Arrangement, in particular in vehicles, for transmitting electric signals by connecting lines
First Claim
1. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said two-wire circuits closed by transformer-like windings coupled in the coaxial connector, wherein the two wires of the two-wire circuit are twisted into each other.
1 Assignment
0 Petitions
Accused Products
Abstract
Electric low current signals are transmitted through two-wire circuits having coaxial connectors which are closed by windings that are coupled transformer-like to the coaxial connectors. This arrangement allows transmission of control signals for electric power consuming devices within automobile doors, low frequency audio signals, and electrical power to power the electric consumers. All signals are transmitted on a common data cable. Control signals are in binary coded form, modulated onto a carrier signal, as are modulated, low frequency audio signals. The signals are demodulated in a door module and separated according to frequency. The low frequency audio signals are amplified and transmitted to a loudspeaker. The control signals are processed by a microprocessor controller in conjunction with switching units that create corrective actions for the power consuming devices located in the door.
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Citations
25 Claims
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1. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said two-wire circuits closed by transformer-like windings coupled in the coaxial connector, wherein the two wires of the two-wire circuit are twisted into each other.
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2. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein said carrier signal is a rectangular one.
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3. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein the modulator is a frequency modulator.
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4. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein the modulator is a pulse-width modulator in order to transmit low frequency audio signals.
- 5. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein the receiver further includes a rectifier as a power source for the supply of the receiver which rectifies the carrier signal.
- 7. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein said signals are binary coded and transmitted on the carrier signal in serial data form, wherein an amplitude modulator is provided which modulates the binary signals onto the carrier signal through amplitude modulation.
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9. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, in which modems are provided serving as the modulator as well as the demodulator enabling carrier signal transmission in both directions.
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10. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein low frequency audio signals, for a loud speaker are also modulated onto the carrier signal, and are separated from other signals according to frequency at the receiver, and amplified, and sent to the targeted receiver, such as a loud speaker.
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11. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said transmitter including a frequency generator for generating a carrier signal, a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein a frequency between 80 kHz and 120 kHz is chosen as a frequency of the carrier signal.
- 12. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver located within said vehicle by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said two-wire circuits closed by transformer-like windings coupled in the coaxial connector, wherein said transmitter includes a frequency generator for generating a carrier signal, and a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein said modulator modulates electric signals for a plurality of receivers onto said same carrier signal, wherein the receivers are located in a door of said automobile, the transmitter is located elsewhere in the automobile and, in the area where the door is rotatably affixed to the automobile frame with hinges, one part of the coaxial connector is affixed to the door and another part of the coaxial connector is affixed to the automobile body.
- 14. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver located within said vehicle by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said two-wire circuits closed by transformer-like windings coupled in the coaxial connector, wherein said transmitter includes a frequency generator for generating a carrier signal, and a modulator for modulating signals onto the carrier signal, said signals to be transmitted to the receiver, said receiver including a demodulator for restoring signals by demodulation, wherein said modulator modulates electric signals for a plurality of receivers onto said same carrier signal, wherein the receivers are located in a door of said vehicle, the transmitter is located elsewhere in the automobile and in the area where the door is rotatably affixed to the automobile frame with hinges, one part of the coaxial connector is affixed to the door and another part of the coaxial connector is affixed to the automobile body, the coaxial connector has two parts, wherein the two parts of the coaxial connector are penetrating each other the way the two parts of a door hinge penetrate each other.
- 20. An apparatus for the transmission of low current electric signals through cables of a vehicle from a transmitter to a receiver located within said vehicle by means of two-wire circuits, which said circuits contain at least one coaxial connector for separating said transmitter from said receiver, said two-wire circuits closed by transformer-like windings coupled in the coaxial connector, wherein said transmitter includes a frequency generator for generating a carrier signal to the receiver and a modulator for modulating signals onto the carrier signal, said receiver including a demodulator for restoring signals by demodulation, wherein said modulator modulates electric signals for a plurality of receivers onto said same carrier signal, and the transmitter includes a bus control equipment for supplying the receiver with signals and a microprocessor for the control of a sequence of operations in the bus control equipment so that the modulator modulates the signals in serial data form onto the carrier signal for transmission by means of the two-wire circuit through the coaxial connector, wherein the bus control equipment provides power consuming devices in the door with electric control signals and supplies another power consuming device such as a loud speaker with low frequency audio signals, the bus control equipment containing an inquiry unit for interrogating the position of one of switches and other operating elements located exterior to the door and a microprocessor for controlling the sequence of operations in the bus control equipment, whereby the modulator receives the low frequency signals and modulates them onto the carrier signal and receives control signals from the inquiry unit and modulates them onto the carrier signal in serial data form, and the demodulator located in the door receives signals from the bus control equipment, demodulates them and separates them into control signals and low frequency signals.
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25. A door hinge swivel joint having a first and second half, said joint used for the wireless transmission of electric signals and electrical currents, said swivel joint configured as a transformer, whose primary winding is part of one half of the hinge and whose secondary winding is part of the other half of the hinge.
Specification