OPTICAL SPACE COMMUNICATION RECEPTION CIRCUIT, OPTICAL SPACE COMMUNICATION DEVICE, OPTICAL SPACE COMMUNICATION SYSTEM, AND ELECTRONIC DEVICE
First Claim
1. An optical space communication reception circuit for receiving a signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes, wherein:
- receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal.
1 Assignment
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Accused Products
Abstract
An optical space communication reception circuit receives a signal in switched-over communication speed modes and under settings corresponding to the communication speed modes. Receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal. By this, it becomes possible, for example, in optical space transmission such as infrared communication and the like to enhance a false operation prevention characteristic against disturbance noise, without decreasing maximum communicable distances.
21 Citations
24 Claims
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1. An optical space communication reception circuit for receiving a signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes, wherein:
receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal. - View Dependent Claims (2, 3)
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4. An optical space communication reception circuit for receiving a signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes, comprising:
a receiver sensitivity adjustment circuit for adjusting receiver sensitivity in the respective communication speed modes such that maximum communicable distances in the communication speed modes are substantially equal. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An optical space communication reception circuit for receiving a signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes, comprising:
a receiver sensitivity adjustment circuit which, if the signal cannot be received due to noise input, switches over to receiver sensitivity for a communication speed mode selected subsequently to a communication speed mode used when noise is inputted or switches a setting of the optical space communication reception circuit to a circuit condition corresponding to a communication speed for the communication speed mode selected subsequently. - View Dependent Claims (17, 18, 19, 20)
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21. An optical space communication device comprising:
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an optical space communication reception circuit which includes a light receiving element for receiving a sent light signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes; and an optical space communication transmission circuit which includes a light emitting element for outputting a light signal, the optical space communication reception circuit being arranged such that receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal.
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22. An optical space communication system comprising an optical space communication device,
the optical space communication device including: -
an optical space communication reception circuit which includes a light receiving element for receiving a sent light signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes; and an optical space communication transmission circuit which includes a light emitting element for outputting a light signal, the optical space communication reception circuit being arranged such that receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal.
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23. An optical space communication system comprising an optical space communication reception circuit for receiving a signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes,
the optical space communication reception circuit including a receiver sensitivity adjustment circuit which, if the signal cannot be received due to noise input, switches over to receiver sensitivity for a communication speed mode selected subsequently to a communication speed mode used when noise is inputted or switches a setting of the optical space communication reception circuit to a circuit condition corresponding to a communication speed for the communication speed mode selected subsequently.
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24. An electronic device comprising an optical space communication device, the optical space communication device including:
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an optical space communication reception circuit which includes a light receiving element for receiving a sent light signal in switched-over communication speed modes and under settings respectively corresponding to the communication speed modes; and an optical space communication transmission circuit which includes a light emitting element for outputting a light signal, the optical space communication reception circuit being arranged such that receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal.
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Specification