving device 7 is attached, which is connected to the transmitting / receiving coil (L1) 10 is. All other components of the transmitting / receiving device 7 are contained in the electronic assembly 3.
  • the conductor loop or the transmission / reception coil (L1) 10 can be printed on the base 5 or incorporated into the base 5.
  • Fig. 1 is a top view of the base 5 of the communicator 4 a schematically illustrated mouse 11, which as a peripheral, power supply-dependent communication unit does not have its own power supply. Accordingly, the mouse 11 has, for example, neither a connecting cable to the communicator 4 nor directly to the computer 1.
  • the mouse 11 can be moved on the base 5 within the flat area of the transmitting / receiving coil (L1) 10 and essentially contains, in addition to known mechanical ones and optical components, including at least two microswitches that can be actuated by the buttons on the key cover, a microcontroller and other electronic components, in particular on a main circuit board according to the invention, preferably a plurality of edge-side conductor loops as a trained receive / transmit coil (L2) 12 and an additional electronic construction ⁇ group 13, in which further necessary components of the receiving / transmitting device 14 are located, which is connected to the receiving / transmitting coil (L2) 12.
  • 2 shows the electronic assemblies 3 and 13 of both the communicator 4 and the mouse 11 in a schematic block diagram, the main electronic components of the communicator 4 and the mouse 11 preferably being located on printed circuit boards.
  • the electronic assembly 3 of the communicator 4 contains e.g. a capacitor (C1) for the LC resonant circuit 15, in particular a parallel resonant circuit, and a generator 16 which is connected on the output side to a driver stage 17.
  • the driver stage 17 is connected to the modulation device 18 which, on the other hand, is connected to the logic circuit 19, which preferably performs data signal subtraction.
  • the central logic circuit 19 is connected both to a demodulation device 20 which, like the output stage (power amplifier) 21, which is preferably located between the parallel resonant circuit 15 and the modulation device 18, is connected to the parallel resonant circuit 15.
  • the cable 2 is led from the logic circuit 19 to the computer 1, with at least two data lines 22, 23 in the cable 2 for the outward and return path of the data, i.e. Data traffic lines are included which lead to and from the interface 9.
  • the mouse 11, which can be moved on the communicator pad 5, preferably contains, in addition to the receive / transmit coil (L2) 12, which can be fastened, for example, to inner walls of the mouse lower plate, the additional assembly 13 for a rectifier device 24 for generation a DC voltage UG for the other electronic parts, for example the microcontroller and for accommodating the receive / transmit device 14 assigned to the receive / transmit coil (L1) 10.
  • the receive / transmit device 14 of the mouse 11 also include the demodulation device 25 for data reception and the modulation device 26 for the data transmission, the rectifier device 24, the modulation device 26 and the demodulation device 25 being connected to the LC resonant circuit 27.
  • all the electronic components of the receiving / transmitting device 14 and possibly the other electronic components can be accommodated in a common assembly 13.
  • the magnetically coupled communication units 4 and 11 can each have a single transmit / receive coil (L1) 10 or a single receive / transmit coil (L2) 12 for simultaneous unidirectional energy and bidirectional data transmission, one coil (L1; L2) 10; 12 and a capacitor (C1; C2) are preferably connected to form a parallel resonant circuit 15, -27 and both mutually associated resonant circuits 15; 27 are tuned to resonance and are coupled according to known rules of a band filter dimensioning.
  • L1 transmit / receive coil
  • L2 receive / transmit coil
  • C1; C2 capacitor
  • the generator 16 can consist of a quartz crystal or resonator XI with a resistor R2 and a capacitor CIO in connection with a microcomputer MCI, which is provided for frequency processing.
  • the driver stage 17 is integrated in the microcomputer MCI and is connected to its output pin (15).
  • the modulation device 18 is formed from the resistor R1, the transistor Q1 and the capacitor C5.
  • the central subtracting logic circuit 19 can also be expediently controlled by assigned ones Memory modules can be implemented programmatically in the microcomputer MCI.
  • the demodulation device 20 essentially comprises a diode D2 and a capacitor C9, the further resistors R5, R7, R9, RIO, D3 to D5 being connected to one another for level adjustment for further processing.
