Signal transmission device, signal transmission method, signal reception device, and communication system
AssigneeFujitsu Limited
InventorsKensuke KURAKI, RYUTA TANAKA, Akira NAKAGAWA
Life of this patent
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Abstract
A signal transmission device, includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: irradiating incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity; and controlling an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object.
Claims18
A signal transmission device, comprising:
- a processor;
- and
- a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute:
- irradiating incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity;
- and
- controlling an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object.
A signal transmission method, comprising:
- irradiating incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity;
- and
- controlling, by a computer processor, an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object.
A computer-readable non-transitory medium that stores a signal transmission program for causing a computer to execute a process comprising:
- irradiating incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity;
- and
- controlling an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object.
A signal reception device, comprising:
- an image pickup unit configured to pick up an image of an arbitrary object including reflected light of incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, in a given image pickup period;
- an extraction section configured to extract a second intensity of the reflected light that varies along a time series from within a plurality of images picked up by the image pickup unit;
- a second storage unit configured to have a reflectance corresponding to the incoming light and the object stored therein in advance;
- a changing section configured to change an amplitude of the second intensity on a basis of the reflectance;
- and
- a decoding section configured to decode the symbols from a plurality of second intensities changed by the changing section.
A communication system including a signal transmission device and a signal reception device, the communication system comprising:
- the signal transmission device comprising:
- an irradiation unit configured to irradiate incoming light, which includes one or more symbols with which the incoming light has been varied in response to a signal to be transmitted, on an arbitrary object with a first intensity;
- and
- a control unit configured to control an amplitude of the first intensity on a basis of a reflectance of the incoming light irradiated on the object;
- the signal reception device comprising:
- an image pickup unit configured to pick up an image of an arbitrary object including reflected light of the incoming light in a given image pickup period;
- an extraction section configured to extract a second intensity of the reflected light that varies along a time series from within a plurality of images picked up by the image pickup unit;
- a second storage unit configured to have a reflectance corresponding to the incoming light and the object stored therein in advance;
- a changing section configured to change an amplitude of the second intensity on a basis of the reflectance;
- and
- a decoding section configured to decode the symbols from a plurality of second intensities changed by the changing section.
Dependencies are inferred from the claim text.