Optical signal communication method and device
AssigneeFoundation for Research and Business, Seoul National University of Science and Technology
InventorIll Soo Sohn
Life of this patent
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Abstract
Disclosed are an optical signal communication method, and an optical signal transmission device and an optical signal reception device which perform the method. The optical signal communication method may comprise the steps of: receiving input data to be modulated into an optical signal, modulating the input data into the optical signal, and transmitting the optical signal to an optical signal reception device, wherein the optical signal includes a start pulse and an end pulse, and a time interval between the start pulse and the end pulse is determined on the basis of a data value of the input data.
Claims20
An optical signal communication method performed by an optical signal transmission device, the optical signal communication method comprising:
- receiving input data to be modulated into an optical signal;
- modulating the input data into the optical signal;
- and
- transmitting the optical signal to an optical signal reception device,
- wherein the optical signal comprises a start pulse and an end pulse,
- wherein a time interval between the start pulse and the end pulse is determined based on a data value of the input data,
- wherein the optical signal reception device determines that an error occurred in receiving an optical signal comprising the start, pulse when the end pulse is not received before a time count corresponding to a threshold value is completed after the start pulse is received, and determines that the optical signal based on the start pulse and the end pulse is not demodulated when a time interval between a time point, at which the start pulse is received and a time point at which the end pulse is received is greater than the threshold value,
- wherein the threshold value is a maximum value of a time interval between a time point at which the start pulse is recognized and a time point at which the end pulse is recognized, and is preset and shared between the optical signal transmission device and the optical signal reception device.
An optical signal communication method performed by an optical signal reception device, the optical signal communication method comprising:
- receiving an optical signal from an optical signal transmission device;
- and
- obtaining data corresponding to the optical signal by demodulating the received optical signal,
- wherein the optical signal comprises a start pulse and an end pulse,
- wherein a time interval between the start pulse and the end pulse is determined based on a data value of the data,
- wherein the optical si anal transmission device sets and transmits a threshold value,
- wherein the optical signal reception device determines that an error occurred in receiving an optical signal comprising the start pulse when the end pulse is not received before a time count corresponding to the threshold value is completed after the start pulse is received, and determines that the optical signal based on the start pulse and the end pulse is not demodulated when a time interval between a time point at which the start pulse is recognized and a time point at which the end pulse is recognized is greater than the threshold value,
- wherein the threshold value is a maximum value of a time interval between a time point at which the start pulse is recognized and a time point at which the end puke is recognized.
An optical signal transmission device for performing an optical signal communication method, the optical signal transmission device comprising:
- a modulator configured to modulate input data into an optical signal;
- and
- a communicator configured to transmit the optical signal to an optical signal reception device,
- wherein the optical signal comprises a start pulse and an end pulse,
- wherein a time interval between the start pulse and the end pulse is determined based on a data value of the input data,
- wherein the optical signal reception device determines that an error occurred in receiving an optical signal comprising the start pulse when the end pulse is not received before a time count corresponding to a threshold value is completed after the start pulse is received, and determines that the optical signal based on the start pulse and fee end pulse is not demodulated when a time interval between a time point at which the start pulse is received and a time point at which the end pulse is received is greater than the threshold value,
- wherein the threshold value is a maximum value of a time interval between a time point at which the start pulse is recognized and a time point at which the end pulse is recognized, and is preset and shared between the optical signal transmission device and the optical signal reception device.
An optical signal reception device for performing an optical signal communication method, the optical signal reception device comprising:
- a communicator configured to receive an optical signal from an optical signal transmission device;
- and
- a demodulator configured to obtain data corresponding to the optical signal by demodulating the received optical signal,
- wherein the optical signal comprises a start pulse and an end pulse,
- wherein a time interval between the start pulse and the end pulse is determined based on a data value of the data,
- wherein the optical signal transmission device sets and transmits a threshold value,
- wherein the optical signal reception device determines that an error occurred in receiving an optical signal comprising the start pulse when the end pulse is not received before a time count corresponding to the threshold value is completed after the start pulse is received, and determines that the optical signal based on the start pulse and the end pulse is not demodulated when a time interval between a time point at which the start pulse is recognized and a time point at which the end pulse is recognized is greater than the threshold value,
- wherein the threshold value is a maximum value of a time interval between a time point at which the start pulse is recognized and a time point at which the end pulse is recognized.
Dependencies are inferred from the claim text.