  • Served as an output amplifier 21 in interconnection are a transistor Q2 and a resistor R6, the resistors R3, R4 and the capacitors C3, C4 contributing to the previous pulse formation.
  • the operating voltage sieving takes place through the resistor R8 and the capacitors C6 to C8.
  • the connected diodes Dl, D6 represent the necessary protective circuit.
  • the communicator 4 thus differs essentially from the known adapter both in terms of its structure and its mode of operation in that it can generate a wave with which both energy can be transmitted-received and data signals can be transmitted-received-transmitted.
  • FIG. 4 A detailed circuit diagram for the essential component replacement of the mouse is shown in FIG. 4 after FIG. 2.
  • the receive / transmit coil 12 remains as L2
  • the resonant circuit 27 remains designated as L2, C2.
  • the rectifier device 24 is connected together from the diode D3 and the capacitors C6, C7.
  • the demodulation device 25 comprises the diodes D1, D2, the resistors R2, R3, R5 and the capacitors C4, C5, C9, the transistor Q3, the capacitor C8 and the resistor R6 being provided for the driver level adjustment hen are.
  • the modulation device 26 comprises the transistor Q2, the diode D4, the resistor R1 and the capacitor C3.
  • the peripheral mouse 11 is supplied with power from the received electromagnetic wave, the carrier wave, at the frequency (f), which is generated in the central communication unit 1, preferably in the generator 16 of the communicator 4, and is transmitted via the transmission / reception device 7.
  • the data traffic can be carried out simultaneously by modulation / demodulation of coded / decoded data signals of the same electromagnetic carrier wave with the frequency (f).
  • the mouse 11 is connected to the computer system 1 with the serial interface 9 and the communicator 4 in a magnetically coupled manner.
  • An unmodulated wave of a predetermined frequency f generated in the communicator 4 before the start of data traffic is preferably picked up by the magnetic coupling of the receiving / transmitting device 12 of the peripheral communication unit 11 and rectified to supply power to electronic components.
  • the data signal generated, modulated and coded on a carrier wave of frequency f is modulated as a data signal Wave sent via the transmit / receive device 7 with the coil (L1) 10 to the receive / transmit device 14 with the coil 12 of the mouse 11.
  • a DC voltage UG necessary for the operation of the receiving / transmitting device 14 and further electronic components of the mouse 11 is generated by a rectifier device 24 from the carrier wave of the frequency f of the received data signal-modulated wave.
  • the received data signal-modulated wave is also fed to the demodulation device 25, demodulated there and the decoded data signal processed in a microcontroller of the mouse 11.
  • the data signals output by the microcontroller are coded in the modulation device 26 on the carrier wave of the same frequency f modulated via the receive / transmit coil (L2) 12 to the communicator 4 and sent in the magnetically coupled transmit / receive coil (Ll) 10 received.
  • the data signals can be modulated by detuning the transmitting LC oscillation circuit 27 in such a way that the circuit of the communicator 4 can be relieved.
  • the data-signal-modulated wave received in the communicator 4 is demodulated, decoded in the demodulation device 20 and decoded by the data-signal-modulated wave generated in the communicator 4 by means of the subtracting logic circuit 19 as a data signal via the cable 2 and the interface 9 fed to the microprocessor of the computer system 1 for further processing.
  • Logic circuit 31 can be program-connected by means of a component structure behind a microcontroller 28 or in associated memory modules in it, it being essential that the peripheral logic circuit 31 receives signals from the demodulation device 25 and forwards signals, in particular data signals from the microcontroller 28, to the modulation device 26.
  • the peripheral subtracting logic circuit 31 is arranged between the modulation device 26 and the demodulation device 25. Connecting data lines 29, 30 are present between the microcontroller 28 and the peripheral logic circuit 31, the data line 29 for the ZKE signal coming into the microcontroller 28 and the data line 30 for the one leaving the microcontroller 28 and into the Linking circuit 31 incoming and routed to modulation device 26 PKE signal are responsible.
  • the PKE data signal is coupled into the existing carrier wave in the modulation device 26.
  • the PKE signal is zero.
  • the data signal of the ZKE 1,4 (ZKE data signal) modulated onto the carrier wave is passed via the band filter C1, 10-12, C2 or 15, 27 to the rectifier device 24 and the demodulation device 25.
  • a DC voltage UG is generated, which is used for the unidirectional power supply of the microcontroller 28 or other electronic components of the PKE 11.
  • Demodulation to the ZKE takes place in the demodulation device 25.
  • Data signal which is supplied to the logic circuit 31 and finally to the microcontroller 28. If no PKE signal is activated at the same time or if there is no PKE signal at logic circuit 31 at the same time, no PKE data signal is transmitted from PKE 11 to ZKE 1,4.
  • the unidirectional power supply of the PKE 11 is available in both cases by means of the carrier wave f which is unmodulated by the ZKE 1,4 and by the carrier wave f modulated by the ZKE data signal.
  • the microcontroller 28 can also send a PKE signal to the modulation device 26 via the peripheral link circuit 31, in which the PKE signal modulates the received unmodulated carrier wave and both to the bandpass filter 27-15 Transmission and the demodulation device 25 of the PKE 11 is supplied.
  • the peripheral logic circuit 31 simultaneously transmits the PKE signal sent by the microcontroller 28 and the one modulated in the modulation device 26 and then in the Demodulation device 25 subtracts the same PKE signal demodulated and the microcontroller 28 also does not receive a ZKE signal from the logic circuit 31, since the difference signal (PKE-PKE) m of the subtracting logic circuit 31 is also zero.
  • the ZKE data signal "equals zero" only the modulated PKE data signal is transmitted via the band filter 27, 15, demodulated in the demodulation device 20 and fed to the ZKE 1 via the data link 23 via the logic circuit 19. 4.
  • the ZKE data signal and the PKE data signal smd not equal to zero.
  • a ZKE data signal is generated via the ZKE data signal-modulated carrier wave f by means of the band filter C2, 12-10, Cl or 15-27 or by means of the two in at the same PKE transmission time Transfer resonant resonant circuits 27.15 to the PKE 11.
  • a PKE data signal has entered the logic circuit 31 from the microcontroller 28 and is present there.
  • the PKE data signal is modulated at the same time in the modulation device 26 onto the carrier shaft.
  • the demodulation device 25 there is a data signal-modulated carrier wave mixture consisting of the transmitted ZKE data signal and the PKE data signal modulated by the modulation device 26 on the same carrier wave f.
  • the ZKE + PKE data signals are fed to the logic circuit 31, where the subtraction takes place, in which the PKE data signal is subtracted from the ZKE + PKE data signal mixture and thus the PKE data signal is suppressed become.
  • the CNS data signal is obtained as the resulting differential data signal and is passed from the peripheral logic circuit 31 into the microcontroller 28 via the data line 29 for processing.
  • the solution described in the present invention serves for the simultaneous communication of two partners with one another. It is irrelevant whether the two partners will transmit their associated data signals at different times (either ZKE or PKE data signal equal to zero) or at the same time (ZKE and PKE data signal not equal to zero).
  • both the data signals supplied by the microcontroller 28 of the PKE 11 and the microprocessor of the ZKE 1,4 are simultaneously modulated on the carrier wave of the same frequency and subsequent demodulation in the demodulation devices 20, -25 in both logic circuits 19, 31 separated from the data signals contained therein and supplied by the assigned control units (microprocessor, microcontroller).
  • the data signals sent by the PKE 11 are routed to the ZKE microprocessor independently of the data signals sent by the ZKE 1.4 or the data signals sent by the ZKE 1.4 to the PKE microcontroller 28 .
  • the band filter coupling 15-27 and the logic circuits 19, 31 transmit data signals in the communication units 1, 4; 11, the data signals sent at the same time in the ZKE 1,4 and PKE 11 (ZKE signal not equal Zero, PKE signal not equal to zero) are present on the opposite side at the same time.
  • the advantage of the invention is that the bidirectional simultaneous data traffic on a carrier wave of frequency (f) saves components and thus manufacturing costs for the communicator and the peripheral communication unit.
  • the communication method also allows the energy for activating and operating the peripheral communication unit 11 in both directions at the same time even before the Provide traffic. Batteries that pollute the environment are saved and the technical availability is significantly improved.
  • the mouse as a peripheral communication unit is easier to operate due to its weight reduction.

