Optical space transmission device
First Claim
1. An optical space transmission device for one to plural bi-directional optical communications including:
- transmission result detection means for determining subsequent to a polling sequence if a transmission to an associated office is performed successfully by detecting if a command of a predetermined content is returned from the associated office in response to data transmitted thereto at a predetermined luminous intensity; and
luminous intensity adjusting means for adjusting a subsequent luminous intensity based on a result of detection by said transmission result detection means.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical space transmission device as a peripheral device includes a communication controller for adjusting a luminous intensity of an LED subsequent to a polling sequence by a host device. Before a communication is established, a luminous intensity is set to be maximum, and as long as a command of a predetermined content is returned from the host device in response to data transmitted from the peripheral device, the luminous intensity of the LED is reduced by one level. On the other hand, upon detecting a receiving error of the command by a receiving error detecting circuit, the luminous intensity of the LED is increased by one level, thereby determining an optimal luminous intensity.
15 Citations
6 Claims
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1. An optical space transmission device for one to plural bi-directional optical communications including:
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transmission result detection means for determining subsequent to a polling sequence if a transmission to an associated office is performed successfully by detecting if a command of a predetermined content is returned from the associated office in response to data transmitted thereto at a predetermined luminous intensity; and
luminous intensity adjusting means for adjusting a subsequent luminous intensity based on a result of detection by said transmission result detection means. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification