Wireless transmission system and wireless transmitter, wireless receiver, wireless transmission method, wireless reception method and wireless communication method used with same
First Claim
1. A wireless transmitter connected to an electronic device via a transmission path with two or more channels, comprising:
- two or more carrier oscillators provided for their respective channels of the transmission path to output carrier signals in a millimeter band;
two or more on-off keying (OOK) modulators provided so as to correspond to the carrier oscillators and perform on-off keying modulation on the carrier signals outputted by the carrier oscillators; and
two or more input circuits provided for their respective channels of the transmission path to input digital signals for two or more channels outputted by the electronic device to the OOK modulators; and
two or more transmission antennas provided so as to correspond to the OOK modulators and output millimeter-wave signals provided by the OOK modulators as radio signals, wherein,the OOK modulators perform on-off keying modulation on the carrier signals outputted by the carrier oscillators based on the digital signals inputted by the input circuits, andany of the two or more transmission antennas that use adjacent channels transmit the radio signals with different planes of polarization.
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Accused Products
Abstract
A wireless transmission system includes a wireless HDMI transmitter and a wireless HDMI receiver. The wireless HDMI transmitter includes a carrier oscillator provided for each channel of an HDMI transmission path to output a carrier signal in a millimeter band, an OOK modulator provided for each carrier oscillator to perform on-off keying modulation on a carrier signal outputted by its corresponding carrier oscillator, and an input circuit provided for each channel of the HDMI transmission path to input a digital signal outputted by a source device to the OOK modulator. Radio signals have different planes of polarization from their adjacent channels.
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Citations
10 Claims
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1. A wireless transmitter connected to an electronic device via a transmission path with two or more channels, comprising:
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two or more carrier oscillators provided for their respective channels of the transmission path to output carrier signals in a millimeter band; two or more on-off keying (OOK) modulators provided so as to correspond to the carrier oscillators and perform on-off keying modulation on the carrier signals outputted by the carrier oscillators; and two or more input circuits provided for their respective channels of the transmission path to input digital signals for two or more channels outputted by the electronic device to the OOK modulators; and two or more transmission antennas provided so as to correspond to the OOK modulators and output millimeter-wave signals provided by the OOK modulators as radio signals, wherein, the OOK modulators perform on-off keying modulation on the carrier signals outputted by the carrier oscillators based on the digital signals inputted by the input circuits, and any of the two or more transmission antennas that use adjacent channels transmit the radio signals with different planes of polarization. - View Dependent Claims (2, 3)
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4. A wireless receiver connected to an electronic device via a transmission path with two or more channels, comprising:
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two or more reception antennas provided so as to correspond to carrier frequencies of received millimeter-wave radio signals subjected to OOK modulation; two or more local oscillators provided for their respective channels of the transmission path to output local signals in a millimeter band; two or more mixers provided so as to correspond to the local oscillators and down-convert the received radio signals using the local signals outputted by the local oscillators; and two or more detector portions provided so as to correspond to the mixers and reproduce baseband signals by demodulating the signals down-converted by the mixers, wherein, any of the two or more reception antennas that use adjacent channels accept the received radio signals with different planes of polarization. - View Dependent Claims (5, 6)
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7. A wireless transmission system comprising a first wireless device connected to a first electronic device via a first transmission path with two or more channels and a second wireless device connected to a second electronic device via a second transmission path with two or more channels, wherein,
the first wireless device includes: -
two or more carrier oscillators provided for their respective channels of the first transmission path to output carrier signals in a millimeter band; two or more OOK modulators provided so as to correspond to the carrier oscillators and perform on-off keying modulation on the carrier signals outputted by the carrier oscillators; two or more input circuits provided for their respective channels of the first transmission path to input digital signals for two or more channels outputted by the first electronic device to the OOK modulators; and two or more transmission antennas for outputting millimeter-wave signals provided by the OOK modulators as radio signals, the OOK modulators perform on-off keying modulation on the carrier signals outputted by the carrier oscillators on the basis of the digital signals inputted by the input circuits, any of the two or more transmission antennas that use adjacent channels transmit the radio signals with different planes of polarization, the second wireless device includes; two or more reception antennas provided so as to correspond to the transmission antennas; two or more local oscillators provided for their respective channels of the second transmission path to output local signals in a millimeter band; two or more mixers provided so as to correspond to the local oscillators and down-convert the radio signals using the local signals outputted by the local oscillators; and two or more detector portions provided so as to correspond to the mixers and reproduce the digital signals by demodulating the signals down-converted by the mixers, and the two or more reception antennas receive the radio signals with the same planes of polarization as their corresponding transmission antennas.
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8. A wireless transmission method for use with a wireless transmitter connected to an electronic device via a transmission path with two or more channels, the method comprising:
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setting a carrier frequency of a carrier signal in a millimeter band for each of the channels of the transmission path, and transmitting a millimeter-wave radio signal for each of the channels by performing on-off keying modulation on a carrier signal on the basis of a digital signal outputted by the electronic device via the transmission path, the carrier signal corresponding to the channel of the digital signal, and the radio signals have different planes of polarization from their adjacent channels.
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9. A wireless reception method for use with a wireless receiver connected to an electronic device via a transmission path with two or more channels, the method comprising:
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setting a local frequency of a local signal in a millimeter band for each of the channels of the transmission path, and down-converting received radio signals subjected to OOK modulation on a channel-by-channel basis and then demodulated to reproduce baseband signals for their respective channels, and the radio signals have different planes of polarization from their adjacent channels.
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10. A wireless communication method for use with a wireless transmission system including a first wireless device connected to a first electronic device via a first transmission path with one or more channels and a second wireless device connected to a second electronic device via a second transmission path with one or more channels, the method comprising:
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setting a carrier frequency of a carrier signal in a millimeter band for each of the channels of the first transmission path, transmitting a millimeter-wave radio signal for each of the channels by performing on-off keying modulation on a carrier signal on the basis of a digital signal outputted by the first electronic device via the first transmission path, the carrier signal corresponding to the channel of the digital signal, setting a local frequency of a local signal in a millimeter band for each of the channels of the second transmission path, down-converting received radio signals subjected to OOK modulation on a channel-by-channel basis and then demodulated to reproduce baseband signals for their respective channels, and the radio signals have different planes of polarization from their adjacent channels.
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Specification