Abstract

L'invention concerne un système de communication constitué d'une unité centrale de communication (UCC) et d'au moins une unité périphérique de communication (UPC) sans câble. Ces deux unités sont interconnectées par un couplage électromagnétique et elles assurent un trafic de données par l'intermédiaire d'une onde de fréquence prédéterminée ainsi qu'un transfert d'énergie unidirectionnel pour l'alimentation en courant de l'unité ou des unités périphériques de communication. L'invention a pour objet de créer un système de communication comprenant une unité centrale de communication et au moins une unité périphérique de communication, qui soit disponible à tout moment, prêt à la communication et facile d'utilisation. Pour ce faire, le couplage magnétique est réalisé au moyen d'un filtre passe-bande (15, 27) contenant les bobines (10, 12), le trafic des données entre l'UPC (11) et l'UCC (1, 4) est effectué par l'intermédiaire de l'onde de fréquence prédéterminée par désaccord ou modification de la charge côté UPC du circuit oscillant LC (27) et les modifications d'amplitude ainsi engendrées côté UCC du circuit oscillant LC (15) sont démodulées conjointement avec le signal de données modulé émis par l'UCC (1, 4) par le dispositif de démodulation raccordé à cet emplacement. De plus, l'UCC (1, 4) est équipée d'un circuit combinatoire (19) dans lequel le signal de données de modulation de l'UCC (1, 4) est soustrait du signal fourni par le dispositif de démodulation (20) de telle façon qu'un signal de données différentiel puisse, côté sortie, être retransmis comme signal de données de l'UPC (11) à l'UCC (1, 4) pour être traité par cette dernière.
EP96945984A 1995-11-13 1996-11-12 Systeme de communication Ceased EP0929947A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19542214 1995-11-13
DE19542214A DE19542214C1 (de) 1995-11-13 1995-11-13 Kommunikationssystem
PCT/DE1996/002155 WO1997018634A2 (fr) 1995-11-13 1996-11-12 Systeme de communication

Publications (1)

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EP0929947A2 true EP0929947A2 (fr) 1999-07-21

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EP96945984A Ceased EP0929947A2 (fr) 1995-11-13 1996-11-12 Systeme de communication

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EP (1) EP0929947A2 (fr)
DE (1) DE19542214C1 (fr)
TW (1) TW357500B (fr)
WO (1) WO1997018634A2 (fr)

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DE19854367A1 (de) * 1998-11-25 2000-06-08 Temic Semiconductor Gmbh Kabel- und batterielose Tastatur und/oder Zeigergerät
JP2002541565A (ja) * 1999-03-31 2002-12-03 イグルゼーダー，ハインリッヒ 一体化された読み取り装置を備えたテーブル
JP2001160770A (ja) * 1999-12-02 2001-06-12 Sony Corp デジタルデータ伝送装置
DE602004010140T2 (de) 2003-08-08 2008-09-18 Koninklijke Philips Electronics N.V. Unidirektionale strom- und bidirektionale datenübertragung über einer einzelnen, induktiven kopplung
JP4685032B2 (ja) 2004-01-14 2011-05-18 ジェイ．エム．スタネック リミテッド ライアビリティ カンパニー 可変形状装置
DE102006051900A1 (de) 2006-10-31 2008-05-08 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße
DE102008018829A1 (de) * 2008-04-15 2009-10-22 Knick Elektronische Messgeräte GmbH & Co. KG Induktive Übertragungsvorrichtung für elektrische Energie und Daten
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DE19542214C1 (de) 1997-03-27
TW357500B (en) 1999-05-01
WO1997018634A3 (fr) 1997-08-21
WO1997018634A2 (fr) 1997-05-22

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