Single receiver for receiving wireless transmission of signals is for use with a serial two-conductor data bus
First Claim
1. A single receiver comprising:
- a demodulator, an output which is a serial, two-conductor data bus and input means to receive a wireless transmission of a modulated carrier signal from a transmitter that uses an oscillator to generate and transmit an alternating carrier signal which has been modulated by independent clock signals and data signals from a serial, two-conductor data bus input which has data signals that have a positive and a negative flank which respectively do not coincide with a positive or negative flank of the clock signals, and the modulated carrier signal, before transmission, having been modulated in dependence on the signal on the input clock conductor and in dependence on the signal on the input data conductor respectively, so that the transmitted carrier signal includes two significant, mutually independent, separate signal channels, which do not coincide in time, the first channel being caused by modulation steps on one of the groups of positive half cycles and negative half cycles of the alternating carrier signal being transmitted and the second channel being caused by modulation steps on the other of the groups of half cycles, and the first channel being for modulations representing data signals from the input data signal conductor and the second channel being for modulations representing clock signals from the input clock signal conductor and wherein the steps of the modulations of the carrier signal representing the clock signals are out-of-phase with the steps of the modulations of the carrier signal representing the data signals; and
said receiver demodulator comprising means to demodulate the transmitted modulated, oscillator generated carrier signal received by the single receiver and to recreate independent clock and data signals corresponding to the independent clock and data signals conducted from the input serial, two-conductor data bus to the transmitter, and which do not coincide in time; and
further comprising that said demodulator has a clock conductor output for said recreated clock signal and a data conductor output for said recreated data signal, said clock conductor output and said data conductor output being connected to the said output serial two-conductor data bus.
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Abstract
An arrangement for wireless transmission of signals using a serial two-conductor data bus, the arrangement including a clock conductor and a data conductor connected to a transmitter, a receiver and a demodulator, the transmitter including an oscillator, and further including a modulator which effects modulating the oscillator generated signal in dependence on the clock conductor signal and the data conductor signal respectively. The modulator (3) is operative in carrying out on the oscillator generated signal two significant, separate modulation steps which do not coincide in time, thereby to form two mutually independent signal channels (4,8;5,10), of which a first channel (4,8) is intended for data signals and the other channel (5,10) is intended for the clock signals. The demodulator (6) is operative in demodulating one thus modulated signal received by the receiver (2) and in recreating the aforementioned two signals, and also in that the demodulator has an output (9) for a clock conductor and an output (7) for a data conductor.
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Citations
10 Claims
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1. A single receiver comprising:
- a demodulator, an output which is a serial, two-conductor data bus and input means to receive a wireless transmission of a modulated carrier signal from a transmitter that uses an oscillator to generate and transmit an alternating carrier signal which has been modulated by independent clock signals and data signals from a serial, two-conductor data bus input which has data signals that have a positive and a negative flank which respectively do not coincide with a positive or negative flank of the clock signals, and the modulated carrier signal, before transmission, having been modulated in dependence on the signal on the input clock conductor and in dependence on the signal on the input data conductor respectively, so that the transmitted carrier signal includes two significant, mutually independent, separate signal channels, which do not coincide in time, the first channel being caused by modulation steps on one of the groups of positive half cycles and negative half cycles of the alternating carrier signal being transmitted and the second channel being caused by modulation steps on the other of the groups of half cycles, and the first channel being for modulations representing data signals from the input data signal conductor and the second channel being for modulations representing clock signals from the input clock signal conductor and wherein the steps of the modulations of the carrier signal representing the clock signals are out-of-phase with the steps of the modulations of the carrier signal representing the data signals; and
said receiver demodulator comprising means to demodulate the transmitted modulated, oscillator generated carrier signal received by the single receiver and to recreate independent clock and data signals corresponding to the independent clock and data signals conducted from the input serial, two-conductor data bus to the transmitter, and which do not coincide in time; and
further comprising that said demodulator has a clock conductor output for said recreated clock signal and a data conductor output for said recreated data signal, said clock conductor output and said data conductor output being connected to the said output serial two-conductor data bus. - View Dependent Claims (2, 3, 4, 5)
