Communication system including a wire network linked with another network via radio waves
First Claim
1. A communication system comprising:
- a wire communication network, said wire communication network including at least one device connected thereto and a wire link; and
a terminal connected to said wire communication network for radio communication, wherein a baseband signal in a predetermined format is transmitted over said wire link within said wire communication network, wherein, when said terminal receives the baseband signal from said device via said wire communication network, said terminal modulates a carrier wave using the received baseband signal into a transmission signal without translating the predetermined format of the baseband signal into another format, and wherein the transmission signal is transmitted from said terminal via radio waves.
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Accused Products
Abstract
A vehicle-vehicle communication system includes an in-vehicle wire LAN established in a vehicle. The in-vehicle wire LAN includes a plurality of devices connected by optical fiber links. A terminal for radio vehicle-vehicle communication is connected to the in-vehicle wire LAN by the optical fiber link. The terminal receives an optical digital signal in a predetermined format from the in-vehicle wire LAN. The terminal includes a light controlled oscillator and applies the received optical signal to the light controlled oscillator. The light controlled oscillator outputs a transmission signal of a frequency shifted from a predetermined frequency according to the intensity of the applied optical signal. Thus the terminal generates the transmission signal using FSK-modulation technique without converting the format of the optical signal into another format. The transmission signal is transmitted to a device in another vehicle via radio waves.
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Citations
22 Claims
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1. A communication system comprising:
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a wire communication network, said wire communication network including at least one device connected thereto and a wire link; and
a terminal connected to said wire communication network for radio communication, wherein a baseband signal in a predetermined format is transmitted over said wire link within said wire communication network, wherein, when said terminal receives the baseband signal from said device via said wire communication network, said terminal modulates a carrier wave using the received baseband signal into a transmission signal without translating the predetermined format of the baseband signal into another format, and wherein the transmission signal is transmitted from said terminal via radio waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A terminal connected to a wire communication network for radio communication,
wherein said terminal includes at least one of transmitter means and receiver means, wherein said transmitter means receives a first baseband signal in a predetermined format from said wire communication network, and modulates a carrier wave using the received first baseband signal into a transmission signal without translating the predetermined format of the first baseband signal into another format, wherein the transmission signal is transmitted via a transmitting antenna, wherein said receiver means receives a signal via a receiving antenna, and demodulates the received signal into a second baseband signal, and wherein the second baseband signal is transmitted from said receiver means to said wire communication network without translating a format of the second baseband signal into another format.
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19. A method for transmitting a signal in a predetermined format from a wire communication network to a radio device via radio waves, comprising the steps of:
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modulating a carrier wave of a radio frequency using the signal into a transmission signal without translating the predetermined format of the signal into another format; and
transmitting the transmission signal to said radio device.
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Specification