- a demodulator, an output which is a serial, two-conductor data bus and input means to receive a wireless transmission of a modulated carrier signal from a transmitter that uses an oscillator to generate and transmit an alternating carrier signal which has been modulated by independent clock signals and data signals from a serial, two-conductor data bus input which has data signals that have a positive and a negative flank which respectively do not coincide with a positive or negative flank of the clock signals, and the modulated carrier signal, before transmission, having been modulated in dependence on the signal on the input clock conductor and in dependence on the signal on the input data conductor respectively, so that the transmitted carrier signal includes two significant, mutually independent, separate signal channels, which do not coincide in time, the first channel being caused by modulation steps on one of the groups of positive half cycles and negative half cycles of the alternating carrier signal being transmitted and the second channel being caused by modulation steps on the other of the groups of half cycles, and the first channel being for modulations representing data signals from the input data signal conductor and the second channel being for modulations representing clock signals from the input clock signal conductor and wherein the steps of the modulations of the carrier signal representing the clock signals are out-of-phase with the steps of the modulations of the carrier signal representing the data signals; and
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6. A single receiver comprising:
- a demodulator, an output which is a serial, two-conductor data bus and input means to receive a wireless transmission of a modulated carrier signal from a transmitter that uses an oscillator to generate and transmit an alternating carrier signal which has been modulated by independent clock signals and data signals from a serial, two-conductor data bus input which has data signals that have a positive and a negative flank which respectively do not coincide with a positive or negative flank of the clock signals, and the modulated carrier signal, before transmission, having ben modulated in two steps, one step being representative of the signal on the input clock conductor and the other step being representative of the signal on the input data conductor respectively, so that the transmitted carrier signal includes two significant, mutually independent, different and separate modulated steps on the oscillating carrier signal which do not coincide in time, a first of the two different modulation steps being a transmission of the carrier signal over a predetermined short time period and the second of the two different modulation steps being a transmission of the carrier signal over a predetermined long time period, of which periods the short time period is significantly shorter than the duration of a given, predetermined reference time and the long time period is significantly longer than the reference time, and said receiver demodulator comprising means to demodulate the transmitted modulated, oscillator generated carrier signal received by the single receiver and to recreate independent clock and data signals corresponding to the independent clock and data signals conducted from the input serial, two-conductor data bus to the transmitter, and which do not coincide in time; and
further comprising that said demodulator has a clock conductor output for said recreated clock signal and a data conductor output for said recreated data signal, said clock conductor output and said data conductor output being connected to the said output serial two-conductor data bus. - View Dependent Claims (7, 8, 9, 10)
- a demodulator, an output which is a serial, two-conductor data bus and input means to receive a wireless transmission of a modulated carrier signal from a transmitter that uses an oscillator to generate and transmit an alternating carrier signal which has been modulated by independent clock signals and data signals from a serial, two-conductor data bus input which has data signals that have a positive and a negative flank which respectively do not coincide with a positive or negative flank of the clock signals, and the modulated carrier signal, before transmission, having ben modulated in two steps, one step being representative of the signal on the input clock conductor and the other step being representative of the signal on the input data conductor respectively, so that the transmitted carrier signal includes two significant, mutually independent, different and separate modulated steps on the oscillating carrier signal which do not coincide in time, a first of the two different modulation steps being a transmission of the carrier signal over a predetermined short time period and the second of the two different modulation steps being a transmission of the carrier signal over a predetermined long time period, of which periods the short time period is significantly shorter than the duration of a given, predetermined reference time and the long time period is significantly longer than the reference time, and said receiver demodulator comprising means to demodulate the transmitted modulated, oscillator generated carrier signal received by the single receiver and to recreate independent clock and data signals corresponding to the independent clock and data signals conducted from the input serial, two-conductor data bus to the transmitter, and which do not coincide in time; and
Specification